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gecko-dev/layout/style/nsCSSStyleRule.cpp
dbaron%dbaron.org 0a143da53b Put more information on the CSS properties in nsCSSPropList.h. 
Use the property list in the tables for nsRuleNode::CheckSpecifiedProperties.
To reduce heap usage, redesign the storage of properties and values in nsCSSDeclaration to allocate all property-value pairs in a declaration block in a single allocation, and use temporary structures (like the old permanent structures) during parsing and modification.  Replace per-property switch statements in nsCSSDeclaration with table-based code to reduce code size.
b=125246  r+sr=bzbarsky
2003-06-07 22:14:42 +00:00

1471 lines
38 KiB
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* David Hyatt <hyatt@netscape.com>
* Daniel Glazman <glazman@netscape.com>
*
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the NPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsCOMPtr.h"
#include "nsCSSRule.h"
#include "nsICSSStyleRule.h"
#include "nsICSSGroupRule.h"
#include "nsCSSDeclaration.h"
#include "nsICSSStyleSheet.h"
#include "nsICSSParser.h"
#include "nsICSSLoader.h"
#include "nsIHTMLContentContainer.h"
#include "nsIURL.h"
#include "nsIPresContext.h"
#include "nsIDocument.h"
#include "nsIDeviceContext.h"
#include "nsIArena.h"
#include "nsIAtom.h"
#include "nsCRT.h"
#include "nsString.h"
#include "nsStyleConsts.h"
#include "nsHTMLAtoms.h"
#include "nsUnitConversion.h"
#include "nsIFontMetrics.h"
#include "nsIDOMCSSStyleSheet.h"
#include "nsIDOMCSSRule.h"
#include "nsIDOMCSSStyleRule.h"
#include "nsIDOMCSSStyleDeclaration.h"
#include "nsDOMCSSDeclaration.h"
#include "nsINameSpaceManager.h"
#include "nsINameSpace.h"
#include "nsILookAndFeel.h"
#include "nsRuleNode.h"
#include "nsUnicharUtils.h"
#include "nsIStyleSet.h"
#include "nsContentUtils.h"
#include "nsContentErrors.h"
// -- nsCSSSelector -------------------------------
#define NS_IF_COPY(dest,source,type) \
if (nsnull != source) dest = new type(*(source))
#define NS_IF_DELETE(ptr) \
if (nsnull != ptr) { delete ptr; ptr = nsnull; }
#define NS_IF_NEGATED_START(bool,str) \
if (bool) { str.Append(NS_LITERAL_STRING(":not(")); }
#define NS_IF_NEGATED_END(bool,str) \
if (bool) { str.Append(PRUnichar(')')); }
MOZ_DECL_CTOR_COUNTER(nsAtomList)
nsAtomList::nsAtomList(nsIAtom* aAtom)
: mAtom(aAtom),
mNext(nsnull)
{
MOZ_COUNT_CTOR(nsAtomList);
}
nsAtomList::nsAtomList(const nsString& aAtomValue)
: mAtom(nsnull),
mNext(nsnull)
{
MOZ_COUNT_CTOR(nsAtomList);
mAtom = do_GetAtom(aAtomValue);
}
nsAtomList::nsAtomList(const nsAtomList& aCopy)
: mAtom(aCopy.mAtom),
mNext(nsnull)
{
MOZ_COUNT_CTOR(nsAtomList);
NS_IF_COPY(mNext, aCopy.mNext, nsAtomList);
}
nsAtomList::~nsAtomList(void)
{
MOZ_COUNT_DTOR(nsAtomList);
NS_IF_DELETE(mNext);
}
PRBool nsAtomList::Equals(const nsAtomList* aOther) const
{
if (this == aOther) {
return PR_TRUE;
}
if (nsnull != aOther) {
if (mAtom == aOther->mAtom) {
if (nsnull != mNext) {
return mNext->Equals(aOther->mNext);
}
return PRBool(nsnull == aOther->mNext);
}
}
return PR_FALSE;
}
MOZ_DECL_CTOR_COUNTER(nsAtomStringList)
nsAtomStringList::nsAtomStringList(nsIAtom* aAtom, const PRUnichar* aString)
: mAtom(aAtom),
mString(nsnull),
mNext(nsnull)
{
MOZ_COUNT_CTOR(nsAtomStringList);
if (aString)
mString = nsCRT::strdup(aString);
}
nsAtomStringList::nsAtomStringList(const nsString& aAtomValue,
const PRUnichar* aString)
: mAtom(nsnull),
mString(nsnull),
mNext(nsnull)
{
MOZ_COUNT_CTOR(nsAtomStringList);
mAtom = do_GetAtom(aAtomValue);
if (aString)
mString = nsCRT::strdup(aString);
}
nsAtomStringList::nsAtomStringList(const nsAtomStringList& aCopy)
: mAtom(aCopy.mAtom),
mString(nsnull),
mNext(nsnull)
{
MOZ_COUNT_CTOR(nsAtomStringList);
if (aCopy.mString)
mString = nsCRT::strdup(aCopy.mString);
NS_IF_COPY(mNext, aCopy.mNext, nsAtomStringList);
}
nsAtomStringList::~nsAtomStringList(void)
{
MOZ_COUNT_DTOR(nsAtomStringList);
if (mString)
nsCRT::free(mString);
NS_IF_DELETE(mNext);
}
PRBool nsAtomStringList::Equals(const nsAtomStringList* aOther) const
{
return (this == aOther) ||
(aOther &&
mAtom == aOther->mAtom &&
!mString == !aOther->mString &&
!mNext == !aOther->mNext &&
(!mNext || mNext->Equals(aOther->mNext)) &&
// Check strings last, since it's the slowest check.
