File	Doc	Category	Size	Date	Package
SynthContext.java	API Doc	Java SE 5 API	5199	Fri Aug 26 14:58:12 BST 2005	javax.swing.plaf.synth

SynthContext

• java.lang.Object

Fields Summary
private static final Map	contextMap
private JComponent	component
private Region	region
private SynthStyle	style
private int	state

Constructors Summary
SynthContext()
public SynthContext(JComponent component, Region region, SynthStyle style, int state) Creates a SynthContext with the specified values. This is meant for subclasses and custom UI implementors. You very rarely need to construct a SynthContext, though some methods will take one. param component JComponent param region Identifies the portion of the JComponent param style Style associated with the component param state State of the component as defined in SynthConstants. throws NullPointerException if component, region of style is null. if (component == null || region == null || style == null) { throw new NullPointerException( "You must supply a non-null component, region and style"); } reset(component, region, style, state);

Methods Summary
void	dispose() this.component = null; this.style = null; releaseContext(this);
public javax.swing.JComponent	getComponent() Returns the hosting component containing the region. return Hosting Component return component;
public int	getComponentState() Returns the state of the widget, which is a bitmask of the values defined in SynthConstants. A region will at least be in one of ENABLED, MOUSE_OVER, PRESSED or DISABLED. see SynthConstants return State of Component return state;
static javax.swing.plaf.synth.SynthContext	getContext(java.lang.Class type, javax.swing.JComponent component, javax.swing.plaf.synth.Region region, javax.swing.plaf.synth.SynthStyle style, int state) contextMap = new HashMap(); SynthContext context = null; synchronized(contextMap) { java.util.List instances = (java.util.List)contextMap.get(type); if (instances != null) { int size = instances.size(); if (size > 0) { context = (SynthContext)instances.remove(size - 1); } } } if (context == null) { try { context = (SynthContext)type.newInstance(); } catch (IllegalAccessException iae) { } catch (InstantiationException ie) { } } context.reset(component, region, style, state); return context;
javax.swing.plaf.synth.SynthPainter	getPainter() Convenience method to get the Painter from the current SynthStyle. This will NEVER return null. SynthPainter painter = getStyle().getPainter(this); if (painter != null) { return painter; } return SynthPainter.NULL_PAINTER;
public javax.swing.plaf.synth.Region	getRegion() Returns the Region identifying this state. return Region of the hosting component return region;
public javax.swing.plaf.synth.SynthStyle	getStyle() Returns the style associated with this Region. return SynthStyle associated with the region. return style;
boolean	isSubregion() A convenience method for getRegion().isSubregion(). return getRegion().isSubregion();
static void	releaseContext(javax.swing.plaf.synth.SynthContext context) synchronized(contextMap) { java.util.List instances = (java.util.List)contextMap.get( context.getClass()); if (instances == null) { instances = new ArrayList(5); contextMap.put(context.getClass(), instances); } instances.add(context); }
void	reset(javax.swing.JComponent component, javax.swing.plaf.synth.Region region, javax.swing.plaf.synth.SynthStyle style, int state) Resets the state of the Context. this.component = component; this.region = region; this.style = style; this.state = state;
void	setComponentState(int state) this.state = state;
void	setStyle(javax.swing.plaf.synth.SynthStyle style) this.style = style;