org.rstudio.core.rebind.StaticDataResourceGenerator.java Source code

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Here is the source code for org.rstudio.core.rebind.StaticDataResourceGenerator.java

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/*
 * StaticDataResourceGenerator.java
 *
 * Copyright (C) 2009-12 by RStudio, Inc.
 *
 * Unless you have received this program directly from RStudio pursuant
 * to the terms of a commercial license agreement with RStudio, then
 * this program is licensed to you under the terms of version 3 of the
 * GNU Affero General Public License. This program is distributed WITHOUT
 * ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
 * AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
 *
 */
package org.rstudio.core.rebind;

import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JMethod;
import com.google.gwt.resources.ext.AbstractResourceGenerator;
import com.google.gwt.resources.ext.ResourceContext;
import com.google.gwt.resources.ext.ResourceGeneratorUtil;
import com.google.gwt.user.rebind.SourceWriter;
import com.google.gwt.user.rebind.StringSourceWriter;
import org.rstudio.core.client.resources.StaticDataResource;

import java.net.URL;

/**
 * Forked from GWT's DataResourceGenerator. Only difference is that the call
 * to context.deploy passes true for xhrCompatible.
 */
public final class StaticDataResourceGenerator extends AbstractResourceGenerator {
    @Override
    public String createAssignment(TreeLogger logger, ResourceContext context, JMethod method)
            throws UnableToCompleteException {

        URL[] resources = ResourceGeneratorUtil.findResources(logger, context, method);

        if (resources.length != 1) {
            logger.log(TreeLogger.ERROR, "Exactly one resource must be specified", null);
            throw new UnableToCompleteException();
        }

        URL resource = resources[0];
        String outputUrlExpression = context.deploy(resource, null, true);

        SourceWriter sw = new StringSourceWriter();
        // Write the expression to create the subtype.
        sw.println("new " + StaticDataResource.class.getName() + "() {");
        sw.indent();

        // Convenience when examining the generated code.
        sw.println("// " + resource.toExternalForm());

        sw.println("public String getUrl() {");
        sw.indent();
        sw.println("return " + outputUrlExpression + ";");
        sw.outdent();
        sw.println("}");

        sw.println("public com.google.gwt.safehtml.shared.SafeUri getSafeUri() {");
        sw.indent();
        sw.println("return new org.rstudio.core.client.SafeUriStringImpl(" + outputUrlExpression + ");");
        sw.outdent();
        sw.println("}");

        sw.println("public String getName() {");
        sw.indent();
        sw.println("return \"" + method.getName() + "\";");
        sw.outdent();
        sw.println("}");

        sw.outdent();
        sw.println("}");

        return sw.toString();
    }
}