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Vaadin is a web application framework for Rich Internet Applications (RIA). Vaadin enables easy development and maintenance of fast and secure rich web applications with a stunning look and feel and a wide browser support. It features a server-side architecture with the majority of the logic running on the server. Ajax technology is used at the browser-side to ensure a rich and interactive user experience.

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/*
 * Copyright 2000-2016 Vaadin Ltd.
 *
 * 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.vaadin.client;

import com.vaadin.client.communication.HasJavaScriptConnectorHelper;
import com.vaadin.client.extensions.AbstractExtensionConnector;
import com.vaadin.server.AbstractJavaScriptExtension;
import com.vaadin.shared.JavaScriptExtensionState;
import com.vaadin.shared.ui.Connect;

@Connect(AbstractJavaScriptExtension.class)
public final class JavaScriptExtension extends AbstractExtensionConnector
        implements HasJavaScriptConnectorHelper {
    private final JavaScriptConnectorHelper helper = new JavaScriptConnectorHelper(
            this);

    @Override
    protected void init() {
        super.init();
        helper.init();
    }

    @Override
    public JavaScriptConnectorHelper getJavascriptConnectorHelper() {
        return helper;
    }

    @Override
    public JavaScriptExtensionState getState() {
        return (JavaScriptExtensionState) super.getState();
    }

    @Override
    public void onUnregister() {
        super.onUnregister();
        helper.onUnregister();
    }

    @Override
    protected void extend(ServerConnector target) {
        // Nothing to do for JavaScriptExtension here. Everything is done in
        // javascript.
    }
}