com.sencha.gxt.core.rebind.SafeHtmlTemplatesCreator.java Source code

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Here is the source code for com.sencha.gxt.core.rebind.SafeHtmlTemplatesCreator.java

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/**
 * Sencha GXT 4.0.0 - Sencha for GWT
 * Copyright (c) 2006-2015, Sencha Inc.
 *
 * licensing@sencha.com
 * http://www.sencha.com/products/gxt/license/
 *
 * ================================================================================
 * Open Source License
 * ================================================================================
 * This version of Sencha GXT is licensed under the terms of the Open Source GPL v3
 * license. You may use this license only if you are prepared to distribute and
 * share the source code of your application under the GPL v3 license:
 * http://www.gnu.org/licenses/gpl.html
 *
 * If you are NOT prepared to distribute and share the source code of your
 * application under the GPL v3 license, other commercial and oem licenses
 * are available for an alternate download of Sencha GXT.
 *
 * Please see the Sencha GXT Licensing page at:
 * http://www.sencha.com/products/gxt/license/
 *
 * For clarification or additional options, please contact:
 * licensing@sencha.com
 * ================================================================================
 *
 *
 * ================================================================================
 * Disclaimer
 * ================================================================================
 * THIS SOFTWARE IS DISTRIBUTED "AS-IS" WITHOUT ANY WARRANTIES, CONDITIONS AND
 * REPRESENTATIONS WHETHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE
 * IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY, MERCHANTABLE QUALITY,
 * FITNESS FOR A PARTICULAR PURPOSE, DURABILITY, NON-INFRINGEMENT, PERFORMANCE AND
 * THOSE ARISING BY STATUTE OR FROM CUSTOM OR USAGE OF TRADE OR COURSE OF DEALING.
 * ================================================================================
 */
package com.sencha.gxt.core.rebind;

import java.util.HashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import com.google.gwt.core.ext.GeneratorContext;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.JMethod;
import com.google.gwt.core.ext.typeinfo.JParameter;
import com.google.gwt.dev.util.Name;
import com.google.gwt.safehtml.client.SafeHtmlTemplates;
import com.google.gwt.safehtml.client.SafeHtmlTemplates.Template;
import com.google.gwt.safehtml.shared.SafeHtml;
import com.google.gwt.user.rebind.ClassSourceFileComposerFactory;
import com.google.gwt.user.rebind.SourceWriter;

public class SafeHtmlTemplatesCreator extends AbstractCreator {
    private final JMethod method;
    private final Set<String> methodNames = new LinkedHashSet<String>();
    private final Map<String, String> templates = new HashMap<String, String>();
    private final Map<String, List<String>> paramLists = new HashMap<String, List<String>>();

    public SafeHtmlTemplatesCreator(GeneratorContext ctx, TreeLogger l, JMethod method) {
        super(ctx, l);
        this.method = method;
    }

    /**
     * Creates a new method in the generated template.
     * 
     * @param template - the content to use for the template
     * @param params - the ordered types that will be used as parameters
     * @return the name of the method that has been created
     */
    public String addTemplate(String template, List<String> params) {
        String name = method.getName() + methodNames.size();
        assert !methodNames.contains(name) : "Method name already exists!";

        methodNames.add(name);
        templates.put(name, template);
        paramLists.put(name, params);

        return name;
    }

    @Override
    protected void configureFactory(ClassSourceFileComposerFactory factory) throws UnableToCompleteException {
        super.configureFactory(factory);
        factory.addImport(Name.getSourceNameForClass(SafeHtml.class));
        factory.addImport(Name.getSourceNameForClass(Template.class));
        factory.makeInterface();
    }

    @Override
    protected void create(SourceWriter sw) throws UnableToCompleteException {
        for (String method : methodNames) {
            sw.println("@Template(\"%1$s\")", escape(templates.get(method)));
            sw.println("SafeHtml %1$s(%2$s);", method, makeArgs(paramLists.get(method)));
        }
    }

    private static String escape(String string) {
        return string.replace("\\", "\\\\").replace("\"", "\\\"").replace("\n", "\\n").replace("\r", "\\r");
    }

    private String makeArgs(List<String> list) {
        StringBuilder sb = new StringBuilder();
        boolean first = true;
        for (int i = 0; i < list.size(); i++) {
            if (!first) {
                sb.append(", ");
            }
            first = false;
            sb.append(list.get(i)).append(" arg").append(i);
        }
        return sb.toString();
    }

    @Override
    protected JClassType getSupertype() {
        return getContext().getTypeOracle().findType(Name.getSourceNameForClass(SafeHtmlTemplates.class));
    }

    @Override
    public String getInstanceExpression() {
        return "GWT.<" + getPackageName() + "." + getSimpleName() + ">create(" + getPackageName() + "."
                + getSimpleName() + ".class)";
    }

    @Override
    protected String getPackageName() {
        return method.getEnclosingType().getPackage().getName();
    }

    @Override
    protected String getSimpleName() {
        StringBuilder sb = new StringBuilder(method.getEnclosingType().getName().replace('.', '_')).append("_");

        sb.append(method.getName()).append("_");

        sb.append(method.getReturnType().getSimpleSourceName()).append("__");

        for (JParameter p : method.getParameters()) {
            sb.append(p.getType().getSimpleSourceName()).append("_").append(p.getName()).append("__");
        }

        return sb.append("_SafeHtmlTemplates").toString();
    }

}