(!mString || nsDependentString(mString).Equals(
nsDependentString(aOther->mString),
nsCaseInsensitiveStringComparator())));
}
MOZ_DECL_CTOR_COUNTER(nsAttrSelector)
nsAttrSelector::nsAttrSelector(PRInt32 aNameSpace, const nsString& aAttr)
: mNameSpace(aNameSpace),
mAttr(nsnull),
mFunction(NS_ATTR_FUNC_SET),
mCaseSensitive(1),
mValue(),
mNext(nsnull)
{
MOZ_COUNT_CTOR(nsAttrSelector);
mAttr = NS_NewAtom(aAttr);
}
nsAttrSelector::nsAttrSelector(PRInt32 aNameSpace, const nsString& aAttr, PRUint8 aFunction,
const nsString& aValue, PRBool aCaseSensitive)
: mNameSpace(aNameSpace),
mAttr(nsnull),
mFunction(aFunction),
mCaseSensitive(aCaseSensitive),
mValue(aValue),
mNext(nsnull)
{
MOZ_COUNT_CTOR(nsAttrSelector);
mAttr = NS_NewAtom(aAttr);
}
nsAttrSelector::nsAttrSelector(const nsAttrSelector& aCopy)
: mNameSpace(aCopy.mNameSpace),
mAttr(aCopy.mAttr),
mFunction(aCopy.mFunction),
mCaseSensitive(aCopy.mCaseSensitive),
mValue(aCopy.mValue),
mNext(nsnull)
{
MOZ_COUNT_CTOR(nsAttrSelector);
NS_IF_ADDREF(mAttr);
NS_IF_COPY(mNext, aCopy.mNext, nsAttrSelector);
}
nsAttrSelector::~nsAttrSelector(void)
{
MOZ_COUNT_DTOR(nsAttrSelector);
NS_IF_RELEASE(mAttr);
NS_IF_DELETE(mNext);
}
PRBool nsAttrSelector::Equals(const nsAttrSelector* aOther) const
{
if (this == aOther) {
return PR_TRUE;
}
if (nsnull != aOther) {
if ((mNameSpace == aOther->mNameSpace) &&
(mAttr == aOther->mAttr) &&
(mFunction == aOther->mFunction) &&
(mCaseSensitive == aOther->mCaseSensitive) &&
mValue.Equals(aOther->mValue)) {
if (nsnull != mNext) {
return mNext->Equals(aOther->mNext);
}
return PRBool(nsnull == aOther->mNext);
}
}
return PR_FALSE;
}
MOZ_DECL_CTOR_COUNTER(nsCSSSelector)
nsCSSSelector::nsCSSSelector(void)
: mNameSpace(kNameSpaceID_Unknown), mTag(nsnull),
mIDList(nsnull),
mClassList(nsnull),
mPseudoClassList(nsnull),
mAttrList(nsnull),
mOperator(0),
mNegations(nsnull),
mNext(nsnull)
{
MOZ_COUNT_CTOR(nsCSSSelector);
}
nsCSSSelector::nsCSSSelector(const nsCSSSelector& aCopy)
: mNameSpace(aCopy.mNameSpace), mTag(aCopy.mTag),
mIDList(nsnull),
mClassList(nsnull),
mPseudoClassList(nsnull),
mAttrList(nsnull),
mOperator(aCopy.mOperator),
mNegations(nsnull),
mNext(nsnull)
{
MOZ_COUNT_CTOR(nsCSSSelector);
NS_IF_COPY(mIDList, aCopy.mIDList, nsAtomList);
NS_IF_COPY(mClassList, aCopy.mClassList, nsAtomList);
NS_IF_COPY(mPseudoClassList, aCopy.mPseudoClassList, nsAtomStringList);
NS_IF_COPY(mAttrList, aCopy.mAttrList, nsAttrSelector);
NS_IF_COPY(mNegations, aCopy.mNegations, nsCSSSelector);
}
nsCSSSelector::~nsCSSSelector(void)
{
MOZ_COUNT_DTOR(nsCSSSelector);
Reset();
}
nsCSSSelector& nsCSSSelector::operator=(const nsCSSSelector& aCopy)
{
NS_IF_DELETE(mIDList);
NS_IF_DELETE(mClassList);
NS_IF_DELETE(mPseudoClassList);
NS_IF_DELETE(mAttrList);
NS_IF_DELETE(mNegations);
mNameSpace = aCopy.mNameSpace;
mTag = aCopy.mTag;
NS_IF_COPY(mIDList, aCopy.mIDList, nsAtomList);
NS_IF_COPY(mClassList, aCopy.mClassList, nsAtomList);
NS_IF_COPY(mPseudoClassList, aCopy.mPseudoClassList, nsAtomStringList);
NS_IF_COPY(mAttrList, aCopy.mAttrList, nsAttrSelector);
mOperator = aCopy.mOperator;
NS_IF_COPY(mNegations, aCopy.mNegations, nsCSSSelector);
return *this;
}
PRBool nsCSSSelector::Equals(const nsCSSSelector* aOther) const
{
if (this == aOther) {
return PR_TRUE;
}
if (nsnull != aOther) {
if ((aOther->mNameSpace == mNameSpace) &&
(aOther->mTag == mTag) &&
(aOther->mOperator == mOperator)) {
if (nsnull != mIDList) {
if (PR_FALSE == mIDList->Equals(aOther->mIDList)) {
return PR_FALSE;
}
}
else {
if (nsnull != aOther->mIDList) {
return PR_FALSE;
}
}
if (nsnull != mClassList) {
if (PR_FALSE == mClassList->Equals(aOther->mClassList)) {
return PR_FALSE;
}
}
else {
if (nsnull != aOther->mClassList) {
return PR_FALSE;
}
}
if (nsnull != mPseudoClassList) {
if (PR_FALSE == mPseudoClassList->Equals(aOther->mPseudoClassList)) {
return PR_FALSE;
}
}
else {
if (nsnull != aOther->mPseudoClassList) {
return PR_FALSE;
}
}
if (nsnull != mAttrList) {
if (PR_FALSE == mAttrList->Equals(aOther->mAttrList)) {
return PR_FALSE;
}
}
else {
if (nsnull != aOther->mAttrList) {
