Bug 474056 - Implement optional preview per tab r=dao,rflint,mconnor

This commit is contained in:
Rob Arnold 2009-10-06 00:26:15 -04:00
Родитель b5cedbcd46
Коммит 1d6ec1768e
8 изменённых файлов: 992 добавлений и 13 удалений

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@ -48,6 +48,12 @@
#endif
#endif
#ifdef XP_WIN
#ifndef WINCE
#define WINNT
#endif
#endif
pref("general.startup.browser", true);
pref("browser.chromeURL","chrome://browser/content/");
@ -900,3 +906,9 @@ pref("toolbar.customization.usesheet", true);
#else
pref("toolbar.customization.usesheet", false);
#endif
#ifdef WINNT
pref("aeropeek.enable", true);
pref("aeropeek.maxpreviews", 20);
pref("aeropeek.cachetime", 20);
#endif

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@ -47,6 +47,7 @@
# Edward Lee <edward.lee@engineering.uiuc.edu>
# Paul OShannessy <paul@oshannessy.com>
# Nils Maier <maierman@web.de>
# Rob Arnold <robarnold@cmu.edu>
#
# 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
@ -135,6 +136,29 @@ let gInitialPages = [
#include browser-places.js
#include browser-tabPreviews.js
#ifdef XP_WIN
#ifndef WINCE
#define WIN7_FEATURES
XPCOMUtils.defineLazyGetter(this, "Win7Features", function () {
const WINTASKBAR_CONTRACTID = "@mozilla.org/windows-taskbar;1";
let taskbar = Cc[WINTASKBAR_CONTRACTID].getService(Ci.nsIWinTaskbar);
if (taskbar.available) {
Cu.import("resource://gre/modules/wintaskbar/preview-per-tab.jsm");
return {
onOpenWindow: function () {
AeroPeek.onOpenWindow(window);
},
onCloseWindow: function () {
AeroPeek.onCloseWindow(window);
}
};
} else {
return { onOpenWindow: function () {}, onCloseWindow: function () {} };
}
});
#endif
#endif
/**
* We can avoid adding multiple load event listeners and save some time by adding
* one listener that calls all real handlers.
@ -1341,10 +1365,17 @@ function delayedStartup(isLoadingBlank, mustLoadSidebar) {
gBrowser.mPanelContainer.addEventListener("InstallBrowserTheme", LightWeightThemeWebInstaller, false, true);
gBrowser.mPanelContainer.addEventListener("PreviewBrowserTheme", LightWeightThemeWebInstaller, false, true);
gBrowser.mPanelContainer.addEventListener("ResetBrowserThemePreview", LightWeightThemeWebInstaller, false, true);
#ifdef WIN7_FEATURES
Win7Features.onOpenWindow();
#endif
}
function BrowserShutdown()
{
#ifdef WIN7_FEATURES
Win7Features.onCloseWindow();
#endif
gPrefService.removeObserver(ctrlTab.prefName, ctrlTab);
gPrefService.removeObserver(allTabs.prefName, allTabs);
tabPreviews.uninit();

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@ -32,6 +32,7 @@
- Mark Pilgrim <pilgrim@gmail.com>
- Dão Gottwald <dao@mozilla.com>
- Paul OShannessy <paul@oshannessy.com>
- Rob Arnold <tellrob@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
@ -236,6 +237,29 @@
null
</field>
<field name="_previewMode">
false
</field>
<method name="previewTab">
<parameter name="aTab"/>
<parameter name="aCallback"/>
<body>
<![CDATA[
let currentTab = this.selectedTab;
try {
// Suppress focus, ownership and selected tab changes
this._previewMode = true;
this.selectedTab = aTab;
aCallback();
} finally {
this.selectedTab = currentTab;
this._previewMode = false;
}
]]>
</body>
</method>
<method name="getBrowserAtIndex">
<parameter name="aIndex"/>
<body>
@ -843,7 +867,8 @@
if (this.mCurrentBrowser == newBrowser && !aForceUpdate)
return;
if (this.mCurrentTab != this.selectedTab)
// Preview mode should not reset the owner
if (!this._previewMode && this.mCurrentTab != this.selectedTab)
this.mCurrentTab.owner = null;
this._lastRelatedTab = null;
@ -897,7 +922,9 @@
}
}
this._fastFind.setDocShell(this.mCurrentBrowser.docShell);
// Don't switch the fast find - this tab switch is temporary
if (!this._previewMode)
this._fastFind.setDocShell(this.mCurrentBrowser.docShell);
// Update the window title.
