org.apache.batik.swing
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.

Fields inherited from class org.apache.batik.swing.svg.JSVGComponent.BridgeUserAgent

extensions

Fields inherited from interface org.apache.batik.util.XMLConstants

XLINK_NAMESPACE_URI, XLINK_PREFIX, 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_QUOTE, XML_ENTITY_AMP, XML_ENTITY_APOS, XML_ENTITY_GT, XML_ENTITY_LT, XML_ENTITY_QUOT, XML_EQUAL_QUOT, XML_EQUAL_SIGN, XML_LANG_ATTRIBUTE, XML_NAMESPACE_URI, XML_OPEN_TAG_END_CHILDREN, XML_OPEN_TAG_END_NO_CHILDREN, XML_OPEN_TAG_START, XML_PREFIX, XML_PRESERVE_VALUE, XML_SPACE, XML_SPACE_ATTRIBUTE, XML_TAB, XMLNS_NAMESPACE_URI, XMLNS_PREFIX

Constructor Summary

protected

JSVGCanvas.CanvasUserAgent()

Method Summary

void	displayError(java.lang.Exception ex) Displays an error resulting from the specified Exception.
void	displayError(java.lang.String message) Displays an error message in the User Agent interface.
Element	getPeerWithTag(Element elt, java.lang.String nameSpaceURI, java.lang.String localName) Checks if there is a peer element of a given type.
void	handleElement(Element elt, java.lang.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, java.lang.String nameSpaceURI, java.lang.String localName) Returns a boolean defining whether or not there is a peer of elt with the given qualified tag.
protected void	replace(java.lang.StringBuffer s, char c, java.lang.String r)
void	setToolTip(Element elt, java.lang.String toolTip) Sets the tool tip on the input element.
java.lang.String	toFormattedHTML(java.lang.String str) Converts line breaks to HTML breaks and encodes special entities.

Methods inherited from class org.apache.batik.swing.svg.JSVGComponent.BridgeUserAgent

checkLoadExternalResource, checkLoadScript, displayMessage, fireLinkActivatedEvent, getAlternateStyleSheet, getBolderFontWeight, getClientAreaLocationOnScreen, getEventDispatcher, getExternalResourceSecurity, getLanguages, getLighterFontWeight, getMedia, getMediumFontSize, getPixelToMM, getPixelUnitToMillimeter, getScriptSecurity, getTransform, getUserStyleSheetURI, getViewportSize, getXMLParserClassName, hasFeature, isXMLParserValidating, openLink, registerExtension, setSVGCursor, showAlert, showConfirm, showPrompt, showPrompt, supportExtension

Methods inherited from class java.lang.Object

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

Constructor Detail

JSVGCanvas.CanvasUserAgent

protected JSVGCanvas.CanvasUserAgent()

Method Detail

handleElement

public void handleElement(Element elt,
                          java.lang.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.

Overrides:

handleElement in class JSVGComponent.BridgeUserAgent

toFormattedHTML

public java.lang.String toFormattedHTML(java.lang.String str)

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

replace

protected void replace(java.lang.StringBuffer s,
                       char c,
                       java.lang.String r)

getPeerWithTag

public Element getPeerWithTag(Element elt,
                              java.lang.String nameSpaceURI,
                              java.lang.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,
                              java.lang.String nameSpaceURI,
                              java.lang.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,
                       java.lang.String toolTip)

Sets the tool tip on the input element.

displayError

public void displayError(java.lang.String message)

Displays an error message in the User Agent interface.

Overrides:

displayError in class JSVGComponent.BridgeUserAgent

displayError

public void displayError(java.lang.Exception ex)

Displays an error resulting from the specified Exception.

Overrides:

displayError in class JSVGComponent.BridgeUserAgent