зеркало из https://github.com/mozilla/gecko-dev.git
122 строки
3.4 KiB
C++
122 строки
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* 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_timeout_h
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#define mozilla_dom_timeout_h
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#include "mozilla/dom/PopupBlocker.h"
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#include "mozilla/LinkedList.h"
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#include "mozilla/TimeStamp.h"
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#include "nsCOMPtr.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsITimeoutHandler.h"
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class nsIEventTarget;
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class nsIPrincipal;
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class nsIEventTarget;
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class nsGlobalWindowInner;
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namespace mozilla {
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namespace dom {
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/*
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* Timeout struct that holds information about each script
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* timeout. Holds a strong reference to an nsITimeoutHandler, which
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* abstracts the language specific cruft.
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*/
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class Timeout final : public LinkedListElement<RefPtr<Timeout>> {
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public:
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Timeout();
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NS_DECL_CYCLE_COLLECTION_NATIVE_CLASS(Timeout)
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NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(Timeout)
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enum class Reason : uint8_t {
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eTimeoutOrInterval,
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eIdleCallbackTimeout,
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};
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void SetWhenOrTimeRemaining(const TimeStamp& aBaseTime,
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const TimeDuration& aDelay);
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// Can only be called when not frozen.
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const TimeStamp& When() const;
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const TimeStamp& SubmitTime() const;
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// Can only be called when frozen.
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const TimeDuration& TimeRemaining() const;
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private:
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// mWhen and mTimeRemaining can't be in a union, sadly, because they
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// have constructors.
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// Nominal time to run this timeout. Use only when timeouts are not
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// frozen.
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TimeStamp mWhen;
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// Remaining time to wait. Used only when timeouts are frozen.
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TimeDuration mTimeRemaining;
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// Time that the timeout started, restarted, or was frozen. Useful for
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// logging time from (virtual) start of a timer until the time it fires
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// (or is cancelled, etc)
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TimeStamp mSubmitTime;
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~Timeout() = default;
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public:
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// Public member variables in this section. Please don't add to this list
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// or mix methods with these. The interleaving public/private sections
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// is necessary as we migrate members to private while still trying to
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// keep decent binary packing.
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// Window for which this timeout fires
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RefPtr<nsGlobalWindowInner> mWindow;
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// The language-specific information about the callback.
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nsCOMPtr<nsITimeoutHandler> mScriptHandler;
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// Interval
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TimeDuration mInterval;
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// Returned as value of setTimeout()
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uint32_t mTimeoutId;
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// Identifies which firing level this Timeout is being processed in
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// when sync loops trigger nested firing.
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uint32_t mFiringId;
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#ifdef DEBUG
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int64_t mFiringIndex;
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#endif
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// The popup state at timeout creation time if not created from
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// another timeout
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PopupBlocker::PopupControlState mPopupState;
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// Used to allow several reasons for setting a timeout, where each
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// 'Reason' value is using a possibly overlapping set of id:s.
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Reason mReason;
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// Between 0 and DOM_CLAMP_TIMEOUT_NESTING_LEVEL. Currently we don't
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// care about nesting levels beyond that value.
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uint8_t mNestingLevel;
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// True if the timeout was cleared
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bool mCleared;
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// True if this is one of the timeouts that are currently running
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bool mRunning;
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// True if this is a repeating/interval timer
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bool mIsInterval;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_timeout_h
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