this.updateTitlebar();
@ -935,18 +962,23 @@
}
}
// We've selected the new tab, so go ahead and notify listeners.
var event = document.createEvent("Events");
event.initEvent("TabSelect", true, false);
this.mCurrentTab.dispatchEvent(event);
// TabSelect events are suppressed during preview mode to avoid confusing extensions and other bits of code
// that might rely upon the other changes suppressed.
// Focus is suppressed in the event that the main browser window is minimized - focusing a tab would restore the window
if (!this._previewMode) {
// We've selected the new tab, so go ahead and notify listeners.
var event = document.createEvent("Events");
event.initEvent("TabSelect", true, false);
this.mCurrentTab.dispatchEvent(event);
// change focus to the new tab if nothing is focused, the old tab
// is focused or there is something in the new tab to focus. One
// specific case where focus is not changed is when the new tab
// has no focused element and a chrome element is focused.
if (!focusedChromeElement || focusedChromeElement == oldBrowser ||
fm.getFocusedElementForWindow(window.content, true, {}))
fm.setFocus(newBrowser, fm.FLAG_NOSCROLL);
// change focus to the new tab if nothing is focused, the old tab
// is focused or there is something in the new tab to focus. One
// specific case where focus is not changed is when the new tab
// has no focused element and a chrome element is focused.
if ((!focusedChromeElement || focusedChromeElement == oldBrowser ||
fm.getFocusedElementForWindow(window.content, true, {})))
fm.setFocus(newBrowser, fm.FLAG_NOSCROLL);
}
]]>
</body>
</method>

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@ -76,6 +76,12 @@ ifndef WINCE
DIRS += migration
endif
ifeq ($(MOZ_WIDGET_TOOLKIT),windows)
ifndef WINCE
DIRS += wintaskbar
endif
endif
ifdef MOZ_SAFE_BROWSING
DIRS += safebrowsing
endif

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@ -0,0 +1,60 @@
# ***** 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 Aero Peek
#
# The Initial Developer of the Original Code is
# Mozilla Corporation
# Portions created by the Initial Developer are Copyright (C) 2009
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
# Rob Arnold <tellrob@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 *****
DEPTH = ../../..
topsrcdir = @top_srcdir@
srcdir = @srcdir@
VPATH = @srcdir@
include $(DEPTH)/config/autoconf.mk
ifdef ENABLE_TESTS
DIRS += test
endif
MODULE = wintaskbar
_WINTASKBAR_FILES = \
preview-per-tab.jsm \
$(NULL)
include $(topsrcdir)/config/rules.mk
libs:: $(_WINTASKBAR_FILES)
$(NSINSTALL) -D $(DIST)/bin/modules/wintaskbar;
$(INSTALL) $(foreach f,$^,"$f") $(DIST)/bin/modules/wintaskbar

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@ -0,0 +1,647 @@
/* vim: se cin sw=2 ts=2 et :
* ***** 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 Mozilla code.
*
* The Initial Developer of the Original Code is
* Mozilla Corporation.
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Rob Arnold <robarnold@cmu.edu> (original author)
*
* 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 ***** */
/*
* This module implements the front end behavior for AeroPeek. Starting in
* Windows Vista, the taskbar began showing live thumbnail previews of windows
* when the user hovered over the window icon in the taskbar. Starting with
* Windows 7, the taskbar allows an application to expose its tabbed interface
* in the taskbar by showing thumbnail previews rather than the default window
* preview. Additionally, when a user hovers over a thumbnail (tab or window),
* they are shown a live preview of the window (or tab + its containing window).
