org.zkoss.bind.impl.SimpleBindXelContext Maven / Gradle / Ivy
/* SimpleBindXelContext.java
Purpose:
Description:
History:
3:58 PM 8/31/15, Created by jumperchen
Copyright (C) 2015 Potix Corporation. All Rights Reserved.
*/
package org.zkoss.bind.impl;
import org.zkoss.bind.BindComposer;
import org.zkoss.bind.Binder;
import org.zkoss.xel.FunctionMapper;
import org.zkoss.xel.VariableResolver;
import org.zkoss.xel.util.SimpleXelContext;
import org.zkoss.zk.ui.Component;
/**
* Internal use only.
* This implementation is used to boost the resolver's lookup time, as long as
* the resolving variable matches self or the name of the VM's ID.
* @author jumperchen
* @since 8.0.0
*/
public class SimpleBindXelContext extends SimpleXelContext {
private static final String VM = "vm";
private Component _cmp;
private Binder _binder;
private boolean inited;
public SimpleBindXelContext(Component cmp, Binder binder, VariableResolver resolver, FunctionMapper mapper) {
super(resolver, mapper);
_cmp = cmp;
_binder = binder;
}
public Component getSelf() {
return _cmp;
}
public Binder getBinder() {
if (_binder == null && !inited) {
inited = true;
_binder = BinderUtil.getBinder(_cmp);
}
return _binder;
}
public String getViewModelName() {
if (getBinder() == null)
return null;
String vmName = (String) _binder.getView().getAttribute(BindComposer.VM_ID);
if (vmName == null && _binder.getView().hasAttribute(VM))
return VM;
return vmName;
}
public Object getViewModel() {
if (getBinder() != null)
return _binder.getViewModel();
return null;
}
}