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authorThomas Groman <tgroman@nuegia.net>2019-12-16 19:48:42 -0800
committerThomas Groman <tgroman@nuegia.net>2019-12-16 19:48:42 -0800
commit4492b5f8e774bf3b4f21e4e468fc052cbcbb468a (patch)
tree37970571a7dcbeb6b58c991ce718ce7001ac97d6 /base/content/sanitizeDialog.js
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+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+var Cc = Components.classes;
+var Ci = Components.interfaces;
+
+var gSanitizePromptDialog = {
+
+ get bundleBrowser()
+ {
+ if (!this._bundleBrowser)
+ this._bundleBrowser = document.getElementById("bundleBrowser");
+ return this._bundleBrowser;
+ },
+
+ get selectedTimespan()
+ {
+ var durList = document.getElementById("sanitizeDurationChoice");
+ return parseInt(durList.value);
+ },
+
+ get sanitizePreferences()
+ {
+ if (!this._sanitizePreferences) {
+ this._sanitizePreferences =
+ document.getElementById("sanitizePreferences");
+ }
+ return this._sanitizePreferences;
+ },
+
+ get warningBox()
+ {
+ return document.getElementById("sanitizeEverythingWarningBox");
+ },
+
+ init: function ()
+ {
+ // This is used by selectByTimespan() to determine if the window has loaded.
+ this._inited = true;
+
+ var s = new Sanitizer();
+ s.prefDomain = "privacy.cpd.";
+
+ let sanitizeItemList = document.querySelectorAll("#itemList > [preference]");
+ for (let i = 0; i < sanitizeItemList.length; i++) {
+ let prefItem = sanitizeItemList[i];
+ let name = s.getNameFromPreference(prefItem.getAttribute("preference"));
+ s.canClearItem(name, function canClearCallback(aItem, aCanClear, aPrefItem) {
+ if (!aCanClear) {
+ aPrefItem.preference = null;
+ aPrefItem.checked = false;
+ aPrefItem.disabled = true;
+ }
+ }, prefItem);
+ }
+
+ document.documentElement.getButton("accept").label =
+ this.bundleBrowser.getString("sanitizeButtonOK");
+
+ if (this.selectedTimespan === Sanitizer.TIMESPAN_EVERYTHING) {
+ this.prepareWarning();
+ this.warningBox.hidden = false;
+ document.title =
+ this.bundleBrowser.getString("sanitizeDialog2.everything.title");
+ }
+ else
+ this.warningBox.hidden = true;
+ },
+
+ selectByTimespan: function ()
+ {
+ // This method is the onselect handler for the duration dropdown. As a
+ // result it's called a couple of times before onload calls init().
+ if (!this._inited)
+ return;
+
+ var warningBox = this.warningBox;
+
+ // If clearing everything
+ if (this.selectedTimespan === Sanitizer.TIMESPAN_EVERYTHING) {
+ this.prepareWarning();
+ if (warningBox.hidden) {
+ warningBox.hidden = false;
+ window.resizeBy(0, warningBox.boxObject.height);
+ }
+ window.document.title =
+ this.bundleBrowser.getString("sanitizeDialog2.everything.title");
+ return;
+ }
+
+ // If clearing a specific time range
+ if (!warningBox.hidden) {
+ window.resizeBy(0, -warningBox.boxObject.height);
+ warningBox.hidden = true;
+ }
+ window.document.title =
+ window.document.documentElement.getAttribute("noneverythingtitle");
+ },
+
+ sanitize: function ()
+ {
+ // Update pref values before handing off to the sanitizer (bug 453440)
+ this.updatePrefs();
+ var s = new Sanitizer();
+ s.prefDomain = "privacy.cpd.";
+
+ s.range = Sanitizer.getClearRange(this.selectedTimespan);
+ s.ignoreTimespan = !s.range;
+
+ // As the sanitize is async, we disable the buttons, update the label on
+ // the 'accept' button to indicate things are happening and return false -
+ // once the async operation completes (either with or without errors)
+ // we close the window.
