flow4jresourcesview.java

一个java写的business process management系统

/*
 * Copyright (c) 2003, Alexander Greif
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Flow4J-Eclipse project nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

package net.orthanc.flow4j.designer.ui.views;

import net.orthanc.flow4j.designer.core.Flow4JPlugin;

import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jface.action.IMenuListener;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.ui.IWorkbenchPartSite;
import org.eclipse.ui.model.WorkbenchContentProvider;
import org.eclipse.ui.model.WorkbenchLabelProvider;
import org.eclipse.ui.part.ISetSelectionTarget;
import org.eclipse.ui.part.ViewPart;
import org.eclipse.ui.views.navigator.MainActionGroup;

/**
 * @author agreif
 *
 * TODO
 * 
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
public class Flow4JResourcesView extends ViewPart implements ISetSelectionTarget, IMenuListener {

	private TreeViewer treeViewer;
	private MainActionGroup mainActionGroup;

	/**
	 * TODO
	 * 
	 */
	public Flow4JResourcesView() {
		super();
		// TODO Auto-generated constructor stub
	}

	/**
	 * @see org.eclipse.ui.IWorkbenchPart#createPartControl(org.eclipse.swt.widgets.Composite)
	 */
	public void createPartControl(Composite parent) {
		treeViewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
		treeViewer.addFilter(new Flow4JResourcesViewerFilter());
		treeViewer.setContentProvider(new WorkbenchContentProvider());
		treeViewer.setLabelProvider(new WorkbenchLabelProvider());
		treeViewer.setInput(this.getInitialInput());
		treeViewer.addOpenListener(new Flow4JResourcesViewOpenListener(this));

		MenuManager menuMgr = new MenuManager("net.orthanc.flow4j.ui.PopupMenu"); //$NON-NLS-1$
		menuMgr.setRemoveAllWhenShown(true);
		menuMgr.addMenuListener(this);

		Menu fContextMenu = menuMgr.createContextMenu(treeViewer.getTree());
		treeViewer.getTree().setMenu(fContextMenu);

		// Register viewer with site. This must be done before making the actions.
		IWorkbenchPartSite site = this.getSite();
		site.registerContextMenu(menuMgr, treeViewer);
	}


	/**
	 * @see org.eclipse.ui.IWorkbenchPart#setFocus()
	 */
	public void setFocus() {
		treeViewer.getControl().setFocus();
	}


	/**
	 * TODO
	 * @return
	 */
	private Object getInitialInput() {
		IAdaptable input = this.getSite().getPage().getInput();
		IResource resource = null;
		if (input instanceof IResource) {
			resource = (IResource)input;
		} else {
			resource = (IResource)input.getAdapter(IResource.class);
		}

		if (resource != null) {
			int type = resource.getType();
			if (type == IResource.FILE)
				return resource.getParent();
			else if (type == IResource.FOLDER || type == IResource.PROJECT || type == IResource.ROOT)
				return resource;
		}
		return Flow4JPlugin.getWorkspace().getRoot();
	}

	/**
	 * @see org.eclipse.ui.part.ISetSelectionTarget#selectReveal(org.eclipse.jface.viewers.ISelection)
	 */
	public void selectReveal(ISelection selection) {
		treeViewer.setSelection(selection, true);
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.action.IMenuListener#menuAboutToShow(org.eclipse.jface.action.IMenuManager)
	 */
	public void menuAboutToShow(IMenuManager manager) {
		// TODO Auto-generated method stub

	}





}