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gecko/browser/components/tabview/ui.js

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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is ui.js.
*
* The Initial Developer of the Original Code is
* the Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Ian Gilman <ian@iangilman.com>
* Aza Raskin <aza@mozilla.com>
* Michael Yoshitaka Erlewine <mitcho@mitcho.com>
* Ehsan Akhgari <ehsan@mozilla.com>
* Raymond Lee <raymond@appcoast.com>
* Sean Dunn <seanedunn@yahoo.com>
* Tim Taubert <tim.taubert@gmx.de>
* Mihai Sucan <mihai.sucan@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
// **********
// Title: ui.js
let Keys = { meta: false };
// ##########
// Class: UI
// Singleton top-level UI manager.
let UI = {
// Constant: DBLCLICK_INTERVAL
// Defines the maximum time (in ms) between two clicks for it to count as
// a double click.
DBLCLICK_INTERVAL: 500,
// Constant: DBLCLICK_OFFSET
// Defines the maximum offset (in pixels) between two clicks for it to count as
// a double click.
DBLCLICK_OFFSET: 5,
// Variable: _frameInitialized
// True if the Tab View UI frame has been initialized.
_frameInitialized: false,
// Variable: _pageBounds
// Stores the page bounds.
_pageBounds: null,
// Variable: _closedLastVisibleTab
// If true, the last visible tab has just been closed in the tab strip.
_closedLastVisibleTab: false,
// Variable: _closedSelectedTabInTabView
// If true, a select tab has just been closed in TabView.
_closedSelectedTabInTabView: false,
// Variable: restoredClosedTab
// If true, a closed tab has just been restored.
restoredClosedTab: false,
// Variable: _isChangingVisibility
// Tracks whether we're currently in the process of showing/hiding the tabview.
_isChangingVisibility: false,
// Variable: _reorderTabItemsOnShow
// Keeps track of the <GroupItem>s which their tab items' tabs have been moved
// and re-orders the tab items when switching to TabView.
_reorderTabItemsOnShow: [],
// Variable: _reorderTabsOnHide
// Keeps track of the <GroupItem>s which their tab items have been moved in
// TabView UI and re-orders the tabs when switcing back to main browser.
_reorderTabsOnHide: [],
// Variable: _currentTab
// Keeps track of which xul:tab we are currently on.
// Used to facilitate zooming down from a previous tab.
_currentTab: null,
// Variable: _lastClick
// Keeps track of the time of last click event to detect double click.
// Used to create tabs on double-click since we cannot attach 'dblclick'
_lastClick: 0,
// Variable: _eventListeners
// Keeps track of event listeners added to the AllTabs object.
_eventListeners: {},
// Variable: _cleanupFunctions
// An array of functions to be called at uninit time
_cleanupFunctions: [],
// Constant: _maxInteractiveWait
// If the UI is in the middle of an operation, this is the max amount of
// milliseconds to wait between input events before we no longer consider
// the operation interactive.
_maxInteractiveWait: 250,
// Variable: _privateBrowsing
// Keeps track of info related to private browsing, including:
// transitionMode - whether we're entering or exiting PB
// wasInTabView - whether TabView was visible before we went into PB
_privateBrowsing: {
transitionMode: "",
wasInTabView: false
},
// Variable: _storageBusy
// Tells whether the storage is currently busy or not.
_storageBusy: false,
// Variable: isDOMWindowClosing
// Tells wether the parent window is about to close
isDOMWindowClosing: false,
// Variable: _browserKeys
// Used to keep track of allowed browser keys.
_browserKeys: null,
// Variable: _browserKeysWithShift
// Used to keep track of allowed browser keys with Shift key combination.
_browserKeysWithShift: null,
// Variable: ignoreKeypressForSearch
// Used to prevent keypress being handled after quitting search mode.
ignoreKeypressForSearch: false,
// Variable: _lastOpenedTab
// Used to keep track of the last opened tab.
_lastOpenedTab: null,
// ----------
// Function: toString
// Prints [UI] for debug use
toString: function UI_toString() {
return "[UI]";
},
// ----------
// Function: init
// Must be called after the object is created.
init: function UI_init() {
try {
let self = this;
// initialize the direction of the page
this._initPageDirection();
// ___ thumbnail storage
ThumbnailStorage.init();
// ___ storage
Storage.init();
// ___ storage policy
StoragePolicy.init();
if (Storage.readWindowBusyState(gWindow))
this.storageBusy();
let data = Storage.readUIData(gWindow);
this._storageSanity(data);
this._pageBounds = data.pageBounds;
// ___ search
Search.init();
// ___ currentTab
this._currentTab = gBrowser.selectedTab;
// ___ exit button
iQ("#exit-button").click(function() {
self.exit();
self.blurAll();
});
// When you click on the background/empty part of TabView,
// we create a new groupItem.
iQ(gTabViewFrame.contentDocument).mousedown(function(e) {
if (iQ(":focus").length > 0) {
iQ(":focus").each(function(element) {
// don't fire blur event if the same input element is clicked.
