Remove Pale Moon from the Unified XUL Platform repository

Development will proceed at https://github.com/MoonchildProductions/Pale-Moon

1 files changed, 0 insertions, 1058 deletions

diff --git a/application/palemoon/base/content/browser-tabPreviews.js b/application/palemoon/base/content/browser-tabPreviews.js
deleted file mode 100644
index e0755b81d..000000000
--- a/application/palemoon/base/content/browser-tabPreviews.js
+++ /dev/null
@@ -1,1058 +0,0 @@
-/*
-#ifdef 0
- * 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/.
-#endif
- */
-
-/**
- * Tab previews utility, produces thumbnails
- */
-var tabPreviews = {
-  aspectRatio: 0.5625, // 16:9
-
-  get width() {
-    delete this.width;
-    return this.width = Math.ceil(screen.availWidth / 5.75);
-  },
-
-  get height() {
-    delete this.height;
-    return this.height = Math.round(this.width * this.aspectRatio);
-  },
-
-  init: function tabPreviews_init() {
-    if (this._selectedTab)
-      return;
-    this._selectedTab = gBrowser.selectedTab;
-
-    gBrowser.tabContainer.addEventListener("TabSelect", this, false);
-    gBrowser.tabContainer.addEventListener("SSTabRestored", this, false);
-  },
-
-  get: function tabPreviews_get(aTab) {
-    let uri = aTab.linkedBrowser.currentURI.spec;
-
-    if (aTab.__thumbnail_lastURI &&
-        aTab.__thumbnail_lastURI != uri) {
-      aTab.__thumbnail = null;
-      aTab.__thumbnail_lastURI = null;
-    }
-
-    if (aTab.__thumbnail)
-      return aTab.__thumbnail;
-
-    if (aTab.getAttribute("pending") == "true") {
-      let img = new Image;
-      img.src = PageThumbs.getThumbnailURL(uri);
-      return img;
-    }
-
-    return this.capture(aTab, !aTab.hasAttribute("busy"));
-  },
-
-  capture: function tabPreviews_capture(aTab, aStore) {
-    var thumbnail = document.createElementNS("http://www.w3.org/1999/xhtml", "canvas");
-    thumbnail.mozOpaque = true;
-    thumbnail.height = this.height;
-    thumbnail.width = this.width;
-
-    var ctx = thumbnail.getContext("2d");
-    var win = aTab.linkedBrowser.contentWindow;
-    var snippetWidth = win.innerWidth * .6;
-    var scale = this.width / snippetWidth;
-    ctx.scale(scale, scale);
-    ctx.drawWindow(win, win.scrollX, win.scrollY,
-                   snippetWidth, snippetWidth * this.aspectRatio, "rgb(255,255,255)");
-
-    if (aStore &&
-        aTab.linkedBrowser /* bug 795608: the tab may got removed while drawing the thumbnail */) {
-      aTab.__thumbnail = thumbnail;
-      aTab.__thumbnail_lastURI = aTab.linkedBrowser.currentURI.spec;
-    }
-
-    return thumbnail;
-  },
-
-  handleEvent: function tabPreviews_handleEvent(event) {
-    switch (event.type) {
-      case "TabSelect":
-        if (this._selectedTab &&
-            this._selectedTab.parentNode &&
-            !this._pendingUpdate) {
-          // Generate a thumbnail for the tab that was selected.
-          // The timeout keeps the UI snappy and prevents us from generating thumbnails
-          // for tabs that will be closed. During that timeout, don't generate other
-          // thumbnails in case multiple TabSelect events occur fast in succession.
