83a5b7cb8d
This is still fairly incomplete (i.e. no capturing, etc), but it allows a transition to "start", and then finish (on the next frame always, for now) or timeout, appropriately. I think it's in a reviewable shape, given that. There's one known divergence from the spec, which is described in https://github.com/w3c/csswg-drafts/issues/10822 Differential Revision: https://phabricator.services.mozilla.com/D220843
92 lines
2.3 KiB
C++
92 lines
2.3 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_ViewTransition_h
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#define mozilla_dom_ViewTransition_h
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#include "nsWrapperCache.h"
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class nsIGlobalObject;
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class nsITimer;
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namespace mozilla {
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class ErrorResult;
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namespace dom {
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class Document;
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class Promise;
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class ViewTransitionUpdateCallback;
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enum class SkipTransitionReason : uint8_t {
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JS,
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DocumentHidden,
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ClobberedActiveTransition,
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Timeout,
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UpdateCallbackRejected,
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};
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// https://drafts.csswg.org/css-view-transitions-1/#viewtransition-phase
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enum class ViewTransitionPhase : uint8_t {
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PendingCapture = 0,
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UpdateCallbackCalled,
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Animating,
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Done,
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};
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class ViewTransition final : public nsISupports, public nsWrapperCache {
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public:
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using Phase = ViewTransitionPhase;
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(ViewTransition)
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ViewTransition(Document&, ViewTransitionUpdateCallback*);
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Promise* GetUpdateCallbackDone(ErrorResult&);
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Promise* GetReady(ErrorResult&);
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Promise* GetFinished(ErrorResult&);
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void SkipTransition(SkipTransitionReason = SkipTransitionReason::JS);
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void PerformPendingOperations();
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nsIGlobalObject* GetParentObject() const;
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JSObject* WrapObject(JSContext*, JS::Handle<JSObject*> aGivenProto) override;
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private:
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enum class CallIfDone : bool { No, Yes };
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MOZ_CAN_RUN_SCRIPT void CallUpdateCallbackIgnoringErrors(CallIfDone);
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MOZ_CAN_RUN_SCRIPT void CallUpdateCallback(ErrorResult&);
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void Activate();
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void ClearActiveTransition();
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void Timeout();
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void Setup();
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void HandleFrame();
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void SkipTransition(SkipTransitionReason, JS::Handle<JS::Value>);
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void ClearTimeoutTimer();
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~ViewTransition();
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// Stored for the whole lifetime of the object (until CC).
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RefPtr<Document> mDocument;
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RefPtr<ViewTransitionUpdateCallback> mUpdateCallback;
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// Allocated lazily, but same object once allocated (again until CC).
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RefPtr<Promise> mUpdateCallbackDonePromise;
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RefPtr<Promise> mReadyPromise;
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RefPtr<Promise> mFinishedPromise;
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static void TimeoutCallback(nsITimer*, void*);
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RefPtr<nsITimer> mTimeoutTimer;
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Phase mPhase = Phase::PendingCapture;
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};
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} // namespace dom
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} // namespace mozilla
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#endif
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