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Diffstat (limited to 'browser/components/customizableui/CustomizableUI.jsm')
| -rw-r--r-- | browser/components/customizableui/CustomizableUI.jsm | 4420 |
1 files changed, 4420 insertions, 0 deletions
diff --git a/browser/components/customizableui/CustomizableUI.jsm b/browser/components/customizableui/CustomizableUI.jsm new file mode 100644 index 000000000..86ff2708b --- /dev/null +++ b/browser/components/customizableui/CustomizableUI.jsm @@ -0,0 +1,4420 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +this.EXPORTED_SYMBOLS = ["CustomizableUI"]; + +const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components; + +Cu.import("resource://gre/modules/Services.jsm"); +Cu.import("resource://gre/modules/XPCOMUtils.jsm"); +Cu.import("resource://gre/modules/AppConstants.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "PanelWideWidgetTracker", + "resource:///modules/PanelWideWidgetTracker.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "CustomizableWidgets", + "resource:///modules/CustomizableWidgets.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "DeferredTask", + "resource://gre/modules/DeferredTask.jsm"); +XPCOMUtils.defineLazyModuleGetter(this, "PrivateBrowsingUtils", + "resource://gre/modules/PrivateBrowsingUtils.jsm"); +XPCOMUtils.defineLazyGetter(this, "gWidgetsBundle", function() { + const kUrl = "chrome://browser/locale/customizableui/customizableWidgets.properties"; + return Services.strings.createBundle(kUrl); +}); +XPCOMUtils.defineLazyModuleGetter(this, "ShortcutUtils", + "resource://gre/modules/ShortcutUtils.jsm"); +XPCOMUtils.defineLazyServiceGetter(this, "gELS", + "@mozilla.org/eventlistenerservice;1", "nsIEventListenerService"); +XPCOMUtils.defineLazyModuleGetter(this, "LightweightThemeManager", + "resource://gre/modules/LightweightThemeManager.jsm"); + +const kNSXUL = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"; + +const kSpecialWidgetPfx = "customizableui-special-"; + +const kPrefCustomizationState = "browser.uiCustomization.state"; +const kPrefCustomizationAutoAdd = "browser.uiCustomization.autoAdd"; +const kPrefCustomizationDebug = "browser.uiCustomization.debug"; +const kPrefDrawInTitlebar = "browser.tabs.drawInTitlebar"; +const kPrefWebIDEInNavbar = "devtools.webide.widget.inNavbarByDefault"; + +const kExpectedWindowURL = "chrome://browser/content/browser.xul"; + +/** + * The keys are the handlers that are fired when the event type (the value) + * is fired on the subview. A widget that provides a subview has the option + * of providing onViewShowing and onViewHiding event handlers. + */ +const kSubviewEvents = [ + "ViewShowing", + "ViewHiding" +]; + +/** + * The current version. We can use this to auto-add new default widgets as necessary. + * (would be const but isn't because of testing purposes) + */ +var kVersion = 6; + +/** + * Buttons removed from built-ins by version they were removed. kVersion must be + * bumped any time a new id is added to this. Use the button id as key, and + * version the button is removed in as the value. e.g. "pocket-button": 5 + */ +var ObsoleteBuiltinButtons = { + "pocket-button": 6 +}; + +/** + * gPalette is a map of every widget that CustomizableUI.jsm knows about, keyed + * on their IDs. + */ +var gPalette = new Map(); + +/** + * gAreas maps area IDs to Sets of properties about those areas. An area is a + * place where a widget can be put. + */ +var gAreas = new Map(); + +/** + * gPlacements maps area IDs to Arrays of widget IDs, indicating that the widgets + * are placed within that area (either directly in the area node, or in the + * customizationTarget of the node). + */ +var gPlacements = new Map(); + +/** + * gFuturePlacements represent placements that will happen for areas that have + * not yet loaded (due to lazy-loading). This can occur when add-ons register + * widgets. + */ +var gFuturePlacements = new Map(); + +// XXXunf Temporary. Need a nice way to abstract functions to build widgets +// of these types. +var gSupportedWidgetTypes = new Set(["button", "view", "custom"]); + +/** + * gPanelsForWindow is a list of known panels in a window which we may need to close + * should command events fire which target them. + */ +var gPanelsForWindow = new WeakMap(); + +/** + * gSeenWidgets remembers which widgets the user has seen for the first time + * before. This way, if a new widget is created, and the user has not seen it + * before, it can be put in its default location. Otherwise, it remains in the + * palette. + */ +var gSeenWidgets = new Set(); + +/** + * gDirtyAreaCache is a set of area IDs for areas where items have been added, + * moved or removed at least once. This set is persisted, and is used to + * optimize building of toolbars in the default case where no toolbars should + * be "dirty". + */ +var gDirtyAreaCache = new Set(); + +/** + * gPendingBuildAreas is a map from area IDs to map from build nodes to their + * existing children at the time of node registration, that are waiting + * for the area to be registered + */ +var gPendingBuildAreas = new Map(); + +var gSavedState = null; +var gRestoring = false; +var gDirty = false; +var gInBatchStack = 0; +var gResetting = false; +var gUndoResetting = false; + +/** + * gBuildAreas maps area IDs to actual area nodes within browser windows. + */ +var gBuildAreas = new Map(); + +/** + * gBuildWindows is a map of windows that have registered build areas, mapped + * to a Set of known toolboxes in that window. + */ +var gBuildWindows = new Map(); + +var gNewElementCount = 0; +var gGroupWrapperCache = new Map(); +var gSingleWrapperCache = new WeakMap(); +var gListeners = new Set(); + +var gUIStateBeforeReset = { + uiCustomizationState: null, + drawInTitlebar: null, + currentTheme: null, +}; + +XPCOMUtils.defineLazyGetter(this, "log", () => { + let scope = {}; + Cu.import("resource://gre/modules/Console.jsm", scope); + let debug; + try { + debug = Services.prefs.getBoolPref(kPrefCustomizationDebug); + } catch (ex) {} + let consoleOptions = { + maxLogLevel: debug ? "all" : "log", + prefix: "CustomizableUI", + }; + return new scope.ConsoleAPI(consoleOptions); +}); + +var CustomizableUIInternal = { + initialize: function() { + log.debug("Initializing"); + + this.addListener(this); + this._defineBuiltInWidgets(); + this.loadSavedState(); + this._introduceNewBuiltinWidgets(); + this._markObsoleteBuiltinButtonsSeen(); + + /** + * Please be advised that adding items to the panel by default could + * cause CART talos test regressions. This might happen when the + * number of items in the panel causes the area to become "scrollable" + * during the last phases of the transition. See bug 1230671 for an + * example of this. Be sure that what you're adding really needs to go + * into the panel by default, and if it does, consider swapping + * something out for it. + */ + let panelPlacements = [ + "edit-controls", + "zoom-controls", + "new-window-button", + "privatebrowsing-button", + "save-page-button", + "print-button", + "history-panelmenu", + "fullscreen-button", + "find-button", + "preferences-button", + "add-ons-button", + "sync-button", + ]; + + if (!AppConstants.MOZ_DEV_EDITION) { + panelPlacements.splice(-1, 0, "developer-button"); + } + + if (AppConstants.E10S_TESTING_ONLY) { + if (gPalette.has("e10s-button")) { + let newWindowIndex = panelPlacements.indexOf("new-window-button"); + if (newWindowIndex > -1) { + panelPlacements.splice(newWindowIndex + 1, 0, "e10s-button"); + } + } + } + + let showCharacterEncoding = Services.prefs.getComplexValue( + "browser.menu.showCharacterEncoding", + Ci.nsIPrefLocalizedString + ).data; + if (showCharacterEncoding == "true") { + panelPlacements.push("characterencoding-button"); + } + + this.registerArea(CustomizableUI.AREA_PANEL, { + anchor: "PanelUI-menu-button", + type: CustomizableUI.TYPE_MENU_PANEL, + defaultPlacements: panelPlacements + }, true); + PanelWideWidgetTracker.init(); + + let navbarPlacements = [ + "urlbar-container", + "search-container", + "bookmarks-menu-button", + "downloads-button", + "home-button", + ]; + + if (AppConstants.MOZ_DEV_EDITION) { + navbarPlacements.splice(2, 0, "developer-button"); + } + + if (Services.prefs.getBoolPref(kPrefWebIDEInNavbar)) { + navbarPlacements.push("webide-button"); + } + + // Place this last, when createWidget is called for pocket, it will + // append to the toolbar. + if (Services.prefs.getPrefType("extensions.pocket.enabled") != Services.prefs.PREF_INVALID && + Services.prefs.getBoolPref("extensions.pocket.enabled")) { + navbarPlacements.push("pocket-button"); + } + + this.registerArea(CustomizableUI.AREA_NAVBAR, { + legacy: true, + type: CustomizableUI.TYPE_TOOLBAR, + overflowable: true, + defaultPlacements: navbarPlacements, + defaultCollapsed: false, + }, true); + + if (AppConstants.platform != "macosx") { + this.registerArea(CustomizableUI.AREA_MENUBAR, { + legacy: true, + type: CustomizableUI.TYPE_TOOLBAR, + defaultPlacements: [ + "menubar-items", + ], + get defaultCollapsed() { + if (AppConstants.MENUBAR_CAN_AUTOHIDE) { + if (AppConstants.platform == "linux") { + return true; + } + // This is duplicated logic from /browser/base/jar.mn + // for win6BrowserOverlay.xul. + return AppConstants.isPlatformAndVersionAtLeast("win", 6); + } + return false; + } + }, true); + } + + this.registerArea(CustomizableUI.AREA_TABSTRIP, { + legacy: true, + type: CustomizableUI.TYPE_TOOLBAR, + defaultPlacements: [ + "tabbrowser-tabs", + "new-tab-button", + "alltabs-button", + ], + defaultCollapsed: null, + }, true); + this.registerArea(CustomizableUI.AREA_BOOKMARKS, { + legacy: true, + type: CustomizableUI.TYPE_TOOLBAR, + defaultPlacements: [ + "personal-bookmarks", + ], + defaultCollapsed: true, + }, true); + + this.registerArea(CustomizableUI.AREA_ADDONBAR, { + type: CustomizableUI.TYPE_TOOLBAR, + legacy: true, + defaultPlacements: ["addonbar-closebutton", "status-bar"], + defaultCollapsed: false, + }, true); + }, + + get _builtinToolbars() { + let toolbars = new Set([ + CustomizableUI.AREA_NAVBAR, + CustomizableUI.AREA_BOOKMARKS, + CustomizableUI.AREA_TABSTRIP, + CustomizableUI.AREA_ADDONBAR, + ]); + if (AppConstants.platform != "macosx") { + toolbars.add(CustomizableUI.AREA_MENUBAR); + } + return toolbars; + }, + + _defineBuiltInWidgets: function() { + for (let widgetDefinition of CustomizableWidgets) { + this.createBuiltinWidget(widgetDefinition); + } + }, + + _introduceNewBuiltinWidgets: function() { + // We should still enter even if gSavedState.currentVersion >= kVersion + // because the per-widget pref facility is independent of versioning. + if (!gSavedState) { + // Flip all the prefs so we don't try to re-introduce later: + for (let [, widget] of gPalette) { + if (widget.defaultArea && widget._introducedInVersion === "pref") { + let prefId = "browser.toolbarbuttons.introduced." + widget.id; + Services.prefs.setBoolPref(prefId, true); + } + } + return; + } + + let currentVersion = gSavedState.currentVersion; + for (let [id, widget] of gPalette) { + if (widget.defaultArea) { + let shouldAdd = false; + let shouldSetPref = false; + let prefId = "browser.toolbarbuttons.introduced." + widget.id; + if (widget._introducedInVersion === "pref") { + try { + shouldAdd = !Services.prefs.getBoolPref(prefId); + } catch (ex) { + // Pref doesn't exist: + shouldAdd = true; + } + shouldSetPref = shouldAdd; + } else if (widget._introducedInVersion > currentVersion) { + shouldAdd = true; + } + + if (shouldAdd) { + let futurePlacements = gFuturePlacements.get(widget.defaultArea); + if (futurePlacements) { + futurePlacements.add(id); + } else { + gFuturePlacements.set(widget.defaultArea, new Set([id])); + } + if (shouldSetPref) { + Services.prefs.setBoolPref(prefId, true); + } + } + } + } + + if (currentVersion < 2) { + // Nuke the old 'loop-call-button' out of orbit. + CustomizableUI.removeWidgetFromArea("loop-call-button"); + } + + if (currentVersion < 4) { + CustomizableUI.removeWidgetFromArea("loop-button-throttled"); + } + }, + + /** + * _markObsoleteBuiltinButtonsSeen + * when upgrading, ensure obsoleted buttons are in seen state. + */ + _markObsoleteBuiltinButtonsSeen: function() { + if (!gSavedState) + return; + let currentVersion = gSavedState.currentVersion; + if (currentVersion >= kVersion) + return; + // we're upgrading, update state if necessary + for (let id in ObsoleteBuiltinButtons) { + let version = ObsoleteBuiltinButtons[id] + if (version == kVersion) { + gSeenWidgets.add(id); + gDirty = true; + } + } + }, + + _placeNewDefaultWidgetsInArea: function(aArea) { + let futurePlacedWidgets = gFuturePlacements.get(aArea); + let savedPlacements = gSavedState && gSavedState.placements && gSavedState.placements[aArea]; + let defaultPlacements = gAreas.get(aArea).get("defaultPlacements"); + if (!savedPlacements || !savedPlacements.length || !futurePlacedWidgets || !defaultPlacements || + !defaultPlacements.length) { + return; + } + let defaultWidgetIndex = -1; + + for (let widgetId of futurePlacedWidgets) { + let widget = gPalette.get(widgetId); + if (!widget || widget.source !== CustomizableUI.SOURCE_BUILTIN || + !widget.defaultArea || !widget._introducedInVersion || + savedPlacements.indexOf(widget.id) !== -1) { + continue; + } + defaultWidgetIndex = defaultPlacements.indexOf(widget.id); + if (defaultWidgetIndex === -1) { + continue; + } + // Now we know that this widget should be here by default, was newly introduced, + // and we have a saved state to insert into, and a default state to work off of. + // Try introducing after widgets that come before it in the default placements: + for (let i = defaultWidgetIndex; i >= 0; i--) { + // Special case: if the defaults list this widget as coming first, insert at the beginning: + if (i === 0 && i === defaultWidgetIndex) { + savedPlacements.splice(0, 0, widget.id); + // Before you ask, yes, deleting things inside a let x of y loop where y is a Set is + // safe, and we won't skip any items. + futurePlacedWidgets.delete(widget.id); + gDirty = true; + break; + } + // Otherwise, if we're somewhere other than the beginning, check if the previous + // widget is in the saved placements. + if (i) { + let previousWidget = defaultPlacements[i - 1]; + let previousWidgetIndex = savedPlacements.indexOf(previousWidget); + if (previousWidgetIndex != -1) { + savedPlacements.splice(previousWidgetIndex + 1, 0, widget.id); + futurePlacedWidgets.delete(widget.id); + gDirty = true; + break; + } + } + } + // The loop above either inserts the item or doesn't - either way, we can get away + // with doing nothing else now; if the item remains in gFuturePlacements, we'll + // add it at the end in restoreStateForArea. + } + this.saveState(); + }, + + wrapWidget: function(aWidgetId) { + if (gGroupWrapperCache.has(aWidgetId)) { + return gGroupWrapperCache.get(aWidgetId); + } + + let provider = this.getWidgetProvider(aWidgetId); + if (!provider) { + return null; + } + + if (provider == CustomizableUI.PROVIDER_API) { + let widget = gPalette.get(aWidgetId); + if (!widget.wrapper) { + widget.wrapper = new WidgetGroupWrapper(widget); + gGroupWrapperCache.set(aWidgetId, widget.wrapper); + } + return widget.wrapper; + } + + // PROVIDER_SPECIAL gets treated the same as PROVIDER_XUL. + let wrapper = new XULWidgetGroupWrapper(aWidgetId); + gGroupWrapperCache.set(aWidgetId, wrapper); + return wrapper; + }, + + registerArea: function(aName, aProperties, aInternalCaller) { + if (typeof aName != "string" || !/^[a-z0-9-_]{1,}$/i.test(aName)) { + throw new Error("Invalid area name"); + } + + let areaIsKnown = gAreas.has(aName); + let props = areaIsKnown ? gAreas.get(aName) : new Map(); + const kImmutableProperties = new Set(["type", "legacy", "overflowable"]); + for (let key in aProperties) { + if (areaIsKnown && kImmutableProperties.has(key) && + props.get(key) != aProperties[key]) { + throw new Error("An area cannot change the property for '" + key + "'"); + } + // XXXgijs for special items, we need to make sure they have an appropriate ID + // so we aren't perpetually in a non-default state: + if (key == "defaultPlacements" && Array.isArray(aProperties[key])) { + props.set(key, aProperties[key].map(x => this.isSpecialWidget(x) ? this.ensureSpecialWidgetId(x) : x )); + } else { + props.set(key, aProperties[key]); + } + } + // Default to a toolbar: + if (!props.has("type")) { + props.set("type", CustomizableUI.TYPE_TOOLBAR); + } + if (props.get("type") == CustomizableUI.TYPE_TOOLBAR) { + // Check aProperties instead of props because this check is only interested + // in the passed arguments, not the state of a potentially pre-existing area. + if (!aInternalCaller && aProperties["defaultCollapsed"]) { + throw new Error("defaultCollapsed is only allowed for default toolbars.") + } + if (!props.has("defaultCollapsed")) { + props.set("defaultCollapsed", true); + } + } else if (props.has("defaultCollapsed")) { + throw new Error("defaultCollapsed only applies for TYPE_TOOLBAR areas."); + } + // Sanity check type: + let allTypes = [CustomizableUI.TYPE_TOOLBAR, CustomizableUI.TYPE_MENU_PANEL]; + if (allTypes.indexOf(props.get("type")) == -1) { + throw new Error("Invalid area type " + props.get("type")); + } + + // And to no placements: + if (!props.has("defaultPlacements")) { + props.set("defaultPlacements", []); + } + // Sanity check default placements array: + if (!Array.isArray(props.get("defaultPlacements"))) { + throw new Error("Should provide an array of default placements"); + } + + if (!areaIsKnown) { + gAreas.set(aName, props); + + // Reconcile new default widgets. Have to do this before we start restoring things. + this._placeNewDefaultWidgetsInArea(aName); + + if (props.get("legacy") && !gPlacements.has(aName)) { + // Guarantee this area exists in gFuturePlacements, to avoid checking it in + // various places elsewhere. + if (!gFuturePlacements.has(aName)) { + gFuturePlacements.set(aName, new Set()); + } + } else { + this.restoreStateForArea(aName); + } + + // If we have pending build area nodes, register all of them + if (gPendingBuildAreas.has(aName)) { + let pendingNodes = gPendingBuildAreas.get(aName); + for (let [pendingNode, existingChildren] of pendingNodes) { + this.registerToolbarNode(pendingNode, existingChildren); + } + gPendingBuildAreas.delete(aName); + } + } + }, + + unregisterArea: function(aName, aDestroyPlacements) { + if (typeof aName != "string" || !