/*******************************************************************************
* Copyright (c) 2000, 2005 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.gef.examples.logicdesigner.edit;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Vector;
import org.eclipse.swt.accessibility.AccessibleControlEvent;
import org.eclipse.swt.accessibility.AccessibleEvent;
import org.eclipse.swt.graphics.Image;
import org.eclipse.draw2d.ConnectionAnchor;
import org.eclipse.draw2d.IFigure;
import org.eclipse.gef.AccessibleAnchorProvider;
import org.eclipse.gef.AccessibleEditPart;
import org.eclipse.gef.EditPolicy;
import org.eclipse.gef.examples.logicdesigner.LogicMessages;
import org.eclipse.gef.examples.logicdesigner.figures.FigureFactory;
import org.eclipse.gef.examples.logicdesigner.figures.LEDFigure;
import org.eclipse.gef.examples.logicdesigner.model.LED;
/**
* Holds the EditPart signifying an LED.
*/
public class LEDEditPart
extends LogicEditPart
{
private static Image LED_SEL_PRIM_BG;
private static Image LED_SEL_SECD_BG;
private static Image createImage(String name) {
InputStream stream = LEDFigure.class.getResourceAsStream(name);
Image image = new Image(null, stream);
try {
stream.close();
} catch (IOException ioe) {
}
return image;
}
protected AccessibleEditPart createAccessible() {
return new AccessibleGraphicalEditPart(){
public void getName(AccessibleEvent e) {
e.result = LogicMessages.LogicPlugin_Tool_CreationTool_LED_Label;
}
public void getValue(AccessibleControlEvent e) {
e.result = Integer.toString(getLEDModel().getValue());
}
};
}
protected void createEditPolicies(){
super.createEditPolicies();
installEditPolicy(EditPolicy.COMPONENT_ROLE, new LEDEditPolicy());
}
/**
* Returns a newly created Figure to represent this.
*
* @return Figure of this.
*/
protected IFigure createFigure() {
return FigureFactory.createNewLED();
}
public Object getAdapter(Class key) {
if (key == AccessibleAnchorProvider.class)
return new DefaultAccessibleAnchorProvider() {
public List getSourceAnchorLocations() {
List list = new ArrayList();
Vector sourceAnchors = getNodeFigure().getSourceConnectionAnchors();
for (int i=0; i<sourceAnchors.size(); i++) {
ConnectionAnchor anchor = (ConnectionAnchor)sourceAnchors.get(i);
list.add(anchor.getReferencePoint().getTranslated(0, -3));
}
return list;
}
public List getTargetAnchorLocations() {
List list = new ArrayList();
Vector targetAnchors = getNodeFigure().getTargetConnectionAnchors();
for (int i=0; i<targetAnchors.size(); i++) {
ConnectionAnchor anchor = (ConnectionAnchor)targetAnchors.get(i);
list.add(anchor.getReferencePoint().getTranslated(0, 3));
}
return list;
}
};
return super.getAdapter(key);
}
protected Image getBackgroundImage(int state){
if (state == SELECTED_PRIMARY){
if(LED_SEL_PRIM_BG == null)
LED_SEL_PRIM_BG = createImage("icons/ledbgprim.gif"); //$NON-NLS-1$
return LED_SEL_PRIM_BG;
}
if (state == SELECTED){
if(LED_SEL_SECD_BG == null)
LED_SEL_SECD_BG = createImage("icons/ledbgsel.gif"); //$NON-NLS-1$
return LED_SEL_SECD_BG;
}
return null;
}
/**
* Returns the Figure of this as a LEDFigure.
*
* @return LEDFigure of this.
*/
public LEDFigure getLEDFigure() {
return (LEDFigure)getFigure();
}
/**
* Returns the model of this as a LED.
*
* @return Model of this as an LED.
*/
protected LED getLEDModel() {
return (LED)getModel();
}
public void propertyChange(java.beans.PropertyChangeEvent change){
if (change.getPropertyName().equals(LED.P_VALUE))
refreshVisuals();
else
super.propertyChange(change);
}
/**
* Apart from the usual visual update, it also
* updates the numeric contents of the LED.
*/
public void refreshVisuals() {
getLEDFigure().setValue(getLEDModel().getValue());
super.refreshVisuals();
}
public void setSelected(int i){
super.setSelected(i);
refreshVisuals();
}
}