return PR_FALSE;
}
}
if (nsnull != mNegations) {
if (PR_FALSE == mNegations->Equals(aOther->mNegations)) {
return PR_FALSE;
}
}
return PR_TRUE;
}
}
return PR_FALSE;
}
void nsCSSSelector::Reset(void)
{
mNameSpace = kNameSpaceID_Unknown;
mTag = nsnull;
NS_IF_DELETE(mIDList);
NS_IF_DELETE(mClassList);
NS_IF_DELETE(mPseudoClassList);
NS_IF_DELETE(mAttrList);
NS_IF_DELETE(mNegations);
mOperator = PRUnichar(0);
}
void nsCSSSelector::SetNameSpace(PRInt32 aNameSpace)
{
mNameSpace = aNameSpace;
}
void nsCSSSelector::SetTag(const nsString& aTag)
{
if (aTag.IsEmpty())
mTag = nsnull;
else
mTag = do_GetAtom(aTag);
}
void nsCSSSelector::AddID(const nsString& aID)
{
if (!aID.IsEmpty()) {
nsAtomList** list = &mIDList;
while (nsnull != *list) {
list = &((*list)->mNext);
}
*list = new nsAtomList(aID);
}
}
void nsCSSSelector::AddClass(const nsString& aClass)
{
if (!aClass.IsEmpty()) {
nsAtomList** list = &mClassList;
while (nsnull != *list) {
list = &((*list)->mNext);
}
*list = new nsAtomList(aClass);
}
}
void nsCSSSelector::AddPseudoClass(const nsString& aPseudoClass,
const PRUnichar* aString)
{
if (!aPseudoClass.IsEmpty()) {
nsAtomStringList** list = &mPseudoClassList;
while (nsnull != *list) {
list = &((*list)->mNext);
}
*list = new nsAtomStringList(aPseudoClass, aString);
}
}
void nsCSSSelector::AddPseudoClass(nsIAtom* aPseudoClass,
const PRUnichar* aString)
{
if (nsnull != aPseudoClass) {
nsAtomStringList** list = &mPseudoClassList;
while (nsnull != *list) {
list = &((*list)->mNext);
}
*list = new nsAtomStringList(aPseudoClass, aString);
}
}
void nsCSSSelector::AddAttribute(PRInt32 aNameSpace, const nsString& aAttr)
{
if (!aAttr.IsEmpty()) {
nsAttrSelector** list = &mAttrList;
while (nsnull != *list) {
list = &((*list)->mNext);
}
*list = new nsAttrSelector(aNameSpace, aAttr);
}
}
void nsCSSSelector::AddAttribute(PRInt32 aNameSpace, const nsString& aAttr, PRUint8 aFunc,
const nsString& aValue, PRBool aCaseSensitive)
{
if (!aAttr.IsEmpty()) {
nsAttrSelector** list = &mAttrList;
while (nsnull != *list) {
list = &((*list)->mNext);
}
*list = new nsAttrSelector(aNameSpace, aAttr, aFunc, aValue, aCaseSensitive);
}
}
void nsCSSSelector::SetOperator(PRUnichar aOperator)
{
mOperator = aOperator;
}
PRInt32 nsCSSSelector::CalcWeight(void) const
{
PRInt32 weight = 0;
if (nsnull != mTag) {
weight += 0x000001;
}
nsAtomList* list = mIDList;
while (nsnull != list) {
weight += 0x010000;
list = list->mNext;
}
list = mClassList;
while (nsnull != list) {
weight += 0x000100;
list = list->mNext;
}
nsAtomStringList *plist = mPseudoClassList;
while (nsnull != plist) {
weight += 0x000100;
plist = plist->mNext;
}
nsAttrSelector* attr = mAttrList;
while (nsnull != attr) {
weight += 0x000100;
attr = attr->mNext;
}
if (nsnull != mNegations) {
weight += mNegations->CalcWeight();
}
return weight;
}
// pseudo-elements are stored in the selectors' chain using fictional elements;
// these fictional elements have mTag starting with a colon
static PRBool IsPseudoElement(nsIAtom* aAtom)
{
if (aAtom) {
const char* str;
aAtom->GetUTF8String(&str);
return str && (*str == ':');
}
return PR_FALSE;
}
void nsCSSSelector::AppendNegationToString(nsAString& aString)
{
aString.Append(NS_LITERAL_STRING(":not("));
}
//
// Builds the textual representation of a selector. Called by DOM 2 CSS
// StyleRule:selectorText
//
nsresult nsCSSSelector::ToString( nsAString& aString, nsICSSStyleSheet* aSheet, PRBool aIsPseudoElem,
PRInt8 aNegatedIndex) const
{
nsAutoString temp;
PRBool aIsNegated = PRBool(0 < aNegatedIndex);
// selectors are linked from right-to-left, so the next selector in the linked list
// actually precedes this one in the resulting string
if (mNext) {
mNext->ToString(aString, aSheet, IsPseudoElement(mTag), PR_FALSE);
if (!aIsNegated && !IsPseudoElement(mTag)) {
// don't add a leading whitespace if we have a pseudo-element
// or a negated simple selector
aString.Append(PRUnichar(' '));
}
}
if (1 < aNegatedIndex) {
// the first mNegations does not contain a negated type element selector
// or a negated universal selector