+ let docElt = document.documentElement;
+ let acceptButton = docElt.getButton("accept");
+ acceptButton.disabled = true;
+ acceptButton.setAttribute("label",
+ this.bundleBrowser.getString("sanitizeButtonClearing"));
+ docElt.getButton("cancel").disabled = true;
+ try {
+ s.sanitize().then(window.close, window.close);
+ } catch (er) {
+ Components.utils.reportError("Exception during sanitize: " + er);
+ return true; // We *do* want to close immediately on error.
+ }
+ return false;
+ },
+
+ /**
+ * If the panel that displays a warning when the duration is "Everything" is
+ * not set up, sets it up. Otherwise does nothing.
+ *
+ * @param aDontShowItemList Whether only the warning message should be updated.
+ * True means the item list visibility status should not
+ * be changed.
+ */
+ prepareWarning: function (aDontShowItemList) {
+ // If the date and time-aware locale warning string is ever used again,
+ // initialize it here. Currently we use the no-visits warning string,
+ // which does not include date and time. See bug 480169 comment 48.
+
+ var warningStringID;
+ if (this.hasNonSelectedItems()) {
+ warningStringID = "sanitizeSelectedWarning";
+ if (!aDontShowItemList)
+ this.showItemList();
+ }
+ else {
+ warningStringID = "sanitizeEverythingWarning2";
+ }
+
+ var warningDesc = document.getElementById("sanitizeEverythingWarning");
+ warningDesc.textContent =
+ this.bundleBrowser.getString(warningStringID);
+ },
+
+ /**
+ * Called when the value of a preference element is synced from the actual
+ * pref. Enables or disables the OK button appropriately.
+ */
+ onReadGeneric: function ()
+ {
+ var found = false;
+
+ // Find any other pref that's checked and enabled.
+ var i = 0;
+ while (!found && i < this.sanitizePreferences.childNodes.length) {
+ var preference = this.sanitizePreferences.childNodes[i];
+
+ found = !!preference.value &&
+ !preference.disabled;
+ i++;
+ }
+
+ try {
+ document.documentElement.getButton("accept").disabled = !found;
+ }
+ catch (e) { }
+
+ // Update the warning prompt if needed
+ this.prepareWarning(true);
+
+ return undefined;
+ },
+
+ /**
+ * Sanitizer.prototype.sanitize() requires the prefs to be up-to-date.
+ * Because the type of this prefwindow is "child" -- and that's needed because
+ * without it the dialog has no OK and Cancel buttons -- the prefs are not
+ * updated on dialogaccept on platforms that don't support instant-apply
+ * (i.e., Windows). We must therefore manually set the prefs from their
+ * corresponding preference elements.
+ */
+ updatePrefs : function ()
+ {
+ var tsPref = document.getElementById("privacy.sanitize.timeSpan");
+ Sanitizer.prefs.setIntPref("timeSpan", this.selectedTimespan);
+
+ // Keep the pref for the download history in sync with the history pref.
+ document.getElementById("privacy.cpd.downloads").value =
+ document.getElementById("privacy.cpd.history").value;
+
+ // Now manually set the prefs from their corresponding preference
+ // elements.
+ var prefs = this.sanitizePreferences.rootBranch;
+ for (let i = 0; i < this.sanitizePreferences.childNodes.length; ++i) {
+ var p = this.sanitizePreferences.childNodes[i];
+ prefs.setBoolPref(p.name, p.value);
+ }
+ },
+
+ /**
+ * Check if all of the history items have been selected like the default status.
+ */
+ hasNonSelectedItems: function () {
+ let checkboxes = document.querySelectorAll("#itemList > [preference]");
+ for (let i = 0; i < checkboxes.length; ++i) {
+ let pref = document.getElementById(checkboxes[i].getAttribute("preference"));
+ if (!pref.value)
+ return true;
+ }
+ return false;
+ },
+
+ /**
+ * Show the history items list.
+ */
+ showItemList: function () {
+ var itemList = document.getElementById("itemList");
+ var expanderButton = document.getElementById("detailsExpander");
+
+ if (itemList.collapsed) {
+ expanderButton.className = "expander-up";
+ itemList.setAttribute("collapsed", "false");
+ if (document.documentElement.boxObject.height)
+ window.resizeBy(0, itemList.boxObject.height);
+ }
+ },
+
+ /**
+ * Hide the history items list.
