The Tor Browser: dom/smil/nsSMILMappedAttribute.h@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 /* representation of a SMIL-animatable mapped attribute on an element */

     8 #ifndef NS_SMILMAPPEDATTRIBUTE_H_

     9 #define NS_SMILMAPPEDATTRIBUTE_H_

    11 #include "mozilla/Attributes.h"

    12 #include "nsSMILCSSProperty.h"

    14 /* We'll use the empty-string atom |nsGkAtoms::_empty| as the key for storing

    15  * an element's animated content style rule in its Property Table, under the

    16  * property-category SMIL_MAPPED_ATTR_ANIMVAL.  Everything else stored in that

    17  * category is keyed off of the XML attribute name, so the empty string is a

    18  * good "reserved" key to use for storing the style rule (since XML attributes

    19  * all have nonempty names).

    20  */

    21 #define SMIL_MAPPED_ATTR_STYLERULE_ATOM nsGkAtoms::_empty

    23 /**

    24  * nsSMILMappedAttribute: Implements the nsISMILAttr interface for SMIL

    25  * animations whose targets are attributes that map to CSS properties.  An

    26  * instance of this class represents a particular animation-targeted mapped

    27  * attribute on a particular element.

    28  */

    29 class nsSMILMappedAttribute : public nsSMILCSSProperty {

    30 public:

    31   /**

    32    * Constructs a new nsSMILMappedAttribute.

    33    *

    34    * @param  aPropID   The CSS property for the mapped attribute we're

    35    *                   interested in animating.

    36    * @param  aElement  The element whose attribute is being animated.

    37    */

    38   nsSMILMappedAttribute(nsCSSProperty aPropID, mozilla::dom::Element* aElement) :

    39     nsSMILCSSProperty(aPropID, aElement) {}

    41   // nsISMILAttr methods

    42   virtual nsresult ValueFromString(const nsAString& aStr,

    43                                    const mozilla::dom::SVGAnimationElement* aSrcElement,

    44                                    nsSMILValue& aValue,

    45                                    bool& aPreventCachingOfSandwich) const MOZ_OVERRIDE;

    46   virtual nsSMILValue GetBaseValue() const MOZ_OVERRIDE;

    47   virtual nsresult    SetAnimValue(const nsSMILValue& aValue) MOZ_OVERRIDE;

    48   virtual void        ClearAnimValue() MOZ_OVERRIDE;

    50 protected:

    51   // Helper Methods

    52   void FlushChangesToTargetAttr() const;

    53   already_AddRefed<nsIAtom> GetAttrNameAtom() const;

    54 };

    55 #endif // NS_SMILMAPPEDATTRIBUTE_H_

The Tor Browser / file revision

dom/smil/nsSMILMappedAttribute.h@97036ab72558

dom/smil/nsSMILMappedAttribute.h