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      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 ScreenOrientation_h
      6 #define ScreenOrientation_h
      7 
      8 #include "bindings/core/v8/ScriptWrappable.h"
      9 #include "core/events/EventTarget.h"
     10 #include "core/frame/DOMWindowProperty.h"
     11 #include "platform/heap/Handle.h"
     12 #include "public/platform/WebScreenOrientationType.h"
     13 #include "wtf/text/AtomicString.h"
     14 #include "wtf/text/WTFString.h"
     15 
     16 namespace blink {
     17 
     18 class ExecutionContext;
     19 class LocalFrame;
     20 class ScriptPromise;
     21 class ScriptState;
     22 class ScreenOrientationController;
     23 
     24 class ScreenOrientation FINAL
     25     : public RefCountedGarbageCollectedWillBeGarbageCollectedFinalized<ScreenOrientation>
     26     , public EventTargetWithInlineData
     27     , public DOMWindowProperty {
     28     DEFINE_EVENT_TARGET_REFCOUNTING_WILL_BE_REMOVED(RefCountedGarbageCollectedWillBeGarbageCollectedFinalized<ScreenOrientation>);
     29     DEFINE_WRAPPERTYPEINFO();
     30     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(ScreenOrientation);
     31 public:
     32     static ScreenOrientation* create(LocalFrame*);
     33 
     34     virtual ~ScreenOrientation();
     35 
     36     // EventTarget implementation.
     37     virtual const WTF::AtomicString& interfaceName() const OVERRIDE;
     38     virtual ExecutionContext* executionContext() const OVERRIDE;
     39 
     40     String type() const;
     41     unsigned short angle() const;
     42 
     43     void setType(WebScreenOrientationType);
     44     void setAngle(unsigned short);
     45 
     46     ScriptPromise lock(ScriptState*, const AtomicString& orientation);
     47     void unlock();
     48 
     49     DEFINE_ATTRIBUTE_EVENT_LISTENER(change);
     50 
     51     // Helper being used by this class and LockOrientationCallback.
     52     static const AtomicString& orientationTypeToString(WebScreenOrientationType);
     53 
     54     virtual void trace(Visitor*) OVERRIDE;
     55 
     56 private:
     57     explicit ScreenOrientation(LocalFrame*);
     58 
     59     ScreenOrientationController* controller();
     60 
     61     WebScreenOrientationType m_type;
     62     unsigned short m_angle;
     63 };
     64 
     65 } // namespace blink
     66 
     67 #endif // ScreenOrientation_h
     68