Package org.htmlunit.cyberneko.filters

Class DefaultFilter

java.lang.Object

org.htmlunit.cyberneko.filters.DefaultFilter

All Implemented Interfaces:

HTMLComponent, XMLComponent, XMLDocumentFilter, XMLDocumentSource, XMLDocumentHandler

Direct Known Subclasses:

HTMLWriterFilter, NamespaceBinder

public class DefaultFilter
extends Object
implements XMLDocumentFilter, HTMLComponent

This class implements a filter that simply passes document events to the next handler. It can be used as a base class to simplify the development of new document filters.

Author:

Andy Clark

Constructor Summary

Constructors

Constructor	Description
DefaultFilter()

Method Summary

Modifier and Type	Method	Description
void	characters(XMLString text, Augmentations augs)	Characters.
void	comment(XMLString text, Augmentations augs)	Comment.
void	doctypeDecl(String root, String publicId, String systemId, Augmentations augs)	Doctype declaration.
void	emptyElement(QName element, XMLAttributes attributes, Augmentations augs)	Empty element.
void	endCDATA(Augmentations augs)	End CDATA section.
void	endDocument(Augmentations augs)	End document.
void	endElement(QName element, Augmentations augs)	End element.
XMLDocumentHandler	getDocumentHandler()	Returns the document handler.
XMLDocumentSource	getDocumentSource()
Boolean	getFeatureDefault(String featureId)	Returns the default state for a feature, or null if this component does not want to report a default value for this feature.
Object	getPropertyDefault(String propertyId)	Returns the default state for a property, or null if this component does not want to report a default value for this property.
String[]	getRecognizedFeatures()	Returns a list of feature identifiers that are recognized by this component.
String[]	getRecognizedProperties()	Returns a list of property identifiers that are recognized by this component.
protected static String[]	merge(String[] array1, String[] array2)	Utility method for merging string arrays for recognized features and recognized properties.
void	processingInstruction(String target, XMLString data, Augmentations augs)	Processing instruction.
void	reset(XMLComponentManager componentManager)	Resets the component.
void	setDocumentHandler(XMLDocumentHandler handler)	Sets the document handler.
void	setDocumentSource(XMLDocumentSource source)	Sets the document source.
void	setFeature(String featureId, boolean state)	Sets the state of a feature.
void	setProperty(String propertyId, Object value)	Sets the value of a property.
void	startCDATA(Augmentations augs)	Start CDATA section.
void	startDocument(XMLLocator locator, String encoding, NamespaceContext nscontext, Augmentations augs)	Start document.
void	startElement(QName element, XMLAttributes attributes, Augmentations augs)	Start element.
void	xmlDecl(String version, String encoding, String standalone, Augmentations augs)	XML declaration.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultFilter

public DefaultFilter()

Method Detail

setDocumentHandler

public void setDocumentHandler(XMLDocumentHandler handler)

Sets the document handler.

Specified by:

setDocumentHandler in interface XMLDocumentSource

Parameters:

handler - the new handler

getDocumentHandler

public XMLDocumentHandler getDocumentHandler()

Returns the document handler.

Specified by:

getDocumentHandler in interface XMLDocumentSource

Returns:

the document handler

setDocumentSource

public void setDocumentSource(XMLDocumentSource source)

Sets the document source.

Specified by:

setDocumentSource in interface XMLDocumentHandler

Parameters:

source - the new source

getDocumentSource

public XMLDocumentSource getDocumentSource()

Specified by:

getDocumentSource in interface XMLDocumentHandler

Returns:

the document source.

startDocument

public void startDocument(XMLLocator locator,
                          String encoding,
                          NamespaceContext nscontext,
                          Augmentations augs)
                   throws XNIException

Start document.

Specified by:

startDocument in interface XMLDocumentHandler

Parameters:

locator - The document locator, or null if the document location cannot be reported during the parsing of this document. However, it is strongly recommended that a locator be supplied that can at least report the system identifier of the document.

encoding - The auto-detected IANA encoding name of the entity stream. This value will be null in those situations where the entity encoding is not auto-detected (e.g. internal entities or a document entity that is parsed from a java.io.Reader).

nscontext - The namespace context in effect at the start of this document. This object represents the current context. Implementors of this class are responsible for copying the namespace bindings from the the current context (and its parent contexts) if that information is important.

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

xmlDecl

public void xmlDecl(String version,
                    String encoding,
                    String standalone,
                    Augmentations augs)
             throws XNIException

XML declaration.

Specified by:

xmlDecl in interface XMLDocumentHandler

Parameters:

version - The XML version.

encoding - The IANA encoding name of the document, or null if not specified.

standalone - The standalone value, or null if not specified.

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

doctypeDecl

public void doctypeDecl(String root,
                        String publicId,
                        String systemId,
                        Augmentations augs)
                 throws XNIException

Doctype declaration.

Specified by:

doctypeDecl in interface XMLDocumentHandler

Parameters:

root - The name of the root element.

publicId - The public identifier if an external DTD or null if the external DTD is specified using SYSTEM.

systemId - The system identifier if an external DTD, null otherwise.

