The Tor Browser / file revision

 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

 /* 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/. */

 #include "nsString.h"

 #import <CoreServices/CoreServices.h>

 #import <Cocoa/Cocoa.h>

 #include "nsCOMPtr.h"

 #include "nsNativeAppSupportBase.h"

 #include "nsIAppShellService.h"

 #include "nsIAppStartup.h"

 #include "nsIBaseWindow.h"

 #include "nsICommandLineRunner.h"

 #include "nsIDOMWindow.h"

 #include "nsIDocShellTreeItem.h"

 #include "nsIDocShellTreeOwner.h"

 #include "nsIInterfaceRequestorUtils.h"

 #include "nsIObserver.h"

 #include "nsIServiceManager.h"

 #include "nsIWebNavigation.h"

 #include "nsIWidget.h"

 #include "nsIWindowMediator.h"

 // This must be included last:

 #include "nsObjCExceptions.h"

 nsresult

 GetNativeWindowPointerFromDOMWindow(nsIDOMWindow *a_window, NSWindow **a_nativeWindow)

 {

   *a_nativeWindow = nil;

   if (!a_window)

     return NS_ERROR_INVALID_ARG;

   nsCOMPtr<nsIWebNavigation> mruWebNav(do_GetInterface(a_window));

   if (mruWebNav) {

     nsCOMPtr<nsIDocShellTreeItem> mruTreeItem(do_QueryInterface(mruWebNav));

     nsCOMPtr<nsIDocShellTreeOwner> mruTreeOwner = nullptr;

     mruTreeItem->GetTreeOwner(getter_AddRefs(mruTreeOwner));

     if(mruTreeOwner) {

       nsCOMPtr<nsIBaseWindow> mruBaseWindow(do_QueryInterface(mruTreeOwner));

       if (mruBaseWindow) {

         nsCOMPtr<nsIWidget> mruWidget = nullptr;

         mruBaseWindow->GetMainWidget(getter_AddRefs(mruWidget));

         if (mruWidget) {

           *a_nativeWindow = (NSWindow*)mruWidget->GetNativeData(NS_NATIVE_WINDOW);

         }

       }

     }

   }

   return NS_OK;

 }

 class nsNativeAppSupportCocoa : public nsNativeAppSupportBase

 {

 public:

   nsNativeAppSupportCocoa() :

     mCanShowUI(false) { }

   NS_IMETHOD Start(bool* aRetVal);

   NS_IMETHOD ReOpen();

   NS_IMETHOD Enable();

 private:

   bool mCanShowUI;

 };

 NS_IMETHODIMP

 nsNativeAppSupportCocoa::Enable()

 {

   mCanShowUI = true;

   return NS_OK;

 }

 #define MAC_OS_X_VERSION_10_6_HEX 0x00001060

 NS_IMETHODIMP nsNativeAppSupportCocoa::Start(bool *_retval)

 {

   NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;

   SInt32 response = 0;

   OSErr err = ::Gestalt (gestaltSystemVersion, &response);

   response &= 0xFFFF; // The system version is in the low order word

   // Check that the OS version is supported, if not return false,

   // which will make the browser quit.  In principle we could display an

   // alert here.  But the alert's message and buttons would require custom

   // localization.  So (for now at least) we just log an English message

   // to the console before quitting.

   if ((err != noErr) || response < MAC_OS_X_VERSION_10_6_HEX) {

     NSLog(@"Minimum OS version requirement not met!");

     return NS_OK;

   }

   *_retval = true;

   return NS_OK;

   NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;

 }

 NS_IMETHODIMP

 nsNativeAppSupportCocoa::ReOpen()

 {

   NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;

   if (!mCanShowUI)

     return NS_ERROR_FAILURE;

   bool haveNonMiniaturized = false;

   bool haveOpenWindows = false;

   bool done = false;

   nsCOMPtr<nsIWindowMediator> 

     wm(do_GetService(NS_WINDOWMEDIATOR_CONTRACTID));

   if (!wm) {

     return NS_ERROR_FAILURE;

   } 

   else {

     nsCOMPtr<nsISimpleEnumerator> windowList;

     wm->GetXULWindowEnumerator(nullptr, getter_AddRefs(windowList));

     bool more;

     windowList->HasMoreElements(&more);

     while (more) {

       nsCOMPtr<nsISupports> nextWindow = nullptr;

       windowList->GetNext(getter_AddRefs(nextWindow));

       nsCOMPtr<nsIBaseWindow> baseWindow(do_QueryInterface(nextWindow));

       if (!baseWindow) {

         windowList->HasMoreElements(&more);

         continue;

       }

       else {

         haveOpenWindows = true;

       }

       nsCOMPtr<nsIWidget> widget = nullptr;

       baseWindow->GetMainWidget(getter_AddRefs(widget));

       if (!widget) {

         windowList->HasMoreElements(&more);

         continue;

       }

       NSWindow *cocoaWindow = (NSWindow*)widget->GetNativeData(NS_NATIVE_WINDOW);

       if (![cocoaWindow isMiniaturized]) {

         haveNonMiniaturized = true;

         break;  //have un-minimized windows, nothing to do

       } 

       windowList->HasMoreElements(&more);

     } // end while

     if (!haveNonMiniaturized) {

       // Deminiaturize the most recenty used window

       nsCOMPtr<nsIDOMWindow> mru;

       wm->GetMostRecentWindow(nullptr, getter_AddRefs(mru));

       if (mru) {        

         NSWindow *cocoaMru = nil;

         GetNativeWindowPointerFromDOMWindow(mru, &cocoaMru);

         if (cocoaMru) {

           [cocoaMru deminiaturize:nil];

           done = true;

         }

       }

     } // end if have non miniaturized

     if (!haveOpenWindows && !done) {

       char* argv[] = { nullptr };

       // use an empty command line to make the right kind(s) of window open

       nsCOMPtr<nsICommandLineRunner> cmdLine

         (do_CreateInstance("@mozilla.org/toolkit/command-line;1"));

       NS_ENSURE_TRUE(cmdLine, NS_ERROR_FAILURE);

       nsresult rv;

       rv = cmdLine->Init(0, argv, nullptr,

                          nsICommandLine::STATE_REMOTE_EXPLICIT);

       NS_ENSURE_SUCCESS(rv, rv);

       return cmdLine->Run();

     }

   } // got window mediator

   return NS_OK;

   NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;

 }

 #pragma mark -

 // Create and return an instance of class nsNativeAppSupportCocoa.

 nsresult NS_CreateNativeAppSupport(nsINativeAppSupport**aResult)

 {

   *aResult = new nsNativeAppSupportCocoa;

   if (!*aResult) return NS_ERROR_OUT_OF_MEMORY;

   NS_ADDREF(*aResult);

   return NS_OK;

 }