DeleteMessagesAction.java

/* 
 * Copyright 2003,2004,2005 Colin Crist
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */

package hermes.swing.actions;

import hermes.browser.HermesBrowser;
import hermes.browser.IconCache;
import hermes.browser.components.MessagesDeleteable;

import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.KeyStroke;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;

import com.jidesoft.document.DocumentComponent;
import com.jidesoft.document.DocumentComponentEvent;
import com.jidesoft.document.DocumentComponentListener;

/**
 * Delete any selected messages from the queue.
 * 
 * @author colincrist@hermesjms.com
 * @version $Id: DeleteMessagesAction.java,v 1.2 2005/05/19 16:16:09 colincrist
 *          Exp $
 */

public class DeleteMessagesAction extends AbstractAction implements DocumentComponentListener, ListSelectionListener, TableModelListener {
	/**
	 * 
	 */
	private static final long serialVersionUID = -3857033196276911772L;

	public DeleteMessagesAction() {
		putValue(Action.NAME, "Delete");
		putValue(Action.SHORT_DESCRIPTION, "Delete selected messages");
		putValue(Action.SMALL_ICON, IconCache.getIcon("hermes.messages.delete"));
		putValue(Action.ACCELERATOR_KEY, KeyStroke.getKeyStroke(KeyEvent.VK_DELETE, 0, false));

		setEnabled(false);

		HermesBrowser.getBrowser().addDocumentComponentListener(this);
		HermesBrowser.getBrowser().addMessageSelectionListener(this);
	}

	private final void attachListener(final Object source) {
		if (source instanceof MessagesDeleteable) {
			MessagesDeleteable action = (MessagesDeleteable) source;
			action.getTableModel().addTableModelListener(this);
		}
	}

	private final void detachListener(final Object source) {
		if (source instanceof MessagesDeleteable) {
			MessagesDeleteable action = (MessagesDeleteable) source;
			action.getTableModel().removeTableModelListener(this);
		}
	}

	public void actionPerformed(ActionEvent event) {
		if (HermesBrowser.getBrowser().getDocumentPane().getActiveDocument() instanceof MessagesDeleteable) {
			final MessagesDeleteable d = (MessagesDeleteable) HermesBrowser.getBrowser().getDocumentPane().getActiveDocument();

			d.delete();
		}
	}

	private void checkEnabled() {
		DocumentComponent document = HermesBrowser.getBrowser().getDocumentPane().getActiveDocument() ;
		
		setEnabled(document instanceof MessagesDeleteable);
	}

	public void valueChanged(ListSelectionEvent e) {
		checkEnabled();
	}

	public void documentComponentActivated(DocumentComponentEvent event) {
		attachListener(event.getSource());
		checkEnabled();
	}

	public void documentComponentClosed(DocumentComponentEvent event) {
		detachListener(event.getSource());
		checkEnabled();
	}

	public void documentComponentClosing(DocumentComponentEvent event) {
		checkEnabled();
	}

	public void documentComponentDeactivated(DocumentComponentEvent event) {
		detachListener(event.getSource());
		checkEnabled();
	}

	public void documentComponentMoved(DocumentComponentEvent event) {
		checkEnabled();
	}

	public void documentComponentMoving(DocumentComponentEvent event) {
		checkEnabled();
	}

	public void documentComponentOpened(DocumentComponentEvent event) {
		attachListener(event.getSource());
		checkEnabled();
	}

	public void documentComponentDocked(DocumentComponentEvent arg0) {
		// TODO Auto-generated method stub

	}

	public void documentComponentFloated(DocumentComponentEvent arg0) {
		// TODO Auto-generated method stub

	}

	public void tableChanged(TableModelEvent e) {
		checkEnabled();
	}
}