package freemarker.ext.rhino;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.EvaluatorException;
import org.mozilla.javascript.Function;
import org.mozilla.javascript.NativeJavaObject;
import org.mozilla.javascript.Scriptable;
import org.mozilla.javascript.ScriptableObject;
import freemarker.ext.beans.BeansWrapper;
import freemarker.ext.util.ModelFactory;
import freemarker.template.AdapterTemplateModel;
import freemarker.template.ObjectWrapper;
import freemarker.template.TemplateBooleanModel;
import freemarker.template.TemplateCollectionModel;
import freemarker.template.TemplateHashModelEx;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;
import freemarker.template.TemplateNumberModel;
import freemarker.template.TemplateScalarModel;
import freemarker.template.TemplateSequenceModel;
/**
* @author Attila Szegedi
* @version $Id: RhinoScriptableModel.java,v 1.4 2005/06/22 10:52:52 ddekany Exp $
*/
public class RhinoScriptableModel implements TemplateHashModelEx,
TemplateSequenceModel, AdapterTemplateModel, TemplateScalarModel,
TemplateBooleanModel, TemplateNumberModel
{
static final ModelFactory FACTORY = new ModelFactory() {
public TemplateModel create(Object object, ObjectWrapper wrapper) {
return new RhinoScriptableModel((Scriptable)object,
(BeansWrapper)wrapper);
}
};
private final Scriptable scriptable;
private final BeansWrapper wrapper;
public RhinoScriptableModel(Scriptable scriptable, BeansWrapper wrapper) {
this.scriptable = scriptable;
this.wrapper = wrapper;
}
public TemplateModel get(String key) throws TemplateModelException {
Object retval = ScriptableObject.getProperty(scriptable, key);
if(retval instanceof Function) {
return new RhinoFunctionModel((Function)retval, scriptable, wrapper);
}
else {
return wrapper.wrap(retval);
}
}
public TemplateModel get(int index) throws TemplateModelException {
Object retval = ScriptableObject.getProperty(scriptable, index);
if(retval instanceof Function) {
return new RhinoFunctionModel((Function)retval, scriptable, wrapper);
}
else {
return wrapper.wrap(retval);
}
}
public boolean isEmpty() {
return scriptable.getIds().length == 0;
}
public TemplateCollectionModel keys() throws TemplateModelException {
return (TemplateCollectionModel)wrapper.wrap(scriptable.getIds());
}
public int size() {
return scriptable.getIds().length;
}
public TemplateCollectionModel values() throws TemplateModelException {
Object[] ids = scriptable.getIds();
Object[] values = new Object[ids.length];
for (int i = 0; i < values.length; i++) {
Object id = ids[i];
if(id instanceof Number) {
values[i] = ScriptableObject.getProperty(scriptable,
((Number)id).intValue());
}
else {
values[i] = ScriptableObject.getProperty(scriptable,
String.valueOf(id));
}
}
return (TemplateCollectionModel)wrapper.wrap(values);
}
public boolean getAsBoolean() {
return Context.toBoolean(scriptable);
}
public Number getAsNumber() {
return new Double(Context.toNumber(scriptable));
}
public String getAsString() {
return Context.toString(scriptable);
}
Scriptable getScriptable() {
return scriptable;
}
BeansWrapper getWrapper() {
return wrapper;
}
public Object getAdaptedObject(Class hint) {
try {
return NativeJavaObject.coerceType(hint, scriptable);
}
catch(EvaluatorException e) {
return NativeJavaObject.coerceType(Object.class, scriptable);
}
}
}
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