if (e.target != element && element.nodeName == "INPUT")
element.blur();
});
}
if (e.originalTarget.id == "content") {
if (!Utils.isLeftClick(e)) {
self._lastClick = 0;
self._lastClickPositions = null;
} else {
// Create a group with one tab on double click
if (Date.now() - self._lastClick <= self.DBLCLICK_INTERVAL &&
(self._lastClickPositions.x - self.DBLCLICK_OFFSET) <= e.clientX &&
(self._lastClickPositions.x + self.DBLCLICK_OFFSET) >= e.clientX &&
(self._lastClickPositions.y - self.DBLCLICK_OFFSET) <= e.clientY &&
(self._lastClickPositions.y + self.DBLCLICK_OFFSET) >= e.clientY) {
let box =
new Rect(e.clientX - Math.floor(TabItems.tabWidth/2),
e.clientY - Math.floor(TabItems.tabHeight/2),
TabItems.tabWidth, TabItems.tabHeight);
box.inset(-30, -30);
let opts = {immediately: true, bounds: box};
let groupItem = new GroupItem([], opts);
groupItem.newTab();
self._lastClick = 0;
self._lastClickPositions = null;
gTabView.firstUseExperienced = true;
} else {
self._lastClick = Date.now();
self._lastClickPositions = new Point(e.clientX, e.clientY);
self._createGroupItemOnDrag(e);
}
}
}
});
iQ(window).bind("unload", function() {
self.uninit();
});
// ___ setup DOMWillOpenModalDialog message handler
let mm = gWindow.messageManager;
let callback = this._onDOMWillOpenModalDialog.bind(this);
mm.addMessageListener("Panorama:DOMWillOpenModalDialog", callback);
this._cleanupFunctions.push(function () {
mm.removeMessageListener("Panorama:DOMWillOpenModalDialog", callback);
});
// ___ setup key handlers
this._setTabViewFrameKeyHandlers();
// ___ add tab action handlers
this._addTabActionHandlers();
// ___ groups
GroupItems.init();
GroupItems.pauseArrange();
let hasGroupItemsData = GroupItems.load();
// ___ tabs
TabItems.init();
TabItems.pausePainting();
if (!hasGroupItemsData)
this.reset();
// ___ resizing
if (this._pageBounds)
this._resize(true);
else
this._pageBounds = Items.getPageBounds();
iQ(window).resize(function() {
self._resize();
});
// ___ setup event listener to save canvas images
gWindow.addEventListener("SSWindowClosing", function onWindowClosing() {
gWindow.removeEventListener("SSWindowClosing", onWindowClosing, false);
// XXX bug #635975 - don't unlink the tab if the dom window is closing.
self.isDOMWindowClosing = true;
if (self.isTabViewVisible())
GroupItems.removeHiddenGroups();
TabItems.saveAll();
TabItems.saveAllThumbnails({synchronously: true});
self._save();
}, false);
// ___ load frame script
let frameScript = "chrome://browser/content/tabview-content.js";
gWindow.messageManager.loadFrameScript(frameScript, true);
// ___ Done
this._frameInitialized = true;
this._save();
// fire an iframe initialized event so everyone knows tab view is
// initialized.
let event = document.createEvent("Events");
event.initEvent("tabviewframeinitialized", true, false);
dispatchEvent(event);
} catch(e) {
Utils.log(e);
} finally {
GroupItems.resumeArrange();
}
},
// Function: uninit
// Should be called when window is unloaded.
uninit: function UI_uninit() {
// call our cleanup functions
this._cleanupFunctions.forEach(function(func) {
func();
});
this._cleanupFunctions = [];
// additional clean up
TabItems.uninit();
GroupItems.uninit();
Storage.uninit();
StoragePolicy.uninit();
this._removeTabActionHandlers();
this._currentTab = null;
this._pageBounds = null;
this._reorderTabItemsOnShow = null;
this._reorderTabsOnHide = null;
this._frameInitialized = false;
},
// Property: rtl
// Returns true if we are in RTL mode, false otherwise
rtl: false,
// Function: reset
// Resets the Panorama view to have just one group with all tabs
reset: function UI_reset() {
let padding = Trenches.defaultRadius;
let welcomeWidth = 300;
let pageBounds = Items.getPageBounds();
pageBounds.inset(padding, padding);
let $actions = iQ("#actions");
if ($actions) {
pageBounds.width -= $actions.width();
if (UI.rtl)
pageBounds.left += $actions.width() - padding;
}
// ___ make a fresh groupItem
let box = new Rect(pageBounds);
box.width = Math.min(box.width * 0.667,
pageBounds.width - (welcomeWidth + padding));
box.height = box.height * 0.667;
if (UI.rtl) {
box.left = pageBounds.left + welcomeWidth + 2 * padding;
}
GroupItems.groupItems.forEach(function(group) {
group.close();
});
let options = {
bounds: box,
immediately: true
};
let groupItem = new GroupItem([], options);
let items = TabItems.getItems();
items.forEach(function(item) {
if (item.parent)
item.parent.remove(item);
groupItem.add(item, {immediately: true});
});
this.setActive(groupItem);
},
// ----------
// Function: blurAll
// Blurs any currently focused element
blurAll: function UI_blurAll() {
iQ(":focus").each(function(element) {
element.blur();
});
},
// ----------
// Function: isIdle
// Returns true if the last interaction was long enough ago to consider the
// UI idle. Used to determine whether interactivity would be sacrificed if
// the CPU was to become busy.
//
isIdle: function UI_isIdle() {
let time = Date.now();
let maxEvent = Math.max(drag.lastMoveTime, resize.lastMoveTime);
return (time - maxEvent) > this._maxInteractiveWait;
},
// ----------
// Function: getActiveTab
// Returns the currently active tab as a <TabItem>
getActiveTab: function UI_getActiveTab() {
return this._activeTab;
},
// ----------
// Function: _setActiveTab
// Sets the currently active tab. The idea of a focused tab is useful
// for keyboard navigation and returning to the last zoomed-in tab.
// Hitting return/esc brings you to the focused tab, and using the
// arrow keys lets you navigate between open tabs.
//
// Parameters:
// - Takes a <TabItem>
_setActiveTab: function UI__setActiveTab(tabItem) {
if (tabItem == this._activeTab)
return;
if (this._activeTab) {
this._activeTab.makeDeactive();
this._activeTab.removeSubscriber("close", this._onActiveTabClosed);
}
this._activeTab = tabItem;
if (this._activeTab) {
this._activeTab.addSubscriber("close", this._onActiveTabClosed);
this._activeTab.makeActive();
}
},
// ----------
// Function: _onActiveTabClosed
// Handles when the currently active tab gets closed.
