src/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   virtual ~ScreenOrientationDispatcherHostImpl();
  28
  29   // ScreenOrientationDispatcherHost:
  30   virtual void NotifyLockSuccess(int request_id) OVERRIDE;
  31   virtual void NotifyLockError(int request_id,
  32                                blink::WebLockOrientationError error) OVERRIDE;
  33   virtual void OnOrientationChange() OVERRIDE;
  34   virtual void SetProvider(ScreenOrientationProvider* provider) OVERRIDE;
  35
  36   // WebContentsObserver:
  37   virtual bool OnMessageReceived(const IPC::Message&,
  38                                  RenderFrameHost* render_frame_host) OVERRIDE;
  39   virtual void DidNavigateMainFrame(const LoadCommittedDetails& details,
  40                                     const FrameNavigateParams& params) OVERRIDE;
  41
  42  private:
  43   void OnLockRequest(RenderFrameHost* render_frame_host,
  44                      blink::WebScreenOrientationLockType orientation,
  45                      int request_id);
  46   void OnUnlockRequest(RenderFrameHost* render_frame_host);
  47
  48   // Returns a RenderFrameHost if the request_id is still valid and the
  49   // associated RenderFrameHost still exists. Returns NULL otherwise.
  50   RenderFrameHost* GetRenderFrameHostForRequestID(int request_id);
  51
  52   void ResetCurrentLock();
  53   void NotifyLockError(int request_id,
  54                        RenderFrameHost* render_frame_host,
  55                        blink::WebLockOrientationError error);
  56
  57   scoped_ptr<ScreenOrientationProvider> provider_;
  58
  59   struct LockInformation {
  60     LockInformation(int request_id, int process_id, int routing_id);
  61     int request_id;
  62     int process_id;
  63     int routing_id;
  64   };
  65   // current_lock_ will be NULL if there are no current lock.
  66   LockInformation* current_lock_;
  67
  68   DISALLOW_COPY_AND_ASSIGN(ScreenOrientationDispatcherHostImpl);
  69 };
  70
  71 }  // namespace content
  72
  73 #endif // CONTENT_BROWSER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_DISPATCHER_HOST_IMPL_H_