dom/svg/SVGAnimatedString.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "SVGAnimatedString.h"
   8
   9 #include <utility>
  10
  11 #include "SMILStringType.h"
  12 #include "SVGAttrTearoffTable.h"
  13 #include "mozilla/SMILValue.h"
  14
  15 using namespace mozilla::dom;
  16
  17 namespace mozilla {
  18
  19 /* Implementation */
  20
  21 void SVGAnimatedString::SetBaseValue(const nsAString& aValue,
  22                                      SVGElement* aSVGElement, bool aDoSetAttr) {
  23   NS_ASSERTION(aSVGElement, "Null element passed to SetBaseValue");
  24
  25   mIsBaseSet = true;
  26   if (aDoSetAttr) {
  27     aSVGElement->SetStringBaseValue(mAttrEnum, aValue);
  28   }
  29   if (mAnimVal) {
  30     aSVGElement->AnimationNeedsResample();
  31   }
  32
  33   aSVGElement->DidChangeString(mAttrEnum);
  34 }
  35
  36 void SVGAnimatedString::GetAnimValue(nsAString& aResult,
  37                                      const SVGElement* aSVGElement) const {
  38   if (mAnimVal) {
  39     aResult = *mAnimVal;
  40     return;
  41   }
  42
  43   aSVGElement->GetStringBaseValue(mAttrEnum, aResult);
  44 }
  45
  46 void SVGAnimatedString::SetAnimValue(const nsAString& aValue,
  47                                      SVGElement* aSVGElement) {
  48   if (aSVGElement->IsStringAnimatable(mAttrEnum)) {
  49     if (mAnimVal && mAnimVal->Equals(aValue)) {
  50       return;
  51     }
  52     if (!mAnimVal) {
  53       mAnimVal = MakeUnique<nsString>();
  54     }
  55     *mAnimVal = aValue;
  56     aSVGElement->DidAnimateString(mAttrEnum);
  57   }
  58 }
  59
  60 UniquePtr<SMILAttr> SVGAnimatedString::ToSMILAttr(SVGElement* aSVGElement) {
  61   return MakeUnique<SMILString>(this, aSVGElement);
  62 }
  63
  64 nsresult SVGAnimatedString::SMILString::ValueFromString(
  65     const nsAString& aStr, const dom::SVGAnimationElement* /*aSrcElement*/,
  66     SMILValue& aValue, bool& aPreventCachingOfSandwich) const {
  67   SMILValue val(SMILStringType::Singleton());
  68
  69   *static_cast<nsAString*>(val.mU.mPtr) = aStr;
  70   aValue = std::move(val);
  71   return NS_OK;
  72 }
  73
  74 SMILValue SVGAnimatedString::SMILString::GetBaseValue() const {
  75   SMILValue val(SMILStringType::Singleton());
  76   mSVGElement->GetStringBaseValue(mVal->mAttrEnum,
  77                                   *static_cast<nsAString*>(val.mU.mPtr));
  78   return val;
  79 }
  80
  81 void SVGAnimatedString::SMILString::ClearAnimValue() {
  82   if (mVal->mAnimVal) {
  83     mVal->mAnimVal = nullptr;
  84     mSVGElement->DidAnimateString(mVal->mAttrEnum);
  85   }
  86 }
  87
  88 nsresult SVGAnimatedString::SMILString::SetAnimValue(const SMILValue& aValue) {
  89   NS_ASSERTION(aValue.mType == SMILStringType::Singleton(),
  90                "Unexpected type to assign animated value");
  91   if (aValue.mType == SMILStringType::Singleton()) {
  92     mVal->SetAnimValue(*static_cast<nsAString*>(aValue.mU.mPtr), mSVGElement);
  93   }
  94   return NS_OK;
  95 }
  96
  97 }  // namespace mozilla