content/browser/screen_orientation/screen_orientation_dispatcher_host.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/browser/screen_orientation/screen_orientation_dispatcher_host.h"
   6
   7 #include "content/browser/screen_orientation/screen_orientation_provider.h"
   8 #include "content/common/screen_orientation_messages.h"
   9
  10 namespace content {
  11
  12 ScreenOrientationDispatcherHost::ScreenOrientationDispatcherHost()
  13   : BrowserMessageFilter(ScreenOrientationMsgStart) {
  14   if (!provider_.get())
  15     provider_.reset(CreateProvider());
  16 }
  17
  18 ScreenOrientationDispatcherHost::~ScreenOrientationDispatcherHost() {
  19 }
  20
  21 bool ScreenOrientationDispatcherHost::OnMessageReceived(
  22     const IPC::Message& message, bool* message_was_ok) {
  23   bool handled = true;
  24
  25   IPC_BEGIN_MESSAGE_MAP_EX(ScreenOrientationDispatcherHost,
  26                            message,
  27                            *message_was_ok)
  28     IPC_MESSAGE_HANDLER(ScreenOrientationHostMsg_Lock, OnLockRequest)
  29     IPC_MESSAGE_HANDLER(ScreenOrientationHostMsg_Unlock, OnUnlockRequest)
  30     IPC_MESSAGE_UNHANDLED(handled = false)
  31   IPC_END_MESSAGE_MAP_EX()
  32
  33   return handled;
  34 }
  35
  36 void ScreenOrientationDispatcherHost::OnOrientationChange(
  37     blink::WebScreenOrientationType orientation) {
  38   Send(new ScreenOrientationMsg_OrientationChange(orientation));
  39 }
  40
  41 void ScreenOrientationDispatcherHost::SetProviderForTests(
  42     ScreenOrientationProvider* provider) {
  43   provider_.reset(provider);
  44 }
  45
  46 void ScreenOrientationDispatcherHost::OnLockRequest(
  47     blink::WebScreenOrientationLockType orientation) {
  48   if (!provider_.get())
  49     return;
  50
  51   provider_->LockOrientation(orientation);
  52 }
  53
  54 void ScreenOrientationDispatcherHost::OnUnlockRequest() {
  55   if (!provider_.get())
  56     return;
  57
  58   provider_->UnlockOrientation();
  59 }
  60
  61 #if !defined(OS_ANDROID)
  62 // static
  63 ScreenOrientationProvider* ScreenOrientationDispatcherHost::CreateProvider() {
  64   return NULL;
  65 }
  66 #endif
  67
  68 }  // namespace content