Mac: Simulate the OS-level focus handling that windows and linux plugins...

chrome/browser/plugin_process_host_mac.cc

 // Copyright (c) 2009 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 <Carbon/Carbon.h>
 
 #include "build/build_config.h"
 
 #include <vector>
 
 #include "base/logging.h"
 #include "base/mac_util.h"
 #include "chrome/browser/chrome_thread.h"
 #include "chrome/browser/plugin_process_host.h"
+#include "chrome/common/plugin_messages.h"
+
 
 void PluginProcessHost::OnPluginSelectWindow(uint32 window_id,
                                              gfx::Rect window_rect,
                                              bool modal) {
   plugin_visible_windows_set_.insert(window_id);
   if (modal)
     plugin_modal_windows_set_.insert(window_id);
 }
 
 void PluginProcessHost::OnPluginShowWindow(uint32 window_id,
@@ skipping 43 matching lines @@
   DCHECK(ChromeThread::CurrentlyOn(ChromeThread::IO));
 
   // If our plugin process has any modal windows up, we need to bring it forward
   // so that they act more like an in-process modal window would.
   if (!plugin_modal_windows_set_.empty()) {
     ChromeThread::PostTask(
         ChromeThread::UI, FROM_HERE,
         NewRunnableFunction(mac_util::ActivateProcess, handle()));
   }
 }
+
+void PluginProcessHost::OnPluginReceivedFocus(int process_id, int instance_id) {
+  DCHECK(ChromeThread::CurrentlyOn(ChromeThread::IO));
+  // A plugin has received keyboard focus, so tell all other plugin processes
+  // that they no longer have it (simulating the OS-level focus notifications
+  // that Gtk and Windows provide).
+  for (ChildProcessHost::Iterator iter(ChildProcessInfo::PLUGIN_PROCESS);
+       !iter.Done(); ++iter) {
+    PluginProcessHost* plugin = static_cast<PluginProcessHost*>(*iter);
+    int instance = (plugin->handle() == process_id) ? instance_id : 0;
+    plugin->Send(new PluginProcessMsg_PluginFocusNotify(instance));
+  }
+}