-          this._pendingUpdate = true;
-          setTimeout(function (self, aTab) {
-            self._pendingUpdate = false;
-            if (aTab.parentNode &&
-                !aTab.hasAttribute("busy") &&
-                !aTab.hasAttribute("pending"))
-              self.capture(aTab, true);
-          }, 2000, this, this._selectedTab);
-        }
-        this._selectedTab = event.target;
-        break;
-      case "SSTabRestored":
-        this.capture(event.target, true);
-        break;
-    }
-  }
-};
-
-var tabPreviewPanelHelper = {
-  opening: function (host) {
-    host.panel.hidden = false;
-
-    var handler = this._generateHandler(host);
-    host.panel.addEventListener("popupshown", handler, false);
-    host.panel.addEventListener("popuphiding", handler, false);
-
-    host._prevFocus = document.commandDispatcher.focusedElement;
-  },
-  _generateHandler: function (host) {
-    var self = this;
-    return function (event) {
-      if (event.target == host.panel) {
-        host.panel.removeEventListener(event.type, arguments.callee, false);
-        self["_" + event.type](host);
-      }
-    };
-  },
-  _popupshown: function (host) {
-    if ("setupGUI" in host)
-      host.setupGUI();
-  },
-  _popuphiding: function (host) {
-    if ("suspendGUI" in host)
-      host.suspendGUI();
-
-    if (host._prevFocus) {
-      Cc["@mozilla.org/focus-manager;1"]
-        .getService(Ci.nsIFocusManager)
-        .setFocus(host._prevFocus, Ci.nsIFocusManager.FLAG_NOSCROLL);
-      host._prevFocus = null;
-    } else
-      gBrowser.selectedBrowser.focus();
-
-    if (host.tabToSelect) {
-      gBrowser.selectedTab = host.tabToSelect;
-      host.tabToSelect = null;
-    }
-  }
-};
-
-/**
- * Ctrl-Tab panel
- */
-var ctrlTab = {
-  get panel () {
-    delete this.panel;
-    return this.panel = document.getElementById("ctrlTab-panel");
-  },
-  get showAllButton () {
-    delete this.showAllButton;
-    return this.showAllButton = document.getElementById("ctrlTab-showAll");
-  },
-  get previews () {
-    delete this.previews;
-    return this.previews = this.panel.getElementsByClassName("ctrlTab-preview");
-  },
-  get recentlyUsedLimit () {
-    delete this.recentlyUsedLimit;
-    return this.recentlyUsedLimit = gPrefService.getIntPref("browser.ctrlTab.recentlyUsedLimit");
-  },
-  get keys () {
-    var keys = {};
-    ["close", "find", "selectAll"].forEach(function (key) {
-      keys[key] = document.getElementById("key_" + key)
-                          .getAttribute("key")
-                          .toLocaleLowerCase().charCodeAt(0);
-    });
-    delete this.keys;
-    return this.keys = keys;
-  },
-  _selectedIndex: 0,
-  get selected () this._selectedIndex < 0 ?
-                    document.activeElement :
-                    this.previews.item(this._selectedIndex),
-  get isOpen   () this.panel.state == "open" || this.panel.state == "showing" || this._timer,
-  get tabCount () this.tabList.length,
-  get tabPreviewCount () Math.min(this.previews.length - 1, this.tabCount),
-  get canvasWidth () Math.min(tabPreviews.width,
-                              Math.ceil(screen.availWidth * .85 / this.tabPreviewCount)),
-  get canvasHeight () Math.round(this.canvasWidth * tabPreviews.aspectRatio),
-
-  get tabList () {
-    if (this._tabList)
-      return this._tabList;
-
-    // Using gBrowser.tabs instead of gBrowser.visibleTabs, as the latter
-    // exlcudes closing tabs, breaking the following loop in case the the
-    // selected tab is closing.
-    let list = Array.filter(gBrowser.tabs, function (tab) !tab.hidden);
-
-    // Rotate the list until the selected tab is first
-    while (!list[0].selected)
-      list.push(list.shift());
-
-    list = list.filter(function (tab) !tab.closing);
-
-    if (this.recentlyUsedLimit != 0) {
-      let recentlyUsedTabs = [];
-      for (let tab of this._recentlyUsedTabs) {
-        if (!tab.hidden && !tab.closing) {
-          recentlyUsedTabs.push(tab);
-          if (this.recentlyUsedLimit > 0 && recentlyUsedTabs.length >= this.recentlyUsedLimit)
-            break;
-        }
-      }
-      for (let i = recentlyUsedTabs.length - 1; i >= 0; i--) {
-        list.splice(list.indexOf(recentlyUsedTabs[i]), 1);
-        list.unshift(recentlyUsedTabs[i]);
-      }
-    }
-
-    return this._tabList = list;
-  },
-
-  init: function ctrlTab_init() {
-    if (!this._recentlyUsedTabs) {
-      tabPreviews.init();
