Class JSVGCanvas.CanvasUserAgent

java.lang.Object

org.apache.batik.swing.svg.JSVGComponent.BridgeUserAgent

org.apache.batik.swing.JSVGCanvas.CanvasUserAgent

All Implemented Interfaces:

UserAgent, XMLConstants

Enclosing class:

JSVGCanvas

protected class JSVGCanvas.CanvasUserAgent
extends JSVGComponent.BridgeUserAgent
implements XMLConstants

The CanvasUserAgent only adds tooltips to the behavior of the default BridgeUserAgent. A tooltip will be displayed wheneven the mouse lingers over an element which has a <title> or a <desc> child element.

Field Summary

Fields inherited from class JSVGComponent.BridgeUserAgent

extensions

Fields inherited from interface XMLConstants

XLINK_HREF_ATTRIBUTE, XLINK_HREF_QNAME, XLINK_NAMESPACE_URI, XLINK_PREFIX, XML_BASE_ATTRIBUTE, XML_BASE_QNAME, XML_CDATA_END, XML_CHAR_AMP, XML_CHAR_APOS, XML_CHAR_GT, XML_CHAR_LT, XML_CHAR_QUOT, XML_CHAR_REF_PREFIX, XML_CHAR_REF_SUFFIX, XML_CLOSE_TAG_END, XML_CLOSE_TAG_START, XML_DEFAULT_VALUE, XML_DOUBLE_DASH, XML_DOUBLE_QUOTE, XML_ENTITY_AMP, XML_ENTITY_APOS, XML_ENTITY_GT, XML_ENTITY_LT, XML_ENTITY_QUOT, XML_EQUAL_QUOT, XML_EQUAL_SIGN, XML_EVENTS_EVENT_ATTRIBUTE, XML_EVENTS_NAMESPACE_URI, XML_ID_ATTRIBUTE, XML_ID_QNAME, XML_LANG_ATTRIBUTE, XML_LANG_QNAME, XML_NAMESPACE_URI, XML_OPEN_TAG_END_CHILDREN, XML_OPEN_TAG_END_NO_CHILDREN, XML_OPEN_TAG_START, XML_PREFIX, XML_PRESERVE_VALUE, XML_PROCESSING_INSTRUCTION_END, XML_SPACE, XML_SPACE_ATTRIBUTE, XML_SPACE_QNAME, XML_TAB, XML_VERSION_10, XML_VERSION_11, XMLNS_NAMESPACE_URI, XMLNS_PREFIX

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	CanvasUserAgent()

Method Summary

Modifier and Type	Method	Description
void	displayError(Exception ex)	Displays an error resulting from the specified Exception.
void	displayError(String message)	Displays an error message in the User Agent interface.
Element	getPeerWithTag(Element parent, String nameSpaceURI, String localName)	Checks if there is a peer element of a given type.
void	handleElement(Element elt, Object data)	The handleElement method builds a tool tip from the content of a <title> element, a <desc> element or both.
boolean	hasPeerWithTag(Element elt, String nameSpaceURI, String localName)	Returns a boolean defining whether or not there is a peer of elt with the given qualified tag.
void	removeToolTip(Element elt)
protected void	replace(StringBuffer sb, char c, String r)
void	setToolTip(Element elt, String toolTip)	Sets the tool tip on the input element.
String	toFormattedHTML(String str)	Converts line breaks to HTML breaks and encodes special entities.

Methods inherited from class JSVGComponent.BridgeUserAgent

checkLoadExternalResource, checkLoadScript, deselectAll, displayMessage, fireLinkActivatedEvent, getAlternateStyleSheet, getBolderFontWeight, getBrokenLinkDocument, getClientAreaLocationOnScreen, getDefaultFontFamily, getEventDispatcher, getExternalResourceSecurity, getFontFamilyResolver, getLanguages, getLighterFontWeight, getMedia, getMediumFontSize, getPixelToMM, getPixelUnitToMillimeter, getScriptSecurity, getSourceResolution, getTransform, getUserStyleSheetURI, getViewportSize, getXMLParserClassName, hasFeature, isXMLParserValidating, loadDocument, openLink, registerExtension, setSourceResolution, setSVGCursor, setTextSelection, setTransform, showAlert, showConfirm, showPrompt, showPrompt, supportExtension

Methods inherited from class Object

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

Constructor Details

CanvasUserAgent

protected CanvasUserAgent()

Method Details

handleElement

public void handleElement(Element elt,
 Object data)

The handleElement method builds a tool tip from the content of a <title> element, a <desc> element or both.
Because these elements can appear in any order, here is the algorithm used to build the tool tip:

• If a <title> is passed to handleElement the method checks if there is a >desc> peer. If there is one, nothing is done (because the desc will do it). If there in none, the tool tip is set to the value of the <title> element content.
• If a <desc> is passed to handleElement the method checks if there is a <title> peer. If there is one, the content of that peer is pre-pended to the content of the <desc> element.

Specified by:

handleElement in interface UserAgent

Overrides:

handleElement in class JSVGComponent.BridgeUserAgent

toFormattedHTML

public String toFormattedHTML(String str)

Converts line breaks to HTML breaks and encodes special entities. Poor way of replacing '<', '>' and '&' in content.

replace

protected void replace(StringBuffer sb,
 char c,
 String r)

getPeerWithTag

public Element getPeerWithTag(Element parent,
 String nameSpaceURI,
 String localName)

Checks if there is a peer element of a given type. This returns the first occurence of the given type or null if none is found.

hasPeerWithTag

public boolean hasPeerWithTag(Element elt,
 String nameSpaceURI,
 String localName)

Returns a boolean defining whether or not there is a peer of elt with the given qualified tag.

setToolTip

public void setToolTip(Element elt,
 String toolTip)

Sets the tool tip on the input element.

removeToolTip

public void removeToolTip(Element elt)

displayError

public void displayError(String message)

Displays an error message in the User Agent interface.

Overrides:

displayError in class JSVGComponent.BridgeUserAgent

displayError

public void displayError(Exception ex)

Displays an error resulting from the specified Exception.

Specified by:

displayError in interface UserAgent

Overrides:

displayError in class JSVGComponent.BridgeUserAgent