albumrenamepage.java

eclise rcp 项目,是非常好的学习源码

/*******************************************************************************
 * Copyright (c) 2007 Siemens AG
 * 
 * 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:
 *    Kai T鰀ter - initial API and implementation
 *******************************************************************************/

package com.siemens.ct.mp3m.ui.wizards;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.preference.StringFieldEditor;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.KeyListener;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;

/**
 * A wizard page for renaming an album.
 * 
 * @author Kai Toedter
 * @author $LastChangedBy: toedter_k $
 * @version $LastChangedDate: 2007-02-22 10:13:57 +0100 (Do, 22 Feb 2007) $
 * @version $LastChangedRevision: 469 $
 * 
 */
public class AlbumRenamePage extends WizardPage implements KeyListener {

	private Status albumError = new Status(IStatus.ERROR, "not_used", 0,//$NON-NLS-1$
			Messages.getString("AlbumRenamePage.albumError"), null); //$NON-NLS-1$

	private IStatus ok = new Status(IStatus.OK, "not_used", 0, Messages
			.getString("AlbumRenamePage.description"), null);

	private AlbumWizardModel model;
	private StringFieldEditor artist;
	private StringFieldEditor oldName;
	private StringFieldEditor newName;

	public AlbumRenamePage(AlbumWizardModel model) {
		super("");
		this.model = model;
		setTitle(Messages.getString("AlbumRenamePage.title")); //$NON-NLS-1$
		setDescription(Messages.getString("AlbumRenamePage.description")); //$NON-NLS-1$
	}

	public void createControl(Composite parent) {
		// create the composite to hold the widgets
		Composite composite = new Composite(parent, SWT.NONE);

		// create the desired layout for this wizard page
		GridLayout gl = new GridLayout(2, false);
		composite.setLayout(gl);

		// artist
		artist = new StringFieldEditor(
				"Artist", Messages.getString("AlbumRenamePage.artist"), composite);//$NON-NLS-1$
		artist.setEnabled(false, composite);
		// old name
		oldName = new StringFieldEditor(
				"Old Name", Messages.getString("AlbumRenamePage.oldName"), composite);//$NON-NLS-1$
		oldName.setEnabled(false, composite);
		// new name
		newName = new StringFieldEditor(
				"New Name", Messages.getString("AlbumRenamePage.newName"), composite);//$NON-NLS-1$
		newName.getTextControl(composite).addKeyListener(this);

		// set the composite as the control for this page
		setControl(composite);

	}

	@Override
	public void setVisible(boolean visible) {
		artist.setStringValue(model.getArtist());
		oldName.setStringValue(model.getOldName());
		super.setVisible(visible);
	}

	public IStatus checkStatus(boolean applyToStatusline) {
		IStatus status = ok;
		String name = newName.getStringValue();
		if (name.length() == 0 || name.equals(model.getOldName()))
			status = albumError;
		if (applyToStatusline)
			StatusUtil.applyToStatusLine(this, status);

		return status;
	}

	public boolean canFlipToNextPage() {
		return false;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.swt.events.KeyListener#keyPressed(org.eclipse.swt.events.KeyEvent)
	 */
	public void keyPressed(KeyEvent e) {
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.swt.events.KeyListener#keyReleased(org.eclipse.swt.events.KeyEvent)
	 */
	public void keyReleased(KeyEvent e) {
		model.setNewName(newName.getStringValue());
		checkStatus(true);
		getWizard().getContainer().updateButtons();
	}

}