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gecko-dev/layout/style/nsCSSParser.cpp
kostello%netscape.com e7dee8f2f4 1) Move the CSS dependent methods out of nsDocument and placed them 
in a new class nsMarkupDocument. The point of nsMarkupDocument is
to hold methods which are common to HTML and XML but not relevant
to the base nsDocument class.

2) Added Selection support methods for Rod.

3) Added LookupProperty to nsCSSProperty:
Given a property ID and Property Index returns back the string representation
of the property. This was need to convert CSSValues back to strings for saving.
TODO: Make sure that our URL Information stored in a CSSDeclaration contains
enough information to return it to it's original form on output.
1998-07-17 23:00:54 +00:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsICSSParser.h"
#include "nsCSSProps.h"
#include "nsCSSKeywords.h"
#include "nsCSSScanner.h"
#include "nsICSSStyleRule.h"
#include "nsIUnicharInputStream.h"
#include "nsIStyleSet.h"
#include "nsICSSStyleSheet.h"
#include "nsICSSDeclaration.h"
#include "nsStyleConsts.h"
#include "nsIURL.h"
#include "nsString.h"
#include "nsIAtom.h"
#include "nsVoidArray.h"
#include "nsColor.h"
#include "nsStyleConsts.h"
// XXX TODO:
// - rework aErrorCode stuff: switch over to nsresult
// - bug: "color: red {fish};" emits a property for color instead of zapping it
static NS_DEFINE_IID(kICSSParserIID, NS_ICSS_PARSER_IID);
static NS_DEFINE_IID(kICSSStyleSheetIID, NS_ICSS_STYLE_SHEET_IID);
static NS_DEFINE_IID(kIStyleSheetIID, NS_ISTYLE_SHEET_IID);
// XXX cell-padding, spacing, etc.???
struct Selector {
nsString mTag; // weight 1
nsString mID; // weight 100
nsString mClass; // weight 10
nsString mPseudoClass; // weight 10 (== class)
nsString mPseudoElement; // weight 10 (== class) ??
PRUint32 mMask; // which fields have values
Selector();
~Selector();
PRInt32 Weight() const;
#ifdef NS_DEBUG
void Dump() const;
#endif
};
#define SELECTOR_TAG 0x01
#define SELECTOR_ID 0x02
#define SELECTOR_CLASS 0x04
#define SELECTOR_PSEUDO_CLASS 0x08
#define SELECTOR_PSEUDO_ELEMENT 0x10
#define SELECTOR_WEIGHT_BASE 10
Selector::Selector()
{
mMask = 0;
}
Selector::~Selector()
{
}
PRInt32 Selector::Weight() const
{
return (((0 != (SELECTOR_TAG & mMask)) ? 1 : 0) +
((0 != (SELECTOR_ID & mMask)) ? (SELECTOR_WEIGHT_BASE * SELECTOR_WEIGHT_BASE) : 0) +
((0 != ((SELECTOR_CLASS | SELECTOR_PSEUDO_CLASS | SELECTOR_PSEUDO_ELEMENT) & mMask)) ? SELECTOR_WEIGHT_BASE : 0));
}
#ifdef NS_DEBUG
void Selector::Dump() const
{
PRBool needSpace = PR_FALSE;
if (mTag.Length() > 0) {
fputs(mTag, stdout);
needSpace = PR_TRUE;
}
if (mID.Length() > 0) {
if (needSpace) fputs(" ", stdout);
fputs("#", stdout);
fputs(mID, stdout);
needSpace = PR_TRUE;
}
if (mClass.Length() > 0) {
if (needSpace) fputs(" ", stdout);
fputs(".", stdout);
fputs(mClass, stdout);
needSpace = PR_TRUE;
}
if (mPseudoClass.Length() > 0) {
if (needSpace) fputs(" ", stdout);
fputs(":", stdout);
fputs(mPseudoClass, stdout);
needSpace = PR_TRUE;
}
if (mPseudoElement.Length() > 0) {
if (needSpace) fputs(" ", stdout);
fputs(":", stdout);
fputs(mPseudoElement, stdout);
needSpace = PR_TRUE;
}
}
#endif
// e.g. "P B, H1 B { ... }" has a selector list with two elements,
// each of which has two selectors.
struct SelectorList {
SelectorList* mNext;
nsVoidArray mSelectors;
SelectorList();
void Destroy();
void AddSelector(Selector* aSelector) {
mSelectors.AppendElement(aSelector);
}
#ifdef NS_DEBUG
void Dump();
#endif
private:
~SelectorList();
};
SelectorList::SelectorList()
{
mNext = nsnull;
}
SelectorList::~SelectorList()
{
PRInt32 n = mSelectors.Count();
for (PRInt32 i = 0; i < n; i++) {
Selector* sel = (Selector*) mSelectors.ElementAt(i);
delete sel;
}
}
void SelectorList::Destroy()
{
SelectorList* list = this;
while (nsnull != list) {
SelectorList* next = list->mNext;
delete list;
list = next;
}
}
#ifdef NS_DEBUG
void SelectorList::Dump()
{
PRInt32 n = mSelectors.Count();
for (PRInt32 i = 0; i < n; i++) {
Selector* sel = (Selector*) mSelectors.ElementAt(i);
sel->Dump();
fputs(" ", stdout);
}
if (mNext) {
fputs(", ", stdout);
mNext->Dump();
}
}
#endif
//----------------------------------------------------------------------
// Your basic top-down recursive descent style parser
class CSSParserImpl : public nsICSSParser {
public:
CSSParserImpl();
CSSParserImpl(nsICSSStyleSheet* aSheet);
~CSSParserImpl();
NS_DECL_ISUPPORTS
NS_IMETHOD GetInfoMask(PRUint32& aResult);
NS_IMETHOD SetStyleSheet(nsIStyleSheet* aSheet);
NS_IMETHOD Parse(nsIUnicharInputStream* aInput,
nsIURL* aInputURL,
nsIStyleSheet*& aResult);
NS_IMETHOD ParseDeclarations(const nsString& aDeclaration,
nsIURL* aBaseURL,
nsIStyleRule*& aResult);
protected:
PRBool GetToken(PRInt32* aErrorCode, PRBool aSkipWS);
void UngetToken();
PRBool ExpectSymbol(PRInt32* aErrorCode, char aSymbol, PRBool aSkipWS);
nsString* NextIdent(PRInt32* aErrorCode);
void SkipUntil(PRInt32* aErrorCode, PRUnichar aStopSymbol);
void SkipRuleSet(PRInt32* aErrorCode);
PRBool SkipDeclaration(PRInt32* aErrorCode, PRBool aCheckForBraces);
PRBool ParseRuleSet(PRInt32* aErrorCode);
PRBool ParseAtRule(PRInt32* aErrorCode);
PRBool ParseImportRule(PRInt32* aErrorCode);
PRBool ParseSelectorGroup(PRInt32* aErrorCode, SelectorList* aListHead);
PRBool ParseSelectorList(PRInt32* aErrorCode, SelectorList* aListHead);
PRBool ParseSelector(PRInt32* aErrorCode, Selector* aSelectorResult);
nsICSSDeclaration* ParseDeclarationBlock(PRInt32* aErrorCode,
PRBool aCheckForBraces);
PRBool ParseDeclaration(PRInt32* aErrorCode,
nsICSSDeclaration* aDeclaration,
PRBool aCheckForBraces);
PRBool ParseProperty(PRInt32* aErrorCode, const char* aName,
nsICSSDeclaration* aDeclaration);
PRBool ParseProperty(PRInt32* aErrorCode, const char* aName,
nsICSSDeclaration* aDeclaration, PRInt32 aID);
// Property specific parsing routines
PRBool ParseBackground(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseBackgroundFilter(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aName);
PRBool ParseForegroundFilter(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aName);
PRBool ParseBackgroundPosition(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aName);
PRBool ParseBorder(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseBorderColor(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseBorderSide(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aNames[], PRInt32 aWhichSide);
PRBool ParseBorderStyle(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseBorderWidth(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseClip(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseFont(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aName);
PRBool ParseFontFamily(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aName);
PRBool ParseFontWeight(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aName);
PRBool ParseListStyle(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseMargin(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParsePadding(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration);
PRBool ParseTextDecoration(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aName);
// Reused utility parsing routines
PRBool ParseBoxProperties(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aNames[]);
PRInt32 ParseChoice(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aNames[], PRInt32 aNumNames);
PRBool ParseColor(PRInt32* aErrorCode, nscolor* aColorResult);
PRBool ParseColorComponent(PRInt32* aErrorCode, PRUint8* aComponent,
char aStop);
PRBool ParseEnum(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aName, PRInt32* aTable);
PRInt32 SearchKeywordTable(PRInt32 aID, PRInt32 aTable[]);
PRBool ParseVariant(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aName, PRInt32 aVariant,
PRInt32* aTable);
PRBool TranslateLength(nsICSSDeclaration* aDeclaration, const char* aName,
float aNumber, const nsString& aDimension);
void ProcessImport(const nsString& aURLSpec);
// Current token. The value is valid after calling GetToken
nsCSSToken mToken;
// After an UngetToken is done this flag is true. The next call to
// GetToken clears the flag.
