com.kotcrab.vis.editor.serializer.json.ClassJsonSerializer.java Source code

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Here is the source code for com.kotcrab.vis.editor.serializer.json.ClassJsonSerializer.java

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/*
 * Copyright 2014-2016 See AUTHORS file.
 *
 * 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 com.kotcrab.vis.editor.serializer.json;

import com.badlogic.gdx.utils.ObjectMap;
import com.google.gson.*;

import java.lang.reflect.Type;

/** @author Kotcrab */
public class ClassJsonSerializer implements JsonSerializer<Class<?>>, JsonDeserializer<Class<?>> {
    private ObjectMap<Class<?>, String> classTagMap = new ObjectMap<>();
    private ObjectMap<String, Class<?>> tagClassMap = new ObjectMap<>();

    private ClassLoader classLoader;

    public ClassJsonSerializer(ClassLoader classLoader) {
        this.classLoader = classLoader;
    }

    public ClassJsonSerializer registerTag(String tag, Class<?> clazz) {
        classTagMap.put(clazz, tag);
        tagClassMap.put(tag, clazz);
        return this;
    }

    @Override
    public JsonElement serialize(Class<?> clazz, Type typeOfSrc, JsonSerializationContext context) {
        return new JsonPrimitive(getTagClassName(clazz));
    }

    @Override
    public Class<?> deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context)
            throws JsonParseException {
        try {
            return getFullClassName(json.getAsString());
        } catch (ClassNotFoundException e) {
            throw new JsonParseException(e);
        }
    }

    private String getTagClassName(Class<?> clazz) {
        String shortName = classTagMap.get(clazz);
        if (shortName != null)
            return shortName;
        else
            return clazz.getName();
    }

    private Class<?> getFullClassName(String name) throws ClassNotFoundException {
        Class<?> clazz = tagClassMap.get(name);

        if (clazz != null)
            return clazz;
        else
            return Class.forName(name, false, classLoader);
    }
}