/^[a-z0-9-_]{1,}$/i.test(aName)) { + throw new Error("Invalid area name"); + } + if (!gAreas.has(aName) && !gPlacements.has(aName)) { + throw new Error("Area not registered"); + } + + // Move all the widgets out + this.beginBatchUpdate(); + try { + let placements = gPlacements.get(aName); + if (placements) { + // Need to clone this array so removeWidgetFromArea doesn't modify it + placements = [...placements]; + placements.forEach(this.removeWidgetFromArea, this); + } + + // Delete all remaining traces. + gAreas.delete(aName); + // Only destroy placements when necessary: + if (aDestroyPlacements) { + gPlacements.delete(aName); + } else { + // Otherwise we need to re-set them, as removeFromArea will have emptied + // them out: + gPlacements.set(aName, placements); + } + gFuturePlacements.delete(aName); + let existingAreaNodes = gBuildAreas.get(aName); + if (existingAreaNodes) { + for (let areaNode of existingAreaNodes) { + this.notifyListeners("onAreaNodeUnregistered", aName, areaNode.customizationTarget, + CustomizableUI.REASON_AREA_UNREGISTERED); + } + } + gBuildAreas.delete(aName); + } finally { + this.endBatchUpdate(true); + } + }, + + registerToolbarNode: function(aToolbar, aExistingChildren) { + let area = aToolbar.id; + if (gBuildAreas.has(area) && gBuildAreas.get(area).has(aToolbar)) { + return; + } + let areaProperties = gAreas.get(area); + + // If this area is not registered, try to do it automatically: + if (!areaProperties) { + // If there's no defaultset attribute and this isn't a legacy extra toolbar, + // we assume that we should wait for registerArea to be called: + if (!aToolbar.hasAttribute("defaultset") && + !aToolbar.hasAttribute("customindex")) { + if (!gPendingBuildAreas.has(area)) { + gPendingBuildAreas.set(area, new Map()); + } + let pendingNodes = gPendingBuildAreas.get(area); + pendingNodes.set(aToolbar, aExistingChildren); + return; + } + let props = {type: CustomizableUI.TYPE_TOOLBAR, legacy: true}; + let defaultsetAttribute = aToolbar.getAttribute("defaultset") || ""; + props.defaultPlacements = defaultsetAttribute.split(',').filter(s => s); + this.registerArea(area, props); + areaProperties = gAreas.get(area); + } + + this.beginBatchUpdate(); + try { + let placements = gPlacements.get(area); + if (!placements && areaProperties.has("legacy")) { + let legacyState = aToolbar.getAttribute("currentset"); + if (legacyState) { + legacyState = legacyState.split(",").filter(s => s); + } + + // Manually restore the state here, so the legacy state can be converted. + this.restoreStateForArea(area, legacyState); + placements = gPlacements.get(area); + } + + // Check that the current children and the current placements match. If + // not, mark it as dirty: + if (aExistingChildren.length != placements.length || + aExistingChildren.every((id, i) => id == placements[i])) { + gDirtyAreaCache.add(area); + } + + if (areaProperties.has("overflowable")) { + aToolbar.overflowable = new OverflowableToolbar(aToolbar); + } + + this.registerBuildArea(area, aToolbar); + + // We only build the toolbar if it's been marked as "dirty". Dirty means + // one of the following things: + // 1) Items have been added, moved or removed from this toolbar before. + // 2) The number of children of the toolbar does not match the length of + // the placements array for that area. + // + // This notion of being "dirty" is stored in a cache which is persisted + // in the saved state. + if (gDirtyAreaCache.has(area)) { + this.buildArea(area, placements, aToolbar); + } + this.notifyListeners("onAreaNodeRegistered", area, aToolbar.customizationTarget); + aToolbar.setAttribute("currentset", placements.join(",")); + } finally { + this.endBatchUpdate(); + } + }, + + buildArea: function(aArea, aPlacements, aAreaNode) { + let document = aAreaNode.ownerDocument; + let window = document.defaultView; + let inPrivateWindow = PrivateBrowsingUtils.isWindowPrivate(window); + let container = aAreaNode.customizationTarget; + let areaIsPanel = gAreas.get(aArea).get("type") == CustomizableUI.TYPE_MENU_PANEL; + + if (!container) { + throw new Error("Expected area " + aArea + + " to have a customizationTarget attribute."); + } + + // Restore nav-bar visibility since it may have been hidden + // through a migration path (bug 938980) or an add-on. + if (aArea == CustomizableUI.AREA_NAVBAR) { + aAreaNode.collapsed = false; + } + + this.beginBatchUpdate(); + + try { + let currentNode = container.firstChild; + let placementsToRemove = new Set(); + for (let id of aPlacements) { + while (currentNode && currentNode.getAttribute("skipintoolbarset") == "true") { + currentNode = currentNode.nextSibling; + } + + if (currentNode && currentNode.id == id) { + currentNode = currentNode.nextSibling; + continue; + } + + if (this.isSpecialWidget(id) && areaIsPanel) { + placementsToRemove.add(id); + continue; + } + + let [provider, node] = this.getWidgetNode(id, window); + if (!node) { + log.debug("Unknown widget: " + id); + continue; + } + + let widget = null; + // If the placements have items in them which are (now) no longer removable, + // we shouldn't be moving them: + if (provider == CustomizableUI.PROVIDER_API) { + widget = gPalette.get(id); + if (!widget.removable && aArea != widget.defaultArea) { + placementsToRemove.add(id); + continue; + } + } else if (provider == CustomizableUI.PROVIDER_XUL && + node.parentNode != container && !this.isWidgetRemovable(node)) { + placementsToRemove.add(id); + continue; + } // Special widgets are always removable, so no need to check them + + if (inPrivateWindow && widget && !widget.showInPrivateBrowsing) { + continue; + } + + this.ensureButtonContextMenu(node, aAreaNode); + if (node.localName == "toolbarbutton") { + if (areaIsPanel) { + node.setAttribute("wrap", "true"); + } else { + node.removeAttribute("wrap"); + } + } + + // This needs updating in case we're resetting / undoing a reset. + if (widget) { + widget.currentArea = aArea; + } + this.insertWidgetBefore(node, currentNode, container, aArea); + if (gResetting) { + this.notifyListeners("onWidgetReset", node, container); + } else if (gUndoResetting) { + this.notifyListeners("onWidgetUndoMove", node, container); + } + } + + if (currentNode) { + let palette = aAreaNode.toolbox ? aAreaNode.toolbox.palette : null; + let limit = currentNode.previousSibling; + let node = container.lastChild; + while (node && node != limit) { + let previousSibling = node.previousSibling; + // Nodes opt-in to removability. If they're removable, and we haven't + // seen them in the placements array, then we toss them into the palette + // if one exists. If no palette exists, we just remove the node. If the + // node is not removable, we leave it where it is. However, we can only + // safely touch elements that have an ID - both because we depend on + // IDs, and because such elements are not intended to be widgets + // (eg, titlebar-placeholder elements). + if (node.id && node.getAttribute("skipintoolbarset") != "true") { + if (this.isWidgetRemovable(node)) { + if (palette && !this.isSpecialWidget(node.id)) { + palette.appendChild(node); + this.removeLocationAttributes(node); + } else { + container.removeChild(node); + } + } else { + node.setAttribute("removable", false); + log.debug("Adding non-removable widget to placements of " + aArea + ": " + + node.id); + gPlacements.get(aArea).push(node.id); + gDirty = true; + } + } + node = previousSibling; + } + } + + // If there are placements in here which aren't removable from their original area, + // we remove them from this area's placement array. They will (have) be(en) added + // to their original area's placements array in the block above this one. + if (placementsToRemove.size) { + let placementAry = gPlacements.get(aArea); + for (let id of placementsToRemove) { + let index = placementAry.indexOf(id); + placementAry.splice(index, 1); + } + } + + if (gResetting) { + this.notifyListeners("onAreaReset", aArea, container); + } + } finally { + this.endBatchUpdate(); + } + }, + + addPanelCloseListeners: function(aPanel) { + gELS.addSystemEventListener(aPanel, "click", this, false); + gELS.addSystemEventListener(aPanel, "keypress", this, false); + let win = aPanel.ownerGlobal; + if (!gPanelsForWindow.has(win)) { + gPanelsForWindow.set(win, new Set()); + } + gPanelsForWindow.get(win).add(this._getPanelForNode(aPanel)); + }, + + removePanelCloseListeners: function(aPanel) { + gELS.removeSystemEventListener(aPanel, "click", this, false); + gELS.removeSystemEventListener(aPanel, "keypress", this, false); + let win = aPanel.ownerGlobal; + let panels = gPanelsForWindow.get(win); + if (panels) { + panels.delete(this._getPanelForNode(aPanel)); + } + }, + + ensureButtonContextMenu: function(aNode, aAreaNode) { + const kPanelItemContextMenu = "customizationPanelItemContextMenu"; + + let currentContextMenu = aNode.getAttribute("context") || + aNode.getAttribute("contextmenu"); + let place = CustomizableUI.getPlaceForItem(aAreaNode); + let contextMenuForPlace = place == "panel" ? + kPanelItemContextMenu : + null; + if (contextMenuForPlace && !currentContextMenu) { + aNode.setAttribute("context", contextMenuForPlace); + } else if (currentContextMenu == kPanelItemContextMenu && + contextMenuForPlace != kPanelItemContextMenu) { + aNode.removeAttribute("context"); + aNode.removeAttribute("contextmenu"); + } + }, + + getWidgetProvider: function(aWidgetId) { + if (this.isSpecialWidget(aWidgetId)) { + return CustomizableUI.PROVIDER_SPECIAL; + } + if (gPalette.has(aWidgetId)) { + return CustomizableUI.PROVIDER_API; + } + // If this was an API widget that was destroyed, return null: + if (gSeenWidgets.has(aWidgetId)) { + return null; + } + + // We fall back to the XUL provider, but we don't know for sure (at this + // point) whether it exists there either. So the API is technically lying. + // Ideally, it would be able to return an error value (or throw an + // exception) if it really didn't exist. Our code calling this function + // handles that fine, but this is a public API. + return CustomizableUI.PROVIDER_XUL; + }, + + getWidgetNode: function(aWidgetId, aWindow) { + let document = aWindow.document; + + if (this.isSpecialWidget(aWidgetId)) { + let widgetNode = document.getElementById(aWidgetId) || + this.createSpecialWidget(aWidgetId, document); + return [ CustomizableUI.PROVIDER_SPECIAL, widgetNode]; + } + + let widget = gPalette.get(aWidgetId); + if (widget) { + // If we have an instance of this widget already, just use that. + if (widget.instances.has(document)) { + log.debug("An instance of widget " + aWidgetId + " already exists in this " + + "document. Reusing."); + return [ CustomizableUI.PROVIDER_API, + widget.instances.get(document) ]; + } + + return [ CustomizableUI.PROVIDER_API, + this.buildWidget(document, widget) ]; + } + + log.debug("Searching for " + aWidgetId + " in toolbox."); + let node = this.findWidgetInWindow(aWidgetId, aWindow); + if (node) { + return [ CustomizableUI.PROVIDER_XUL, node ]; + } + + log.debug("No node for " + aWidgetId + " found."); + return [null, null]; + }, + + registerMenuPanel: function(aPanelContents) { + if (gBuildAreas.has(CustomizableUI.AREA_PANEL) && + gBuildAreas.get(CustomizableUI.AREA_PANEL).has(aPanelContents)) { + return; + } + + let document = aPanelContents.ownerDocument; + + aPanelContents.toolbox = document.getElementById("navigator-toolbox"); + aPanelContents.customizationTarget = aPanelContents; + + this.addPanelCloseListeners(this._getPanelForNode(aPanelContents)); + + let placements = gPlacements.get(CustomizableUI.AREA_PANEL); + this.buildArea(CustomizableUI.AREA_PANEL, placements, aPanelContents); + this.notifyListeners("onAreaNodeRegistered", CustomizableUI.AREA_PANEL, aPanelContents); + + for (let child of aPanelContents.children) { + if (child.localName != "toolbarbutton") { + if (child.localName == "toolbaritem") { + this.ensureButtonContextMenu(child, aPanelContents); + } + continue; + } + this.ensureButtonContextMenu(child, aPanelContents); + child.setAttribute("wrap", "true"); + } + + this.registerBuildArea(CustomizableUI.AREA_PANEL, aPanelContents); + }, + + onWidgetAdded: function(aWidgetId, aArea, aPosition) { + this.insertNode(aWidgetId, aArea, aPosition, true); + + if (!gResetting) { + this._clearPreviousUIState(); + } + }, + + onWidgetRemoved: function(aWidgetId, aArea) { + let areaNodes = gBuildAreas.get(aArea); + if (!areaNodes) { + return; + } + + let area = gAreas.get(aArea); + let isToolbar = area.get("type") == CustomizableUI.TYPE_TOOLBAR; + let isOverflowable = isToolbar && area.get("overflowable"); + let showInPrivateBrowsing = gPalette.has(aWidgetId) + ? gPalette.get(aWidgetId).showInPrivateBrowsing + : true; + + for (let areaNode of areaNodes) { + let window = areaNode.ownerGlobal; + if (!showInPrivateBrowsing && + PrivateBrowsingUtils.isWindowPrivate(window)) { + continue; + } + + let container = areaNode.customizationTarget; + let widgetNode = window.document.getElementById(aWidgetId); + if (widgetNode && isOverflowable) { + container = areaNode.overflowable.getContainerFor(widgetNode); + } + + if (!widgetNode || !container.contains(widgetNode)) { + log.info("Widget " + aWidgetId + " not found, unable to remove from " + aArea); + continue; + } + + this.notifyListeners("onWidgetBeforeDOMChange", widgetNode, null, container, true); + + // We remove location attributes here to make sure they're gone too when a + // widget is removed from a toolbar to the palette. See bug 930950. + this.removeLocationAttributes(widgetNode); + // We also need to remove the panel context menu if it's there: + this.ensureButtonContextMenu(widgetNode); + widgetNode.removeAttribute("wrap"); + if (gPalette.has(aWidgetId) || this.isSpecialWidget(aWidgetId)) { + container.removeChild(widgetNode); + } else { + areaNode.toolbox.palette.appendChild(widgetNode); + } + this.notifyListeners("onWidgetAfterDOMChange", widgetNode, null, container, true); + + if (isToolbar) { + areaNode.setAttribute("currentset", gPlacements.get(aArea).join(',')); + } + + let windowCache = gSingleWrapperCache.get(window); + if (windowCache) { + windowCache.delete(aWidgetId); + } + } + if (!gResetting) { + this._clearPreviousUIState(); + } + }, + + onWidgetMoved: function(aWidgetId, aArea, aOldPosition, aNewPosition) { + this.insertNode(aWidgetId, aArea, aNewPosition); + if (!gResetting) { + this._clearPreviousUIState(); + } + }, + + onCustomizeEnd: function(aWindow) { + this._clearPreviousUIState(); + }, + + registerBuildArea: function(aArea, aNode) { + // We ensure that the window is registered to have its customization data + // cleaned up when unloading. + let window = aNode.ownerGlobal; + if (window.closed) { + return; + } + this.registerBuildWindow(window); + + // Also register this build area's toolbox. + if (aNode.toolbox) { + gBuildWindows.get(window).add(aNode.toolbox); + } + + if (!gBuildAreas.has(aArea)) { + gBuildAreas.set(aArea, new Set()); + } + + gBuildAreas.get(aArea).add(aNode); + + // Give a class to all customize targets to be used for styling in Customize Mode + let customizableNode = this.getCustomizeTargetForArea(aArea, window); + customizableNode.classList.add("customization-target"); + }, + + registerBuildWindow: function(aWindow) { + if (!gBuildWindows.has(aWindow)) { + gBuildWindows.set(aWindow, new Set()); + + aWindow.addEventListener("unload", this); + aWindow.addEventListener("command", this, true); + + this.notifyListeners("onWindowOpened", aWindow); + } + }, + + unregisterBuildWindow: function(aWindow) { + aWindow.removeEventListener("unload", this); + aWindow.removeEventListener("command", this, true); + gPanelsForWindow.delete(aWindow); + gBuildWindows.delete(aWindow); + gSingleWrapperCache.delete(aWindow); + let document = aWindow.document; + + for (let [areaId, areaNodes] of gBuildAreas) { + let areaProperties = gAreas.get(areaId); + for (let node of areaNodes) { + if (node.ownerDocument == document) { + this.notifyListeners("onAreaNodeUnregistered", areaId, node.customizationTarget, + CustomizableUI.REASON_WINDOW_CLOSED); + if (areaProperties.has("overflowable")) { + node.overflowable.uninit(); + node.overflowable = null; + } + areaNodes.delete(node); + } + } + } + + for (let [, widget] of gPalette) { + widget.instances.delete(document); + this.notifyListeners("onWidgetInstanceRemoved", widget.id, document); + } + + for (let [, areaMap] of gPendingBuildAreas) { + let toDelete = []; + for (let [areaNode, ] of areaMap) { + if (areaNode.ownerDocument == document) { + toDelete.push(areaNode); + } + } + for (let areaNode of toDelete) { + areaMap.delete(areaNode); + } + } + + this.notifyListeners("onWindowClosed", aWindow); + }, + + setLocationAttributes: function(aNode, aArea) { + let props = gAreas.get(aArea); + if (!props) { + throw new Error("Expected area " + aArea + " to have a properties Map " + + "associated with it."); + } + + aNode.setAttribute("cui-areatype", props.get("type") || ""); + let anchor = props.get("anchor"); + if (anchor) { + aNode.setAttribute("cui-anchorid", anchor); + } else { + aNode.removeAttribute("cui-anchorid"); + } + }, + + removeLocationAttributes: function(aNode) { + aNode.removeAttribute("cui-areatype"); + aNode.removeAttribute("cui-anchorid"); + }, + + insertNode: function(aWidgetId, aArea, aPosition, isNew) { + let areaNodes = gBuildAreas.get(aArea); + if (!areaNodes) { + return; + } + + let placements = gPlacements.get(aArea); + if (!placements) { + log.error("Could not find any placements for " + aArea + + " when moving a widget."); + return; + } + + // Go through each of the nodes associated with this area and move the + // widget to the requested location. + for (let areaNode of areaNodes) { + this.insertNodeInWindow(aWidgetId, areaNode, isNew); + } + }, + + insertNodeInWindow: function(aWidgetId, aAreaNode, isNew) { + let window = aAreaNode.ownerGlobal; + let showInPrivateBrowsing = gPalette.has(aWidgetId) + ? gPalette.get(aWidgetId).showInPrivateBrowsing + : true; + + if (!showInPrivateBrowsing && PrivateBrowsingUtils.isWindowPrivate(window)) { + return; + } + + let [, widgetNode] = this.getWidgetNode(aWidgetId, window); + if (!widgetNode) { + log.error("Widget '" + aWidgetId + "' not found, unable to move"); + return; + } + + let areaId = aAreaNode.id; + if (isNew) { + this.ensureButtonContextMenu(widgetNode, aAreaNode); + if (widgetNode.localName == "toolbarbutton" && areaId == CustomizableUI.AREA_PANEL) { + widgetNode.setAttribute("wrap", "true"); + } + } + + let [insertionContainer, nextNode] = this.findInsertionPoints(widgetNode, aAreaNode); + this.insertWidgetBefore(widgetNode, nextNode, insertionContainer, areaId); + + if (gAreas.get(areaId).get("type") == CustomizableUI.TYPE_TOOLBAR) { + aAreaNode.setAttribute("currentset", gPlacements.get(areaId).join(',')); + } + }, + + findInsertionPoints: function(aNode, aAreaNode) { + let areaId = aAreaNode.id; + let props = gAreas.get(areaId); + + // For overflowable toolbars, rely on them (because the work is more complicated): + if (props.get("type") == CustomizableUI.TYPE_TOOLBAR && props.get("overflowable")) { + return aAreaNode.overflowable.findOverflowedInsertionPoints(aNode); + } + + let container = aAreaNode.customizationTarget; + let placements = gPlacements.get(areaId); + let nodeIndex = placements.indexOf(aNode.id); + + while (++nodeIndex < placements.length) { + let nextNodeId = placements[nodeIndex]; + let nextNode = container.getElementsByAttribute("id", nextNodeId).item(0); + + if (nextNode) { + return [container, nextNode]; + } + } + + return [container, null]; + }, + + insertWidgetBefore: function(aNode, aNextNode, aContainer, aArea) { + this.notifyListeners("onWidgetBeforeDOMChange", aNode, aNextNode, aContainer); + this.setLocationAttributes(aNode, aArea); + aContainer.insertBefore(aNode, aNextNode); + this.notifyListeners("onWidgetAfterDOMChange", aNode, aNextNode, aContainer); + }, + + handleEvent: function(aEvent) { + switch (aEvent.type) { + case "command": + if (!this._originalEventInPanel(aEvent)) { + break; + } + aEvent = aEvent.sourceEvent; + // Fall through + case "click": + case "keypress": + this.maybeAutoHidePanel(aEvent); + break; + case "unload": + this.unregisterBuildWindow(aEvent.currentTarget); + break; + } + }, + + _originalEventInPanel: function(aEvent) { + let e = aEvent.sourceEvent; + if (!e) { + return false; + } + let node = this._getPanelForNode(e.target); + if (!node) { + return false; + } + let win = e.view; + let panels = gPanelsForWindow.get(win); + return !!panels && panels.has(node); + }, + + isSpecialWidget: function(aId) { + return (aId.startsWith(kSpecialWidgetPfx) || + aId.startsWith("separator") || + aId.startsWith("spring") || + aId.startsWith("spacer")); + }, + + ensureSpecialWidgetId: function(aId) { + let nodeType = aId.match(/spring|spacer|separator/)[0]; + // If the ID we were passed isn't a generated one, generate one now: + if (nodeType == aId) { + // Ids are differentiated through a unique count suffix. + return kSpecialWidgetPfx + aId + (++gNewElementCount); + } + return aId; + }, + + createSpecialWidget: function(aId, aDocument) { + let nodeName = "toolbar" + aId.match(/spring|spacer|separator/)[0]; + let node = aDocument.createElementNS(kNSXUL, nodeName); + node.id = this.ensureSpecialWidgetId(aId); + if (nodeName == "toolbarspring") { + node.flex = 1; + } + return node; + }, + + /* Find a XUL-provided widget in a window. Don't try to use this + * for an API-provided widget or a special widget. + */ + findWidgetInWindow: function(aId, aWindow) { + if (!gBuildWindows.has(aWindow)) { + throw new Error("Build window not registered"); + } + + if (!aId) { + log.error("findWidgetInWindow was passed an empty string."); + return null; + } + + let document = aWindow.document; + + // look for a node with the same id, as the node may be + // in a different toolbar. + let node = document.getElementById(aId); + if (node) { + let parent = node.parentNode; + while (parent && !(parent.customizationTarget || + parent == aWindow.gNavToolbox.palette)) { + parent = parent.parentNode; + } + + if (parent) { + let nodeInArea = node.parentNode.localName == "toolbarpaletteitem" ? + node.parentNode : node; + // Check if we're in a customization target, or in the palette: + if ((parent.customizationTarget == nodeInArea.parentNode && + gBuildWindows.get(aWindow).has(parent.toolbox)) || + aWindow.gNavToolbox.palette == nodeInArea.parentNode) { + // Normalize the removable attribute. For backwards compat, if + // the widget is not located in a toolbox palette then absence + // of the "removable" attribute means it is not removable. + if (!node.hasAttribute("removable")) { + // If we first see this in customization mode, it may be in the + // customization palette instead of the toolbox palette. + node.setAttribute("removable", !parent.customizationTarget); + } + return node; + } + } + } + + let toolboxes = gBuildWindows.get(aWindow); + for (let toolbox of toolboxes) { + if (toolbox.palette) { + // Attempt to locate a node with a matching ID within + // the palette. + let node = toolbox.palette.getElementsByAttribute("id", aId)[0]; + if (node) { + // Normalize the removable attribute. For backwards compat, this + // is optional if the widget is located in the toolbox palette, + // and defaults to *true*, unlike if it was located elsewhere. + if (!node.hasAttribute("removable")) { + node.setAttribute("removable", true); + } + return node; + } + } + } + return null; + }, + + buildWidget: function(aDocument, aWidget) { + if (aDocument.documentURI != kExpectedWindowURL) { + throw new Error("buildWidget was called for a non-browser window!"); + } + if (typeof aWidget == "string") { + aWidget = gPalette.get(aWidget); + } + if (!aWidget) { + throw new Error("buildWidget was passed a non-widget to build."); + } + + log.debug("Building " + aWidget.id + " of type " + aWidget.type); + + let node; + if (aWidget.type == "custom") { + if (aWidget.onBuild) { + node = aWidget.onBuild(aDocument); + } + if (!node || !(node instanceof aDocument.defaultView.XULElement)) + log.error("Custom widget with id " + aWidget.id + " does not return a valid node"); + } + else { + if (aWidget.onBeforeCreated) { + aWidget.onBeforeCreated(aDocument); + } + node = aDocument.createElementNS(kNSXUL, "toolbarbutton"); + + node.setAttribute("id", aWidget.id); + node.setAttribute("widget-id", aWidget.id); + node.setAttribute("widget-type", aWidget.type); + if (aWidget.disabled) { + node.setAttribute("disabled", true); + } + node.setAttribute("removable", aWidget.removable); + node.setAttribute("overflows", aWidget.overflows); + if (aWidget.tabSpecific) { + node.setAttribute("tabspecific", aWidget.tabSpecific); + } + node.setAttribute("label", this.getLocalizedProperty(aWidget, "label")); + let additionalTooltipArguments = []; + if (aWidget.shortcutId) { + let keyEl = aDocument.getElementById(aWidget.shortcutId); + if (keyEl) { + additionalTooltipArguments.push(ShortcutUtils.prettifyShortcut(keyEl)); + } else { + log.error("Key element with id '" + aWidget.shortcutId + "' for widget '" + aWidget.id + + "' not found!"); + } + } + + let tooltip = this.getLocalizedProperty(aWidget, "tooltiptext", additionalTooltipArguments); + if (tooltip) { + node.setAttribute("tooltiptext", tooltip); + } + node.setAttribute("class", "toolbarbutton-1 chromeclass-toolbar-additional"); + + let commandHandler = this.handleWidgetCommand.bind(this, aWidget, node); + node.addEventListener("command", commandHandler, false); + let clickHandler = this.handleWidgetClick.bind(this, aWidget, node); + node.addEventListener("click", clickHandler, false); + + // If the widget has a view, and has view showing / hiding listeners, + // hook those up to this widget. + if (aWidget.type == "view") { + log.debug("Widget " + aWidget.id + " has a view. Auto-registering event handlers."); + let viewNode = aDocument.getElementById(aWidget.viewId); + + if (viewNode) { + // PanelUI relies on the .PanelUI-subView class to be able to show only + // one sub-view at a time. + viewNode.classList.add("PanelUI-subView"); + + for (let eventName of kSubviewEvents) { + let handler = "on" + eventName; + if (typeof aWidget[handler] == "function") { + viewNode.addEventListener(eventName, aWidget[handler], false); + } + } + + log.debug("Widget " + aWidget.id + " showing and hiding event handlers set."); + } else { + log.error("Could not find the view node with id: " + aWidget.viewId + + ", for widget: " + aWidget.id + "."); + } + } + + if (aWidget.onCreated) { + aWidget.onCreated(node); + } + } + + aWidget.instances.set(aDocument, node); + return node; + }, + + getLocalizedProperty: function(aWidget, aProp, aFormatArgs, aDef) { + const kReqStringProps = ["label"]; + + if (typeof aWidget == "string") { + aWidget = gPalette.get(aWidget); + } + if (!aWidget) { + throw new Error("getLocalizedProperty was passed a non-widget to work with."); + } + let def, name; + // Let widgets pass their own string identifiers or strings, so that + // we can use strings which aren't the default (in case string ids change) + // and so that non-builtin-widgets can also provide labels, tooltips, etc. + if (aWidget[aProp] != null) { + name = aWidget[aProp]; + // By using this as the default, if a widget provides a full string rather + // than a string ID for localization, we will fall back to that string + // and return that. + def = aDef || name; + } else { + name = aWidget.id + "." + aProp; + def = aDef || ""; + } + try { + if (Array.isArray(aFormatArgs) && aFormatArgs.length) { + return gWidgetsBundle.formatStringFromName(name, aFormatArgs, + aFormatArgs.length) || def; + } + return gWidgetsBundle.GetStringFromName(name) || def; + } catch (ex) { + // If an empty string was explicitly passed, treat it as an actual + // value rather than a missing property. + if (!def && (name != "" || kReqStringProps.includes(aProp))) { + log.error("Could not localize property '" + name + "'."); + } + } + return def; + }, + + addShortcut: function(aShortcutNode, aTargetNode) { + if (!aTargetNode) + aTargetNode = aShortcutNode; + let document = aShortcutNode.ownerDocument; + + // Detect if we've already been here before. + if (!aTargetNode || aTargetNode.hasAttribute("shortcut")) + return; + + let shortcutId = aShortcutNode.getAttribute("key"); + let shortcut; + if (shortcutId) { + shortcut = document.getElementById(shortcutId); + } else { + let commandId = aShortcutNode.getAttribute("command"); + if (commandId) + shortcut = ShortcutUtils.findShortcut(document.getElementById(commandId)); + } + if (!shortcut) { + return; + } + + aTargetNode.setAttribute("shortcut", ShortcutUtils.prettifyShortcut(shortcut)); + }, + + handleWidgetCommand: function(aWidget, aNode, aEvent) { + log.debug("handleWidgetCommand"); + + if (aWidget.type == "button") { + if (aWidget.onCommand) { + try { + aWidget.onCommand.call(null, aEvent); + } catch (e) { + log.error(e); + } + } else { + // XXXunf Need to think this through more, and formalize. + Services.obs.notifyObservers(aNode, + "customizedui-widget-command", + aWidget.id); + } + } else if (aWidget.type == "view") { + let ownerWindow = aNode.ownerGlobal; + let area = this.getPlacementOfWidget(aNode.id).area; + let anchor = aNode; + if (area != CustomizableUI.AREA_PANEL) { + let wrapper = this.wrapWidget(aWidget.id).forWindow(ownerWindow); + if (wrapper && wrapper.anchor) { + this.hidePanelForNode(aNode); + anchor = wrapper.anchor; + } + } + ownerWindow.PanelUI.showSubView(aWidget.viewId, anchor, area); + } + }, + + handleWidgetClick: function(aWidget, aNode, aEvent) { + log.debug("handleWidgetClick"); + if (aWidget.onClick) { + try { + aWidget.onClick.call(null, aEvent); + } catch (e) { + Cu.reportError(e); + } + } else { + // XXXunf Need to think this through more, and formalize. + Services.obs.notifyObservers(aNode, "customizedui-widget-click", aWidget.id); + } + }, + + _getPanelForNode: function(aNode) { + let panel = aNode; + while (panel && panel.localName != "panel") + panel = panel.parentNode; + return panel; + }, + + /* + * If people put things in the panel which need more than single-click interaction, + * we don't want to close it. Right now we check for text inputs and menu buttons. + * We also check for being outside of any toolbaritem/toolbarbutton, ie on a blank + * part of the menu. + */ + _isOnInteractiveElement: function(aEvent) { + function getMenuPopupForDescendant(aNode) { + let lastPopup = null; + while (aNode && aNode.parentNode && + aNode.parentNode.localName.startsWith("menu")) { + lastPopup = aNode.localName == "menupopup" ? aNode : lastPopup; + aNode = aNode.parentNode; + } + return lastPopup; + } + + let target = aEvent.originalTarget; + let panel = this._getPanelForNode(aEvent.currentTarget); + // This can happen in e.g. customize mode. If there's no panel, + // there's clearly nothing for us to close; pretend we're interactive. + if (!panel) { + return true; + } + // We keep track of: + // whether we're in an input container (text field) + let inInput = false; + // whether we're in a popup/context menu + let inMenu = false; + // whether we're in a toolbarbutton/toolbaritem + let inItem = false; + // whether the current menuitem has a valid closemenu attribute + let menuitemCloseMenu = "auto"; + // whether the toolbarbutton/item has a valid closemenu attribute. + let closemenu = "auto"; + + // While keeping track of that, we go from the original target back up, + // to the panel if we have to. We bail as soon as we find an input, + // a toolbarbutton/item, or the panel: + while (true && target) { + // Skip out of iframes etc: + if (target.nodeType == target.DOCUMENT_NODE) { + if (!target.defaultView) { + // Err, we're done. + break; + } + // Cue some voodoo + target = target.defaultView.QueryInterface(Ci.nsIInterfaceRequestor) + .getInterface(Ci.nsIWebNavigation) + .QueryInterface(Ci.nsIDocShell) + .chromeEventHandler; + if (!target) { + break; + } + } + let tagName = target.localName; + inInput = tagName == "input" || tagName == "textbox"; + inItem = tagName == "toolbaritem" || tagName == "toolbarbutton"; + let isMenuItem = tagName == "menuitem"; + inMenu = inMenu || isMenuItem; + if (inItem && target.hasAttribute("closemenu")) { + let closemenuVal = target.getAttribute("closemenu"); + closemenu = (closemenuVal == "single" || closemenuVal == "none") ? + closemenuVal : "auto"; + } + + if (isMenuItem && target.hasAttribute("closemenu")) { + let closemenuVal = target.getAttribute("closemenu"); + menuitemCloseMenu = (closemenuVal == "single" || closemenuVal == "none") ? + closemenuVal : "auto"; + } + // Break out of the loop immediately for disabled items, as we need to + // keep the menu open in that case. + if (target.getAttribute("disabled") == "true") { + return true; + } + + // This isn't in the loop condition because we want to break before + // changing |target| if any of these conditions are true + if (inInput || inItem || target == panel) { + break; + } + // We need specific code for popups: the item on which they were invoked + // isn't necessarily in their parentNode chain: + if (isMenuItem) { + let topmostMenuPopup = getMenuPopupForDescendant(target); + target = (topmostMenuPopup && topmostMenuPopup.triggerNode) || + target.parentNode; + } else { + target = target.parentNode; + } + } + + // If the user clicked a menu item... + if (inMenu) { + // We care if we're in an input also, + // or if the user specified closemenu!="auto": + if (inInput || menuitemCloseMenu != "auto") { + return true; + } + // Otherwise, we're probably fine to close the panel + return false; + } + // If we're not in a menu, and we *are* in a type="menu" toolbarbutton, + // we'll now interact with the menu + if (inItem && target.getAttribute("type") == "menu") { + return true; + } + // If we're not in a menu, and we *are* in a type="menu-button" toolbarbutton, + // it depends whether we're in the dropmarker or the 'real' button: + if (inItem && target.getAttribute("type") == "menu-button") { + // 'real' button (which has a single action): + if (target.getAttribute("anonid") == "button") { + return closemenu != "none"; + } + // otherwise, this is the outer button, and the user will now + // interact with the menu: + return true; + } + return inInput || !inItem; + }, + + hidePanelForNode: function(aNode) { + let panel = this._getPanelForNode(aNode); + if (panel) { + panel.hidePopup(); + } + }, + + maybeAutoHidePanel: function(aEvent) { + if (aEvent.type == "keypress") { + if (aEvent.keyCode != aEvent.DOM_VK_RETURN) { + return; + } + // If the user hit enter/return, we don't check preventDefault - it makes sense + // that this was prevented, but we probably still want to close the panel. + // If consumers don't want this to happen, they should specify the closemenu + // attribute. + + } else if (aEvent.type != "command") { // mouse events: + if (aEvent.defaultPrevented || aEvent.button != 0) { + return; + } + let isInteractive = this._isOnInteractiveElement(aEvent); + log.debug("maybeAutoHidePanel: interactive ? " + isInteractive); + if (isInteractive) { + return; + } + } + + // We can't use event.target because we might have passed a panelview + // anonymous content boundary as well, and so target points to the + // panelmultiview in that case. Unfortunately, this means we get + // anonymous child nodes instead of the real ones, so looking for the + // 'stoooop, don't close me' attributes is more involved. + let target = aEvent.originalTarget; + let closemenu = "auto"; + let widgetType = "button"; + while (target.parentNode && target.localName != "panel") { + closemenu = target.getAttribute("closemenu"); + widgetType = target.getAttribute("widget-type"); + if (closemenu == "none" || closemenu == "single" || + widgetType == "view") { + break; + } + target = target.parentNode; + } + if (closemenu == "none" || widgetType == "view") { + return; + } + + if (closemenu == "single") { + let panel = this._getPanelForNode(target); + let multiview = panel.querySelector("panelmultiview"); + if (multiview.showingSubView) { + multiview.showMainView(); + return; + } + } + + // If we get here, we can actually hide the popup: + this.hidePanelForNode(aEvent.target); + }, + + getUnusedWidgets: function(aWindowPalette) { + let window = aWindowPalette.ownerGlobal; + let isWindowPrivate = PrivateBrowsingUtils.isWindowPrivate(window); + // We use a Set because there can be overlap between the widgets in + // gPalette and the items in the palette, especially after the first + // customization, since programmatically generated widgets will remain + // in the toolbox palette. + let widgets = new Set(); + + // It's possible that some widgets have been defined programmatically