mirror of
https://github.com/mozilla/gecko-dev.git
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a7526d2a34
Use the actual Locked<T> types around (via a typedef, just for convenience). Differential Revision: https://phabricator.services.mozilla.com/D177824
365 lines
9.9 KiB
C++
365 lines
9.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/CSSKeyframesRule.h"
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#include "mozilla/dom/CSSKeyframesRuleBinding.h"
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#include "mozilla/dom/CSSRuleList.h"
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#include "mozilla/ServoBindings.h"
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#include "nsCOMArray.h"
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#include <limits>
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namespace mozilla::dom {
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// -------------------------------------------
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// CSSKeyframeList
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//
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class CSSKeyframeList : public dom::CSSRuleList {
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public:
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CSSKeyframeList(already_AddRefed<StyleLockedKeyframesRule> aRawRule,
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StyleSheet* aSheet, CSSKeyframesRule* aParentRule)
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: mStyleSheet(aSheet), mParentRule(aParentRule), mRawRule(aRawRule) {
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mRules.SetCount(Servo_KeyframesRule_GetCount(mRawRule));
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}
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(CSSKeyframeList, dom::CSSRuleList)
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void SetRawAfterClone(RefPtr<StyleLockedKeyframesRule> aRaw) {
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mRawRule = std::move(aRaw);
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uint32_t index = 0;
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for (css::Rule* rule : mRules) {
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if (rule) {
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uint32_t line = 0, column = 0;
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RefPtr<StyleLockedKeyframe> keyframe =
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Servo_KeyframesRule_GetKeyframeAt(mRawRule, index, &line, &column)
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.Consume();
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static_cast<CSSKeyframeRule*>(rule)->SetRawAfterClone(
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std::move(keyframe));
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}
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index++;
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}
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}
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void DropSheetReference() {
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if (!mStyleSheet) {
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return;
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}
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mStyleSheet = nullptr;
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for (css::Rule* rule : mRules) {
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if (rule) {
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rule->DropSheetReference();
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}
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}
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}
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StyleSheet* GetParentObject() final { return mStyleSheet; }
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CSSKeyframeRule* GetRule(uint32_t aIndex) {
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if (!mRules[aIndex]) {
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uint32_t line = 0, column = 0;
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RefPtr<StyleLockedKeyframe> rule =
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Servo_KeyframesRule_GetKeyframeAt(mRawRule, aIndex, &line, &column)
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.Consume();
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CSSKeyframeRule* ruleObj = new CSSKeyframeRule(rule.forget(), mStyleSheet,
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mParentRule, line, column);
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mRules.ReplaceObjectAt(ruleObj, aIndex);
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}
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return static_cast<CSSKeyframeRule*>(mRules[aIndex]);
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}
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CSSKeyframeRule* IndexedGetter(uint32_t aIndex, bool& aFound) final {
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if (aIndex >= mRules.Length()) {
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aFound = false;
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return nullptr;
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}
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aFound = true;
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return GetRule(aIndex);
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}
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void AppendRule() {
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MOZ_ASSERT(!mParentRule->IsReadOnly());
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mRules.AppendObject(nullptr);
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}
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void RemoveRule(uint32_t aIndex) {
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MOZ_ASSERT(!mParentRule->IsReadOnly());
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if (aIndex >= mRules.Length()) {
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return;
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}
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if (css::Rule* child = mRules[aIndex]) {
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child->DropReferences();
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}
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mRules.RemoveObjectAt(aIndex);
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}
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uint32_t Length() final { return mRules.Length(); }
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void DropReferences() {
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if (!mStyleSheet && !mParentRule) {
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return;
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}
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mStyleSheet = nullptr;
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mParentRule = nullptr;
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for (css::Rule* rule : mRules) {
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if (rule) {
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rule->DropParentRuleReference();
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rule->DropSheetReference();
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}
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}
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}
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size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
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size_t n = aMallocSizeOf(this);
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for (const css::Rule* rule : mRules) {
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n += rule ? rule->SizeOfIncludingThis(aMallocSizeOf) : 0;
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}
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return n;
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}
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private:
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virtual ~CSSKeyframeList() {
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MOZ_ASSERT(!mParentRule, "Backpointer should have been cleared");
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MOZ_ASSERT(!mStyleSheet, "Backpointer should have been cleared");
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DropAllRules();
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}
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void DropAllRules() {
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DropReferences();
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mRules.Clear();
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mRawRule = nullptr;
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}
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// may be nullptr when the style sheet drops the reference to us.
