Add Basilisk

1 files changed, 606 insertions, 0 deletions

diff --git a/application/basilisk/components/downloads/content/indicator.js b/application/basilisk/components/downloads/content/indicator.js
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+++ b/application/basilisk/components/downloads/content/indicator.js
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+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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/. */
+
+/**
+ * Handles the indicator that displays the progress of ongoing downloads, which
+ * is also used as the anchor for the downloads panel.
+ *
+ * This module includes the following constructors and global objects:
+ *
+ * DownloadsButton
+ * Main entry point for the downloads indicator.  Depending on how the toolbars
+ * have been customized, this object determines if we should show a fully
+ * functional indicator, a placeholder used during customization and in the
+ * customization palette, or a neutral view as a temporary anchor for the
+ * downloads panel.
+ *
+ * DownloadsIndicatorView
+ * Builds and updates the actual downloads status widget, responding to changes
+ * in the global status data, or provides a neutral view if the indicator is
+ * removed from the toolbars and only used as a temporary anchor.  In addition,
+ * handles the user interaction events raised by the widget.
+ */
+
+"use strict";
+
+////////////////////////////////////////////////////////////////////////////////
+//// DownloadsButton
+
+/**
+ * Main entry point for the downloads indicator.  Depending on how the toolbars
+ * have been customized, this object determines if we should show a fully
+ * functional indicator, a placeholder used during customization and in the
+ * customization palette, or a neutral view as a temporary anchor for the
+ * downloads panel.
+ */
+const DownloadsButton = {
+  /**
+   * Location of the indicator overlay.
+   */
+  get kIndicatorOverlay() {
+    return "chrome://browser/content/downloads/indicatorOverlay.xul";
+  },
+
+  /**
+   * Returns a reference to the downloads button position placeholder, or null
+   * if not available because it has been removed from the toolbars.
+   */
+  get _placeholder() {
+    return document.getElementById("downloads-button");
+  },
+
+  /**
+   * This function is called asynchronously just after window initialization.
+   *
+   * NOTE: This function should limit the input/output it performs to improve
+   *       startup time.
+   */
+  initializeIndicator() {
+    DownloadsIndicatorView.ensureInitialized();
+  },
+
+  /**
+   * Indicates whether toolbar customization is in progress.
+   */
+  _customizing: false,
+
+  /**
+   * This function is called when toolbar customization starts.
+   *
+   * During customization, we never show the actual download progress indication
+   * or the event notifications, but we show a neutral placeholder.  The neutral
+   * placeholder is an ordinary button defined in the browser window that can be
+   * moved freely between the toolbars and the customization palette.
+   */
+  customizeStart() {
+    // Prevent the indicator from being displayed as a temporary anchor
+    // during customization, even if requested using the getAnchor method.
+    this._customizing = true;
+    this._anchorRequested = false;
+  },
+
+  /**
+   * This function is called when toolbar customization ends.
+   */
+  customizeDone() {
+    this._customizing = false;
+    DownloadsIndicatorView.afterCustomize();
+  },
+
+  /**
+   * Determines the position where the indicator should appear, and moves its
+   * associated element to the new position.
+   *
+   * @return Anchor element, or null if the indicator is not visible.
+   */
+  _getAnchorInternal() {
+    let indicator = DownloadsIndicatorView.indicator;
+    if (!indicator) {
+      // Exit now if the indicator overlay isn't loaded yet, or if the button
+      // is not in the document.
+      return null;
+    }
+
+    indicator.open = this._anchorRequested;
+
+    let widget = CustomizableUI.getWidget("downloads-button")
+                               .forWindow(window);
+     // Determine if the indicator is located on an invisible toolbar.
+     if (!isElementVisible(indicator.parentNode) && !widget.overflowed) {
+       return null;
+     }
+
+    return DownloadsIndicatorView.indicatorAnchor;
+  },
+
+  /**
+   * Checks whether the indicator is, or will soon be visible in the browser
+   * window.
+   *
+   * @param aCallback
+   *        Called once the indicator overlay has loaded. Gets a boolean
+   *        argument representing the indicator visibility.
+   */
+  checkIsVisible(aCallback) {
+    DownloadsOverlayLoader.ensureOverlayLoaded(this.kIndicatorOverlay, () => {
+      if (!this._placeholder) {
+        aCallback(false);
+      } else {
+        let element = DownloadsIndicatorView.indicator || this._placeholder;
+        aCallback(isElementVisible(element.parentNode));
+      }
+    });
+  },
+
+  /**
+   * Indicates whether we should try and show the indicator temporarily as an
+   * anchor for the panel, even if the indicator would be hidden by default.
+   */
+  _anchorRequested: false,
+
+  /**
+   * Ensures that there is an anchor available for the panel.
