[Chromoting] Let the Windows IT2Me host send clipboard events to the client.

remoting/host/clipboard_win.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "remoting/host/clipboard.h"
 
 #include <windows.h>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/process_util.h"
 #include "base/string16.h"
 #include "base/utf_string_conversions.h"
 #include "base/win/scoped_hglobal.h"
 #include "base/win/windows_version.h"
 #include "base/win/wrapped_window_proc.h"
 #include "remoting/base/constants.h"
 #include "remoting/proto/event.pb.h"
+#include "remoting/protocol/clipboard_stub.h"
 
 namespace {
 
 const WCHAR kWindowClassName[] = L"clipboardWindowClass";
 const WCHAR kWindowName[] = L"clipboardWindow";
 
 // A scoper class that opens and closes the clipboard.
 // This class was adapted from the ScopedClipboard class in
 // ui/base/clipboard/clipboard_win.cc.
 class ScopedClipboard {
@@ skipping 66 matching lines @@
 typedef BOOL (WINAPI RemoveClipboardFormatListenerFn)(HWND);
 
 }  // namespace
 
 namespace remoting {
 
 class ClipboardWin : public Clipboard {
  public:
   ClipboardWin();
 
-  virtual void Start() OVERRIDE;
+  virtual void Start(
+      scoped_ptr<protocol::ClipboardStub> client_clipboard) OVERRIDE;
   virtual void InjectClipboardEvent(
       const protocol::ClipboardEvent& event) OVERRIDE;
   virtual void Stop() OVERRIDE;
 
  private:
   void OnClipboardUpdate();
   bool HaveClipboardListenerApi();
 
   static bool RegisterWindowClass();
   static LRESULT CALLBACK WndProc(HWND hwmd, UINT msg, WPARAM wParam,
                                   LPARAM lParam);
 
+  scoped_ptr<protocol::ClipboardStub> client_clipboard_;
   HWND hwnd_;
   AddClipboardFormatListenerFn* add_clipboard_format_listener_;
   RemoveClipboardFormatListenerFn* remove_clipboard_format_listener_;
   bool load_functions_tried_;
 
   DISALLOW_COPY_AND_ASSIGN(ClipboardWin);
 };
 
 ClipboardWin::ClipboardWin()
     : hwnd_(NULL),
       add_clipboard_format_listener_(NULL),
       remove_clipboard_format_listener_(NULL),
       load_functions_tried_(false) {
 }
 
-void ClipboardWin::Start() {
+void ClipboardWin::Start(
+    scoped_ptr<protocol::ClipboardStub> client_clipboard) {
+  client_clipboard_.swap(client_clipboard);
+
   if (!load_functions_tried_) {
     load_functions_tried_ = true;
     HMODULE user32_module = ::GetModuleHandle(L"user32.dll");
     if (!user32_module) {
       LOG(WARNING) << "Couldn't find user32.dll.";
     } else {
       add_clipboard_format_listener_ =
           reinterpret_cast<AddClipboardFormatListenerFn*>(
               ::GetProcAddress(user32_module, "AddClipboardFormatListener"));
       remove_clipboard_format_listener_ =
@@ skipping 23 matching lines @@
   }
 
   if (HaveClipboardListenerApi()) {
     if (!(*add_clipboard_format_listener_)(hwnd_)) {
       LOG(WARNING) << "AddClipboardFormatListener() failed: " << GetLastError();
     }
   }
 }
 
 void ClipboardWin::Stop() {
+  client_clipboard_.reset();
+
   if (hwnd_) {
     if (HaveClipboardListenerApi()) {
       (*remove_clipboard_format_listener_)(hwnd_);
     }
     ::DestroyWindow(hwnd_);
     hwnd_ = NULL;
   }
 }
 
 void ClipboardWin::InjectClipboardEvent(
@@ skipping 57 matching lines @@
         LOG(WARNING) << "Couldn't lock clipboard data: " << GetLastError();
         return;
       }
       text.assign(text_lock.get());
     }
 
     protocol::ClipboardEvent event;
     event.set_mime_type(kMimeTypeTextUtf8);
     event.set_data(UTF16ToUTF8(text));
 
-    // TODO(simonmorris): Send the event to the client.
+    if (client_clipboard_.get()) {
+      client_clipboard_->InjectClipboardEvent(event);
+    }
   }
 }
 
 bool ClipboardWin::HaveClipboardListenerApi() {
   return add_clipboard_format_listener_ && remove_clipboard_format_listener_;
 }
 
 bool ClipboardWin::RegisterWindowClass() {
   // This method is only called on the UI thread, so it doesn't matter
   // that the following test is not thread-safe.
@@ skipping 33 matching lines @@
       return 0;
   }
   return ::DefWindowProc(hwnd, msg, wparam, lparam);
 }
 
 scoped_ptr<Clipboard> Clipboard::Create() {
   return scoped_ptr<Clipboard>(new ClipboardWin());
 }
 
 }  // namespace remoting