Supports fake key events for setComposition/commitText by on-screen keyboards.

ash/shell.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 "ash/shell.h"
 
 #include <algorithm>
 #include <string>
 
 #include "ash/accelerators/accelerator_controller.h"
@@ skipping 1137 matching lines @@
 void Shell::OnEvent(ui::Event* event) {
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // Shell, aura::client::ActivationChangeObserver implementation:
 
 void Shell::OnWindowActivated(aura::Window* gained_active,
                               aura::Window* lost_active) {
   if (gained_active)
     target_root_window_ = gained_active->GetRootWindow();
+  input_method_filter_->UpdateTargetDispatcher(
+      target_root_window_ ? target_root_window_->GetHost()->event_processor()
+                          : NULL);

[sadrul, 2014/05/31 18:10:16]

The problem with this is that all non-ash users of InputMethodEventFilters will
have to do the same thing (e.g. desktop, athena, etc).

A better solution would be for the IMEFilter to install itself as the
ActivationChangeObserver to the ActivationClient of the root-window, and update
the |target_dispatcher_| itself when appropriate.

[Shu Chen, 2014/06/01 05:33:23]

Done.

 }
 
 }  // namespace ash