| /* |
| * Copyright (C) 2018 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. |
| */ |
| |
| #import "config.h" |
| #import "WKApplicationStateTrackingView.h" |
| |
| #if PLATFORM(IOS_FAMILY) |
| |
| #import "ApplicationStateTracker.h" |
| #import "Logging.h" |
| #import "WKWebViewInternal.h" |
| #import "WebPageProxy.h" |
| #import <wtf/RetainPtr.h> |
| #import <wtf/WeakObjCPtr.h> |
| |
| @implementation WKApplicationStateTrackingView { |
| WeakObjCPtr<WKWebView> _webViewToTrack; |
| std::unique_ptr<WebKit::ApplicationStateTracker> _applicationStateTracker; |
| } |
| |
| - (instancetype)initWithFrame:(CGRect)frame webView:(WKWebView *)webView |
| { |
| if (!(self = [super initWithFrame:frame])) |
| return nil; |
| |
| _webViewToTrack = webView; |
| return self; |
| } |
| |
| - (void)willMoveToWindow:(UIWindow *)newWindow |
| { |
| if (!self._contentView.window || newWindow) |
| return; |
| |
| auto page = [_webViewToTrack _page]; |
| RELEASE_LOG(ViewState, "%p - WKApplicationStateTrackingView: View with page [%p, pageProxyID: %" PRIu64 "] was removed from a window, _lastObservedStateWasBackground: %d", self, page.get(), page ? page->identifier().toUInt64() : 0, page ? page->lastObservedStateWasBackground() : false); |
| ASSERT(_applicationStateTracker); |
| _applicationStateTracker = nullptr; |
| } |
| |
| - (void)didMoveToWindow |
| { |
| if (!self._contentView.window || _applicationStateTracker) |
| return; |
| |
| auto page = [_webViewToTrack _page]; |
| bool lastObservedStateWasBackground = page ? page->lastObservedStateWasBackground() : false; |
| |
| _applicationStateTracker = makeUnique<WebKit::ApplicationStateTracker>(self, @selector(_applicationDidEnterBackground), @selector(_applicationDidFinishSnapshottingAfterEnteringBackground), @selector(_applicationWillEnterForeground), @selector(_willBeginSnapshotSequence), @selector(_didCompleteSnapshotSequence)); |
| RELEASE_LOG(ViewState, "%p - WKApplicationStateTrackingView: View with page [%p, pageProxyID: %" PRIu64 "] was added to a window, _lastObservedStateWasBackground: %d, isNowBackground: %d", self, page.get(), page ? page->identifier().toUInt64() : 0, lastObservedStateWasBackground, [self isBackground]); |
| |
| if (lastObservedStateWasBackground && ![self isBackground]) |
| [self _applicationWillEnterForeground]; |
| else if (!lastObservedStateWasBackground && [self isBackground]) |
| [self _applicationDidEnterBackground]; |
| } |
| |
| - (void)_applicationDidEnterBackground |
| { |
| auto page = [_webViewToTrack _page]; |
| if (!page) |
| return; |
| |
| page->applicationDidEnterBackground(); |
| page->activityStateDidChange(WebCore::ActivityState::allFlags() - WebCore::ActivityState::IsInWindow); |
| } |
| |
| - (void)_applicationDidFinishSnapshottingAfterEnteringBackground |
| { |
| if (auto page = [_webViewToTrack _page]) |
| page->applicationDidFinishSnapshottingAfterEnteringBackground(); |
| } |
| |
| - (void)_applicationWillEnterForeground |
| { |
| auto page = [_webViewToTrack _page]; |
| if (!page) |
| return; |
| |
| page->applicationWillEnterForeground(); |
| page->activityStateDidChange(WebCore::ActivityState::allFlags() - WebCore::ActivityState::IsInWindow, WebKit::WebPageProxy::ActivityStateChangeDispatchMode::Immediate, WebKit::WebPageProxy::ActivityStateChangeReplyMode::Synchronous); |
| } |
| |
| - (void)_willBeginSnapshotSequence |
| { |
| auto page = [_webViewToTrack _page]; |
| if (!page) |
| return; |
| |
| page->setShouldFireResizeEvents(false); |
| } |
| |
| - (void)_didCompleteSnapshotSequence |
| { |
| auto page = [_webViewToTrack _page]; |
| if (!page) |
| return; |
| |
| page->setShouldFireResizeEvents(true); |
| } |
| |
| - (BOOL)isBackground |
| { |
| return _applicationStateTracker ? _applicationStateTracker->isInBackground() : YES; |
| } |
| |
| - (UIView *)_contentView |
| { |
| return self; |
| } |
| |
| @end |
| |
| #endif // PLATFORM(IOS_FAMILY) |