content/browser/screen_orientation/screen_orientation_delegate_android.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_DELEGATE_ANDROID_H_
   6 #define CONTENT_BROWSER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_DELEGATE_ANDROID_H_
   7
   8 #include <jni.h>
   9
  10 #include "base/macros.h"
  11 #include "content/public/browser/screen_orientation_delegate.h"
  12 #include "third_party/WebKit/public/platform/WebScreenOrientationLockType.h"
  13
  14 namespace content {
  15
  16 class WebContents;
  17
  18 // Android implementation of ScreenOrientationDelegate. The functionality of
  19 // ScreenOrientationProvider is always supported.
  20 class ScreenOrientationDelegateAndroid : public ScreenOrientationDelegate {
  21  public:
  22   ScreenOrientationDelegateAndroid();
  23   ~ScreenOrientationDelegateAndroid() override;
  24
  25   static bool Register(JNIEnv* env);
  26
  27   // Ask the ScreenOrientationListener (Java) to start accurately listening to
  28   // the screen orientation. It keep track of the number of start request if it
  29   // is already running an accurate listening.
  30   static void StartAccurateListening();
  31
  32   // Ask the ScreenOrientationListener (Java) to stop accurately listening to
  33   // the screen orientation. It will actually stop only if the number of stop
  34   // requests matches the number of start requests.
  35   static void StopAccurateListening();
  36
  37   // ScreenOrientationDelegate:
  38   bool FullScreenRequired(WebContents* web_contents) override;
  39   void Lock(WebContents* web_contents,
  40             blink::WebScreenOrientationLockType lock_orientation) override;
  41   bool ScreenOrientationProviderSupported() override;
  42   void Unlock(WebContents* web_contents) override;
  43
  44  private:
  45   DISALLOW_COPY_AND_ASSIGN(ScreenOrientationDelegateAndroid);
  46 };
  47
  48 } // namespace content
  49
  50 #endif  // CONTENT_BROWSER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_DELEGATE_ANDROID_H_