+ */
+ hideItemList: function () {
+ var itemList = document.getElementById("itemList");
+ var expanderButton = document.getElementById("detailsExpander");
+
+ if (!itemList.collapsed) {
+ expanderButton.className = "expander-down";
+ window.resizeBy(0, -itemList.boxObject.height);
+ itemList.setAttribute("collapsed", "true");
+ }
+ },
+
+ /**
+ * Called by the item list expander button to toggle the list's visibility.
+ */
+ toggleItemList: function ()
+ {
+ var itemList = document.getElementById("itemList");
+
+ if (itemList.collapsed)
+ this.showItemList();
+ else
+ this.hideItemList();
+ }
+
+#ifdef CRH_DIALOG_TREE_VIEW
+ // A duration value; used in the same context as Sanitizer.TIMESPAN_HOUR,
+ // Sanitizer.TIMESPAN_2HOURS, et al. This should match the value attribute
+ // of the sanitizeDurationCustom menuitem.
+ get TIMESPAN_CUSTOM()
+ {
+ return -1;
+ },
+
+ get placesTree()
+ {
+ if (!this._placesTree)
+ this._placesTree = document.getElementById("placesTree");
+ return this._placesTree;
+ },
+
+ init: function ()
+ {
+ // This is used by selectByTimespan() to determine if the window has loaded.
+ this._inited = true;
+
+ var s = new Sanitizer();
+ s.prefDomain = "privacy.cpd.";
+
+ let sanitizeItemList = document.querySelectorAll("#itemList > [preference]");
+ for (let i = 0; i < sanitizeItemList.length; i++) {
+ let prefItem = sanitizeItemList[i];
+ let name = s.getNameFromPreference(prefItem.getAttribute("preference"));
+ s.canClearItem(name, function canClearCallback(aCanClear) {
+ if (!aCanClear) {
+ prefItem.preference = null;
+ prefItem.checked = false;
+ prefItem.disabled = true;
+ }
+ });
+ }
+
+ document.documentElement.getButton("accept").label =
+ this.bundleBrowser.getString("sanitizeButtonOK");
+
+ this.selectByTimespan();
+ },
+
+ /**
+ * Sets up the hashes this.durationValsToRows, which maps duration values
+ * to rows in the tree, this.durationRowsToVals, which maps rows in
+ * the tree to duration values, and this.durationStartTimes, which maps
+ * duration values to their corresponding start times.
+ */
+ initDurationDropdown: function ()
+ {
+ // First, calculate the start times for each duration.
+ this.durationStartTimes = {};
+ var durVals = [];
+ var durPopup = document.getElementById("sanitizeDurationPopup");
+ var durMenuitems = durPopup.childNodes;
+ for (let i = 0; i < durMenuitems.length; i++) {
+ let durMenuitem = durMenuitems[i];
+ let durVal = parseInt(durMenuitem.value);
+ if (durMenuitem.localName === "menuitem" &&
+ durVal !== Sanitizer.TIMESPAN_EVERYTHING &&
+ durVal !== this.TIMESPAN_CUSTOM) {
+ durVals.push(durVal);
+ let durTimes = Sanitizer.getClearRange(durVal);
+ this.durationStartTimes[durVal] = durTimes[0];
+ }
+ }
+
+ // Sort the duration values ascending. Because one tree index can map to
+ // more than one duration, this ensures that this.durationRowsToVals maps
+ // a row index to the largest duration possible in the code below.
+ durVals.sort();
+
+ // Now calculate the rows in the tree of the durations' start times. For
+ // each duration, we are looking for the node in the tree whose time is the
+ // smallest time greater than or equal to the duration's start time.
+ this.durationRowsToVals = {};
+ this.durationValsToRows = {};
+ var view = this.placesTree.view;
+ // For all rows in the tree except the grippy row...
+ for (let i = 0; i < view.rowCount - 1; i++) {
+ let unfoundDurVals = [];
+ let nodeTime = view.QueryInterface(Ci.nsINavHistoryResultTreeViewer).
+ nodeForTreeIndex(i).time;
+ // For all durations whose rows have not yet been found in the tree, see
+ // if index i is their index. An index may map to more than one duration,
+ // in which case the final duration (the largest) wins.