and + // have not been overlayed into the palette. We can find those inside + // gPalette. + for (let [id, widget] of gPalette) { + if (!widget.currentArea) { + if (widget.showInPrivateBrowsing || !isWindowPrivate) { + widgets.add(id); + } + } + } + + log.debug("Iterating the actual nodes of the window palette"); + for (let node of aWindowPalette.children) { + log.debug("In palette children: " + node.id); + if (node.id && !this.getPlacementOfWidget(node.id)) { + widgets.add(node.id); + } + } + + return [...widgets]; + }, + + getPlacementOfWidget: function(aWidgetId, aOnlyRegistered, aDeadAreas) { + if (aOnlyRegistered && !this.widgetExists(aWidgetId)) { + return null; + } + + for (let [area, placements] of gPlacements) { + if (!gAreas.has(area) && !aDeadAreas) { + continue; + } + let index = placements.indexOf(aWidgetId); + if (index != -1) { + return { area: area, position: index }; + } + } + + return null; + }, + + widgetExists: function(aWidgetId) { + if (gPalette.has(aWidgetId) || this.isSpecialWidget(aWidgetId)) { + return true; + } + + // Destroyed API widgets are in gSeenWidgets, but not in gPalette: + if (gSeenWidgets.has(aWidgetId)) { + return false; + } + + // We're assuming XUL widgets always exist, as it's much harder to check, + // and checking would be much more error prone. + return true; + }, + + addWidgetToArea: function(aWidgetId, aArea, aPosition, aInitialAdd) { + if (!gAreas.has(aArea)) { + throw new Error("Unknown customization area: " + aArea); + } + + // Hack: don't want special widgets in the panel (need to check here as well + // as in canWidgetMoveToArea because the menu panel is lazy): + if (gAreas.get(aArea).get("type") == CustomizableUI.TYPE_MENU_PANEL && + this.isSpecialWidget(aWidgetId)) { + return; + } + + // If this is a lazy area that hasn't been restored yet, we can't yet modify + // it - would would at least like to add to it. So we keep track of it in + // gFuturePlacements, and use that to add it when restoring the area. We + // throw away aPosition though, as that can only be bogus if the area hasn't + // yet been restorted (caller can't possibly know where its putting the + // widget in relation to other widgets). + if (this.isAreaLazy(aArea)) { + gFuturePlacements.get(aArea).add(aWidgetId); + return; + } + + if (this.isSpecialWidget(aWidgetId)) { + aWidgetId = this.ensureSpecialWidgetId(aWidgetId); + } + + let oldPlacement = this.getPlacementOfWidget(aWidgetId, false, true); + if (oldPlacement && oldPlacement.area == aArea) { + this.moveWidgetWithinArea(aWidgetId, aPosition); + return; + } + + // Do nothing if the widget is not allowed to move to the target area. + if (!this.canWidgetMoveToArea(aWidgetId, aArea)) { + return; + } + + if (oldPlacement) { + this.removeWidgetFromArea(aWidgetId); + } + + if (!gPlacements.has(aArea)) { + gPlacements.set(aArea, [aWidgetId]); + aPosition = 0; + } else { + let placements = gPlacements.get(aArea); + if (typeof aPosition != "number") { + aPosition = placements.length; + } + if (aPosition < 0) { + aPosition = 0; + } + placements.splice(aPosition, 0, aWidgetId); + } + + let widget = gPalette.get(aWidgetId); + if (widget) { + widget.currentArea = aArea; + widget.currentPosition = aPosition; + } + + // We initially set placements with addWidgetToArea, so in that case + // we don't consider the area "dirtied". + if (!aInitialAdd) { + gDirtyAreaCache.add(aArea); + } + + gDirty = true; + this.saveState(); + + this.notifyListeners("onWidgetAdded", aWidgetId, aArea, aPosition); + }, + + removeWidgetFromArea: function(aWidgetId) { + let oldPlacement = this.getPlacementOfWidget(aWidgetId, false, true); + if (!oldPlacement) { + return; + } + + if (!this.isWidgetRemovable(aWidgetId)) { + return; + } + + let placements = gPlacements.get(oldPlacement.area); + let position = placements.indexOf(aWidgetId); + if (position != -1) { + placements.splice(position, 1); + } + + let widget = gPalette.get(aWidgetId); + if (widget) { + widget.currentArea = null; + widget.currentPosition = null; + } + + gDirty = true; + this.saveState(); + gDirtyAreaCache.add(oldPlacement.area); + + this.notifyListeners("onWidgetRemoved", aWidgetId, oldPlacement.area); + }, + + moveWidgetWithinArea: function(aWidgetId, aPosition) { + let oldPlacement = this.getPlacementOfWidget(aWidgetId); + if (!oldPlacement) { + return; + } + + let placements = gPlacements.get(oldPlacement.area); + if (typeof aPosition != "number") { + aPosition = placements.length; + } else if (aPosition < 0) { + aPosition = 0; + } else if (aPosition > placements.length) { + aPosition = placements.length; + } + + let widget = gPalette.get(aWidgetId); + if (widget) { + widget.currentPosition = aPosition; + widget.currentArea = oldPlacement.area; + } + + if (aPosition == oldPlacement.position) { + return; + } + + placements.splice(oldPlacement.position, 1); + // If we just removed the item from *before* where it is now added, + // we need to compensate the position offset for that: + if (oldPlacement.position < aPosition) { + aPosition--; + } + placements.splice(aPosition, 0, aWidgetId); + + gDirty = true; + gDirtyAreaCache.add(oldPlacement.area); + + this.saveState(); + + this.notifyListeners("onWidgetMoved", aWidgetId, oldPlacement.area, + oldPlacement.position, aPosition); + }, + + // Note that this does not populate gPlacements, which is done lazily so that + // the legacy state can be migrated, which is only available once a browser + // window is openned. + // The panel area is an exception here, since it has no legacy state and is + // built lazily - and therefore wouldn't otherwise result in restoring its + // state immediately when a browser window opens, which is important for + // other consumers of this API. + loadSavedState: function() { + let state = null; + try { + state = Services.prefs.getCharPref(kPrefCustomizationState); + } catch (e) { + log.debug("No saved state found"); + // This will fail if nothing has been customized, so silently fall back to + // the defaults. + } + + if (!state) { + return; + } + try { + gSavedState = JSON.parse(state); + if (typeof gSavedState != "object" || gSavedState === null) { + throw "Invalid saved state"; + } + } catch (e) { + Services.prefs.clearUserPref(kPrefCustomizationState); + gSavedState = {}; + log.debug("Error loading saved UI customization state, falling back to defaults."); + } + + if (!("placements" in gSavedState)) { + gSavedState.placements = {}; + } + + if (!("currentVersion" in gSavedState)) { + gSavedState.currentVersion = 0; + } + + gSeenWidgets = new Set(gSavedState.seen || []); + gDirtyAreaCache = new Set(gSavedState.dirtyAreaCache || []); + gNewElementCount = gSavedState.newElementCount || 0; + }, + + restoreStateForArea: function(aArea, aLegacyState) { + let placementsPreexisted = gPlacements.has(aArea); + + this.beginBatchUpdate(); + try { + gRestoring = true; + + let restored = false; + if (placementsPreexisted) { + log.debug("Restoring " + aArea + " from pre-existing placements"); + for (let [position, id] of gPlacements.get(aArea).entries()) { + this.moveWidgetWithinArea(id, position); + } + gDirty = false; + restored = true; + } else { + gPlacements.set(aArea, []); + } + + if (!restored && gSavedState && aArea in gSavedState.placements) { + log.debug("Restoring " + aArea + " from saved state"); + let placements = gSavedState.placements[aArea]; + for (let id of placements) + this.addWidgetToArea(id, aArea); + gDirty = false; + restored = true; + } + + if (!restored && aLegacyState) { + log.debug("Restoring " + aArea + " from legacy state"); + for (let id of aLegacyState) + this.addWidgetToArea(id, aArea); + // Don't override dirty state, to ensure legacy state is saved here and + // therefore only used once. + restored = true; + } + + if (!restored) { + log.debug("Restoring " + aArea + " from default state"); + let defaults = gAreas.get(aArea).get("defaultPlacements"); + if (defaults) { + for (let id of defaults) + this.addWidgetToArea(id, aArea, null, true); + } + gDirty = false; + } + + // Finally, add widgets to the area that were added before the it was able + // to be restored. This can occur when add-ons register widgets for a + // lazily-restored area before it's been restored. + if (gFuturePlacements.has(aArea)) { + for (let id of gFuturePlacements.get(aArea)) + this.addWidgetToArea(id, aArea); + gFuturePlacements.delete(aArea); + } + + log.debug("Placements for " + aArea + ":\n\t" + gPlacements.get(aArea).join("\n\t")); + + gRestoring = false; + } finally { + this.endBatchUpdate(); + } + }, + + saveState: function() { + if (gInBatchStack || !gDirty) { + return; + } + // Clone because we want to modify this map: + let state = { placements: new Map(gPlacements), + seen: gSeenWidgets, + dirtyAreaCache: gDirtyAreaCache, + currentVersion: kVersion, + newElementCount: gNewElementCount }; + + // Merge in previously saved areas if not present in gPlacements. + // This way, state is still persisted for e.g. temporarily disabled + // add-ons - see bug 989338. + if (gSavedState && gSavedState.placements) { + for (let area of Object.keys(gSavedState.placements)) { + if (!state.placements.has(area)) { + let placements = gSavedState.placements[area]; + state.placements.set(area, placements); + } + } + } + + log.debug("Saving state."); + let serialized = JSON.stringify(state, this.serializerHelper); + log.debug("State saved as: " + serialized); + Services.prefs.setCharPref(kPrefCustomizationState, serialized); + gDirty = false; + }, + + serializerHelper: function(aKey, aValue) { + if (typeof aValue == "object" && aValue.constructor.name == "Map") { + let result = {}; + for (let [mapKey, mapValue] of aValue) + result[mapKey] = mapValue; + return result; + } + + if (typeof aValue == "object" && aValue.constructor.name == "Set") { + return [...aValue]; + } + + return aValue; + }, + + beginBatchUpdate: function() { + gInBatchStack++; + }, + + endBatchUpdate: function(aForceDirty) { + gInBatchStack--; + if (aForceDirty === true) { + gDirty = true; + } + if (gInBatchStack == 0) { + this.saveState(); + } else if (gInBatchStack < 0) { + throw new Error("The batch editing stack should never reach a negative number."); + } + }, + + addListener: function(aListener) { + gListeners.add(aListener); + }, + + removeListener: function(aListener) { + if (aListener == this) { + return; + } + + gListeners.delete(aListener); + }, + + notifyListeners: function(aEvent, ...aArgs) { + if (gRestoring) { + return; + } + + for (let listener of gListeners) { + try { + if (typeof listener[aEvent] == "function") { + listener[aEvent].apply(listener, aArgs); + } + } catch (e) { + log.error(e + " -- " + e.fileName + ":" + e.lineNumber); + } + } + }, + + _dispatchToolboxEventToWindow: function(aEventType, aDetails, aWindow) { + let evt = new aWindow.CustomEvent(aEventType, { + bubbles: true, + cancelable: true, + detail: aDetails + }); + aWindow.gNavToolbox.dispatchEvent(evt); + }, + + dispatchToolboxEvent: function(aEventType, aDetails={}, aWindow=null) { + if (aWindow) { + this._dispatchToolboxEventToWindow(aEventType, aDetails, aWindow); + return; + } + for (let [win, ] of gBuildWindows) { + this._dispatchToolboxEventToWindow(aEventType, aDetails, win); + } + }, + + createWidget: function(aProperties) { + let widget = this.normalizeWidget(aProperties, CustomizableUI.SOURCE_EXTERNAL); + // XXXunf This should probably throw. + if (!widget) { + log.error("unable to normalize widget"); + return undefined; + } + + gPalette.set(widget.id, widget); + + // Clear our caches: + gGroupWrapperCache.delete(widget.id); + for (let [win, ] of gBuildWindows) { + let cache = gSingleWrapperCache.get(win); + if (cache) { + cache.delete(widget.id); + } + } + + this.notifyListeners("onWidgetCreated", widget.id); + + if (widget.defaultArea) { + let addToDefaultPlacements = false; + let area = gAreas.get(widget.defaultArea); + if (!CustomizableUI.isBuiltinToolbar(widget.defaultArea) && + widget.defaultArea != CustomizableUI.AREA_PANEL) { + addToDefaultPlacements = true; + } + + if (addToDefaultPlacements) { + if (area.has("defaultPlacements")) { + area.get("defaultPlacements").push(widget.id); + } else { + area.set("defaultPlacements", [widget.id]); + } + } + } + + // Look through previously saved state to see if we're restoring a widget. + let seenAreas = new Set(); + let widgetMightNeedAutoAdding = true; + for (let [area, ] of gPlacements) { + seenAreas.add(area); + let areaIsRegistered = gAreas.has(area); + let index = gPlacements.get(area).indexOf(widget.id); + if (index != -1) { + widgetMightNeedAutoAdding = false; + if (areaIsRegistered) { + widget.currentArea = area; + widget.currentPosition = index; + } + break; + } + } + + // Also look at saved state data directly in areas that haven't yet been + // restored. Can't rely on this for restored areas, as they may have + // changed. + if (widgetMightNeedAutoAdding && gSavedState) { + for (let area of Object.keys(gSavedState.placements)) { + if (seenAreas.has(area)) { + continue; + } + + let areaIsRegistered = gAreas.has(area); + let index = gSavedState.placements[area].indexOf(widget.id); + if (index != -1) { + widgetMightNeedAutoAdding = false; + if (areaIsRegistered) { + widget.currentArea = area; + widget.currentPosition = index; + } + break; + } + } + } + + // If we're restoring the widget to it's old placement, fire off the + // onWidgetAdded event - our own handler will take care of adding it to + // any build areas. + this.beginBatchUpdate(); + try { + if (widget.currentArea) { + this.notifyListeners("onWidgetAdded", widget.id, widget.currentArea, + widget.currentPosition); + } else if (widgetMightNeedAutoAdding) { + let autoAdd = true; + try { + autoAdd = Services.prefs.getBoolPref(kPrefCustomizationAutoAdd); + } catch (e) {} + + // If the widget doesn't have an existing placement, and it hasn't been + // seen before, then add it to its default area so it can be used. + // If the widget is not removable, we *have* to add it to its default + // area here. + let canBeAutoAdded = autoAdd && !gSeenWidgets.has(widget.id); + if (!widget.currentArea && (!widget.removable || canBeAutoAdded)) { + if (widget.defaultArea) { + if (this.isAreaLazy(widget.defaultArea)) { + gFuturePlacements.get(widget.defaultArea).add(widget.id); + } else { + this.addWidgetToArea(widget.id, widget.defaultArea); + } + } + } + } + } finally { + // Ensure we always have this widget in gSeenWidgets, and save + // state in case this needs to be done here. + gSeenWidgets.add(widget.id); + this.endBatchUpdate(true); + } + + this.notifyListeners("onWidgetAfterCreation", widget.id, widget.currentArea); + return widget.id; + }, + + createBuiltinWidget: function(aData) { + // This should only ever be called on startup, before any windows are + // opened - so we know there's no build areas to handle. Also, builtin + // widgets are expected to be (mostly) static, so shouldn't affect the + // current placement settings. + + // This allows a widget to be both built-in by default but also able to be + // destroyed and removed from the area based on criteria that may not be + // available when the widget is created -- for example, because some other + // feature in the browser supersedes the widget. + let conditionalDestroyPromise = aData.conditionalDestroyPromise || null; + delete aData.conditionalDestroyPromise; + + let widget = this.normalizeWidget(aData, CustomizableUI.SOURCE_BUILTIN); + if (!widget) { + log.error("Error creating builtin widget: " + aData.id); + return; + } + + log.debug("Creating built-in widget with id: " + widget.id); + gPalette.set(widget.id, widget); + + if (conditionalDestroyPromise) { + conditionalDestroyPromise.then(shouldDestroy => { + if (shouldDestroy) { + this.destroyWidget(widget.id); + this.removeWidgetFromArea(widget.id); + } + }, err => { + Cu.reportError(err); + }); + } + }, + + // Returns true if the area will eventually lazily restore (but hasn't yet). + isAreaLazy: function(aArea) { + if (gPlacements.has(aArea)) { + return false; + } + return gAreas.get(aArea).has("legacy"); + }, + + // XXXunf Log some warnings here, when the data provided isn't up to scratch. + normalizeWidget: function(aData, aSource) { + let widget = { + implementation: aData, + source: aSource || CustomizableUI.SOURCE_EXTERNAL, + instances: new Map(), + currentArea: null, + removable: true, + overflows: true, + defaultArea: null, + shortcutId: null, + tabSpecific: false, + tooltiptext: null, + showInPrivateBrowsing: true, + _introducedInVersion: -1, + }; + + if (typeof aData.id != "string" || !/^[a-z0-9-_]{1,}$/i.test(aData.id)) { + log.error("Given an illegal id in normalizeWidget: " + aData.id); + return null; + } + + delete widget.implementation.currentArea; + widget.implementation.