org.eclipse.wb.internal.swing.customize.CustomizerSupport.java Source code

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Here is the source code for org.eclipse.wb.internal.swing.customize.CustomizerSupport.java

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/*******************************************************************************
 * Copyright (c) 2011 Google, Inc.
 * 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:
 *    Google, Inc. - initial API and implementation
 *******************************************************************************/
package org.eclipse.wb.internal.swing.customize;

import org.eclipse.wb.core.editor.IContextMenuConstants;
import org.eclipse.wb.core.model.IJavaInfoInitializationParticipator;
import org.eclipse.wb.core.model.JavaInfo;
import org.eclipse.wb.core.model.ObjectInfo;
import org.eclipse.wb.core.model.broadcast.ObjectEventListener;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IContributionManager;
import org.eclipse.jface.action.IMenuManager;

import java.beans.BeanDescriptor;
import java.beans.Customizer;
import java.util.List;

/**
 * Contributes {@link Action} for customizing object using {@link Customizer}.
 * 
 * @author lobas_av
 * @coverage swing.customize
 */
public final class CustomizerSupport implements IJavaInfoInitializationParticipator {
    ////////////////////////////////////////////////////////////////////////////
    //
    // IJavaInfoInitializationParticipator
    //
    ////////////////////////////////////////////////////////////////////////////
    public void process(final JavaInfo javaInfo) throws Exception {
        final Class<Customizer> customizerClass = getCustomizerClass(javaInfo);
        if (customizerClass != null) {
            javaInfo.addBroadcastListener(new ObjectEventListener() {
                @Override
                public void addContextMenu(List<? extends ObjectInfo> objects, ObjectInfo object,
                        IMenuManager manager) throws Exception {
                    if (javaInfo == object && objects.size() == 1) {
                        contribute(javaInfo, manager, customizerClass);
                    }
                }
            });
        }
    }

    ////////////////////////////////////////////////////////////////////////////
    //
    // Bean utils
    //
    ////////////////////////////////////////////////////////////////////////////
    /**
     * @return the {@link Customizer} class, explicit for bean, of inherited from super class.
     */
    @SuppressWarnings("unchecked")
    private static Class<Customizer> getCustomizerClass(JavaInfo javaInfo) throws Exception {
        BeanDescriptor beanDescriptor = javaInfo.getDescription().getBeanDescriptor();
        if (beanDescriptor != null) {
            Class<?> customizerClass = beanDescriptor.getCustomizerClass();
            if (customizerClass != null && Customizer.class.isAssignableFrom(customizerClass)) {
                return (Class<Customizer>) customizerClass;
            }
        }
        return null;
    }

    ////////////////////////////////////////////////////////////////////////////
    //
    // Contribution
    //
    ////////////////////////////////////////////////////////////////////////////
    /**
     * Contribute "Customize" action.
     */
    private static void contribute(JavaInfo javaInfo, IContributionManager manager,
            Class<Customizer> customizerClass) {
        CustomizerAction action = new CustomizerAction(javaInfo, customizerClass);
        manager.appendToGroup(IContextMenuConstants.GROUP_ADDITIONAL, action);
    }
}