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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.InputStream;
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import java.io.OutputStreamWriter;
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import java.io.Writer;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.List;
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import java.util.Locale;
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import java.util.Set;
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import javax.annotation.processing.AbstractProcessor;
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import javax.annotation.processing.Completion;
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import javax.annotation.processing.Completions;
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import javax.annotation.processing.Processor;
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import javax.annotation.processing.RoundEnvironment;
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import javax.annotation.processing.SupportedAnnotationTypes;
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import javax.lang.model.element.AnnotationMirror;
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import javax.lang.model.element.Element;
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import javax.lang.model.element.ElementKind;
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import javax.lang.model.element.ExecutableElement;
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import javax.lang.model.element.Modifier;
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import javax.lang.model.element.PackageElement;
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import javax.lang.model.element.TypeElement;
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import javax.lang.model.element.VariableElement;
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import javax.lang.model.type.MirroredTypeException;
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import javax.lang.model.type.TypeMirror;
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import javax.tools.Diagnostic;
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import javax.tools.FileObject;
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import javax.tools.StandardLocation;
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import org.apidesign.bck2brwsr.htmlpage.api.ComputedProperty;
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import org.apidesign.bck2brwsr.htmlpage.api.On;
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import org.apidesign.bck2brwsr.htmlpage.api.Page;
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import org.apidesign.bck2brwsr.htmlpage.api.Property;
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import org.openide.util.lookup.ServiceProvider;
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/** Annotation processor to process an XHTML page and generate appropriate
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* "id" file.
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*
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* @author Jaroslav Tulach <jtulach@netbeans.org>
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*/
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@ServiceProvider(service=Processor.class)
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@SupportedAnnotationTypes({
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"org.apidesign.bck2brwsr.htmlpage.api.Page",
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"org.apidesign.bck2brwsr.htmlpage.api.On"
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})
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public final class PageProcessor extends AbstractProcessor {
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@Override
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public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
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for (Element e : roundEnv.getElementsAnnotatedWith(Page.class)) {
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Page p = e.getAnnotation(Page.class);
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PackageElement pe = (PackageElement)e.getEnclosingElement();
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String pkg = pe.getQualifiedName().toString();
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ProcessPage pp;
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try {
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InputStream is = openStream(pkg, p.xhtml());
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pp = ProcessPage.readPage(is);
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is.close();
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} catch (IOException iOException) {
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processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "Can't read " + p.xhtml(), e);
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return false;
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}
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Writer w;
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String className = p.className();
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if (className.isEmpty()) {
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int indx = p.xhtml().indexOf('.');
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className = p.xhtml().substring(0, indx);
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}
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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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jaroslav@28
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try {
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w.append("package " + pkg + ";\n");
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w.append("import org.apidesign.bck2brwsr.htmlpage.api.*;\n");
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w.append("class ").append(className).append(" {\n");
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w.append(" private ").append(className).append("() {}\n");
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jaroslav@28
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for (String id : pp.ids()) {
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jaroslav@28
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String tag = pp.tagNameForId(id);
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jaroslav@28
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String type = type(tag);
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w.append(" ").append("public static final ").
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append(type).append(' ').append(cnstnt(id)).append(" = new ").
