opencommand.java

非常接近C/S操作方式的Java Ajax框架－ZK 用ZK框架使你的B/S应用程序更漂亮更易操作。 官网：www.zkoss.org

/* OpenCommand.java

{{IS_NOTE
	Purpose:
		
	Description:
		
	History:
		Sun Oct  2 14:15:18     2005, Created by tomyeh
}}IS_NOTE

Copyright (C) 2004 Potix Corporation. All Rights Reserved.

{{IS_RIGHT
	This program is distributed under GPL Version 2.0 in the hope that
	it will be useful, but WITHOUT ANY WARRANTY.
}}IS_RIGHT
*/
package org.zkoss.zk.au.impl;

import org.zkoss.lang.Objects;

import org.zkoss.zk.mesg.MZk;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.UiException;
import org.zkoss.zk.ui.event.Events;
import org.zkoss.zk.ui.event.OpenEvent;
import org.zkoss.zk.ui.ext.client.Openable;
import org.zkoss.zk.ui.sys.ComponentCtrl;
import org.zkoss.zk.au.AuRequest;
import org.zkoss.zk.au.Command;

/**
 * Used only by {@link AuRequest} to implement the {@link OpenEvent}
 * relevant command.
 * 
 * @author tomyeh
 */
public class OpenCommand extends Command {
	public OpenCommand(String evtnm, int flags) {
		super(evtnm, flags);
	}

	//-- super --//
	protected void process(AuRequest request) {
		final Component comp = request.getComponent();
		if (comp == null)
			throw new UiException(MZk.ILLEGAL_REQUEST_COMPONENT_REQUIRED, this);
		final String[] data = request.getData();
		if (data == null || (data.length != 1 && data.length != 2))
			throw new UiException(MZk.ILLEGAL_REQUEST_WRONG_DATA,
				new Object[] {Objects.toString(data), this});

		final boolean open = "true".equals(data[0]);
		final Component ref = data.length == 2 && data[1] != null ?
			request.getDesktop().getComponentByUuidIfAny(data[1]): null;
		final Object xc = ((ComponentCtrl)comp).getExtraCtrl();
		if (xc instanceof Openable)
			((Openable)xc).setOpenByClient(open);
		else if (!open)
			throw new UiException("If Openable not implemented by getExtraCtrl(), open must be true");
		Events.postEvent(new OpenEvent(getId(), comp, open, ref));
	}
}