-
-      this._recentlyUsedTabs = [gBrowser.selectedTab];
-      this._init(true);
-    }
-  },
-
-  uninit: function ctrlTab_uninit() {
-    this._recentlyUsedTabs = null;
-    this._init(false);
-  },
-
-  prefName: "browser.ctrlTab.previews",
-  readPref: function ctrlTab_readPref() {
-    var enable =
-      gPrefService.getBoolPref(this.prefName) &&
-      (!gPrefService.prefHasUserValue("browser.ctrlTab.disallowForScreenReaders") ||
-       !gPrefService.getBoolPref("browser.ctrlTab.disallowForScreenReaders"));
-
-    if (enable)
-      this.init();
-    else
-      this.uninit();
-  },
-  observe: function (aSubject, aTopic, aPrefName) {
-    this.readPref();
-  },
-
-  updatePreviews: function ctrlTab_updatePreviews() {
-    for (let i = 0; i < this.previews.length; i++)
-      this.updatePreview(this.previews[i], this.tabList[i]);
-
-    var showAllLabel = gNavigatorBundle.getString("ctrlTab.showAll.label");
-    this.showAllButton.label =
-      PluralForm.get(this.tabCount, showAllLabel).replace("#1", this.tabCount);
-  },
-
-  updatePreview: function ctrlTab_updatePreview(aPreview, aTab) {
-    if (aPreview == this.showAllButton)
-      return;
-
-    aPreview._tab = aTab;
-
-    if (aPreview.firstChild)
-      aPreview.removeChild(aPreview.firstChild);
-    if (aTab) {
-      let canvasWidth = this.canvasWidth;
-      let canvasHeight = this.canvasHeight;
-      aPreview.appendChild(tabPreviews.get(aTab));
-      aPreview.setAttribute("label", aTab.label);
-      aPreview.setAttribute("tooltiptext", aTab.label);
-      aPreview.setAttribute("crop", aTab.crop);
-      aPreview.setAttribute("canvaswidth", canvasWidth);
-      aPreview.setAttribute("canvasstyle",
-                            "max-width:" + canvasWidth + "px;" +
-                            "min-width:" + canvasWidth + "px;" +
-                            "max-height:" + canvasHeight + "px;" +
-                            "min-height:" + canvasHeight + "px;");
-      if (aTab.image)
-        aPreview.setAttribute("image", aTab.image);
-      else
-        aPreview.removeAttribute("image");
-      aPreview.hidden = false;
-    } else {
-      aPreview.hidden = true;
-      aPreview.removeAttribute("label");
-      aPreview.removeAttribute("tooltiptext");
-      aPreview.removeAttribute("image");
-    }
-  },
-
-  advanceFocus: function ctrlTab_advanceFocus(aForward) {
-    let selectedIndex = Array.indexOf(this.previews, this.selected);
-    do {
-      selectedIndex += aForward ? 1 : -1;
-      if (selectedIndex < 0)
-        selectedIndex = this.previews.length - 1;
-      else if (selectedIndex >= this.previews.length)
-        selectedIndex = 0;
-    } while (this.previews[selectedIndex].hidden);
-
-    if (this._selectedIndex == -1) {
-      // Focus is already in the panel.
-      this.previews[selectedIndex].focus();
-    } else {
-      this._selectedIndex = selectedIndex;
-    }
-
-    if (this._timer) {
-      clearTimeout(this._timer);
-      this._timer = null;
-      this._openPanel();
-    }
-  },
-
-  _mouseOverFocus: function ctrlTab_mouseOverFocus(aPreview) {
-    if (this._trackMouseOver)
-      aPreview.focus();
-  },
-
-  pick: function ctrlTab_pick(aPreview) {
-    if (!this.tabCount)
-      return;
-
-    var select = (aPreview || this.selected);
-
-    if (select == this.showAllButton)
-      this.showAllTabs();
-    else
-      this.close(select._tab);
-  },
-
-  showAllTabs: function ctrlTab_showAllTabs(aPreview) {
-    this.close();
-    document.getElementById("Browser:ShowAllTabs").doCommand();
-  },
-
-  remove: function ctrlTab_remove(aPreview) {
-    if (aPreview._tab)
-      gBrowser.removeTab(aPreview._tab);
-  },
-
-  attachTab: function ctrlTab_attachTab(aTab, aPos) {
-    if (aPos == 0)
-      this._recentlyUsedTabs.unshift(aTab);
-    else if (aPos)
-      this._recentlyUsedTabs.splice(aPos, 0, aTab);
-    else
-      this._recentlyUsedTabs.push(aTab);
-  },
-  detachTab: function ctrlTab_detachTab(aTab) {
-    var i = this._recentlyUsedTabs.indexOf(aTab);
-    if (i >= 0)
-      this._recentlyUsedTabs.splice(i, 1);
-  },
-
-  open: function ctrlTab_open() {
-    if (this.isOpen)
-      return;
-
-    allTabs.close();
-
-    document.addEventListener("keyup", this, true);
-
-    this.updatePreviews();
-    this._selectedIndex = 1;
-
-    // Add a slight delay before showing the UI, so that a quick
-    // "ctrl-tab" keypress just flips back to the MRU tab.
