gecko-dev/layout/style/nsICSSStyleRule.h

230 lines
7.9 KiB
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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):
* Daniel Glazman <glazman@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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 MPL, 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 MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsICSSStyleRule_h___
#define nsICSSStyleRule_h___
//#include <stdio.h>
#include "nsICSSRule.h"
#include "nsString.h"
#include "nsCOMPtr.h"
#include "nsCSSProps.h"
#include "nsCSSValue.h"
#include "nsIAtom.h"
class nsIAtom;
class nsCSSDeclaration;
class nsICSSStyleSheet;
struct nsAtomList {
public:
nsAtomList(nsIAtom* aAtom);
nsAtomList(const nsString& aAtomValue);
nsAtomList(const nsAtomList& aCopy);
~nsAtomList(void);
PRBool Equals(const nsAtomList* aOther) const;
nsCOMPtr<nsIAtom> mAtom;
nsAtomList* mNext;
};
struct nsAtomStringList {
public:
nsAtomStringList(nsIAtom* aAtom, const PRUnichar *aString = nsnull);
nsAtomStringList(const nsString& aAtomValue, const PRUnichar *aString = nsnull);
nsAtomStringList(const nsAtomStringList& aCopy);
~nsAtomStringList(void);
PRBool Equals(const nsAtomStringList* aOther) const;
nsCOMPtr<nsIAtom> mAtom;
PRUnichar* mString;
nsAtomStringList* mNext;
};
#define NS_ATTR_FUNC_SET 0 // [attr]
#define NS_ATTR_FUNC_EQUALS 1 // [attr=value]
#define NS_ATTR_FUNC_INCLUDES 2 // [attr~=value] (space separated)
#define NS_ATTR_FUNC_DASHMATCH 3 // [attr|=value] ('-' truncated)
#define NS_ATTR_FUNC_BEGINSMATCH 4 // [attr^=value] (begins with)
#define NS_ATTR_FUNC_ENDSMATCH 5 // [attr$=value] (ends with)
#define NS_ATTR_FUNC_CONTAINSMATCH 6 // [attr*=value] (contains substring)
struct nsAttrSelector {
public:
nsAttrSelector(PRInt32 aNameSpace, const nsString& aAttr);
nsAttrSelector(PRInt32 aNameSpace, const nsString& aAttr, PRUint8 aFunction,
const nsString& aValue, PRBool aCaseSensitive);
nsAttrSelector(const nsAttrSelector& aCopy);
~nsAttrSelector(void);
PRBool Equals(const nsAttrSelector* aOther) const;
PRInt32 mNameSpace;
nsIAtom* mAttr;
PRUint8 mFunction;
PRPackedBool mCaseSensitive;
nsString mValue;
nsAttrSelector* mNext;
};
struct nsCSSSelector {
public:
nsCSSSelector(void);
nsCSSSelector(const nsCSSSelector& aCopy);
~nsCSSSelector(void);
nsCSSSelector& operator=(const nsCSSSelector& aCopy);
PRBool Equals(const nsCSSSelector* aOther) const;
void Reset(void);
void SetNameSpace(PRInt32 aNameSpace);
void SetTag(const nsString& aTag);
void AddID(const nsString& aID);
void AddClass(const nsString& aClass);
void AddPseudoClass(const nsString& aPseudoClass, const PRUnichar* aString = nsnull);
void AddPseudoClass(nsIAtom* aPseudoClass, const PRUnichar* aString = nsnull);
void AddAttribute(PRInt32 aNameSpace, const nsString& aAttr);
void AddAttribute(PRInt32 aNameSpace, const nsString& aAttr, PRUint8 aFunc,
const nsString& aValue, PRBool aCaseSensitive);
void SetOperator(PRUnichar aOperator);
PRInt32 CalcWeight(void) const;
void ToString(nsAString& aString, nsICSSStyleSheet* aSheet,
PRBool aAppend = PR_FALSE) const;
private:
void AppendNegationToString(nsAString& aString);
void ToStringInternal(nsAString& aString, nsICSSStyleSheet* aSheet,
PRBool aIsPseudoElem,
PRBool aIsNegated) const;
public:
PRInt32 mNameSpace;
nsCOMPtr<nsIAtom> mTag;
nsAtomList* mIDList;
nsAtomList* mClassList;
nsAtomStringList* mPseudoClassList; // atom for the pseudo, string for
// the argument to functional pseudos
nsAttrSelector* mAttrList;
PRUnichar mOperator;
nsCSSSelector* mNegations;
nsCSSSelector* mNext;
};
/**
* A selector list is the unit of selectors that each style rule has.
* For example, "P B, H1 B { ... }" would be a selector list with two
* items (where each |nsCSSSelectorList| object's |mSelectors| has
* an |mNext| for the P or H1). We represent them as linked lists.
*/
struct nsCSSSelectorList {
nsCSSSelectorList(void);
~nsCSSSelectorList(void);
/**
* Push a copy of |aSelector| on to the beginning of |mSelectors|,
* setting its |mNext| to the current value of |mSelectors|.
*
* The caller is responsible for updating |mWeight|.
*/
void AddSelector(const nsCSSSelector& aSelector);
/**
* Should be used only on the first in the list
*/
void ToString(nsAString& aResult, nsICSSStyleSheet* aSheet);
/**
* Do a deep clone. Should be used only on the first in the list.
*/
nsCSSSelectorList* Clone();
nsCSSSelector* mSelectors;
PRInt32 mWeight;
nsCSSSelectorList* mNext;
};
// IID for the nsICSSStyleRule interface {00803ccc-66e8-4ec8-a037-45e901bb5304}
#define NS_ICSS_STYLE_RULE_IID \
{0x00803ccc, 0x66e8, 0x4ec8, {0xa0, 0x37, 0x45, 0xe9, 0x01, 0xbb, 0x53, 0x04}}
class nsICSSStyleRule : public nsICSSRule {
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_ICSS_STYLE_RULE_IID)
// null for style attribute
virtual nsCSSSelectorList* Selector(void) = 0;
virtual PRUint32 GetLineNumber(void) const = 0;
virtual void SetLineNumber(PRUint32 aLineNumber) = 0;
virtual nsCSSDeclaration* GetDeclaration(void) const = 0;
/**
* Return a new |nsIStyleRule| instance that replaces the current one,
* due to a change in the |nsCSSDeclaration|. Due to the
* |nsIStyleRule| contract of immutability, this must be called if the
* declaration is modified.
*
* |DeclarationChanged| handles replacing the object in the container
* sheet or group rule if |aHandleContainer| is true.
*/
virtual already_AddRefed<nsICSSStyleRule>
DeclarationChanged(PRBool aHandleContainer) = 0;
virtual already_AddRefed<nsIStyleRule> GetImportantRule(void) = 0;
// hooks for DOM rule
virtual nsresult GetCssText(nsAString& aCssText) = 0;
virtual nsresult SetCssText(const nsAString& aCssText) = 0;
virtual nsresult GetParentStyleSheet(nsICSSStyleSheet** aSheet) = 0;
virtual nsresult GetParentRule(nsICSSGroupRule** aParentRule) = 0;
virtual nsresult GetSelectorText(nsAString& aSelectorText) = 0;
virtual nsresult SetSelectorText(const nsAString& aSelectorText) = 0;
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsICSSStyleRule, NS_ICSS_STYLE_RULE_IID)
nsresult
NS_NewCSSStyleRule(nsICSSStyleRule** aInstancePtrResult,
nsCSSSelectorList* aSelector,
nsCSSDeclaration* aDeclaration);
#endif /* nsICSSStyleRule_h___ */