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/*******************************************************************************
* Copyright (c) 2006, 2010 Soyatec (http://www.soyatec.com) 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:
* Soyatec - initial API and implementation
*******************************************************************************/
package org.eclipse.papyrus.xwt.core;
import java.util.HashMap;
import org.eclipse.core.databinding.observable.IChangeListener;
import org.eclipse.papyrus.xwt.XWT;
import org.eclipse.papyrus.xwt.internal.utils.LoggerManager;
import org.eclipse.papyrus.xwt.internal.utils.UserData;
import org.eclipse.swt.widgets.Widget;
public abstract class TriggerBase {
public final static TriggerBase[] EMPTY_ARRAY = new TriggerBase[0];
protected TriggerAction[] entryActions;
protected TriggerAction[] exitActions;
public TriggerAction[] getEntryActions() {
if(entryActions == null) {
return TriggerAction.EMPTY_ARRAY;
}
return entryActions;
}
public void setEntryActions(TriggerAction[] entryActions) {
this.entryActions = entryActions;
}
public TriggerAction[] getExitActions() {
if(exitActions == null) {
return TriggerAction.EMPTY_ARRAY;
}
return exitActions;
}
public void setExitActions(TriggerAction[] exitActions) {
this.exitActions = exitActions;
}
public abstract void on(Object target);
public abstract void prepare(Object target);
abstract class AbstractChangeListener implements IChangeListener {
protected HashMap<SetterBase, Object> oldvalues = null;
protected Object element;
public AbstractChangeListener(Object element) {
this.element = element;
}
protected void restoreValues() {
if(oldvalues == null) {
return;
}
for(SetterBase setter : oldvalues.keySet()) {
setter.undo(element, oldvalues.get(setter));
}
}
}
public static Object getElementByName(Object target, String elementName) {
if(elementName != null && elementName.length() > 0) {
Widget widget = UserData.getWidget(target);
if(widget != null) {
Object element = XWT.findElementByName(widget, elementName);
if(element != null) {
return element;
}
LoggerManager.log("EventTrigger: Source \n" + elementName + "\n is not found in " + target.getClass().getName());
}
}
return target;
}
}
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