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append(type).append("(\"").append(id).append("\");\n");
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}
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w.append(" static {\n");
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if (!initializeOnClick((TypeElement) e, w, pp)) {
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return false;
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jaroslav@28
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}
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w.append(" }\n");
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List<String> propsGetSet = new ArrayList<String>();
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generateProperties(w, p.properties(), propsGetSet);
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generateComputedProperties(w, e.getEnclosedElements(), propsGetSet);
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if (!propsGetSet.isEmpty()) {
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w.write("public static void applyBindings() {\n");
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w.write(" org.apidesign.bck2brwsr.htmlpage.Knockout.applyBindings(");
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w.write(className + ".class, new " + className + "(), ");
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w.write("new String[] {\n");
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String sep = "";
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for (String n : propsGetSet) {
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w.write(sep);
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if (n == null) {
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w.write(" null");
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} else {
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w.write(" \"" + n + "\"");
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}
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sep = ",\n";
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}
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w.write("\n });\n}\n");
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//w.write("static { applyBindings(); }\n");
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}
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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 false;
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}
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}
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return true;
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}
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jaroslav@26
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private InputStream openStream(String pkg, String name) throws IOException {
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jaroslav@26
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try {
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jaroslav@107
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FileObject fo = processingEnv.getFiler().getResource(
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StandardLocation.SOURCE_PATH, pkg, name);
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return fo.openInputStream();
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} catch (IOException ex) {
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jaroslav@26
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return processingEnv.getFiler().getResource(StandardLocation.CLASS_OUTPUT, pkg, name).openInputStream();
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}
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}
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private static String type(String tag) {
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if (tag.equals("title")) {
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return "Title";
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}
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if (tag.equals("button")) {
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return "Button";
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}
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if (tag.equals("input")) {
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return "Input";
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}
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return "Element";
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}
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jaroslav@26
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jaroslav@26
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private static String cnstnt(String id) {
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jaroslav@26
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return id.toUpperCase(Locale.ENGLISH).replace('.', '_');
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jaroslav@26
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}
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jaroslav@28
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private boolean initializeOnClick(TypeElement type, Writer w, ProcessPage pp) throws IOException {
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jaroslav@124
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TypeMirror stringType = processingEnv.getElementUtils().getTypeElement("java.lang.String").asType();
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jaroslav@489
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{ //for (Element clazz : pe.getEnclosedElements()) {
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jaroslav@489
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// if (clazz.getKind() != ElementKind.CLASS) {
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jaroslav@489
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// continue;
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// }
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jaroslav@489
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for (Element method : type.getEnclosedElements()) {
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jaroslav@435
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On oc = method.getAnnotation(On.class);
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jaroslav@28
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if (oc != null) {
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jaroslav@124
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for (String id : oc.id()) {
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jaroslav@124
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if (pp.tagNameForId(id) == null) {
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jaroslav@435
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processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "id = " + id + " does not exist in the HTML page. Found only " + pp.ids(), method);
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jaroslav@124
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return false;
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jaroslav@124
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}
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jaroslav@124
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ExecutableElement ee = (ExecutableElement)method;
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jaroslav@124
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boolean hasParam;
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jaroslav@124
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if (ee.getParameters().isEmpty()) {
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jaroslav@124
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hasParam = false;
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jaroslav@124
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186 |
} else {
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jaroslav@124
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if (ee.getParameters().size() != 1 || ee.getParameters().get(0).asType() != stringType) {
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jaroslav@435
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processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "@On method should either have no arguments or one String argument", ee);
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jaroslav@124
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return false;
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jaroslav@124
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}
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jaroslav@124
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hasParam = true;
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jaroslav@124
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}
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jaroslav@124
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if (!ee.getModifiers().contains(Modifier.STATIC)) {
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jaroslav@435
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processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "@On method has to be static", ee);
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jaroslav@124
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return false;
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jaroslav@124
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}
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jaroslav@124
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if (ee.getModifiers().contains(Modifier.PRIVATE)) {
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jaroslav@435
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processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "@On method can't be private", ee);
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jaroslav@124
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return false;
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jaroslav@124
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200 |
}
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jaroslav@435
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w.append(" OnEvent." + oc.event()).append(".of(").append(cnstnt(id)).
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jaroslav@435
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202 |
append(").perform(new Runnable() { public void run() {\n");
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jaroslav@124
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203 |
w.append(" ").append(type.getSimpleName().toString()).
