package org.jdesktop.beansbinding;
import java.util.*;
import java.beans.*;
import org.jdesktop.beansbinding.ext.BeanAdapterFactory;
import org.jdesktop.el.BeanELResolver;
import org.jdesktop.el.CompositeELResolver;
import org.jdesktop.el.ELContext;
import org.jdesktop.el.ELResolver;
import org.jdesktop.el.FunctionMapper;
import org.jdesktop.el.MapELResolver;
import org.jdesktop.el.VariableMapper;
import org.jdesktop.el.impl.lang.FunctionMapperImpl;
import org.jdesktop.el.impl.lang.VariableMapperImpl;
/**
* This class is temporary. Moving forward, we'll instead have a factory for
* configuring this.
*
* @author Shannon Hickey
*/
class TempELContext extends ELContext {
private final CompositeELResolver resolver;
private final VariableMapper variableMapper = new VariableMapperImpl();
private final FunctionMapper functionMapper = new FunctionMapperImpl();
public TempELContext() {
resolver = new CompositeELResolver();
// PENDING(shannonh) - EL also has an ArrayELResolver. Should that be added too?
resolver.add(new MapELResolver());
resolver.add(new BeanDelegateELResolver());
}
public ELResolver getELResolver() {
return resolver;
}
public FunctionMapper getFunctionMapper() {
return functionMapper;
}
public VariableMapper getVariableMapper() {
return variableMapper;
}
private class BeanDelegateELResolver extends BeanELResolver {
public Iterator<FeatureDescriptor> getFeatureDescriptors(ELContext context, Object base) {
Iterator<FeatureDescriptor> superDescriptors = super.getFeatureDescriptors(context, base);
if (base != null) {
List<PropertyDescriptor> pds = BeanAdapterFactory.getAdapterPropertyDescriptors(base.getClass());
if (pds.size() > 0) {
Map<String, FeatureDescriptor> fdMap = new HashMap<String,FeatureDescriptor>();
while (superDescriptors.hasNext()) {
FeatureDescriptor fd = superDescriptors.next();
fdMap.put(fd.getName(), fd);
}
for (PropertyDescriptor pd : pds) {
if (pd.getPropertyType() != null) {
pd.setValue("type", pd.getPropertyType());
pd.setValue("resolvableAtDesignTime", Boolean.TRUE);
fdMap.put(pd.getName(), pd);
}
}
return fdMap.values().iterator();
}
}
return superDescriptors;
}
private Object baseOrAdapter(Object base, Object property) {
if (base != null && property instanceof String) {
Object adapter = BeanAdapterFactory.getAdapter(base, (String) property);
if (adapter != null) {
return adapter;
}
}
return base;
}
public void setValue(ELContext context, Object base, Object property, Object val) {
super.setValue(context, baseOrAdapter(base, property), property, val);
}
public boolean isReadOnly(ELContext context, Object base, Object property) {
return super.isReadOnly(context, baseOrAdapter(base, property),
property);
}
public Object getValue(ELContext context, Object base, Object property) {
return super.getValue(context, baseOrAdapter(base, property),
property);
}
public Class<?> getType(ELContext context, Object base, Object property) {
return super.getType(context, baseOrAdapter(base, property),
property);
}
}
}