__defineGetter__("currentArea", () => widget.currentArea); + + const kReqStringProps = ["id"]; + for (let prop of kReqStringProps) { + if (typeof aData[prop] != "string") { + log.error("Missing required property '" + prop + "' in normalizeWidget: " + + aData.id); + return null; + } + widget[prop] = aData[prop]; + } + + const kOptStringProps = ["label", "tooltiptext", "shortcutId"]; + for (let prop of kOptStringProps) { + if (typeof aData[prop] == "string") { + widget[prop] = aData[prop]; + } + } + + const kOptBoolProps = ["removable", "showInPrivateBrowsing", "overflows", "tabSpecific"]; + for (let prop of kOptBoolProps) { + if (typeof aData[prop] == "boolean") { + widget[prop] = aData[prop]; + } + } + + // When we normalize builtin widgets, areas have not yet been registered: + if (aData.defaultArea && + (aSource == CustomizableUI.SOURCE_BUILTIN || gAreas.has(aData.defaultArea))) { + widget.defaultArea = aData.defaultArea; + } else if (!widget.removable) { + log.error("Widget '" + widget.id + "' is not removable but does not specify " + + "a valid defaultArea. That's not possible; it must specify a " + + "valid defaultArea as well."); + return null; + } + + if ("type" in aData && gSupportedWidgetTypes.has(aData.type)) { + widget.type = aData.type; + } else { + widget.type = "button"; + } + + widget.disabled = aData.disabled === true; + + if (aSource == CustomizableUI.SOURCE_BUILTIN) { + widget._introducedInVersion = aData.introducedInVersion || 0; + } + + this.wrapWidgetEventHandler("onBeforeCreated", widget); + this.wrapWidgetEventHandler("onClick", widget); + this.wrapWidgetEventHandler("onCreated", widget); + this.wrapWidgetEventHandler("onDestroyed", widget); + + if (widget.type == "button") { + widget.onCommand = typeof aData.onCommand == "function" ? + aData.onCommand : + null; + } else if (widget.type == "view") { + if (typeof aData.viewId != "string") { + log.error("Expected a string for widget " + widget.id + " viewId, but got " + + aData.viewId); + return null; + } + widget.viewId = aData.viewId; + + this.wrapWidgetEventHandler("onViewShowing", widget); + this.wrapWidgetEventHandler("onViewHiding", widget); + } else if (widget.type == "custom") { + this.wrapWidgetEventHandler("onBuild", widget); + } + + if (gPalette.has(widget.id)) { + return null; + } + + return widget; + }, + + wrapWidgetEventHandler: function(aEventName, aWidget) { + if (typeof aWidget.implementation[aEventName] != "function") { + aWidget[aEventName] = null; + return; + } + aWidget[aEventName] = function(...aArgs) { + // Wrap inside a try...catch to properly log errors, until bug 862627 is + // fixed, which in turn might help bug 503244. + try { + // Don't copy the function to the normalized widget object, instead + // keep it on the original object provided to the API so that + // additional methods can be implemented and used by the event + // handlers. + return aWidget.implementation[aEventName].apply(aWidget.implementation, + aArgs); + } catch (e) { + Cu.reportError(e); + return undefined; + } + }; + }, + + destroyWidget: function(aWidgetId) { + let widget = gPalette.get(aWidgetId); + if (!widget) { + gGroupWrapperCache.delete(aWidgetId); + for (let [window, ] of gBuildWindows) { + let windowCache = gSingleWrapperCache.get(window); + if (windowCache) { + windowCache.delete(aWidgetId); + } + } + return; + } + + // Remove it from the default placements of an area if it was added there: + if (widget.defaultArea) { + let area = gAreas.get(widget.defaultArea); + if (area) { + let defaultPlacements = area.get("defaultPlacements"); + // We can assume this is present because if a widget has a defaultArea, + // we automatically create a defaultPlacements array for that area. + let widgetIndex = defaultPlacements.indexOf(aWidgetId); + if (widgetIndex != -1) { + defaultPlacements.splice(widgetIndex, 1); + } + } + } + + // This will not remove the widget from gPlacements - we want to keep the + // setting so the widget gets put back in it's old position if/when it + // returns. + for (let [window, ] of gBuildWindows) { + let windowCache = gSingleWrapperCache.get(window); + if (windowCache) { + windowCache.delete(aWidgetId); + } + let widgetNode = window.document.getElementById(aWidgetId) || + window.gNavToolbox.palette.getElementsByAttribute("id", aWidgetId)[0]; + if (widgetNode) { + let container = widgetNode.parentNode + this.notifyListeners("onWidgetBeforeDOMChange", widgetNode, null, + container, true); + widgetNode.remove(); + this.notifyListeners("onWidgetAfterDOMChange", widgetNode, null, + container, true); + } + if (widget.type == "view") { + let viewNode = window.document.getElementById(widget.viewId); + if (viewNode) { + for (let eventName of kSubviewEvents) { + let handler = "on" + eventName; + if (typeof widget[handler] == "function") { + viewNode.removeEventListener(eventName, widget[handler], false); + } + } + } + } + if (widgetNode && widget.onDestroyed) { + widget.onDestroyed(window.document); + } + } + + gPalette.delete(aWidgetId); + gGroupWrapperCache.delete(aWidgetId); + + this.notifyListeners("onWidgetDestroyed", aWidgetId); + }, + + getCustomizeTargetForArea: function(aArea, aWindow) { + let buildAreaNodes = gBuildAreas.get(aArea); + if (!buildAreaNodes) { + return null; + } + + for (let node of buildAreaNodes) { + if (node.ownerGlobal == aWindow) { + return node.customizationTarget ? node.customizationTarget : node; + } + } + + return null; + }, + + reset: function() { + gResetting = true; + this._resetUIState(); + + // Rebuild each registered area (across windows) to reflect the state that + // was reset above. + this._rebuildRegisteredAreas(); + + for (let [widgetId, widget] of gPalette) { + if (widget.source == CustomizableUI.SOURCE_EXTERNAL) { + gSeenWidgets.add(widgetId); + } + } + if (gSeenWidgets.size) { + gDirty = true; + } + + gResetting = false; + }, + + _resetUIState: function() { + try { + gUIStateBeforeReset.drawInTitlebar = Services.prefs.getBoolPref(kPrefDrawInTitlebar); + gUIStateBeforeReset.uiCustomizationState = Services.prefs.getCharPref(kPrefCustomizationState); + gUIStateBeforeReset.currentTheme = LightweightThemeManager.currentTheme; + } catch (e) { } + + this._resetExtraToolbars(); + + Services.prefs.clearUserPref(kPrefCustomizationState); + Services.prefs.clearUserPref(kPrefDrawInTitlebar); + LightweightThemeManager.currentTheme = null; + log.debug("State reset"); + + // Reset placements to make restoring default placements possible. + gPlacements = new Map(); + gDirtyAreaCache = new Set(); + gSeenWidgets = new Set(); + // Clear the saved state to ensure that defaults will be used. + gSavedState = null; + // Restore the state for each area to its defaults + for (let [areaId, ] of gAreas) { + this.restoreStateForArea(areaId); + } + }, + + _resetExtraToolbars: function(aFilter = null) { + let firstWindow = true; // Only need to unregister and persist once + for (let [win, ] of gBuildWindows) { + let toolbox = win.gNavToolbox; + for (let child of toolbox.children) { + let matchesFilter = !aFilter || aFilter == child.id; + if (child.hasAttribute("customindex") && matchesFilter) { + let toolbarId = "toolbar" + child.getAttribute("customindex"); + toolbox.toolbarset.removeAttribute(toolbarId); + if (firstWindow) { + win.document.persist(toolbox.toolbarset.id, toolbarId); + // We have to unregister it properly to ensure we don't kill + // XUL widgets which might be in here + this.unregisterArea(child.id, true); + } + child.remove(); + } + } + firstWindow = false; + } + }, + + _rebuildRegisteredAreas: function() { + for (let [areaId, areaNodes] of gBuildAreas) { + let placements = gPlacements.get(areaId); + let isFirstChangedToolbar = true; + for (let areaNode of areaNodes) { + this.buildArea(areaId, placements, areaNode); + + let area = gAreas.get(areaId); + if (area.get("type") == CustomizableUI.TYPE_TOOLBAR) { + let defaultCollapsed = area.get("defaultCollapsed"); + let win = areaNode.ownerGlobal; + if (defaultCollapsed !== null) { + win.setToolbarVisibility(areaNode, !defaultCollapsed, isFirstChangedToolbar); + } + } + isFirstChangedToolbar = false; + } + } + }, + + /** + * Undoes a previous reset, restoring the state of the UI to the state prior to the reset. + */ + undoReset: function() { + if (gUIStateBeforeReset.uiCustomizationState == null || + gUIStateBeforeReset.drawInTitlebar == null) { + return; + } + gUndoResetting = true; + + let uiCustomizationState = gUIStateBeforeReset.uiCustomizationState; + let drawInTitlebar = gUIStateBeforeReset.drawInTitlebar; + let currentTheme = gUIStateBeforeReset.currentTheme; + + // Need to clear the previous state before setting the prefs + // because pref observers may check if there is a previous UI state. + this._clearPreviousUIState(); + + Services.prefs.setCharPref(kPrefCustomizationState, uiCustomizationState); + Services.prefs.setBoolPref(kPrefDrawInTitlebar, drawInTitlebar); + LightweightThemeManager.currentTheme = currentTheme; + this.loadSavedState(); + // If the user just customizes toolbar/titlebar visibility, gSavedState will be null + // and we don't need to do anything else here: + if (gSavedState) { + for (let areaId of Object.keys(gSavedState.placements)) { + let placements = gSavedState.placements[areaId]; + gPlacements.set(areaId, placements); + } + this._rebuildRegisteredAreas(); + } + + gUndoResetting = false; + }, + + _clearPreviousUIState: function() { + Object.getOwnPropertyNames(gUIStateBeforeReset).forEach((prop) => { + gUIStateBeforeReset[prop] = null; + }); + }, + + removeExtraToolbar: function(aToolbarId) { + this._resetExtraToolbars(aToolbarId); + }, + + /** + * @param {String|Node} aWidget - widget ID or a widget node (preferred for performance). + * @return {Boolean} whether the widget is removable + */ + isWidgetRemovable: function(aWidget) { + let widgetId; + let widgetNode; + if (typeof aWidget == "string") { + widgetId = aWidget; + } else { + widgetId = aWidget.id; + widgetNode = aWidget; + } + let provider = this.getWidgetProvider(widgetId); + + if (provider == CustomizableUI.PROVIDER_API) { + return gPalette.get(widgetId).removable; + } + + if (provider == CustomizableUI.PROVIDER_XUL) { + if (gBuildWindows.size == 0) { + // We don't have any build windows to look at, so just assume for now + // that its removable. + return true; + } + + if (!widgetNode) { + // Pick any of the build windows to look at. + let [window, ] = [...gBuildWindows][0]; + [, widgetNode] = this.getWidgetNode(widgetId, window); + } + // If we don't have a node, we assume it's removable. This can happen because + // getWidgetProvider returns PROVIDER_XUL by default, but this will also happen + // for API-provided widgets which have been destroyed. + if (!widgetNode) { + return true; + } + return widgetNode.getAttribute("removable") == "true"; + } + + // Otherwise this is either a special widget, which is always removable, or + // an API widget which has already been removed from gPalette. Returning true + // here allows us to then remove its ID from any placements where it might + // still occur. + return true; + }, + + canWidgetMoveToArea: function(aWidgetId, aArea) { + let placement = this.getPlacementOfWidget(aWidgetId); + if (placement && placement.area != aArea) { + // Special widgets can't move to the menu panel. + if (this.isSpecialWidget(aWidgetId) && gAreas.has(aArea) && + gAreas.get(aArea).get("type") == CustomizableUI.TYPE_MENU_PANEL) { + return false; + } + // For everything else, just return whether the widget is removable. + return this.isWidgetRemovable(aWidgetId); + } + + return true; + }, + + ensureWidgetPlacedInWindow: function(aWidgetId, aWindow) { + let placement = this.getPlacementOfWidget(aWidgetId); + if (!placement) { + return false; + } + let areaNodes = gBuildAreas.get(placement.area); + if (!areaNodes) { + return false; + } + let container = [...areaNodes].filter((n) => n.ownerGlobal == aWindow); + if (!container.length) { + return false; + } + let existingNode = container[0].getElementsByAttribute("id", aWidgetId)[0]; + if (existingNode) { + return true; + } + + this.insertNodeInWindow(aWidgetId, container[0], true); + return true; + }, + + get inDefaultState() { + for (let [areaId, props] of gAreas) { + let defaultPlacements = props.get("defaultPlacements"); + // Areas without default placements (like legacy ones?) get skipped + if (!defaultPlacements) { + continue; + } + + let currentPlacements = gPlacements.get(areaId); + // We're excluding all of the placement IDs for items that do not exist, + // and items that have removable="false", + // because we don't want to consider them when determining if we're + // in the default state. This way, if an add-on introduces a widget + // and is then uninstalled, the leftover placement doesn't cause us to + // automatically assume that the buttons are not in the default state. + let buildAreaNodes = gBuildAreas.get(areaId); + if (buildAreaNodes && buildAreaNodes.size) { + let container = [...buildAreaNodes][0]; + let removableOrDefault = (itemNodeOrItem) => { + let item = (itemNodeOrItem && itemNodeOrItem.id) || itemNodeOrItem; + let isRemovable = this.isWidgetRemovable(itemNodeOrItem); + let isInDefault = defaultPlacements.indexOf(item) != -1; + return isRemovable || isInDefault; + }; + // Toolbars have a currentSet property which also deals correctly with overflown + // widgets (if any) - use that instead: + if (props.get("type") == CustomizableUI.TYPE_TOOLBAR) { + let currentSet = container.currentSet; + currentPlacements = currentSet ? currentSet.split(',') : []; + currentPlacements = currentPlacements.filter(removableOrDefault); + } else { + // Clone the array so we don't modify the actual placements... + currentPlacements = [...currentPlacements]; + currentPlacements = currentPlacements.filter((item) => { + let itemNode = container.getElementsByAttribute("id", item)[0]; + return itemNode && removableOrDefault(itemNode || item); + }); + } + + if (props.get("type") == CustomizableUI.TYPE_TOOLBAR) { + let attribute = container.getAttribute("type") == "menubar" ? "autohide" : "collapsed"; + let collapsed = container.getAttribute(attribute) == "true"; + let defaultCollapsed = props.get("defaultCollapsed"); + if (defaultCollapsed !== null && collapsed != defaultCollapsed) { + log.debug("Found " + areaId + " had non-default toolbar visibility (expected " + defaultCollapsed + ", was " + collapsed + ")"); + return false; + } + } + } + log.debug("Checking default state for " + areaId + ":\n" + currentPlacements.join(",") + + "\nvs.\n" + defaultPlacements.join(",")); + + if (currentPlacements.length != defaultPlacements.length) { + return false; + } + + for (let i = 0; i < currentPlacements.length; ++i) { + if (currentPlacements[i] != defaultPlacements[i]) { + log.debug("Found " + currentPlacements[i] + " in " + areaId + " where " + + defaultPlacements[i] + " was expected!"); + return false; + } + } + } + + if (Services.prefs.prefHasUserValue(kPrefDrawInTitlebar)) { + log.debug(kPrefDrawInTitlebar + " pref is non-default"); + return false; + } + + if (LightweightThemeManager.currentTheme) { + log.debug(LightweightThemeManager.currentTheme + " theme is non-default"); + return false; + } + + return true; + }, + + setToolbarVisibility: function(aToolbarId, aIsVisible) { + // We only persist the attribute the first time. + let isFirstChangedToolbar = true; + for (let window of CustomizableUI.windows) { + let toolbar = window.document.getElementById(aToolbarId); + if (toolbar) { + window.setToolbarVisibility(toolbar, aIsVisible, isFirstChangedToolbar); + isFirstChangedToolbar = false; + } + } + }, +}; +Object.freeze(CustomizableUIInternal); + +this.CustomizableUI = { + /** + * Constant reference to the ID of the menu panel. + */ + AREA_PANEL: "PanelUI-contents", + /** + * Constant reference to the ID of the navigation toolbar. + */ + AREA_NAVBAR: "nav-bar", + /** + * Constant reference to the ID of the menubar's toolbar. + */ + AREA_MENUBAR: "toolbar-menubar", + /** + * Constant reference to the ID of the tabstrip toolbar. + */ + AREA_TABSTRIP: "TabsToolbar", + /** + * Constant reference to the ID of the bookmarks toolbar. + */ + AREA_BOOKMARKS: "PersonalToolbar", + /** + * Constant reference to the ID of the addon-bar toolbar shim. + * Do not use, this will be removed as soon as reasonably possible. + * @deprecated + */ + AREA_ADDONBAR: "addon-bar", + /** + * Constant indicating the area is a menu panel. + */ + TYPE_MENU_PANEL: "menu-panel", + /** + * Constant indicating the area is a toolbar. + */ + TYPE_TOOLBAR: "toolbar", + + /** + * Constant indicating a XUL-type provider. + */ + PROVIDER_XUL: "xul", + /** + * Constant indicating an API-type provider. + */ + PROVIDER_API: "api", + /** + * Constant indicating dynamic (special) widgets: spring, spacer, and separator. + */ + PROVIDER_SPECIAL: "special", + + /** + * Constant indicating the widget is built-in + */ + SOURCE_BUILTIN: "builtin", + /** + * Constant indicating the widget is externally provided + * (e.g. by add-ons or other items not part of the builtin widget set). + */ + SOURCE_EXTERNAL: "external", + + /** + * The class used to distinguish items that span the entire menu panel. + */ + WIDE_PANEL_CLASS: "panel-wide-item", + /** + * The (constant) number of columns in the menu panel. + */ + PANEL_COLUMN_COUNT: 3, + + /** + * Constant indicating the reason the event was fired was a window closing + */ + REASON_WINDOW_CLOSED: "window-closed", + /** + * Constant indicating the reason the event was fired was an area being + * unregistered separately from window closing mechanics. + */ + REASON_AREA_UNREGISTERED: "area-unregistered", + + + /** + * An iteratable property of windows managed by CustomizableUI. + * Note that this can *only* be used as an iterator. ie: + * for (let window of CustomizableUI.windows) { ... } + */ + windows: { + *[Symbol.iterator]() { + for (let [window, ] of gBuildWindows) + yield window; + } + }, + + /** + * Add a listener object that will get fired for various events regarding + * customization. + * + * @param aListener the listener object to add + * + * Not all event handler methods need to be defined. + * CustomizableUI will catch exceptions. Events are dispatched + * synchronously on the UI thread, so if you can delay any/some of your + * processing, that is advisable. The following event handlers are supported: + * - onWidgetAdded(aWidgetId, aArea, aPosition) + * Fired when a widget is added to an area. aWidgetId is the widget that + * was added, aArea the area it was added to, and aPosition the position + * in which it was added. + * - onWidgetMoved(aWidgetId, aArea, aOldPosition, aNewPosition) + * Fired when a widget is moved within its area. aWidgetId is the widget + * that was moved, aArea the area it was moved in, aOldPosition its old + * position, and aNewPosition its new position. + * - onWidgetRemoved(aWidgetId, aArea) + * Fired when a widget is removed from its area. aWidgetId is the widget + * that was removed, aArea the area it was removed from. + * + * - onWidgetBeforeDOMChange(aNode, aNextNode, aContainer, aIsRemoval) + * Fired *before* a widget's DOM node is acted upon by CustomizableUI + * (to add, move or remove it). aNode is the DOM node changed, aNextNode + * the DOM node (if any) before which a widget will be inserted, + * aContainer the *actual* DOM container (could be an overflow panel in + * case of an overflowable toolbar), and aWasRemoval is true iff the + * action about to happen is the removal of the DOM node. + * - onWidgetAfterDOMChange(aNode, aNextNode, aContainer, aWasRemoval) + * Like onWidgetBeforeDOMChange, but fired after the change to the DOM + * node of the widget. + * + * - onWidgetReset(aNode, aContainer) + * Fired after a reset to default placements moves a widget's node to a + * different location. aNode is the widget's node, aContainer is the + * area it was moved into (NB: it might already have been there and been + * moved to a different position!) + * - onWidgetUndoMove(aNode, aContainer) + * Fired after undoing a reset to default placements moves a widget's + * node to a different location. aNode is the widget's node, aContainer + * is the area it was moved into (NB: it might already have been there + * and been moved to a different position!) + * - onAreaReset(aArea, aContainer) + * Fired after a reset to default placements is complete on an area's + * DOM node. Note that this is fired for each DOM node. aArea is the area + * that was reset, aContainer the DOM node that was reset. + * + * - onWidgetCreated(aWidgetId) + * Fired when a widget with id aWidgetId has been created, but before it + * is added to any placements or any DOM nodes have been constructed. + * Only fired for API-based widgets. + * - onWidgetAfterCreation(aWidgetId, aArea) + * Fired after a widget with id aWidgetId has been created, and has been + * added to either its default area or the area in which it was placed + * previously. If the widget has no default area and/or it has never + * been placed anywhere, aArea may be null. Only fired for API-based + * widgets. + * - onWidgetDestroyed(aWidgetId) + * Fired when widgets are destroyed. aWidgetId is the widget that is + * being destroyed. Only fired for API-based widgets. + * - onWidgetInstanceRemoved(aWidgetId, aDocument) + * Fired when a window is unloaded and a widget's instance is destroyed + * because of this. Only fired for API-based widgets. + * + * - onWidgetDrag(aWidgetId, aArea) + * Fired both when and after customize mode drag handling system tries + * to determine the width and height of widget aWidgetId when dragged to a + * different area. aArea will be the area the item is dragged to, or + * undefined after the measurements have been done and the node has been + * moved back to its 'regular' area. + * + * - onCustomizeStart(aWindow) + * Fired when opening customize mode in aWindow. + * - onCustomizeEnd(aWindow) + * Fired when exiting customize mode in aWindow. + * + * - onWidgetOverflow(aNode, aContainer) + * Fired when a widget's DOM node is overflowing its container, a toolbar, + * and will be displayed in the overflow panel. + * - onWidgetUnderflow(aNode, aContainer) + * Fired when a widget's DOM node is *not* overflowing its container, a + * toolbar, anymore. + * - onWindowOpened(aWindow) + * Fired when a window has been opened that is managed by CustomizableUI, + * once all of the prerequisite setup has been done. + * - onWindowClosed(aWindow) + * Fired when a window that has been managed by CustomizableUI has been + * closed. + * - onAreaNodeRegistered(aArea, aContainer) + * Fired after an area node is first built when it is registered. This + * is often when the window has opened, but in the case of add-ons, + * could fire when the node has just been registered with CustomizableUI + * after an add-on update or disable/enable sequence. + * - onAreaNodeUnregistered(aArea, aContainer, aReason) + * Fired when an area node is explicitly unregistered by an API caller, + * or by a window closing. The aReason parameter indicates which of + * these is the case. + */ + addListener: function(aListener) { + CustomizableUIInternal.addListener(aListener); + }, + /** + * Remove a listener added with addListener + * @param aListener the listener object to remove + */ + removeListener: function(aListener) { + CustomizableUIInternal.removeListener(aListener); + }, + + /** + * Register a customizable area with CustomizableUI. + * @param aName the name of the area to register. Can only contain + * alphanumeric characters, dashes (-) and underscores (_). + * @param aProps the properties of the area. The following properties are + * recognized: + * - type: the type of area. Either TYPE_TOOLBAR (default) or + * TYPE_MENU_PANEL; + * - anchor: for a menu panel or overflowable toolbar, the + * anchoring node for the panel. + * - legacy: set to true if you want customizableui to + * automatically migrate the currentset attribute + * - overflowable: set to true if your toolbar is overflowable. + * This requires an anchor, and only has an + * effect for toolbars. + * - defaultPlacements: an array of widget IDs making up the + * default contents of the area + * - defaultCollapsed: (INTERNAL ONLY) applies if the type is TYPE_TOOLBAR, specifies + * if toolbar is collapsed by default (default to true). + * Specify null to ensure that reset/inDefaultArea don't care + * about a toolbar's collapsed state + */ + registerArea: function(aName, aProperties) { + CustomizableUIInternal.registerArea(aName, aProperties); + }, + /** + * Register a concrete node for a registered area. This method is automatically + * called from any toolbar in the main browser window that has its + * "customizable" attribute set to true. There should normally be no need to + * call it yourself. + * + * Note that ideally, you should register your toolbar using registerArea + * before any of the toolbars have their XBL bindings constructed (which + * will happen when they're added to the DOM and are not hidden). If you + * don't, and your toolbar has a defaultset attribute, CustomizableUI will + * register it automatically. If your toolbar does not have a defaultset + * attribute, the node will be saved for processing when you call + * registerArea. Note that CustomizableUI won't restore state in the area, + * allow the user to customize it in customize mode, or otherwise deal + * with it, until the area has been registered. + */ + registerToolbarNode: function(aToolbar, aExistingChildren) { + CustomizableUIInternal.registerToolbarNode(aToolbar, aExistingChildren); + }, + /** + * Register the menu panel node. This method should not be called by anyone + * apart from the built-in PanelUI. + * @param aPanel the panel DOM node being registered. + */ + registerMenuPanel: function(aPanel) { + CustomizableUIInternal.registerMenuPanel(aPanel); + }, + /** + * Unregister a customizable area. The inverse of registerArea. + * + * Unregistering an area will remove all the (removable) widgets in the + * area, which will return to the panel, and destroy all other traces + * of the area within CustomizableUI. Note that this means the *contents* + * of the area's DOM nodes will be moved to the panel or removed, but + * the area's DOM nodes *themselves* will stay. + * + * Furthermore, by default the placements of the area will be kept in the + * saved state (!) and restored if you re-register the area at a later + * point. This is useful for e.g. add-ons that get disabled and then + * re-enabled (e.g. when they update). + * + * You can override this last behaviour (and destroy the placements + * information in the saved state) by passing true for aDestroyPlacements. + * + * @param aName the name of the area to unregister + * @param aDestroyPlacements whether to destroy the placements information + * for the area, too. + */ + unregisterArea: function(aName, aDestroyPlacements) { + CustomizableUIInternal.unregisterArea(aName, aDestroyPlacements); + }, + /** + * Add a widget to an area. + * If the area to which you try to add is not known to CustomizableUI, + * this will throw. + * If the area to which you try to add has not yet been restored from its + * legacy state, this will postpone the addition. + * If the area to which you try to add is the same as the area in which + * the widget is currently placed, this will do the same as + * moveWidgetWithinArea. + * If the widget cannot be removed from its original location, this will + * no-op. + * + * This will fire an onWidgetAdded notification, + * and an onWidgetBeforeDOMChange and onWidgetAfterDOMChange notification + * for each window CustomizableUI knows about. + * + * @param aWidgetId the ID of the widget to add + * @param aArea the ID of the area to add the widget to + * @param aPosition the position at which to add the widget. If you do not + * pass a position, the widget will be added to the end + * of the area. + */ + addWidgetToArea: function(aWidgetId, aArea, aPosition) { + CustomizableUIInternal.addWidgetToArea(aWidgetId, aArea, aPosition); + }, + /** + * Remove a widget from its area. If the widget cannot be removed from its + * area, or is not in any area, this will no-op. Otherwise, this will fire an + * onWidgetRemoved notification, and an onWidgetBeforeDOMChange and + * onWidgetAfterDOMChange notification for each window CustomizableUI knows + * about. + * + * @param aWidgetId the ID of the widget to remove + */ + removeWidgetFromArea: function(aWidgetId) { + CustomizableUIInternal.removeWidgetFromArea(aWidgetId); + }, + /** + * Move a widget within an area. + * If the widget is not in any area, this will no-op. + * If the widget is already at the indicated position, this will no-op. + * + * Otherwise, this will move the widget and fire an onWidgetMoved notification, + * and an onWidgetBeforeDOMChange and onWidgetAfterDOMChange notification for + * each window CustomizableUI knows about. + * + * @param aWidgetId the ID of the widget to move + * @param aPosition the position to move the widget to. + * Negative values or values greater than the number of + * widgets will be interpreted to mean moving the widget to + * respectively the first or last position. + */ + moveWidgetWithinArea: function(aWidgetId, aPosition) { + CustomizableUIInternal.moveWidgetWithinArea(aWidgetId, aPosition); + }, + /** + * Ensure a XUL-based widget created in a window after areas were + * initialized moves to its correct position. + * This is roughly equivalent to manually looking up the position and using + * insertItem in the old API, but a lot less work for consumers. + * Always prefer this over using toolbar.insertItem (which might no-op + * because it delegates to addWidgetToArea) or, worse, moving items in the + * DOM yourself. + * + * @param aWidgetId the ID of the widget that was just created + * @param aWindow the window in which you want to ensure it was added. + * + * NB: why is this API per-window, you wonder? Because if you need this, + * presumably you yourself need to create the widget in all the windows + * and need to loop through them anyway. + */ + ensureWidgetPlacedInWindow: function(aWidgetId, aWindow) { + return CustomizableUIInternal.ensureWidgetPlacedInWindow(aWidgetId, aWindow); + }, + /** + * Start a batch update of items. + * During a batch update, the customization state is not saved to the user's + * preferences file, in order to reduce (possibly sync) IO. + * Calls to begin/endBatchUpdate may be nested. + * + * Callers should ensure that NO MATTER WHAT they call endBatchUpdate once + * for each call to beginBatchUpdate, even if there are exceptions in the + * code in the batch update. Otherwise, for the duration of the + * Firefox session, customization state is never saved. Typically, you + * would do this using a try...finally block. + */ + beginBatchUpdate: function() { + CustomizableUIInternal.beginBatchUpdate(); + }, + /** + * End a batch update. See the documentation for beginBatchUpdate above. + * + * State is not saved if we believe it is identical to the last known + * saved state. State is only ever saved when all batch updates have + * finished (ie there has been 1 endBatchUpdate call for each + * beginBatchUpdate call). If any of the endBatchUpdate calls pass + * aForceDirty=true, we will flush to the prefs file. + * + * @param aForceDirty force CustomizableUI to flush to the prefs file when + * all batch updates have finished. + */ + endBatchUpdate: function(aForceDirty) { + CustomizableUIInternal.endBatchUpdate(aForceDirty); + }, + /** + * Create a widget. + * + * To create a widget, you should pass an object with its desired + * properties. The following properties are supported: + * + * - id: the ID of the widget (required). + * - type: a string indicating the type of widget. Possible types + * are: + * 'button' - for simple button widgets (the default) + * 'view' - for buttons that open a panel or subview, + * depending on where they are placed. + * 'custom' - for fine-grained control over the creation + * of the widget. + * - viewId: Only useful for views (and required there): the id of the + * <panelview> that should be shown when clicking the widget. + * - onBuild(aDoc): Only useful for custom widgets (and required there); a + * function that will be invoked with the document in which + * to build a widget. Should return the DOM node that has + * been constructed. + * - onBeforeCreated(aDoc): Attached to all non-custom widgets; a function + * that will be invoked before the widget gets a DOM node + * constructed, passing the document in which that will happen. + * This is useful especially for 'view' type widgets that need + * to construct their views on the fly (e.g. from bootstrapped + * add-ons) + * - onCreated(aNode): Attached to all widgets; a function that will be invoked + * whenever the widget has a DOM node constructed, passing the + * constructed node as an argument. + * - onDestroyed(aDoc): Attached to all non-custom widgets; a function that + * will be invoked after the widget has a DOM node destroyed, + * passing the document from which it was removed. This is + * useful especially for 'view' type widgets that need to + * cleanup after views that were constructed on the fly. + * - onCommand(aEvt): Only useful for button widgets; a function that will be + * invoked when the user activates the button. + * - onClick(aEvt): Attached to all widgets; a function that will be invoked + * when the user clicks the widget. + * - onViewShowing(aEvt): Only useful for views; a function that will be + * invoked when a user shows your view. If any event + * handler calls aEvt.preventDefault(), the view will + * not be shown. + * + * The event's `detail` property is an object with an + * `addBlocker` method. Handlers which need to + * perform asynchronous operations before the view is + * shown may pass this method a Promise, which will + * prevent the view from showing until it resolves. + * Additionally, if the promise resolves to the exact + * value `false`, the view will not be shown. + * - onViewHiding(aEvt): Only useful for views; a function that will be + * invoked when a user hides your view. + * - tooltiptext: string to use for the tooltip of the widget + * - label: string to use for the label of the widget + * - removable: whether the widget is removable (optional, default: true) + * NB: if you specify false here, you must provide a + * defaultArea, too. + * - overflows: whether widget can overflow when in an overflowable + * toolbar (optional, default: true) + * - defaultArea: default area to add the widget to + * (optional, default: none; required if non-removable) + * - shortcutId: id of an element that has a shortcut for this widget + * (optional, default: null). This is only used to display + * the shortcut as part of the tooltip for builtin widgets + * (which have strings inside + * customizableWidgets.properties). If you're in an add-on, + * you should not set this property. + * - showInPrivateBrowsing: whether to show the widget in private browsing + * mode (optional, default: true) + * + * @param aProperties the specifications for the widget. + * @return a wrapper around the created widget (see getWidget) + */ + createWidget: function(aProperties) { + return CustomizableUIInternal.wrapWidget( + CustomizableUIInternal.createWidget(aProperties) + ); + }, + /** + * Destroy a widget + * + * If the widget is part of the default placements in an area, this will + * remove it from there. It will also remove any DOM instances. However, + * it will keep the widget in the placements for whatever area it was + * in at the time. You can remove it from there yourself by calling + * CustomizableUI.removeWidgetFromArea(aWidgetId). + * + * @param aWidgetId the ID of the widget to destroy + */ + destroyWidget: function(aWidgetId) { + CustomizableUIInternal.destroyWidget(aWidgetId); + }, + /** + * Get a wrapper object with information about the widget. + * The object provides the following properties + * (all read-only unless otherwise indicated): + * + * - id: the widget's ID; + * - type: the type of widget (button, view, custom). For + * XUL-provided widgets, this is always 'custom'; + * - provider: the provider type of the widget, id est one of + * PROVIDER_API or PROVIDER_XUL; + * - forWindow(w): a method to obtain a single window wrapper for a widget, + * in the window w passed as the only argument; + * - instances: an array of all instances (single window wrappers) + * of the widget. This array is NOT live; + * - areaType: the type of the widget's current area + * - isGroup: true; will be false for wrappers around single widget nodes; + * - source: for API-provided widgets, whether they are built-in to + * Firefox or add-on-provided; + * - disabled: for API-provided widgets, whether the widget is currently + * disabled. NB: this property is writable, and will toggle + * all the widgets' nodes' disabled states; + * - label: for API-provied widgets, the label of the widget; + * - tooltiptext: for API-provided widgets, the tooltip of the widget; + * - showInPrivateBrowsing: for API-provided widgets, whether the widget is + * visible in private browsing; + * + * Single window wrappers obtained through forWindow(someWindow) or from the + * instances array have the following properties + * (all read-only unless otherwise indicated): + * + * - id: the widget's ID; + * - type: the type of widget (button, view, custom). For + * XUL-provided widgets, this is always 'custom'; + * - provider: the provider type of the widget, id est one of + * PROVIDER_API or PROVIDER_XUL; + * - node: reference to the corresponding DOM node; + * - anchor: the anchor on which to anchor panels opened from this + * node. This will point to the overflow chevron on + * overflowable toolbars if and only if your widget node + * is overflowed, to the anchor for the panel menu + * if your widget is inside the panel menu, and to the + * node itself in all other cases; + * - overflowed: boolean indicating whether the node is currently in the + * overflow panel of the toolbar; + * - isGroup: false; will be true for the group widget; + * - label: for API-provided widgets, convenience getter for the + * label attribute of the DOM node; + * - tooltiptext: for API-provided widgets, convenience getter for