PRBool mHavePushBack;
nsCSSScanner* mScanner;
nsIURL* mURL;
nsICSSStyleSheet* mSheet;
PRBool mInHead;
};
NS_HTML nsresult
NS_NewCSSParser(nsICSSParser** aInstancePtrResult)
{
CSSParserImpl *it = new CSSParserImpl();
if (it == nsnull) {
return NS_ERROR_OUT_OF_MEMORY;
}
return it->QueryInterface(kICSSParserIID, (void **) aInstancePtrResult);
}
CSSParserImpl::CSSParserImpl()
{
NS_INIT_REFCNT();
mScanner = nsnull;
mSheet = nsnull;
mHavePushBack = PR_FALSE;
}
CSSParserImpl::CSSParserImpl(nsICSSStyleSheet* aSheet)
{
NS_INIT_REFCNT();
mScanner = nsnull;
mSheet = aSheet; aSheet->AddRef();
mHavePushBack = PR_FALSE;
}
NS_IMPL_ISUPPORTS(CSSParserImpl,kICSSParserIID)
CSSParserImpl::~CSSParserImpl()
{
NS_IF_RELEASE(mSheet);
}
NS_METHOD
CSSParserImpl::GetInfoMask(PRUint32& aResult)
{
aResult = NS_CSS_GETINFO_CSS1 | NS_CSS_GETINFO_CSSP;
return NS_OK;
}
NS_METHOD
CSSParserImpl::SetStyleSheet(nsIStyleSheet* aSheet)
{
NS_PRECONDITION(nsnull != aSheet, "null ptr");
if (nsnull == aSheet) {
return NS_ERROR_NULL_POINTER;
}
// Make sure the sheet supports the correct interface!
static NS_DEFINE_IID(kICSSStyleSheetIID, NS_ICSS_STYLE_SHEET_IID);
nsICSSStyleSheet* cssSheet;
nsresult rv = aSheet->QueryInterface(kICSSStyleSheetIID, (void**)&cssSheet);
if (NS_OK != rv) {
return rv;
}
// Switch to using the new sheet
NS_IF_RELEASE(mSheet);
mSheet = cssSheet;
return NS_OK;
}
NS_METHOD
CSSParserImpl::Parse(nsIUnicharInputStream* aInput,
nsIURL* aInputURL,
nsIStyleSheet*& aResult)
{
if (nsnull == mSheet) {
NS_NewCSSStyleSheet(&mSheet, aInputURL);
}
PRInt32 errorCode = NS_OK;
mScanner = new nsCSSScanner();
mScanner->Init(aInput);
mURL = aInputURL;
if (nsnull != aInputURL) {
aInputURL->AddRef();
}
mInHead = PR_TRUE;
nsCSSToken* tk = &mToken;
for (;;) {
// Get next non-whitespace token
if (!GetToken(&errorCode, PR_TRUE)) {
break;
}
if (eCSSToken_AtKeyword == tk->mType) {
ParseAtRule(&errorCode);
continue;
} else if (eCSSToken_Symbol == tk->mType) {
// Discard dangling semicolons. This is not part of the CSS1
// forward compatible parsing spec, but it makes alot of sense.
if (';' == tk->mSymbol) {
continue;
}
}
mInHead = PR_FALSE;
UngetToken();
ParseRuleSet(&errorCode);
}
delete mScanner;
mScanner = nsnull;
NS_IF_RELEASE(mURL);
nsIStyleSheet* sheet = nsnull;
mSheet->QueryInterface(kIStyleSheetIID, (void**)&sheet);
aResult = sheet;
return NS_OK;
}
NS_METHOD
CSSParserImpl::ParseDeclarations(const nsString& aDeclaration,
nsIURL* aBaseURL,
nsIStyleRule*& aResult)
{
nsString* str = new nsString(aDeclaration);
if (nsnull == str) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsIUnicharInputStream* input = nsnull;
nsresult rv = NS_NewStringUnicharInputStream(&input, str);
if (NS_OK != rv) {
return rv;
}
mScanner = new nsCSSScanner();
mScanner->Init(input);
NS_RELEASE(input);
mURL = aBaseURL;
NS_IF_ADDREF(mURL);
mInHead = PR_FALSE;
PRInt32 errorCode = NS_OK;
nsICSSDeclaration* declaration = ParseDeclarationBlock(&errorCode, PR_FALSE);
if (nsnull != declaration) {
// Create a style rule for the delcaration
nsICSSStyleRule* rule = nsnull;
NS_NewCSSStyleRule(&rule, nsCSSSelector());
rule->SetDeclaration(declaration);
rule->SetWeight(0x7fffffff);
aResult = rule;
}
else {
aResult = nsnull;
}
delete mScanner;
mScanner = nsnull;
NS_IF_RELEASE(mURL);
return NS_OK;
}
//----------------------------------------------------------------------
PRBool CSSParserImpl::GetToken(PRInt32* aErrorCode, PRBool aSkipWS)
{
for (;;) {
if (!mHavePushBack) {
if (!mScanner->Next(aErrorCode, &mToken)) {
break;
}
}
mHavePushBack = PR_FALSE;
if (aSkipWS && (eCSSToken_WhiteSpace == mToken.mType)) {
continue;
}
return PR_TRUE;
}
return PR_FALSE;
}
void CSSParserImpl::UngetToken()
{
NS_PRECONDITION(mHavePushBack == PR_FALSE, "double pushback");
mHavePushBack = PR_TRUE;
}
PRBool CSSParserImpl::ExpectSymbol(PRInt32* aErrorCode,
char aSymbol,
PRBool aSkipWS)
{
if (!GetToken(aErrorCode, aSkipWS)) {
return PR_FALSE;
}
nsCSSToken* tk = &mToken;
if ((eCSSToken_Symbol == tk->mType) && (aSymbol == tk->mSymbol)) {
return PR_TRUE;
}
UngetToken();
return PR_FALSE;
}
nsString* CSSParserImpl::NextIdent(PRInt32* aErrorCode)
{
if (!GetToken(aErrorCode, PR_TRUE)) {
return nsnull;
}
if (eCSSToken_Ident != mToken.mType) {
UngetToken();
return nsnull;
}
return &mToken.mIdent;
}
// XXX @media type {, types } '{' rules '}'
// XXX @font-face
// XXX @page { :left | :right } '{' declarations '}'
PRBool CSSParserImpl::ParseAtRule(PRInt32* aErrorCode)
{
nsCSSToken* tk = &mToken;
if (mInHead && tk->mIdent.EqualsIgnoreCase("import")) {
ParseImportRule(aErrorCode);
return PR_TRUE;
}
// Skip over unsupported at rule
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
if (eCSSToken_Symbol == tk->mType) {
PRUnichar symbol = tk->mSymbol;
if (symbol == ';') {
break;
}
if (symbol == '{') {
SkipUntil(aErrorCode, '}');
break;
} else if (symbol == '(') {
SkipUntil(aErrorCode, ')');
} else if (symbol == '[') {
SkipUntil(aErrorCode, ']');
}
}
}
mInHead = PR_FALSE;
return PR_TRUE;
}
// Parse a CSS1 import rule: "@import STRING | URL"
PRBool CSSParserImpl::ParseImportRule(PRInt32* aErrorCode)
{
nsCSSToken* tk = &mToken;
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
if ((eCSSToken_String == tk->mType) || (eCSSToken_URL == tk->mType)) {
if (ExpectSymbol(aErrorCode, ';', PR_TRUE)) {
ProcessImport(tk->mIdent);
return PR_TRUE;
}
if ((eCSSToken_Symbol != tk->mType) || (';' != tk->mSymbol)) {
SkipUntil(aErrorCode, ';');
}
}
mInHead = PR_FALSE;
return PR_TRUE;
}
void CSSParserImpl::ProcessImport(const nsString& aURLSpec)
{
// XXX probably need a way to encode unicode junk for the part of
// the url that follows a "?"
char* cp = aURLSpec.ToNewCString();
nsIURL* url;
nsresult rv = NS_NewURL(&url, mURL, cp);
delete cp;
if (NS_OK != rv) {
// import url is bad
// XXX log this somewhere for easier web page debugging
return;
}
if (PR_FALSE == mSheet->ContainsStyleSheet(url)) { // don't allow circular references
PRInt32 ec;
nsIInputStream* in = url->Open(&ec);
if (nsnull == in) {
// failure to make connection
// XXX log this somewhere for easier web page debugging
}
else {
nsIUnicharInputStream* uin;
rv = NS_NewConverterStream(&uin, nsnull, in);
if (NS_OK != rv) {
// XXX no iso-latin-1 converter? out of memory?
NS_RELEASE(in);
}
else {
NS_RELEASE(in);
// Create a new parse to parse the import.
