com.gwtplatform.mvp.rebind.ProxyOutputterFactory Maven / Gradle / Ivy

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/*
 * Copyright 2011 ArcBees 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.
 */

package com.gwtplatform.mvp.rebind;

import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.TreeLogger.Type;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.TypeOracle;

/**
 * Factory used to instantiate the adequate {@link ProxyOutputter} given a
 * proxy interface.
 */
public class ProxyOutputterFactory {
    private final TypeOracle oracle;
    private final TreeLogger logger;
    private final ClassCollection classCollection;
    private final GinjectorInspector ginjectorInspector;
    private final PresenterInspector presenterInspector;

    public ProxyOutputterFactory(TypeOracle oracle, TreeLogger logger,
            ClassCollection classCollection,
            GinjectorInspector ginjectorInspector,
            PresenterInspector presenterInspector) {
        this.oracle = oracle;
        this.logger = logger;
        this.classCollection = classCollection;
        this.ginjectorInspector = ginjectorInspector;
        this.presenterInspector = presenterInspector;
    }

    /**
     * Instantiates the adequate {@link ProxyOutputter} given a
     * proxy interface.
     *
     * @param proxyInterface The proxy interface for which to create a {@link ProxyOutputter}.
     * @return The newly created {@link ProxyOutputter}.
     * @throws UnableToCompleteException If something goes wrong. An error will be logged.
     */
    public ProxyOutputter create(JClassType proxyInterface)
            throws UnableToCompleteException {

        ProxyOutputterBase result = null;
        if (isProxyPlace(proxyInterface) && isTabContentProxy(proxyInterface)) {
            result = new TabContentProxyPlaceOutputter(oracle, logger, classCollection,
                    ginjectorInspector, presenterInspector, createProxyPlaceOutputter(),
                    createNonLeafTabContentProxyOutputter());
        } else if (isProxyPlace(proxyInterface)) {
            result = createProxyPlaceOutputter();
        } else if (isNonLeafTabContentProxy(proxyInterface)) {
            result = createNonLeafTabContentProxyOutputter();
        } else if (isTabContentProxy(proxyInterface)) {
            logger.log(Type.WARN, "TabContentProxy is deprecated. Use NonLeafTabContentProxy or " +
                    "TabContentProxyPlace instead.");
            result = createNonLeafTabContentProxyOutputter();
        } else {
            result = new BasicProxyOutputter(oracle, logger, classCollection, ginjectorInspector,
                    presenterInspector);
        }

        result.init(proxyInterface);
        result.findProxyEvents();
        return result;
    }

    private ProxyPlaceOutputter createProxyPlaceOutputter() {
        return new ProxyPlaceOutputter(oracle, logger, classCollection, ginjectorInspector,
                presenterInspector);
    }

    private NonLeafTabContentProxyOutputter createNonLeafTabContentProxyOutputter() {
        return new NonLeafTabContentProxyOutputter(oracle, logger, classCollection, ginjectorInspector,
                presenterInspector);
    }

    private boolean isProxyPlace(JClassType proxyInterface) {
        return proxyInterface.isAssignableTo(classCollection.basePlaceClass);
    }

    private boolean isTabContentProxy(JClassType proxyInterface) {
        return proxyInterface.isAssignableTo(classCollection.tabContentProxyClass);
    }

    private boolean isNonLeafTabContentProxy(JClassType proxyInterface) {
        return proxyInterface.isAssignableTo(classCollection.nonLeafTabContentProxyClass);
    }
}