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

rely on to trigger NPAPI keyboard focus notifications.
BUG=26585
TEST=On pages with multiple Flash text entry fields, only one should have
a blinking caret at any time.  Flash elements that use the ActionScript2
"Key.IsDown()" function should only detect keydowns when they are in a
visible tab and focused.
Review URL: http://codereview.chromium.org/399090

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@32631 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 15 insertions, 0 deletions

diff --git a/chrome/browser/plugin_process_host_mac.cc b/chrome/browser/plugin_process_host_mac.cc
index bea1cbc..f1f0ff8 100644
--- a/chrome/browser/plugin_process_host_mac.cc
+++ b/chrome/browser/plugin_process_host_mac.cc
@@ -12,6 +12,8 @@
 #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,
@@ -75,3 +77,16 @@ void PluginProcessHost::OnAppActivation() {
         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));
+  }
+}