if (NS_OK == rv) {
nsICSSParser* parser;
rv = NS_NewCSSParser(&parser);
if (NS_OK == rv) {
nsIStyleSheet* childSheet = nsnull;
rv = parser->Parse(uin, url, childSheet);
NS_RELEASE(parser);
if ((NS_OK == rv) && (nsnull != childSheet)) {
nsICSSStyleSheet* cssChild = nsnull;
if (NS_OK == childSheet->QueryInterface(kICSSStyleSheetIID, (void**)&cssChild)) {
mSheet->AppendStyleSheet(cssChild);
NS_RELEASE(cssChild);
}
}
NS_IF_RELEASE(childSheet);
}
}
NS_RELEASE(uin);
}
}
}
NS_RELEASE(url);
}
void CSSParserImpl::SkipUntil(PRInt32* aErrorCode, PRUnichar aStopSymbol)
{
nsCSSToken* tk = &mToken;
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
break;
}
if (eCSSToken_Symbol == tk->mType) {
PRUnichar symbol = tk->mSymbol;
if (symbol == aStopSymbol) {
break;
} else if ('{' == symbol) {
SkipUntil(aErrorCode, '}');
} else if ('[' == symbol) {
SkipUntil(aErrorCode, ']');
} else if ('(' == symbol) {
SkipUntil(aErrorCode, ')');
}
}
}
}
PRBool
CSSParserImpl::SkipDeclaration(PRInt32* aErrorCode, PRBool aCheckForBraces)
{
nsCSSToken* tk = &mToken;
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
if (eCSSToken_Symbol == tk->mType) {
PRUnichar symbol = tk->mSymbol;
if (';' == symbol) {
break;
}
if (aCheckForBraces) {
if ('}' == symbol) {
UngetToken();
break;
}
}
if ('{' == symbol) {
SkipUntil(aErrorCode, '}');
} else if ('(' == symbol) {
SkipUntil(aErrorCode, ')');
} else if ('[' == symbol) {
SkipUntil(aErrorCode, ']');
}
}
}
return PR_TRUE;
}
void CSSParserImpl::SkipRuleSet(PRInt32* aErrorCode)
{
nsCSSToken* tk = &mToken;
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
break;
}
if (eCSSToken_Symbol == tk->mType) {
PRUnichar symbol = tk->mSymbol;
if ('{' == symbol) {
SkipUntil(aErrorCode, '}');
break;
}
if ('(' == symbol) {
SkipUntil(aErrorCode, ')');
} else if ('[' == symbol) {
SkipUntil(aErrorCode, ']');
}
}
}
}
PRBool CSSParserImpl::ParseRuleSet(PRInt32* aErrorCode)
{
nsCSSToken* tk = &mToken;
// First get the list of selectors for the rule
SelectorList *slist = new SelectorList();
if (!ParseSelectorList(aErrorCode, slist)) {
SkipRuleSet(aErrorCode);
slist->Destroy();
return PR_FALSE;
}
// Next parse the declaration block
nsICSSDeclaration* declaration = ParseDeclarationBlock(aErrorCode, PR_TRUE);
if (nsnull == declaration) {
// XXX skip something here
slist->Destroy();
return PR_FALSE;
}
#if 0
slist->Dump();
fputs("{\n", stdout);
declaration->List();
fputs("}\n", stdout);
#endif
// Translate the selector list and declaration block into style data
SelectorList* list = slist;
nsCSSSelector selector;
nsICSSStyleRule* rule = nsnull;
while (nsnull != list) {
PRInt32 selIndex = list->mSelectors.Count();
Selector* sel = (Selector*)list->mSelectors[--selIndex];
if (0 < sel->mPseudoElement.Length()) { // only pseudo elements at end selector
nsString nullStr;
selector.Set(sel->mPseudoElement, nullStr, nullStr, nullStr);
NS_NewCSSStyleRule(&rule, selector);
}
selector.Set(sel->mTag, sel->mID, sel->mClass, sel->mPseudoClass);
PRInt32 weight = sel->Weight();
if (nsnull == rule) {
NS_NewCSSStyleRule(&rule, selector);
}
else {
rule->AddSelector(selector);
}
if (nsnull != rule) {
while (--selIndex >= 0) {
Selector* sel = (Selector*)list->mSelectors[selIndex];
selector.Set(sel->mTag, sel->mID, sel->mClass, sel->mPseudoClass);
rule->AddSelector(selector);
weight += sel->Weight();
}
rule->SetDeclaration(declaration);
rule->SetWeight(weight);
// rule->List();
mSheet->AppendStyleRule(rule);
NS_RELEASE(rule);
}
list = list->mNext;
}
// Release temporary storage
slist->Destroy();
NS_RELEASE(declaration);
return PR_TRUE;
}
PRBool CSSParserImpl::ParseSelectorList(PRInt32* aErrorCode,
SelectorList* aListHead)
{
if (!ParseSelectorGroup(aErrorCode, aListHead)) {
// must have at least one selector group
return PR_FALSE;
}
// After that there must either be a "," or a "{"
nsCSSToken* tk = &mToken;
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
if (eCSSToken_Symbol != tk->mType) {
UngetToken();
return PR_FALSE;
}
if (',' == tk->mSymbol) {
// Another selector group must follow
SelectorList* newList = new SelectorList();
if (!ParseSelectorGroup(aErrorCode, newList)) {
newList->Destroy();
return PR_FALSE;
}
// add new list to the end of the selector list
aListHead->mNext = newList;
aListHead = newList;
continue;
} else if ('{' == tk->mSymbol) {
UngetToken();
break;
} else {
UngetToken();
return PR_FALSE;
}
}
return PR_TRUE;
}
PRBool CSSParserImpl::ParseSelectorGroup(PRInt32* aErrorCode,
SelectorList* aList)
{
for (;;) {
Selector* sel = new Selector();
if (!ParseSelector(aErrorCode, sel)) {
delete sel;
break;
}
aList->AddSelector(sel);
}
return (PRBool) (aList->mSelectors.Count() > 0);
}
static PRBool IsPseudoClass(const nsString& aBuffer)
{
return (aBuffer.EqualsIgnoreCase("link") ||
aBuffer.EqualsIgnoreCase("visited") ||
aBuffer.EqualsIgnoreCase("hover") ||
aBuffer.EqualsIgnoreCase("out-of-date") || // our extension
aBuffer.EqualsIgnoreCase("active"));
}
/**
* These are the 15 possible kinds of CSS1 style selectors:
* <UL>
* <LI>Tag
* <LI>Tag#Id
* <LI>Tag#Id.Class
* <LI>Tag#Id.Class:Pseudo
* <LI>Tag#Id:Pseudo
* <LI>Tag.Class
* <LI>Tag.Class:Pseudo
* <LI>Tag:Pseudo
* <LI>#Id
* <LI>#Id.Class
* <LI>#Id.Class:Pseudo
* <LI>#Id:Pseudo
* <LI>.Class
* <LI>.Class:Pseudo
* <LI>:Pseudo
* </UL>
*/
PRBool CSSParserImpl::ParseSelector(PRInt32* aErrorCode,
Selector* aSelectorResult)
{
PRUint32 mask = 0;
aSelectorResult->mTag.Truncate(0);
aSelectorResult->mClass.Truncate(0);
aSelectorResult->mID.Truncate(0);
aSelectorResult->mPseudoClass.Truncate(0);
aSelectorResult->mPseudoElement.Truncate(0);
nsCSSToken* tk = &mToken;
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
if (eCSSToken_Ident == tk->mType) {
// tag
mask |= SELECTOR_TAG;
aSelectorResult->mTag.Append(tk->mIdent);
if (!GetToken(aErrorCode, PR_FALSE)) {
// premature eof is ok (here!)
return PR_TRUE;
}
}
if (eCSSToken_ID == tk->mType) {
// #id
if ((1 < tk->mIdent.Length()) && (nsString::IsAlpha(tk->mIdent.CharAt(1)))) { // verify is legal ID
mask |= SELECTOR_ID;
aSelectorResult->mID.Append(tk->mIdent);
if (!GetToken(aErrorCode, PR_FALSE)) {
// premature eof is ok (here!)
return PR_TRUE;
}
}
else {
return PR_FALSE;
}
}
if ((eCSSToken_Symbol == tk->mType) && ('.' == tk->mSymbol)) {
// .class
if (!GetToken(aErrorCode, PR_FALSE)) {
return PR_FALSE;
}
if (eCSSToken_Ident != tk->mType) {
// malformed selector
UngetToken();
return PR_FALSE;
}
mask |= SELECTOR_CLASS;
aSelectorResult->mClass.Append(tk->mIdent);
if (!GetToken(aErrorCode, PR_FALSE)) {
// premature eof is ok (here!)
return PR_TRUE;
}
}
if ((eCSSToken_Symbol == tk->mType) && (':' == tk->mSymbol)) {
// :pseudo
if (!GetToken(aErrorCode, PR_FALSE)) {
// premature eof
return PR_FALSE;
}
if (eCSSToken_Ident != tk->mType) {
// malformed selector
UngetToken();
return PR_FALSE;
}
if (IsPseudoClass(tk->mIdent)) {
mask |= SELECTOR_PSEUDO_CLASS;
aSelectorResult->mPseudoClass.Append(tk->mIdent);
}
else {
mask |= SELECTOR_PSEUDO_ELEMENT;
aSelectorResult->mPseudoElement.Append(':'); // keep the colon
aSelectorResult->mPseudoElement.Append(tk->mIdent);
}
if (!GetToken(aErrorCode, PR_FALSE)) {
// premature eof is ok (here!)
return PR_TRUE;
}
}
if ((eCSSToken_Symbol == tk->mType) && (':' == tk->mSymbol)) {
// :pseudo
if (!GetToken(aErrorCode, PR_FALSE)) {
// premature eof
return PR_FALSE;
}
if (eCSSToken_Ident != tk->mType) {
// malformed selector
UngetToken();
return PR_FALSE;
}
if (! IsPseudoClass(tk->mIdent)) {
mask |= SELECTOR_PSEUDO_ELEMENT;
aSelectorResult->mPseudoElement.Truncate(0);
aSelectorResult->mPseudoElement.Append(':'); // keep the colon
aSelectorResult->mPseudoElement.Append(tk->mIdent);
}
tk = nsnull;
}
if (nsnull != tk) {
UngetToken();
}
if (mask == 0) {
return PR_FALSE;
}
aSelectorResult->mMask = mask;
return PR_TRUE;
}
nsICSSDeclaration*
CSSParserImpl::ParseDeclarationBlock(PRInt32* aErrorCode,
PRBool aCheckForBraces)
{
if (aCheckForBraces) {
if (!ExpectSymbol(aErrorCode, '{', PR_TRUE)) {
return nsnull;
}
}
nsICSSDeclaration* declaration = nsnull;
if (NS_OK == NS_NewCSSDeclaration(&declaration)) {
PRInt32 count = 0;
for (;;) {
if (ParseDeclaration(aErrorCode, declaration, aCheckForBraces)) {
count++; // count declarations
}
else {
if (!SkipDeclaration(aErrorCode, aCheckForBraces)) {
break;
}
if (aCheckForBraces) {
if (ExpectSymbol(aErrorCode, '}', PR_TRUE)) {
break;
}
}
// Since the skipped declaration didn't end the block we parse
// the next declaration.
}
}
if (0 == count) { // didn't get any XXX is this ok with the DOM?
NS_RELEASE(declaration);
}
}
return declaration;
}
PRBool CSSParserImpl::ParseColor(PRInt32* aErrorCode, nscolor* aColorResult)
{
char cbuf[50];
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
nsCSSToken* tk = &mToken;
switch (tk->mType) {
case eCSSToken_ID:
// #xxyyzz
tk->mIdent.ToCString(cbuf, sizeof(cbuf));
if (NS_HexToRGB(cbuf, aColorResult)) {
return PR_TRUE;
}
break;
case eCSSToken_Ident:
if (!tk->mIdent.EqualsIgnoreCase("rgb")) {
// named color (maybe!)
tk->mIdent.ToCString(cbuf, sizeof(cbuf));
if (NS_ColorNameToRGB(cbuf, aColorResult)) {
return PR_TRUE;
}
} else {
// rgb ( component , component , component )
PRUint8 r, g, b;
if (ExpectSymbol(aErrorCode, '(', PR_TRUE) &&
ParseColorComponent(aErrorCode, &r, ',') &&
ParseColorComponent(aErrorCode, &g, ',') &&
ParseColorComponent(aErrorCode, &b, ')')) {
*aColorResult = NS_RGB(r,g,b);
return PR_TRUE;
}
}
break;
default:
break;
}
// It's not a color
UngetToken();
return PR_FALSE;
}
PRBool CSSParserImpl::ParseColorComponent(PRInt32* aErrorCode,
PRUint8* aComponent,
char aStop)
{
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
float value;
nsCSSToken* tk = &mToken;
switch (tk->mType) {
case eCSSToken_Number:
value = tk->mNumber;
break;
case eCSSToken_Percentage:
value = tk->mNumber * 255.0f;
break;
default:
UngetToken();
return PR_FALSE;
}
if (ExpectSymbol(aErrorCode, aStop, PR_TRUE)) {
if (value < 0.0f) value = 0.0f;
if (value > 255.0f) value = 255.0f;
*aComponent = (PRUint8) value;
return PR_TRUE;
}
return PR_FALSE;
}
//----------------------------------------------------------------------
PRBool
CSSParserImpl::ParseDeclaration(PRInt32* aErrorCode,
nsICSSDeclaration* aDeclaration,
PRBool aCheckForBraces)
{
// Get property name
nsCSSToken* tk = &mToken;
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
if (eCSSToken_Ident == tk->mType) {
if (!ExpectSymbol(aErrorCode, ':', PR_TRUE)) {
return PR_FALSE;
}
break;
}
if ((eCSSToken_Symbol == tk->mType) && (';' == tk->mSymbol)) {
// dangling semicolons are skipped
continue;
}
// Not a declaration...