*
* In Windows 7, a title, icon, close button and optional toolbar are shown for
* each preview. This feature does not make use of the toolbar. For window
* previews, the title is the window title and the icon the window icon. For
* tab previews, the title is the page title and the page's favicon. In both
* cases, the close button "does the right thing."
*
* The primary objects behind this feature are nsITaskbarTabPreview and
* nsITaskbarPreviewController. Each preview has a controller. The controller
* responds to the user's interactions on the taskbar and provides the required
* data to the preview for determining the size of the tab and thumbnail. The
* PreviewController class implements this interface. The preview will request
* the controller to provide a thumbnail or preview when the user interacts with
* the taskbar. To reduce the overhead of drawing the tab area, the controller
* implementation caches the tab's contents in a <canvas> element. If no
* previews or thumbnails have been requested for some time, the controller will
* discard its cached tab contents.
*
* Screen real estate is limited so when there are too many thumbnails to fit
* on the screen, the taskbar stops displaying thumbnails and instead displays
* just the title, icon and close button in a similar fashion to previous
* versions of the taskbar. If there are still too many previews to fit on the
* screen, the taskbar resorts to a scroll up and scroll down button pair to let
* the user scroll through the list of tabs. Since this is undoubtedly
* inconvenient for users with many tabs, the AeroPeek objects turns off all of
* the tab previews. This tells the taskbar to revert to one preview per window.
* If the number of tabs falls below this magic threshold, the preview-per-tab
* behavior returns. There is no reliable way to determine when the scroll
* buttons appear on the taskbar, so a magic pref-controlled number determines
* when this threshold has been crossed.
*/
var EXPORTED_SYMBOLS = ["AeroPeek"];
const Cc = Components.classes;
const Ci = Components.interfaces;
const Cu = Components.utils;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/NetUtil.jsm");
// Pref to enable/disable preview-per-tab
const TOGGLE_PREF_NAME = "aeropeek.enable";
// Pref to determine the magic auto-disable threshold
const DISABLE_THRESHOLD_PREF_NAME = "aeropeek.maxpreviews";
// Pref to control the time in seconds that tab contents live in the cache
const CACHE_EXPIRATION_TIME_PREF_NAME = "aeropeek.cachetime";
const WINTASKBAR_CONTRACTID = "@mozilla.org/windows-taskbar;1";
////////////////////////////////////////////////////////////////////////////////
//// Various utility properties
XPCOMUtils.defineLazyServiceGetter(this, "ioSvc",
"@mozilla.org/network/io-service;1",
"nsIIOService");
XPCOMUtils.defineLazyServiceGetter(this, "imgTools",
"@mozilla.org/image/tools;1",
"imgITools");
XPCOMUtils.defineLazyServiceGetter(this, "faviconSvc",
"@mozilla.org/browser/favicon-service;1",
"nsIFaviconService");
// nsIURI -> imgIContainer
function _imageFromURI(uri) {
let channel = ioSvc.newChannelFromURI(uri);
let out_img = { value: null };
let inputStream = channel.open();
try {
imgTools.decodeImageData(inputStream, channel.contentType, out_img);
return out_img.value;
} catch (e) {
return null;
}
}
// string -> imgIContainer
function _imageFromURL(url) {
return _imageFromURI(NetUtil.newURI(url));
}
// string? -> imgIContainer
function getFaviconAsImage(iconurl) {
return (iconurl ? _imageFromURL(iconurl) : false) ||
_imageFromURI(faviconSvc.defaultFavicon);
}
////////////////////////////////////////////////////////////////////////////////
//// PreviewController
/*
* This class manages the behavior of the preview.
*
* To give greater performance when drawing, the dirty areas of the content
* window are tracked and drawn on demand into a canvas of the same size.
* This provides a great increase in responsiveness when drawing a preview
* for unchanged (or even only slightly changed) tabs.