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jaroslav@124
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204 |
append('.').append(ee.getSimpleName()).append("(");
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jaroslav@124
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205 |
if (hasParam) {
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jaroslav@124
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206 |
w.append("\"").append(id).append("\"");
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jaroslav@124
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}
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jaroslav@124
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w.append(");\n");
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jaroslav@124
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w.append(" }});\n");
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jaroslav@124
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210 |
}
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jaroslav@28
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211 |
}
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jaroslav@28
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212 |
}
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jaroslav@28
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213 |
}
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jaroslav@28
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214 |
return true;
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jaroslav@28
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215 |
}
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jaroslav@117
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216 |
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jaroslav@117
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217 |
@Override
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jaroslav@117
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218 |
public Iterable<? extends Completion> getCompletions(
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jaroslav@117
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219 |
Element element, AnnotationMirror annotation,
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jaroslav@117
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220 |
ExecutableElement member, String userText
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jaroslav@117
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) {
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jaroslav@117
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222 |
if (!userText.startsWith("\"")) {
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jaroslav@117
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223 |
return Collections.emptyList();
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jaroslav@117
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224 |
}
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jaroslav@117
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225 |
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jaroslav@117
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226 |
Element cls = findClass(element);
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jaroslav@117
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227 |
Page p = cls.getAnnotation(Page.class);
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jaroslav@117
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228 |
PackageElement pe = (PackageElement) cls.getEnclosingElement();
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jaroslav@117
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229 |
String pkg = pe.getQualifiedName().toString();
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jaroslav@117
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230 |
ProcessPage pp;
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jaroslav@117
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231 |
try {
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jaroslav@117
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232 |
InputStream is = openStream(pkg, p.xhtml());
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jaroslav@117
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233 |
pp = ProcessPage.readPage(is);
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jaroslav@117
|
234 |
is.close();
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jaroslav@117
|
235 |
} catch (IOException iOException) {
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jaroslav@117
|
236 |
return Collections.emptyList();
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jaroslav@117
|
237 |
}
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jaroslav@117
|
238 |
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jaroslav@117
|
239 |
List<Completion> cc = new ArrayList<Completion>();
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jaroslav@117
|
240 |
userText = userText.substring(1);
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jaroslav@117