UngetToken();
return PR_FALSE;
}
// Map property name to it's ID and then parse the property
char propertyName[100];
tk->mIdent.ToCString(propertyName, sizeof(propertyName));
if (!ParseProperty(aErrorCode, propertyName, aDeclaration)) {
return PR_FALSE;
}
// See if the declaration is followed by a "!important" declaration
PRBool isImportant = PR_FALSE;
if (!GetToken(aErrorCode, PR_TRUE)) {
if (aCheckForBraces) {
// Premature eof is not ok when proper termination is mandated
return PR_FALSE;
}
return PR_TRUE;
}
else {
if (eCSSToken_Symbol == tk->mType) {
if ('!' == tk->mSymbol) {
// Look for important ident
if (!GetToken(aErrorCode, PR_TRUE)) {
// Premature eof is not ok
return PR_FALSE;
}
if ((eCSSToken_Ident != tk->mType) ||
!tk->mIdent.EqualsIgnoreCase("important")) {
UngetToken();
return PR_FALSE;
}
isImportant = PR_TRUE;
}
else {
// Not a !important declaration
UngetToken();
}
}
else {
// Not a !important declaration
UngetToken();
}
}
if (PR_TRUE == isImportant) {
aDeclaration->SetValueImportant(propertyName);
}
// Make sure valid property declaration is terminated with either a
// semicolon or a right-curly-brace (when aCheckForBraces is true).
// When aCheckForBraces is false, proper termination is either
// semicolon or EOF.
if (!GetToken(aErrorCode, PR_TRUE)) {
if (aCheckForBraces) {
// Premature eof is not ok
return PR_FALSE;
}
return PR_TRUE;
}
if (eCSSToken_Symbol == tk->mType) {
if (';' == tk->mSymbol) {
return PR_TRUE;
}
if (!aCheckForBraces) {
// If we didn't hit eof and we didn't see a semicolon then the
// declaration is not properly terminated.
return PR_FALSE;
}
if ('}' == tk->mSymbol) {
UngetToken();
return PR_TRUE;
}
}
return PR_FALSE;
}
// Flags for ParseVariant method
#define VARIANT_KEYWORD 0x0001
#define VARIANT_LENGTH 0x0002
#define VARIANT_PERCENT 0x0004
#define VARIANT_COLOR 0x0008
#define VARIANT_URL 0x0010
#define VARIANT_NUMBER 0x0020
#define VARIANT_INTEGER 0x0040
#define VARIANT_AUTO 0x0100
#define VARIANT_INHERIT 0x0200
#define VARIANT_NONE 0x0400
#define VARIANT_NORMAL 0x0800
// Common combinations of variants
#define VARIANT_KL (VARIANT_KEYWORD | VARIANT_LENGTH)
#define VARIANT_KLP (VARIANT_KEYWORD | VARIANT_LENGTH | VARIANT_PERCENT)
#define VARIANT_KP (VARIANT_KEYWORD | VARIANT_PERCENT)
#define VARIANT_AH (VARIANT_AUTO | VARIANT_INHERIT)
#define VARIANT_AHLP (VARIANT_AH | VARIANT_LP)
#define VARIANT_AHI (VARIANT_AH | VARIANT_INTEGER)
#define VARIANT_AHK (VARIANT_AH | VARIANT_KEYWORD)
#define VARIANT_AHL (VARIANT_AH | VARIANT_LENGTH)
#define VARIANT_HK (VARIANT_INHERIT | VARIANT_KEYWORD)
#define VARIANT_HL (VARIANT_INHERIT | VARIANT_LENGTH)
#define VARIANT_HLP (VARIANT_HL | VARIANT_PERCENT)
#define VARIANT_HLPN (VARIANT_HLP | VARIANT_NUMBER)
#define VARIANT_HMK (VARIANT_INHERIT | VARIANT_NORMAL | VARIANT_KEYWORD)
#define VARIANT_AL (VARIANT_AUTO | VARIANT_LENGTH)
#define VARIANT_LP (VARIANT_LENGTH | VARIANT_PERCENT)
#define VARIANT_CK (VARIANT_COLOR | VARIANT_KEYWORD)
#define VARIANT_C VARIANT_COLOR
#define VARIANT_UK (VARIANT_URL | VARIANT_KEYWORD)
#define VARIANT_HPN (VARIANT_INHERIT | VARIANT_PERCENT | VARIANT_NUMBER)
// Keyword id tables for variant/enum parsing
static PRInt32 kBackgroundAttachmentKTable[] = {
KEYWORD_FIXED, NS_STYLE_BG_ATTACHMENT_FIXED,
KEYWORD_SCROLL, NS_STYLE_BG_ATTACHMENT_SCROLL,
-1
};
static PRInt32 kBackgroundColorKTable[] = {
KEYWORD_TRANSPARENT, NS_STYLE_BG_COLOR_TRANSPARENT,
-1
};
static PRInt32 kBackgroundRepeatKTable[] = {
KEYWORD_NO_REPEAT, NS_STYLE_BG_REPEAT_OFF,
KEYWORD_REPEAT, NS_STYLE_BG_REPEAT_XY,
KEYWORD_REPEAT_X, NS_STYLE_BG_REPEAT_X,
KEYWORD_REPEAT_Y, NS_STYLE_BG_REPEAT_Y,
-1
};
static PRInt32 kBorderStyleKTable[] = {
KEYWORD_NONE, NS_STYLE_BORDER_STYLE_NONE,
KEYWORD_DOTTED, NS_STYLE_BORDER_STYLE_DOTTED,
KEYWORD_DASHED, NS_STYLE_BORDER_STYLE_DASHED,
KEYWORD_SOLID, NS_STYLE_BORDER_STYLE_SOLID,
KEYWORD_DOUBLE, NS_STYLE_BORDER_STYLE_DOUBLE,
KEYWORD_GROOVE, NS_STYLE_BORDER_STYLE_GROOVE,
KEYWORD_RIDGE, NS_STYLE_BORDER_STYLE_RIDGE,
KEYWORD_INSET, NS_STYLE_BORDER_STYLE_INSET,
KEYWORD_OUTSET, NS_STYLE_BORDER_STYLE_OUTSET,
-1
};
static PRInt32 kBorderWidthKTable[] = {
KEYWORD_THIN, NS_STYLE_BORDER_WIDTH_THIN,
KEYWORD_MEDIUM, NS_STYLE_BORDER_WIDTH_MEDIUM,
KEYWORD_THICK, NS_STYLE_BORDER_WIDTH_THICK,
-1
};
static PRInt32 kClearKTable[] = {
KEYWORD_NONE, NS_STYLE_CLEAR_NONE,
KEYWORD_LEFT, NS_STYLE_CLEAR_LEFT,
KEYWORD_RIGHT, NS_STYLE_CLEAR_RIGHT,
KEYWORD_BOTH, NS_STYLE_CLEAR_LEFT_AND_RIGHT,
-1
};
static PRInt32 kCursorKTable[] = {
KEYWORD_IBEAM, NS_STYLE_CURSOR_IBEAM,
KEYWORD_ARROW, NS_STYLE_CURSOR_DEFAULT,
KEYWORD_HAND, NS_STYLE_CURSOR_HAND,
-1
};
static PRInt32 kDirectionKTable[] = {
KEYWORD_LTR, NS_STYLE_DIRECTION_LTR,
KEYWORD_RTL, NS_STYLE_DIRECTION_RTL,
KEYWORD_INHERIT, NS_STYLE_DIRECTION_INHERIT,
-1
};
static PRInt32 kDisplayKTable[] = {
KEYWORD_NONE, NS_STYLE_DISPLAY_NONE,
KEYWORD_BLOCK, NS_STYLE_DISPLAY_BLOCK,
KEYWORD_INLINE, NS_STYLE_DISPLAY_INLINE,
KEYWORD_LIST_ITEM, NS_STYLE_DISPLAY_LIST_ITEM,
KEYWORD_MARKER, NS_STYLE_DISPLAY_MARKER,
KEYWORD_RUN_IN, NS_STYLE_DISPLAY_RUN_IN,
KEYWORD_COMPACT, NS_STYLE_DISPLAY_COMPACT,
KEYWORD_TABLE, NS_STYLE_DISPLAY_TABLE,
KEYWORD_INLINE_TABLE, NS_STYLE_DISPLAY_INLINE_TABLE,
KEYWORD_TABLE_ROW_GROUP, NS_STYLE_DISPLAY_TABLE_ROW_GROUP,
KEYWORD_TABLE_COLUMN, NS_STYLE_DISPLAY_TABLE_COLUMN,
KEYWORD_TABLE_COLUMN_GROUP, NS_STYLE_DISPLAY_TABLE_COLUMN_GROUP,
KEYWORD_TABLE_HEADER_GROUP, NS_STYLE_DISPLAY_TABLE_HEADER_GROUP,
KEYWORD_TABLE_FOOTER_GROUP, NS_STYLE_DISPLAY_TABLE_FOOTER_GROUP,
KEYWORD_TABLE_ROW, NS_STYLE_DISPLAY_TABLE_ROW,
KEYWORD_TABLE_CELL, NS_STYLE_DISPLAY_TABLE_CELL,
KEYWORD_TABLE_CAPTION, NS_STYLE_DISPLAY_TABLE_CAPTION,
-1
};
static PRInt32 kFloatKTable[] = {
KEYWORD_NONE, NS_STYLE_FLOAT_NONE,
KEYWORD_LEFT, NS_STYLE_FLOAT_LEFT,
KEYWORD_RIGHT, NS_STYLE_FLOAT_RIGHT,
-1
};
static PRInt32 kFontSizeKTable[] = {
KEYWORD_XX_SMALL, NS_STYLE_FONT_SIZE_XXSMALL,
KEYWORD_X_SMALL, NS_STYLE_FONT_SIZE_XSMALL,
KEYWORD_SMALL, NS_STYLE_FONT_SIZE_SMALL,
KEYWORD_MEDIUM, NS_STYLE_FONT_SIZE_MEDIUM,
KEYWORD_LARGE, NS_STYLE_FONT_SIZE_LARGE,
KEYWORD_X_LARGE, NS_STYLE_FONT_SIZE_XLARGE,
KEYWORD_XX_LARGE, NS_STYLE_FONT_SIZE_XXLARGE,
KEYWORD_LARGER, NS_STYLE_FONT_SIZE_LARGER,
KEYWORD_SMALLER, NS_STYLE_FONT_SIZE_SMALLER,
-1
};
static PRInt32 kFontStyleKTable[] = {
KEYWORD_NORMAL, NS_STYLE_FONT_STYLE_NORMAL,
KEYWORD_ITALIC, NS_STYLE_FONT_STYLE_ITALIC,
KEYWORD_OBLIQUE, NS_STYLE_FONT_STYLE_OBLIQUE,
-1
};
static PRInt32 kFontVariantKTable[] = {
KEYWORD_NORMAL, NS_STYLE_FONT_VARIANT_NORMAL,
KEYWORD_SMALL_CAPS, NS_STYLE_FONT_VARIANT_SMALL_CAPS,
-1
};
static PRInt32 kListStyleImageKTable[] = {