*
* @param win
* The TabWindow (see below) that owns the preview that this controls
* @param tab
* The <tab> that this preview is associated with
*/
function PreviewController(win, tab) {
this.win = win;
this.tab = tab;
this.linkedBrowser = tab.linkedBrowser;
this.linkedBrowser.addEventListener("MozAfterPaint", this, false);
this.linkedBrowser.addEventListener("DOMTitleChanged", this, false);
// pageshow is needed for when a tab is dragged across windows.
this.linkedBrowser.addEventListener("pageshow", this, false);
// Cannot perform the lookup during construction. See TabWindow.newTab
XPCOMUtils.defineLazyGetter(this, "preview", function () this.win.previewFromTab(this.tab));
XPCOMUtils.defineLazyGetter(this, "canvasPreview", function ()
this.win.win.document.createElementNS("http://www.w3.org/1999/xhtml", "canvas"));
XPCOMUtils.defineLazyGetter(this, "dirtyRegion",
function () {
let dirtyRegion = Cc["@mozilla.org/gfx/region;1"]
.createInstance(Ci.nsIScriptableRegion);
dirtyRegion.init();
return dirtyRegion;
});
}
PreviewController.prototype = {
QueryInterface: XPCOMUtils.generateQI([Ci.nsITaskbarPreviewController,
Ci.nsIDOMEventListener]),
destroy: function () {
this.linkedBrowser.removeEventListener("pageshow", this, false);
this.linkedBrowser.removeEventListener("DOMTitleChanged", this, false);
this.linkedBrowser.removeEventListener("MozAfterPaint", this, false);
},
get wrappedJSObject() {
return this;
},
get dirtyRects() {
let rectstream = this.dirtyRegion.getRects();
if (!rectstream)
return [];
let rects = [];
for (let i = 0; i < rectstream.length; i+= 4) {
let r = {x: rectstream[i],
y: rectstream[i+1],
width: rectstream[i+2],
height: rectstream[i+3]};
rects.push(r);
}
return rects;
},
// Resizes the canvasPreview to 0x0, essentially freeing its memory.
// updateCanvasPreview() will detect the size mismatch as a resize event
// the next time it is called.
resetCanvasPreview: function () {
this.canvasPreview.width = 0;
this.canvasPreview.height = 0;
},
// Updates the controller's canvas with the parts of the <browser> that need
// to be redrawn.
updateCanvasPreview: function () {
let win = this.linkedBrowser.contentWindow;
let bx = this.linkedBrowser.boxObject;
// Check for resize
if (bx.width != this.canvasPreview.width ||
bx.height != this.canvasPreview.height) {
// Invalidate the entire area and repaint
this.onTabPaint({left:0, top:0, width:bx.width, height:bx.height});
this.canvasPreview.width = bx.width;
this.canvasPreview.height = bx.height;
}
// Draw dirty regions
let ctx = this.canvasPreview.getContext("2d");
let flags = this.canvasPreviewFlags;
// width/height are occasionally bogus and too large for drawWindow
// so we clip to the canvas region
this.dirtyRegion.intersectRect(0, 0, bx.width, bx.height);
for each (let r in this.dirtyRects) {
let x = r.x;
let y = r.y;
let width = r.width;
let height = r.height;
ctx.save();
ctx.translate(x, y);
ctx.drawWindow(win, x, y, width, height, "white", flags);
ctx.restore();
}
this.dirtyRegion.setToRect(0,0,0,0);
// If we're updating the canvas, then we're in the middle of a peek so
// don't discard the cache of previews.
AeroPeek.resetCacheTimer();
},
onTabPaint: function (rect) {
// Ignore spurious dirty rects
if (!rect.width || !rect.height)
return;
let r = { x: Math.floor(rect.left),
y: Math.floor(rect.top),
width: Math.ceil(rect.width),
height: Math.ceil(rect.height)
};
this.dirtyRegion.unionRect(r.x, r.y, r.width, r.height);
},
//////////////////////////////////////////////////////////////////////////////
//// nsITaskbarPreviewController
get width() {
return this.win.width;
},
get height() {
return this.win.height;
},
get thumbnailAspectRatio() {
let boxObject = this.tab.linkedBrowser.boxObject;
// Avoid returning 0
let tabWidth = boxObject.width || 1;
// Avoid divide by 0
let tabHeight = boxObject.height || 1;
return tabWidth / tabHeight;
},
drawPreview: function (ctx) {
let self = this;
this.win.tabbrowser.previewTab(this.tab, function () self.previewTabCallback(ctx));
// We want a frame drawn around the preview
return true;
},
previewTabCallback: function (ctx) {
let width = this.win.width;
let height = this.win.height;
// Draw our toplevel window
ctx.drawWindow(this.win.win, 0, 0, width, height, "transparent");
// Compositor, where art thou?
