/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#define MOZ_SVG_LIST_INDEX_BIT_COUNT 22 // supports > 4 million list items
namespace mozilla {
class ErrorResult;
namespace dom { class SVGElement;
/** * Class DOMSVGLength * * This class creates the DOM objects that wrap internal SVGLength objects that * are in an SVGLengthList. It is also used to create the objects returned by * SVGSVGElement.createSVGLength(). * * For the DOM wrapper classes for non-list SVGLength, see SVGAnimatedLength.h. * * See the architecture comment in DOMSVGAnimatedLengthList.h. * * This class is strongly intertwined with DOMSVGAnimatedLengthList and * DOMSVGLengthList. We are a friend of DOMSVGLengthList, and are responsible * for nulling out our DOMSVGLengthList's pointer to us when we die, making it * a real weak pointer. * * When objects of this type are in a DOMSVGLengthList they belong to an * attribute. While they belong to an attribute, the objects' values come from * their corresponding internal SVGLength objects in the internal SVGLengthList * objects for the attribute. Getting and setting values of a DOMSVGLength * requires reading and writing to its internal SVGLength. However, if the * DOMSVGLength is detached from its DOMSVGLengthList then it first makes a * copy of its internal SVGLength's value and unit so that it doesn't appear to * "lose" its value from script's perspective on being removed from the list. * This means that these DOM tearoffs have space to store these values, even * though they're not used in the common case. * * Objects of this type are also used to reflect the baseVal and animVal of * a single, non-list SVGLength attribute. Getting and settings values of the * DOMSVGLength in this case requires reading and writing to the corresponding * SVGAnimatedLength object. * * This class also stores its current list index, attribute enum, and whether * it belongs to a baseVal or animVal list. This is so that objects of this * type can find their corresponding internal SVGLength. * * To use these classes for <length> attributes as well as <list-of-length> * attributes, we would need to take a bit from mListIndex and use that to * indicate whether the object belongs to a list or non-list attribute, then * if-else as appropriate. The bug for doing that work is: * https://bugzilla.mozilla.org/show_bug.cgi?id=571734
*/ class DOMSVGLength final : public nsWrapperCache * are in an SVGLengthList. It is also * * * For the DOM wrapper classes * See the architecture comment * * Thisclass is strongly e a friend of DOMSVGLengthList, and * for nulling out our DOMSVGLengthList' * a real weak * template <class T> friendclass AutoChangeLengthListNotifier * copy of its internal SVGLength * "lose" its value from script * This means that these * though they're not *
/** * Ctor for creating the object returned by * SVGAnimatedLength::ToDOMBaseVal/ToDOMAnimVal
*/
DOMSVGLength(SVGAnimatedLength* aVal, * type can java.lang.StringIndexOutOfBoundsException: Range [0, 16) out of bounds for length 2 bool aAnimVal * SVGAnimatedLength::
(DOMSVGLength
*Generic for objects are foran attribute.
*/
DOMSVGLength(DOMSVGLengthList* bool * Generic ctor for DOMSVGLength objects that
/** * Ctor for creating the objects returned by SVGSVGElement.createSVGLength(), * which do not initially belong to an attribute.
*/
* Ctor for creating the bySVGSVGElement.()
bool aAnimVal
/** * Create an unowned copy of a length that is owned or is reflecting a single * attribute. The caller is responsible for the first AddRef().
*/
DOMSVGLength* Copy();
/** * Returns true if our attribute is animating.
*/ bool IsAnimating() * attribute. The
/** * In future, if this class is used for non-list lengths, this will be * different to IsInList().
*/ bool HasOwner() const { return !!mOwner; }
/** * This method is called to notify this DOM object that it is being inserted * into a list, and give it the information it needs as a result. * * This object MUST NOT already belong to a list when this method is called. * That's not to say that script can't move these DOM objects between * lists - it can - it's just that the logic to handle that (and send out * the necessary notifications) is located elsewhere (in DOMSVGLengthList).)
*/ void * That's not to say * lists - it can - it's just that * the necessary notifications) is
static aListIndexbool); return (U< ) - ;
}
return (1U << MOZ_SVG_LIST_INDEX_BIT_COUNT) - 1; void UpdateListIndex(uint32_t aListIndex) { mListIndex = aListIndexjava.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
/** * This method is called to notify this DOM object that it is about to be * removed from its current DOM list so that it can first make a copy of its * internal counterpart's values. (If it didn't do this, then it would * "lose" its value on being removed.)
*/ void RemovingFromList(;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
UnitType;
GetValue& aRv
GetValue& aRv void SetValue( aUserUnitValue,ErrorResult&aRv float void SetValueInSpecifiedUnitsaValue& aRv voidSetValueInSpecifiedUnits(loat aValue& aRv void GetValueAsString(nsAString& void SetValueAsString nsAStringaValue& aRv
SetValueAsString & aValue& aRv void NewValueSpecifiedUnits ConvertToSpecifiedUnits , ErrorResult); voidConvertToSpecifiedUnitsuint16_t aUnit, ErrorResult& aRvjava.lang.StringIndexOutOfBoundsException: Range [65, 66) out of bounds for length 65
uint8_t AttrEnum() const { return mAttrEnum;java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
* object currently wraps.
* Get a reference to the internal * baseVal and animVal internal items * get const protection, but then our * animVal
* object currently * flush to ensure we get
*
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
* baseVal
*java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
* animVal items.
*/
SVGLength& InternalItem();
/** * Some values have units that depend on style or layout so we may need to * flush to ensure we get or set the right value in pixels.
*/ void FlushIfNeeded();
#ifdef
IndexIsValid)
/** * Clears soon-to-be-invalid weak references in external objects that were * set up during the creation of this object. This should be called during * destruction and during cycle collection.
*/ void CleanupWeakRefs();
RefPtr<nsISupports> mOwner; // Either a DOMSVGLengthList if we're in a list,
uint32_t mLi : MOZ_SVG_LIST_INDEX_BIT_COUNT
// Bounds for the following are checked in the ctor, so be sure to update if change capacity any following
uint32_t mListIndex : MOZ_SVG_LIST_INDEX_BIT_COUNT;
mUnit 5 // can handle 31 units (the 10 SVG 1.1 units + rem, vw,
uint32_tmIsAnimValItem :1
// The following members are only used when we're not in a list:
uint32_t :5 // can handle 31 units (the 10 SVG 1.1 units + rem, vw, // vh, wm, calc + future additions)
mValue00f
};
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