Browser Side Text Input State Tracking for OOPIF.

content/browser/renderer_host/render_widget_host_view_base.cc

Index: content/browser/renderer_host/render_widget_host_view_base.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_base.cc b/content/browser/renderer_host/render_widget_host_view_base.cc
index 9cdceb518eefad1e7dd47f841d32010a917e8044..1833017a111389d72283e77b01e2aea8cb2376fb 100644
--- a/content/browser/renderer_host/render_widget_host_view_base.cc
+++ b/content/browser/renderer_host/render_widget_host_view_base.cc
@@ -10,11 +10,18 @@
 #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"
@@ -379,6 +386,7 @@ RenderWidgetHostViewBase::RenderWidgetHostViewBase()
       current_display_rotation_(gfx::Display::ROTATE_0),
       pinch_zoom_enabled_(content::IsPinchToZoomEnabled()),
       renderer_frame_number_(0),
+      text_input_state_(new TextInputState()),
       weak_factory_(this) {}
 
 RenderWidgetHostViewBase::~RenderWidgetHostViewBase() {
@@ -403,6 +411,19 @@ void RenderWidgetHostViewBase::NotifyObserversAboutShutdown() {
   DCHECK(!observers_.might_have_observers());
 }
 
+void RenderWidgetHostViewBase::NotifyHostDelegateAboutShutdown() {
+  RenderWidgetHostImpl* host =
+      RenderWidgetHostImpl::From(GetRenderWidgetHost());
+
+  if (!host || !host->delegate())
+    return;
+
+  bool has_active_text = text_input_state()->type != ui::TEXT_INPUT_TYPE_NONE;
+  text_input_state_.reset(new TextInputState);

[Charlie Reis, 2016/03/16 16:55:13]

Same minor nit: new TextInputState()

[EhsanK, 2016/03/30 20:46:03]

Thanks! Done.

+
+  host->delegate()->UpdateTextInputState(this, has_active_text);
+}
+
 bool RenderWidgetHostViewBase::OnMessageReceived(const IPC::Message& msg){
   return false;
 }
@@ -720,6 +741,35 @@ void RenderWidgetHostViewBase::TransformPointToLocalCoordSpace(
   *transformed_point = point;
 }
 
+void RenderWidgetHostViewBase::TextInputStateChanged(
+    const TextInputState& params) {
+  bool 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;
+    RenderWidgetHostImpl* host =
+        RenderWidgetHostImpl::From(GetRenderWidgetHost());
+    if (host && host->delegate())
+      host->delegate()->UpdateTextInputState(this, text_input_state_changed);
+  }
+}
+
 void RenderWidgetHostViewBase::AddObserver(
     RenderWidgetHostViewBaseObserver* observer) {
   observers_.AddObserver(observer);