mirror of
https://github.com/mozilla/gecko-dev.git
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189 lines
7.9 KiB
C++
189 lines
7.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/* parsing of CSS stylesheets, based on a token stream from the CSS scanner */
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#ifndef nsICSSParser_h___
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#define nsICSSParser_h___
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#include "nsISupports.h"
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#include "nsAString.h"
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#include "nsCSSProperty.h"
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#include "nsColor.h"
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#include "nsCOMArray.h"
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class nsICSSStyleRule;
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class nsICSSStyleSheet;
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class nsIUnicharInputStream;
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class nsIURI;
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class nsCSSDeclaration;
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class nsICSSLoader;
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class nsICSSRule;
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class nsMediaList;
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class nsIPrincipal;
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struct nsCSSSelectorList;
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#define NS_ICSS_PARSER_IID \
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{ 0xad4a3778, 0xdae0, 0x4640, \
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{ 0xb2, 0x5a, 0x24, 0xff, 0x09, 0xc3, 0x70, 0xef } }
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// Rule processing function
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typedef void (* RuleAppendFunc) (nsICSSRule* aRule, void* aData);
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// Interface to the css parser.
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class nsICSSParser : public nsISupports {
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_ICSS_PARSER_IID)
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// Set a style sheet for the parser to fill in. The style sheet must
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// implement the nsICSSStyleSheet interface. Null can be passed in to clear
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// out an existing stylesheet reference.
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NS_IMETHOD SetStyleSheet(nsICSSStyleSheet* aSheet) = 0;
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// Set whether or not tags & classes are case sensitive or uppercased
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NS_IMETHOD SetCaseSensitive(PRBool aCaseSensitive) = 0;
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// Set whether or not to emulate Nav quirks
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NS_IMETHOD SetQuirkMode(PRBool aQuirkMode) = 0;
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#ifdef MOZ_SVG
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// Set whether or not we are in an SVG element
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NS_IMETHOD SetSVGMode(PRBool aSVGMode) = 0;
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#endif
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// Set loader to use for child sheets
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NS_IMETHOD SetChildLoader(nsICSSLoader* aChildLoader) = 0;
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/**
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* Parse aInput into the stylesheet that was previously set by calling
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* SetStyleSheet. Calling this method without calling SetStyleSheet first is
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* an error.
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*
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* @param aInput the data to parse
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* @param aSheetURL the URI to use as the sheet URI (for error reporting).
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* This must match the URI of the sheet passed to
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* SetStyleSheet.
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* @param aBaseURI the URI to use for relative URI resolution
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* @param aSheetPrincipal the principal of the stylesheet. This must match
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* the principal of the sheet passed to SetStyleSheet.
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* @param aLineNumber the line number of the first line of the sheet.
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* @param aAllowUnsafeRules see aEnableUnsafeRules in
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* nsICSSLoader::LoadSheetSync
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*/
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NS_IMETHOD Parse(nsIUnicharInputStream* aInput,
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nsIURI* aSheetURL,
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nsIURI* aBaseURI,
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nsIPrincipal* aSheetPrincipal,
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PRUint32 aLineNumber,
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PRBool aAllowUnsafeRules) = 0;
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// Parse HTML style attribute or its equivalent in other markup
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// languages. aBaseURL is the base url to use for relative links in
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// the declaration.
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NS_IMETHOD ParseStyleAttribute(const nsAString& aAttributeValue,
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nsIURI* aDocURL,
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nsIURI* aBaseURL,
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nsIPrincipal* aNodePrincipal,
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nsICSSStyleRule** aResult) = 0;
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NS_IMETHOD ParseAndAppendDeclaration(const nsAString& aBuffer,
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nsIURI* aSheetURL,
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nsIURI* aBaseURL,
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nsIPrincipal* aSheetPrincipal,
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nsCSSDeclaration* aDeclaration,
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PRBool aParseOnlyOneDecl,
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PRBool* aChanged,
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PRBool aClearOldDecl) = 0;
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NS_IMETHOD ParseRule(const nsAString& aRule,
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nsIURI* aSheetURL,
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nsIURI* aBaseURL,
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nsIPrincipal* aSheetPrincipal,
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nsCOMArray<nsICSSRule>& aResult) = 0;
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NS_IMETHOD ParseProperty(const nsCSSProperty aPropID,
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const nsAString& aPropValue,
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nsIURI* aSheetURL,
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nsIURI* aBaseURL,
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nsIPrincipal* aSheetPrincipal,
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nsCSSDeclaration* aDeclaration,
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PRBool* aChanged) = 0;
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/**
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* Parse aBuffer into a media list |aMediaList|, which must be
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* non-null, replacing its current contents. If aHTMLMode is true,
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* parse according to HTML rules, with commas as the most important
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* delimiter. Otherwise, parse according to CSS rules, with
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* parentheses and strings more important than commas.
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*/
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NS_IMETHOD ParseMediaList(const nsSubstring& aBuffer,
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nsIURI* aURL, // for error reporting
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PRUint32 aLineNumber, // for error reporting
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nsMediaList* aMediaList,
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PRBool aHTMLMode) = 0;
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/**
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* Parse aBuffer into a nscolor |aColor|. The alpha component of the
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* resulting aColor may vary due to rgba()/hsla(). Will return
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* NS_ERROR_FAILURE if aBuffer is not a valid CSS color specification.
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*
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* Will also currently return NS_ERROR_FAILURE if it is not
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* self-contained (i.e. doesn't reference any external style state,
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* such as "initial" or "inherit").
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*/
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NS_IMETHOD ParseColorString(const nsSubstring& aBuffer,
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nsIURI* aURL, // for error reporting
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PRUint32 aLineNumber, // for error reporting
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nscolor* aColor) = 0;
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/**
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* Parse aBuffer into a selector list. On success, caller must
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* delete *aSelectorList when done with it.
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*/
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NS_IMETHOD ParseSelectorString(const nsSubstring& aSelectorString,
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nsIURI* aURL, // for error reporting
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PRUint32 aLineNumber, // for error reporting
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nsCSSSelectorList **aSelectorList) = 0;
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(nsICSSParser, NS_ICSS_PARSER_IID)
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nsresult
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NS_NewCSSParser(nsICSSParser** aInstancePtrResult);
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#endif /* nsICSSParser_h___ */
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