the + * tooltiptext attribute of the DOM node; + * - disabled: for API-provided widgets, convenience getter *and setter* + * for the disabled state of this single widget. Note that + * you may prefer to use the group wrapper's getter/setter + * instead. + * + * @param aWidgetId the ID of the widget whose information you need + * @return a wrapper around the widget as described above, or null if the + * widget is known not to exist (anymore). NB: non-null return + * is no guarantee the widget exists because we cannot know in + * advance if a XUL widget exists or not. + */ + getWidget: function(aWidgetId) { + return CustomizableUIInternal.wrapWidget(aWidgetId); + }, + /** + * Get an array of widget wrappers (see getWidget) for all the widgets + * which are currently not in any area (so which are in the palette). + * + * @param aWindowPalette the palette (and by extension, the window) in which + * CustomizableUI should look. This matters because of + * course XUL-provided widgets could be available in + * some windows but not others, and likewise + * API-provided widgets might not exist in a private + * window (because of the showInPrivateBrowsing + * property). + * + * @return an array of widget wrappers (see getWidget) + */ + getUnusedWidgets: function(aWindowPalette) { + return CustomizableUIInternal.getUnusedWidgets(aWindowPalette).map( + CustomizableUIInternal.wrapWidget, + CustomizableUIInternal + ); + }, + /** + * Get an array of all the widget IDs placed in an area. This is roughly + * equivalent to fetching the currentset attribute and splitting by commas + * in the legacy APIs. Modifying the array will not affect CustomizableUI. + * + * @param aArea the ID of the area whose placements you want to obtain. + * @return an array containing the widget IDs that are in the area. + * + * NB: will throw if called too early (before placements have been fetched) + * or if the area is not currently known to CustomizableUI. + */ + getWidgetIdsInArea: function(aArea) { + if (!gAreas.has(aArea)) { + throw new Error("Unknown customization area: " + aArea); + } + if (!gPlacements.has(aArea)) { + throw new Error("Area not yet restored"); + } + + // We need to clone this, as we don't want to let consumers muck with placements + return [...gPlacements.get(aArea)]; + }, + /** + * Get an array of widget wrappers for all the widgets in an area. This is + * the same as calling getWidgetIdsInArea and .map() ing the result through + * CustomizableUI.getWidget. Careful: this means that if there are IDs in there + * which don't have corresponding DOM nodes (like in the old-style currentset + * attribute), there might be nulls in this array, or items for which + * wrapper.forWindow(win) will return null. + * + * @param aArea the ID of the area whose widgets you want to obtain. + * @return an array of widget wrappers and/or null values for the widget IDs + * placed in an area. + * + * NB: will throw if called too early (before placements have been fetched) + * or if the area is not currently known to CustomizableUI. + */ + getWidgetsInArea: function(aArea) { + return this.getWidgetIdsInArea(aArea).map( + CustomizableUIInternal.wrapWidget, + CustomizableUIInternal + ); + }, + /** + * Obtain an array of all the area IDs known to CustomizableUI. + * This array is created for you, so is modifiable without CustomizableUI + * being affected. + */ + get areas() { + return [...gAreas.keys()]; + }, + /** + * Check what kind of area (toolbar or menu panel) an area is. This is + * useful if you have a widget that needs to behave differently depending + * on its location. Note that widget wrappers have a convenience getter + * property (areaType) for this purpose. + * + * @param aArea the ID of the area whose type you want to know + * @return TYPE_TOOLBAR or TYPE_MENU_PANEL depending on the area, null if + * the area is unknown. + */ + getAreaType: function(aArea) { + let area = gAreas.get(aArea); + return area ? area.get("type") : null; + }, + /** + * Check if a toolbar is collapsed by default. + * + * @param aArea the ID of the area whose default-collapsed state you want to know. + * @return `true` or `false` depending on the area, null if the area is unknown, + * or its collapsed state cannot normally be controlled by the user + */ + isToolbarDefaultCollapsed: function(aArea) { + let area = gAreas.get(aArea); + return area ? area.get("defaultCollapsed") : null; + }, + /** + * Obtain the DOM node that is the customize target for an area in a + * specific window. + * + * Areas can have a customization target that does not correspond to the + * node itself. In particular, toolbars that have a customizationtarget + * attribute set will have their customization target set to that node. + * This means widgets will end up in the customization target, not in the + * DOM node with the ID that corresponds to the area ID. This is useful + * because it lets you have fixed content in a toolbar (e.g. the panel + * menu item in the navbar) and have all the customizable widgets use + * the customization target. + * + * Using this API yourself is discouraged; you should generally not need + * to be asking for the DOM container node used for a particular area. + * In particular, if you're wanting to check it in relation to a widget's + * node, your DOM node might not be a direct child of the customize target + * in a window if, for instance, the window is in customization mode, or if + * this is an overflowable toolbar and the widget has been overflowed. + * + * @param aArea the ID of the area whose customize target you want to have + * @param aWindow the window where you want to fetch the DOM node. + * @return the customize target DOM node for aArea in aWindow + */ + getCustomizeTargetForArea: function(aArea, aWindow) { + return CustomizableUIInternal.getCustomizeTargetForArea(aArea, aWindow); + }, + /** + * Reset the customization state back to its default. + * + * This is the nuclear option. You should never call this except if the user + * explicitly requests it. Firefox does this when the user clicks the + * "Restore Defaults" button in customize mode. + */ + reset: function() { + CustomizableUIInternal.reset(); + }, + + /** + * Undo the previous reset, can only be called immediately after a reset. + * @return a promise that will be resolved when the operation is complete. + */ + undoReset: function() { + CustomizableUIInternal.undoReset(); + }, + + /** + * Remove a custom toolbar added in a previous version of Firefox or using + * an add-on. NB: only works on the customizable toolbars generated by + * the toolbox itself. Intended for use from CustomizeMode, not by + * other consumers. + * @param aToolbarId the ID of the toolbar to remove + */ + removeExtraToolbar: function(aToolbarId) { + CustomizableUIInternal.removeExtraToolbar(aToolbarId); + }, + + /** + * Can the last Restore Defaults operation be undone. + * + * @return A boolean stating whether an undo of the + * Restore Defaults can be performed. + */ + get canUndoReset() { + return gUIStateBeforeReset.uiCustomizationState != null || + gUIStateBeforeReset.drawInTitlebar != null || + gUIStateBeforeReset.currentTheme != null; + }, + + /** + * Get the placement of a widget. This is by far the best way to obtain + * information about what the state of your widget is. The internals of + * this call are cheap (no DOM necessary) and you will know where the user + * has put your widget. + * + * @param aWidgetId the ID of the widget whose placement you want to know + * @return + * { + * area: "somearea", // The ID of the area where the widget is placed + * position: 42 // the index in the placements array corresponding to + * // your widget. + * } + * + * OR + * + * null // if the widget is not placed anywhere (ie in the palette) + */ + getPlacementOfWidget: function(aWidgetId, aOnlyRegistered=true, aDeadAreas=false) { + return CustomizableUIInternal.getPlacementOfWidget(aWidgetId, aOnlyRegistered, aDeadAreas); + }, + /** + * Check if a widget can be removed from the area it's in. + * + * Note that if you're wanting to move the widget somewhere, you should + * generally be checking canWidgetMoveToArea, because that will return + * true if the widget is already in the area where you want to move it (!). + * + * NB: oh, also, this method might lie if the widget in question is a + * XUL-provided widget and there are no windows open, because it + * can obviously not check anything in this case. It will return + * true. You will be able to move the widget elsewhere. However, + * once the user reopens a window, the widget will move back to its + * 'proper' area automagically. + * + * @param aWidgetId a widget ID or DOM node to check + * @return true if the widget can be removed from its area, + * false otherwise. + */ + isWidgetRemovable: function(aWidgetId) { + return CustomizableUIInternal.isWidgetRemovable(aWidgetId); + }, + /** + * Check if a widget can be moved to a particular area. Like + * isWidgetRemovable but better, because it'll return true if the widget + * is already in the right area. + * + * @param aWidgetId the widget ID or DOM node you want to move somewhere + * @param aArea the area ID you want to move it to. + * @return true if this is possible, false if it is not. The same caveats as + * for isWidgetRemovable apply, however, if no windows are open. + */ + canWidgetMoveToArea: function(aWidgetId, aArea) { + return CustomizableUIInternal.canWidgetMoveToArea(aWidgetId, aArea); + }, + /** + * Whether we're in a default state. Note that non-removable non-default + * widgets and non-existing widgets are not taken into account in determining + * whether we're in the default state. + * + * NB: this is a property with a getter. The getter is NOT cheap, because + * it does smart things with non-removable non-default items, non-existent + * items, and so forth. Please don't call unless necessary. + */ + get inDefaultState() { + return CustomizableUIInternal.inDefaultState; + }, + + /** + * Set a toolbar's visibility state in all windows. + * @param aToolbarId the toolbar whose visibility should be adjusted + * @param aIsVisible whether the toolbar should be visible + */ + setToolbarVisibility: function(aToolbarId, aIsVisible) { + CustomizableUIInternal.setToolbarVisibility(aToolbarId, aIsVisible); + }, + + /** + * Get a localized property off a (widget?) object. + * + * NB: this is unlikely to be useful unless you're in Firefox code, because + * this code uses the builtin widget stringbundle, and can't be told + * to use add-on-provided strings. It's mainly here as convenience for + * custom builtin widgets that build their own DOM but use the same + * stringbundle as the other builtin widgets. + * + * @param aWidget the object whose property we should use to fetch a + * localizable string; + * @param aProp the property on the object to use for the fetching; + * @param aFormatArgs (optional) any extra arguments to use for a formatted + * string; + * @param aDef (optional) the default to return if we don't find the + * string in the stringbundle; + * + * @return the localized string, or aDef if the string isn't in the bundle. + * If no default is provided, + * if aProp exists on aWidget, we'll return that, + * otherwise we'll return the empty string + * + */ + getLocalizedProperty: function(aWidget, aProp, aFormatArgs, aDef) { + return CustomizableUIInternal.getLocalizedProperty(aWidget, aProp, + aFormatArgs, aDef); + }, + /** + * Utility function to detect, find and set a keyboard shortcut for a menuitem + * or (toolbar)button. + * + * @param aShortcutNode the XUL node where the shortcut will be derived from; + * @param aTargetNode (optional) the XUL node on which the `shortcut` + * attribute will be set. If NULL, the shortcut will be + * set on aShortcutNode; + */ + addShortcut: function(aShortcutNode, aTargetNode) { + return CustomizableUIInternal.addShortcut(aShortcutNode, aTargetNode); + }, + /** + * Given a node, walk up to the first panel in its ancestor chain, and + * close it. + * + * @param aNode a node whose panel should be closed; + */ + hidePanelForNode: function(aNode) { + CustomizableUIInternal.hidePanelForNode(aNode); + }, + /** + * Check if a widget is a "special" widget: a spring, spacer or separator. + * + * @param aWidgetId the widget ID to check. + * @return true if the widget is 'special', false otherwise. + */ + isSpecialWidget: function(aWidgetId) { + return CustomizableUIInternal.isSpecialWidget(aWidgetId); + }, + /** + * Add listeners to a panel that will close it. For use from the menu panel + * and overflowable toolbar implementations, unlikely to be useful for + * consumers. + * + * @param aPanel the panel to which listeners should be attached. + */ + addPanelCloseListeners: function(aPanel) { + CustomizableUIInternal.addPanelCloseListeners(aPanel); + }, + /** + * Remove close listeners that have been added to a panel with + * addPanelCloseListeners. For use from the menu panel and overflowable + * toolbar implementations, unlikely to be useful for consumers. + * + * @param aPanel the panel from which listeners should be removed. + */ + removePanelCloseListeners: function(aPanel) { + CustomizableUIInternal.removePanelCloseListeners(aPanel); + }, + /** + * Notify listeners a widget is about to be dragged to an area. For use from + * Customize Mode only, do not use otherwise. + * + * @param aWidgetId the ID of the widget that is being dragged to an area. + * @param aArea the ID of the area to which the widget is being dragged. + */ + onWidgetDrag: function(aWidgetId, aArea) { + CustomizableUIInternal.notifyListeners("onWidgetDrag", aWidgetId, aArea); + }, + /** + * Notify listeners that a window is entering customize mode. For use from + * Customize Mode only, do not use otherwise. + * @param aWindow the window entering customize mode + */ + notifyStartCustomizing: function(aWindow) { + CustomizableUIInternal.notifyListeners("onCustomizeStart", aWindow); + }, + /** + * Notify listeners that a window is exiting customize mode. For use from + * Customize Mode only, do not use otherwise. + * @param aWindow the window exiting customize mode + */ + notifyEndCustomizing: function(aWindow) { + CustomizableUIInternal.notifyListeners("onCustomizeEnd", aWindow); + }, + + /** + * Notify toolbox(es) of a particular event. If you don't pass aWindow, + * all toolboxes will be notified. For use from Customize Mode only, + * do not use otherwise. + * @param aEvent the name of the event to send. + * @param aDetails optional, the details of the event. + * @param aWindow optional, the window in which to send the event. + */ + dispatchToolboxEvent: function(aEvent, aDetails={}, aWindow=null) { + CustomizableUIInternal.dispatchToolboxEvent(aEvent, aDetails, aWindow); + }, + + /** + * Check whether an area is overflowable. + * + * @param aAreaId the ID of an area to check for overflowable-ness + * @return true if the area is overflowable, false otherwise. + */ + isAreaOverflowable: function(aAreaId) { + let area = gAreas.get(aAreaId); + return area ? area.get("type") == this.TYPE_TOOLBAR && area.get("overflowable") + : false; + }, + /** + * Obtain a string indicating the place of an element. This is intended + * for use from customize mode; You should generally use getPlacementOfWidget + * instead, which is cheaper because it does not use the DOM. + * + * @param aElement the DOM node whose place we need to check + * @return "toolbar" if the node is in a toolbar, "panel" if it is in the + * menu panel, "palette" if it is in the (visible!) customization + * palette, undefined otherwise. + */ + getPlaceForItem: function(aElement) { + let place; + let node = aElement; + while (node && !place) { + if (node.localName == "toolbar") + place = "toolbar"; + else if (node.id == CustomizableUI.AREA_PANEL) + place = "panel"; + else if (node.id == "customization-palette") + place = "palette"; + + node = node.parentNode; + } + return place; + }, + + /** + * Check if a toolbar is builtin or not. + * @param aToolbarId the ID of the toolbar you want to check + */ + isBuiltinToolbar: function(aToolbarId) { + return CustomizableUIInternal._builtinToolbars.has(aToolbarId); + }, +}; +Object.freeze(this.CustomizableUI); +Object.freeze(this.CustomizableUI.windows); + +/** + * All external consumers of widgets are really interacting with these wrappers + * which provide a common interface. + */ + +/** + * WidgetGroupWrapper is the common interface for interacting with an entire + * widget group - AKA, all instances of a widget across a series of windows. + * This particular wrapper is only used for widgets created via the provider + * API. + */ +function WidgetGroupWrapper(aWidget) { + this.isGroup = true; + + const kBareProps = ["id", "source", "type", "disabled", "label", "tooltiptext", + "showInPrivateBrowsing", "viewId"]; + for (let prop of kBareProps) { + let propertyName = prop; + this.__defineGetter__(propertyName, () => aWidget[propertyName]); + } + + this.__defineGetter__("provider", () => CustomizableUI.PROVIDER_API); + + this.__defineSetter__("disabled", function(aValue) { + aValue = !!aValue; + aWidget.disabled = aValue; + for (let [, instance] of aWidget.instances) { + instance.disabled = aValue; + } + }); + + this.forWindow = function WidgetGroupWrapper_forWindow(aWindow) { + let wrapperMap; + if (!gSingleWrapperCache.has(aWindow)) { + wrapperMap = new Map(); + gSingleWrapperCache.set(aWindow, wrapperMap); + } else { + wrapperMap = gSingleWrapperCache.get(aWindow); + } + if (wrapperMap.has(aWidget.id)) { + return wrapperMap.get(aWidget.id); + } + + let instance = aWidget.instances.get(aWindow.document); + if (!instance && + (aWidget.showInPrivateBrowsing || !PrivateBrowsingUtils.isWindowPrivate(aWindow))) { + instance = CustomizableUIInternal.buildWidget(aWindow.document, + aWidget); + } + + let wrapper = new WidgetSingleWrapper(aWidget, instance); + wrapperMap.set(aWidget.id, wrapper); + return wrapper; + }; + + this.__defineGetter__("instances", function() { + // Can't use gBuildWindows here because some areas load lazily: + let placement = CustomizableUIInternal.getPlacementOfWidget(aWidget.id); + if (!placement) { + return []; + } + let area = placement.area; + let buildAreas = gBuildAreas.get(area); + if (!buildAreas) { + return []; + } + return Array.from(buildAreas, (node) => this.forWindow(node.ownerGlobal)); + }); + + this.