KEYWORD_NONE, NS_STYLE_LIST_STYLE_IMAGE_NONE,
-1
};
static PRInt32 kListStylePositionKTable[] = {
KEYWORD_INSIDE, NS_STYLE_LIST_STYLE_POSITION_INSIDE,
KEYWORD_OUTSIDE, NS_STYLE_LIST_STYLE_POSITION_OUTSIDE,
-1
};
static PRInt32 kListStyleKTable[] = {
KEYWORD_NONE, NS_STYLE_LIST_STYLE_NONE,
KEYWORD_DISC, NS_STYLE_LIST_STYLE_DISC,
KEYWORD_CIRCLE, NS_STYLE_LIST_STYLE_CIRCLE,
KEYWORD_SQUARE, NS_STYLE_LIST_STYLE_SQUARE,
KEYWORD_DECIMAL, NS_STYLE_LIST_STYLE_DECIMAL,
KEYWORD_LOWER_ROMAN, NS_STYLE_LIST_STYLE_LOWER_ROMAN,
KEYWORD_UPPER_ROMAN, NS_STYLE_LIST_STYLE_UPPER_ROMAN,
KEYWORD_LOWER_ALPHA, NS_STYLE_LIST_STYLE_LOWER_ALPHA,
KEYWORD_UPPER_ALPHA, NS_STYLE_LIST_STYLE_UPPER_ALPHA,
-1
};
static PRInt32 kMarginSizeKTable[] = {
KEYWORD_AUTO, NS_STYLE_MARGIN_SIZE_AUTO,
-1
};
static PRInt32 kOverflowKTable[] = {
KEYWORD_VISIBLE, NS_STYLE_OVERFLOW_VISIBLE,
KEYWORD_HIDDEN, NS_STYLE_OVERFLOW_HIDDEN,
KEYWORD_SCROLL, NS_STYLE_OVERFLOW_SCROLL,
KEYWORD_AUTO, NS_STYLE_OVERFLOW_AUTO,
-1
};
static PRInt32 kPositionKTable[] = {
KEYWORD_RELATIVE, NS_STYLE_POSITION_RELATIVE,
KEYWORD_ABSOLUTE, NS_STYLE_POSITION_ABSOLUTE,
KEYWORD_FIXED, NS_STYLE_POSITION_FIXED,
-1
};
static PRInt32 kTextAlignKTable[] = {
KEYWORD_LEFT, NS_STYLE_TEXT_ALIGN_LEFT,
KEYWORD_RIGHT, NS_STYLE_TEXT_ALIGN_RIGHT,
KEYWORD_CENTER, NS_STYLE_TEXT_ALIGN_CENTER,
KEYWORD_JUSTIFY, NS_STYLE_TEXT_ALIGN_JUSTIFY,
-1
};
static PRInt32 kTextTransformKTable[] = {
KEYWORD_NONE, NS_STYLE_TEXT_TRANSFORM_NONE,
KEYWORD_CAPITALIZE, NS_STYLE_TEXT_TRANSFORM_CAPITALIZE,
KEYWORD_LOWERCASE, NS_STYLE_TEXT_TRANSFORM_LOWERCASE,
KEYWORD_UPPERCASE, NS_STYLE_TEXT_TRANSFORM_UPPERCASE,
-1
};
static PRInt32 kVerticalAlignKTable[] = {
KEYWORD_BASELINE, NS_STYLE_VERTICAL_ALIGN_BASELINE,
KEYWORD_SUB, NS_STYLE_VERTICAL_ALIGN_SUB,
KEYWORD_SUPER, NS_STYLE_VERTICAL_ALIGN_SUPER,
KEYWORD_TOP, NS_STYLE_VERTICAL_ALIGN_TOP,
KEYWORD_TEXT_TOP, NS_STYLE_VERTICAL_ALIGN_TEXT_TOP,
KEYWORD_MIDDLE, NS_STYLE_VERTICAL_ALIGN_MIDDLE,
KEYWORD_BOTTOM, NS_STYLE_VERTICAL_ALIGN_BOTTOM,
KEYWORD_TEXT_BOTTOM, NS_STYLE_VERTICAL_ALIGN_TEXT_BOTTOM,
-1
};
static PRInt32 kVisibilityKTable[] = {
KEYWORD_VISIBLE, NS_STYLE_VISIBILITY_VISIBLE,
KEYWORD_HIDDEN, NS_STYLE_VISIBILITY_HIDDEN,
-1
};
static PRInt32 kWhitespaceKTable[] = {
KEYWORD_NORMAL, NS_STYLE_WHITESPACE_NORMAL,
KEYWORD_PRE, NS_STYLE_WHITESPACE_PRE,
KEYWORD_NOWRAP, NS_STYLE_WHITESPACE_NOWRAP,
-1
};
static const char* kBorderTopNames[] = {
"border-top-width",
"border-top-style",
"border-top-color",
};
static const char* kBorderRightNames[] = {
"border-right-width",
"border-right-style",
"border-right-color",
};
static const char* kBorderBottomNames[] = {
"border-bottom-width",
"border-bottom-style",
"border-bottom-color",
};
static const char* kBorderLeftNames[] = {
"border-left-width",
"border-left-style",
"border-left-color",
};
PRInt32 CSSParserImpl::SearchKeywordTable(PRInt32 aID, PRInt32 aTable[])
{
PRInt32 i = 0;
for (;;) {
if (aTable[i] < 0) {
break;
}
if (aID == aTable[i]) {
return i;
}
i += 2;
}
return -1;
}
PRBool CSSParserImpl::ParseEnum(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aName, PRInt32* aTable)
{
nsString* ident = NextIdent(aErrorCode);
if (nsnull == ident) {
return PR_FALSE;
}
char cbuf[50];
ident->ToCString(cbuf, sizeof(cbuf));
PRInt32 id = nsCSSKeywords::LookupName(cbuf);
if (id >= 0) {
PRInt32 ix = SearchKeywordTable(id, aTable);
if (ix >= 0) {
aDeclaration->AppendValue(aName, nsCSSValue(aTable[ix+1], eCSSUnit_Enumerated));
return PR_TRUE;
}
}
// Put the unknown identifier back and return
UngetToken();
return PR_FALSE;
}
PRBool CSSParserImpl::TranslateLength(nsICSSDeclaration* aDeclaration,
const char* aName,
float aNumber,
const nsString& aDimension)
{
nsCSSUnit units;
if (0 != aDimension.Length()) {
char cbuf[50];
aDimension.ToCString(cbuf, sizeof(cbuf));
PRInt32 id = nsCSSKeywords::LookupName(cbuf);
switch (id) {
case KEYWORD_EM: units = eCSSUnit_EM; break;
case KEYWORD_EX: units = eCSSUnit_XHeight; break;
case KEYWORD_PX: units = eCSSUnit_Pixel; break;
case KEYWORD_IN: units = eCSSUnit_Inch; break;
case KEYWORD_CM: units = eCSSUnit_Centimeter; break;
case KEYWORD_MM: units = eCSSUnit_Millimeter; break;
case KEYWORD_PT: units = eCSSUnit_Point; break;
case KEYWORD_PC: units = eCSSUnit_Pica; break;
default:
// unknown dimension
return PR_FALSE;
}
} else {
// Must be a zero number...
units = eCSSUnit_Point;
}
aDeclaration->AppendValue(aName, nsCSSValue(aNumber, units));
return PR_TRUE;
}
PRBool CSSParserImpl::ParseVariant(PRInt32* aErrorCode,
nsICSSDeclaration* aDeclaration,
const char* aName,
PRInt32 aVariants, PRInt32* aTable)
{
nsCSSToken* tk = &mToken;
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
if (((aVariants & (VARIANT_AHK | VARIANT_NORMAL | VARIANT_NONE)) != 0) &&
(eCSSToken_Ident == tk->mType)) {
char cbuf[50];
tk->mIdent.ToCString(cbuf, sizeof(cbuf));
PRInt32 sid = nsCSSKeywords::LookupName(cbuf);
if (sid >= 0) { // known keyword
if ((aVariants & VARIANT_AUTO) != 0) {
if (sid == KEYWORD_AUTO) {
aDeclaration->AppendValue(aName, nsCSSValue(eCSSUnit_Auto));
return PR_TRUE;
}
}
if ((aVariants & VARIANT_INHERIT) != 0) {
if (sid == KEYWORD_INHERIT) {
aDeclaration->AppendValue(aName, nsCSSValue(eCSSUnit_Inherit));
return PR_TRUE;
}
}
if ((aVariants & VARIANT_NONE) != 0) {
if (sid == KEYWORD_NONE) {
aDeclaration->AppendValue(aName, nsCSSValue(eCSSUnit_None));
return PR_TRUE;
}
}
if ((aVariants & VARIANT_NORMAL) != 0) {
if (sid == KEYWORD_NORMAL) {
aDeclaration->AppendValue(aName, nsCSSValue(eCSSUnit_Normal));
return PR_TRUE;
}
}
if ((aVariants & VARIANT_KEYWORD) != 0) {
PRInt32 ix = SearchKeywordTable(sid, aTable);
if (ix >= 0) {
aDeclaration->AppendValue(aName, nsCSSValue(aTable[ix+1], eCSSUnit_Enumerated));
return PR_TRUE;
}
}
}
}
if (((aVariants & VARIANT_LENGTH) != 0) && tk->isDimension()) {
return TranslateLength(aDeclaration, aName, tk->mNumber, tk->mIdent);
}
if (((aVariants & VARIANT_PERCENT) != 0) &&
(eCSSToken_Percentage == tk->mType)) {
aDeclaration->AppendValue(aName, nsCSSValue(tk->mNumber, eCSSUnit_Percent));
return PR_TRUE;
}
if (((aVariants & VARIANT_NUMBER) != 0) &&
(eCSSToken_Number == tk->mType)) {
aDeclaration->AppendValue(aName, nsCSSValue(tk->mNumber, eCSSUnit_Number));
return PR_TRUE;
}
if (((aVariants & VARIANT_INTEGER) != 0) &&
(eCSSToken_Number == tk->mType) && tk->mIntegerValid) {
aDeclaration->AppendValue(aName, nsCSSValue(tk->mInteger, eCSSUnit_Integer));
return PR_TRUE;
}
if (((aVariants & VARIANT_URL) != 0) &&
(eCSSToken_URL == tk->mType)) {
// Translate url into an absolute url if the url is relative to
// the style sheet.
