org.archive.wayback.util.htmllex

Class ParseEventDelegator

java.lang.Object

org.archive.wayback.util.htmllex.ParseEventDelegator

All Implemented Interfaces:

ParseEventHandler

public class ParseEventDelegator
extends Object
implements ParseEventHandler

This class provides an abstraction between high-level SAX events, and application specific low-level SAX event handlers. Any object which wishes to receive any low-level SAX events is placed in the parserVisitors List, and at initialization of this class, each element in that list is given an opportunity to register to receive whatever low-level SAX events it is interested in. This class also manages casting of Node objects into more event-specific casts, and uses the ParseContext to route specific nodes to the registered handlers of each low-level event types. This class attempts to be efficient about targeting specific TagNodes: When registering to receive events, handlers can register for a specific tag name, or for the global-tag ("*") name. As TagNodes are handled, all tag-specific handlers are called, followed by all global-tag handlers.

Author:

brad

Field Summary

Fields

Modifier and Type	Field and Description
static String	WILDCARD_TAG_NAME

Constructor Summary

Constructors

Constructor and Description
ParseEventDelegator()

Method Summary

Methods

Modifier and Type	Method and Description
void	addCloseTagHandler(CloseTagHandler v)
void	addCloseTagHandler(CloseTagHandler v, String name)
void	addContentTextHandler(ContentTextHandler v)
void	addCSSTextHandler(CSSTextHandler v)
void	addJSTextHandler(JSTextHandler v)
void	addOpenTagHandler(OpenTagHandler v)
void	addOpenTagHandler(OpenTagHandler v, String name)
void	addParseCompleteHandler(ParseCompleteHandler v)
void	addParseStartHandler(ParseStartHandler v)
void	addRemarkTextHandler(RemarkTextHandler v)
List<ParseEventDelegatorVisitor>	getParserVisitors()
void	handleCloseTagNode(ParseContext context, org.htmlparser.nodes.TagNode node)
void	handleContentTextNode(ParseContext context, org.htmlparser.nodes.TextNode node)
void	handleCSSTextNode(ParseContext context, org.htmlparser.nodes.TextNode node)
void	handleJSTextNode(ParseContext context, org.htmlparser.nodes.TextNode node)
void	handleNode(ParseContext context, org.htmlparser.Node node)
void	handleOpenTagNode(ParseContext context, org.htmlparser.nodes.TagNode node)
void	handleParseComplete(ParseContext context)
void	handleParseStart(ParseContext context)
void	handleRemarkTextNode(ParseContext context, org.htmlparser.nodes.RemarkNode node)
void	init()
void	setParserVisitors(List<ParseEventDelegatorVisitor> parserVisitors)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

WILDCARD_TAG_NAME

public static final String WILDCARD_TAG_NAME

See Also:

Constant Field Values

Constructor Detail

ParseEventDelegator

public ParseEventDelegator()

Method Detail

init

public void init()

handleNode

public void handleNode(ParseContext context,
              org.htmlparser.Node node)
                throws IOException

Specified by:

handleNode in interface ParseEventHandler

Throws:

IOException

addCloseTagHandler

public void addCloseTagHandler(CloseTagHandler v)

addCloseTagHandler

public void addCloseTagHandler(CloseTagHandler v,
                      String name)

handleCloseTagNode

public void handleCloseTagNode(ParseContext context,
                      org.htmlparser.nodes.TagNode node)
                        throws IOException

Throws:

IOException

addOpenTagHandler

public void addOpenTagHandler(OpenTagHandler v)

addOpenTagHandler

public void addOpenTagHandler(OpenTagHandler v,
                     String name)

handleOpenTagNode

public void handleOpenTagNode(ParseContext context,
                     org.htmlparser.nodes.TagNode node)
                       throws IOException

Throws:

IOException

addCSSTextHandler

public void addCSSTextHandler(CSSTextHandler v)

handleCSSTextNode

public void handleCSSTextNode(ParseContext context,
                     org.htmlparser.nodes.TextNode node)
                       throws IOException

Throws:

IOException

addJSTextHandler

public void addJSTextHandler(JSTextHandler v)

handleJSTextNode

public void handleJSTextNode(ParseContext context,
                    org.htmlparser.nodes.TextNode node)
                      throws IOException

Throws:

IOException

addRemarkTextHandler

public void addRemarkTextHandler(RemarkTextHandler v)

handleRemarkTextNode

public void handleRemarkTextNode(ParseContext context,
                        org.htmlparser.nodes.RemarkNode node)
                          throws IOException

Throws:

IOException

addContentTextHandler

public void addContentTextHandler(ContentTextHandler v)

handleContentTextNode

public void handleContentTextNode(ParseContext context,
                         org.htmlparser.nodes.TextNode node)
                           throws IOException

Throws:

IOException

addParseCompleteHandler

public void addParseCompleteHandler(ParseCompleteHandler v)

handleParseComplete

public void handleParseComplete(ParseContext context)
                         throws IOException

Specified by:

handleParseComplete in interface ParseEventHandler

Throws:

IOException

addParseStartHandler

public void addParseStartHandler(ParseStartHandler v)

handleParseStart

public void handleParseStart(ParseContext context)
                      throws IOException

Specified by:

handleParseStart in interface ParseEventHandler

Throws:

IOException

getParserVisitors

public List<ParseEventDelegatorVisitor> getParserVisitors()

Returns:

the parserVisitors

setParserVisitors

public void setParserVisitors(List<ParseEventDelegatorVisitor> parserVisitors)

Parameters:

parserVisitors - the parserVisitors to set