NS_IF_NEGATED_START(aIsNegated, aString)
}
// append the namespace prefix
if (mNameSpace > 0) {
nsCOMPtr<nsINameSpace> sheetNS;
aSheet->GetNameSpace(*getter_AddRefs(sheetNS));
nsCOMPtr<nsIAtom> prefixAtom;
// will return null if namespace was the default
sheetNS->FindNameSpacePrefix(mNameSpace, *getter_AddRefs(prefixAtom));
if (prefixAtom) {
nsAutoString prefix;
prefixAtom->ToString(prefix);
aString.Append(prefix);
aString.Append(PRUnichar('|'));
}
}
// smells like a universal selector
if (!mTag && !mIDList && !mClassList) {
if (1 != aNegatedIndex) {
aString.Append(PRUnichar('*'));
}
if (1 < aNegatedIndex) {
NS_IF_NEGATED_END(aIsNegated, aString)
}
} else {
// Append the tag name, if there is one
if (mTag) {
nsAutoString prefix;
mTag->ToString(prefix);
aString.Append(prefix);
NS_IF_NEGATED_END(aIsNegated, aString)
}
// Append the id, if there is one
if (mIDList) {
nsAtomList* list = mIDList;
while (list != nsnull) {
list->mAtom->ToString(temp);
NS_IF_NEGATED_START(aIsNegated, aString)
aString.Append(PRUnichar('#'));
aString.Append(temp);
NS_IF_NEGATED_END(aIsNegated, aString)
list = list->mNext;
}
}
// Append each class in the linked list
if (mClassList) {
nsAtomList* list = mClassList;
while (list != nsnull) {
list->mAtom->ToString(temp);
NS_IF_NEGATED_START(aIsNegated, aString)
aString.Append(PRUnichar('.'));
aString.Append(temp);
NS_IF_NEGATED_END(aIsNegated, aString)
list = list->mNext;
}
}
}
// Append each attribute selector in the linked list
if (mAttrList) {
nsAttrSelector* list = mAttrList;
while (list != nsnull) {
NS_IF_NEGATED_START(aIsNegated, aString)
aString.Append(PRUnichar('['));
// Append the namespace prefix
if (list->mNameSpace > 0) {
nsCOMPtr<nsINameSpace> sheetNS;
aSheet->GetNameSpace(*getter_AddRefs(sheetNS));
nsCOMPtr<nsIAtom> prefixAtom;
// will return null if namespace was the default
sheetNS->FindNameSpacePrefix(list->mNameSpace, *getter_AddRefs(prefixAtom));
if (prefixAtom) {
nsAutoString prefix;
prefixAtom->ToString(prefix);
aString.Append(prefix);
aString.Append(PRUnichar('|'));
}
}
// Append the attribute name
list->mAttr->ToString(temp);
aString.Append(temp);
// Append the function
if (list->mFunction == NS_ATTR_FUNC_EQUALS) {
aString.Append(PRUnichar('='));
} else if (list->mFunction == NS_ATTR_FUNC_INCLUDES) {
aString.Append(PRUnichar('~'));
aString.Append(PRUnichar('='));
} else if (list->mFunction == NS_ATTR_FUNC_DASHMATCH) {
aString.Append(PRUnichar('|'));
aString.Append(PRUnichar('='));
} else if (list->mFunction == NS_ATTR_FUNC_BEGINSMATCH) {
aString.Append(PRUnichar('^'));
aString.Append(PRUnichar('='));
} else if (list->mFunction == NS_ATTR_FUNC_ENDSMATCH) {
aString.Append(PRUnichar('$'));
aString.Append(PRUnichar('='));
} else if (list->mFunction == NS_ATTR_FUNC_CONTAINSMATCH) {
aString.Append(PRUnichar('*'));
aString.Append(PRUnichar('='));
}
// Append the value
aString.Append(list->mValue);
aString.Append(PRUnichar(']'));
NS_IF_NEGATED_END(aIsNegated, aString)
list = list->mNext;
}
}
// Append each pseudo-class in the linked list
if (mPseudoClassList) {
nsAtomStringList* list = mPseudoClassList;
while (list != nsnull) {
list->mAtom->ToString(temp);
NS_IF_NEGATED_START(aIsNegated, aString)
aString.Append(temp);
if (nsnull != list->mString) {
aString.Append(PRUnichar('('));
aString.Append(list->mString);
aString.Append(PRUnichar(')'));
}
NS_IF_NEGATED_END(aIsNegated, aString)
list = list->mNext;
}
}
if (mNegations) {
// chain all the negated selectors
mNegations->ToString(aString, aSheet, PR_FALSE, aNegatedIndex + 1);
}
// Append the operator only if the selector is not negated and is not
// a pseudo-element
if (!aIsNegated && mOperator && !aIsPseudoElem) {
aString.Append(PRUnichar(' '));
aString.Append(mOperator);
}
return NS_OK;
}
// -- CSSImportantRule -------------------------------
class CSSStyleRuleImpl;
class CSSImportantRule : public nsIStyleRule {
public:
CSSImportantRule(nsICSSStyleSheet* aSheet, nsCSSDeclaration* aDeclaration);
NS_DECL_ISUPPORTS
NS_IMETHOD GetStyleSheet(nsIStyleSheet*& aSheet) const;
// The new mapping function.