//
// Parameters:
// - the <TabItem> that is closed
_onActiveTabClosed: function UI__onActiveTabClosed(tabItem){
if (UI._activeTab == tabItem)
UI._setActiveTab(null);
},
// ----------
// Function: setActive
// Sets the active tab item or group item
// Parameters:
//
// options
// dontSetActiveTabInGroup bool for not setting active tab in group
setActive: function UI_setActive(item, options) {
Utils.assert(item, "item must be given");
if (item.isATabItem) {
if (item.parent)
GroupItems.setActiveGroupItem(item.parent);
this._setActiveTab(item);
} else {
GroupItems.setActiveGroupItem(item);
if (!options || !options.dontSetActiveTabInGroup) {
let activeTab = item.getActiveTab()
if (activeTab)
this._setActiveTab(activeTab);
}
}
},
// ----------
// Function: clearActiveTab
// Sets the active tab to 'null'.
clearActiveTab: function UI_clearActiveTab() {
this._setActiveTab(null);
},
// ----------
// Function: isTabViewVisible
// Returns true if the TabView UI is currently shown.
isTabViewVisible: function UI_isTabViewVisible() {
return gTabViewDeck.selectedPanel == gTabViewFrame;
},
// ---------
// Function: _initPageDirection
// Initializes the page base direction
_initPageDirection: function UI__initPageDirection() {
let chromeReg = Cc["@mozilla.org/chrome/chrome-registry;1"].
getService(Ci.nsIXULChromeRegistry);
let dir = chromeReg.isLocaleRTL("global");
document.documentElement.setAttribute("dir", dir ? "rtl" : "ltr");
this.rtl = dir;
},
// ----------
// Function: showTabView
// Shows TabView and hides the main browser UI.
// Parameters:
// zoomOut - true for zoom out animation, false for nothing.
showTabView: function UI_showTabView(zoomOut) {
if (this.isTabViewVisible() || this._isChangingVisibility)
return;
this._isChangingVisibility = true;
// initialize the direction of the page
this._initPageDirection();
var self = this;
var currentTab = this._currentTab;
this._reorderTabItemsOnShow.forEach(function(groupItem) {
groupItem.reorderTabItemsBasedOnTabOrder();
});
this._reorderTabItemsOnShow = [];
#ifdef XP_WIN
// Restore the full height when showing TabView
gTabViewFrame.style.marginTop = "";
#endif
gTabViewDeck.selectedPanel = gTabViewFrame;
gWindow.TabsInTitlebar.allowedBy("tabview-open", false);
gTabViewFrame.contentWindow.focus();
gBrowser.updateTitlebar();
#ifdef XP_MACOSX
this.setTitlebarColors(true);
#endif
let event = document.createEvent("Events");
event.initEvent("tabviewshown", true, false);
Storage.saveVisibilityData(gWindow, "true");
if (zoomOut && currentTab && currentTab._tabViewTabItem) {
let item = currentTab._tabViewTabItem;
// If there was a previous currentTab we want to animate
// its thumbnail (canvas) for the zoom out.
// Note that we start the animation on the chrome thread.
// Zoom out!
item.zoomOut(function() {
if (!currentTab._tabViewTabItem) // if the tab's been destroyed
item = null;
self.setActive(item);
self._resize(true);
self._isChangingVisibility = false;
dispatchEvent(event);
// Flush pending updates
GroupItems.flushAppTabUpdates();
TabItems.resumePainting();
});
} else {
self.clearActiveTab();
self._isChangingVisibility = false;
dispatchEvent(event);
// Flush pending updates
GroupItems.flushAppTabUpdates();
TabItems.resumePainting();
}
if (gTabView.firstUseExperienced)
gTabView.enableSessionRestore();
},
// ----------
// Function: hideTabView
// Hides TabView and shows the main browser UI.
hideTabView: function UI_hideTabView() {
if (!this.isTabViewVisible() || this._isChangingVisibility)
return;
this._isChangingVisibility = true;
// another tab might be select if user decides to stay on a page when
// a onclose confirmation prompts.
GroupItems.removeHiddenGroups();
TabItems.pausePainting();
this._reorderTabsOnHide.forEach(function(groupItem) {
groupItem.reorderTabsBasedOnTabItemOrder();
});
this._reorderTabsOnHide = [];
#ifdef XP_WIN
// Push the top of TabView frame to behind the tabbrowser, so glass can show
// XXX bug 586679: avoid shrinking the iframe and squishing iframe contents
// as well as avoiding the flash of black as we animate out
gTabViewFrame.style.marginTop = gBrowser.boxObject.y + "px";
#endif
gTabViewDeck.selectedPanel = gBrowserPanel;
gWindow.TabsInTitlebar.allowedBy("tabview-open", true);
gBrowser.selectedBrowser.focus();
gBrowser.updateTitlebar();
#ifdef XP_MACOSX
this.setTitlebarColors(false);
#endif
Storage.saveVisibilityData(gWindow, "false");
this._isChangingVisibility = false;
let event = document.createEvent("Events");
event.initEvent("tabviewhidden", true, false);
dispatchEvent(event);
},
#ifdef XP_MACOSX
// ----------
// Function: setTitlebarColors
// Used on the Mac to make the title bar match the gradient in the rest of the
// TabView UI.
//
// Parameters:
// colors - (bool or object) true for the special TabView color, false for
// the normal color, and an object with "active" and "inactive"
// properties to specify directly.
setTitlebarColors: function UI_setTitlebarColors(colors) {
// Mac Only
var mainWindow = gWindow.document.getElementById("main-window");
if (colors === true) {
mainWindow.setAttribute("activetitlebarcolor", "#C4C4C4");
mainWindow.setAttribute("inactivetitlebarcolor", "#EDEDED");
} else if (colors && "active" in colors && "inactive" in colors) {
mainWindow.setAttribute("activetitlebarcolor", colors.active);
mainWindow.setAttribute("inactivetitlebarcolor", colors.inactive);
} else {
mainWindow.removeAttribute("activetitlebarcolor");
mainWindow.removeAttribute("inactivetitlebarcolor");
}
},
#endif
// ----------
// Function: storageBusy
// Pauses the storage activity that conflicts with sessionstore updates and
// private browsing mode switches. Calls can be nested.
storageBusy: function UI_storageBusy() {
if (this._storageBusy)
return;
this._storageBusy = true;
TabItems.pauseReconnecting();
GroupItems.pauseAutoclose();
},
// ----------
// Function: storageReady
// Resumes the activity paused by storageBusy, and updates for any new group
// information in sessionstore. Calls can be nested.
storageReady: function UI_storageReady() {
if (!this._storageBusy)
return;
this._storageBusy = false;
let hasGroupItemsData = GroupItems.load();
if (!hasGroupItemsData)
this.reset();
TabItems.resumeReconnecting();
GroupItems._updateTabBar();
GroupItems.resumeAutoclose();
},
// ----------
// Function: _addTabActionHandlers
// Adds handlers to handle tab actions.
