Bug 233721 Add confirmation for Set As Wallpaper p=stefan@borggraefe.com r=me sr=tor

suite/common/nsContextMenu.js

@@ -610,6 +610,21 @@ nsContextMenu.prototype = {
         openTopWin( this.bgImageURL );
     },
     setWallpaper: function() {
+      // Confirm since it's annoying if you hit this accidentally.
+      var promptService       = Components.classes["@mozilla.org/embedcomp/prompt-service;1"].getService(Components.interfaces.nsIPromptService);
+      var gNavigatorBundle    = document.getElementById("bundle_navigator");
+      var promptTitle         = gNavigatorBundle.getString("wallpaperConfirmTitle");
+      var promptMsg           = gNavigatorBundle.getString("wallpaperConfirmMsg");
+      var promptConfirmButton = gNavigatorBundle.getString("wallpaperConfirmButton");
+
+      var buttonPressed = promptService.confirmEx(window, promptTitle, promptMsg,
+                                                   (promptService.BUTTON_TITLE_IS_STRING * promptService.BUTTON_POS_0) +
+                                                   (promptService.BUTTON_TITLE_CANCEL    * promptService.BUTTON_POS_1),
+                                                   promptConfirmButton, null, null, null, {value:0});
+ 
+      if (buttonPressed != 0)
+        return;
+
       var winhooks = Components.classes[ "@mozilla.org/winhooks;1" ].
                        getService(Components.interfaces.nsIWindowsHooks);