plugins/org.eclipse.epf.export.xml/src/org/eclipse/epf/export/xml/wizards/SelectXmlFilePage.java

//------------------------------------------------------------------------------
// Copyright (c) 2005, 2006 IBM Corporation and others.
// 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:
// IBM Corporation - initial implementation
//------------------------------------------------------------------------------
package org.eclipse.epf.export.xml.wizards;

import java.io.File;

import org.eclipse.epf.export.xml.XmlExportPlugin;
import org.eclipse.epf.export.xml.XmlExportResources;
import org.eclipse.jface.wizard.IWizardPage;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.events.FocusListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.FileDialog;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;

/**
 * A wizard page that prompts the user to select a directory that contains the
 * method plug-ins to import.
 * 
 * @author JJinhua Xi
 * @since 1.0
 */
public class SelectXmlFilePage extends WizardPage {

	public static final String PAGE_NAME = SelectXmlFilePage.class.getName();

	private Text ctrl_path;

	private String path;

	/**
	 * Creates a new instance.
	 */
	public SelectXmlFilePage() {
		super(PAGE_NAME);
		setTitle(XmlExportResources.selectDestinationPage_title); //$NON-NLS-1$
		setDescription(XmlExportResources.selectDestinationPage_desc); //$NON-NLS-1$
		setImageDescriptor(XmlExportPlugin.getDefault().getImageDescriptor(
				"full/wizban/ImportRPWLayout.gif")); //$NON-NLS-1$
	}

	public void createControl(Composite parent) {
		Composite container = new Composite(parent, SWT.NONE);
		GridLayout layout = new GridLayout();
		container.setLayout(layout);

		Group layoutGroup = new Group(container, SWT.None);
		layoutGroup.setLayout(new GridLayout(3, false));
		layoutGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
		layoutGroup.setText("Select xml file"); //$NON-NLS-1$

		Label fileLabel = new Label(layoutGroup, SWT.NONE);
		fileLabel.setText("File"); //$NON-NLS-1$

		ctrl_path = new Text(layoutGroup, SWT.BORDER);
		ctrl_path.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
		ctrl_path.addFocusListener(new FocusListener() {

			public void focusGained(FocusEvent e) {
				setPageComplete(isValidPath());
			}

			public void focusLost(FocusEvent e) {
				path = ctrl_path.getText();
				setPageComplete(isValidPath());
			}
		});

		Button browseButton = new Button(layoutGroup, SWT.PUSH);
		browseButton.setLayoutData(new GridData(GridData.END));
		browseButton.setText("Browse"); //$NON-NLS-1$
		browseButton.addSelectionListener(new SelectionAdapter() {
			public void widgetSelected(SelectionEvent e) {
				handleBrowse();
			}
		});

		setControl(container);

		setPageComplete(isValidPath());
	}

	private boolean isValidPath() {
		if (path == null || path.trim().length() == 0) {
			return false;
		}

		File f = new File(path);
		if (!f.exists()) {
			f.getParentFile().mkdirs();
			// f.createNewFile();
		}

		return true;
	}

	private void handleBrowse() {
		FileDialog fd = new FileDialog(Display.getCurrent().getActiveShell(),
				SWT.OPEN);
		fd.setFilterExtensions(new String[] { "*.xml", "*.*" }); //$NON-NLS-1$ //$NON-NLS-2$
		// fd.setFilterPath( getLayoutMgr().getLayoutRoot() );
		String path = fd.open();
		boolean ok = false;
		if (path != null) {
			ctrl_path.setText(path);
			this.path = path;
			ok = isValidPath();
		}
		setPageComplete(ok);
		getWizard().getContainer().updateButtons();
	}

	// private void updateStatus(String message) {
	// setErrorMessage(message);
	// setPageComplete(message == null);
	// }
	//
	//
	// private void applyToStatusLine() {
	// if (status != OK_STATUS)
	// setErrorMessage(status.getMessage());
	// else {
	// setErrorMessage(null);
	// }
	// }

	public IWizardPage getNextPage() {
		return null; // no more page
	}

	public String getPath() {
		return this.path;
	}

}