Java tutorial
/* * Copyright 2018 MovingBlocks * * 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.terasology.utilities.gson; import com.google.gson.JsonDeserializationContext; import com.google.gson.JsonDeserializer; import com.google.gson.JsonElement; import com.google.gson.JsonSerializationContext; import com.google.gson.JsonSerializer; import org.lwjgl.opengl.DisplayMode; import org.terasology.engine.subsystem.Resolution; import org.terasology.engine.subsystem.headless.device.HeadlessResolution; import org.terasology.engine.subsystem.lwjgl.LwjglResolution; import java.lang.reflect.Type; public final class ResolutionHandler implements JsonSerializer<Resolution>, JsonDeserializer<Resolution> { @Override public Resolution deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) { if (json.isJsonNull()) { return HeadlessResolution.getInstance(); } return new LwjglResolution(context.deserialize(json, DisplayMode.class)); } @Override public JsonElement serialize(Resolution src, Type typeOfSrc, JsonSerializationContext context) { if (src instanceof LwjglResolution) { return context.serialize(((LwjglResolution) src).getDisplayMode()); } else { return null; } } }