+ for (let j = 0; j < durVals.length; j++) {
+ let durVal = durVals[j];
+ let durStartTime = this.durationStartTimes[durVal];
+ if (nodeTime < durStartTime) {
+ this.durationValsToRows[durVal] = i - 1;
+ this.durationRowsToVals[i - 1] = durVal;
+ }
+ else
+ unfoundDurVals.push(durVal);
+ }
+ durVals = unfoundDurVals;
+ }
+
+ // If any durations were not found above, then every node in the tree has a
+ // time greater than or equal to the duration. In other words, those
+ // durations include the entire tree (except the grippy row).
+ for (let i = 0; i < durVals.length; i++) {
+ let durVal = durVals[i];
+ this.durationValsToRows[durVal] = view.rowCount - 2;
+ this.durationRowsToVals[view.rowCount - 2] = durVal;
+ }
+ },
+
+ /**
+ * If the Places tree is not set up, sets it up. Otherwise does nothing.
+ */
+ ensurePlacesTreeIsInited: function ()
+ {
+ if (this._placesTreeIsInited)
+ return;
+
+ this._placesTreeIsInited = true;
+
+ // Either "Last Four Hours" or "Today" will have the most history. If
+ // it's been more than 4 hours since today began, "Today" will. Otherwise
+ // "Last Four Hours" will.
+ var times = Sanitizer.getClearRange(Sanitizer.TIMESPAN_TODAY);
+
+ // If it's been less than 4 hours since today began, use the past 4 hours.
+ if (times[1] - times[0] < 14400000000) { // 4*60*60*1000000
+ times = Sanitizer.getClearRange(Sanitizer.TIMESPAN_4HOURS);
+ }
+
+ var histServ = Cc["@mozilla.org/browser/nav-history-service;1"].
+ getService(Ci.nsINavHistoryService);
+ var query = histServ.getNewQuery();
+ query.beginTimeReference = query.TIME_RELATIVE_EPOCH;
+ query.beginTime = times[0];
+ query.endTimeReference = query.TIME_RELATIVE_EPOCH;
+ query.endTime = times[1];
+ var opts = histServ.getNewQueryOptions();
+ opts.sortingMode = opts.SORT_BY_DATE_DESCENDING;
+ opts.queryType = opts.QUERY_TYPE_HISTORY;
+ var result = histServ.executeQuery(query, opts);
+
+ var view = gContiguousSelectionTreeHelper.setTree(this.placesTree,
+ new PlacesTreeView());
+ result.addObserver(view, false);
+ this.initDurationDropdown();
+ },
+
+ /**
+ * Called on select of the duration dropdown and when grippyMoved() sets a
+ * duration based on the location of the grippy row. Selects all the nodes in
+ * the tree that are contained in the selected duration. If clearing
+ * everything, the warning panel is shown instead.
+ */
+ selectByTimespan: function ()
+ {
+ // This method is the onselect handler for the duration dropdown. As a
+ // result it's called a couple of times before onload calls init().
+ if (!this._inited)
+ return;
+
+ var durDeck = document.getElementById("durationDeck");
+ var durList = document.getElementById("sanitizeDurationChoice");
+ var durVal = parseInt(durList.value);
+ var durCustom = document.getElementById("sanitizeDurationCustom");
+
+ // If grippy row is not at a duration boundary, show the custom menuitem;
+ // otherwise, hide it. Since the user cannot specify a custom duration by
+ // using the dropdown, this conditional is true only when this method is
+ // called onselect from grippyMoved(), so no selection need be made.
+ if (durVal === this.TIMESPAN_CUSTOM) {
+ durCustom.hidden = false;
+ return;
+ }
+ durCustom.hidden = true;
+
+ // If clearing everything, show the warning and change the dialog's title.
+ if (durVal === Sanitizer.TIMESPAN_EVERYTHING) {
+ this.prepareWarning();
+ durDeck.selectedIndex = 1;
+ window.document.title =
+ this.bundleBrowser.getString("sanitizeDialog2.everything.title");
+ document.documentElement.getButton("accept").disabled = false;
+ return;
+ }
+
+ // Otherwise -- if clearing a specific time range -- select that time range
+ // in the tree.