// Draw the tab content on top of the toplevel window
this.updateCanvasPreview();
let boxObject = this.linkedBrowser.boxObject;
ctx.translate(boxObject.x, boxObject.y);
ctx.drawImage(this.canvasPreview, 0, 0);
},
drawThumbnail: function (ctx, width, height) {
this.updateCanvasPreview();
let scale = width/this.linkedBrowser.boxObject.width;
ctx.scale(scale, scale);
ctx.drawImage(this.canvasPreview, 0, 0);
// Don't draw a frame around the thumbnail
return false;
},
onClose: function () {
this.win.tabbrowser.removeTab(this.tab);
},
onActivate: function () {
this.win.tabbrowser.selectedTab = this.tab;
// Accept activation - this will restore the browser window
// if it's minimized
return true;
},
//// nsIDOMEventListener
handleEvent: function (evt) {
switch (evt.type) {
case "MozAfterPaint":
if (evt.originalTarget === this.linkedBrowser.contentWindow) {
let clientRects = evt.clientRects;
let length = clientRects.length;
for (let i = 0; i < length; i++) {
let r = clientRects.item(i);
this.onTabPaint(r);
}
}
let preview = this.preview;
if (preview.visible)
preview.invalidate();
break;
case "pageshow":
case "DOMTitleChanged":
// The tab's label is sometimes empty when dragging tabs between windows
// so we force the tab title to be updated (see bug 520579)
this.win.tabbrowser.setTabTitle(this.tab);
let title = this.tab.label;
this.preview.title = title;
this.preview.tooltip = title;
break;
}
}
};
XPCOMUtils.defineLazyGetter(PreviewController.prototype, "canvasPreviewFlags",
function () { let canvasInterface = Ci.nsIDOMCanvasRenderingContext2D;
return canvasInterface.DRAWWINDOW_DRAW_VIEW
| canvasInterface.DRAWWINDOW_DRAW_CARET
| canvasInterface.DRAWWINDOW_DO_NOT_FLUSH;
});
////////////////////////////////////////////////////////////////////////////////
//// TabWindow
/*
* This class monitors a browser window for changes to its tabs
*
* @param win
* The nsIDOMWindow browser window
*/
function TabWindow(win) {
this.win = win;
this.tabbrowser = win.gBrowser;
this.previews = [];
for each (let evtName in this.events)
this.tabbrowser.tabContainer.addEventListener(evtName, this, false);
this.tabbrowser.addTabsProgressListener(this);
AeroPeek.windows.push(this);
let tabs = this.tabbrowser.mTabs;
for (let i = 0; i < tabs.length; i++)
this.newTab(tabs[i]);
this.updateTabOrdering();
AeroPeek.checkPreviewCount();
}
TabWindow.prototype = {
_enabled: false,
events: ["TabOpen", "TabClose", "TabSelect", "TabMove"],
destroy: function () {
let tabs = this.tabbrowser.mTabs;
for (let i = 0; i < tabs.length; i++)
this.removeTab(tabs[i]);
let idx = AeroPeek.windows.indexOf(win.gTaskbarTabGroup);
AeroPeek.windows.splice(idx, 1);
AeroPeek.checkPreviewCount();
for each (let evtName in this.events)
this.tabbrowser.tabcontainer.removeEventListener(evtName, this, false);
},
get width () {
return this.win.innerWidth;
},
get height () {
return this.win.innerHeight;
},
// Invoked when the given tab is added to this window
newTab: function (tab) {
let controller = new PreviewController(this, tab);
let preview = AeroPeek.taskbar.createTaskbarTabPreview(this.tabbrowser.docShell, controller);
preview.title = tab.label;
preview.tooltip = tab.label;
preview.visible = AeroPeek.enabled;
preview.active = this.tabbrowser.selectedTab == tab;
// Grab the default favicon
preview.icon = getFaviconAsImage(null);
this.previews.splice(tab._tPos, 0, preview);
AeroPeek.addPreview(preview);
},
// Invoked when the given tab is closed
removeTab: function (tab) {
let preview = this.previewFromTab(tab);
preview.active = false;
preview.visible = false;
preview.move(null);
preview.controller.wrappedJSObject.destroy();
this.previews.splice(tab._tPos, 1);
AeroPeek.removePreview(preview);
},
get enabled () {
return this._enabled;
},
set enabled(enable) {
this._enabled = enable;
// Because making a tab visible requires that the tab it is next to be
// visible, it is far simpler to unset the 'next' tab and recreate them all
// at once.
