Browser Side Text Input State Tracking for OOPIF.

content/browser/renderer_host/render_widget_host_view_base.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_base.h"
 
 #include "base/logging.h"
 #include "build/build_config.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
 #include "content/browser/renderer_host/input/synthetic_gesture_target_base.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
+#include "content/browser/renderer_host/render_view_host_delegate.h"
+#include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_delegate.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_base_observer.h"
 #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/render_widget_host_view_frame_subscriber.h"
+#include "content/public/common/browser_plugin_guest_mode.h"
 #include "ui/gfx/display.h"
 #include "ui/gfx/geometry/point_conversions.h"
 #include "ui/gfx/geometry/size_conversions.h"
 #include "ui/gfx/geometry/size_f.h"
 #include "ui/gfx/screen.h"
 
 #if defined(OS_WIN)
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "base/win/wrapped_window_proc.h"
@@ skipping 344 matching lines @@
     : popup_type_(blink::WebPopupTypeNone),
       background_color_(SK_ColorWHITE),
       mouse_locked_(false),
       showing_context_menu_(false),
       selection_text_offset_(0),
       selection_range_(gfx::Range::InvalidRange()),
       current_device_scale_factor_(0),
       current_display_rotation_(gfx::Display::ROTATE_0),
       pinch_zoom_enabled_(content::IsPinchToZoomEnabled()),
       renderer_frame_number_(0),
-      weak_factory_(this) {}
+      text_input_state_(new TextInputState),
+      text_input_state_changed_(false),
+      weak_factory_(this) {
+  cached_text_input_state_ = text_input_state_.get();
+}
 
 RenderWidgetHostViewBase::~RenderWidgetHostViewBase() {
   DCHECK(!mouse_locked_);
   // We call this here to guarantee that observers are notified before we go
   // away. However, some subclasses may wish to call this earlier in their
   // shutdown process, e.g. to force removal from
   // RenderWidgetHostInputEventRouter's surface map before relinquishing a
   // host pointer, as in RenderWidgetHostViewGuest. There is no harm in calling
   // NotifyObserversAboutShutdown() twice, as the observers are required to
   // de-register on the first call, and so the second call does nothing.
@@ skipping 166 matching lines @@
       current_display_rotation_ == display.rotation()) {
     return false;
   }
 
   current_display_area_ = display.work_area();
   current_device_scale_factor_ = display.device_scale_factor();
   current_display_rotation_ = display.rotation();
   return true;
 }
 
+bool RenderWidgetHostViewBase::ShouldProcessTextInputState() {
+  if (text_input_state_changed_) {
+    text_input_state_changed_ = false;
+    return true;
+  }
+  return false;
+}
+
 base::WeakPtr<RenderWidgetHostViewBase> RenderWidgetHostViewBase::GetWeakPtr() {
   return weak_factory_.GetWeakPtr();
 }
 
 scoped_ptr<SyntheticGestureTarget>
 RenderWidgetHostViewBase::CreateSyntheticGestureTarget() {
   RenderWidgetHostImpl* host =
       RenderWidgetHostImpl::From(GetRenderWidgetHost());
   return scoped_ptr<SyntheticGestureTarget>(
       new SyntheticGestureTargetBase(host));
@@ skipping 134 matching lines @@
       gfx::ToRoundedPoint(point)));
 }
 
 void RenderWidgetHostViewBase::TransformPointToLocalCoordSpace(
     const gfx::Point& point,
     cc::SurfaceId original_surface,
     gfx::Point* transformed_point) {
   *transformed_point = point;
 }
 
+void RenderWidgetHostViewBase::TextInputStateChanged(
+    const TextInputState& params) {
+  text_input_state_changed_ = true;
+#if !defined(OS_ANDROID)
+  if (params.type == text_input_state_->type &&
+      params.can_compose_inline == text_input_state_->can_compose_inline
+#if !defined(OS_MACOSX)
+      && params.mode == text_input_state_->mode &&
+      params.flags == text_input_state_->flags
+#endif
+      )
+    text_input_state_changed_ = false;
+#else
+  if (params.is_non_ime_change) {
+    // Sends an acknowledgement to the renderer of a processed IME event.
+    GetRenderWidgetHost()->Send(
+        new InputMsg_ImeEventAck(GetRenderWidgetHost()->GetRoutingID()));
+  }
+#endif
+
+  if (text_input_state_changed_)
+    *text_input_state_ = params;
+
+  UpdateTextInputState();
+}
+
+RenderWidgetHostViewBase* RenderWidgetHostViewBase::GetFocusedView() {
+  if (!SiteIsolationPolicy::AreCrossProcessFramesPossible())
+    return this;
+  RenderWidgetHostViewBase* focused_view =
+      RenderWidgetHostImpl::From(GetRenderWidgetHost())
+          ->delegate()
+          ->GetFocusedView();
+  return !!focused_view ? focused_view : this;
+}
+
+void RenderWidgetHostViewBase::UpdateTextInputState() {}
+
 void RenderWidgetHostViewBase::AddObserver(
     RenderWidgetHostViewBaseObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void RenderWidgetHostViewBase::RemoveObserver(
     RenderWidgetHostViewBaseObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 cc::SurfaceId RenderWidgetHostViewBase::SurfaceIdForTesting() const {
   return cc::SurfaceId();
 }
 
 }  // namespace content