_addTabActionHandlers: function UI__addTabActionHandlers() {
var self = this;
// session restore events
function handleSSWindowStateBusy() {
self.storageBusy();
}
function handleSSWindowStateReady() {
self.storageReady();
}
gWindow.addEventListener("SSWindowStateBusy", handleSSWindowStateBusy, false);
gWindow.addEventListener("SSWindowStateReady", handleSSWindowStateReady, false);
this._cleanupFunctions.push(function() {
gWindow.removeEventListener("SSWindowStateBusy", handleSSWindowStateBusy, false);
gWindow.removeEventListener("SSWindowStateReady", handleSSWindowStateReady, false);
});
// Private Browsing:
// When transitioning to PB, we exit Panorama if necessary (making note of the
// fact that we were there so we can return after PB) and make sure we
// don't reenter Panorama due to all of the session restore tab
// manipulation (which otherwise we might). When transitioning away from
// PB, we reenter Panorama if we had been there directly before PB.
function pbObserver(subject, topic, data) {
if (topic == "private-browsing") {
// We could probably do this in private-browsing-change-granted, but
// this seems like a nicer spot, right in the middle of the process.
if (data == "enter") {
// If we are in Tab View, exit.
self._privateBrowsing.wasInTabView = self.isTabViewVisible();
if (self.isTabViewVisible())
self.goToTab(gBrowser.selectedTab);
}
} else if (topic == "private-browsing-change-granted") {
if (data == "enter" || data == "exit") {
Search.hide();
self._privateBrowsing.transitionMode = data;
// make sure to save all thumbnails that haven't been saved yet
// before we enter the private browsing mode
if (data == "enter")
TabItems.saveAllThumbnails({synchronously: true});
}
} else if (topic == "private-browsing-transition-complete") {
// We use .transitionMode here, as aData is empty.
if (self._privateBrowsing.transitionMode == "exit" &&
self._privateBrowsing.wasInTabView)
self.showTabView(false);
self._privateBrowsing.transitionMode = "";
}
}
Services.obs.addObserver(pbObserver, "private-browsing", false);
Services.obs.addObserver(pbObserver, "private-browsing-change-granted", false);
Services.obs.addObserver(pbObserver, "private-browsing-transition-complete", false);
this._cleanupFunctions.push(function() {
Services.obs.removeObserver(pbObserver, "private-browsing");
Services.obs.removeObserver(pbObserver, "private-browsing-change-granted");
Services.obs.removeObserver(pbObserver, "private-browsing-transition-complete");
});
// TabOpen
this._eventListeners.open = function (event) {
let tab = event.target;
// if it's an app tab, add it to all the group items
if (tab.pinned)
GroupItems.addAppTab(tab);
else if (self.isTabViewVisible() && !self._storageBusyCount)
self._lastOpenedTab = tab;
};
// TabClose
this._eventListeners.close = function (event) {
let tab = event.target;
// if it's an app tab, remove it from all the group items
if (tab.pinned)
GroupItems.removeAppTab(tab);
if (self.isTabViewVisible()) {
// just closed the selected tab in the TabView interface.
if (self._currentTab == tab)
self._closedSelectedTabInTabView = true;
} else {
// If we're currently in the process of entering private browsing,
// we don't want to go to the Tab View UI.
if (self._storageBusy)
return;
// if not closing the last tab
if (gBrowser.tabs.length > 1) {
// Don't return to TabView if there are any app tabs
for (let a = 0; a < gBrowser._numPinnedTabs; a++) {
if (!gBrowser.tabs[a].closing)
return;
}
let groupItem = GroupItems.getActiveGroupItem();
// 1) Only go back to the TabView tab when there you close the last
// tab of a groupItem.
let closingLastOfGroup = (groupItem &&
groupItem._children.length == 1 &&
groupItem._children[0].tab == tab);
// 2) When a blank tab is active while restoring a closed tab the
// blank tab gets removed. The active group is not closed as this is
// where the restored tab goes. So do not show the TabView.
let tabItem = tab && tab._tabViewTabItem;
let closingBlankTabAfterRestore =
(tabItem && tabItem.isRemovedAfterRestore);
if (closingLastOfGroup && !closingBlankTabAfterRestore) {
// for the tab focus event to pick up.
self._closedLastVisibleTab = true;
self.showTabView();
}
}
}
};
// TabMove
this._eventListeners.move = function (event) {
let tab = event.target;
if (GroupItems.groupItems.length > 0) {
if (tab.pinned) {
if (gBrowser._numPinnedTabs > 1)
GroupItems.arrangeAppTab(tab);
} else {
let activeGroupItem = GroupItems.getActiveGroupItem();
if (activeGroupItem)
self.setReorderTabItemsOnShow(activeGroupItem);
}
}
};
// TabSelect
this._eventListeners.select = function (event) {
self.onTabSelect(event.target);
};
// TabPinned
this._eventListeners.pinned = function (event) {
let tab = event.target;
TabItems.handleTabPin(tab);
GroupItems.addAppTab(tab);
};
// TabUnpinned
this._eventListeners.unpinned = function (event) {
let tab = event.target;
TabItems.handleTabUnpin(tab);
GroupItems.removeAppTab(tab);
let groupItem = tab._tabViewTabItem.parent;
if (groupItem)
self.setReorderTabItemsOnShow(groupItem);
};
// Actually register the above handlers
for (let name in this._eventListeners)
AllTabs.register(name, this._eventListeners[name]);
},
// ----------
// Function: _removeTabActionHandlers
// Removes handlers to handle tab actions.
