The Tor Browser: dom/smil/nsSMILCSSProperty.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 CSS property on an element */

     8 #ifndef NS_SMILCSSPROPERTY_H_

     9 #define NS_SMILCSSPROPERTY_H_

    11 #include "mozilla/Attributes.h"

    12 #include "nsISMILAttr.h"

    13 #include "nsIAtom.h"

    14 #include "nsCSSProperty.h"

    15 #include "nsCSSValue.h"

    17 namespace mozilla {

    18 namespace dom {

    19 class Element;

    20 } // namespace dom

    21 } // namespace mozilla

    23 /**

    24  * nsSMILCSSProperty: Implements the nsISMILAttr interface for SMIL animations

    25  * that target CSS properties.  Represents a particular animation-targeted CSS

    26  * property on a particular element.

    27  */

    28 class nsSMILCSSProperty : public nsISMILAttr

    29 {

    30 public:

    31   /**

    32    * Constructs a new nsSMILCSSProperty.

    33    * @param  aPropID   The CSS property we're interested in animating.

    34    * @param  aElement  The element whose CSS property is being animated.

    35    */

    36   nsSMILCSSProperty(nsCSSProperty aPropID, mozilla::dom::Element* aElement);

    38   // nsISMILAttr methods

    39   virtual nsresult ValueFromString(const nsAString& aStr,

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

    41                                    nsSMILValue& aValue,

    42                                    bool& aPreventCachingOfSandwich) const MOZ_OVERRIDE;

    43   virtual nsSMILValue GetBaseValue() const MOZ_OVERRIDE;

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

    45   virtual void        ClearAnimValue() MOZ_OVERRIDE;

    47   /**

    48    * Utility method - returns true if the given property is supported for

    49    * SMIL animation.

    50    *

    51    * @param   aProperty  The property to check for animation support.

    52    * @return  true if the given property is supported for SMIL animation, or

    53    *          false otherwise

    54    */

    55   static bool IsPropertyAnimatable(nsCSSProperty aPropID);

    57 protected:

    58   nsCSSProperty mPropID;

    59   // Using non-refcounted pointer for mElement -- we know mElement will stay

    60   // alive for my lifetime because a nsISMILAttr (like me) only lives as long

    61   // as the Compositing step, and DOM elements don't get a chance to die during

    62   // that time.

    63   mozilla::dom::Element*   mElement;

    64 };

    66 #endif // NS_SMILCSSPROPERTY_H_

The Tor Browser / file revision

dom/smil/nsSMILCSSProperty.h@97036ab72558

dom/smil/nsSMILCSSProperty.h