-    this._timer = setTimeout(function (self) {
-      self._timer = null;
-      self._openPanel();
-    }, 200, this);
-  },
-
-  _openPanel: function ctrlTab_openPanel() {
-    tabPreviewPanelHelper.opening(this);
-
-    this.panel.width = Math.min(screen.availWidth * .99,
-                                this.canvasWidth * 1.25 * this.tabPreviewCount);
-    var estimateHeight = this.canvasHeight * 1.25 + 75;
-    this.panel.openPopupAtScreen(screen.availLeft + (screen.availWidth - this.panel.width) / 2,
-                                 screen.availTop + (screen.availHeight - estimateHeight) / 2,
-                                 false);
-  },
-
-  close: function ctrlTab_close(aTabToSelect) {
-    if (!this.isOpen)
-      return;
-
-    if (this._timer) {
-      clearTimeout(this._timer);
-      this._timer = null;
-      this.suspendGUI();
-      if (aTabToSelect)
-        gBrowser.selectedTab = aTabToSelect;
-      return;
-    }
-
-    this.tabToSelect = aTabToSelect;
-    this.panel.hidePopup();
-  },
-
-  setupGUI: function ctrlTab_setupGUI() {
-    this.selected.focus();
-    this._selectedIndex = -1;
-
-    // Track mouse movement after a brief delay so that the item that happens
-    // to be under the mouse pointer initially won't be selected unintentionally.
-    this._trackMouseOver = false;
-    setTimeout(function (self) {
-      if (self.isOpen)
-        self._trackMouseOver = true;
-    }, 0, this);
-  },
-
-  suspendGUI: function ctrlTab_suspendGUI() {
-    document.removeEventListener("keyup", this, true);
-
-    Array.forEach(this.previews, function (preview) {
-      this.updatePreview(preview, null);
-    }, this);
-
-    this._tabList = null;
-  },
-
-  onKeyPress: function ctrlTab_onKeyPress(event) {
-    var isOpen = this.isOpen;
-
-    if (isOpen) {
-      event.preventDefault();
-      event.stopPropagation();
-    }
-
-    switch (event.keyCode) {
-      case event.DOM_VK_TAB:
-        if (event.ctrlKey && !event.altKey && !event.metaKey) {
-          if (isOpen) {
-            this.advanceFocus(!event.shiftKey);
-          } else if (!event.shiftKey) {
-            event.preventDefault();
-            event.stopPropagation();
-            let tabs = gBrowser.visibleTabs;
-            if (tabs.length > 2) {
-              this.open();
-            } else if (tabs.length == 2) {
-              let index = tabs[0].selected ? 1 : 0;
-              gBrowser.selectedTab = tabs[index];
-            }
-          }
-        }
-        break;
-      default:
-        if (isOpen && event.ctrlKey) {
-          if (event.keyCode == event.DOM_VK_DELETE) {
-            this.remove(this.selected);
-            break;
-          }
-          switch (event.charCode) {
-            case this.keys.close:
-              this.remove(this.selected);
-              break;
-            case this.keys.find:
-            case this.keys.selectAll:
-              this.showAllTabs();
-              break;
-          }
-        }
-    }
-  },
-
-  removeClosingTabFromUI: function ctrlTab_removeClosingTabFromUI(aTab) {
-    if (this.tabCount == 2) {
-      this.close();
-      return;
-    }
-
-    this._tabList = null;
-    this.updatePreviews();
-
-    if (this.selected.hidden)
-      this.advanceFocus(false);
-    if (this.selected == this.showAllButton)
-      this.advanceFocus(false);
-
-    // If the current tab is removed, another tab can steal our focus.
-    if (aTab.selected && this.panel.state == "open") {
-      setTimeout(function (selected) {
-        selected.focus();
-      }, 0, this.selected);
-    }
-  },
-
-  handleEvent: function ctrlTab_handleEvent(event) {
-    switch (event.type) {
-      case "TabAttrModified":
-        // tab attribute modified (e.g. label, crop, busy, image, selected)
-        for (let i = this.previews.length - 1; i >= 0; i--) {
-          if (this.previews[i]._tab && this.previews[i]._tab == event.target) {
-            this.updatePreview(this.previews[i], event.target);
-            break;
-          }
-        }
-        break;
-      case "TabSelect":
-        this.detachTab(event.target);
-        this.attachTab(event.target, 0);
-        break;
-      case "TabOpen":
-        this.attachTab(event.target, 1);
-        break;
-      case "TabClose":
-        this.detachTab(event.target);
-        if (this.isOpen)
-          this.removeClosingTabFromUI(event.target);
-        break;
-      case "keypress":
-        this.onKeyPress(event);
-        break;
-      case "keyup":
-        if (event.keyCode == event.DOM_VK_CONTROL)
-          this.pick();
-        break;
-    }
-  },
-
-  _init: function ctrlTab__init(enable) {
-    var toggleEventListener = enable ? "addEventListener" : "removeEventListener";
-
-    var tabContainer = gBrowser.tabContainer;
-    tabContainer[toggleEventListener]("TabOpen", this, false);
-    tabContainer[toggleEventListener]("TabAttrModified", this, false);
-    tabContainer[toggleEventListener]("TabSelect", this, false);
-    tabContainer[toggleEventListener]("TabClose", this, false);
-
-    document[toggleEventListener]("keypress", this, false);
-    gBrowser.mTabBox.handleCtrlTab = !enable;
-
-    // If we're not running, hide the "Show All Tabs" menu item,
-    // as Shift+Ctrl+Tab will be handled by the tab bar.