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StyleSheet* mStyleSheet = nullptr;
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CSSKeyframesRule* mParentRule = nullptr;
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RefPtr<StyleLockedKeyframesRule> mRawRule;
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nsCOMArray<css::Rule> mRules;
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};
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// QueryInterface implementation for CSSKeyframeList
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CSSKeyframeList)
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NS_INTERFACE_MAP_END_INHERITING(dom::CSSRuleList)
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NS_IMPL_ADDREF_INHERITED(CSSKeyframeList, dom::CSSRuleList)
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NS_IMPL_RELEASE_INHERITED(CSSKeyframeList, dom::CSSRuleList)
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NS_IMPL_CYCLE_COLLECTION_CLASS(CSSKeyframeList)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(CSSKeyframeList)
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tmp->DropAllRules();
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END_INHERITED(dom::CSSRuleList)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(CSSKeyframeList,
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dom::CSSRuleList)
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for (css::Rule* rule : tmp->mRules) {
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if (rule) {
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NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mRules[i]");
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cb.NoteXPCOMChild(rule);
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}
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}
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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// -------------------------------------------
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// CSSKeyframesRule
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//
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CSSKeyframesRule::CSSKeyframesRule(RefPtr<StyleLockedKeyframesRule> aRawRule,
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StyleSheet* aSheet, css::Rule* aParentRule,
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uint32_t aLine, uint32_t aColumn)
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: css::Rule(aSheet, aParentRule, aLine, aColumn),
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mRawRule(std::move(aRawRule)) {}
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CSSKeyframesRule::~CSSKeyframesRule() {
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if (mKeyframeList) {
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mKeyframeList->DropReferences();
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}
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}
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NS_IMPL_ADDREF_INHERITED(CSSKeyframesRule, css::Rule)
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NS_IMPL_RELEASE_INHERITED(CSSKeyframesRule, css::Rule)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CSSKeyframesRule)
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NS_INTERFACE_MAP_END_INHERITING(css::Rule)
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NS_IMPL_CYCLE_COLLECTION_CLASS(CSSKeyframesRule)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(CSSKeyframesRule, css::Rule)
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if (tmp->mKeyframeList) {
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tmp->mKeyframeList->DropReferences();
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tmp->mKeyframeList = nullptr;
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}
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(CSSKeyframesRule, Rule)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mKeyframeList)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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/* virtual */
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bool CSSKeyframesRule::IsCCLeaf() const {
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// If we don't have rule list constructed, we are a leaf.
