content/renderer/screen_orientation/screen_orientation_dispatcher.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/renderer/screen_orientation/screen_orientation_dispatcher.h"
   6
   7 #include "content/common/screen_orientation_messages.h"
   8 #include "content/public/renderer/render_thread.h"
   9 #include "third_party/WebKit/public/platform/WebScreenOrientationListener.h"
  10
  11 namespace content {
  12
  13 ScreenOrientationDispatcher::ScreenOrientationDispatcher(
  14     RenderThread* thread)
  15   : listener_(NULL) {
  16     thread->AddObserver(this);
  17 }
  18
  19 bool ScreenOrientationDispatcher::OnControlMessageReceived(
  20     const IPC::Message& message) {
  21   bool handled = true;
  22
  23   IPC_BEGIN_MESSAGE_MAP(ScreenOrientationDispatcher, message)
  24     IPC_MESSAGE_HANDLER(ScreenOrientationMsg_OrientationChange,
  25                         OnOrientationChange)
  26     IPC_MESSAGE_UNHANDLED(handled = false)
  27   IPC_END_MESSAGE_MAP()
  28
  29   return handled;
  30 }
  31
  32 void ScreenOrientationDispatcher::OnOrientationChange(
  33     blink::WebScreenOrientationType orientation) {
  34   if (!listener_)
  35     return;
  36
  37   listener_->didChangeScreenOrientation(orientation);
  38 }
  39
  40 void ScreenOrientationDispatcher::setListener(
  41     blink::WebScreenOrientationListener* listener) {
  42   listener_ = listener;
  43 }
  44
  45 }  // namespace content