Java tutorial
/* * 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.Locale; import org.apache.commons.jxpath.ri.QName; import org.apache.commons.jxpath.ri.model.NodePointer; import org.apache.commons.jxpath.ri.model.beans.PropertyPointer; import org.apache.commons.jxpath.ri.model.dynamic.DynamicPointer; import org.mozilla.javascript.NativeArray; import org.mozilla.javascript.Scriptable; import org.mozilla.javascript.ScriptableObject; import org.mozilla.javascript.Wrapper; /** * * @version CVS $Id: ScriptablePointer.java 30932 2004-07-29 17:35:38Z vgritsenko $ */ public class ScriptablePointer extends DynamicPointer { Scriptable node; final static ScriptablePropertyHandler handler = new ScriptablePropertyHandler(); public ScriptablePointer(NodePointer parent, QName name, Scriptable object) { super(parent, name, object, handler); node = object; } public ScriptablePointer(QName name, Scriptable object, Locale locale) { super(name, object, handler, locale); node = object; } public PropertyPointer getPropertyPointer() { return new ScriptablePropertyPointer(this, 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 = node; } else { value = ScriptableObject.getProperty(node, index); if (value == Scriptable.NOT_FOUND) { value = node; // hack: same behavior as ValueUtils.getValue() } } if (value instanceof Wrapper) { value = ((Wrapper) value).unwrap(); } return value; } public void setValue(Object value) { if (getParent() != null) { getParent().setValue(value); } } }