gecko-dev/layout/style/ServoKeyframeRule.cpp

217 строки
5.6 KiB
C++

/* -*- 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/. */
#include "mozilla/ServoKeyframeRule.h"
#include "nsDOMCSSDeclaration.h"
#include "mozAutoDocUpdate.h"
namespace mozilla {
// -------------------------------------------
// ServoKeyframeDeclaration
//
class ServoKeyframeDeclaration : public nsDOMCSSDeclaration
{
public:
explicit ServoKeyframeDeclaration(ServoKeyframeRule* aRule)
: mRule(aRule)
{
mDecls = new ServoDeclarationBlock(
Servo_Keyframe_GetStyle(aRule->Raw()).Consume());
}
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_AMBIGUOUS(
ServoKeyframeDeclaration, nsICSSDeclaration)
NS_IMETHOD GetParentRule(nsIDOMCSSRule** aParent) final
{
NS_IF_ADDREF(*aParent = mRule);
return NS_OK;
}
void DropReference() { mRule = nullptr; }
DeclarationBlock* GetCSSDeclaration(Operation aOperation) final
{
return mDecls;
}
nsresult SetCSSDeclaration(DeclarationBlock* aDecls) final
{
if (!mRule) {
return NS_OK;
}
mRule->UpdateRule([this, aDecls]() {
if (mDecls != aDecls) {
mDecls->SetOwningRule(nullptr);
mDecls = aDecls->AsServo();
mDecls->SetOwningRule(mRule);
Servo_Keyframe_SetStyle(mRule->Raw(), mDecls->Raw());
}
});
return NS_OK;
}
void GetCSSParsingEnvironment(CSSParsingEnvironment& aCSSParseEnv) final
{
MOZ_ASSERT_UNREACHABLE("GetCSSParsingEnvironment "
"shouldn't be calling for a Servo rule");
GetCSSParsingEnvironmentForRule(mRule, aCSSParseEnv);
}
ServoCSSParsingEnvironment GetServoCSSParsingEnvironment() const final
{
return GetServoCSSParsingEnvironmentForRule(mRule);
}
nsIDocument* DocToUpdate() final { return nullptr; }
nsINode* GetParentObject() final
{
return mRule ? mRule->GetDocument() : nullptr;
}
size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const
{
size_t n = aMallocSizeOf(this);
// TODO we may want to add size of mDecls as well
return n;
}
private:
virtual ~ServoKeyframeDeclaration() {}
ServoKeyframeRule* mRule;
RefPtr<ServoDeclarationBlock> mDecls;
};
NS_IMPL_CYCLE_COLLECTING_ADDREF(ServoKeyframeDeclaration)
NS_IMPL_CYCLE_COLLECTING_RELEASE(ServoKeyframeDeclaration)
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(ServoKeyframeDeclaration)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ServoKeyframeDeclaration)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_END_INHERITING(nsDOMCSSDeclaration)
// -------------------------------------------
// ServoKeyframeRule
//
ServoKeyframeRule::~ServoKeyframeRule()
{
}
NS_IMPL_ADDREF_INHERITED(ServoKeyframeRule, dom::CSSKeyframeRule)
NS_IMPL_RELEASE_INHERITED(ServoKeyframeRule, dom::CSSKeyframeRule)
// QueryInterface implementation for nsCSSKeyframeRule
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ServoKeyframeRule)
NS_INTERFACE_MAP_END_INHERITING(dom::CSSKeyframeRule)
NS_IMPL_CYCLE_COLLECTION_CLASS(ServoKeyframeRule)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(ServoKeyframeRule,
dom::CSSKeyframeRule)
if (tmp->mDeclaration) {
tmp->mDeclaration->DropReference();
tmp->mDeclaration = nullptr;
}
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(ServoKeyframeRule,
dom::CSSKeyframeRule)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mDeclaration)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
bool
ServoKeyframeRule::IsCCLeaf() const
{
return Rule::IsCCLeaf() && !mDeclaration;
}
/* virtual */ already_AddRefed<css::Rule>
ServoKeyframeRule::Clone() const
{
// Rule::Clone is only used when CSSStyleSheetInner is cloned in
// preparation of being mutated. However, ServoStyleSheet never clones
// anything, so this method should never be called.
MOZ_ASSERT_UNREACHABLE("Shouldn't be cloning ServoKeyframeRule");
return nullptr;
}
#ifdef DEBUG
/* virtual */ void
ServoKeyframeRule::List(FILE* out, int32_t aIndent) const
{
nsAutoCString str;
for (int32_t i = 0; i < aIndent; i++) {
str.AppendLiteral(" ");
}
Servo_Keyframe_Debug(mRaw, &str);
fprintf_stderr(out, "%s\n", str.get());
}
#endif
template<typename Func>
void
ServoKeyframeRule::UpdateRule(Func aCallback)
{
nsIDocument* doc = GetDocument();
MOZ_AUTO_DOC_UPDATE(doc, UPDATE_STYLE, true);
aCallback();
if (StyleSheet* sheet = GetStyleSheet()) {
// FIXME sheet->AsGecko()->SetModifiedByChildRule();
if (doc) {
doc->StyleRuleChanged(sheet, this);
}
}
}
NS_IMETHODIMP
ServoKeyframeRule::GetKeyText(nsAString& aKeyText)
{
Servo_Keyframe_GetKeyText(mRaw, &aKeyText);
return NS_OK;
}
NS_IMETHODIMP
ServoKeyframeRule::SetKeyText(const nsAString& aKeyText)
{
NS_ConvertUTF16toUTF8 keyText(aKeyText);
UpdateRule([this, &keyText]() {
Servo_Keyframe_SetKeyText(mRaw, &keyText);
});
return NS_OK;
}
void
ServoKeyframeRule::GetCssTextImpl(nsAString& aCssText) const
{
Servo_Keyframe_GetCssText(mRaw, &aCssText);
}
nsICSSDeclaration*
ServoKeyframeRule::Style()
{
if (!mDeclaration) {
mDeclaration = new ServoKeyframeDeclaration(this);
}
return mDeclaration;
}
size_t
ServoKeyframeRule::SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const
{
size_t n = aMallocSizeOf(this);
if (mDeclaration) {
n += mDeclaration->SizeOfIncludingThis(aMallocSizeOf);
}
return n;
}
} // namespace mozilla