+ this.ensurePlacesTreeIsInited();
+ durDeck.selectedIndex = 0;
+ window.document.title =
+ window.document.documentElement.getAttribute("noneverythingtitle");
+ var durRow = this.durationValsToRows[durVal];
+ gContiguousSelectionTreeHelper.rangedSelect(durRow);
+ gContiguousSelectionTreeHelper.scrollToGrippy();
+
+ // If duration is empty (there are no selected rows), disable the dialog's
+ // OK button.
+ document.documentElement.getButton("accept").disabled = durRow < 0;
+ },
+
+ sanitize: function ()
+ {
+ // Update pref values before handing off to the sanitizer (bug 453440)
+ this.updatePrefs();
+ var s = new Sanitizer();
+ s.prefDomain = "privacy.cpd.";
+
+ var durList = document.getElementById("sanitizeDurationChoice");
+ var durValue = parseInt(durList.value);
+ s.ignoreTimespan = durValue === Sanitizer.TIMESPAN_EVERYTHING;
+
+ // Set the sanitizer's time range if we're not clearing everything.
+ if (!s.ignoreTimespan) {
+ // If user selected a custom timespan, use that.
+ if (durValue === this.TIMESPAN_CUSTOM) {
+ var view = this.placesTree.view;
+ var now = Date.now() * 1000;
+ // We disable the dialog's OK button if there's no selection, but we'll
+ // handle that case just in... case.
+ if (view.selection.getRangeCount() === 0)
+ s.range = [now, now];
+ else {
+ var startIndexRef = {};
+ // Tree sorted by visit date DEscending, so start time time comes last.
+ view.selection.getRangeAt(0, {}, startIndexRef);
+ view.QueryInterface(Ci.nsINavHistoryResultTreeViewer);
+ var startNode = view.nodeForTreeIndex(startIndexRef.value);
+ s.range = [startNode.time, now];
+ }
+ }
+ // Otherwise use the predetermined range.
+ else
+ s.range = [this.durationStartTimes[durValue], Date.now() * 1000];
+ }
+
+ try {
+ s.sanitize();
+ } catch (er) {
+ Components.utils.reportError("Exception during sanitize: " + er);
+ }
+ return true;
+ },
+
+ /**
+ * In order to mark the custom Places tree view and its nsINavHistoryResult
+ * for garbage collection, we need to break the reference cycle between the
+ * two.
+ */
+ unload: function ()
+ {
+ let result = this.placesTree.getResult();
+ result.removeObserver(this.placesTree.view);
+ this.placesTree.view = null;
+ },
+
+ /**
+ * Called when the user moves the grippy by dragging it, clicking in the tree,
+ * or on keypress. Updates the duration dropdown so that it displays the
+ * appropriate specific or custom duration.
+ *
+ * @param aEventName
+ * The name of the event whose handler called this method, e.g.,
+ * "ondragstart", "onkeypress", etc.
+ * @param aEvent
+ * The event captured in the event handler.
+ */
+ grippyMoved: function (aEventName, aEvent)
+ {
+ gContiguousSelectionTreeHelper[aEventName](aEvent);
+ var lastSelRow = gContiguousSelectionTreeHelper.getGrippyRow() - 1;
+ var durList = document.getElementById("sanitizeDurationChoice");
+ var durValue = parseInt(durList.value);
+
+ // Multiple durations can map to the same row. Don't update the dropdown
+ // if the current duration is valid for lastSelRow.
+ if ((durValue !== this.TIMESPAN_CUSTOM ||
+ lastSelRow in this.durationRowsToVals) &&
+ (durValue === this.TIMESPAN_CUSTOM ||
+ this.durationValsToRows[durValue] !== lastSelRow)) {
+ // Setting durList.value causes its onselect handler to fire, which calls
+ // selectByTimespan().
+ if (lastSelRow in this.durationRowsToVals)
+ durList.value = this.durationRowsToVals[lastSelRow];
+ else
+ durList.value = this.TIMESPAN_CUSTOM;
+ }
+
+ // If there are no selected rows, disable the dialog's OK button.
+ document.documentElement.getButton("accept").disabled = lastSelRow < 0;
+ }
+#endif
+
+};
+
+
+#ifdef CRH_DIALOG_TREE_VIEW
+/**
+ * A helper for handling contiguous selection in the tree.
