pjs/parser/htmlparser/public/nsIParserService.h

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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 Communicator client 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 ***** */
#ifndef nsIParserService_h__
#define nsIParserService_h__
#include "nsISupports.h"
#include "nsString.h"
#include "nsHTMLTags.h"
#include "nsIElementObserver.h"
class nsIParser;
class nsIParserNode;
#define NS_PARSERSERVICE_CONTRACTID "@mozilla.org/parser/parser-service;1"
// {90a92e37-abd6-441b-9b39-4064d98e1ede}
#define NS_IPARSERSERVICE_IID \
{ 0x90a92e37, 0xabd6, 0x441b, { 0x9b, 0x39, 0x40, 0x64, 0xd9, 0x8e, 0x1e, 0xde } }
// {78081E70-AD53-11d5-8498-0010A4E0C706}
#define NS_IOBSERVERENTRY_IID \
{ 0x78081e70, 0xad53, 0x11d5, { 0x84, 0x98, 0x00, 0x10, 0xa4, 0xe0, 0xc7, 0x06 } }
class nsIObserverEntry : public nsISupports {
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IOBSERVERENTRY_IID)
NS_IMETHOD Notify(nsIParserNode* aNode,
nsIParser* aParser,
nsISupports* aWebShell,
const PRUint32 aFlags) = 0;
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsIObserverEntry, NS_IOBSERVERENTRY_IID)
class nsIParserService : public nsISupports {
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_IPARSERSERVICE_IID)
/**
* Looks up the nsHTMLTag enum value corresponding to the tag in aAtom. The
* lookup happens case insensitively.
*
* @param aAtom The tag to look up.
*
* @return PRInt32 The nsHTMLTag enum value corresponding to the tag in aAtom
* or eHTMLTag_userdefined if the tag does not correspond to
* any of the tag nsHTMLTag enum values.
*/
virtual PRInt32 HTMLAtomTagToId(nsIAtom* aAtom) const = 0;
/**
* Looks up the nsHTMLTag enum value corresponding to the tag in aAtom.
*
* @param aAtom The tag to look up.
*
* @return PRInt32 The nsHTMLTag enum value corresponding to the tag in aAtom
* or eHTMLTag_userdefined if the tag does not correspond to
* any of the tag nsHTMLTag enum values.
*/
virtual PRInt32 HTMLCaseSensitiveAtomTagToId(nsIAtom* aAtom) const = 0;
/**
* Looks up the nsHTMLTag enum value corresponding to the tag in aTag. The
* lookup happens case insensitively.
*
* @param aTag The tag to look up.
*
* @return PRInt32 The nsHTMLTag enum value corresponding to the tag in aTag
* or eHTMLTag_userdefined if the tag does not correspond to
* any of the tag nsHTMLTag enum values.
*/
virtual PRInt32 HTMLStringTagToId(const nsAString& aTag) const = 0;
/**
* Gets the tag corresponding to the nsHTMLTag enum value in aId. The
* returned tag will be in lowercase.
*
* @param aId The nsHTMLTag enum value to get the tag for.
*
* @return const PRUnichar* The tag corresponding to the nsHTMLTag enum
* value, or nsnull if the enum value doesn't
* correspond to a tag (eHTMLTag_unknown,
* eHTMLTag_userdefined, eHTMLTag_text, ...).
*/
virtual const PRUnichar *HTMLIdToStringTag(PRInt32 aId) const = 0;
/**
* Gets the tag corresponding to the nsHTMLTag enum value in aId. The
* returned tag will be in lowercase.
*
* @param aId The nsHTMLTag enum value to get the tag for.
*
* @return nsIAtom* The tag corresponding to the nsHTMLTag enum value, or
* nsnull if the enum value doesn't correspond to a tag
* (eHTMLTag_unknown, eHTMLTag_userdefined, eHTMLTag_text,
* ...).
*/
virtual nsIAtom *HTMLIdToAtomTag(PRInt32 aId) const = 0;
NS_IMETHOD HTMLConvertEntityToUnicode(const nsAString& aEntity,
PRInt32* aUnicode) const = 0;
NS_IMETHOD HTMLConvertUnicodeToEntity(PRInt32 aUnicode,
nsCString& aEntity) const = 0;
NS_IMETHOD IsContainer(PRInt32 aId, PRBool& aIsContainer) const = 0;
NS_IMETHOD IsBlock(PRInt32 aId, PRBool& aIsBlock) const = 0;
// Observer mechanism
NS_IMETHOD RegisterObserver(nsIElementObserver* aObserver,
const nsAString& aTopic,
const eHTMLTags* aTags = nsnull) = 0;
NS_IMETHOD UnregisterObserver(nsIElementObserver* aObserver,
const nsAString& aTopic) = 0;
NS_IMETHOD GetTopicObservers(const nsAString& aTopic,
nsIObserverEntry** aEntry) = 0;
virtual nsresult CheckQName(const nsASingleFragmentString& aQName,
PRBool aNamespaceAware,
const PRUnichar** aColon) = 0;
virtual PRBool IsXMLLetter(PRUnichar aChar) = 0;
virtual PRBool IsXMLNCNameChar(PRUnichar aChar) = 0;
/**
* Decodes an entity into a UTF-16 character. If a ; is found between aStart
* and aEnd it will try to decode the entity and set aNext to point to the
* character after the ;. The resulting UTF-16 character will be written in
* aResult, so if the entity is a valid numeric entity there needs to be
* space for at least two PRUnichars.
*
* @param aStart pointer to the character after the ampersand.
* @param aEnd pointer to the position after the last character of the
* string.
* @param aNext [out] will be set to the character after the ; or null if
* the decoding was unsuccessful.
* @param aResult the buffer to write the resulting UTF-16 character in.
* @return the number of PRUnichars written to aResult.
*/
virtual PRUint32 DecodeEntity(const PRUnichar* aStart, const PRUnichar* aEnd,
const PRUnichar** aNext,
PRUnichar* aResult) = 0;
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsIParserService, NS_IPARSERSERVICE_IID)
#endif // nsIParserService_h__