for each (let preview in this.previews) {
preview.move(null);
preview.visible = enable;
}
this.updateTabOrdering();
},
previewFromTab: function (tab) {
return this.previews[tab._tPos];
},
updateTabOrdering: function () {
for (let i = 0; i < this.previews.length; i++) {
let p = this.previews[i];
let next = i == this.previews.length - 1 ? null : this.previews[i+1];
p.move(next);
}
},
//// nsIDOMEventListener
handleEvent: function (evt) {
let tab = evt.originalTarget;
switch (evt.type) {
case "TabOpen":
this.newTab(tab);
this.updateTabOrdering();
break;
case "TabClose":
this.removeTab(tab);
this.updateTabOrdering();
break;
case "TabSelect":
this.previewFromTab(tab).active = true;
break;
case "TabMove":
let oldPos = evt.detail;
let newPos = tab._tPos;
let preview = this.previews[oldPos];
this.previews.splice(oldPos, 1);
this.previews.splice(newPos, 0, preview);
this.updateTabOrdering();
break;
}
},
//// Browser progress listener
onLocationChange: function () {
},
onProgressChange: function () {
},
onSecurityChange: function () {
},
onStateChange: function () {
},
onStatusChange: function () {
},
onLinkIconAvailable: function (aBrowser) {
let img = getFaviconAsImage(aBrowser.mIconURL);
for each (let tab in this.tabbrowser.mTabs)
if (tab.linkedBrowser == aBrowser)
this.previewFromTab(tab).icon = img;
}
}
////////////////////////////////////////////////////////////////////////////////
//// AeroPeek
/*
* This object acts as global storage and external interface for this feature.
* It maintains the values of the prefs.
*/
var AeroPeek = {
available: false,
// Does the pref say we're enabled?
_prefenabled: true,
_enabled: true,
// nsITaskbarTabPreview array
previews: [],
// TabWindow array
windows: [],
// nsIWinTaskbar service
taskbar: null,
// Maximum number of previews
maxpreviews: 20,
// Length of time in seconds that previews are cached
cacheLifespan: 20,
initialize: function () {
if (!(WINTASKBAR_CONTRACTID in Cc))
return;
this.taskbar = Cc[WINTASKBAR_CONTRACTID].getService(Ci.nsIWinTaskbar);
this.available = this.taskbar.available;
if (!this.available)
return;
this.prefs.addObserver(TOGGLE_PREF_NAME, this, false);
this.prefs.addObserver(DISABLE_THRESHOLD_PREF_NAME, this, false);
this.prefs.addObserver(CACHE_EXPIRATION_TIME_PREF_NAME, this, false);
this.cacheLifespan = this.prefs.getIntPref(CACHE_EXPIRATION_TIME_PREF_NAME);
this.maxpreviews = this.prefs.getIntPref(DISABLE_THRESHOLD_PREF_NAME);
this.enabled = this._prefenabled = this.prefs.getBoolPref(TOGGLE_PREF_NAME);
},
get enabled() {
return this._enabled;
},
set enabled(enable) {
if (this._enabled == enable) return;
this._enabled = enable;
for each (let win in this.windows)
win.enabled = enable;
},
addPreview: function (preview) {
this.previews.push(preview);
this.checkPreviewCount();
},
removePreview: function (preview) {
let idx = this.previews.indexOf(preview);
this.previews.splice(idx, 1);
this.checkPreviewCount();
},
checkPreviewCount: function () {
if (this.previews.length > this.maxpreviews)
this.enabled = false;
else
this.enabled = this._prefenabled;
},
onOpenWindow: function (win) {
// This occurs when the taskbar service is not available (xp, vista)
if (!this.available)
return;
win.gTaskbarTabGroup = new TabWindow(win);