NS_IMETHOD MapRuleInfoInto(nsRuleData* aRuleData);
#ifdef DEBUG
NS_IMETHOD List(FILE* out = stdout, PRInt32 aIndent = 0) const;
#endif
protected:
virtual ~CSSImportantRule(void);
nsCSSDeclaration* mDeclaration;
nsICSSStyleSheet* mSheet;
friend class CSSStyleRuleImpl;
};
CSSImportantRule::CSSImportantRule(nsICSSStyleSheet* aSheet, nsCSSDeclaration* aDeclaration)
: mDeclaration(aDeclaration),
mSheet(aSheet)
{
}
CSSImportantRule::~CSSImportantRule(void)
{
mDeclaration = nsnull;
}
NS_IMPL_ISUPPORTS1(CSSImportantRule, nsIStyleRule)
NS_IMETHODIMP
CSSImportantRule::GetStyleSheet(nsIStyleSheet*& aSheet) const
{
NS_IF_ADDREF(mSheet);
aSheet = mSheet;
return NS_OK;
}
NS_IMETHODIMP
CSSImportantRule::MapRuleInfoInto(nsRuleData* aRuleData)
{
return mDeclaration->MapImportantRuleInfoInto(aRuleData);
}
#ifdef DEBUG
NS_IMETHODIMP
CSSImportantRule::List(FILE* out, PRInt32 aIndent) const
{
// Indent
for (PRInt32 index = aIndent; --index >= 0; ) fputs(" ", out);
fputs("! Important rule ", out);
if (nsnull != mDeclaration) {
mDeclaration->List(out);
}
else {
fputs("{ null declaration }", out);
}
fputs("\n", out);
return NS_OK;
}
#endif
// -- nsDOMStyleRuleDeclaration -------------------------------
class DOMCSSDeclarationImpl : public nsDOMCSSDeclaration
{
public:
DOMCSSDeclarationImpl(nsICSSStyleRule *aRule);
~DOMCSSDeclarationImpl(void);
NS_IMETHOD RemoveProperty(const nsAString& aPropertyName,
nsAString& aReturn);
virtual void DropReference(void);
virtual nsresult GetCSSDeclaration(nsCSSDeclaration **aDecl,
PRBool aAllocate);
virtual nsresult GetCSSParsingEnvironment(nsICSSStyleRule* aRule,
nsICSSStyleSheet** aSheet,
nsIDocument** aDocument,
nsIURI** aURI,
nsICSSLoader** aCSSLoader,
nsICSSParser** aCSSParser);
virtual nsresult ParsePropertyValue(const nsAString& aPropName,
const nsAString& aPropValue);
virtual nsresult ParseDeclaration(const nsAString& aDecl,
PRBool aParseOnlyOneDecl,
PRBool aClearOldDecl);
virtual nsresult GetParent(nsISupports **aParent);
protected:
nsICSSStyleRule *mRule;
};
MOZ_DECL_CTOR_COUNTER(DOMCSSDeclarationImpl)
DOMCSSDeclarationImpl::DOMCSSDeclarationImpl(nsICSSStyleRule *aRule)
{
MOZ_COUNT_CTOR(DOMCSSDeclarationImpl);
// This reference is not reference-counted. The rule
// object tells us when its about to go away.
mRule = aRule;
}
DOMCSSDeclarationImpl::~DOMCSSDeclarationImpl(void)
{
MOZ_COUNT_DTOR(DOMCSSDeclarationImpl);
}
NS_IMETHODIMP
DOMCSSDeclarationImpl::RemoveProperty(const nsAString& aPropertyName,
nsAString& aReturn)
{
aReturn.Truncate();
nsCSSDeclaration* decl;
nsresult rv = GetCSSDeclaration(&decl, PR_TRUE);
if (NS_SUCCEEDED(rv) && decl) {
nsCOMPtr<nsICSSStyleSheet> cssSheet;
nsCOMPtr<nsIDocument> owningDoc;
if (mRule) {
nsCOMPtr<nsIStyleSheet> sheet;
mRule->GetStyleSheet(*getter_AddRefs(sheet));
cssSheet = do_QueryInterface(sheet);
if (sheet) {
sheet->GetOwningDocument(*getter_AddRefs(owningDoc));
}
}
if (owningDoc) {
owningDoc->BeginUpdate();
}
nsCSSProperty prop = nsCSSProps::LookupProperty(aPropertyName);
decl->GetValue(prop, aReturn);
rv = decl->RemoveProperty(prop);
if (NS_SUCCEEDED(rv)) {
if (cssSheet) {
cssSheet->SetModified(PR_TRUE);
}
if (owningDoc) {
owningDoc->StyleRuleChanged(cssSheet, mRule, nsCSSProps::kHintTable[prop]);
}
} else {
// If we tried to remove an invalid property or a property that wasn't
// set we simply return success and an empty string
rv = NS_OK;
}
if (owningDoc) {
owningDoc->EndUpdate();
}
}
return rv;
}
void
DOMCSSDeclarationImpl::DropReference(void)
{
mRule = nsnull;
}
nsresult
DOMCSSDeclarationImpl::GetCSSDeclaration(nsCSSDeclaration **aDecl,
PRBool aAllocate)
{
if (mRule) {
*aDecl = mRule->GetDeclaration();
}
else {
*aDecl = nsnull;
}
return NS_OK;
}
/*
* This is a utility function. It will only fail if it can't get a
* parser. This means it can return NS_OK without all of aSheet,
* aDocument, aURI, aCSSLoader being initialized
*/
nsresult
DOMCSSDeclarationImpl::GetCSSParsingEnvironment(nsICSSStyleRule* aRule,
nsICSSStyleSheet** aSheet,
nsIDocument** aDocument,
nsIURI** aURI,
nsICSSLoader** aCSSLoader,
nsICSSParser** aCSSParser)
{
// null out the out params since some of them may not get initialized below
*aSheet = nsnull;
*aDocument = nsnull;
*aURI = nsnull;
*aCSSLoader = nsnull;
*aCSSParser = nsnull;
nsresult result;