// XXX editors won't like this - too bad for now
nsAutoString absURL;
nsString baseURL;
nsresult rv = NS_MakeAbsoluteURL(mURL, baseURL, tk->mIdent, absURL);
if (NS_OK == rv) {
aDeclaration->AppendValue(aName, nsCSSValue(absURL));
}
else {
aDeclaration->AppendValue(aName, nsCSSValue(tk->mIdent));
}
return PR_TRUE;
}
if ((aVariants & VARIANT_COLOR) != 0) {
if ((eCSSToken_ID == tk->mType) || (eCSSToken_Ident == tk->mType)) {
// Put token back so that parse color can get it
UngetToken();
nscolor rgba;
// XXX This loses the original input format (e.g. a name which
// should be preserved when editing)
if (ParseColor(aErrorCode, &rgba)) {
aDeclaration->AppendValue(aName, nsCSSValue(rgba));
return PR_TRUE;
}
return PR_FALSE;
}
}
UngetToken();
return PR_FALSE;
}
PRInt32 CSSParserImpl::ParseChoice(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aNames[], PRInt32 aNumNames)
{
PRInt32 found = 0;
for (int i = 0; i < aNumNames; i++) {
// Try each property parser in order
for (int j = 0; j < aNumNames; j++) {
PRInt32 bit = 1 << j;
if ((found & bit) == 0) {
PRInt32 id = nsCSSProps::LookupName(aNames[j]);
if (ParseProperty(aErrorCode, aNames[j], aDeclaration, id)) {
found |= bit;
}
}
}
}
return found;
}
/**
* Parse a "box" property. Box properties have 1 to 4 values. When less
* than 4 values are provided a standard mapping is used to replicate
* existing values. Note that the replication requires renaming the
* values.
*/
PRBool CSSParserImpl::ParseBoxProperties(PRInt32* aErrorCode,
nsICSSDeclaration* aDeclaration,
const char* aNames[])
{
// Get up to four values for the property
PRInt32 count = 0;
for (int i = 0; i < 4; i++) {
PRInt32 id = nsCSSProps::LookupName(aNames[i]);
if (!ParseProperty(aErrorCode, aNames[i], aDeclaration, id)) {
break;
}
count++;
}
if (count == 0) {
return PR_FALSE;
}
// Provide missing values by replicating some of the values found
nsCSSValue value;
switch (count) {
case 1: // Make right == top
aDeclaration->GetValue(aNames[0], value);
aDeclaration->AppendValue(aNames[1], value);
case 2: // Make bottom == top
aDeclaration->GetValue(aNames[0], value);
aDeclaration->AppendValue(aNames[2], value);
case 3: // Make left == right
aDeclaration->GetValue(aNames[1], value);
aDeclaration->AppendValue(aNames[3], value);
}
return PR_TRUE;
}
PRBool CSSParserImpl::ParseProperty(PRInt32* aErrorCode,
const char* aName,
nsICSSDeclaration* aDeclaration)
{
PRInt32 id = nsCSSProps::LookupName(aName);
if (id < 0) {
return PR_FALSE;
}
// Strip out properties we use internally. These properties are used
// by compound property parsing routines (e.g. "background-position").
switch (id) {
case PROP_BACKGROUND_X_POSITION:
case PROP_BACKGROUND_Y_POSITION:
case PROP_BORDER_TOP_COLOR:
case PROP_BORDER_RIGHT_COLOR:
case PROP_BORDER_BOTTOM_COLOR:
case PROP_BORDER_LEFT_COLOR:
case PROP_BORDER_TOP_STYLE:
case PROP_BORDER_RIGHT_STYLE:
case PROP_BORDER_BOTTOM_STYLE:
case PROP_BORDER_LEFT_STYLE:
case PROP_CLIP_BOTTOM:
case PROP_CLIP_LEFT:
case PROP_CLIP_RIGHT:
case PROP_CLIP_TOP:
// The user can't use these
return PR_FALSE;
}
return ParseProperty(aErrorCode, aName, aDeclaration, id);
}
PRBool CSSParserImpl::ParseProperty(PRInt32* aErrorCode,
const char* aName,
nsICSSDeclaration* aDeclaration,
PRInt32 aID)
{
switch (aID) {
case PROP_BACKGROUND:
return ParseBackground(aErrorCode, aDeclaration);
case PROP_BACKGROUND_ATTACHMENT:
return ParseEnum(aErrorCode, aDeclaration, aName, kBackgroundAttachmentKTable);
case PROP_BACKGROUND_COLOR:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_CK,
kBackgroundColorKTable);
case PROP_BACKGROUND_FILTER:
return ParseBackgroundFilter(aErrorCode, aDeclaration, aName);
case PROP_BACKGROUND_IMAGE:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_URL | VARIANT_NONE,
nsnull);
case PROP_BACKGROUND_POSITION:
return ParseBackgroundPosition(aErrorCode, aDeclaration, aName);
case PROP_BACKGROUND_REPEAT:
return ParseEnum(aErrorCode, aDeclaration, aName, kBackgroundRepeatKTable);
case PROP_BORDER:
return ParseBorder(aErrorCode, aDeclaration);
case PROP_BORDER_COLOR:
return ParseBorderColor(aErrorCode, aDeclaration);
case PROP_BORDER_STYLE:
return ParseBorderStyle(aErrorCode, aDeclaration);
case PROP_BORDER_BOTTOM:
return ParseBorderSide(aErrorCode, aDeclaration, kBorderBottomNames, 0);
case PROP_BORDER_LEFT:
return ParseBorderSide(aErrorCode, aDeclaration, kBorderLeftNames, 1);
case PROP_BORDER_RIGHT:
return ParseBorderSide(aErrorCode, aDeclaration, kBorderRightNames, 2);
case PROP_BORDER_TOP:
return ParseBorderSide(aErrorCode, aDeclaration, kBorderTopNames, 3);
case PROP_BORDER_BOTTOM_COLOR:
case PROP_BORDER_LEFT_COLOR:
case PROP_BORDER_RIGHT_COLOR:
case PROP_BORDER_TOP_COLOR:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_C, nsnull);
case PROP_BORDER_BOTTOM_STYLE:
case PROP_BORDER_LEFT_STYLE:
case PROP_BORDER_RIGHT_STYLE:
case PROP_BORDER_TOP_STYLE:
return ParseEnum(aErrorCode, aDeclaration, aName, kBorderStyleKTable);
case PROP_BORDER_BOTTOM_WIDTH:
case PROP_BORDER_LEFT_WIDTH:
case PROP_BORDER_RIGHT_WIDTH:
case PROP_BORDER_TOP_WIDTH:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_KL,
kBorderWidthKTable);
case PROP_BORDER_WIDTH:
return ParseBorderWidth(aErrorCode, aDeclaration);
case PROP_CLEAR:
return ParseEnum(aErrorCode, aDeclaration, aName, kClearKTable);
case PROP_CLIP:
return ParseClip(aErrorCode, aDeclaration);
case PROP_COLOR:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_COLOR, nsnull);
case PROP_CURSOR:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_AHK, kCursorKTable);
case PROP_DIRECTION:
return ParseEnum(aErrorCode, aDeclaration, aName, kDirectionKTable);
case PROP_DISPLAY:
return ParseEnum(aErrorCode, aDeclaration, aName, kDisplayKTable);
case PROP_FILTER:
return ParseForegroundFilter(aErrorCode, aDeclaration, aName);
case PROP_FLOAT:
return ParseEnum(aErrorCode, aDeclaration, aName, kFloatKTable);
case PROP_FONT:
return ParseFont(aErrorCode, aDeclaration, aName);
case PROP_FONT_FAMILY:
return ParseFontFamily(aErrorCode, aDeclaration, aName);
case PROP_FONT_SIZE:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_KLP,
kFontSizeKTable);
case PROP_FONT_STYLE:
return ParseEnum(aErrorCode, aDeclaration, aName, kFontStyleKTable);
case PROP_FONT_VARIANT:
return ParseEnum(aErrorCode, aDeclaration, aName, kFontVariantKTable);
case PROP_FONT_WEIGHT:
return ParseFontWeight(aErrorCode, aDeclaration, aName);
case PROP_HEIGHT:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_AHLP, nsnull);
case PROP_LEFT:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_AHLP, nsnull);
case PROP_LINE_HEIGHT:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_HLPN | VARIANT_NORMAL,
nsnull);
case PROP_LIST_STYLE:
return ParseListStyle(aErrorCode, aDeclaration);
case PROP_LIST_STYLE_IMAGE:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_UK,
kListStyleImageKTable);
case PROP_LIST_STYLE_POSITION:
return ParseEnum(aErrorCode, aDeclaration, aName, kListStylePositionKTable);
case PROP_LIST_STYLE_TYPE:
return ParseEnum(aErrorCode, aDeclaration, aName, kListStyleKTable);
case PROP_MARGIN:
return ParseMargin(aErrorCode, aDeclaration);
case PROP_MARGIN_BOTTOM:
case PROP_MARGIN_LEFT:
case PROP_MARGIN_RIGHT:
case PROP_MARGIN_TOP:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_KLP,
kMarginSizeKTable);
case PROP_PADDING:
return ParsePadding(aErrorCode, aDeclaration);
case PROP_PADDING_BOTTOM:
case PROP_PADDING_LEFT:
case PROP_PADDING_RIGHT:
case PROP_PADDING_TOP:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_LP, nsnull);
case PROP_OPACITY:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_HPN, nsnull);
case PROP_OVERFLOW:
return ParseEnum(aErrorCode, aDeclaration, aName, kOverflowKTable);
case PROP_POSITION:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_HMK, kPositionKTable);
case PROP_TEXT_ALIGN:
