mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-10 11:54:40 +00:00
210 lines
6.2 KiB
C++
210 lines
6.2 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/. */
|
|
|
|
/*
|
|
* style sheet and style rule processor representing style attributes
|
|
*/
|
|
|
|
#include "nsHTMLCSSStyleSheet.h"
|
|
#include "mozilla/MemoryReporting.h"
|
|
#include "mozilla/css/StyleRule.h"
|
|
#include "nsIStyleRuleProcessor.h"
|
|
#include "nsPresContext.h"
|
|
#include "nsRuleWalker.h"
|
|
#include "nsRuleProcessorData.h"
|
|
#include "mozilla/dom/Element.h"
|
|
#include "nsAttrValue.h"
|
|
#include "nsAttrValueInlines.h"
|
|
#include "RestyleManager.h"
|
|
|
|
using namespace mozilla;
|
|
using namespace mozilla::dom;
|
|
|
|
nsHTMLCSSStyleSheet::nsHTMLCSSStyleSheet()
|
|
{
|
|
}
|
|
|
|
nsHTMLCSSStyleSheet::~nsHTMLCSSStyleSheet()
|
|
{
|
|
// We may go away before all of our cached style attributes do,
|
|
// so clean up any that are left.
|
|
for (auto iter = mCachedStyleAttrs.Iter(); !iter.Done(); iter.Next()) {
|
|
MiscContainer*& value = iter.Data();
|
|
|
|
// Ideally we'd just call MiscContainer::Evict, but we can't do that since
|
|
// we're iterating the hashtable.
|
|
MOZ_ASSERT(value->mType == nsAttrValue::eCSSDeclaration);
|
|
|
|
css::Declaration* declaration = value->mValue.mCSSDeclaration;
|
|
declaration->SetHTMLCSSStyleSheet(nullptr);
|
|
value->mValue.mCached = 0;
|
|
|
|
iter.Remove();
|
|
}
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS(nsHTMLCSSStyleSheet, nsIStyleRuleProcessor)
|
|
|
|
/* virtual */ void
|
|
nsHTMLCSSStyleSheet::RulesMatching(ElementRuleProcessorData* aData)
|
|
{
|
|
ElementRulesMatching(aData->mPresContext, aData->mElement,
|
|
aData->mRuleWalker);
|
|
}
|
|
|
|
void
|
|
nsHTMLCSSStyleSheet::ElementRulesMatching(nsPresContext* aPresContext,
|
|
Element* aElement,
|
|
nsRuleWalker* aRuleWalker)
|
|
{
|
|
// just get the one and only style rule from the content's STYLE attribute
|
|
css::Declaration* declaration = aElement->GetInlineStyleDeclaration();
|
|
if (declaration) {
|
|
declaration->SetImmutable();
|
|
aRuleWalker->Forward(declaration);
|
|
}
|
|
|
|
declaration = aElement->GetSMILOverrideStyleDeclaration();
|
|
if (declaration) {
|
|
RestyleManager* restyleManager = aPresContext->RestyleManager();
|
|
if (!restyleManager->SkipAnimationRules()) {
|
|
// Animation restyle (or non-restyle traversal of rules)
|
|
// Now we can walk SMIL overrride style, without triggering transitions.