_removeTabActionHandlers: function UI__removeTabActionHandlers() {
for (let name in this._eventListeners)
AllTabs.unregister(name, this._eventListeners[name]);
},
// ----------
// Function: goToTab
// Selects the given xul:tab in the browser.
goToTab: function UI_goToTab(xulTab) {
// If it's not focused, the onFocus listener would handle it.
if (gBrowser.selectedTab == xulTab)
this.onTabSelect(xulTab);
else
gBrowser.selectedTab = xulTab;
},
// ----------
// Function: onTabSelect
// Called when the user switches from one tab to another outside of the TabView UI.
onTabSelect: function UI_onTabSelect(tab) {
this._currentTab = tab;
if (this.isTabViewVisible()) {
// We want to zoom in if:
// 1) we didn't just restore a tab via Ctrl+Shift+T
// 2) we're not in the middle of switching from/to private browsing
// 3) the currently selected tab is the last created tab and has a tabItem
if (!this.restoredClosedTab && !this._privateBrowsing.transitionMode &&
this._lastOpenedTab == tab && tab._tabViewTabItem) {
tab._tabViewTabItem.zoomIn(true);
this._lastOpenedTab = null;
return;
}
if (this._closedLastVisibleTab ||
(this._closedSelectedTabInTabView && !this.closedLastTabInTabView) ||
this.restoredClosedTab) {
if (this.restoredClosedTab) {
// when the tab view UI is being displayed, update the thumb for the
// restored closed tab after the page load
tab.linkedBrowser.addEventListener("load", function onLoad(event) {
tab.linkedBrowser.removeEventListener("load", onLoad, true);
TabItems._update(tab);
}, true);
}
this._closedLastVisibleTab = false;
this._closedSelectedTabInTabView = false;
this.closedLastTabInTabView = false;
this.restoredClosedTab = false;
return;
}
}
// reset these vars, just in case.
this._closedLastVisibleTab = false;
this._closedSelectedTabInTabView = false;
this.closedLastTabInTabView = false;
this.restoredClosedTab = false;
this._lastOpenedTab = null;
// if TabView is visible but we didn't just close the last tab or
// selected tab, show chrome.
if (this.isTabViewVisible()) {
// Unhide the group of the tab the user is activating.
if (tab && tab._tabViewTabItem && tab._tabViewTabItem.parent &&
tab._tabViewTabItem.parent.hidden)
tab._tabViewTabItem.parent._unhide({immediately: true});
this.hideTabView();
}
// another tab might be selected when hideTabView() is invoked so a
// validation is needed.
if (this._currentTab != tab)
return;
let newItem = null;
// update the tab bar for the new tab's group
if (tab && tab._tabViewTabItem) {
if (!TabItems.reconnectingPaused()) {
newItem = tab._tabViewTabItem;
GroupItems.updateActiveGroupItemAndTabBar(newItem);
}
} else {
// No tabItem; must be an app tab. Base the tab bar on the current group.
// If no current group, figure it out based on what's already in the tab
// bar.
if (!GroupItems.getActiveGroupItem()) {
for (let a = 0; a < gBrowser.tabs.length; a++) {
let theTab = gBrowser.tabs[a];
if (!theTab.pinned) {
let tabItem = theTab._tabViewTabItem;
this.setActive(tabItem.parent);
break;
}
}
}
if (GroupItems.getActiveGroupItem())
GroupItems._updateTabBar();
}
},
// ----------
// Function: _onDOMWillOpenModalDialog
// Called when a web page is about to show a modal dialog.
_onDOMWillOpenModalDialog: function UI__onDOMWillOpenModalDialog(cx) {
if (!this.isTabViewVisible())
return;
let index = gBrowser.browsers.indexOf(cx.target);
if (index == -1)
return;
let tab = gBrowser.tabs[index];
// When TabView is visible, we need to call onTabSelect to make sure that
// TabView is hidden and that the correct group is activated. When a modal
// dialog is shown for currently selected tab the onTabSelect event handler
// is not called, so we need to do it.
if (gBrowser.selectedTab == tab && this._currentTab == tab)
this.onTabSelect(tab);
},
// ----------
// Function: setReorderTabsOnHide
// Sets the groupItem which the tab items' tabs should be re-ordered when
// switching to the main browser UI.
// Parameters:
// groupItem - the groupItem which would be used for re-ordering tabs.
setReorderTabsOnHide: function UI_setReorderTabsOnHide(groupItem) {
if (this.isTabViewVisible()) {
var index = this._reorderTabsOnHide.indexOf(groupItem);
if (index == -1)
this._reorderTabsOnHide.push(groupItem);
}
},
// ----------
// Function: setReorderTabItemsOnShow
// Sets the groupItem which the tab items should be re-ordered when
// switching to the tab view UI.
// Parameters:
// groupItem - the groupItem which would be used for re-ordering tab items.
setReorderTabItemsOnShow: function UI_setReorderTabItemsOnShow(groupItem) {
if (!this.isTabViewVisible()) {
var index = this._reorderTabItemsOnShow.indexOf(groupItem);
if (index == -1)
this._reorderTabItemsOnShow.push(groupItem);
}
},
// ----------
updateTabButton: function UI_updateTabButton() {
let exitButton = document.getElementById("exit-button");
let numberOfGroups = GroupItems.groupItems.length;
exitButton.setAttribute("groups", numberOfGroups);
gTabView.updateGroupNumberBroadcaster(numberOfGroups);
},
// ----------
// Function: getClosestTab
// Convenience function to get the next tab closest to the entered position
getClosestTab: function UI_getClosestTab(tabCenter) {
let cl = null;
let clDist;
TabItems.getItems().forEach(function (item) {
if (!item.parent || item.parent.hidden)
return;
let testDist = tabCenter.distance(item.bounds.center());
if (cl==null || testDist < clDist) {
cl = item;
clDist = testDist;
}
});
return cl;
},
// ----------
// Function: _setupBrowserKeys
// Sets up the allowed browser keys using key elements.
