Java Javascript Mozilla Library jsToJava(Object jsObject)

Description

js To Java

License

Apache License

Declaration

public static Object jsToJava(Object jsObject) 

Method Source Code

//package com.java2s;
/*//www  . j  a v a  2s.c  o m
 * Copyright (c) 2010 the original author or authors.
 *
 * 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.
 */

import java.util.HashMap;
import java.util.Map;
import org.mozilla.javascript.NativeArray;
import org.mozilla.javascript.NativeJavaObject;
import org.mozilla.javascript.NativeObject;

public class Main {
    public static Object jsToJava(Object jsObject) {
        if (jsObject == null)
            return null;
        if (jsObject == org.mozilla.javascript.Context.getUndefinedValue())
            return null;
        if (jsObject instanceof String)
            return jsObject;
        if (jsObject instanceof Boolean)
            return jsObject;
        if (jsObject instanceof Integer)
            return jsObject;
        if (jsObject instanceof Long)
            return jsObject;
        if (jsObject instanceof Float)
            return jsObject;
        if (jsObject instanceof Double)
            return jsObject;
        if (jsObject instanceof NativeArray)
            return convertArray((NativeArray) jsObject);
        if (jsObject instanceof NativeObject)
            return convertObject((NativeObject) jsObject);
        if (jsObject instanceof NativeJavaObject)
            return ((NativeJavaObject) jsObject).unwrap();
        return jsObject;
    }

    private static Object[] convertArray(NativeArray jsArray) {
        Object[] ids = jsArray.getIds();
        Object[] result = new Object[ids.length];
        for (int i = 0; i < ids.length; i++) {
            Object id = ids[i];
            int index = (Integer) id;
            Object jsValue = jsArray.get(index, jsArray);
            result[i] = jsToJava(jsValue);
        }
        return result;
    }

    private static Object convertObject(NativeObject jsObject) {
        Object[] ids = jsObject.getIds();
        Map result = new HashMap(ids.length);
        for (Object id : ids) {
            if (id instanceof String) {
                Object jsValue = jsObject.get((String) id, jsObject);
                result.put(id, jsToJava(jsValue));
            } else if (id instanceof Integer) {
                Object jsValue = jsObject.get((Integer) id, jsObject);
                result.put(id, jsToJava(jsValue));
            } else
                throw new AssertionError();
        }
        return result;
    }
}

Related

1. isSimplePropertyGet(PropertyGet pg, String expectedObj, String expectedField)
2. isStaticProperty(Scriptable property)
3. isValid(Object[] args)
4. isVariable(Name name)
5. javaToJS(Object o, Scriptable scope)
6. jsToJava(Object obj)
7. listToNativeArray(List list)
8. mapJSToJava(final Object jsObject)
9. mapToNativeObject(Map map)