Bug 1165321 - focus existing window if Firefox is already open in tablet mode, r=jaws

--HG--
extra : commitid : E96QcAy8k5s
extra : rebase_source : b79523b4d46f8b4a91015bab28226f3bae014794

browser/components/moz.build

@@ -37,10 +37,13 @@ XPIDL_MODULE = 'browsercompsbase'
 
 EXTRA_PP_COMPONENTS += [
     'BrowserComponents.manifest',
-    'nsBrowserContentHandler.js',
     'nsBrowserGlue.js',
 ]
 
+EXTRA_COMPONENTS += [
+    'nsBrowserContentHandler.js',
+]
+
 EXTRA_JS_MODULES += [
     'distribution.js',
 ]

browser/components/nsBrowserContentHandler.js

@@ -1,14 +1,17 @@
-# 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/.
+/* 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/. */
 
 Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
 Components.utils.import("resource://gre/modules/Services.jsm");
+Components.utils.import("resource://gre/modules/AppConstants.jsm");
 
 XPCOMUtils.defineLazyModuleGetter(this, "PrivateBrowsingUtils",
                                   "resource://gre/modules/PrivateBrowsingUtils.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "RecentWindow",
                                   "resource:///modules/RecentWindow.jsm");
+XPCOMUtils.defineLazyServiceGetter(this, "WindowsUIUtils",
+                                   "@mozilla.org/windows-ui-utils;1", "nsIWindowsUIUtils");
 
 const nsISupports            = Components.interfaces.nsISupports;
 
@@ -452,7 +455,7 @@ nsBrowserContentHandler.prototype = {
       cmdLine.preventDefault = true;
     }
 
-#ifdef XP_WIN
+    if (AppConstants.platform  == "win") {
       // Handle "? searchterm" for Windows Vista start menu integration
       for (var i = cmdLine.length - 1; i >= 0; --i) {
         var param = cmdLine.getArgument(i);
@@ -464,19 +467,23 @@ nsBrowserContentHandler.prototype = {
           doSearch(searchParam, cmdLine);
         }
       }
-#endif
+    }
   },
 
-  helpInfo : "  --browser          Open a browser window.\n" +
+  get helpInfo() {
+    let info =
+              "  --browser          Open a browser window.\n" +
               "  --new-window <url> Open <url> in a new window.\n" +
               "  --new-tab <url>    Open <url> in a new tab.\n" +
-             "  --private-window <url> Open <url> in a new private window.\n" +
-#ifdef XP_WIN
-             "  --preferences      Open Options dialog.\n" +
-#else
-             "  --preferences      Open Preferences dialog.\n" +
-#endif
-             "  --search <term>    Search <term> with your default search engine.\n",
+              "  --private-window <url> Open <url> in a new private window.\n";
+    if (AppConstants.platform == "win") {
+      info += "  --preferences      Open Options dialog.\n";
+    } else {
+      info += "  --preferences      Open Preferences dialog.\n";
+    }
+    info += "  --search <term>    Search <term> with your default search engine.\n";
+    return info;
+  },
 
   /* nsIBrowserHandler */
 
@@ -687,15 +694,13 @@ nsDefaultCommandLineHandler.prototype = {
     return this;
   },
 
-#ifdef XP_WIN
   _haveProfile: false,
-#endif
 
   /* nsICommandLineHandler */
   handle : function dch_handle(cmdLine) {
     var urilist = [];
 
-#ifdef XP_WIN
+    if (AppConstants.platform == "win") {
       // If we don't have a profile selected yet (e.g. the Profile Manager is
       // displayed) we will crash if we open an url and then select a profile. To
       // prevent this handle all url command line flags and set the command line's
@@ -715,7 +720,7 @@ nsDefaultCommandLineHandler.prototype = {
           cmdLine.preventDefault = true;
         }
       }
-#endif
+    }
 
     try {
       var ar;
@@ -767,6 +772,16 @@ nsDefaultCommandLineHandler.prototype = {
 
     }
     else if (!cmdLine.preventDefault) {
+      if (AppConstants.isPlatformAndVersionAtLeast("win", "10") &&
+          cmdLine.state != nsICommandLine.STATE_INITIAL_LAUNCH &&
+          WindowsUIUtils.inTabletMode) {
+        // In windows 10 tablet mode, do not create a new window, but reuse the existing one.
+        let win = RecentWindow.getMostRecentBrowserWindow();
+        if (win) {
+          win.focus();
+          return;
+        }
+      }
       // Passing defaultArgs, so use NO_EXTERNAL_URIS
       openWindow(null, gBrowserContentHandler.chromeURL, "_blank",
                  "chrome,dialog=no,all" + gBrowserContentHandler.getFeatures(cmdLine),