Request to start/stop calculating composition info from RenderWidget when it is active/inactive.

content/browser/renderer_host/render_widget_host_view_aura.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 "content/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include <set>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 36 matching lines @@
 #include "content/common/content_switches_internal.h"
 #include "content/common/input_messages.h"
 #include "content/common/site_isolation_policy.h"
 #include "content/common/text_input_state.h"
 #include "content/common/view_messages.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/overscroll_configuration.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_widget_host_view_frame_subscriber.h"
 #include "content/public/browser/user_metrics.h"
+#include "content/public/common/child_process_host.h"
 #include "content/public/common/content_switches.h"
 #include "gpu/ipc/common/gpu_messages.h"
 #include "third_party/WebKit/public/platform/WebScreenInfo.h"
 #include "third_party/WebKit/public/web/WebCompositionUnderline.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/cursor_client.h"
 #include "ui/aura/client/cursor_client_observer.h"
 #include "ui/aura/client/focus_client.h"
 #include "ui/aura/client/screen_position_client.h"
@@ skipping 394 matching lines @@
 #if defined(OS_WIN)
       legacy_render_widget_host_HWND_(nullptr),
       legacy_window_destroyed_(false),
       virtual_keyboard_requested_(false),
 #endif
       has_snapped_to_boundary_(false),
       is_guest_view_hack_(is_guest_view_hack),
       set_focus_on_mouse_down_or_key_event_(false),
       device_scale_factor_(0.0f),
       disable_input_event_router_for_testing_(false),
+      last_active_widget_process_id_(ChildProcessHost::kInvalidUniqueID),
+      last_active_widget_routing_id_(MSG_ROUTING_NONE),
       weak_ptr_factory_(this) {
   if (!is_guest_view_hack_)
     host_->SetView(this);
 
   // Let the page-level input event router know about our surface ID
   // namespace for surface-based hit testing.
   if (host_->delegate() && host_->delegate()->GetInputEventRouter()) {
     host_->delegate()->GetInputEventRouter()->AddSurfaceClientIdOwner(
         GetSurfaceClientId(), this);
   }
@@ skipping 2506 matching lines @@
     bool did_update_state) {
   DCHECK_EQ(text_input_manager_, text_input_manager);
 
   if (!GetInputMethod())
     return;
 
   if (did_update_state)
     GetInputMethod()->OnTextInputTypeChanged(this);
 
   const TextInputState* state = text_input_manager_->GetTextInputState();
-
   if (state && state->show_ime_if_needed &&
       state->type != ui::TEXT_INPUT_TYPE_NONE) {
     GetInputMethod()->ShowImeIfNeeded();
-
     // Start monitoring the composition information if the focused node is
     // editable.
-    host_->Send(new InputMsg_RequestCompositionUpdate(
-        host_->GetRoutingID(),
-        false /* immediate request */,
+    RenderWidgetHostImpl* last_active_widget =
+        text_input_manager_->GetActiveWidget();
+    last_active_widget_routing_id_ = last_active_widget->GetRoutingID();
+    last_active_widget_process_id_ = last_active_widget->GetProcess()->GetID();
+    last_active_widget->Send(new InputMsg_RequestCompositionUpdate(
+        last_active_widget->GetRoutingID(), false /* immediate request */,
         true /* monitor request */));
   } else {
     // Stop monitoring the composition information if the focused node is not
     // editable.
-    host_->Send(new InputMsg_RequestCompositionUpdate(
-        host_->GetRoutingID(),
-        false /* immediate request */,
-        false /* monitor request */));
+    RenderWidgetHostImpl* last_active_widget = RenderWidgetHostImpl::FromID(
+        last_active_widget_process_id_, last_active_widget_routing_id_);
+    if (last_active_widget) {
+      last_active_widget->Send(new InputMsg_RequestCompositionUpdate(
+          last_active_widget->GetRoutingID(), false /* immediate request */,
+          false /* monitor request */));
+    }
+    last_active_widget_routing_id_ = MSG_ROUTING_NONE;
+    last_active_widget_process_id_ = ChildProcessHost::kInvalidUniqueID;
   }
 }
 
 void RenderWidgetHostViewAura::OnImeCancelComposition(
     TextInputManager* text_input_manager,
     RenderWidgetHostViewBase* view) {
   // |view| is not necessarily the one corresponding to
   // TextInputManager::GetActiveWidget() as RenderWidgetHostViewAura can call
   // this method to finish any ongoing composition in response to a mouse down
   // event.
@@ skipping 56 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostViewBase, public:
 
 // static
 void RenderWidgetHostViewBase::GetDefaultScreenInfo(WebScreenInfo* results) {
   GetScreenInfoForWindow(results, NULL);
 }
 
 }  // namespace content