javataskflowleteditpart.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.editparts;

import net.orthanc.flow4j.designer.core.Flow4JPlugin;
import net.orthanc.flow4j.designer.editparts.policies.TaskFlowletDirectEditPolicy;
import net.orthanc.flow4j.designer.figures.Flow4FigureFactory;
import net.orthanc.flow4j.designer.figures.JavaTaskFlowletFigure;
import net.orthanc.flow4j.designer.figures.JavaTaskFlowletToolTipFigure;
import net.orthanc.flow4j.designer.model.JavaTaskFlowletModelPart;
import net.orthanc.flow4j.designer.ui.editors.JarEntryEditorInput;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.draw2d.IFigure;
import org.eclipse.gef.EditPolicy;
import org.eclipse.gef.Request;
import org.eclipse.gef.RequestConstants;
import org.eclipse.jdt.core.search.IJavaSearchConstants;
import org.eclipse.jdt.core.search.IJavaSearchScope;
import org.eclipse.jdt.core.search.ITypeNameRequestor;
import org.eclipse.jdt.core.search.SearchEngine;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PartInitException;

/**
 * Edit part of a java task flowlet. 
 * @author agreif
 */
public class JavaTaskFlowletEditPart extends FlowletWithLabelEditPart 
{

	/**
	 * The toolTip figure that will be reused for flowlet figure creation.
	 */
	private JavaTaskFlowletToolTipFigure toolTip;

	/**
	 * Constructor.
	 * Sets the tooltip.
	 */
	public JavaTaskFlowletEditPart() {
		super();
		toolTip = new JavaTaskFlowletToolTipFigure(this);
	}






	/**
	 * @see org.eclipse.gef.editparts.AbstractEditPart#createEditPolicies()
	 */
	protected void createEditPolicies() {
		super.createEditPolicies();
		installEditPolicy(EditPolicy.DIRECT_EDIT_ROLE, new TaskFlowletDirectEditPolicy());
	}


	/**
	 * Creates the task flowlet figure and sets it's tool tip figure
	 * @see org.eclipse.gef.editparts.AbstractGraphicalEditPart#createFigure()
	 */
	protected IFigure createFigure() {
		if (getModel() == null)
			return null;
		IFigure figure = Flow4FigureFactory.createJavaTaskFlowletFigure();
		figure.setToolTip(toolTip);
		
		return figure;
	}

	/**
	 * Returns the Figure for this as an OutputFigure.
	 * @return  Figure of this as a OutputFigure.
	 */
	protected JavaTaskFlowletFigure getJavaTaskFlowletFigure() {
		return (JavaTaskFlowletFigure)getFigure();
	}

	/**
	 * Returns the model of this as a JavaTaskFlowletModelPart.
	 * @return  Model of this as a JavaTaskFlowletModelPart.
	 */
	protected JavaTaskFlowletModelPart getJavaTaskFlowlet() {
		return (JavaTaskFlowletModelPart)getModel();
	}







	/**
	 * Performs a direct edit on the Task Flowlet.
	 * Searches for the class's java source and opens it.
	 * If the java source is in a jar or zip archive,
	 * then its currently not handled.
	 */
	private void performDirectEdit() {
		String className = getJavaTaskFlowlet().getFlowletLabel().getText();
		try {
			new SearchEngine()
				.searchAllTypeNames(
					Flow4JPlugin.getWorkspace(),
					className.substring(0, className.lastIndexOf(".")).toCharArray(),
					className.substring(className.lastIndexOf(".") + 1).toCharArray(),
					IJavaSearchConstants.EXACT_MATCH,
					true,
					IJavaSearchConstants.CLASS,
					SearchEngine.createWorkspaceScope(),
					new ITypeNameRequestor() {
				public void acceptClass(
					char[] packageName,
					char[] simpleTypeName,
					char[][] enclosingTypeNames,
					String pathStr) {
					int jarSepPos = pathStr.indexOf(IJavaSearchScope.JAR_FILE_ENTRY_SEPARATOR);
					IPath path = new Path(pathStr);
					IWorkbenchPage page = Flow4JPlugin.getActivePage();
					if (page != null)
						try {
							if (jarSepPos == -1) {
								IPath projectLocation = Flow4JPlugin.getJavaProject(path.segment(0)).getProject().getLocation();
								IPath location = projectLocation.append(path.removeFirstSegments(1));
								IFile file = Flow4JPlugin.getWorkspaceRoot().getFileForLocation(location);
								page.openEditor(file, Flow4JPlugin.getEditorID(pathStr), true);
/*	Peter Friese */				
//								IEditorInput input = (IEditorInput) file.getAdapter(IEditorInput.class);
//								page.openEditor(input, Flow4JPlugin.getEditorID(pathStr), true);
							} else {
								page.openEditor(new JarEntryEditorInput(pathStr), Flow4JPlugin.getEditorID(pathStr), true);
							}
						} catch (PartInitException e) {
							Flow4JPlugin.log("Exception while opening task java source: " + e.getMessage());
							//Flow4JPlugin.getActiveFlowEditor().getStatusLineManager().setErrorMessage("hallo");
						}
				}
				public void acceptInterface(
					char[] packageName,
					char[] simpleTypeName,
					char[][] enclosingTypeNames,
					String path) {
				}
			}, IJavaSearchConstants.WAIT_UNTIL_READY_TO_SEARCH, null);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * @see org.eclipse.gef.EditPart#performRequest(org.eclipse.gef.Request)
	 */
	public void performRequest(Request request) {
		if (request.getType() == RequestConstants.REQ_DIRECT_EDIT)
			performDirectEdit();
	}


}