зеркало из https://github.com/mozilla/gecko-dev.git
121 строка
4.8 KiB
C++
121 строка
4.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Mozilla SMIL module.
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*
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* The Initial Developer of the Original Code is Brian Birtles.
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* Portions created by the Initial Developer are Copyright (C) 2005
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Brian Birtles <birtles@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef NS_SMILTIMEVALUESPEC_H_
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#define NS_SMILTIMEVALUESPEC_H_
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#include "nsSMILTimeValueSpecParams.h"
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#include "nsReferencedElement.h"
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#include "nsAutoPtr.h"
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class nsAString;
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class nsSMILTimeValue;
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class nsSMILTimedElement;
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class nsSMILTimeContainer;
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class nsSMILInstanceTime;
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class nsSMILInterval;
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//----------------------------------------------------------------------
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// nsSMILTimeValueSpec class
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//
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// An individual element of a 'begin' or 'end' attribute, e.g. '5s', 'a.end'.
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// This class handles the parsing of such specifications and performs the
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// necessary event handling (for event, repeat, and accesskey specifications)
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// and synchronisation (for syncbase specifications).
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//
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// For an overview of how this class is related to other SMIL time classes see
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// the documentation in nsSMILTimeValue.h
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class nsSMILTimeValueSpec
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{
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public:
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nsSMILTimeValueSpec(nsSMILTimedElement& aOwner, PRBool aIsBegin);
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~nsSMILTimeValueSpec();
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nsresult SetSpec(const nsAString& aStringSpec, nsIContent* aContextNode);
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void ResolveReferences(nsIContent* aContextNode);
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void HandleNewInterval(nsSMILInterval& aInterval,
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const nsSMILTimeContainer* aSrcContainer);
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// For created nsSMILInstanceTime objects
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PRBool DependsOnBegin() const;
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void HandleChangedInstanceTime(const nsSMILInstanceTime& aBaseTime,
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const nsSMILTimeContainer* aSrcContainer,
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nsSMILInstanceTime& aInstanceTimeToUpdate,
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PRBool aObjectChanged);
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void HandleDeletedInstanceTime(nsSMILInstanceTime& aInstanceTime);
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// Cycle-collection support
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void Traverse(nsCycleCollectionTraversalCallback* aCallback);
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void Unlink();
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protected:
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void UpdateTimebase(nsIContent* aFrom, nsIContent* aTo);
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void UnregisterFromTimebase(nsSMILTimedElement* aTimedElement);
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nsSMILTimedElement* GetTimedElementFromContent(nsIContent* aContent);
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nsSMILTimedElement* GetTimebaseElement();
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nsSMILTimeValue ConvertBetweenTimeContainers(const nsSMILTimeValue& aSrcTime,
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const nsSMILTimeContainer* aSrcContainer);
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nsSMILTimedElement* mOwner;
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PRPackedBool mIsBegin; // Indicates if *we* are a begin spec,
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// not to be confused with
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// mParams.mSyncBegin which indicates
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// if we're synced with the begin of
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// the target.
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nsSMILTimeValueSpecParams mParams;
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class TimebaseElement : public nsReferencedElement {
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public:
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TimebaseElement(nsSMILTimeValueSpec* aOwner) : mSpec(aOwner) { }
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protected:
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virtual void ContentChanged(nsIContent* aFrom, nsIContent* aTo) {
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nsReferencedElement::ContentChanged(aFrom, aTo);
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mSpec->UpdateTimebase(aFrom, aTo);
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}
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virtual PRBool IsPersistent() { return PR_TRUE; }
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private:
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nsSMILTimeValueSpec* mSpec;
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};
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TimebaseElement mTimebase;
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};
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#endif // NS_SMILTIMEVALUESPEC_H_
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