nsCOMPtr<nsIStyleSheet> sheet;
if (aRule) {
aRule->GetStyleSheet(*getter_AddRefs(sheet));
if (sheet) {
CallQueryInterface(sheet, aSheet);
sheet->GetOwningDocument(*aDocument);
sheet->GetURL(*aURI);
}
}
nsCOMPtr<nsIHTMLContentContainer> htmlContainer(do_QueryInterface(*aDocument));
if (htmlContainer) {
htmlContainer->GetCSSLoader(*aCSSLoader);
}
NS_ASSERTION(*aCSSLoader || !*aDocument, "Document with no CSS loader!");
if (*aCSSLoader) {
result = (*aCSSLoader)->GetParserFor(nsnull, aCSSParser);
} else {
result = NS_NewCSSParser(aCSSParser);
}
return result;
}
nsresult
DOMCSSDeclarationImpl::ParsePropertyValue(const nsAString& aPropName,
const nsAString& aPropValue)
{
nsCSSDeclaration* decl;
nsresult result = GetCSSDeclaration(&decl, PR_TRUE);
if (!decl) {
return result;
}
nsCOMPtr<nsICSSLoader> cssLoader;
nsCOMPtr<nsICSSParser> cssParser;
nsCOMPtr<nsIURI> baseURI;
nsCOMPtr<nsICSSStyleSheet> cssSheet;
nsCOMPtr<nsIDocument> owningDoc;
result = GetCSSParsingEnvironment(mRule,
getter_AddRefs(cssSheet),
getter_AddRefs(owningDoc),
getter_AddRefs(baseURI),
getter_AddRefs(cssLoader),
getter_AddRefs(cssParser));
if (NS_FAILED(result)) {
return result;
}
nsChangeHint hint;
if (owningDoc) {
owningDoc->BeginUpdate();
}
result = cssParser->ParseProperty(aPropName, aPropValue, baseURI, decl, &hint);
if (NS_SUCCEEDED(result)) {
if (cssSheet) {
cssSheet->SetModified(PR_TRUE);
}
if (owningDoc) {
owningDoc->StyleRuleChanged(cssSheet, mRule, hint);
owningDoc->EndUpdate();
}
}
if (cssLoader) {
cssLoader->RecycleParser(cssParser);
}
return result;
}
nsresult
DOMCSSDeclarationImpl::ParseDeclaration(const nsAString& aDecl,
PRBool aParseOnlyOneDecl,
PRBool aClearOldDecl)
{
nsCSSDeclaration* decl;
nsresult result = GetCSSDeclaration(&decl, PR_TRUE);
if (decl) {
nsCOMPtr<nsICSSLoader> cssLoader;
nsCOMPtr<nsICSSParser> cssParser;
nsCOMPtr<nsIURI> baseURI;
nsCOMPtr<nsICSSStyleSheet> cssSheet;
nsCOMPtr<nsIDocument> owningDoc;
result = GetCSSParsingEnvironment(mRule,
getter_AddRefs(cssSheet),
getter_AddRefs(owningDoc),
getter_AddRefs(baseURI),
getter_AddRefs(cssLoader),
getter_AddRefs(cssParser));
if (NS_SUCCEEDED(result)) {
nsChangeHint hint;
result = cssParser->ParseAndAppendDeclaration(aDecl, baseURI, decl,
aParseOnlyOneDecl, &hint,
aClearOldDecl);
if (NS_SUCCEEDED(result)) {
if (cssSheet) {
cssSheet->SetModified(PR_TRUE);
}
if (owningDoc) {
owningDoc->StyleRuleChanged(cssSheet, mRule, hint);
}
}
if (cssLoader) {
cssLoader->RecycleParser(cssParser);
}
}
}
return result;
}
nsresult
DOMCSSDeclarationImpl::GetParent(nsISupports **aParent)
{
NS_ENSURE_ARG_POINTER(aParent);
if (mRule) {
return CallQueryInterface(mRule, aParent);
}
*aParent = nsnull;
return NS_OK;
}
// -- nsCSSStyleRule -------------------------------
class CSSStyleRuleImpl : public nsCSSRule,
public nsICSSStyleRule,
public nsIDOMCSSStyleRule
{
public:
CSSStyleRuleImpl(const nsCSSSelector& aSelector);
CSSStyleRuleImpl(const CSSStyleRuleImpl& aCopy);
NS_DECL_ISUPPORTS_INHERITED
virtual nsCSSSelector* FirstSelector(void);
virtual void AddSelector(const nsCSSSelector& aSelector);
virtual void DeleteSelector(nsCSSSelector* aSelector);
virtual void SetSourceSelectorText(const nsString& aSelectorText);
virtual void GetSourceSelectorText(nsString& aSelectorText) const;
virtual PRUint32 GetLineNumber(void) const;
virtual void SetLineNumber(PRUint32 aLineNumber);
virtual nsCSSDeclaration* GetDeclaration(void) const;
virtual void SetDeclaration(nsCSSDeclaration* aDeclaration);
virtual PRInt32 GetWeight(void) const;
virtual void SetWeight(PRInt32 aWeight);
virtual already_AddRefed<nsIStyleRule> GetImportantRule(void);
// hook for inspector
virtual nsresult GetValue(nsCSSProperty aProperty, nsCSSValue& aValue);
NS_IMETHOD GetStyleSheet(nsIStyleSheet*& aSheet) const;
NS_IMETHOD SetStyleSheet(nsICSSStyleSheet* aSheet);
NS_IMETHOD SetParentRule(nsICSSGroupRule* aRule);
NS_IMETHOD GetType(PRInt32& aType) const;
NS_IMETHOD Clone(nsICSSRule*& aClone) const;
// The new mapping function.
NS_IMETHOD MapRuleInfoInto(nsRuleData* aRuleData);
#ifdef DEBUG
NS_IMETHOD List(FILE* out = stdout, PRInt32 aIndent = 0) const;
#endif
// nsIDOMCSSRule interface
NS_DECL_NSIDOMCSSRULE
// nsIDOMCSSStyleRule interface
NS_DECL_NSIDOMCSSSTYLERULE
private:
// These are not supported and are not implemented!