+ */
+var gContiguousSelectionTreeHelper = {
+
+ /**
+ * Gets the tree associated with this helper.
+ */
+ get tree()
+ {
+ return this._tree;
+ },
+
+ /**
+ * Sets the tree that this module handles. The tree is assigned a new view
+ * that is equipped to handle contiguous selection. You can pass in an
+ * object that will be used as the prototype of the new view. Otherwise
+ * the tree's current view is used as the prototype.
+ *
+ * @param aTreeElement
+ * The tree element
+ * @param aProtoTreeView
+ * If defined, this will be used as the prototype of the tree's new
+ * view
+ * @return The new view
+ */
+ setTree: function CSTH_setTree(aTreeElement, aProtoTreeView)
+ {
+ this._tree = aTreeElement;
+ var newView = this._makeTreeView(aProtoTreeView || aTreeElement.view);
+ aTreeElement.view = newView;
+ return newView;
+ },
+
+ /**
+ * The index of the row that the grippy occupies. Note that the index of the
+ * last selected row is getGrippyRow() - 1. If getGrippyRow() is 0, then
+ * no selection exists.
+ *
+ * @return The row index of the grippy
+ */
+ getGrippyRow: function CSTH_getGrippyRow()
+ {
+ var sel = this.tree.view.selection;
+ var rangeCount = sel.getRangeCount();
+ if (rangeCount === 0)
+ return 0;
+ if (rangeCount !== 1) {
+ throw "contiguous selection tree helper: getGrippyRow called with " +
+ "multiple selection ranges";
+ }
+ var max = {};
+ sel.getRangeAt(0, {}, max);
+ return max.value + 1;
+ },
+
+ /**
+ * Helper function for the dragover event. Your dragover listener should
+ * call this. It updates the selection in the tree under the mouse.
+ *
+ * @param aEvent
+ * The observed dragover event
+ */
+ ondragover: function CSTH_ondragover(aEvent)
+ {
+ // Without this when dragging on Windows the mouse cursor is a "no" sign.
+ // This makes it a drop symbol.
+ var ds = Cc["@mozilla.org/widget/dragservice;1"].
+ getService(Ci.nsIDragService).
+ getCurrentSession();
+ ds.canDrop = true;
+ ds.dragAction = 0;
+
+ var tbo = this.tree.treeBoxObject;
+ aEvent.QueryInterface(Ci.nsIDOMMouseEvent);
+ var hoverRow = tbo.getRowAt(aEvent.clientX, aEvent.clientY);
+
+ if (hoverRow < 0)
+ return;
+
+ this.rangedSelect(hoverRow - 1);
+ },
+
+ /**
+ * Helper function for the dragstart event. Your dragstart listener should
+ * call this. It starts a drag session.
+ *
+ * @param aEvent
+ * The observed dragstart event
+ */
+ ondragstart: function CSTH_ondragstart(aEvent)
+ {
+ var tbo = this.tree.treeBoxObject;
+ var clickedRow = tbo.getRowAt(aEvent.clientX, aEvent.clientY);
+
+ if (clickedRow !== this.getGrippyRow())
+ return;
+
+ // This part is a hack. What we really want is a grab and slide, not
+ // drag and drop. Start a move drag session with dummy data and a
+ // dummy region. Set the region's coordinates to (Infinity, Infinity)
+ // so it's drawn offscreen and its size to (1, 1).
+ var arr = Cc["@mozilla.org/supports-array;1"].
+ createInstance(Ci.nsISupportsArray);
+ var trans = Cc["@mozilla.org/widget/transferable;1"].
+ createInstance(Ci.nsITransferable);
+ trans.init(null);
+ trans.setTransferData('dummy-flavor', null, 0);
+ arr.AppendElement(trans);
+ var reg = Cc["@mozilla.org/gfx/region;1"].
+ createInstance(Ci.nsIScriptableRegion);
+ reg.setToRect(Infinity, Infinity, 1, 1);
+ var ds = Cc["@mozilla.org/widget/dragservice;1"].
