net.xoetrope.optional.laf.synth
Class SynthClassLoader

java.lang.Object
  java.lang.ClassLoader
      net.xoetrope.optional.laf.synth.SynthClassLoader

public class SynthClassLoader
extends java.lang.ClassLoader

Used to locate project files. This classloader is used in the XEditorResourceManager and is initialised when a project is created or opened. It searches for files within the paths specified in the paths array.

Copyright: Copyright (c) Xoetrope Ltd., 1998-2003

$Revision: 1.6 $

Constructor Summary

SynthClassLoader()
Creates a new instance of SynthClassLoader

SynthClassLoader(java.lang.ClassLoader parent)
Creates a new instance of SynthClassLoader

Method Summary

java.lang.Class	findClass(java.lang.String name) Finds the names class.
protected void	generatePng(java.lang.String resName, java.lang.String sourceSvg, java.lang.String resPng, int width, int height) Generate a PNG from an SVG
java.net.URL	getResource(java.lang.String name) Finds the resource with the given name.
java.lang.Class	loadClass(java.lang.String name) Loads a class with the specified name.
java.lang.Class	loadStubClass(java.lang.String name) Loads a stub class to allow hooking of the classloader structure for synth resources
static void	setConvertClassName(java.lang.String className) Set the image conversion class name.
static void	setOverwriteImages(boolean overwrite) Set the over write flag.

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findLibrary, findLoadedClass, findResource, findResources, findSystemClass, getPackage, getPackages, getParent, getResourceAsStream, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

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

Constructor Detail

SynthClassLoader

public SynthClassLoader()

Creates a new instance of SynthClassLoader

SynthClassLoader

public SynthClassLoader(java.lang.ClassLoader parent)

Creates a new instance of SynthClassLoader

Parameters:

parent - the parent classloader

Method Detail

getResource

public java.net.URL getResource(java.lang.String name)

Finds the resource with the given name. Alters the loading of SVG images to return a URl for a generated GIF.

Overrides:

getResource in class java.lang.ClassLoader

Parameters:

name - the resource file name

Returns:

the URL of the resource if it has been located or null otherwise

loadStubClass

public java.lang.Class loadStubClass(java.lang.String name)
                              throws java.lang.ClassNotFoundException

Loads a stub class to allow hooking of the classloader structure for synth resources

Parameters:

name - the name of the stub class

Returns:

the stub class

Throws:

java.lang.ClassNotFoundException - cannot load the class

loadClass

public java.lang.Class loadClass(java.lang.String name)
                          throws java.lang.ClassNotFoundException

Loads a class with the specified name. Intercepts the loading of SVG files

Overrides:

loadClass in class java.lang.ClassLoader

Parameters:

name - the name of a class to load

Returns:

the new class

Throws:

java.lang.ClassNotFoundException - unable to load the class

findClass

public java.lang.Class findClass(java.lang.String name)
                          throws java.lang.ClassNotFoundException

Finds the names class. This method should only be invoked for loading of the stub class

Overrides:

findClass in class java.lang.ClassLoader

Parameters:

name - the name of the class

Returns:

the class

Throws:

java.lang.ClassNotFoundException - problems locating the class

generatePng

protected void generatePng(java.lang.String resName,
                           java.lang.String sourceSvg,
                           java.lang.String resPng,
                           int width,
                           int height)
                    throws java.lang.Exception

Generate a PNG from an SVG

Parameters:

resName - the bare resource name

sourceSvg -

resPng -

width -

height -

Throws:

java.lang.Exception

setConvertClassName

public static void setConvertClassName(java.lang.String className)

Set the image conversion class name. The class will be loaded by reflection

setOverwriteImages

public static void setOverwriteImages(boolean overwrite)

Set the over write flag. If true existing images will be overwritten each time the LAF loads

Parameters:

overwrite - true to overwrite existing images