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org.zkoss.bind.impl.FormBindingImpl Maven / Gradle / Ivy
/* FormBindingImpl.java
Purpose:
Description:
History:
Aug 9, 2011 5:52:35 PM, Created by henrichen
Copyright (C) 2011 Potix Corporation. All Rights Reserved.
*/
package org.zkoss.bind.impl;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.Map;
import org.zkoss.bind.BindContext;
import org.zkoss.bind.Binder;
import org.zkoss.bind.Form;
import org.zkoss.bind.annotation.ImmutableFields;
import org.zkoss.bind.proxy.FormProxyObject;
import org.zkoss.bind.proxy.ProxyHelper;
import org.zkoss.bind.sys.BindEvaluatorX;
import org.zkoss.bind.sys.BinderCtrl;
import org.zkoss.bind.sys.ConditionType;
import org.zkoss.bind.sys.FormBinding;
import org.zkoss.bind.xel.zel.BindELContext;
import org.zkoss.xel.ExpressionX;
import org.zkoss.zk.ui.Component;
/**
* Base implementation of {@link FormBinding}.
* @author henrichen
* @since 6.0.0
*/
public class FormBindingImpl extends BindingImpl implements FormBinding {
private static final long serialVersionUID = 1463169907348730644L;
protected final String _formId;
protected final AccessInfo _accessInfo;
private Map _fieldExprs;
protected FormBindingImpl(Binder binder, Component comp, String formId, String accessExpr,
ConditionType conditionType, String command, Map bindingArgs) {
super(binder, comp, bindingArgs);
this._formId = formId;
this._accessInfo = AccessInfo.create(this, accessExpr, Object.class, conditionType, command, ignoreTracker());
}
//should this binding set the ignore tracker attribute when evaluate the expression.
protected boolean ignoreTracker() {
return false;
}
public Form getFormBean() {
return ((BinderCtrl) getBinder()).getForm(getComponent(), _formId);
}
public Form initFormBean(Object bean, Class class1, BindContext bindContext) {
Form form = ((BinderCtrl) getBinder()).getForm(getComponent(), _formId);
if (form == null) {
Class[] interfaces = null;
// Bug ZK-2787
if (bindContext.getAttribute(String.valueOf(Method.class)) != null) {
Annotation[] annotations = (Annotation[]) bindContext.getAttribute(String.valueOf(Method.class));
if (annotations != null) {
boolean found = false;
for (Annotation annot : annotations) {
if (annot.annotationType() == ImmutableFields.class) {
found = true;
break;
}
}
if (found)
interfaces = new Class[] { ImmutableFields.class };
}
}
form = (Form) ProxyHelper.createFormProxy(bean, class1, interfaces);
((BinderCtrl) getBinder()).storeForm(getComponent(), _formId, form);
}
if (!(bean instanceof Form) && form instanceof FormProxyObject)
((FormProxyObject) form).setFormOwner(bean, this);
return form;
}
public String getFormId() {
return _formId;
}
public String getPropertyString() {
return BindEvaluatorXUtil.getExpressionString(this._accessInfo.getProperty());
}
public ConditionType getConditionType() {
return this._accessInfo.getConditionType();
}
public String getCommandName() {
return this._accessInfo.getCommandName();
}
public ExpressionX getFieldExpression(BindEvaluatorX eval, String field) {
ExpressionX expr = _fieldExprs == null ? null : _fieldExprs.get(field);
if (expr == null) {
final String property = getPropertyString();
final String script = BindELContext.appendFields(property, field);
expr = eval.parseExpressionX(null, script, Object.class);
_fieldExprs = AllocUtil.inst.putMap(_fieldExprs, field, expr); //ZK-2289
}
return expr;
}
public ExpressionX getFormExpression(BindEvaluatorX eval, String field) {
final String script = BindELContext.appendFields(getFormId(), field);
ExpressionX expr = _fieldExprs == null ? null : _fieldExprs.get(script);
if (expr == null) {
expr = eval.parseExpressionX(null, script, Object.class);
_fieldExprs = AllocUtil.inst.putMap(_fieldExprs, script, expr); //ZK-2289
}
return expr;
}
public ExpressionX getBaseExpression(BindEvaluatorX eval) {
//TODO, Dennis potential bug if a field name same as form id
final String property = getPropertyString();
ExpressionX expr = _fieldExprs == null ? null : _fieldExprs.get(property);
if (expr == null) {
final String script = property;
expr = eval.parseExpressionX(null, script, Object.class);
_fieldExprs = AllocUtil.inst.putMap(_fieldExprs, property, expr); //ZK-2289
}
return expr;
}
public String toString() {
return new StringBuilder().append(getClass().getSimpleName()).append("@")
.append(Integer.toHexString(hashCode())).append(",component:").append(getComponent()).append(",id:")
.append(getFormId()).append(",access:").append(getPropertyString()).append(",condition:")
.append(getConditionType()).append(",command:").append(getCommandName()).toString();
}
}
