content/browser/screen_orientation/screen_orientation_dispatcher_host_impl.h

   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 #ifndef CONTENT_BROWSER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_DISPATCHER_HOST_IMPL_H_
   6 #define CONTENT_BROWSER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_DISPATCHER_HOST_IMPL_H_
   7
   8 #include "content/public/browser/screen_orientation_dispatcher_host.h"
   9 #include "content/public/browser/web_contents_observer.h"
  10 #include "third_party/WebKit/public/platform/WebLockOrientationError.h"
  11 #include "third_party/WebKit/public/platform/WebScreenOrientationLockType.h"
  12
  13 namespace content {
  14
  15 class RenderFrameHost;
  16 class ScreenOrientationProvider;
  17 class WebContents;
  18
  19 // ScreenOrientationDispatcherHost receives lock and unlock requests from the
  20 // RenderFrames and dispatch them to the ScreenOrientationProvider. It also
  21 // make sure that the right RenderFrame get replied for each lock request.
  22 class CONTENT_EXPORT ScreenOrientationDispatcherHostImpl
  23     : public ScreenOrientationDispatcherHost,
  24       public WebContentsObserver {
  25  public:
  26   explicit ScreenOrientationDispatcherHostImpl(WebContents* web_contents);
  27   ~ScreenOrientationDispatcherHostImpl() override;
  28
  29   // ScreenOrientationDispatcherHost:
  30   void NotifyLockSuccess(int request_id) override;
  31   void NotifyLockError(int request_id,
  32                        blink::WebLockOrientationError error) override;
  33   void OnOrientationChange() override;
  34
  35   // WebContentsObserver:
  36   bool OnMessageReceived(const IPC::Message&,
  37                          RenderFrameHost* render_frame_host) override;
  38   void DidNavigateMainFrame(const LoadCommittedDetails& details,
  39                             const FrameNavigateParams& params) override;
  40
  41  private:
  42   void OnLockRequest(RenderFrameHost* render_frame_host,
  43                      blink::WebScreenOrientationLockType orientation,
  44                      int request_id);
  45   void OnUnlockRequest(RenderFrameHost* render_frame_host);
  46
  47   // Returns a RenderFrameHost if the request_id is still valid and the
  48   // associated RenderFrameHost still exists. Returns NULL otherwise.
  49   RenderFrameHost* GetRenderFrameHostForRequestID(int request_id);
  50
  51   void ResetCurrentLock();
  52   void NotifyLockError(int request_id,
  53                        RenderFrameHost* render_frame_host,
  54                        blink::WebLockOrientationError error);
  55
  56   scoped_ptr<ScreenOrientationProvider> provider_;
  57
  58   struct LockInformation {
  59     LockInformation(int request_id, int process_id, int routing_id);
  60     int request_id;
  61     int process_id;
  62     int routing_id;
  63   };
  64   // current_lock_ will be NULL if there are no current lock.
  65   LockInformation* current_lock_;
  66
  67   DISALLOW_COPY_AND_ASSIGN(ScreenOrientationDispatcherHostImpl);
  68 };
  69
  70 }  // namespace content
  71
  72 #endif // CONTENT_BROWSER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_DISPATCHER_HOST_IMPL_H_