CSSStyleRuleImpl& operator=(const CSSStyleRuleImpl& aCopy);
protected:
virtual ~CSSStyleRuleImpl(void);
protected:
nsCSSSelector mSelector;
nsCSSDeclaration* mDeclaration;
PRInt32 mWeight;
CSSImportantRule* mImportantRule;
DOMCSSDeclarationImpl* mDOMDeclaration;
PRUint32 mLineNumber;
};
CSSStyleRuleImpl::CSSStyleRuleImpl(const nsCSSSelector& aSelector)
: nsCSSRule(),
mSelector(aSelector), mDeclaration(nsnull),
mWeight(0), mImportantRule(nsnull),
mDOMDeclaration(nsnull)
{
}
CSSStyleRuleImpl::CSSStyleRuleImpl(const CSSStyleRuleImpl& aCopy)
: nsCSSRule(aCopy),
mSelector(aCopy.mSelector),
mDeclaration(nsnull),
mWeight(aCopy.mWeight),
mImportantRule(nsnull),
mDOMDeclaration(nsnull)
{
nsCSSSelector* copySel = aCopy.mSelector.mNext;
nsCSSSelector* ourSel = &mSelector;
while (copySel && ourSel) {
ourSel->mNext = new nsCSSSelector(*copySel);
ourSel = ourSel->mNext;
copySel = copySel->mNext;
}
if (aCopy.mDeclaration) {
mDeclaration = aCopy.mDeclaration->Clone();
if (nsnull != mDeclaration) {
mDeclaration->AddRef();
}
}
// rest is constructed lazily on existing data
}
CSSStyleRuleImpl::~CSSStyleRuleImpl(void)
{
nsCSSSelector* next = mSelector.mNext;
while (nsnull != next) {
nsCSSSelector* selector = next;
next = selector->mNext;
delete selector;
}
if (nsnull != mDeclaration) {
mDeclaration->Release();
mDeclaration = nsnull;
}
if (nsnull != mImportantRule) {
mImportantRule->mSheet = nsnull;
NS_RELEASE(mImportantRule);
mImportantRule = nsnull;
}
if (nsnull != mDOMDeclaration) {
mDOMDeclaration->DropReference();
}
}
// QueryInterface implementation for CSSStyleRuleImpl
NS_INTERFACE_MAP_BEGIN(CSSStyleRuleImpl)
NS_INTERFACE_MAP_ENTRY(nsICSSStyleRule)
NS_INTERFACE_MAP_ENTRY(nsICSSRule)
NS_INTERFACE_MAP_ENTRY(nsIStyleRule)
NS_INTERFACE_MAP_ENTRY(nsIDOMCSSRule)
NS_INTERFACE_MAP_ENTRY(nsIDOMCSSStyleRule)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsICSSStyleRule)
NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(CSSStyleRule)
NS_INTERFACE_MAP_END
NS_IMPL_ADDREF_INHERITED(CSSStyleRuleImpl, nsCSSRule);
NS_IMPL_RELEASE_INHERITED(CSSStyleRuleImpl, nsCSSRule);
nsCSSSelector* CSSStyleRuleImpl::FirstSelector(void)
{
return &mSelector;
}
void CSSStyleRuleImpl::AddSelector(const nsCSSSelector& aSelector)
{
nsCSSSelector* selector = new nsCSSSelector(aSelector);
nsCSSSelector* last = &mSelector;
while (nsnull != last->mNext) {
last = last->mNext;
}
last->mNext = selector;
}
void CSSStyleRuleImpl::DeleteSelector(nsCSSSelector* aSelector)
{
if (nsnull != aSelector) {
if (&mSelector == aSelector) { // handle first selector
if (nsnull != mSelector.mNext) {
nsCSSSelector* nextOne = mSelector.mNext;
mSelector = *nextOne; // assign values
mSelector.mNext = nextOne->mNext;
delete nextOne;
}
else {
mSelector.Reset();
}
}
else {
nsCSSSelector* selector = &mSelector;
while (nsnull != selector->mNext) {
if (aSelector == selector->mNext) {
selector->mNext = aSelector->mNext;
delete aSelector;
return;
}
selector = selector->mNext;
}
}
}
}
void CSSStyleRuleImpl::SetSourceSelectorText(const nsString& aSelectorText)
{
/* no need for set, since get recreates the string */
}
void CSSStyleRuleImpl::GetSourceSelectorText(nsString& aSelectorText) const
{
mSelector.ToString( aSelectorText, mSheet, IsPseudoElement(mSelector.mTag),
0 );
}
PRUint32 CSSStyleRuleImpl::GetLineNumber(void) const
{
return mLineNumber;
}
void CSSStyleRuleImpl::SetLineNumber(PRUint32 aLineNumber)
{
mLineNumber = aLineNumber;
}
nsCSSDeclaration* CSSStyleRuleImpl::GetDeclaration(void) const
{
nsCSSDeclaration* result = mDeclaration;
return result;
}
void CSSStyleRuleImpl::SetDeclaration(nsCSSDeclaration* aDeclaration)
{
if (mDeclaration != aDeclaration) {
NS_IF_RELEASE(mImportantRule);
if (nsnull != mDeclaration) {
mDeclaration->Release();
}
mDeclaration = aDeclaration;
mDeclaration->AddRef();
}
}
PRInt32 CSSStyleRuleImpl::GetWeight(void) const
{
return mWeight;
}
void CSSStyleRuleImpl::SetWeight(PRInt32 aWeight)
{
mWeight = aWeight;
}
already_AddRefed<nsIStyleRule> CSSStyleRuleImpl::GetImportantRule(void)
