/*******************************************************************************
 * Copyright (c) 2004, 2008 Wind River Systems, Inc. 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
 *
 * Initial Contributors:
 * The following Wind River employees contributed to the Terminal component
 * that contains this file: Chris Thew, Fran Litterio, Stephen Lamb,
 * Helmut Haigermoser and Ted Williams.
 *
 * Contributors:
 * Michael Scharf (Wind River) - split into core, view and connector plugins
 * Martin Oberhuber (Wind River) - fixed copyright headers and beautified
 * Anna Dushistova (MontaVista) - Adapted from TerminalAction
 *******************************************************************************/
package org.eclipse.tm.internal.terminal.control.actions;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.tm.internal.terminal.control.ITerminalViewControl;
import org.eclipse.tm.internal.terminal.control.impl.TerminalPlugin;

public abstract class AbstractTerminalAction extends Action {
	private final ITerminalViewControl fTarget;

	public AbstractTerminalAction(String strId) {
		this(null, strId, 0);
	}

	public AbstractTerminalAction(ITerminalViewControl target,
			String strId) {
		this(target, strId, 0);
	}

	public AbstractTerminalAction(ITerminalViewControl target,
			String strId, int style) {
		super("", style); //$NON-NLS-1$

		fTarget = target;

		setId(strId);
	}

	abstract public void run();

	protected void setupAction(String strText, String strToolTip,
			String strImage, String strEnabledImage, String strDisabledImage,
			boolean bEnabled) {
		setupAction(strText, strToolTip, strImage, strEnabledImage,
				strDisabledImage, bEnabled, TerminalPlugin.getDefault()
						.getImageRegistry());
	}

	protected void setupAction(String strText, String strToolTip,
			String strHoverImage, String strEnabledImage,
			String strDisabledImage, boolean bEnabled,
			ImageRegistry imageRegistry) {
		setupAction(strText, strToolTip, imageRegistry
				.getDescriptor(strHoverImage), imageRegistry
				.getDescriptor(strEnabledImage), imageRegistry
				.getDescriptor(strDisabledImage), bEnabled);
	}

	protected void setupAction(String strText, String strToolTip,
			ImageDescriptor hoverImage, ImageDescriptor enabledImage,
			ImageDescriptor disabledImage, boolean bEnabled) {
		setText(strText);
		setToolTipText(strToolTip);
		setEnabled(bEnabled);
		if (enabledImage != null) {
			setImageDescriptor(enabledImage);
		}
		if (disabledImage != null) {
			setDisabledImageDescriptor(disabledImage);
		}
		if (hoverImage != null) {
			setHoverImageDescriptor(hoverImage);
		}
	}

	/**
	 * Return the terminal instance on which the action should operate.
	 * 
	 * @return the terminal instance on which the action should operate.
	 */
	protected ITerminalViewControl getTarget() {
		return fTarget;
	}

	/**
	 * Subclasses can update their action
	 *
	 * @param aboutToShow true before the menu is shown -- false when the menu
	 *            gets hidden
	 */
	public void updateAction(boolean aboutToShow) {
	}
}