org.chaupal.jp2p.ui.jxta.container.JxseContainerNavigator.java Source code

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Here is the source code for org.chaupal.jp2p.ui.jxta.container.JxseContainerNavigator.java

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/*******************************************************************************
 * Copyright (c) 2014 Chaupal.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Apache License, Version 2.0
 * which accompanies this distribution, and is available at
 * http://www.apache.org/licenses/LICENSE-2.0.html
 *******************************************************************************/
package org.chaupal.jp2p.ui.jxta.container;

import net.jp2p.chaupal.utils.Utils;
import net.jp2p.container.component.IJp2pComponent;

import org.chaupal.jp2p.ui.container.Jp2pContainerNavigator;
import org.eclipse.jface.viewers.AbstractTreeViewer;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.ISelectionListener;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.navigator.CommonNavigator;
import org.eclipse.ui.navigator.CommonViewer;

public class JxseContainerNavigator extends CommonNavigator {

    public static final String PATH_ID = "org.chaupal.jp2p.ui.jxta.container";
    public static final String S_NAVIGATOR_TEXT = "JXTA Module: ";

    private CommonViewer viewer;

    //private JxseContainerNavigator navigator;

    private ISelectionListener listener = new ISelectionListener() {
        @Override
        public void selectionChanged(IWorkbenchPart sourcepart, ISelection selection) {
            // we deal with only our own selections
            if (!(sourcepart instanceof Jp2pContainerNavigator))
                return;
            showSelection(sourcepart, selection);
        }
    };

    public JxseContainerNavigator() {
        super();
        //navigator = this;
    }

    /**
     * Declare a new root (standard this is the workspace).
     * @see http://www.techjava.de/topics/2009/04/eclipse-common-navigator-framework/
     */
    @Override
    protected Object getInitialInput() {
        return null;
    }

    @Override
    public void createPartControl(Composite aParent) {
        getSite().setSelectionProvider(this.getCommonViewer());
        getSite().getWorkbenchWindow().getSelectionService().addSelectionListener(listener);

        super.createPartControl(aParent);
    }

    @Override
    protected CommonViewer createCommonViewer(Composite aParent) {
        this.viewer = super.createCommonViewer(aParent);
        //      this.viewer.setSorter( new Jp2pServiceViewerSorter() );
        this.viewer.setAutoExpandLevel(AbstractTreeViewer.ALL_LEVELS);
        return viewer;
    }

    /**
     * Shows the given selection in this view.
     */
    @SuppressWarnings("unchecked")
    void showSelection(IWorkbenchPart sourcepart, ISelection selection) {
        IStructuredSelection ss = (IStructuredSelection) selection;
        Object element = ss.getFirstElement();
        if ((element == null) || !(element instanceof IJp2pComponent<?>))
            return;
        IJp2pComponent<?> component = (IJp2pComponent<Object>) element;
        setContentDescription(S_NAVIGATOR_TEXT + Utils.getLabel(component));
        this.viewer.setInput(component);
    }

    /**
     * Refresh the property page
     */
    protected synchronized void refresh() {
        if (Display.getDefault().isDisposed())
            return;

        Display.getDefault().asyncExec(new Runnable() {
            @Override
            public void run() {
                viewer.refresh();
            }
        });
    }
}