_setupBrowserKeys: function UI__setupKeyWhiteList() {
let keys = {};
[
#ifdef XP_UNIX
"quitApplication",
#else
"redo",
#endif
#ifdef XP_MACOSX
"preferencesCmdMac", "minimizeWindow", "hideThisAppCmdMac",
#endif
"newNavigator", "newNavigatorTab", "undo", "cut", "copy", "paste",
"selectAll", "find"
].forEach(function(key) {
let element = gWindow.document.getElementById("key_" + key);
let code = element.getAttribute("key").toLocaleLowerCase().charCodeAt(0);
keys[code] = key;
});
this._browserKeys = keys;
keys = {};
// The lower case letters are passed to processBrowserKeys() even with shift
// key when stimulating a key press using EventUtils.synthesizeKey() so need
// to handle both upper and lower cases here.
[
#ifdef XP_UNIX
"redo",
#endif
#ifdef XP_MACOSX
"fullScreen",
#endif
"closeWindow", "tabview", "undoCloseTab", "undoCloseWindow",
"privatebrowsing"
].forEach(function(key) {
let element = gWindow.document.getElementById("key_" + key);
let code = element.getAttribute("key").toLocaleLowerCase().charCodeAt(0);
keys[code] = key;
});
this._browserKeysWithShift = keys;
},
// ----------
// Function: _setTabViewFrameKeyHandlers
// Sets up the key handlers for navigating between tabs within the TabView UI.
_setTabViewFrameKeyHandlers: function UI__setTabViewFrameKeyHandlers() {
let self = this;
this._setupBrowserKeys();
iQ(window).keyup(function(event) {
if (!event.metaKey)
Keys.meta = false;
});
iQ(window).keypress(function(event) {
if (event.metaKey)
Keys.meta = true;
function processBrowserKeys(evt) {
// let any keys with alt to pass through
if (evt.altKey)
return;
#ifdef XP_MACOSX
if (evt.metaKey) {
#else
if (evt.ctrlKey) {
#endif
let preventDefault = true;
if (evt.shiftKey) {
// when a user presses ctrl+shift+key, upper case letter charCode
// is passed to processBrowserKeys() so converting back to lower
// case charCode before doing the check
let lowercaseCharCode =
String.fromCharCode(evt.charCode).toLocaleLowerCase().charCodeAt(0);
if (lowercaseCharCode in self._browserKeysWithShift) {
let key = self._browserKeysWithShift[lowercaseCharCode];
if (key == "tabview")
self.exit();
else
preventDefault = false;
}
} else {
if (evt.charCode in self._browserKeys) {
let key = self._browserKeys[evt.charCode];
if (key == "find")
self.enableSearch();
else
preventDefault = false;
}
}
if (preventDefault) {
evt.stopPropagation();
evt.preventDefault();
}
}
}
if ((iQ(":focus").length > 0 && iQ(":focus")[0].nodeName == "INPUT") ||
Search.isEnabled() || self.ignoreKeypressForSearch) {
self.ignoreKeypressForSearch = false;
processBrowserKeys(event);
return;
}
function getClosestTabBy(norm) {
if (!self.getActiveTab())
return null;
let activeTab = self.getActiveTab();
let activeTabGroup = activeTab.parent;
let myCenter = activeTab.bounds.center();
let match;
TabItems.getItems().forEach(function (item) {
if (!item.parent.hidden &&
(!activeTabGroup.expanded || activeTabGroup.id == item.parent.id)) {
let itemCenter = item.bounds.center();
if (norm(itemCenter, myCenter)) {
let itemDist = myCenter.distance(itemCenter);
if (!match || match[0] > itemDist)
match = [itemDist, item];
}
}
});
return match && match[1];
}
let preventDefault = true;
let activeTab;
let norm = null;
switch (event.keyCode) {
case KeyEvent.DOM_VK_RIGHT:
norm = function(a, me){return a.x > me.x};
break;
case KeyEvent.DOM_VK_LEFT:
norm = function(a, me){return a.x < me.x};
break;
case KeyEvent.DOM_VK_DOWN:
norm = function(a, me){return a.y > me.y};
break;
case KeyEvent.DOM_VK_UP:
norm = function(a, me){return a.y < me.y}
break;
}
if (norm != null) {
var nextTab = getClosestTabBy(norm);
if (nextTab) {
if (nextTab.isStacked && !nextTab.parent.expanded)
nextTab = nextTab.parent.getChild(0);
self.setActive(nextTab);
}
} else {
switch(event.keyCode) {
case KeyEvent.DOM_VK_ESCAPE:
let activeGroupItem = GroupItems.getActiveGroupItem();
if (activeGroupItem && activeGroupItem.expanded)
activeGroupItem.collapse();
else
self.exit();
break;
case KeyEvent.DOM_VK_RETURN:
case KeyEvent.DOM_VK_ENTER:
activeTab = self.getActiveTab();
if (activeTab)
activeTab.zoomIn();
break;
case KeyEvent.DOM_VK_TAB:
// tab/shift + tab to go to the next tab.
activeTab = self.getActiveTab();
if (activeTab) {
let tabItems = (activeTab.parent ? activeTab.parent.getChildren() :
[activeTab]);
let length = tabItems.length;
let currentIndex = tabItems.indexOf(activeTab);
if (length > 1) {
let newIndex;
if (event.shiftKey) {
if (currentIndex == 0)
newIndex = (length - 1);
else
newIndex = (currentIndex - 1);
} else {
if (currentIndex == (length - 1))
newIndex = 0;
else
newIndex = (currentIndex + 1);
}
self.setActive(tabItems[newIndex]);
}
}
break;
default:
processBrowserKeys(event);
preventDefault = false;
}
if (preventDefault) {
event.stopPropagation();
event.preventDefault();
}
}
});
},
// ----------
// Function: enableSearch
// Enables the search feature.
enableSearch: function UI_enableSearch() {
if (!Search.isEnabled()) {
Search.ensureShown();
Search.switchToInMode();
}
},
// ----------
// Function: _createGroupItemOnDrag
// Called in response to a mousedown in empty space in the TabView UI;
// creates a new groupItem based on the user's drag.