+   *
+   * @param aCallback
+   *        Called when the anchor is available, passing the element where the
+   *        panel should be anchored, or null if an anchor is not available (for
+   *        example because both the tab bar and the navigation bar are hidden).
+   */
+  getAnchor(aCallback) {
+    // Do not allow anchoring the panel to the element while customizing.
+    if (this._customizing) {
+      aCallback(null);
+      return;
+    }
+
+    DownloadsOverlayLoader.ensureOverlayLoaded(this.kIndicatorOverlay, () => {
+      this._anchorRequested = true;
+      aCallback(this._getAnchorInternal());
+    });
+  },
+
+  /**
+   * Allows the temporary anchor to be hidden.
+   */
+  releaseAnchor() {
+    this._anchorRequested = false;
+    this._getAnchorInternal();
+  },
+
+  get _tabsToolbar() {
+    delete this._tabsToolbar;
+    return this._tabsToolbar = document.getElementById("TabsToolbar");
+  },
+
+  get _navBar() {
+    delete this._navBar;
+    return this._navBar = document.getElementById("nav-bar");
+  }
+};
+
+Object.defineProperty(this, "DownloadsButton", {
+  value: DownloadsButton,
+  enumerable: true,
+  writable: false
+});
+
+////////////////////////////////////////////////////////////////////////////////
+//// DownloadsIndicatorView
+
+/**
+ * Builds and updates the actual downloads status widget, responding to changes
+ * in the global status data, or provides a neutral view if the indicator is
+ * removed from the toolbars and only used as a temporary anchor.  In addition,
+ * handles the user interaction events raised by the widget.
+ */
+const DownloadsIndicatorView = {
+  /**
+   * True when the view is connected with the underlying downloads data.
+   */
+  _initialized: false,
+
+  /**
+   * True when the user interface elements required to display the indicator
+   * have finished loading in the browser window, and can be referenced.
+   */
+  _operational: false,
+
+  /**
+   * Prepares the downloads indicator to be displayed.
+   */
+  ensureInitialized() {
+    if (this._initialized) {
+      return;
+    }
+    this._initialized = true;
+
+    window.addEventListener("unload", this.onWindowUnload);
+    DownloadsCommon.getIndicatorData(window).addView(this);
+  },
+
+  /**
+   * Frees the internal resources related to the indicator.
+   */
+  ensureTerminated() {
+    if (!this._initialized) {
+      return;
+    }
+    this._initialized = false;
+
+    window.removeEventListener("unload", this.onWindowUnload);
+    DownloadsCommon.getIndicatorData(window).removeView(this);
+
+    // Reset the view properties, so that a neutral indicator is displayed if we
+    // are visible only temporarily as an anchor.
+    this.counter = "";
+    this.percentComplete = 0;
+    this.paused = false;
+    this.attention = DownloadsCommon.ATTENTION_NONE;
+  },
+
+  /**
+   * Ensures that the user interface elements required to display the indicator
+   * are loaded, then invokes the given callback.
+   */
+  _ensureOperational(aCallback) {
+    if (this._operational) {
+      if (aCallback) {
+        aCallback();
+      }
+      return;
+    }
+
+    // If we don't have a _placeholder, there's no chance that the overlay
+    // will load correctly: bail (and don't set _operational to true!)
+    if (!DownloadsButton._placeholder) {
+      return;
+    }
+
+    DownloadsOverlayLoader.ensureOverlayLoaded(
+      DownloadsButton.kIndicatorOverlay,
+      () => {
+        this._operational = true;
+
+        // If the view is initialized, we need to update the elements now that
+        // they are finally available in the document.
+        if (this._initialized) {
+          DownloadsCommon.getIndicatorData(window).refreshView(this);
+        }
+
+        if (aCallback) {
+          aCallback();
+        }
+      });
+  },
+
+  //////////////////////////////////////////////////////////////////////////////
+  //// Direct control functions
+
+  /**
+   * Set while we are waiting for a notification to fade out.
+   */
+  _notificationTimeout: null,
+
+  /**
+   * Check if the panel containing aNode is open.
+   * @param aNode
+   *        the node whose panel we're interested in.
+   */
+  _isAncestorPanelOpen(aNode) {
+    while (aNode && aNode.localName != "panel") {
+      aNode = aNode.parentNode;
+    }
+    return aNode && aNode.state == "open";
+  },
+
+  /**
+   * If the status indicator is visible in its assigned position, shows for a
+   * brief time a visual notification of a relevant event, like a new download.
+   *
+   * @param aType
+   *        Set to "start" for new downloads, "finish" for completed downloads.
+   */
+  showEventNotification(aType) {
+    if (!this._initialized) {
+      return;
+    }
+
+    if (!DownloadsCommon.animateNotifications) {
+      return;
+    }
+
+    // No need to show visual notification if the panel is visible.
