newflowcreationwizardpage.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.wizards;

import java.io.InputStream;

import net.orthanc.flow4j.designer.core.Flow4JPlugin;
import net.orthanc.flow4j.designer.ui.Flow4jPluginImages;
import net.orthanc.flow4j.model.bind.BindingHandler;
import net.orthanc.flow4j.model.bind.FlowModelBind;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.dialogs.WizardNewFileCreationPage;

/**
 * @author agreif
 *
 * TODO
 * 
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
public class NewFlowCreationWizardPage extends WizardNewFileCreationPage {

	private IPath newFilePath;

	/**
	 * TODO
	 * @param pageName
	 * @param selection
	 */
	public NewFlowCreationWizardPage(IStructuredSelection selection) {
		super(Flow4JPlugin.getResourceString("WizardPage_NewFlow.pageName"), selection); //$NON-NLS-1$
		setDescription(Flow4JPlugin.getResourceString("WizardPage_NewFlow.pageDescription")); //$NON-NLS-1$
		setImageDescriptor(Flow4jPluginImages.DESC_WIZBAN_NEWFLOW);
	}

	/**
	 * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
	 */
	public void createControl(Composite parent) {
		super.createControl(parent);
		this.setFileName(Flow4JPlugin.getResourceString("WizardPage_NewFlow.fileName")); //$NON-NLS-1$

		this.setPageComplete(this.validatePage());
	}


	/**
	 * @see org.eclipse.ui.dialogs.WizardNewFileCreationPage#createFileHandle(org.eclipse.core.runtime.IPath)
	 */
	protected IFile createFileHandle(IPath filePath) {
		newFilePath = filePath;
		return super.createFileHandle(filePath);
	}



	/**
	 * Returns the Input straeam to the serialized content of a new FlowModelBind object.
	 * Sets the default flow name to the flowFile name without the extension
	 * @see org.eclipse.ui.dialogs.WizardNewFileCreationPage#getInitialContents()
	 */
	protected InputStream getInitialContents() {
		try {
			String fileName = newFilePath.lastSegment();
			String flowName = fileName.substring(0, fileName.length()-newFilePath.getFileExtension().length()-1);
			FlowModelBind flowModelBind = new FlowModelBind(flowName);
			return BindingHandler.getInstance().saveFlowModel(flowModelBind);
		} catch (Exception e) {
			Flow4JPlugin.log(e);
			return null;
		}
	}

	/**
	 * TODO
	 * @return
	 */
	boolean finish() {
		IFile newFile = this.createNewFile();
		if (newFile == null)
			return false; // ie.- creation was unsuccessful


		// Since the flowFile resource was created fine, open it for editing
		// if requested by the user
		try {
			IWorkbenchWindow dwindow = Flow4JPlugin.getDefault().getWorkbench().getActiveWorkbenchWindow();
			if (dwindow != null) {
				IWorkbenchPage page = dwindow.getActivePage();
				if (page != null)
					page.openEditor(newFile);
			}
		} catch (org.eclipse.ui.PartInitException e) {
			Flow4JPlugin.log(e);
			return false;
		}

		return true;
	}

}