cc.alcina.framework.jvmclient.service.GWTDummyClientBridge.java Source code

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Here is the source code for cc.alcina.framework.jvmclient.service.GWTDummyClientBridge.java

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/*
 * Copyright 2008 Google Inc.
 *
 * 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.
 * 
 * nick - copied from gwt/junit
 */
package cc.alcina.framework.jvmclient.service;

import java.lang.reflect.Method;
import java.util.logging.Level;
import java.util.logging.Logger;

import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.GWTBridge;
import com.google.gwt.dev.About;
import com.google.gwt.junit.GWTMockUtilities;

import cc.alcina.framework.common.client.WrappedRuntimeException;

/**
 * A dummy implementation of {@link GWTBridge}, which instantiates nothing.
 *
 * @see GWTMockUtilities
 */
public class GWTDummyClientBridge extends GWTBridge {
    private static final Logger logger = Logger.getLogger(GWTDummyClientBridge.class.getName());

    /**
     * Returns null.
     */
    @Override
    public <T> T create(Class<?> classLiteral) {
        return null;
    }

    /**
     * Returns the current version of GWT ({@link About#getGwtVersionNum()}).
     */
    @Override
    public String getVersion() {
        return About.getGwtVersionNum();
    }

    public void install() {
        try {
            Method m = GWT.class.getDeclaredMethod("setBridge", GWTBridge.class);
            m.setAccessible(true);
            m.invoke(null, this);
        } catch (Exception e) {
            throw new WrappedRuntimeException(e);
        }
    }

    /**
     * Returns true.
     */
    @Override
    public boolean isClient() {
        return true;
    }

    /**
     * Logs the message and throwable to the standard logger, with level
     * {@link Level#SEVERE}.
     */
    @Override
    public void log(String message, Throwable e) {
        logger.log(Level.SEVERE, message, e);
    }
}