gecko/layout/style/nsICSSParser.h

162 lines
6.5 KiB
C++

/* -*- 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):
*
* 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 ***** */
/* parsing of CSS stylesheets, based on a token stream from the CSS scanner */
#ifndef nsICSSParser_h___
#define nsICSSParser_h___
#include "nsISupports.h"
#include "nsAString.h"
#include "nsCSSProperty.h"
#include "nsColor.h"
#include "nsCOMArray.h"
class nsICSSStyleRule;
class nsICSSStyleSheet;
class nsIUnicharInputStream;
class nsIURI;
class nsCSSDeclaration;
class nsICSSLoader;
class nsICSSRule;
class nsMediaList;
#define NS_ICSS_PARSER_IID \
{ 0x2cb34728, 0x0f17, 0x4753, \
{0x8e, 0xad, 0xec, 0x73, 0xe5, 0x69, 0xcd, 0xcd} }
// Rule processing function
typedef void (*PR_CALLBACK RuleAppendFunc) (nsICSSRule* aRule, void* aData);
// Interface to the css parser.
class nsICSSParser : public nsISupports {
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_ICSS_PARSER_IID)
// Set a style sheet for the parser to fill in. The style sheet must
// implement the nsICSSStyleSheet interface
NS_IMETHOD SetStyleSheet(nsICSSStyleSheet* aSheet) = 0;
// Set whether or not tags & classes are case sensitive or uppercased
NS_IMETHOD SetCaseSensitive(PRBool aCaseSensitive) = 0;
// Set whether or not to emulate Nav quirks
NS_IMETHOD SetQuirkMode(PRBool aQuirkMode) = 0;
#ifdef MOZ_SVG
// Set whether or not we are in an SVG element
NS_IMETHOD SetSVGMode(PRBool aSVGMode) = 0;
#endif
// Set loader to use for child sheets
NS_IMETHOD SetChildLoader(nsICSSLoader* aChildLoader) = 0;
/**
* @param aAllowUnsafeRules see aEnableUnsafeRules in
* nsICSSLoader::LoadSheetSync
*/
NS_IMETHOD Parse(nsIUnicharInputStream* aInput,
nsIURI* aSheetURL,
nsIURI* aBaseURI,
PRUint32 aLineNumber,
PRBool aAllowUnsafeRules,
nsICSSStyleSheet*& aResult) = 0;
// Parse HTML style attribute or its equivalent in other markup
// languages. aBaseURL is the base url to use for relative links in
// the declaration.
NS_IMETHOD ParseStyleAttribute(const nsAString& aAttributeValue,
nsIURI* aDocURL,
nsIURI* aBaseURL,
nsICSSStyleRule** aResult) = 0;
NS_IMETHOD ParseAndAppendDeclaration(const nsAString& aBuffer,
nsIURI* aSheetURL,
nsIURI* aBaseURL,
nsCSSDeclaration* aDeclaration,
PRBool aParseOnlyOneDecl,
PRBool* aChanged,
PRBool aClearOldDecl) = 0;
NS_IMETHOD ParseRule(const nsAString& aRule,
nsIURI* aSheetURL,
nsIURI* aBaseURL,
nsCOMArray<nsICSSRule>& aResult) = 0;
NS_IMETHOD ParseProperty(const nsCSSProperty aPropID,
const nsAString& aPropValue,
nsIURI* aSheetURL,
nsIURI* aBaseURL,
nsCSSDeclaration* aDeclaration,
PRBool* aChanged) = 0;
/**
* Parse aBuffer into a media list |aMediaList|, which must be
* non-null, replacing its current contents. If aHTMLMode is true,
* parse according to HTML rules, with commas as the most important
* delimiter. Otherwise, parse according to CSS rules, with
* parentheses and strings more important than commas.
*/
NS_IMETHOD ParseMediaList(const nsSubstring& aBuffer,
nsIURI* aURL, // for error reporting
PRUint32 aLineNumber, // for error reporting
nsMediaList* aMediaList,
PRBool aHTMLMode) = 0;
/**
* Parse aBuffer into a nscolor |aColor|. If aHandleAlphaColors is
* set, handle rgba()/hsla(). Will return NS_ERROR_FAILURE if
* aBuffer is not a valid CSS color specification.
*
* Will also currently return NS_ERROR_FAILURE if it is not
* self-contained (i.e. doesn't reference any external style state,
* such as "initial" or "inherit").
*/
NS_IMETHOD ParseColorString(const nsSubstring& aBuffer,
nsIURI* aURL, // for error reporting
PRUint32 aLineNumber, // for error reporting
PRBool aHandleAlphaColors,
nscolor* aColor) = 0;
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsICSSParser, NS_ICSS_PARSER_IID)
nsresult
NS_NewCSSParser(nsICSSParser** aInstancePtrResult);
#endif /* nsICSSParser_h___ */