|
|
declaration->SetImmutable();
|
|
aRuleWalker->Forward(declaration);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsHTMLCSSStyleSheet::PseudoElementRulesMatching(Element* aPseudoElement,
|
|
nsCSSPseudoElements::Type
|
|
aPseudoType,
|
|
nsRuleWalker* aRuleWalker)
|
|
{
|
|
MOZ_ASSERT(nsCSSPseudoElements::
|
|
PseudoElementSupportsStyleAttribute(aPseudoType));
|
|
MOZ_ASSERT(aPseudoElement);
|
|
|
|
// just get the one and only style rule from the content's STYLE attribute
|
|
css::Declaration* declaration = aPseudoElement->GetInlineStyleDeclaration();
|
|
if (declaration) {
|
|
declaration->SetImmutable();
|
|
aRuleWalker->Forward(declaration);
|
|
}
|
|
}
|
|
|
|
/* virtual */ void
|
|
nsHTMLCSSStyleSheet::RulesMatching(PseudoElementRuleProcessorData* aData)
|
|
{
|
|
if (nsCSSPseudoElements::PseudoElementSupportsStyleAttribute(aData->mPseudoType) &&
|
|
aData->mPseudoElement) {
|
|
PseudoElementRulesMatching(aData->mPseudoElement, aData->mPseudoType,
|
|
aData->mRuleWalker);
|
|
}
|
|
}
|
|
|
|
/* virtual */ void
|
|
nsHTMLCSSStyleSheet::RulesMatching(AnonBoxRuleProcessorData* aData)
|
|
{
|
|
}
|
|
|
|
#ifdef MOZ_XUL
|
|
/* virtual */ void
|
|
nsHTMLCSSStyleSheet::RulesMatching(XULTreeRuleProcessorData* aData)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
// Test if style is dependent on content state
|
|
/* virtual */ nsRestyleHint
|
|
nsHTMLCSSStyleSheet::HasStateDependentStyle(StateRuleProcessorData* aData)
|
|
{
|
|
return nsRestyleHint(0);
|
|
}
|
|
|
|
/* virtual */ nsRestyleHint
|
|
nsHTMLCSSStyleSheet::HasStateDependentStyle(PseudoElementStateRuleProcessorData* aData)
|
|
{
|
|
return nsRestyleHint(0);
|
|
}
|
|
|
|
/* virtual */ bool
|
|
nsHTMLCSSStyleSheet::HasDocumentStateDependentStyle(StateRuleProcessorData* aData)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// Test if style is dependent on attribute
|
|
/* virtual */ nsRestyleHint
|
|
nsHTMLCSSStyleSheet::HasAttributeDependentStyle(
|
|
AttributeRuleProcessorData* aData,
|
|
RestyleHintData& aRestyleHintDataResult)
|
|
{
|
|
// Perhaps should check that it's XUL, SVG, (or HTML) namespace, but
|
|
// it doesn't really matter.
|
|
if (aData->mAttrHasChanged && aData->mAttribute == nsGkAtoms::style) {
|
|
return eRestyle_StyleAttribute;
|
|
}
|
|
|
|
return nsRestyleHint(0);
|
|
}
|
|
|
|
/* virtual */ bool
|
|
nsHTMLCSSStyleSheet::MediumFeaturesChanged(nsPresContext* aPresContext)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
/* virtual */ size_t
|
|
nsHTMLCSSStyleSheet::SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
|
|
{
|
|
// The size of mCachedStyleAttrs's mTable member (a PLDHashTable) is
|
|
// significant in itself, but more significant is the size of the nsString
|
|
// members of the nsStringHashKeys.
|
|
size_t n = 0;
|
|
n += mCachedStyleAttrs.ShallowSizeOfExcludingThis(aMallocSizeOf);
|
|
for (auto iter = mCachedStyleAttrs.ConstIter(); !iter.Done(); iter.Next()) {
|
|
// We don't own the MiscContainers (the hash table values) so we don't
|
|
// count them. We do care about the size of the nsString members in the
|
|
// keys though.
|
|
n += iter.Key().SizeOfExcludingThisIfUnshared(aMallocSizeOf);
|
|
}
|
|
return n;
|
|
}
|
|
|
|
/* virtual */ size_t
|
|
nsHTMLCSSStyleSheet::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
|
|
{
|
|
return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
|
|
}
|
|
|
|
void
|
|
nsHTMLCSSStyleSheet::CacheStyleAttr(const nsAString& aSerialized,
|
|
MiscContainer* aValue)
|
|
{
|
|
mCachedStyleAttrs.Put(aSerialized, aValue);
|
|
}
|
|
|
|
void
|
|
nsHTMLCSSStyleSheet::EvictStyleAttr(const nsAString& aSerialized,
|
|
MiscContainer* aValue)
|
|
{
|
|
#ifdef DEBUG
|
|
{
|
|
NS_ASSERTION(aValue == mCachedStyleAttrs.Get(aSerialized),
|
|
"Cached value does not match?!");
|
|
}
|
|
#endif
|
|
mCachedStyleAttrs.Remove(aSerialized);
|
|
}
|
|
|
|
MiscContainer*
|
|
nsHTMLCSSStyleSheet::LookupStyleAttr(const nsAString& aSerialized)
|
|
{
|
|
return mCachedStyleAttrs.Get(aSerialized);
|
|
}
|