/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.cocoon.components.flow.javascript;
import java.util.LinkedList;
import java.util.List;
import org.apache.commons.jxpath.DynamicPropertyHandler;
import org.apache.commons.jxpath.ri.model.NodePointer;
import org.apache.commons.jxpath.ri.model.dynamic.DynamicPropertyPointer;
import org.mozilla.javascript.NativeArray;
import org.mozilla.javascript.Scriptable;
import org.mozilla.javascript.ScriptableObject;
import org.mozilla.javascript.Undefined;
import org.mozilla.javascript.Wrapper;
/**
*
* @version CVS $Id: ScriptablePropertyPointer.java,v 1.5 2004/03/05 13:02:46 bdelacretaz Exp $
*/
public class ScriptablePropertyPointer extends DynamicPropertyPointer {
DynamicPropertyHandler handler;
public ScriptablePropertyPointer(NodePointer parent,
DynamicPropertyHandler handler) {
super(parent, handler);
this.handler = handler;
}
public int getLength() {
Object obj = getBaseValue();
if (obj instanceof Scriptable) {
Scriptable node = (Scriptable)obj;
if (node instanceof NativeArray) {
return (int)((NativeArray)node).jsGet_length();
}
if (ScriptableObject.hasProperty(node, "length")) {
Object val = ScriptableObject.getProperty(node, "length");
if (val instanceof Number) {
return ((Number)val).intValue();
}
}
}
return super.getLength();
}
public Object getImmediateNode() {
Object value;
if (index == WHOLE_COLLECTION) {
value = getBaseValue();
}
else {
value = getBaseValue();
if (value instanceof Scriptable) {
Object property =
ScriptableObject.getProperty((Scriptable)value, index);
if (property != Scriptable.NOT_FOUND) {
value = property; // hack?
}
} else {
return super.getImmediateNode();
}
}
if (value instanceof Wrapper) {
value = ((Wrapper)value).unwrap();
}
return value;
}
public Object getValue() {
Object val = getNode();
if (val instanceof NativeArray) {
NativeArray arr = (NativeArray)val;
List list = new LinkedList();
int len = (int)arr.jsGet_length();
for (int i = 0; i < len; i++) {
Object obj = arr.get(i, arr);
if (obj == Undefined.instance) {
obj = null;
}
list.add(obj);
}
return list;
}
return super.getValue();
}
public void setValue(Object value){
if (index == WHOLE_COLLECTION){
handler.setProperty(getBean(), getPropertyName(), value);
} else {
Object val = handler.getProperty(getBean(), getPropertyName());
if (val instanceof Scriptable) {
ScriptableObject.putProperty((Scriptable)val, index, value);
} else {
super.setValue(value);
}
}
}
public void remove(){
if (index == WHOLE_COLLECTION){
handler.setProperty(getBean(), "length", new Integer(0));
} else {
Object val = handler.getProperty(getBean(), getPropertyName());
if (val instanceof Scriptable) {
try {
ScriptableObject.deleteProperty((Scriptable)val, index);
} catch (Exception e) {
e.printStackTrace();
}
} else {
super.remove();
}
}
}
public boolean isCollection() {
Object obj = getBaseValue();
if (obj instanceof NativeArray) {
return true;
}
return super.isCollection();
}
public String asPath(){
Object obj = getBaseValue();
if (!(obj instanceof Scriptable)) {
return super.asPath();
}
StringBuffer buffer = new StringBuffer();
buffer.append(getParent().asPath());
if (buffer.length() == 0){
buffer.append("/.");
}
else if (buffer.charAt(buffer.length() - 1) == '/'){
buffer.append('.');
}
buffer.append("[@name = '");
buffer.append(escape(getPropertyName()));
buffer.append("']");
if (index != WHOLE_COLLECTION && (obj instanceof NativeArray)) {
buffer.append('[').append(index+1).append(']');
}
return buffer.toString();
}
private String escape(String string){
int index = string.indexOf('\'');
while (index != -1){
string = string.substring(0, index) + "'" + string.substring(index + 1);
index = string.indexOf('\'');
}
index = string.indexOf('\"');
while (index != -1){
string = string.substring(0, index) + """ + string.substring(index + 1);
index = string.indexOf('\"');
}
return string;
}
}