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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef PresentationAvailability_h | 5 #ifndef PresentationAvailability_h |
| 6 #define PresentationAvailability_h | 6 #define PresentationAvailability_h |
| 7 | 7 |
| 8 #include "bindings/core/v8/ActiveScriptWrappable.h" | 8 #include "bindings/core/v8/ActiveScriptWrappable.h" |
| 9 #include "core/dom/ActiveDOMObject.h" | 9 #include "core/dom/SuspendableObject.h" |
| 10 #include "core/events/EventTarget.h" | 10 #include "core/events/EventTarget.h" |
| 11 #include "core/page/PageVisibilityObserver.h" | 11 #include "core/page/PageVisibilityObserver.h" |
| 12 #include "modules/ModulesExport.h" | 12 #include "modules/ModulesExport.h" |
| 13 #include "platform/weborigin/KURL.h" | 13 #include "platform/weborigin/KURL.h" |
| 14 #include "public/platform/WebURL.h" | 14 #include "public/platform/WebURL.h" |
| 15 #include "public/platform/modules/presentation/WebPresentationAvailabilityObserv
er.h" | 15 #include "public/platform/modules/presentation/WebPresentationAvailabilityObserv
er.h" |
| 16 | 16 |
| 17 namespace blink { | 17 namespace blink { |
| 18 | 18 |
| 19 class ExecutionContext; | 19 class ExecutionContext; |
| 20 class ScriptPromiseResolver; | 20 class ScriptPromiseResolver; |
| 21 | 21 |
| 22 // Expose whether there is a presentation display available for |url|. The | 22 // Expose whether there is a presentation display available for |url|. The |
| 23 // object will be initialized with a default value passed via ::take() and will | 23 // object will be initialized with a default value passed via ::take() and will |
| 24 // then subscribe to receive callbacks if the status for |url| were to | 24 // then subscribe to receive callbacks if the status for |url| were to |
| 25 // change. The object will only listen to changes when required. | 25 // change. The object will only listen to changes when required. |
| 26 class MODULES_EXPORT PresentationAvailability final | 26 class MODULES_EXPORT PresentationAvailability final |
| 27 : public EventTargetWithInlineData, | 27 : public EventTargetWithInlineData, |
| 28 public ActiveScriptWrappable, | 28 public ActiveScriptWrappable, |
| 29 public ActiveDOMObject, | 29 public SuspendableObject, |
| 30 public PageVisibilityObserver, | 30 public PageVisibilityObserver, |
| 31 public WebPresentationAvailabilityObserver { | 31 public WebPresentationAvailabilityObserver { |
| 32 USING_GARBAGE_COLLECTED_MIXIN(PresentationAvailability); | 32 USING_GARBAGE_COLLECTED_MIXIN(PresentationAvailability); |
| 33 DEFINE_WRAPPERTYPEINFO(); | 33 DEFINE_WRAPPERTYPEINFO(); |
| 34 | 34 |
| 35 public: | 35 public: |
| 36 static PresentationAvailability* take(ScriptPromiseResolver*, | 36 static PresentationAvailability* take(ScriptPromiseResolver*, |
| 37 const KURL&, | 37 const KURL&, |
| 38 bool); | 38 bool); |
| 39 ~PresentationAvailability() override; | 39 ~PresentationAvailability() override; |
| 40 | 40 |
| 41 // EventTarget implementation. | 41 // EventTarget implementation. |
| 42 const AtomicString& interfaceName() const override; | 42 const AtomicString& interfaceName() const override; |
| 43 ExecutionContext* getExecutionContext() const override; | 43 ExecutionContext* getExecutionContext() const override; |
| 44 | 44 |
| 45 // WebPresentationAvailabilityObserver implementation. | 45 // WebPresentationAvailabilityObserver implementation. |
| 46 void availabilityChanged(bool) override; | 46 void availabilityChanged(bool) override; |
| 47 const WebURL url() const override; | 47 const WebURL url() const override; |
| 48 | 48 |
| 49 // ScriptWrappable implementation. | 49 // ScriptWrappable implementation. |
| 50 bool hasPendingActivity() const final; | 50 bool hasPendingActivity() const final; |
| 51 | 51 |
| 52 // ActiveDOMObject implementation. | 52 // SuspendableObject implementation. |
| 53 void suspend() override; | 53 void suspend() override; |
| 54 void resume() override; | 54 void resume() override; |
| 55 void contextDestroyed() override; | 55 void contextDestroyed() override; |
| 56 | 56 |
| 57 // PageVisibilityObserver implementation. | 57 // PageVisibilityObserver implementation. |
| 58 void pageVisibilityChanged() override; | 58 void pageVisibilityChanged() override; |
| 59 | 59 |
| 60 bool value() const; | 60 bool value() const; |
| 61 | 61 |
| 62 DEFINE_ATTRIBUTE_EVENT_LISTENER(change); | 62 DEFINE_ATTRIBUTE_EVENT_LISTENER(change); |
| 63 | 63 |
| 64 DECLARE_VIRTUAL_TRACE(); | 64 DECLARE_VIRTUAL_TRACE(); |
| 65 | 65 |
| 66 protected: | 66 protected: |
| 67 // EventTarget implementation. | 67 // EventTarget implementation. |
| 68 void addedEventListener(const AtomicString& eventType, | 68 void addedEventListener(const AtomicString& eventType, |
| 69 RegisteredEventListener&) override; | 69 RegisteredEventListener&) override; |
| 70 | 70 |
| 71 private: | 71 private: |
| 72 // Current state of the ActiveDOMObject. It is Active when created. It | 72 // Current state of the SuspendableObject. It is Active when created. It |
| 73 // becomes Suspended when suspend() is called and moves back to Active if | 73 // becomes Suspended when suspend() is called and moves back to Active if |
| 74 // resume() is called. It becomes Inactive when stop() is called or at | 74 // resume() is called. It becomes Inactive when stop() is called or at |
| 75 // destruction time. | 75 // destruction time. |
| 76 enum class State : char { | 76 enum class State : char { |
| 77 Active, | 77 Active, |
| 78 Suspended, | 78 Suspended, |
| 79 Inactive, | 79 Inactive, |
| 80 }; | 80 }; |
| 81 | 81 |
| 82 PresentationAvailability(ExecutionContext*, const KURL&, bool); | 82 PresentationAvailability(ExecutionContext*, const KURL&, bool); |
| 83 | 83 |
| 84 void setState(State); | 84 void setState(State); |
| 85 void updateListening(); | 85 void updateListening(); |
| 86 | 86 |
| 87 const KURL m_url; | 87 const KURL m_url; |
| 88 bool m_value; | 88 bool m_value; |
| 89 State m_state; | 89 State m_state; |
| 90 }; | 90 }; |
| 91 | 91 |
| 92 } // namespace blink | 92 } // namespace blink |
| 93 | 93 |
| 94 #endif // PresentationAvailability_h | 94 #endif // PresentationAvailability_h |
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