_createGroupItemOnDrag: function UI__createGroupItemOnDrag(e) {
const minSize = 60;
const minMinSize = 15;
let lastActiveGroupItem = GroupItems.getActiveGroupItem();
var startPos = { x: e.clientX, y: e.clientY };
var phantom = iQ("<div>")
.addClass("groupItem phantom activeGroupItem dragRegion")
.css({
position: "absolute",
zIndex: -1,
cursor: "default"
})
.appendTo("body");
var item = { // a faux-Item
container: phantom,
isAFauxItem: true,
bounds: {},
getBounds: function FauxItem_getBounds() {
return this.container.bounds();
},
setBounds: function FauxItem_setBounds(bounds) {
this.container.css(bounds);
},
setZ: function FauxItem_setZ(z) {
// don't set a z-index because we want to force it to be low.
},
setOpacity: function FauxItem_setOpacity(opacity) {
this.container.css("opacity", opacity);
},
// we don't need to pushAway the phantom item at the end, because
// when we create a new GroupItem, it'll do the actual pushAway.
pushAway: function () {},
};
item.setBounds(new Rect(startPos.y, startPos.x, 0, 0));
var dragOutInfo = new Drag(item, e);
function updateSize(e) {
var box = new Rect();
box.left = Math.min(startPos.x, e.clientX);
box.right = Math.max(startPos.x, e.clientX);
box.top = Math.min(startPos.y, e.clientY);
box.bottom = Math.max(startPos.y, e.clientY);
item.setBounds(box);
// compute the stationaryCorner
var stationaryCorner = "";
if (startPos.y == box.top)
stationaryCorner += "top";
else
stationaryCorner += "bottom";
if (startPos.x == box.left)
stationaryCorner += "left";
else
stationaryCorner += "right";
dragOutInfo.snap(stationaryCorner, false, false); // null for ui, which we don't use anyway.
box = item.getBounds();
if (box.width > minMinSize && box.height > minMinSize &&
(box.width > minSize || box.height > minSize))
item.setOpacity(1);
else
item.setOpacity(0.7);
e.preventDefault();
}
let self = this;
function collapse() {
let center = phantom.bounds().center();
phantom.animate({
width: 0,
height: 0,
top: center.y,
left: center.x
}, {
duration: 300,
complete: function() {
phantom.remove();
}
});
self.setActive(lastActiveGroupItem);
}
function finalize(e) {
iQ(window).unbind("mousemove", updateSize);
item.container.removeClass("dragRegion");
dragOutInfo.stop();
let box = item.getBounds();
if (box.width > minMinSize && box.height > minMinSize &&
(box.width > minSize || box.height > minSize)) {
let opts = {bounds: item.getBounds(), focusTitle: true};
let groupItem = new GroupItem([], opts);
self.setActive(groupItem);
phantom.remove();
dragOutInfo = null;
gTabView.firstUseExperienced = true;
} else {
collapse();
}
}
iQ(window).mousemove(updateSize)
iQ(gWindow).one("mouseup", finalize);
e.preventDefault();
return false;
},
// ----------
// Function: _resize
// Update the TabView UI contents in response to a window size change.
// Won't do anything if it doesn't deem the resize necessary.
// Parameters:
// force - true to update even when "unnecessary"; default false
_resize: function UI__resize(force) {
if (!this._pageBounds)
return;
// Here are reasons why we *won't* resize:
// 1. Panorama isn't visible (in which case we will resize when we do display)
// 2. the screen dimensions haven't changed
// 3. everything on the screen fits and nothing feels cramped
if (!force && !this.isTabViewVisible())
return;
let oldPageBounds = new Rect(this._pageBounds);
let newPageBounds = Items.getPageBounds();
if (newPageBounds.equals(oldPageBounds))
return;
if (!this.shouldResizeItems())
return;
var items = Items.getTopLevelItems();
// compute itemBounds: the union of all the top-level items' bounds.
var itemBounds = new Rect(this._pageBounds);
// We start with pageBounds so that we respect the empty space the user
// has left on the page.
itemBounds.width = 1;
itemBounds.height = 1;
items.forEach(function(item) {
var bounds = item.getBounds();
itemBounds = (itemBounds ? itemBounds.union(bounds) : new Rect(bounds));
});
if (newPageBounds.width < this._pageBounds.width &&
newPageBounds.width > itemBounds.width)
newPageBounds.width = this._pageBounds.width;
if (newPageBounds.height < this._pageBounds.height &&
newPageBounds.height > itemBounds.height)
newPageBounds.height = this._pageBounds.height;
var wScale;
var hScale;
if (Math.abs(newPageBounds.width - this._pageBounds.width)
> Math.abs(newPageBounds.height - this._pageBounds.height)) {
wScale = newPageBounds.width / this._pageBounds.width;
hScale = newPageBounds.height / itemBounds.height;
} else {
wScale = newPageBounds.width / itemBounds.width;
hScale = newPageBounds.height / this._pageBounds.height;
}
var scale = Math.min(hScale, wScale);
var self = this;
var pairs = [];
items.forEach(function(item) {
var bounds = item.getBounds();
bounds.left += (UI.rtl ? -1 : 1) * (newPageBounds.left - self._pageBounds.left);
bounds.left *= scale;
bounds.width *= scale;
bounds.top += newPageBounds.top - self._pageBounds.top;
bounds.top *= scale;
bounds.height *= scale;
pairs.push({
item: item,
bounds: bounds
});
});
Items.unsquish(pairs);
pairs.forEach(function(pair) {
pair.item.setBounds(pair.bounds, true);
pair.item.snap();
});
this._pageBounds = Items.getPageBounds();
this._save();
},
// ----------
// Function: shouldResizeItems
// Returns whether we should resize the items on the screen, based on whether
// the top-level items fit in the screen or not and whether they feel
// "cramped" or not.