},
onCloseWindow: function (win) {
// This occurs when the taskbar service is not available (xp, vista)
if (!this.available)
return;
win.gTaskbarTabGroup.destroy();
win.gTaskbarTabGroup = null;
},
resetCacheTimer: function () {
this.cacheTimer.cancel();
this.cacheTimer.init(this, 1000*this.cacheLifespan, Ci.nsITimer.TYPE_ONE_SHOT);
},
//// nsIObserver
observe: function (aSubject, aTopic, aData) {
switch (aTopic) {
case "nsPref:changed":
if (aData == CACHE_EXPIRATION_TIME_PREF_NAME) {
break;
}
if (aData == TOGGLE_PREF_NAME)
this._prefenabled = this.prefs.getBoolPref(TOGGLE_PREF_NAME);
else if (aData == DISABLE_THRESHOLD_PREF_NAME)
this.maxpreviews = this.prefs.getIntPref(DISABLE_THRESHOLD_PREF_NAME);
// Might need to enable/disable ourselves
this.checkPreviewCount();
break;
case "timer-callback":
for each (let preview in this.previews) {
let controller = preview.controller.wrappedJSObject;
controller.resetCanvasPreview();
}
break;
}
}
};
XPCOMUtils.defineLazyGetter(AeroPeek, "cacheTimer", function ()
Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer)
);
XPCOMUtils.defineLazyServiceGetter(AeroPeek, "prefs",
"@mozilla.org/preferences-service;1",
"nsIPrefBranch2");
AeroPeek.initialize();

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@ -0,0 +1,54 @@
#
# ***** 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 mozilla.org code.
#
# The Initial Developer of the Original Code is
# Mozilla Corporation.
# Portions created by the Initial Developer are Copyright (C) 2009
# the Initial Developer. All Rights Reserved.
#
# Contributor(s):
# Rob Arnold <robarnold@cmu.edu>
#
# Alternatively, the contents of this file may be used under the terms of
# either of 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 *****
DEPTH = ../../../..
topsrcdir = @top_srcdir@
srcdir = @srcdir@
VPATH = @srcdir@
relativesrcdir = browser/components/wintaskbar/test
include $(DEPTH)/config/autoconf.mk
include $(topsrcdir)/config/rules.mk
_BROWSER_FILES = browser_taskbar_preview.js \
$(NULL)
libs:: $(_BROWSER_FILES)
$(INSTALL) $(foreach f,$^,"$f") $(DEPTH)/_tests/testing/mochitest/browser/$(relativesrcdir)

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function test() {
waitForExplicitFinish();
// Cannot do anything if the taskbar service is not available
ok(AeroPeek.available == isWin7OrHigher(), "AeroPeek initialized when it should be");
// Entire feature is disabled
if (!AeroPeek.available)
return;
gPrefService.setBoolPref("aeropeek.enable", true);
is(1, AeroPeek.windows.length, "Got the expected number of windows");
checkPreviews(1, "Browser starts with one preview");
gBrowser.addTab();
gBrowser.addTab();
gBrowser.addTab();
checkPreviews(4, "Correct number of previews after adding");
for each (let preview in AeroPeek.previews)
ok(preview.visible, "Preview is shown as expected");
gPrefService.setBoolPref("aeropeek.enable", false);
checkPreviews(4, "Previews are unchanged when disabling");
for each (let preview in AeroPeek.previews)
ok(!preview.visible, "Preview is not shown as expected after disabling");
gPrefService.setBoolPref("aeropeek.enable", true);
checkPreviews(4, "Previews are unchanged when re-enabling");
for each (let preview in AeroPeek.previews)