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return Rule::IsCCLeaf() && !mKeyframeList;
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}
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StyleCssRuleType CSSKeyframesRule::Type() const {
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return StyleCssRuleType::Keyframes;
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}
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void CSSKeyframesRule::SetRawAfterClone(RefPtr<StyleLockedKeyframesRule> aRaw) {
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mRawRule = std::move(aRaw);
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if (mKeyframeList) {
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mKeyframeList->SetRawAfterClone(mRawRule);
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}
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}
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#ifdef DEBUG
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/* virtual */
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void CSSKeyframesRule::List(FILE* out, int32_t aIndent) const {
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nsAutoCString str;
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for (int32_t i = 0; i < aIndent; i++) {
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str.AppendLiteral(" ");
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}
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Servo_KeyframesRule_Debug(mRawRule, &str);
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fprintf_stderr(out, "%s\n", str.get());
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}
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#endif
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/* virtual */
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void CSSKeyframesRule::DropSheetReference() {
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if (mKeyframeList) {
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mKeyframeList->DropSheetReference();
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}
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css::Rule::DropSheetReference();
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}
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static const uint32_t kRuleNotFound = std::numeric_limits<uint32_t>::max();
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uint32_t CSSKeyframesRule::FindRuleIndexForKey(const nsAString& aKey) {
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NS_ConvertUTF16toUTF8 key(aKey);
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return Servo_KeyframesRule_FindRule(mRawRule, &key);
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}
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template <typename Func>
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nsresult CSSKeyframesRule::UpdateRule(Func aCallback) {
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if (IsReadOnly()) {
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return NS_OK;
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}
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StyleSheet* sheet = GetStyleSheet();
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if (sheet) {
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sheet->WillDirty();
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}
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aCallback();
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if (sheet) {
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sheet->RuleChanged(this, StyleRuleChangeKind::Generic);
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}
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return NS_OK;
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}
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void CSSKeyframesRule::GetName(nsAString& aName) const {
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nsAtom* name = Servo_KeyframesRule_GetName(mRawRule);
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aName = nsDependentAtomString(name);
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}
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void CSSKeyframesRule::SetName(const nsAString& aName) {
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RefPtr<nsAtom> name = NS_Atomize(aName);
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nsAtom* oldName = Servo_KeyframesRule_GetName(mRawRule);
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if (name == oldName) {
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return;
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}
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UpdateRule([this, &name]() {
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Servo_KeyframesRule_SetName(mRawRule, name.forget().take());
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});
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}
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void CSSKeyframesRule::AppendRule(const nsAString& aRule) {
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StyleSheet* sheet = GetStyleSheet();
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if (!sheet) {
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// We cannot parse the rule if we don't have a stylesheet.
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return;
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}
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NS_ConvertUTF16toUTF8 rule(aRule);
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UpdateRule([this, sheet, &rule]() {
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bool parsedOk =
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Servo_KeyframesRule_AppendRule(mRawRule, sheet->RawContents(), &rule);
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if (parsedOk && mKeyframeList) {
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mKeyframeList->AppendRule();
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}
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});
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}
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void CSSKeyframesRule::DeleteRule(const nsAString& aKey) {
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auto index = FindRuleIndexForKey(aKey);
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if (index == kRuleNotFound) {
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return;
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}
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UpdateRule([this, index]() {
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Servo_KeyframesRule_DeleteRule(mRawRule, index);
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if (mKeyframeList) {
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mKeyframeList->RemoveRule(index);
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}
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});
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}
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/* virtual */
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void CSSKeyframesRule::GetCssText(nsACString& aCssText) const {
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Servo_KeyframesRule_GetCssText(mRawRule, &aCssText);
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}
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/* virtual */ dom::CSSRuleList* CSSKeyframesRule::CssRules() {
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return EnsureRules();
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}
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/* virtual */ dom::CSSKeyframeRule* CSSKeyframesRule::IndexedGetter(
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uint32_t aIndex, bool& aFound) {
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return EnsureRules()->IndexedGetter(aIndex, aFound);
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}
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/* virtual */ uint32_t CSSKeyframesRule::Length() {
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return EnsureRules()->Length();
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}
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/* virtual */ dom::CSSKeyframeRule* CSSKeyframesRule::FindRule(
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const nsAString& aKey) {
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auto index = FindRuleIndexForKey(aKey);
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if (index != kRuleNotFound) {
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return EnsureRules()->GetRule(index);
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}
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return nullptr;
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}
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/* virtual */
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size_t CSSKeyframesRule::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const {
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size_t n = aMallocSizeOf(this);
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if (mKeyframeList) {
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n += mKeyframeList->SizeOfIncludingThis(aMallocSizeOf);
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}
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return n;
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}
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/* virtual */
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JSObject* CSSKeyframesRule::WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return CSSKeyframesRule_Binding::Wrap(aCx, this, aGivenProto);
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}
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dom::CSSKeyframeList* CSSKeyframesRule::EnsureRules() {
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if (!mKeyframeList) {
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mKeyframeList = new CSSKeyframeList(do_AddRef(mRawRule), mSheet, this);
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}
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return mKeyframeList;
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}
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} // namespace mozilla::dom
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