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/* BindUtils.java
Purpose:
Description:
History:
2012/1/31 Created by Dennis Chen
Copyright (C) 2011 Potix Corporation. All Rights Reserved.
*/
package org.zkoss.bind;
import java.util.Map;
import org.zkoss.bind.annotation.BindingParam;
import org.zkoss.bind.proxy.ViewModelProxyObject;
import org.zkoss.bind.sys.BinderCtrl;
import org.zkoss.lang.Strings;
import org.zkoss.zk.ui.event.Event;
import org.zkoss.zk.ui.event.EventQueue;
import org.zkoss.zk.ui.event.EventQueues;
/**
* A utility to help developer using zk bind
* @author dennis
*
*/
public class BindUtils {
/**
* Post a global command to corresponding event queue
* @param queueName the queue name, null for default queue name
* @param queueScope the queue scope, null for default queue scope (i.e. {@link EventQueues#DESKTOP})
* @param cmdName the global command name
* @param args arguments, could get the data in command method by {@link BindingParam}
*/
public static void postGlobalCommand(String queueName, String queueScope, String cmdName,
Map args) {
final EventQueue que = EventQueues.lookup(queueName == null ? BinderCtrl.DEFAULT_QUEUE_NAME : queueName,
queueScope == null ? BinderCtrl.DEFAULT_QUEUE_SCOPE : queueScope, false);
if (Strings.isEmpty(cmdName))
throw new IllegalArgumentException("cmdName is empty");
if (que != null) {
que.publish(new GlobalCommandEvent(null, cmdName, args));
}
}
/**
* Post a notify change to default event queue to notify a bean's property changing
* Omitting the queue name and scope for convenience
* @param bean the bean instance
* @param property the property name of bean
* @see #postNotifyChange(String, String, Object, String)
* @since 9.5.0
*/
public static void postNotifyChange(Object bean, String property) {
postNotifyChange(null, null, bean, property);
}
/**
* Post a notify change to corresponding event queue to notify a bean's property changing
* @param queueName the queue name, null for default queue name
* @param queueScope the queue scope, null for default queue scope (i.e. {@link EventQueues#DESKTOP})
* @param bean the bean instance
* @param property the property name of bean
*/
public static void postNotifyChange(String queueName, String queueScope, Object bean, String property) {
final EventQueue que = EventQueues.lookup(queueName == null ? BinderCtrl.DEFAULT_QUEUE_NAME : queueName,
queueScope == null ? BinderCtrl.DEFAULT_QUEUE_SCOPE : queueScope, false);
if (Strings.isEmpty(property))
throw new IllegalArgumentException("property is empty");
if (que != null) {
que.publish(new PropertyChangeEvent(null, bean, property));
}
}
/**
* Post a notify change to default event queue to notify a bean's properties changing
* Omitting the queue name and scope for convenience
* @param bean the bean instance
* @param properties the properties name of bean
* @see #postNotifyChange(String, String, Object, String...)
* @since 9.5.0
*/
public static void postNotifyChange(Object bean, String... properties) {
postNotifyChange(null, null, bean, properties);
}
/**
* Post a notify change to corresponding event queue to notify a bean's properties changing
* Accept multiple properties for convenience
* @param queueName the queue name, null for default queue name
* @param queueScope the queue scope, null for default queue scope (i.e. {@link EventQueues#DESKTOP})
* @param bean the bean instance
* @param properties the properties name of bean
* @see #postNotifyChange(String, String, Object, String)
* @since 8.5.2
*/
public static void postNotifyChange(String queueName, String queueScope, Object bean, String... properties) {
for (String property : properties) {
postNotifyChange(queueName, queueScope, bean, property);
}
}
public static Class getViewModelClass(Object viewModel) {
if (viewModel instanceof ViewModelProxyObject)
return ((ViewModelProxyObject) viewModel).getOriginClass();
return viewModel.getClass();
}
}