-    document.getElementById("menu_showAllTabs").hidden = !enable;
-
-    // Also disable the <key> to ensure Shift+Ctrl+Tab never triggers
-    // Show All Tabs.
-    var key_showAllTabs = document.getElementById("key_showAllTabs");
-    if (enable)
-      key_showAllTabs.removeAttribute("disabled");
-    else
-      key_showAllTabs.setAttribute("disabled", "true");
-  }
-};
-
-
-/**
- * All Tabs panel
- */
-var allTabs = {
-  get panel () {
-    delete this.panel;
-    return this.panel = document.getElementById("allTabs-panel");
-  },
-  get filterField () {
-    delete this.filterField;
-    return this.filterField = document.getElementById("allTabs-filter");
-  },
-  get container () {
-    delete this.container;
-    return this.container = document.getElementById("allTabs-container");
-  },
-  get tabCloseButton () {
-    delete this.tabCloseButton;
-    return this.tabCloseButton = document.getElementById("allTabs-tab-close-button");
-  },
-  get toolbarButton() document.getElementById("alltabs-button"),
-  get previews () this.container.getElementsByClassName("allTabs-preview"),
-  get isOpen () this.panel.state == "open" || this.panel.state == "showing",
-
-  init: function allTabs_init() {
-    if (this._initiated)
-      return;
-    this._initiated = true;
-
-    tabPreviews.init();
-
-    Array.forEach(gBrowser.tabs, function (tab) {
-      this._addPreview(tab);
-    }, this);
-
-    gBrowser.tabContainer.addEventListener("TabOpen", this, false);
-    gBrowser.tabContainer.addEventListener("TabAttrModified", this, false);
-    gBrowser.tabContainer.addEventListener("TabMove", this, false);
-    gBrowser.tabContainer.addEventListener("TabClose", this, false);
-  },
-
-  uninit: function allTabs_uninit() {
-    if (!this._initiated)
-      return;
-
-    gBrowser.tabContainer.removeEventListener("TabOpen", this, false);
-    gBrowser.tabContainer.removeEventListener("TabAttrModified", this, false);
-    gBrowser.tabContainer.removeEventListener("TabMove", this, false);
-    gBrowser.tabContainer.removeEventListener("TabClose", this, false);
-
-    while (this.container.hasChildNodes())
-      this.container.removeChild(this.container.firstChild);
-
-    this._initiated = false;
-  },
-
-  prefName: "browser.allTabs.previews",
-  readPref: function allTabs_readPref() {
-    var allTabsButton = this.toolbarButton;
-    if (!allTabsButton)
-      return;
-
-    if (gPrefService.getBoolPref(this.prefName)) {
-      allTabsButton.removeAttribute("type");
-      allTabsButton.setAttribute("command", "Browser:ShowAllTabs");
-    } else {
-      allTabsButton.setAttribute("type", "menu");
-      allTabsButton.removeAttribute("command");
-      allTabsButton.removeAttribute("oncommand");
-    }
-  },
-  observe: function (aSubject, aTopic, aPrefName) {
-    this.readPref();
-  },
-
-  pick: function allTabs_pick(aPreview) {
-    if (!aPreview)
-      aPreview = this._firstVisiblePreview;
-    if (aPreview)
-      this.tabToSelect = aPreview._tab;
-
-    this.close();
-  },
-
-  closeTab: function allTabs_closeTab(event) {
-    this.filterField.focus();
-    gBrowser.removeTab(event.currentTarget._targetPreview._tab);
-  },
-
-  filter: function allTabs_filter() {
-    if (this._currentFilter == this.filterField.value)
-      return;
-
-    this._currentFilter = this.filterField.value;
-
-    var filter = this._currentFilter.split(/\s+/g);
-    this._visible = 0;
-    Array.forEach(this.previews, function (preview) {
-      var tab = preview._tab;
-      var matches = 0;
-      if (filter.length && !tab.hidden) {
-        let tabstring = tab.linkedBrowser.currentURI.spec;
-        try {
-          tabstring = decodeURI(tabstring);
-        } catch (e) {}
-        tabstring = tab.label + " " + tab.label.toLocaleLowerCase() + " " + tabstring;
-        for (let i = 0; i < filter.length; i++)
-          matches += tabstring.includes(filter[i]);
-      }
-      if (matches < filter.length || tab.hidden) {
-        preview.hidden = true;
-      }
-      else {
-        this._visible++;
-        this._updatePreview(preview);
-        preview.hidden = false;
-      }
-    }, this);
-
-    this._reflow();
-  },
-
-  open: function allTabs_open() {
-    var allTabsButton = this.toolbarButton;
-    if (allTabsButton &&
-        allTabsButton.getAttribute("type") == "menu") {
-      // Without setTimeout, the menupopup won't stay open when invoking
-      // "View > Show All Tabs" and the menu bar auto-hides.