+    if (DownloadsPanel.isPanelShowing) {
+      return;
+    }
+
+    let anchor = DownloadsButton._placeholder;
+    let widgetGroup = CustomizableUI.getWidget("downloads-button");
+    let widget = widgetGroup.forWindow(window);
+    if (widget.overflowed || widgetGroup.areaType == CustomizableUI.TYPE_MENU_PANEL) {
+      if (anchor && this._isAncestorPanelOpen(anchor)) {
+        // If the containing panel is open, don't do anything, because the
+        // notification would appear under the open panel. See
+        // https://bugzilla.mozilla.org/show_bug.cgi?id=984023
+        return;
+      }
+
+      // Otherwise, try to use the anchor of the panel:
+      anchor = widget.anchor;
+    }
+    if (!anchor || !isElementVisible(anchor.parentNode)) {
+      // Our container isn't visible, so can't show the animation:
+      return;
+    }
+
+    if (this._notificationTimeout) {
+      clearTimeout(this._notificationTimeout);
+    }
+
+    // The notification element is positioned to show in the same location as
+    // the downloads button. It's not in the downloads button itself in order to
+    // be able to anchor the notification elsewhere if required, and to ensure
+    // the notification isn't clipped by overflow properties of the anchor's
+    // container.
+    let notifier = this.notifier;
+    if (notifier.style.transform == '') {
+      let anchorRect = anchor.getBoundingClientRect();
+      let notifierRect = notifier.getBoundingClientRect();
+      let topDiff = anchorRect.top - notifierRect.top;
+      let leftDiff = anchorRect.left - notifierRect.left;
+      let heightDiff = anchorRect.height - notifierRect.height;
+      let widthDiff = anchorRect.width - notifierRect.width;
+      let translateX = (leftDiff + .5 * widthDiff) + "px";
+      let translateY = (topDiff + .5 * heightDiff) + "px";
+      notifier.style.transform = "translate(" +  translateX + ", " + translateY + ")";
+    }
+    notifier.setAttribute("notification", aType);
+    this._notificationTimeout = setTimeout(() => {
+      notifier.removeAttribute("notification");
+      notifier.style.transform = '';
+    }, 1000);
+  },
+
+  //////////////////////////////////////////////////////////////////////////////
+  //// Callback functions from DownloadsIndicatorData
+
+  /**
+   * Indicates whether the indicator should be shown because there are some
+   * downloads to be displayed.
+   */
+  set hasDownloads(aValue) {
+    if (this._hasDownloads != aValue || (!this._operational && aValue)) {
+      this._hasDownloads = aValue;
+
+      // If there is at least one download, ensure that the view elements are
+      if (aValue) {
+        this._ensureOperational();
+      }
+    }
+    return aValue;
+  },
+  get hasDownloads() {
+    return this._hasDownloads;
+  },
+  _hasDownloads: false,
+
+  /**
+   * Status text displayed in the indicator.  If this is set to an empty value,
+   * then the small downloads icon is displayed instead of the text.
+   */
+  set counter(aValue) {
+    if (!this._operational) {
+      return this._counter;
+    }
+
+    if (this._counter !== aValue) {
+      this._counter = aValue;
+      if (this._counter)
+        this.indicator.setAttribute("counter", "true");
+      else
+        this.indicator.removeAttribute("counter");
+      // We have to set the attribute instead of using the property because the
+      // XBL binding isn't applied if the element is invisible for any reason.
+      this._indicatorCounter.setAttribute("value", aValue);
+    }
+    return aValue;
+  },
+  _counter: null,
+
+  /**
+   * Progress indication to display, from 0 to 100, or -1 if unknown.  The
+   * progress bar is hidden if the current progress is unknown and no status
+   * text is set in the "counter" property.
+   */
+  set percentComplete(aValue) {
+    if (!this._operational) {
+      return this._percentComplete;
+    }
+
+    if (this._percentComplete !== aValue) {
+      this._percentComplete = aValue;
+      if (this._percentComplete >= 0)
+        this.indicator.setAttribute("progress", "true");
+      else
+        this.indicator.removeAttribute("progress");
+      // We have to set the attribute instead of using the property because the
+      // XBL binding isn't applied if the element is invisible for any reason.
+      this._indicatorProgress.setAttribute("value", Math.max(aValue, 0));
+    }
+    return aValue;
+  },
+  _percentComplete: null,
+
+  /**
+   * Indicates whether the progress won't advance because of a paused state.
+   * Setting this property forces a paused progress bar to be displayed, even if
+   * the current progress information is unavailable.
+   */
+  set paused(aValue) {
+    if (!this._operational) {
+      return this._paused;
+    }
+
+    if (this._paused != aValue) {
+      this._paused = aValue;
+      if (this._paused) {
+        this.indicator.setAttribute("paused", "true")
+      } else {
+        this.indicator.removeAttribute("paused");
+      }
+    }
+    return aValue;
+  },
+  _paused: false,
+
+  /**
+   * Set when the indicator should draw user attention to itself.