+ getService(Ci.nsIDragService);
+ ds.invokeDragSession(aEvent.target, arr, reg, ds.DRAGDROP_ACTION_MOVE);
+ },
+
+ /**
+ * Helper function for the keypress event. Your keypress listener should
+ * call this. Users can use Up, Down, Page Up/Down, Home, and End to move
+ * the bottom of the selection window.
+ *
+ * @param aEvent
+ * The observed keypress event
+ */
+ onkeypress: function CSTH_onkeypress(aEvent)
+ {
+ var grippyRow = this.getGrippyRow();
+ var tbo = this.tree.treeBoxObject;
+ var rangeEnd;
+ switch (aEvent.keyCode) {
+ case aEvent.DOM_VK_HOME:
+ rangeEnd = 0;
+ break;
+ case aEvent.DOM_VK_PAGE_UP:
+ rangeEnd = grippyRow - tbo.getPageLength();
+ break;
+ case aEvent.DOM_VK_UP:
+ rangeEnd = grippyRow - 2;
+ break;
+ case aEvent.DOM_VK_DOWN:
+ rangeEnd = grippyRow;
+ break;
+ case aEvent.DOM_VK_PAGE_DOWN:
+ rangeEnd = grippyRow + tbo.getPageLength();
+ break;
+ case aEvent.DOM_VK_END:
+ rangeEnd = this.tree.view.rowCount - 2;
+ break;
+ default:
+ return;
+ break;
+ }
+
+ aEvent.stopPropagation();
+
+ // First, clip rangeEnd. this.rangedSelect() doesn't clip the range if we
+ // select past the ends of the tree.
+ if (rangeEnd < 0)
+ rangeEnd = -1;
+ else if (this.tree.view.rowCount - 2 < rangeEnd)
+ rangeEnd = this.tree.view.rowCount - 2;
+
+ // Next, (de)select.
+ this.rangedSelect(rangeEnd);
+
+ // Finally, scroll the tree. We always want one row above and below the
+ // grippy row to be visible if possible.
+ if (rangeEnd < grippyRow) // moved up
+ tbo.ensureRowIsVisible(rangeEnd < 0 ? 0 : rangeEnd);
+ else { // moved down
+ if (rangeEnd + 2 < this.tree.view.rowCount)
+ tbo.ensureRowIsVisible(rangeEnd + 2);
+ else if (rangeEnd + 1 < this.tree.view.rowCount)
+ tbo.ensureRowIsVisible(rangeEnd + 1);
+ }
+ },
+
+ /**
+ * Helper function for the mousedown event. Your mousedown listener should
+ * call this. Users can click on individual rows to make the selection
+ * jump to them immediately.
+ *
+ * @param aEvent
+ * The observed mousedown event
+ */
+ onmousedown: function CSTH_onmousedown(aEvent)
+ {
+ var tbo = this.tree.treeBoxObject;
+ var clickedRow = tbo.getRowAt(aEvent.clientX, aEvent.clientY);
+
+ if (clickedRow < 0 || clickedRow >= this.tree.view.rowCount)
+ return;
+
+ if (clickedRow < this.getGrippyRow())
+ this.rangedSelect(clickedRow);
+ else if (clickedRow > this.getGrippyRow())
+ this.rangedSelect(clickedRow - 1);
+ },
+
+ /**
+ * Selects range [0, aEndRow] in the tree. The grippy row will then be at
+ * index aEndRow + 1. aEndRow may be -1, in which case the selection is
+ * cleared and the grippy row will be at index 0.
+ *
+ * @param aEndRow
+ * The range [0, aEndRow] will be selected.
+ */
+ rangedSelect: function CSTH_rangedSelect(aEndRow)
+ {
+ var tbo = this.tree.treeBoxObject;
+ if (aEndRow < 0)
+ this.tree.view.selection.clearSelection();
+ else
+ this.tree.view.selection.rangedSelect(0, aEndRow, false);
+ tbo.invalidateRange(tbo.getFirstVisibleRow(), tbo.getLastVisibleRow());
+ },
+
+ /**
+ * Scrolls the tree so that the grippy row is in the center of the view.
+ */
+ scrollToGrippy: function CSTH_scrollToGrippy()
+ {
+ var rowCount = this.tree.view.rowCount;
+ var tbo = this.tree.treeBoxObject;
+ var pageLen = tbo.getPageLength() ||
+ parseInt(this.tree.getAttribute("rows")) ||
+ 10;
+
+ // All rows fit on a single page.
