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/**
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* Back 2 Browser Bytecode Translator
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* Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. Look for COPYING file in the top folder.
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* If not, see http://opensource.org/licenses/GPL-2.0.
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*/
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package org.apidesign.bck2brwsr.htmlpage;
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import java.io.IOException;
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import java.io.OutputStreamWriter;
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import java.io.Writer;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Map.Entry;
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import java.util.ServiceLoader;
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import javax.annotation.processing.ProcessingEnvironment;
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import javax.lang.model.element.Element;
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import javax.tools.Diagnostic;
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import javax.tools.FileObject;
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import org.netbeans.modules.html.editor.lib.api.HtmlVersion;
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import org.netbeans.modules.html.editor.lib.api.model.HtmlModel;
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import org.netbeans.modules.html.editor.lib.api.model.HtmlModelProvider;
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import org.netbeans.modules.html.editor.lib.api.model.HtmlTag;
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import org.netbeans.modules.html.editor.lib.api.model.HtmlTagAttribute;
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/**
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*
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* @author Jan Horvath <jhorvath@netbeans.org>
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*/
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public class ElementGenerator {
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static final Map<String, String> NAMING_EXCEPTIONS = new HashMap<String, String>() {
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{
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put("img", "Image");
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put("class", "Clazz");
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}
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};
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static final String javaKeywords[] = {
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"abstract", "assert", "boolean", "break", "byte", "case",
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"catch", "char", "class", "const", "continue", "default",
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"do", "double", "else", "extends", "false", "final", "finally",
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"float", "for", "goto", "if", "implements", "import",
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"instanceof", "int", "interface", "long", "native", "new",
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"null", "package", "private", "protected", "public",
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"return", "short", "static", "strictfp", "super",
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"switch", "synchronized", "this", "throw", "throws",
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"transient", "true", "try", "void", "volatile", "while"
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};
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private static Map<String, String> elements = new HashMap<String, String>();
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private final ProcessingEnvironment processingEnv;
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private HtmlModel model = null;
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ElementGenerator(ProcessingEnvironment processingEnv) {
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this.processingEnv = processingEnv;
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}
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String getType(String pkg, String tag, Element e) {
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String className = elements.get(tag);
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if (className == null) {
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className = createClass(pkg, tag, e);
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elements.put(tag, className);
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}
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return className;
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}
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private String createClass(String pkg, String tag, Element e) {
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String className = className(tag);
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Writer w;
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try {
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FileObject java = processingEnv.getFiler().createSourceFile(pkg + '.' + className, e);
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w = new OutputStreamWriter(java.openOutputStream());
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try {
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w.append("package " + pkg + ";\n\n");
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w.append("import org.apidesign.bck2brwsr.htmlpage.api.*;\n");
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PredefinedFields.appendImports(w, tag);
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w.append("\n");
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w.append("class ").append(className).append(" extends Element {\n\n");
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w.append(" public ").append(className).append("(String id) {\n");
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w.append(" super(id);\n");
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w.append(" }\n\n");
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for (Entry<String, String> entry : getAttributes(tag).entrySet()) {
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String attrName = entry.getKey();
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String attrType = entry.getValue();
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// getter
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w.append(" public ").append(attrType).append(" ")
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.append("get").append(className(attrName)).append("() {\n");
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w.append(" return (").append(attrType).append(")getAttribute(\"")
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.append(attrName).append("\");\n");
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w.append(" }\n\n");
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// setter
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w.append(" public void ")
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.append("set").append(className(attrName)).append("(")
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.append(attrType).append(" ").append(attributeName(attrName)).append(") {\n");
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w.append(" setAttribute(\"").append(attrName).append("\", ").append(attributeName(attrName)).append(");\n");
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w.append(" }\n\n");
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}
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PredefinedFields.appendFields(w, tag);
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w.append("}\n");
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} finally {
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w.close();
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}
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} catch (IOException ex) {
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processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "Can't create " + className + ".java", e);
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return null;
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}
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return className;
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}
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Map<String, String> getAttributes(String tagName) {
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Map<String, String> result = new HashMap<String, String>();
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if (model == null) {
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// HtmlModelProvider modelProvider = Lookup.getDefault().lookup(HtmlModelProvider.class);
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ServiceLoader<HtmlModelProvider> hmpLoader =
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ServiceLoader.load(HtmlModelProvider.class, this.getClass().getClassLoader());
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for (HtmlModelProvider htmlModelProvider : hmpLoader) {
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model = htmlModelProvider.getModel(HtmlVersion.HTML5);
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if (model != null) {
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break;
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}
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}
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}
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if (model == null) {
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processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR,
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"HTML 5 model provider was not found on classpath");
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return Collections.emptyMap();
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}
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HtmlTag tag = model.getTag(tagName);
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for (HtmlTagAttribute attr : tag.getAttributes()) {
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String name = attr.getName();
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String type = Attributes.TYPES.get(name);
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if (type != null) {
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result.put(name, type);
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}
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}
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return result;
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}
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private String className(String s) {
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if (s.length() == 0) {
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return s;
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}
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String name = NAMING_EXCEPTIONS.get(s.toLowerCase());
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if (name == null) {
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name = s.substring(0, 1).toUpperCase() + s.substring(1).toLowerCase();
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}
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return name;
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}
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private String attributeName(String s) {
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if (Arrays.binarySearch(javaKeywords, s) >= 0) {
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return String.format("%sAttr", s);
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}
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return s;
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}
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}
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