gecko/content/smil/nsSMILSetAnimationFunction.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Mozilla SMIL module.
*
* The Initial Developer of the Original Code is Brian Birtles.
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Brian Birtles <birtles@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef NS_SMILSETANIMATIONFUNCTION_H_
#define NS_SMILSETANIMATIONFUNCTION_H_
#include "nsSMILAnimationFunction.h"
//----------------------------------------------------------------------
// nsSMILSetAnimationFunction
//
// Subclass of nsSMILAnimationFunction that limits the behaviour to that offered
// by a <set> element.
//
class nsSMILSetAnimationFunction : public nsSMILAnimationFunction
{
public:
/*
* Sets animation-specific attributes (or marks them dirty, in the case
* of from/to/by/values).
*
* @param aAttribute The attribute being set
* @param aValue The updated value of the attribute.
* @param aResult The nsAttrValue object that may be used for storing the
* parsed result.
* @param aParseResult Outparam used for reporting parse errors. Will be set
* to NS_OK if everything succeeds.
* @returns PR_TRUE if aAttribute is a recognized animation-related
* attribute; PR_FALSE otherwise.
*/
virtual PRBool SetAttr(nsIAtom* aAttribute, const nsAString& aValue,
nsAttrValue& aResult, nsresult* aParseResult = nsnull);
/*
* Unsets the given attribute.
*
* @returns PR_TRUE if aAttribute is a recognized animation-related
* attribute; PR_FALSE otherwise.
*/
NS_OVERRIDE virtual PRBool UnsetAttr(nsIAtom* aAttribute);
protected:
// Although <set> animation might look like to-animation, unlike to-animation,
// it never interpolates values.
// Returning PR_FALSE here will mean this animation function gets treated as
// a single-valued function and no interpolation will be attempted.
NS_OVERRIDE virtual PRBool IsToAnimation() const {
return PR_FALSE;
}
// <set> applies the exact same value across the simple duration.
NS_OVERRIDE virtual PRBool IsValueFixedForSimpleDuration() const {
return PR_TRUE;
}
NS_OVERRIDE virtual PRBool HasAttr(nsIAtom* aAttName) const;
NS_OVERRIDE virtual const nsAttrValue* GetAttr(nsIAtom* aAttName) const;
NS_OVERRIDE virtual PRBool GetAttr(nsIAtom* aAttName,
nsAString& aResult) const;
NS_OVERRIDE virtual PRBool WillReplace() const;
PRBool IsDisallowedAttribute(const nsIAtom* aAttribute) const;
};
#endif // NS_SMILSETANIMATIONFUNCTION_H_