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/*
* Copyright (C) 2015 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#if PLATFORM(IOS_FAMILY)
#import <wtf/Forward.h>
#import <wtf/RefCountedAndCanMakeWeakPtr.h>
#import <wtf/TZoneMalloc.h>
#import <wtf/WeakObjCPtr.h>
#import <wtf/WeakPtr.h>
OBJC_CLASS BKSApplicationStateMonitor;
OBJC_CLASS UIView;
OBJC_CLASS UIViewController;
OBJC_CLASS UIWindow;
OBJC_CLASS UIScene;
OBJC_CLASS WKUIWindowSceneObserver;
namespace WebKit {
enum class ApplicationType : uint8_t {
Application,
ViewService,
Extension,
};
class ApplicationStateTracker : public RefCountedAndCanMakeWeakPtr<ApplicationStateTracker> {
WTF_MAKE_TZONE_ALLOCATED(ApplicationStateTracker);
public:
static RefPtr<ApplicationStateTracker> create(UIView *view, SEL didEnterBackgroundSelector, SEL willEnterForegroundSelector, SEL willBeginSnapshotSequenceSelector, SEL didCompleteSnapshotSequenceSelector)
{
return adoptRef(new ApplicationStateTracker(view, didEnterBackgroundSelector, willEnterForegroundSelector, willBeginSnapshotSequenceSelector, didCompleteSnapshotSequenceSelector));
}
~ApplicationStateTracker();
bool isInBackground() const { return m_isInBackground; }
void setWindow(UIWindow *);
void setScene(UIScene *);
private:
ApplicationStateTracker(UIView *, SEL didEnterBackgroundSelector, SEL willEnterForegroundSelector, SEL willBeginSnapshotSequenceSelector, SEL didCompleteSnapshotSequenceSelector);
void setViewController(UIViewController *);
void applicationDidEnterBackground();
void applicationDidFinishSnapshottingAfterEnteringBackground();
void applicationWillEnterForeground();
void willBeginSnapshotSequence();
void didCompleteSnapshotSequence();
void removeAllObservers();
WeakObjCPtr<UIView> m_view;
WeakObjCPtr<UIWindow> m_window;
WeakObjCPtr<UIScene> m_scene;
WeakObjCPtr<UIViewController> m_viewController;
RetainPtr<WKUIWindowSceneObserver> m_observer;
ApplicationType m_applicationType { ApplicationType::Application };
SEL m_didEnterBackgroundSelector;
SEL m_willEnterForegroundSelector;
SEL m_willBeginSnapshotSequenceSelector;
SEL m_didCompleteSnapshotSequenceSelector;
bool m_isInBackground;
WeakObjCPtr<NSObject> m_didEnterBackgroundObserver;
WeakObjCPtr<NSObject> m_willEnterForegroundObserver;
WeakObjCPtr<NSObject> m_willBeginSnapshotSequenceObserver;
WeakObjCPtr<NSObject> m_didCompleteSnapshotSequenceObserver;
};
ApplicationType applicationType(UIWindow *);
}
#endif
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