-      setTimeout(function () {
-        allTabsButton.open = true;
-      }, 0);
-      return;
-    }
-
-    this.init();
-
-    if (this.isOpen)
-      return;
-
-    this._maxPanelHeight = Math.max(gBrowser.clientHeight, screen.availHeight / 2);
-    this._maxPanelWidth = Math.max(gBrowser.clientWidth, screen.availWidth / 2);
-
-    this.filter();
-
-    tabPreviewPanelHelper.opening(this);
-
-    this.panel.popupBoxObject.setConsumeRollupEvent(PopupBoxObject.ROLLUP_NO_CONSUME);
-    this.panel.openPopup(gBrowser, "overlap", 0, 0, false, true);
-  },
-
-  close: function allTabs_close() {
-    this.panel.hidePopup();
-  },
-
-  setupGUI: function allTabs_setupGUI() {
-    this.filterField.focus();
-    this.filterField.placeholder = this.filterField.tooltipText;
-
-    this.panel.addEventListener("keypress", this, false);
-    this.panel.addEventListener("keypress", this, true);
-    this._browserCommandSet.addEventListener("command", this, false);
-
-    // When the panel is open, a second click on the all tabs button should
-    // close the panel but not re-open it.
-    document.getElementById("Browser:ShowAllTabs").setAttribute("disabled", "true");
-  },
-
-  suspendGUI: function allTabs_suspendGUI() {
-    this.filterField.placeholder = "";
-    this.filterField.value = "";
-    this._currentFilter = null;
-
-    this._updateTabCloseButton();
-
-    this.panel.removeEventListener("keypress", this, false);
-    this.panel.removeEventListener("keypress", this, true);
-    this._browserCommandSet.removeEventListener("command", this, false);
-
-    setTimeout(function () {
-      document.getElementById("Browser:ShowAllTabs").removeAttribute("disabled");
-    }, 300);
-  },
-
-  handleEvent: function allTabs_handleEvent(event) {
-    if (event.type.startsWith("Tab")) {
-      var tab = event.target;
-      if (event.type != "TabOpen")
-        var preview = this._getPreview(tab);
-    }
-    switch (event.type) {
-      case "TabAttrModified":
-        // tab attribute modified (e.g. label, crop, busy, image)
-        if (!preview.hidden)
-          this._updatePreview(preview);
-        break;
-      case "TabOpen":
-        if (this.isOpen)
-          this.close();
-        this._addPreview(tab);
-        break;
-      case "TabMove":
-        let siblingPreview = tab.nextSibling &&
-                             this._getPreview(tab.nextSibling);
-        if (siblingPreview)
-          siblingPreview.parentNode.insertBefore(preview, siblingPreview);
-        else
-          this.container.lastChild.appendChild(preview);
-        if (this.isOpen && !preview.hidden) {
-          this._reflow();
-          preview.focus();
-        }
-        break;
-      case "TabClose":
-        this._removePreview(preview);
-        break;
-      case "keypress":
-        this._onKeyPress(event);
-        break;
-      case "command":
-        if (event.target.id != "Browser:ShowAllTabs") {
-          // Close the panel when there's a browser command executing in the background.
