webkit/ppapi: Notify the container when a plugin is accepting touch events.

webkit/plugins/ppapi/ppapi_plugin_instance.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 "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/memory/linked_ptr.h"
@@ skipping 1665 matching lines @@
     underline.endOffset = offsets[i + 1];
     if (input_event.composition_target_segment == static_cast<int32_t>(i - 2))
       underline.thick = true;
     underlines.push_back(underline);
   }
 
   delegate()->SimulateImeSetComposition(
       utf16_text, underlines, offsets[0], offsets[1]);
 }
 
+bool PluginInstance::IsAcceptingTouchEvents() const {
+  return (filtered_input_event_mask_ & PP_INPUTEVENT_CLASS_TOUCH) ||
+      (input_event_mask_ & PP_INPUTEVENT_CLASS_TOUCH);
+}
+
 void PluginInstance::ClosePendingUserGesture(PP_Instance instance,
                                              PP_TimeTicks timestamp) {
   // Close the pending user gesture if the plugin had a chance to respond.
   // Don't close the pending user gesture if the timestamps are equal since
   // there may be multiple input events with the same timestamp.
   if (timestamp > pending_user_gesture_)
     pending_user_gesture_ = 0.0;
 }
 
 PP_Bool PluginInstance::BindGraphics(PP_Instance instance,
@@ skipping 173 matching lines @@
 }
 
 ::ppapi::thunk::PPB_Flash_API* PluginInstance::GetFlashAPI() {
   return &flash_impl_;
 }
 
 int32_t PluginInstance::RequestInputEvents(PP_Instance instance,
                                            uint32_t event_classes) {
   input_event_mask_ |= event_classes;
   filtered_input_event_mask_ &= ~(event_classes);
+  if (event_classes & PP_INPUTEVENT_CLASS_TOUCH)
+    container_->setAcceptingTouchEvents(IsAcceptingTouchEvents());
   return ValidateRequestInputEvents(false, event_classes);
 }
 
 int32_t PluginInstance::RequestFilteringInputEvents(PP_Instance instance,
                                                     uint32_t event_classes) {
   filtered_input_event_mask_ |= event_classes;
   input_event_mask_ &= ~(event_classes);
+  if (event_classes & PP_INPUTEVENT_CLASS_TOUCH)
+    container_->setAcceptingTouchEvents(IsAcceptingTouchEvents());
   return ValidateRequestInputEvents(true, event_classes);
 }
 
 void PluginInstance::ClearInputEventRequest(PP_Instance instance,
                                             uint32_t event_classes) {
   input_event_mask_ &= ~(event_classes);
   filtered_input_event_mask_ &= ~(event_classes);
+  if (event_classes & PP_INPUTEVENT_CLASS_TOUCH)
+    container_->setAcceptingTouchEvents(IsAcceptingTouchEvents());
 }
 
 void PluginInstance::ZoomChanged(PP_Instance instance, double factor) {
   // We only want to tell the page to change its zoom if the whole page is the
   // plugin.  If we're in an iframe, then don't do anything.
   if (!IsFullPagePlugin())
     return;
   container()->zoomLevelChanged(WebView::zoomFactorToZoomLevel(factor));
 }
 
@@ skipping 298 matching lines @@
   screen_size_for_fullscreen_ = gfx::Size();
   WebElement element = container_->element();
   element.setAttribute(WebString::fromUTF8(kWidth), width_before_fullscreen_);
   element.setAttribute(WebString::fromUTF8(kHeight), height_before_fullscreen_);
   element.setAttribute(WebString::fromUTF8(kBorder), border_before_fullscreen_);
   element.setAttribute(WebString::fromUTF8(kStyle), style_before_fullscreen_);
 }
 
 }  // namespace ppapi
 }  // namespace webkit