com.bonevich.erj.xml
Class SVGReader

java.lang.Object
  |
  +--org.xml.sax.helpers.DefaultHandler
        |
        +--com.bonevich.erj.xml.SVGReader

All Implemented Interfaces:

org.xml.sax.ContentHandler, org.xml.sax.DTDHandler, org.xml.sax.EntityResolver, org.xml.sax.ErrorHandler

public class SVGReader

extends org.xml.sax.helpers.DefaultHandler

Field Summary

protected org.tigris.gef.base.Diagram	_diagram
protected java.util.HashMap	_figRegistry
protected int	_nestedGroups
protected java.util.HashMap	_ownerRegistry

Constructor Summary

protected

SVGReader() We are a Singleton Pattern, so the default constructor is not publicly available.

Method Summary

void	characters(char[] ch, int start, int length)
protected java.awt.Color	colorByName(java.lang.String name, java.awt.Color defaultColor)
void	endElement(java.lang.String namespace, java.lang.String localName, java.lang.String qualifiedName)
protected org.tigris.gef.presentation.Fig	findFig(java.lang.String uri)
protected java.lang.Object	findOwner(java.lang.String uri)
static SVGReader	getInstance() Singleton instance accessor.
protected org.tigris.gef.presentation.FigCircle	handleEllipse(org.xml.sax.Attributes attrs)
protected org.tigris.gef.presentation.Fig	handleGroup(org.xml.sax.Attributes attrs) Returns Fig rather than FigGroups because this is also used for FigEdges.
protected org.tigris.gef.presentation.FigLine	handleLine(org.xml.sax.Attributes attrs)
protected org.tigris.gef.presentation.FigPoly	handlePath(org.xml.sax.Attributes attrs)
protected org.tigris.gef.presentation.Fig	handlePolyLine(org.xml.sax.Attributes attrs)
protected org.tigris.gef.presentation.FigRect	handleRect(org.xml.sax.Attributes attrs)
protected void	handleSVG(org.xml.sax.Attributes attrs)
protected org.tigris.gef.presentation.FigText	handleText(org.xml.sax.Attributes attrs)
protected void	initDiagram(java.lang.String descriptor) Instantiate and initialize a diagram given a descriptor.
protected void	lineStateStartElement(java.lang.String tagName, org.xml.sax.Attributes attrs)
protected java.awt.Color	parseColor(java.lang.String name, java.awt.Color defaultColor)
protected java.lang.String	parseStyle(java.lang.String field, java.lang.String style) This method parses the 'style' attribute for a particular field
org.tigris.gef.base.Diagram	readDiagram(org.xml.sax.InputSource source) Read a diagram given an SVG InputSource.
org.tigris.gef.base.Diagram	readDiagram(java.io.InputStream is) Read a diagram given an InputStream on the SVG source.
org.tigris.gef.base.Diagram	readDiagram(java.net.URL url) Read a diagram given an URL to an SVG source.
org.xml.sax.InputSource	resolveEntity(java.lang.String publicId, java.lang.String systemId)
protected void	setAttrs(org.tigris.gef.presentation.Fig f, org.xml.sax.Attributes attrs)
protected void	setOwnerAttr(org.tigris.gef.presentation.Fig f, org.xml.sax.Attributes attrs)
void	setOwnerRegistry(java.util.HashMap owners) Initialize the mapping of Fig owner Ids to Fig owner instances.
void	startElement(java.lang.String namespace, java.lang.String localName, java.lang.String qualifiedName, org.xml.sax.Attributes attrs)
protected java.lang.String	translateClassName(java.lang.String oldName) Translate a given class name into another???

Methods inherited from class org.xml.sax.helpers.DefaultHandler

endDocument, endPrefixMapping, error, fatalError, ignorableWhitespace, notationDecl, processingInstruction, setDocumentLocator, skippedEntity, startDocument, startPrefixMapping, unparsedEntityDecl, warning

Methods inherited from class java.lang.Object

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

Field Detail

_diagram

protected org.tigris.gef.base.Diagram _diagram

_figRegistry

protected java.util.HashMap _figRegistry

_ownerRegistry

protected java.util.HashMap _ownerRegistry

_nestedGroups

protected int _nestedGroups

Constructor Detail

SVGReader

protected SVGReader()

We are a Singleton Pattern, so the default constructor is not publicly available.