{
if (!mImportantRule && mDeclaration) {
if (mDeclaration->HasImportantData()) {
mImportantRule = new CSSImportantRule(mSheet, mDeclaration);
NS_ADDREF(mImportantRule);
}
}
NS_IF_ADDREF(mImportantRule);
return mImportantRule;
}
nsresult
CSSStyleRuleImpl::GetValue(nsCSSProperty aProperty, nsCSSValue& aValue)
{
return mDeclaration->GetValueOrImportantValue(aProperty, aValue);
}
NS_IMETHODIMP
CSSStyleRuleImpl::GetStyleSheet(nsIStyleSheet*& aSheet) const
{
return nsCSSRule::GetStyleSheet(aSheet);
}
NS_IMETHODIMP
CSSStyleRuleImpl::SetStyleSheet(nsICSSStyleSheet* aSheet)
{
nsCSSRule::SetStyleSheet(aSheet);
if (nsnull != mImportantRule) { // we're responsible for this guy too
mImportantRule->mSheet = aSheet;
}
return NS_OK;
}
NS_IMETHODIMP
CSSStyleRuleImpl::SetParentRule(nsICSSGroupRule* aRule)
{
return nsCSSRule::SetParentRule(aRule);
}
NS_IMETHODIMP
CSSStyleRuleImpl::GetType(PRInt32& aType) const
{
aType = nsICSSRule::STYLE_RULE;
return NS_OK;
}
NS_IMETHODIMP
CSSStyleRuleImpl::Clone(nsICSSRule*& aClone) const
{
CSSStyleRuleImpl* clone = new CSSStyleRuleImpl(*this);
if (clone) {
return CallQueryInterface(clone, &aClone);
}
aClone = nsnull;
return NS_ERROR_OUT_OF_MEMORY;
}
NS_IMETHODIMP
CSSStyleRuleImpl::MapRuleInfoInto(nsRuleData* aRuleData)
{
return mDeclaration->MapRuleInfoInto(aRuleData);
}
#ifdef DEBUG
NS_IMETHODIMP
CSSStyleRuleImpl::List(FILE* out, PRInt32 aIndent) const
{
// Indent
for (PRInt32 index = aIndent; --index >= 0; ) fputs(" ", out);
nsAutoString buffer;
mSelector.ToString(buffer, mSheet, PR_FALSE, 0);
buffer.Append(NS_LITERAL_STRING(" weight: "));
buffer.AppendInt(mWeight, 10);
buffer.Append(NS_LITERAL_STRING(" "));
fputs(NS_LossyConvertUCS2toASCII(buffer).get(), out);
if (nsnull != mDeclaration) {
mDeclaration->List(out);
}
else {
fputs("{ null declaration }", out);
}
fputs("\n", out);
return NS_OK;
}
#endif
NS_IMETHODIMP
CSSStyleRuleImpl::GetType(PRUint16* aType)
{
*aType = nsIDOMCSSRule::STYLE_RULE;
return NS_OK;
}
NS_IMETHODIMP
CSSStyleRuleImpl::GetCssText(nsAString& aCssText)
{
mSelector.ToString( aCssText, mSheet, IsPseudoElement(mSelector.mTag),
0 );
aCssText.Append(PRUnichar(' '));
aCssText.Append(PRUnichar('{'));
aCssText.Append(PRUnichar(' '));
if (mDeclaration)
{
nsAutoString tempString;
mDeclaration->ToString( tempString );
aCssText.Append( tempString );
}
aCssText.Append(PRUnichar(' '));
aCssText.Append(PRUnichar('}'));
return NS_OK;
}
NS_IMETHODIMP
CSSStyleRuleImpl::SetCssText(const nsAString& aCssText)
{
// XXX TBI - need to re-parse rule & declaration
return NS_OK;
}
NS_IMETHODIMP
CSSStyleRuleImpl::GetParentStyleSheet(nsIDOMCSSStyleSheet** aSheet)
{
if (mSheet) {
return CallQueryInterface(mSheet, aSheet);
}
*aSheet = nsnull;
return NS_OK;
}
NS_IMETHODIMP
CSSStyleRuleImpl::GetParentRule(nsIDOMCSSRule** aParentRule)
{
if (mParentRule) {
return CallQueryInterface(mParentRule, aParentRule);
}
*aParentRule = nsnull;
return NS_OK;
}
NS_IMETHODIMP
CSSStyleRuleImpl::GetSelectorText(nsAString& aSelectorText)
{
mSelector.ToString( aSelectorText, mSheet, IsPseudoElement(mSelector.mTag), 0 );
return NS_OK;
}
NS_IMETHODIMP
CSSStyleRuleImpl::SetSelectorText(const nsAString& aSelectorText)
{
// XXX TBI - get a parser and re-parse the selectors,
// XXX then need to re-compute the cascade
// XXX and dirty sheet
return NS_OK;
}
NS_IMETHODIMP
CSSStyleRuleImpl::GetStyle(nsIDOMCSSStyleDeclaration** aStyle)
{
if (nsnull == mDOMDeclaration) {
mDOMDeclaration = new DOMCSSDeclarationImpl(this);
if (nsnull == mDOMDeclaration) {
return NS_ERROR_OUT_OF_MEMORY;
}
NS_ADDREF(mDOMDeclaration);
}
*aStyle = mDOMDeclaration;
NS_ADDREF(mDOMDeclaration);
return NS_OK;
}
nsresult
NS_NewCSSStyleRule(nsICSSStyleRule** aInstancePtrResult,
const nsCSSSelector& aSelector)
{
if (aInstancePtrResult == nsnull) {
return NS_ERROR_NULL_POINTER;
}
CSSStyleRuleImpl *it = new CSSStyleRuleImpl(aSelector);
if (!it) {
return NS_ERROR_OUT_OF_MEMORY;
}
return CallQueryInterface(it, aInstancePtrResult);
}
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