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

comment

public void comment(XMLString text,
                    Augmentations augs)
             throws XNIException

Comment.

Specified by:

comment in interface XMLDocumentHandler

Parameters:

text - The text in the comment.

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by application to signal an error.

processingInstruction

public void processingInstruction(String target,
                                  XMLString data,
                                  Augmentations augs)
                           throws XNIException

Processing instruction.

Specified by:

processingInstruction in interface XMLDocumentHandler

Parameters:

target - The target.

data - The data or null if none specified.

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

startElement

public void startElement(QName element,
                         XMLAttributes attributes,
                         Augmentations augs)
                  throws XNIException

Start element.

Specified by:

startElement in interface XMLDocumentHandler

Parameters:

element - The name of the element.

attributes - The element attributes.

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

emptyElement

public void emptyElement(QName element,
                         XMLAttributes attributes,
                         Augmentations augs)
                  throws XNIException

Empty element.

Specified by:

emptyElement in interface XMLDocumentHandler

Parameters:

element - The name of the element.

attributes - The element attributes.

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

characters

public void characters(XMLString text,
                       Augmentations augs)
                throws XNIException

Characters.

Specified by:

characters in interface XMLDocumentHandler

Parameters:

text - The content.

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

startCDATA

public void startCDATA(Augmentations augs)
                throws XNIException

Start CDATA section.

Specified by:

startCDATA in interface XMLDocumentHandler

Parameters:

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

endCDATA

public void endCDATA(Augmentations augs)
              throws XNIException

End CDATA section.

Specified by:

endCDATA in interface XMLDocumentHandler

Parameters:

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

endElement

public void endElement(QName element,
                       Augmentations augs)
                throws XNIException

End element.

Specified by:

endElement in interface XMLDocumentHandler

Parameters:

element - The name of the element.

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

endDocument

public void endDocument(Augmentations augs)
                 throws XNIException

End document.

Specified by:

endDocument in interface XMLDocumentHandler

Parameters:

augs - Additional information that may include infoset augmentations

Throws:

XNIException - Thrown by handler to signal an error.

getRecognizedFeatures

public String[] getRecognizedFeatures()

Returns a list of feature identifiers that are recognized by this component. This method may return null if no features are recognized by this component.

Specified by:

getRecognizedFeatures in interface XMLComponent

Returns:

an array of feature identifiers that are recognized by this component. This method may return null if no features are recognized by this component.

getFeatureDefault

public Boolean getFeatureDefault(String featureId)

Returns the default state for a feature, or null if this component does not want to report a default value for this feature.

Specified by:

getFeatureDefault in interface HTMLComponent

Specified by:

getFeatureDefault in interface XMLComponent

Parameters:

featureId - The feature identifier.

Returns:

the default state for a feature, or null if this component does not want to report a default value for this feature.

getRecognizedProperties

public String[] getRecognizedProperties()

Returns a list of property identifiers that are recognized by this component. This method may return null if no properties are recognized by this component.

Specified by:

getRecognizedProperties in interface XMLComponent

Returns:

an array of property identifiers that are recognized by this component. This method may return null if no properties are recognized by this component.

getPropertyDefault

public Object getPropertyDefault(String propertyId)

Returns the default state for a property, or null if this component does not want to report a default value for this property.

Specified by:

getPropertyDefault in interface HTMLComponent

Specified by:

getPropertyDefault in interface XMLComponent

Parameters:

propertyId - The property identifier.

Returns:

the default state for a property, or null if this component does not want to report a default value for this property

reset

public void reset(XMLComponentManager componentManager)
           throws XMLConfigurationException

Resets the component. The component can query the component manager about any features and properties that affect the operation of the component.

Specified by:

reset in interface XMLComponent

Parameters:

componentManager - The component manager.

Throws:

XNIException - Thrown by component on initialization error.

XMLConfigurationException

setFeature

public void setFeature(String featureId,
                       boolean state)
                throws XMLConfigurationException

Sets the state of a feature. This method is called by the component manager any time after reset when a feature changes state.

Note: Components should silently ignore features that do not affect the operation of the component.

Specified by:

setFeature in interface XMLComponent

Parameters:

featureId - The feature identifier.

state - The state of the feature.

Throws:

XMLConfigurationException - Thrown for configuration error. In general, components should only throw this exception if it is really a critical error.

setProperty

public void setProperty(String propertyId,
                        Object value)
                 throws XMLConfigurationException

Sets the value of a property. This method is called by the component manager any time after reset when a property changes value.

Note: Components should silently ignore properties that do not affect the operation of the component.

Specified by:

setProperty in interface XMLComponent

Parameters:

propertyId - The property identifier.

value - The value of the property.

Throws:

XMLConfigurationException - Thrown for configuration error. In general, components should only throw this exception if it is really a critical error.

merge

protected static String[] merge(String[] array1,
                                String[] array2)

Utility method for merging string arrays for recognized features and recognized properties.

Parameters:

array1 - array1

array2 - array2

Returns:

the merged array