-          this.close();
-        }
-        break;
-    }
-  },
-
-  _visible: 0,
-  _currentFilter: null,
-  get _stack () {
-    delete this._stack;
-    return this._stack = document.getElementById("allTabs-stack");
-  },
-  get _browserCommandSet () {
-    delete this._browserCommandSet;
-    return this._browserCommandSet = document.getElementById("mainCommandSet");
-  },
-  get _previewLabelHeight () {
-    delete this._previewLabelHeight;
-    return this._previewLabelHeight = parseInt(getComputedStyle(this.previews[0], "").lineHeight);
-  },
-
-  get _visiblePreviews ()
-    Array.filter(this.previews, function (preview) !preview.hidden),
-
-  get _firstVisiblePreview () {
-    if (this._visible == 0)
-      return null;
-    var previews = this.previews;
-    for (let i = 0; i < previews.length; i++) {
-      if (!previews[i].hidden)
-        return previews[i];
-    }
-    return null;
-  },
-
-  _reflow: function allTabs_reflow() {
-    this._updateTabCloseButton();
-
-    const CONTAINER_MAX_WIDTH = this._maxPanelWidth * .95;
-    const CONTAINER_MAX_HEIGHT = this._maxPanelHeight - 35;
-    // the size of the whole preview relative to the thumbnail
-    const REL_PREVIEW_THUMBNAIL = 1.2;
-    const REL_PREVIEW_HEIGHT_WIDTH = tabPreviews.height / tabPreviews.width;
-    const PREVIEW_MAX_WIDTH = tabPreviews.width * REL_PREVIEW_THUMBNAIL;
-
-    var rows, previewHeight, previewWidth, outerHeight;
-    this._columns = Math.floor(CONTAINER_MAX_WIDTH / PREVIEW_MAX_WIDTH);
-    do {
-      rows = Math.ceil(this._visible / this._columns);
-      previewWidth = Math.min(PREVIEW_MAX_WIDTH,
-                              Math.round(CONTAINER_MAX_WIDTH / this._columns));
-      previewHeight = Math.round(previewWidth * REL_PREVIEW_HEIGHT_WIDTH);
-      outerHeight = previewHeight + this._previewLabelHeight;
-    } while (rows * outerHeight > CONTAINER_MAX_HEIGHT && ++this._columns);
-
-    var outerWidth = previewWidth;
-    {
-      let innerWidth = Math.ceil(previewWidth / REL_PREVIEW_THUMBNAIL);
-      let innerHeight = Math.ceil(previewHeight / REL_PREVIEW_THUMBNAIL);
-      var canvasStyle = "max-width:" + innerWidth + "px;" +
-                        "min-width:" + innerWidth + "px;" +
-                        "max-height:" + innerHeight + "px;" +
-                        "min-height:" + innerHeight + "px;";
-    }
-
-    var previews = Array.slice(this.previews);
-
-    while (this.container.hasChildNodes())
-      this.container.removeChild(this.container.firstChild);
-    for (let i = rows || 1; i > 0; i--)
-      this.container.appendChild(document.createElement("hbox"));
-
-    var row = this.container.firstChild;
-    var colCount = 0;
-    previews.forEach(function (preview) {
-      if (!preview.hidden &&
-          ++colCount > this._columns) {
-        row = row.nextSibling;
-        colCount = 1;
-      }
-      preview.setAttribute("minwidth", outerWidth);
-      preview.setAttribute("height", outerHeight);
-      preview.setAttribute("canvasstyle", canvasStyle);
-      preview.removeAttribute("closebuttonhover");
-      row.appendChild(preview);
-    }, this);
-
-    this._stack.width = this._maxPanelWidth;
-    this.container.width = Math.ceil(outerWidth * Math.min(this._columns, this._visible));
-    this.container.left = Math.round((this._maxPanelWidth - this.container.width) / 2);
-    this.container.maxWidth = this._maxPanelWidth - this.container.left;
-    this.container.maxHeight = rows * outerHeight;
-  },
-
-  _addPreview: function allTabs_addPreview(aTab) {
-    var preview = document.createElement("button");
-    preview.className = "allTabs-preview";
-    preview._tab = aTab;
-    this.container.lastChild.appendChild(preview);
-  },
-
-  _removePreview: function allTabs_removePreview(aPreview) {
-    var updateUI = (this.isOpen && !aPreview.hidden);
-    aPreview._tab = null;
-    aPreview.parentNode.removeChild(aPreview);
-    if (updateUI) {
-      this._visible--;
-      this._reflow();
-      this.filterField.focus();
-    }
-  },
-
-  _getPreview: function allTabs_getPreview(aTab) {
-    var previews = this.previews;
-    for (let i = 0; i < previews.length; i++)
-      if (previews[i]._tab == aTab)
-        return previews[i];
-    return null;
-  },
-
-  _updateTabCloseButton: function allTabs_updateTabCloseButton(event) {
-    if (event && event.target == this.tabCloseButton)
-      return;
-
-    if (this.tabCloseButton._targetPreview) {
-      if (event && event.target == this.tabCloseButton._targetPreview)
-        return;
-
-      this.tabCloseButton._targetPreview.removeAttribute("closebuttonhover");
-    }
-
-    if (event &&
-        event.target.parentNode.parentNode == this.container &&
-        (event.target._tab.previousSibling || event.target._tab.nextSibling)) {