+   */
+  set attention(aValue) {
+    if (!this._operational) {
+      return this._attention;
+    }
+
+    if (this._attention != aValue) {
+      this._attention = aValue;
+
+      // Check if the downloads button is in the menu panel, to determine which
+      // button needs to get a badge.
+      let widgetGroup = CustomizableUI.getWidget("downloads-button");
+      let inMenu = widgetGroup.areaType == CustomizableUI.TYPE_MENU_PANEL;
+
+      if (aValue == DownloadsCommon.ATTENTION_NONE) {
+        this.indicator.removeAttribute("attention");
+        if (inMenu) {
+          gMenuButtonBadgeManager.removeBadge(gMenuButtonBadgeManager.BADGEID_DOWNLOAD);
+        }
+      } else {
+        this.indicator.setAttribute("attention", aValue);
+        if (inMenu) {
+          let badgeClass = "download-" + aValue;
+          gMenuButtonBadgeManager.addBadge(gMenuButtonBadgeManager.BADGEID_DOWNLOAD, badgeClass);
+        }
+      }
+    }
+    return aValue;
+  },
+  _attention: DownloadsCommon.ATTENTION_NONE,
+
+  //////////////////////////////////////////////////////////////////////////////
+  //// User interface event functions
+
+  onWindowUnload() {
+    // This function is registered as an event listener, we can't use "this".
+    DownloadsIndicatorView.ensureTerminated();
+  },
+
+  onCommand(aEvent) {
+    // If the downloads button is in the menu panel, open the Library
+    let widgetGroup = CustomizableUI.getWidget("downloads-button");
+    if (widgetGroup.areaType == CustomizableUI.TYPE_MENU_PANEL) {
+      DownloadsPanel.showDownloadsHistory();
+    } else {
+      DownloadsPanel.showPanel();
+    }
+
+    aEvent.stopPropagation();
+  },
+
+  onDragOver(aEvent) {
+    browserDragAndDrop.dragOver(aEvent);
+  },
+
+  onDrop(aEvent) {
+    let dt = aEvent.dataTransfer;
+    // If dragged item is from our source, do not try to
+    // redownload already downloaded file.
+    if (dt.mozGetDataAt("application/x-moz-file", 0))
+      return;
+
+    let links = browserDragAndDrop.dropLinks(aEvent);
+    if (!links.length)
+      return;
+    let sourceDoc = dt.mozSourceNode ? dt.mozSourceNode.ownerDocument : document;
+    let handled = false;
+    for (let link of links) {
+      if (link.url.startsWith("about:"))
+        continue;
+      saveURL(link.url, link.name, null, true, true, null, sourceDoc);
+      handled = true;
+    }
+    if (handled) {
+      aEvent.preventDefault();
+    }
+  },
+
+  _indicator: null,
+  __indicatorCounter: null,
+  __indicatorProgress: null,
+
+  /**
+   * Returns a reference to the main indicator element, or null if the element
+   * is not present in the browser window yet.
+   */
+  get indicator() {
+    if (this._indicator) {
+      return this._indicator;
+    }
+
+    let indicator = document.getElementById("downloads-button");
+    if (!indicator || indicator.getAttribute("indicator") != "true") {
+      return null;
+    }
+
+    return this._indicator = indicator;
+  },
+
+  get indicatorAnchor() {
+    let widget = CustomizableUI.getWidget("downloads-button")
+                               .forWindow(window);
+    if (widget.overflowed) {
+      return widget.anchor;
+    }
+    return document.getElementById("downloads-indicator-anchor");
+  },
+
+  get _indicatorCounter() {
+    return this.__indicatorCounter ||
+      (this.__indicatorCounter = document.getElementById("downloads-indicator-counter"));
+  },
+
+  get _indicatorProgress() {
+    return this.__indicatorProgress ||
+      (this.__indicatorProgress = document.getElementById("downloads-indicator-progress"));
+  },
+
+  get notifier() {
+    return this._notifier ||
+      (this._notifier = document.getElementById("downloads-notification-anchor"));
+  },
+
+  _onCustomizedAway() {
+    this._indicator = null;
+    this.__indicatorCounter = null;
+    this.__indicatorProgress = null;
+  },
+
+  afterCustomize() {
+    // If the cached indicator is not the one currently in the document,
+    // invalidate our references
+    if (this._indicator != document.getElementById("downloads-button")) {
+      this._onCustomizedAway();
+      this._operational = false;
+      this.ensureTerminated();
+      this.ensureInitialized();
+    }
+  },
+};
+
+Object.defineProperty(this, "DownloadsIndicatorView", {
+  value: DownloadsIndicatorView,
+  enumerable: true,
+  writable: false
+});