Bug 580522 - Need a user-visible pref to disable Aero Peek r=gavin ui-r+a=beltzner

browser/components/preferences/tabs.js

@@ -60,8 +60,27 @@ var gTabsPane = {
    * browser.tabs.warnOnOpen
    * - true if the user should be warned if he attempts to open a lot of tabs at
    *   once (e.g. a large folder of bookmarks), false otherwise
+   * browser.taskbar.previews.enable
+   * - true if tabs are to be shown in the Windows 7 taskbar
    */
 
+#ifdef XP_WIN
+  /**
+   * Initialize any platform-specific UI.
+   */
+  init: function () {
+    const Cc = Components.classes;
+    const Ci = Components.interfaces;
+    try {
+      let sysInfo = Cc["@mozilla.org/system-info;1"].
+                    getService(Ci.nsIPropertyBag2);
+      let ver = parseFloat(sysInfo.getProperty("version"));
+      let showTabsInTaskbar = document.getElementById("showTabsInTaskbar");
+      showTabsInTaskbar.hidden = ver < 6.1;
+    } catch (ex) {}
+  },
+#endif
+
   /**
    * Determines where a link which opens a new window will open.
    *

browser/components/preferences/tabs.xul

@@ -50,6 +50,9 @@
          xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
 
   <prefpane id="paneTabs"
+#ifdef XP_WIN
+            onpaneload="gTabsPane.init();"
+#endif
             helpTopic="prefs-tabs">
 
     <preferences id="tabsPreferences">
@@ -58,6 +61,9 @@
       <preference id="browser.tabs.loadInBackground"   name="browser.tabs.loadInBackground"   type="bool" inverted="true"/>
       <preference id="browser.tabs.warnOnClose"        name="browser.tabs.warnOnClose"        type="bool"/>
       <preference id="browser.tabs.warnOnOpen"         name="browser.tabs.warnOnOpen"         type="bool"/>
+#ifdef XP_WIN
+      <preference id="browser.taskbar.previews.enable" name="browser.taskbar.previews.enable" type="bool"/>
+#endif
     </preferences>
     
     <script type="application/javascript" src="chrome://browser/content/preferences/tabs.js"/>
@@ -82,6 +88,11 @@
       <checkbox id="switchToNewTabs" label="&switchToNewTabs.label;"
                 accesskey="&switchToNewTabs.accesskey;"
                 preference="browser.tabs.loadInBackground"/>
+#ifdef XP_WIN
+      <checkbox id="showTabsInTaskbar" label="&showTabsInTaskbar.label;"
+                accesskey="&showTabsInTaskbar.accesskey;"
+                preference="browser.taskbar.previews.enable"/>
+#endif
     </vbox>
 
   </prefpane>

browser/locales/en-US/chrome/browser/preferences/tabs.dtd

@@ -12,3 +12,6 @@
 
 <!ENTITY switchToNewTabs.label        "When I open a link in a new tab, switch to it immediately">
 <!ENTITY switchToNewTabs.accesskey    "s">
+
+<!ENTITY showTabsInTaskbar.label          "Show tab previews in the Windows taskbar">
+<!ENTITY showTabsInTaskbar.accesskey      "k">