return ParseEnum(aErrorCode, aDeclaration, aName, kTextAlignKTable);
case PROP_TEXT_DECORATION:
return ParseTextDecoration(aErrorCode, aDeclaration, aName);
case PROP_TEXT_INDENT:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_LP, nsnull);
case PROP_TEXT_TRANSFORM:
return ParseEnum(aErrorCode, aDeclaration, aName, kTextTransformKTable);
case PROP_TOP:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_AHLP, nsnull);
case PROP_VERTICAL_ALIGN:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_KP,
kVerticalAlignKTable);
case PROP_VISIBILITY:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_HK, kVisibilityKTable);
case PROP_WHITE_SPACE:
return ParseEnum(aErrorCode, aDeclaration, aName, kWhitespaceKTable);
case PROP_WIDTH:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_AHLP, nsnull);
case PROP_LETTER_SPACING:
case PROP_WORD_SPACING:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_HL | VARIANT_NORMAL, nsnull);
case PROP_Z_INDEX:
return ParseVariant(aErrorCode, aDeclaration, aName, VARIANT_AHI, nsnull);
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseBackground(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration)
{
static const char* kBackgroundNames[] = {
"background-color",
"background-image",
"background-repeat",
"background-attachment",
"background-position",
"background-filter",
};
PRInt32 found = ParseChoice(aErrorCode, aDeclaration, kBackgroundNames, 6);
if (0 == found) {
return PR_FALSE;
}
// Provide missing values
if ((found & 1) == 0) {
aDeclaration->AppendValue(kBackgroundNames[0],
nsCSSValue(NS_STYLE_BG_COLOR_TRANSPARENT,
eCSSUnit_Enumerated));
}
if ((found & 2) == 0) {
aDeclaration->AppendValue(kBackgroundNames[1],
nsCSSValue(NS_STYLE_BG_IMAGE_NONE,
eCSSUnit_Enumerated));
}
if ((found & 4) == 0) {
aDeclaration->AppendValue(kBackgroundNames[2],
nsCSSValue(NS_STYLE_BG_REPEAT_XY,
eCSSUnit_Enumerated));
}
if ((found & 8) == 0) {
aDeclaration->AppendValue(kBackgroundNames[3],
nsCSSValue(NS_STYLE_BG_ATTACHMENT_SCROLL,
eCSSUnit_Enumerated));
}
if ((found & 16) == 0) {
aDeclaration->AppendValue("background-x-position", nsCSSValue(0.0f, eCSSUnit_Percent));
aDeclaration->AppendValue("background-y-position", nsCSSValue(0.0f, eCSSUnit_Percent));
}
// XXX Note: no default for filter (yet)
return PR_TRUE;
}
// Bits used in determining which background position info we have
#define BG_CENTER 0
#define BG_TOP 1
#define BG_BOTTOM 2
#define BG_LEFT 4
#define BG_RIGHT 8
#define BG_CENTER1 16
#define BG_CENTER2 32
PRBool CSSParserImpl::ParseBackgroundPosition(PRInt32* aErrorCode,
nsICSSDeclaration* aDeclaration,
const char* aName)
{
static PRInt32 kBackgroundPositionNames[] = {
PROP_BACKGROUND_X_POSITION,
PROP_BACKGROUND_Y_POSITION,
};
// Note: Don't change this table unless you update
// parseBackgroundPosition!
static PRInt32 kBackgroundXYPositionKTable[] = {
KEYWORD_CENTER, BG_CENTER,
KEYWORD_TOP, BG_TOP,
KEYWORD_BOTTOM, BG_BOTTOM,
KEYWORD_LEFT, BG_LEFT,
KEYWORD_RIGHT, BG_RIGHT,
-1,
};
const char* bxp = "background-x-position";
const char* byp = "background-y-position";
// First try a number or a length value
if (ParseVariant(aErrorCode, aDeclaration, bxp, VARIANT_LP, nsnull)) {
// We have one number/length. Get the optional second number/length.
if (ParseVariant(aErrorCode, aDeclaration, byp, VARIANT_LP, nsnull)) {
// We have two numbers
return PR_TRUE;
}
// We have one number which is the x position. Create an value for
// the vertical position which is of value 50%
aDeclaration->AppendValue(byp, nsCSSValue(0.5f, eCSSUnit_Percent));
// XXX shouldn't this be CENTER enum instead?
return PR_TRUE;
}
// Now try keywords. We do this manually to allow for the first
// appearance of "center" to apply to the either the x or y
// position (it's ambiguous so we have to disambiguate). Each
// allowed keyword value is assigned it's own bit. We don't allow
// any duplicate keywords other than center. We try to get two
// keywords but it's okay if there is only one.
PRInt32 mask = 0;
PRInt32 centerBit = BG_CENTER1;
for (PRInt32 i = 0; i < 2; i++) {
nsString* ident = NextIdent(aErrorCode);
if (nsnull == ident) {
break;
}
char cbuf[50];
ident->ToCString(cbuf, sizeof(cbuf));
PRInt32 ix = SearchKeywordTable(nsCSSKeywords::LookupName(cbuf),
kBackgroundXYPositionKTable);
if (ix >= 0) {
PRInt32 bit = kBackgroundXYPositionKTable[ix + 1];
if (bit == 0) {
// Special hack for center bits: We can have two of them
mask |= centerBit;
centerBit <<= 1;
continue;
} else if ((mask & bit) != 0) {
// no duplicate values allowed (other than center)
return PR_FALSE;
}
mask |= bit;
} else {
UngetToken();
break;
}
}
// Check for bad input. Bad input consists of no matching keywords,
// or pairs of x keywords or pairs of y keywords.
if ((mask == 0) || (mask == (BG_TOP | BG_BOTTOM)) ||
(mask == (BG_LEFT | BG_RIGHT))) {
return PR_FALSE;
}
// Map good input
int xValue = 50;
if ((mask & (BG_LEFT | BG_RIGHT)) != 0) {
// We have an x value
xValue = ((mask & BG_LEFT) != 0) ? 0 : 100;
}
int yValue = 50;
if ((mask & (BG_TOP | BG_BOTTOM)) != 0) {
// We have a y value
yValue = ((mask & BG_TOP) != 0) ? 0 : 100;
}
// Create style values
aDeclaration->AppendValue(bxp, nsCSSValue(xValue, eCSSUnit_Enumerated));
aDeclaration->AppendValue(byp, nsCSSValue(yValue, eCSSUnit_Enumerated));
return PR_TRUE;
}
PRBool CSSParserImpl::ParseBackgroundFilter(PRInt32* aErrorCode,
nsICSSDeclaration* aDeclaration,
const char* aName)
{
// XXX not yet supported
return PR_FALSE;
}
PRBool CSSParserImpl::ParseForegroundFilter(PRInt32* aErrorCode,
nsICSSDeclaration* aDeclaration,
const char* aName)
{
// XXX not yet supported
return PR_FALSE;
}
// These must be in alphabetical order for aWhich based indexing to work
static const char* kBorderStyleNames[] = {
"border-bottom-style",
"border-left-style",
"border-right-style",
"border-top-style",
};
static const char* kBorderWidthNames[] = {
"border-bottom-width",
"border-left-width",
"border-right-width",
"border-top-width",
};
PRBool CSSParserImpl::ParseBorder(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration)
{
static const char* kBorderNames[] = {
"border-width",
"border-style",
"border-color"
};
PRInt32 found = ParseChoice(aErrorCode, aDeclaration, kBorderNames, 3);
if (0 == found) {
return PR_FALSE;
}
if (0 == (found & 1)) {
// provide missing border width's
for (int i = 0; i < 4; i++) {
aDeclaration->AppendValue(kBorderWidthNames[i],
nsCSSValue(NS_STYLE_BORDER_WIDTH_MEDIUM,
eCSSUnit_Enumerated));
}
}
if (0 == (found & 2)) {
// provide missing border style's
for (int i = 0; i < 4; i++) {
aDeclaration->AppendValue(kBorderStyleNames[i],
nsCSSValue(NS_STYLE_BORDER_STYLE_NONE,
eCSSUnit_Enumerated));
}
}
// Do NOT provide a missing color value as the default is to be
// the color of the element itself which must be determined later.
return PR_TRUE;
}
PRBool CSSParserImpl::ParseBorderColor(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration)
{
static const char* kBoxBorderColorNames[] = {
"border-top-color",
"border-right-color",
"border-bottom-color",
"border-left-color",
};
return ParseBoxProperties(aErrorCode, aDeclaration, kBoxBorderColorNames);
}
PRBool CSSParserImpl::ParseBorderSide(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aNames[], PRInt32 aWhich)
{
PRInt32 found = ParseChoice(aErrorCode, aDeclaration, aNames, 3);
if (found == 0) return PR_FALSE;
if ((found & 1) == 0) {
// Provide default border-width
aDeclaration->AppendValue(kBorderWidthNames[aWhich],
nsCSSValue(NS_STYLE_BORDER_WIDTH_MEDIUM, eCSSUnit_Enumerated));
}
if ((found & 2) == 0) {
// Provide default border-style
aDeclaration->AppendValue(kBorderStyleNames[aWhich],
nsCSSValue(NS_STYLE_BORDER_STYLE_NONE, eCSSUnit_Enumerated));
}
// Do NOT provide a missing color value as the default is to be
// the color of the element itself which must be determined later.