|
241 |
for (String id : pp.ids()) {
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jaroslav@117
|
242 |
if (id.startsWith(userText)) {
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jaroslav@117
|
243 |
cc.add(Completions.of("\"" + id + "\"", id));
|
jaroslav@117
|
244 |
}
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jaroslav@117
|
245 |
}
|
jaroslav@117
|
246 |
return cc;
|
jaroslav@117
|
247 |
}
|
jaroslav@117
|
248 |
|
jaroslav@117
|
249 |
private static Element findClass(Element e) {
|
jaroslav@117
|
250 |
if (e == null) {
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jaroslav@117
|
251 |
return null;
|
jaroslav@117
|
252 |
}
|
jaroslav@117
|
253 |
Page p = e.getAnnotation(Page.class);
|
jaroslav@117
|
254 |
if (p != null) {
|
jaroslav@117
|
255 |
return e;
|
jaroslav@117
|
256 |
}
|
jaroslav@117
|
257 |
return e.getEnclosingElement();
|
jaroslav@117
|
258 |
}
|
jaroslav@490
|
259 |
|
jaroslav@492
|
260 |
private static void generateProperties(
|
jaroslav@492
|
261 |
Writer w, Property[] properties, Collection<String> props
|
jaroslav@492
|
262 |
) throws IOException {
|
jaroslav@490
|
263 |
for (Property p : properties) {
|
jaroslav@492
|
264 |
final String tn = typeName(p);
|
jaroslav@492
|
265 |
String[] gs = toGetSet(p.name(), tn);
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jaroslav@490
|
266 |
|
jaroslav@490
|
267 |
w.write("private static " + tn + " prop_" + p.name() + ";\n");
|
jaroslav@490
|
268 |
w.write("public static " + tn + " " + gs[0] + "() {\n");
|
jaroslav@490
|
269 |
w.write(" return prop_" + p.name() + ";\n");
|
jaroslav@490
|
270 |
w.write("}\n");
|
jaroslav@490
|
271 |
w.write("public static void " + gs[1] + "(" + tn + " v) {\n");
|
jaroslav@490
|
272 |
w.write(" prop_" + p.name() + " = v;\n");
|
jaroslav@490
|
273 |
w.write("}\n");
|
jaroslav@492
|
274 |
|
jaroslav@492
|
275 |
props.add(p.name());
|
jaroslav@492
|
276 |
props.add(gs[2]);
|
jaroslav@492
|
277 |
props.add(gs[3]);
|
jaroslav@490
|
278 |
}
|
jaroslav@490
|
279 |
}
|
jaroslav@490
|
280 |
|
jaroslav@492
|
281 |
private void generateComputedProperties(
|
jaroslav@492
|
282 |
Writer w, Collection<? extends Element> arr, Collection<String> props
|
jaroslav@492
|
283 |
) throws IOException {
|
jaroslav@491
|
284 |
for (Element e : arr) {
|
jaroslav@491
|
285 |
if (e.getKind() != ElementKind.METHOD) {
|
jaroslav@491
|
286 |
continue;
|
jaroslav@491
|
287 |
}
|
jaroslav@491
|
288 |
if (e.getAnnotation(ComputedProperty.class) == null) {
|
jaroslav@491
|
289 |
continue;
|
jaroslav@491
|
290 |
}
|
jaroslav@491
|
291 |
ExecutableElement ee = (ExecutableElement)e;
|
jaroslav@492
|
292 |
final String tn = ee.getReturnType().toString();
|
jaroslav@492
|
293 |
String[] gs = toGetSet(ee.getSimpleName().toString(), tn);
|
jaroslav@491
|
294 |
|
jaroslav@491
|
295 |
w.write("public static " + tn + " " + gs[0] + "() {\n");
|
jaroslav@491
|
296 |
w.write(" return " + e.getEnclosingElement().getSimpleName() + '.' + e.getSimpleName() + "(");
|
jaroslav@491
|
297 |
String sep = "";
|
jaroslav@491
|
298 |
for (VariableElement pe : ee.getParameters()) {
|
jaroslav@492
|
299 |
String[] call = toGetSet(pe.getSimpleName().toString(), pe.asType().toString());
|
jaroslav@491
|
300 |
w.write(sep);
|
jaroslav@491
|
301 |
w.write(call[0] + "()");
|
jaroslav@491
|
302 |
sep = ", ";
|
jaroslav@491
|
303 |
}
|
jaroslav@491
|
304 |
w.write(");\n");
|
jaroslav@491
|
305 |
w.write("}\n");
|
jaroslav@492
|
306 |
|
jaroslav@492
|
307 |
props.add(e.getSimpleName().toString());
|
jaroslav@492
|
308 |
props.add(gs[2]);
|
jaroslav@492
|
309 |
props.add(null);
|
jaroslav@491
|
310 |
}
|
jaroslav@491
|
311 |
}
|
jaroslav@491
|
312 |
|
jaroslav@492
|
313 |
private static String[] toGetSet(String name, String type) {
|
jaroslav@491
|
314 |
String n = Character.toUpperCase(name.charAt(0)) + name.substring(1);
|
jaroslav@492
|
315 |
String bck2brwsrType = "L" + type.replace('.', '_') + "_2";
|
jaroslav@492
|
316 |
if ("int".equals(type)) {
|
jaroslav@492
|
317 |
bck2brwsrType = "I";
|
jaroslav@492
|
318 |
}
|
jaroslav@492
|
319 |
if ("double".equals(type)) {
|
jaroslav@492
|
320 |
bck2brwsrType = "D";
|
jaroslav@492
|
321 |
}
|
jaroslav@492
|
322 |
String pref = "get";
|
jaroslav@492
|
323 |
if ("boolean".equals(type)) {
|
jaroslav@492
|
324 |
pref = "is";
|
jaroslav@492
|
325 |
bck2brwsrType = "Z";
|
jaroslav@492
|
326 |
}
|
jaroslav@492
|
327 |
return new String[]{
|
jaroslav@492
|
328 |
pref + n,
|
jaroslav@492
|
329 |
"set" + n,
|
jaroslav@492
|
330 |
pref + n + "__" + bck2brwsrType,
|
jaroslav@492
|
331 |
"set" + n + "__V" + bck2brwsrType
|
jaroslav@492
|
332 |
};
|
jaroslav@490
|
333 |
}
|
jaroslav@490
|
334 |
|
jaroslav@490
|
335 |
private static String typeName(Property p) {
|
jaroslav@490
|
336 |
try {
|
jaroslav@490
|
337 |
return p.type().getName();
|
jaroslav@490
|
338 |
} catch (MirroredTypeException ex) {
|
jaroslav@490
|
339 |
if (ex.getTypeMirror().getKind().isPrimitive()) {
|
jaroslav@490
|
340 |
return ex.getTypeMirror().toString();
|
jaroslav@490
|
341 |
}
|
jaroslav@490
|
342 |
throw ex;
|
jaroslav@490
|
343 |
}
|
jaroslav@490
|
344 |
}
|
jaroslav@26
|
345 |
}
|