Bug 127337. Restore Default for Home Page button in Navigator. Patch by Stephen Walker <walk84@yahoo.com> r=samir, sr=alecf.

suite/common/pref/pref-navigator.js

@@ -4,9 +4,12 @@
 
 const nsIFilePicker     = Components.interfaces.nsIFilePicker;
 const nsIWindowMediator = Components.interfaces.nsIWindowMediator;
+const nsIPrefService    = Components.interfaces.nsIPrefService;
+const nsIPrefLocalizedString = Components.interfaces.nsIPrefLocalizedString;
 
 const FILEPICKER_CONTRACTID     = "@mozilla.org/filepicker;1";
 const WINDOWMEDIATOR_CONTRACTID = "@mozilla.org/appshell/window-mediator;1";
+const PREFSERVICE_CONTRACTID    = "@mozilla.org/preferences-service;1";
 
 function selectFile()
 {
@@ -42,3 +45,16 @@ function setHomePageToCurrentPage()
     }
   }
 }
+
+function setHomePageToDefaultPage()
+{
+  var prefService = Components.classes[PREFSERVICE_CONTRACTID]
+                              .getService(nsIPrefService);
+  var pref = prefService.getDefaultBranch(null);
+  var url = pref.getComplexValue("browser.startup.homepage",
+                                  nsIPrefLocalizedString).data;
+  var homePageField = document.getElementById("browserStartupHomepage");
+  homePageField.value = url;
+}
+
+  

suite/common/pref/pref-navigator.xul

@@ -39,7 +39,7 @@
     var _elementIDs = ["startupPage", "browserStartupHomepage",
                        "bookmarksButton", "goButton",
                        "homeButton", "printButton",
-                       "searchButton" ];
+                       "searchButton"];
   ]]>
   </script>
   
@@ -75,6 +75,10 @@
                 oncommand="selectFile();"
                 id="browserChooseFile"
                 prefstring="pref.browser.homepage.disable_button.select_file"/>
+        <button label="&useDefault.label;" accesskey="&useDefault.accesskey;"
+                oncommand="setHomePageToDefaultPage();"
+                id="browserUseDefault"
+                prefstring="pref.browser.homepage.disable_button.default_page"/>
       </hbox>
     </vbox>
   </groupbox>

suite/locales/en-US/chrome/common/pref/pref-navigator.dtd

@@ -16,6 +16,8 @@
 <!ENTITY  useCurrent.accesskey      "u">
 <!ENTITY  browseFile.label          "Choose File...">
 <!ENTITY  browseFile.accesskey      "c">
+<!ENTITY  useDefault.label          "Restore Default">
+<!ENTITY  useDefault.accesskey      "r">
 
 <!ENTITY  toolbarIntro.label        "Select the buttons you want to see in the toolbars">