// These computations may be done using cached values. The cache can be
// cleared with UI.clearShouldResizeItems().
shouldResizeItems: function UI_shouldResizeItems() {
let newPageBounds = Items.getPageBounds();
// If we don't have cached cached values...
if (this._minimalRect === undefined || this._feelsCramped === undefined) {
// Loop through every top-level Item for two operations:
// 1. check if it is feeling "cramped" due to squishing (a technical term),
// 2. union its bounds with the minimalRect
let feelsCramped = false;
let minimalRect = new Rect(0, 0, 1, 1);
Items.getTopLevelItems()
.forEach(function UI_shouldResizeItems_checkItem(item) {
let bounds = new Rect(item.getBounds());
feelsCramped = feelsCramped || (item.userSize &&
(item.userSize.x > bounds.width || item.userSize.y > bounds.height));
bounds.inset(-Trenches.defaultRadius, -Trenches.defaultRadius);
minimalRect = minimalRect.union(bounds);
});
// ensure the minimalRect extends to, but not beyond, the origin
minimalRect.left = 0;
minimalRect.top = 0;
this._minimalRect = minimalRect;
this._feelsCramped = feelsCramped;
}
return this._minimalRect.width > newPageBounds.width ||
this._minimalRect.height > newPageBounds.height ||
this._feelsCramped;
},
// ----------
// Function: clearShouldResizeItems
// Clear the cache of whether we should resize the items on the Panorama
// screen, forcing a recomputation on the next UI.shouldResizeItems()
// call.
clearShouldResizeItems: function UI_clearShouldResizeItems() {
delete this._minimalRect;
delete this._feelsCramped;
},
// ----------
// Function: exit
// Exits TabView UI.
exit: function UI_exit() {
let self = this;
let zoomedIn = false;
if (Search.isEnabled()) {
let matcher = Search.createSearchTabMatcher();
let matches = matcher.matched();
if (matches.length > 0) {
matches[0].zoomIn();
zoomedIn = true;
}
Search.hide();
}
if (!zoomedIn) {
let unhiddenGroups = GroupItems.groupItems.filter(function(groupItem) {
return (!groupItem.hidden && groupItem.getChildren().length > 0);
});
// no pinned tabs and no visible groups: open a new group. open a blank
// tab and return
if (!unhiddenGroups.length) {
let emptyGroups = GroupItems.groupItems.filter(function (groupItem) {
return (!groupItem.hidden && !groupItem.getChildren().length);
});
let group = (emptyGroups.length ? emptyGroups[0] : GroupItems.newGroup());
if (!gBrowser._numPinnedTabs) {
group.newTab(null, { closedLastTab: true });
return;
}
}
// If there's an active TabItem, zoom into it. If not (for instance when the
// selected tab is an app tab), just go there.
let activeTabItem = this.getActiveTab();
if (!activeTabItem) {
let tabItem = gBrowser.selectedTab._tabViewTabItem;
if (tabItem) {
if (!tabItem.parent || !tabItem.parent.hidden) {
activeTabItem = tabItem;
} else { // set active tab item if there is at least one unhidden group
if (unhiddenGroups.length > 0)
activeTabItem = unhiddenGroups[0].getActiveTab();
}
}
}
if (activeTabItem) {
activeTabItem.zoomIn();
} else {
if (gBrowser._numPinnedTabs > 0) {
if (gBrowser.selectedTab.pinned) {
self.goToTab(gBrowser.selectedTab);
} else {
Array.some(gBrowser.tabs, function(tab) {
if (tab.pinned) {
self.goToTab(tab);
return true;
}
return false
});
}
}
}
}
},
// ----------
// Function: storageSanity
// Given storage data for this object, returns true if it looks valid.
_storageSanity: function UI__storageSanity(data) {
if (Utils.isEmptyObject(data))
return true;
if (!Utils.isRect(data.pageBounds)) {
Utils.log("UI.storageSanity: bad pageBounds", data.pageBounds);
data.pageBounds = null;
return false;
}
return true;
},
// ----------
// Function: _save
// Saves the data for this object to persistent storage
_save: function UI__save() {
if (!this._frameInitialized)
return;
var data = {
pageBounds: this._pageBounds
};
if (this._storageSanity(data))
Storage.saveUIData(gWindow, data);
},
// ----------
// Function: _saveAll
// Saves all data associated with TabView.
// TODO: Save info items
_saveAll: function UI__saveAll() {
this._save();
GroupItems.saveAll();
TabItems.saveAll();
},
// ----------
// Function: shouldLoadFavIcon
// Takes a xul:browser and checks whether we should display a favicon for it.
shouldLoadFavIcon: function UI_shouldLoadFavIcon(browser) {
return !(browser.contentDocument instanceof window.ImageDocument) &&
(browser.currentURI.schemeIs("about") ||
gBrowser.shouldLoadFavIcon(browser.contentDocument.documentURIObject));
},
// ----------
// Function: getFavIconUrlForTab
// Gets fav icon url for the given xul:tab.
getFavIconUrlForTab: function UI_getFavIconUrlForTab(tab) {
let url;
if (tab.image) {
// if starts with http/https, fetch icon from favicon service via the moz-anno protocal
if (/^https?:/.test(tab.image))
url = gFavIconService.getFaviconLinkForIcon(gWindow.makeURI(tab.image)).spec;
else
url = tab.image;
} else {
url = gFavIconService.getFaviconImageForPage(tab.linkedBrowser.currentURI).spec;
}
return url;
},
// ----------
// Function: notifySessionRestoreEnabled
// Notify the user that session restore has been automatically enabled
// by showing a banner that expects no user interaction. It fades out after
// some seconds.
notifySessionRestoreEnabled: function UI_notifySessionRestoreEnabled() {
let brandBundle = gWindow.document.getElementById("bundle_brand");
let brandShortName = brandBundle.getString("brandShortName");
let notificationText = tabviewBundle.formatStringFromName(
"tabview.notification.sessionStore", [brandShortName], 1);
let banner = iQ("<div>")
.text(notificationText)
.addClass("banner")
.appendTo("body");
let onFadeOut = function () {
banner.remove();
};
let onFadeIn = function () {
setTimeout(function () {
banner.animate({opacity: 0}, {duration: 1500, complete: onFadeOut});
}, 5000);
};
banner.animate({opacity: 0.7}, {duration: 1500, complete: onFadeIn});
}
};
// ----------
UI.init();
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