-      let canvas = event.target.firstChild.getBoundingClientRect();
-      let container = this.container.getBoundingClientRect();
-      let tabCloseButton = this.tabCloseButton.getBoundingClientRect();
-      let alignLeft = getComputedStyle(this.panel, "").direction == "rtl";
-#ifdef XP_MACOSX
-      alignLeft = !alignLeft;
-#endif
-      this.tabCloseButton.left = canvas.left -
-                                 container.left +
-                                 parseInt(this.container.left) +
-                                 (alignLeft ? 0 :
-                                  canvas.width - tabCloseButton.width);
-      this.tabCloseButton.top = canvas.top - container.top;
-      this.tabCloseButton._targetPreview = event.target;
-      this.tabCloseButton.style.visibility = "visible";
-      event.target.setAttribute("closebuttonhover", "true");
-    } else {
-      this.tabCloseButton.style.visibility = "hidden";
-      this.tabCloseButton.left = this.tabCloseButton.top = 0;
-      this.tabCloseButton._targetPreview = null;
-    }
-  },
-
-  _updatePreview: function allTabs_updatePreview(aPreview) {
-    aPreview.setAttribute("label", aPreview._tab.label);
-    aPreview.setAttribute("tooltiptext", aPreview._tab.label);
-    aPreview.setAttribute("crop", aPreview._tab.crop);
-    if (aPreview._tab.image)
-      aPreview.setAttribute("image", aPreview._tab.image);
-    else
-      aPreview.removeAttribute("image");
-  
-    aPreview.removeAttribute("soundplaying");
-    aPreview.removeAttribute("muted");
-    if (aPreview._tab.hasAttribute("muted"))
-      aPreview.setAttribute("muted", "true");
-    else if (aPreview._tab.hasAttribute("soundplaying"))
-      aPreview.setAttribute("soundplaying", "true");
-
-    var thumbnail = tabPreviews.get(aPreview._tab);
-    if (aPreview.firstChild) {
-      if (aPreview.firstChild == thumbnail)
-        return;
-      aPreview.removeChild(aPreview.firstChild);
-    }
-    aPreview.appendChild(thumbnail);
-  },
-
-  _onKeyPress: function allTabs_onKeyPress(event) {
-    if (event.eventPhase == event.CAPTURING_PHASE) {
-      this._onCapturingKeyPress(event);
-      return;
-    }
-
-    if (event.keyCode == event.DOM_VK_ESCAPE) {
-      this.close();
-      event.preventDefault();
-      event.stopPropagation();
-      return;
-    }
-
-    if (event.target == this.filterField) {
-      switch (event.keyCode) {
-        case event.DOM_VK_UP:
-          if (this._visible) {
-            let previews = this._visiblePreviews;
-            let columns = Math.min(previews.length, this._columns);
-            previews[Math.floor(previews.length / columns) * columns - 1].focus();
-            event.preventDefault();
-            event.stopPropagation();
-          }
-          break;
-        case event.DOM_VK_DOWN:
-          if (this._visible) {
-            this._firstVisiblePreview.focus();
-            event.preventDefault();
-            event.stopPropagation();
-          }
-          break;
-      }
-    }
-  },
-
-  _onCapturingKeyPress: function allTabs_onCapturingKeyPress(event) {
-    switch (event.keyCode) {
-      case event.DOM_VK_UP:
-      case event.DOM_VK_DOWN:
-        if (event.target != this.filterField)
-          this._advanceFocusVertically(event);
-        break;
-      case event.DOM_VK_RETURN:
-        if (event.target == this.filterField) {
-          this.filter();
-          this.pick();
-          event.preventDefault();
-          event.stopPropagation();
-        }
-        break;
-    }
-  },
-
-  _advanceFocusVertically: function allTabs_advanceFocusVertically(event) {
-    var preview = document.activeElement;
-    if (!preview || preview.parentNode.parentNode != this.container)
-      return;
-
-    event.stopPropagation();
-
-    var up = (event.keyCode == event.DOM_VK_UP);
-    var previews = this._visiblePreviews;
-
-    if (up && preview == previews[0]) {
-      this.filterField.focus();
-      return;
-    }
-
-    var i       = previews.indexOf(preview);
-    var columns = Math.min(previews.length, this._columns);
-    var column  = i % columns;
-    var row     = Math.floor(i / columns);
-
-    function newIndex()    row * columns + column;
-    function outOfBounds() newIndex() >= previews.length;
-
-    if (up) {
-      row--;
-      if (row < 0) {
-        let rows = Math.ceil(previews.length / columns);
-        row = rows - 1;
-        column--;
-        if (outOfBounds())
-          row--;
-      }
-    } else {
-      row++;
-      if (outOfBounds()) {
-        if (column == columns - 1) {
-          this.filterField.focus();
-          return;
-        }
-        row = 0;
-        column++;
-      }
-    }
-    previews[newIndex()].focus();
-  }
-};