Method Detail

getInstance

public static SVGReader getInstance()

Singleton instance accessor.

setOwnerRegistry

public void setOwnerRegistry(java.util.HashMap owners)

Initialize the mapping of Fig owner Ids to Fig owner instances.

readDiagram

public org.tigris.gef.base.Diagram readDiagram(java.io.InputStream is)
                                        throws java.io.IOException

Read a diagram given an InputStream on the SVG source. Note: does not close the stream after reading.

java.io.IOException

readDiagram

public org.tigris.gef.base.Diagram readDiagram(org.xml.sax.InputSource source)
                                        throws java.io.IOException

Read a diagram given an SVG InputSource.

java.io.IOException

readDiagram

public org.tigris.gef.base.Diagram readDiagram(java.net.URL url)
                                        throws java.io.IOException

Read a diagram given an URL to an SVG source.

java.io.IOException

initDiagram

protected void initDiagram(java.lang.String descriptor)

Instantiate and initialize a diagram given a descriptor. The descriptor is of the form "{{diagramClassName}}[|{{ownerInstanceId}}]"

startElement

public void startElement(java.lang.String namespace,
                         java.lang.String localName,
                         java.lang.String qualifiedName,
                         org.xml.sax.Attributes attrs)

Specified by:

startElement in interface org.xml.sax.ContentHandler

Overrides:

startElement in class org.xml.sax.helpers.DefaultHandler

characters

public void characters(char[] ch,
                       int start,
                       int length)

Specified by:

characters in interface org.xml.sax.ContentHandler

Overrides:

characters in class org.xml.sax.helpers.DefaultHandler

endElement

public void endElement(java.lang.String namespace,
                       java.lang.String localName,
                       java.lang.String qualifiedName)

Specified by:

endElement in interface org.xml.sax.ContentHandler

Overrides:

endElement in class org.xml.sax.helpers.DefaultHandler

resolveEntity

public org.xml.sax.InputSource resolveEntity(java.lang.String publicId,
                                             java.lang.String systemId)

Specified by:

resolveEntity in interface org.xml.sax.EntityResolver

Overrides:

resolveEntity in class org.xml.sax.helpers.DefaultHandler

handleSVG

protected void handleSVG(org.xml.sax.Attributes attrs)

handleEllipse

protected org.tigris.gef.presentation.FigCircle handleEllipse(org.xml.sax.Attributes attrs)

handleGroup

protected org.tigris.gef.presentation.Fig handleGroup(org.xml.sax.Attributes attrs)

Returns Fig rather than FigGroups because this is also used for FigEdges.

handlePolyLine

protected org.tigris.gef.presentation.Fig handlePolyLine(org.xml.sax.Attributes attrs)

handleLine

protected org.tigris.gef.presentation.FigLine handleLine(org.xml.sax.Attributes attrs)

handlePath

protected org.tigris.gef.presentation.FigPoly handlePath(org.xml.sax.Attributes attrs)

handleRect

protected org.tigris.gef.presentation.FigRect handleRect(org.xml.sax.Attributes attrs)

handleText

protected org.tigris.gef.presentation.FigText handleText(org.xml.sax.Attributes attrs)

lineStateStartElement

protected void lineStateStartElement(java.lang.String tagName,
                                     org.xml.sax.Attributes attrs)

setAttrs

protected void setAttrs(org.tigris.gef.presentation.Fig f,
                        org.xml.sax.Attributes attrs)

setOwnerAttr

protected void setOwnerAttr(org.tigris.gef.presentation.Fig f,
                            org.xml.sax.Attributes attrs)

findFig

protected org.tigris.gef.presentation.Fig findFig(java.lang.String uri)

findOwner

protected java.lang.Object findOwner(java.lang.String uri)

translateClassName

protected java.lang.String translateClassName(java.lang.String oldName)

Translate a given class name into another???

parseColor

protected java.awt.Color parseColor(java.lang.String name,
                                    java.awt.Color defaultColor)

colorByName

protected java.awt.Color colorByName(java.lang.String name,
                                     java.awt.Color defaultColor)

parseStyle

protected java.lang.String parseStyle(java.lang.String field,
                                      java.lang.String style)

This method parses the 'style' attribute for a particular field

Parameters:

field - java.lang.String

style - java.lang.String

Returns:

java.lang.String