ok(preview.visible, "Preview is shown as expected after re-enabling");
[1,2,3,4].forEach(function (idx) {
gBrowser.selectedTab = gBrowser.mTabs[idx];
ok(checkSelectedTab(), "Current tab is correctly selected");
});
let currentSelectedTab = gBrowser.selectedTab;
for each (let idx in [1,2,3,4]) {
let preview = getPreviewForTab(gBrowser.mTabs[0]);
let canvas = createThumbnailSurface(preview);
let ctx = canvas.getContext("2d");
preview.controller.drawThumbnail(ctx, canvas.width, canvas.height);
ok(currentSelectedTab == gBrowser.selectedTab, "Drawing thumbnail does not change selection");
canvas = getCanvas(preview.controller.width, preview.controller.height);
ctx = canvas.getContext("2d");
preview.controller.drawPreview(ctx);
ok(currentSelectedTab == gBrowser.selectedTab, "Drawing preview does not change selection");
}
// Close #4
getPreviewForTab(gBrowser.selectedTab).controller.onClose();
checkPreviews(3, "Expected number of previews after closing selected tab via controller");
ok(gBrowser.mTabs.length == 3, "Successfully closed a tab");
// Select #1
ok(getPreviewForTab(gBrowser.mTabs[0]).controller.onActivate(), "Activation was accepted");
ok(gBrowser.mTabs[0] == gBrowser.selectedTab, "Correct tab was selected");
checkSelectedTab();
// Remove #3 (non active)
gBrowser.removeTab(gBrowser.tabContainer.lastChild);
checkPreviews(2, "Expected number of previews after closing unselected via browser");
// Remove #1 (active)
gBrowser.removeTab(gBrowser.tabContainer.firstChild);
checkPreviews(1, "Expected number of previews after closing selected tab via browser");
// Add a new tab
gBrowser.addTab();
checkPreviews(2);
// Check default selection
checkSelectedTab();
// Change selection
gBrowser.selectedTab = gBrowser.mTabs[0];
checkSelectedTab();
// Close nonselected tab via controller
getPreviewForTab(gBrowser.mTabs[1]).controller.onClose();
checkPreviews(1);
gPrefService.clearUserPref("aeropeek.enable");
finish();
function checkPreviews(aPreviews, msg) {
let nPreviews = AeroPeek.previews.length;
is(aPreviews, gBrowser.mTabs.length, "Browser has expected number of tabs");
is(nPreviews, gBrowser.mTabs.length, "Browser has one preview per tab");
is(nPreviews, aPreviews, msg || "Got expected number of previews");
}
function isWin7OrHigher() {
try {
var sysInfo = Cc["@mozilla.org/system-info;1"].
getService(Ci.nsIPropertyBag2);
var ver = parseFloat(sysInfo.getProperty("version"));
if (ver >= 6.1)
return true;
} catch (ex) { }
return false;
}
function getPreviewForTab(tab)
window.gTaskbarTabGroup.previewFromTab(tab);
function checkSelectedTab()
getPreviewForTab(gBrowser.selectedTab).active;
function isTabSelected(idx)
gBrowser.selectedTab == gBrowser.mTabs[idx];
function createThumbnailSurface(p) {
let thumbnailWidth = 200,
thumbnailHeight = 120;
let ratio = p.controller.thumbnailAspectRatio;
if (thumbnailWidth/thumbnailHeight > ratio)
thumbnailWidth = thumbnailHeight * ratio;
else
thumbnailHeight = thumbnailWidth / ratio;
return getCanvas(thumbnailWidth, thumbnailHeight);
}
function getCanvas(width, height) {
let win = window.QueryInterface(Ci.nsIDOMWindowInternal);
let doc = win.document;
let canvas = doc.createElementNS("http://www.w3.org/1999/xhtml", "canvas");
canvas.width = width;
canvas.height = height;
return canvas;
}
}