return PR_TRUE;
}
PRBool CSSParserImpl::ParseBorderStyle(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration)
{
// in top, right, bottom, left order
static const char* kBoxBorderStyleNames[] = {
"border-top-style",
"border-right-style",
"border-bottom-style",
"border-left-style",
};
return ParseBoxProperties(aErrorCode, aDeclaration, kBoxBorderStyleNames);
}
PRBool CSSParserImpl::ParseBorderWidth(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration)
{
static const char* kBoxBorderWidthNames[] = {
"border-top-width",
"border-right-width",
"border-bottom-width",
"border-left-width",
};
return ParseBoxProperties(aErrorCode, aDeclaration, kBoxBorderWidthNames);
}
PRBool CSSParserImpl::ParseClip(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration)
{
static const char* kClipNames[] = {
"clip-top",
"clip-right",
"clip-bottom",
"clip-left",
};
nsString* ident = NextIdent(aErrorCode);
if (nsnull == ident) {
return PR_FALSE;
}
if (ident->EqualsIgnoreCase("auto")) {
for (int i = 0; i < 4; i++) {
aDeclaration->AppendValue(kClipNames[i], nsCSSValue(eCSSUnit_Auto));
}
return PR_TRUE;
} else if (ident->EqualsIgnoreCase("inherit")) {
for (int i = 0; i < 4; i++) {
aDeclaration->AppendValue(kClipNames[i], nsCSSValue(eCSSUnit_Inherit));
}
return PR_TRUE;
} else if (ident->EqualsIgnoreCase("rect")) {
if (!ExpectSymbol(aErrorCode, '(', PR_TRUE)) {
return PR_FALSE;
}
for (int i = 0; i < 4; i++) {
if (!ParseVariant(aErrorCode, aDeclaration, kClipNames[i], VARIANT_AL, nsnull)) {
return PR_FALSE;
}
if (3 != i) {
// skip optional commas between elements
ExpectSymbol(aErrorCode, ',', PR_TRUE);
}
}
if (!ExpectSymbol(aErrorCode, ')', PR_TRUE)) {
return PR_FALSE;
}
return PR_TRUE;
} else {
UngetToken();
}
return PR_FALSE;
}
PRBool CSSParserImpl::ParseFont(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aName)
{
static const char* fontNames[] = {
"font-style",
"font-variant",
"font-weight",
};
// Get optional font-style, font-variant and font-weight (in any order)
PRInt32 found = ParseChoice(aErrorCode, aDeclaration, fontNames, 3);
if ((found & 1) == 0) {
// Provide default font-style
aDeclaration->AppendValue(fontNames[0],
nsCSSValue(NS_STYLE_FONT_STYLE_NORMAL, eCSSUnit_Enumerated));
}
if ((found & 2) == 0) {
// Provide default font-variant
aDeclaration->AppendValue(fontNames[1],
nsCSSValue(NS_STYLE_FONT_VARIANT_NORMAL, eCSSUnit_Enumerated));
}
if ((found & 4) == 0) {
// Provide default font-weight
aDeclaration->AppendValue(fontNames[2],
nsCSSValue(NS_STYLE_FONT_WEIGHT_NORMAL, eCSSUnit_Enumerated));
}
// Get mandatory font-size
if (!ParseVariant(aErrorCode, aDeclaration, "font-size",
VARIANT_KLP, kFontSizeKTable)) {
return PR_FALSE;
}
// Get optional "/" line-height
if (ExpectSymbol(aErrorCode, '/', PR_TRUE)) {
if (!ParseVariant(aErrorCode, aDeclaration, "line-height",
VARIANT_HLPN | VARIANT_NORMAL, nsnull)) {
return PR_FALSE;
}
}
// Get final mandatory font-family
return ParseFontFamily(aErrorCode, aDeclaration, "font-family");
}
PRBool CSSParserImpl::ParseFontFamily(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aName)
{
nsCSSToken* tk = &mToken;
nsAutoString family;
PRBool firstOne = PR_TRUE;
for (;;) {
if (!GetToken(aErrorCode, PR_TRUE)) {
break;
}
if (eCSSToken_Ident == tk->mType) {
if (!firstOne) {
family.Append(PRUnichar(','));
}
family.Append(PRUnichar('"'));
family.Append(tk->mIdent);
for (;;) {
if (!GetToken(aErrorCode, PR_FALSE)) {
break;
}
if (eCSSToken_Ident == tk->mType) {
family.Append(tk->mIdent);
} else if (eCSSToken_WhiteSpace == tk->mType) {
// Lookahead one token and drop whitespace if we ending the
// font name.
if (!GetToken(aErrorCode, PR_TRUE)) {
break;
}
if (eCSSToken_Ident != tk->mType) {
UngetToken();
break;
}
UngetToken();
family.Append(PRUnichar(' '));
} else {
UngetToken();
break;
}
}
family.Append(PRUnichar('"'));
firstOne = PR_FALSE;
} else if (eCSSToken_String == tk->mType) {
if (!firstOne) {
family.Append(PRUnichar(','));
}
family.Append(PRUnichar('"'));
family.Append(tk->mIdent);
family.Append(PRUnichar('"'));
firstOne = PR_FALSE;
} else if (eCSSToken_Symbol == tk->mType) {
if (',' != tk->mSymbol) {
UngetToken();
break;
}
} else {
UngetToken();
break;
}
}
if (family.Length() == 0) {
return PR_FALSE;
}
aDeclaration->AppendValue(aName, nsCSSValue(family));
return PR_TRUE;
}
PRBool CSSParserImpl::ParseFontWeight(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration,
const char* aName)
{
static PRInt32 kFontWeightKTable[] = {
KEYWORD_NORMAL, NS_STYLE_FONT_WEIGHT_NORMAL,
KEYWORD_BOLD, NS_STYLE_FONT_WEIGHT_BOLD,
KEYWORD_BOLDER, NS_STYLE_FONT_WEIGHT_BOLDER,
KEYWORD_LIGHTER, NS_STYLE_FONT_WEIGHT_LIGHTER,
-1,
};
nsCSSToken* tk = &mToken;
if (!GetToken(aErrorCode, PR_TRUE)) {
return PR_FALSE;
}
if (eCSSToken_Ident == tk->mType) {
char cbuf[50];
tk->mIdent.ToCString(cbuf, sizeof(cbuf));
PRInt32 kid = nsCSSKeywords::LookupName(cbuf);
PRInt32 ix = SearchKeywordTable(kid, kFontWeightKTable);
if (ix < 0) {
UngetToken();
return PR_FALSE;
}
aDeclaration->AppendValue(aName, nsCSSValue(kFontWeightKTable[ix+1], eCSSUnit_Enumerated));
} else if (eCSSToken_Number == tk->mType) {
PRInt32 v = (PRInt32) tk->mNumber;
if (v < 100) v = 100;
else if (v > 900) v = 900;
v = v - (v % 100);
aDeclaration->AppendValue(aName, nsCSSValue(v, eCSSUnit_Integer));
} else {
UngetToken();
return PR_FALSE;
}
return PR_TRUE;
}
PRBool CSSParserImpl::ParseListStyle(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration)
{
const char* lst = "list-style-type";
const char* lsp = "list-style-position";
const char* lsi = "list-style-image";
int found = 0;
for (int i = 0; i < 3; i++) {
if (((found & 1) == 0) &&
ParseEnum(aErrorCode, aDeclaration, lst, kListStyleKTable)) {
found |= 1;
continue;
}
if (((found & 2) == 0) &&
ParseEnum(aErrorCode, aDeclaration, lsp, kListStylePositionKTable)) {
found |= 2;
continue;
}
if ((found & 4) == 0) {
if (!GetToken(aErrorCode, PR_TRUE)) {
break;
}
if (eCSSToken_URL == mToken.mType) {
aDeclaration->AppendValue(lsi, nsCSSValue(mToken.mIdent));
found |= 4;
continue;
} else {
if (eCSSToken_Symbol == mToken.mType) {
PRUnichar symbol = mToken.mSymbol;
if ((';' == symbol) || ('}' == symbol)) {
UngetToken();
break;
}
}
// We got something strange. That's an error.
UngetToken();
return PR_FALSE;
}
}
}
if (found == 0) {
return PR_FALSE;
}
// Provide default values
if ((found & 1) == 0) {
aDeclaration->AppendValue(lst, nsCSSValue(NS_STYLE_LIST_STYLE_DISC, eCSSUnit_Enumerated));
}
if ((found & 2) == 0) {
aDeclaration->AppendValue(lsp, nsCSSValue(NS_STYLE_LIST_STYLE_POSITION_OUTSIDE, eCSSUnit_Enumerated));
}
if ((found & 4) == 0) {
aDeclaration->AppendValue(lsi, nsCSSValue(NS_STYLE_LIST_STYLE_IMAGE_NONE, eCSSUnit_Enumerated));
}
return PR_TRUE;
}
PRBool CSSParserImpl::ParseMargin(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration)
{
static const char* kBoxMarginSideNames[] = {
"margin-top",
"margin-right",
"margin-bottom",
"margin-left",
};
return ParseBoxProperties(aErrorCode, aDeclaration, kBoxMarginSideNames);
}
PRBool CSSParserImpl::ParsePadding(PRInt32* aErrorCode, nsICSSDeclaration* aDeclaration)
{
static const char* kBoxPaddingSideNames[] = {
"padding-top",
"padding-right",
"padding-bottom",
"padding-left",
};
return ParseBoxProperties(aErrorCode, aDeclaration, kBoxPaddingSideNames);
}
PRBool CSSParserImpl::ParseTextDecoration(PRInt32* aErrorCode,
nsICSSDeclaration* aDeclaration,
const char* aName)
{
static PRInt32 kTextDecorationNoneKTable[] = {
KEYWORD_NONE, NS_STYLE_TEXT_DECORATION_NONE,
-1
};
static PRInt32 kTextDecorationKTable[] = {
KEYWORD_UNDERLINE, NS_STYLE_TEXT_DECORATION_UNDERLINE,
KEYWORD_OVERLINE, NS_STYLE_TEXT_DECORATION_OVERLINE,
KEYWORD_LINE_THROUGH, NS_STYLE_TEXT_DECORATION_LINE_THROUGH,
KEYWORD_BLINK, NS_STYLE_TEXT_DECORATION_BLINK,
-1,
};
if (ParseEnum(aErrorCode, aDeclaration, aName, kTextDecorationNoneKTable)) {
return PR_TRUE;
}
PRInt32 decoration = 0;
for (int i = 0; i < 4; i++) {
nsString* ident = NextIdent(aErrorCode);
if (nsnull == ident) {
break;
}
char cbuf[50];
ident->ToCString(cbuf, sizeof(cbuf));
PRInt32 id = nsCSSKeywords::LookupName(cbuf);
PRInt32 ix = SearchKeywordTable(id, kTextDecorationKTable);
if (ix < 0) {
UngetToken();
break;
}
decoration |= kTextDecorationKTable[ix+1];
}
if (0 == decoration) {
return PR_FALSE;
}
aDeclaration->AppendValue(aName, nsCSSValue(decoration, eCSSUnit_Integer));
return PR_TRUE;
}
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