__defineGetter__("areaType", function() { + let areaProps = gAreas.get(aWidget.currentArea); + return areaProps && areaProps.get("type"); + }); + + Object.freeze(this); +} + +/** + * A WidgetSingleWrapper is a wrapper around a single instance of a widget in + * a particular window. + */ +function WidgetSingleWrapper(aWidget, aNode) { + this.isGroup = false; + + this.node = aNode; + this.provider = CustomizableUI.PROVIDER_API; + + const kGlobalProps = ["id", "type"]; + for (let prop of kGlobalProps) { + this[prop] = aWidget[prop]; + } + + const kNodeProps = ["label", "tooltiptext"]; + for (let prop of kNodeProps) { + let propertyName = prop; + // Look at the node for these, instead of the widget data, to ensure the + // wrapper always reflects this live instance. + this.__defineGetter__(propertyName, + () => aNode.getAttribute(propertyName)); + } + + this.__defineGetter__("disabled", () => aNode.disabled); + this.__defineSetter__("disabled", function(aValue) { + aNode.disabled = !!aValue; + }); + + this.__defineGetter__("anchor", function() { + let anchorId; + // First check for an anchor for the area: + let placement = CustomizableUIInternal.getPlacementOfWidget(aWidget.id); + if (placement) { + anchorId = gAreas.get(placement.area).get("anchor"); + } + if (!anchorId) { + anchorId = aNode.getAttribute("cui-anchorid"); + } + + return anchorId ? aNode.ownerDocument.getElementById(anchorId) + : aNode; + }); + + this.__defineGetter__("overflowed", function() { + return aNode.getAttribute("overflowedItem") == "true"; + }); + + Object.freeze(this); +} + +/** + * XULWidgetGroupWrapper is the common interface for interacting with an entire + * widget group - AKA, all instances of a widget across a series of windows. + * This particular wrapper is only used for widgets created via the old-school + * XUL method (overlays, or programmatically injecting toolbaritems, or other + * such things). + */ +// XXXunf Going to need to hook this up to some events to keep it all live. +function XULWidgetGroupWrapper(aWidgetId) { + this.isGroup = true; + this.id = aWidgetId; + this.type = "custom"; + this.provider = CustomizableUI.PROVIDER_XUL; + + this.forWindow = function XULWidgetGroupWrapper_forWindow(aWindow) { + let wrapperMap; + if (!gSingleWrapperCache.has(aWindow)) { + wrapperMap = new Map(); + gSingleWrapperCache.set(aWindow, wrapperMap); + } else { + wrapperMap = gSingleWrapperCache.get(aWindow); + } + if (wrapperMap.has(aWidgetId)) { + return wrapperMap.get(aWidgetId); + } + + let instance = aWindow.document.getElementById(aWidgetId); + if (!instance) { + // Toolbar palettes aren't part of the document, so elements in there + // won't be found via document.getElementById(). + instance = aWindow.gNavToolbox.palette.getElementsByAttribute("id", aWidgetId)[0]; + } + + let wrapper = new XULWidgetSingleWrapper(aWidgetId, instance, aWindow.document); + wrapperMap.set(aWidgetId, wrapper); + return wrapper; + }; + + this.__defineGetter__("areaType", function() { + let placement = CustomizableUIInternal.getPlacementOfWidget(aWidgetId); + if (!placement) { + return null; + } + + let areaProps = gAreas.get(placement.area); + return areaProps && areaProps.get("type"); + }); + + this.__defineGetter__("instances", function() { + return Array.from(gBuildWindows, (wins) => this.forWindow(wins[0])); + }); + + Object.freeze(this); +} + +/** + * A XULWidgetSingleWrapper is a wrapper around a single instance of a XUL + * widget in a particular window. + */ +function XULWidgetSingleWrapper(aWidgetId, aNode, aDocument) { + this.isGroup = false; + + this.id = aWidgetId; + this.type = "custom"; + this.provider = CustomizableUI.PROVIDER_XUL; + + let weakDoc = Cu.getWeakReference(aDocument); + // If we keep a strong ref, the weak ref will never die, so null it out: + aDocument = null; + + this.__defineGetter__("node", function() { + // If we've set this to null (further down), we're sure there's nothing to + // be gotten here, so bail out early: + if (!weakDoc) { + return null; + } + if (aNode) { + // Return the last known node if it's still in the DOM... + if (aNode.ownerDocument.contains(aNode)) { + return aNode; + } + // ... or the toolbox + let toolbox = aNode.ownerGlobal.gNavToolbox; + if (toolbox && toolbox.palette && aNode.parentNode == toolbox.palette) { + return aNode; + } + // If it isn't, clear the cached value and fall through to the "slow" case: + aNode = null; + } + + let doc = weakDoc.get(); + if (doc) { + // Store locally so we can cache the result: + aNode = CustomizableUIInternal.findWidgetInWindow(aWidgetId, doc.defaultView); + return aNode; + } + // The weakref to the document is dead, we're done here forever more: + weakDoc = null; + return null; + }); + + this.__defineGetter__("anchor", function() { + let anchorId; + // First check for an anchor for the area: + let placement = CustomizableUIInternal.getPlacementOfWidget(aWidgetId); + if (placement) { + anchorId = gAreas.get(placement.area).get("anchor"); + } + + let node = this.node; + if (!anchorId && node) { + anchorId = node.getAttribute("cui-anchorid"); + } + + return (anchorId && node) ? node.ownerDocument.getElementById(anchorId) : node; + }); + + this.__defineGetter__("overflowed", function() { + let node = this.node; + if (!node) { + return false; + } + return node.getAttribute("overflowedItem") == "true"; + }); + + Object.freeze(this); +} + +const LAZY_RESIZE_INTERVAL_MS = 200; +const OVERFLOW_PANEL_HIDE_DELAY_MS = 500; + +function OverflowableToolbar(aToolbarNode) { + this._toolbar = aToolbarNode; + this._collapsed = new Map(); + this._enabled = true; + + this._toolbar.setAttribute("overflowable", "true"); + let doc = this._toolbar.ownerDocument; + this._target = this._toolbar.customizationTarget; + this._list = doc.getElementById(this._toolbar.getAttribute("overflowtarget")); + this._list.toolbox = this._toolbar.toolbox; + this._list.customizationTarget = this._list; + + let window = this._toolbar.ownerGlobal; + if (window.gBrowserInit.delayedStartupFinished) { + this.init(); + } else { + Services.obs.addObserver(this, "browser-delayed-startup-finished", false); + } +} + +OverflowableToolbar.prototype = { + initialized: false, + _forceOnOverflow: false, + + observe: function(aSubject, aTopic, aData) { + if (aTopic == "browser-delayed-startup-finished" && + aSubject == this._toolbar.ownerGlobal) { + Services.obs.removeObserver(this, "browser-delayed-startup-finished"); + this.init(); + } + }, + + init: function() { + let doc = this._toolbar.ownerDocument; + let window = doc.defaultView; + window.addEventListener("resize", this); + window.gNavToolbox.addEventListener("customizationstarting", this); + window.gNavToolbox.addEventListener("aftercustomization", this); + + let chevronId = this._toolbar.getAttribute("overflowbutton"); + this._chevron = doc.getElementById(chevronId); + this._chevron.addEventListener("command", this); + this._chevron.addEventListener("dragover", this); + this._chevron.addEventListener("dragend", this); + + let panelId = this._toolbar.getAttribute("overflowpanel"); + this._panel = doc.getElementById(panelId); + this._panel.addEventListener("popuphiding", this); + CustomizableUIInternal.addPanelCloseListeners(this._panel); + + CustomizableUI.addListener(this); + + // The 'overflow' event may have been fired before init was called. + if (this._toolbar.overflowedDuringConstruction) { + this.onOverflow(this._toolbar.overflowedDuringConstruction); + this._toolbar.overflowedDuringConstruction = null; + } + + this.initialized = true; + }, + + uninit: function() { + this._toolbar.removeEventListener("overflow", this._toolbar); + this._toolbar.removeEventListener("underflow", this._toolbar); + this._toolbar.removeAttribute("overflowable"); + + if (!this.initialized) { + Services.obs.removeObserver(this, "browser-delayed-startup-finished"); + return; + } + + this._disable(); + + let window = this._toolbar.ownerGlobal; + window.removeEventListener("resize", this); + window.gNavToolbox.removeEventListener("customizationstarting", this); + window.gNavToolbox.removeEventListener("aftercustomization", this); + this._chevron.removeEventListener("command", this); + this._chevron.removeEventListener("dragover", this); + this._chevron.removeEventListener("dragend", this); + this._panel.removeEventListener("popuphiding", this); + CustomizableUI.removeListener(this); + CustomizableUIInternal.removePanelCloseListeners(this._panel); + }, + + handleEvent: function(aEvent) { + switch (aEvent.type) { + case "aftercustomization": + this._enable(); + break; + case "command": + if (aEvent.target == this._chevron) { + this._onClickChevron(aEvent); + } else { + this._panel.hidePopup(); + } + break; + case "customizationstarting": + this._disable(); + break; + case "dragover": + this._showWithTimeout(); + break; + case "dragend": + this._panel.hidePopup(); + break; + case "popuphiding": + this._onPanelHiding(aEvent); + break; + case "resize": + this._onResize(aEvent); + } + }, + + show: function() { + if (this._panel.state == "open") { + return Promise.resolve(); + } + return new Promise(resolve => { + let doc = this._panel.ownerDocument; + this._panel.hidden = false; + let contextMenu = doc.getElementById(this._panel.getAttribute("context")); + gELS.addSystemEventListener(contextMenu, 'command', this, true); + let anchor = doc.getAnonymousElementByAttribute(this._chevron, "class", "toolbarbutton-icon"); + this._panel.openPopup(anchor || this._chevron); + this._chevron.open = true; + + let overflowableToolbarInstance = this; + this._panel.addEventListener("popupshown", function onPopupShown(aEvent) { + this.removeEventListener("popupshown", onPopupShown); + this.addEventListener("dragover", overflowableToolbarInstance); + this.addEventListener("dragend", overflowableToolbarInstance); + resolve(); + }); + }); + }, + + _onClickChevron: function(aEvent) { + if (this._chevron.open) { + this._panel.hidePopup(); + this._chevron.open = false; + } else { + this.show(); + } + }, + + _onPanelHiding: function(aEvent) { + this._chevron.open = false; + this._panel.removeEventListener("dragover", this); + this._panel.removeEventListener("dragend", this); + let doc = aEvent.target.ownerDocument; + let contextMenu = doc.getElementById(this._panel.getAttribute("context")); + gELS.removeSystemEventListener(contextMenu, 'command', this, true); + }, + + onOverflow: function(aEvent) { + // The rangeParent check is here because of bug 1111986 and ensuring that + // overflow events from the bookmarks toolbar items or similar things that + // manage their own overflow don't trigger an overflow on the entire toolbar + if (!this._enabled || + (aEvent && aEvent.target != this._toolbar.customizationTarget) || + (aEvent && aEvent.rangeParent)) + return; + + let child = this._target.lastChild; + + while (child && this._target.scrollLeftMin != this._target.scrollLeftMax) { + let prevChild = child.previousSibling; + + if (child.getAttribute("overflows") != "false") { + this._collapsed.set(child.id, this._target.clientWidth); + child.setAttribute("overflowedItem", true); + child.setAttribute("cui-anchorid", this._chevron.id); + CustomizableUIInternal.notifyListeners("onWidgetOverflow", child, this._target); + + this._list.insertBefore(child, this._list.firstChild); + if (!this._toolbar.hasAttribute("overflowing")) { + CustomizableUI.addListener(this); + } + this._toolbar.setAttribute("overflowing", "true"); + } + child = prevChild; + } + + let win = this._target.ownerGlobal; + win.UpdateUrlbarSearchSplitterState(); + }, + + _onResize: function(aEvent) { + if (!this._lazyResizeHandler) { + this._lazyResizeHandler = new DeferredTask(this._onLazyResize.bind(this), + LAZY_RESIZE_INTERVAL_MS); + } + this._lazyResizeHandler.arm(); + }, + + _moveItemsBackToTheirOrigin: function(shouldMoveAllItems) { + let placements = gPlacements.get(this._toolbar.id); + while (this._list.firstChild) { + let child = this._list.firstChild; + let minSize = this._collapsed.get(child.id); + + if (!shouldMoveAllItems && + minSize && + this._target.clientWidth <= minSize) { + return; + } + + this._collapsed.delete(child.id); + let beforeNodeIndex = placements.indexOf(child.id) + 1; + // If this is a skipintoolbarset item, meaning it doesn't occur in the placements list, + // we're inserting it at the end. This will mean first-in, first-out (more or less) + // leading to as little change in order as possible. + if (beforeNodeIndex == 0) { + beforeNodeIndex = placements.length; + } + let inserted = false; + for (; beforeNodeIndex < placements.length; beforeNodeIndex++) { + let beforeNode = this._target.getElementsByAttribute("id", placements[beforeNodeIndex])[0]; + if (beforeNode) { + this._target.insertBefore(child, beforeNode); + inserted = true; + break; + } + } + if (!inserted) { + this._target.appendChild(child); + } + child.removeAttribute("cui-anchorid"); + child.removeAttribute("overflowedItem"); + CustomizableUIInternal.notifyListeners("onWidgetUnderflow", child, this._target); + } + + let win = this._target.ownerGlobal; + win.UpdateUrlbarSearchSplitterState(); + + if (!this._collapsed.size) { + this._toolbar.removeAttribute("overflowing"); + CustomizableUI.removeListener(this); + } + }, + + _onLazyResize: function() { + if (!this._enabled) + return; + + if (this._target.scrollLeftMin != this._target.scrollLeftMax) { + this.onOverflow(); + } else { + this._moveItemsBackToTheirOrigin(); + } + }, + + _disable: function() { + this._enabled = false; + this._moveItemsBackToTheirOrigin(true); + if (this._lazyResizeHandler) { + this._lazyResizeHandler.disarm(); + } + }, + + _enable: function() { + this._enabled = true; + this.onOverflow(); + }, + + onWidgetBeforeDOMChange: function(aNode, aNextNode, aContainer) { + if (aContainer != this._target && aContainer != this._list) { + return; + } + // When we (re)move an item, update all the items that come after it in the list + // with the minsize *of the item before the to-be-removed node*. This way, we + // ensure that we try to move items back as soon as that's possible. + if (aNode.parentNode == this._list) { + let updatedMinSize; + if (aNode.previousSibling) { + updatedMinSize = this._collapsed.get(aNode.previousSibling.id); + } else { + // Force (these) items to try to flow back into the bar: + updatedMinSize = 1; + } + let nextItem = aNode.nextSibling; + while (nextItem) { + this._collapsed.set(nextItem.id, updatedMinSize); + nextItem = nextItem.nextSibling; + } + } + }, + + onWidgetAfterDOMChange: function(aNode, aNextNode, aContainer) { + if (aContainer != this._target && aContainer != this._list) { + return; + } + + let nowInBar = aNode.parentNode == aContainer; + let nowOverflowed = aNode.parentNode == this._list; + let wasOverflowed = this._collapsed.has(aNode.id); + + // If this wasn't overflowed before... + if (!wasOverflowed) { + // ... but it is now, then we added to the overflow panel. Exciting stuff: + if (nowOverflowed) { + // NB: we're guaranteed that it has a previousSibling, because if it didn't, + // we would have added it to the toolbar instead. See getOverflowedNextNode. + let prevId = aNode.previousSibling.id; + let minSize = this._collapsed.get(prevId); + this._collapsed.set(aNode.id, minSize); + aNode.setAttribute("cui-anchorid", this._chevron.id); + aNode.setAttribute("overflowedItem", true); + CustomizableUIInternal.notifyListeners("onWidgetOverflow", aNode, this._target); + } + // If it is not overflowed and not in the toolbar, and was not overflowed + // either, it moved out of the toolbar. That means there's now space in there! + // Let's try to move stuff back: + else if (!nowInBar) { + this._moveItemsBackToTheirOrigin(true); + } + // If it's in the toolbar now, then we don't care. An overflow event may + // fire afterwards; that's ok! + } + // If it used to be overflowed... + else if (!nowOverflowed) { + // ... and isn't anymore, let's remove our bookkeeping: + this._collapsed.delete(aNode.id); + aNode.removeAttribute("cui-anchorid"); + aNode.removeAttribute("overflowedItem"); + CustomizableUIInternal.notifyListeners("onWidgetUnderflow", aNode, this._target); + + if (!this._collapsed.size) { + this._toolbar.removeAttribute("overflowing"); + CustomizableUI.removeListener(this); + } + } else if (aNode.previousSibling) { + // but if it still is, it must have changed places. Bookkeep: + let prevId = aNode.previousSibling.id; + let minSize = this._collapsed.get(prevId); + this._collapsed.set(aNode.id, minSize); + } else { + // If it's now the first item in the overflow list, + // maybe we can return it: + this._moveItemsBackToTheirOrigin(); + } + }, + + findOverflowedInsertionPoints: function(aNode) { + let newNodeCanOverflow = aNode.getAttribute("overflows") != "false"; + let areaId = this._toolbar.id; + let placements = gPlacements.get(areaId); + let nodeIndex = placements.indexOf(aNode.id); + let nodeBeforeNewNodeIsOverflown = false; + + let loopIndex = -1; + while (++loopIndex < placements.length) { + let nextNodeId = placements[loopIndex]; + if (loopIndex > nodeIndex) { + if (newNodeCanOverflow && this._collapsed.has(nextNodeId)) { + let nextNode = this._list.getElementsByAttribute("id", nextNodeId).item(0); + if (nextNode) { + return [this._list, nextNode]; + } + } + if (!nodeBeforeNewNodeIsOverflown || !newNodeCanOverflow) { + let nextNode = this._target.getElementsByAttribute("id", nextNodeId).item(0); + if (nextNode) { + return [this._target, nextNode]; + } + } + } else if (loopIndex < nodeIndex && this._collapsed.has(nextNodeId)) { + nodeBeforeNewNodeIsOverflown = true; + } + } + + let containerForAppending = (this._collapsed.size && newNodeCanOverflow) ? + this._list : this._target; + return [containerForAppending, null]; + }, + + getContainerFor: function(aNode) { + if (aNode.getAttribute("overflowedItem") == "true") { + return this._list; + } + return this._target; + }, + + _hideTimeoutId: null, + _showWithTimeout: function() { + this.show().then(function () { + let window = this._toolbar.ownerGlobal; + if (this._hideTimeoutId) { + window.clearTimeout(this._hideTimeoutId); + } + this._hideTimeoutId = window.setTimeout(() => { + if (!this._panel.firstChild.matches(":hover")) { + this._panel.hidePopup(); + } + }, OVERFLOW_PANEL_HIDE_DELAY_MS); + }.bind(this)); + }, +}; + +CustomizableUIInternal.initialize(); |