+ if (rowCount <= pageLen)
+ return;
+
+ var scrollToRow = this.getGrippyRow() - Math.ceil(pageLen / 2.0);
+
+ // Grippy row is in first half of first page.
+ if (scrollToRow < 0)
+ scrollToRow = 0;
+
+ // Grippy row is in last half of last page.
+ else if (rowCount < scrollToRow + pageLen)
+ scrollToRow = rowCount - pageLen;
+
+ tbo.scrollToRow(scrollToRow);
+ },
+
+ /**
+ * Creates a new tree view suitable for contiguous selection. If
+ * aProtoTreeView is specified, it's used as the new view's prototype.
+ * Otherwise the tree's current view is used as the prototype.
+ *
+ * @param aProtoTreeView
+ * Used as the new view's prototype if specified
+ */
+ _makeTreeView: function CSTH__makeTreeView(aProtoTreeView)
+ {
+ var view = aProtoTreeView;
+ var that = this;
+
+ //XXXadw: When Alex gets the grippy icon done, this may or may not change,
+ // depending on how we style it.
+ view.isSeparator = function CSTH_View_isSeparator(aRow)
+ {
+ return aRow === that.getGrippyRow();
+ };
+
+ // rowCount includes the grippy row.
+ view.__defineGetter__("_rowCount", view.__lookupGetter__("rowCount"));
+ view.__defineGetter__("rowCount",
+ function CSTH_View_rowCount()
+ {
+ return this._rowCount + 1;
+ });
+
+ // This has to do with visual feedback in the view itself, e.g., drawing
+ // a small line underneath the dropzone. Not what we want.
+ view.canDrop = function CSTH_View_canDrop() { return false; };
+
+ // No clicking headers to sort the tree or sort feedback on columns.
+ view.cycleHeader = function CSTH_View_cycleHeader() {};
+ view.sortingChanged = function CSTH_View_sortingChanged() {};
+
+ // Override a bunch of methods to account for the grippy row.
+
+ view._getCellProperties = view.getCellProperties;
+ view.getCellProperties =
+ function CSTH_View_getCellProperties(aRow, aCol)
+ {
+ var grippyRow = that.getGrippyRow();
+ if (aRow === grippyRow)
+ return "grippyRow";
+ if (aRow < grippyRow)
+ return this._getCellProperties(aRow, aCol);
+
+ return this._getCellProperties(aRow - 1, aCol);
+ };
+
+ view._getRowProperties = view.getRowProperties;
+ view.getRowProperties =
+ function CSTH_View_getRowProperties(aRow)
+ {
+ var grippyRow = that.getGrippyRow();
+ if (aRow === grippyRow)
+ return "grippyRow";
+
+ if (aRow < grippyRow)
+ return this._getRowProperties(aRow);
+
+ return this._getRowProperties(aRow - 1);
+ };
+
+ view._getCellText = view.getCellText;
+ view.getCellText =
+ function CSTH_View_getCellText(aRow, aCol)
+ {
+ var grippyRow = that.getGrippyRow();
+ if (aRow === grippyRow)
+ return "";
+ aRow = aRow < grippyRow ? aRow : aRow - 1;
+ return this._getCellText(aRow, aCol);
+ };
+
+ view._getImageSrc = view.getImageSrc;
+ view.getImageSrc =
+ function CSTH_View_getImageSrc(aRow, aCol)
+ {
+ var grippyRow = that.getGrippyRow();
+ if (aRow === grippyRow)
+ return "";
+ aRow = aRow < grippyRow ? aRow : aRow - 1;
+ return this._getImageSrc(aRow, aCol);
+ };
+
+ view.isContainer = function CSTH_View_isContainer(aRow) { return false; };
+ view.getParentIndex = function CSTH_View_getParentIndex(aRow) { return -1; };
+ view.getLevel = function CSTH_View_getLevel(aRow) { return 0; };
+ view.hasNextSibling = function CSTH_View_hasNextSibling(aRow, aAfterIndex)
+ {
+ return aRow < this.rowCount - 1;
+ };
+
+ return view;
+ }
+};
+#endif