| /** |
| * HTML via Java(tm) Language Bindings |
| * Copyright (C) 2013 Jaroslav Tulach <jaroslav.tulach@apidesign.org> |
| * |
| * This program is free software: you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation, version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. apidesign.org |
| * designates this particular file as subject to the |
| * "Classpath" exception as provided by apidesign.org |
| * in the License file that accompanied this code. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program. Look for COPYING file in the top folder. |
| * If not, see http://wiki.apidesign.org/wiki/GPLwithClassPathException |
| */ |
| package org.apidesign.html.ko2brwsr; |
| |
| import java.lang.reflect.Method; |
| import java.util.List; |
| import org.apidesign.bck2brwsr.core.ExtraJavaScript; |
| import org.apidesign.bck2brwsr.core.JavaScriptBody; |
| |
| /** Provides binding between models and bck2brwsr VM. |
| * |
| * @author Jaroslav Tulach <jtulach@netbeans.org> |
| */ |
| @ExtraJavaScript(resource = "/org/apidesign/bck2brwsr/htmlpage/knockout-2.2.1.js") |
| final class Knockout { |
| /** used by tests */ |
| static Knockout next; |
| private final Object model; |
| |
| Knockout(Object model) { |
| this.model = model == null ? this : model; |
| } |
| |
| public static <M> Knockout applyBindings( |
| Object model, String[] propsGettersAndSetters, |
| String[] methodsAndSignatures |
| ) { |
| applyImpl(propsGettersAndSetters, model.getClass(), model, model, methodsAndSignatures); |
| return new Knockout(model); |
| } |
| public static <M> Knockout applyBindings( |
| Class<M> modelClass, M model, String[] propsGettersAndSetters, |
| String[] methodsAndSignatures |
| ) { |
| Knockout bindings = next; |
| next = null; |
| if (bindings == null) { |
| bindings = new Knockout(null); |
| } |
| applyImpl(propsGettersAndSetters, modelClass, bindings, model, methodsAndSignatures); |
| applyBindings(bindings); |
| return bindings; |
| } |
| |
| public void valueHasMutated(String prop) { |
| valueHasMutated(model, prop); |
| } |
| @JavaScriptBody(args = { "self", "prop" }, body = |
| "var p = self[prop]; if (p) p.valueHasMutated();" |
| ) |
| public static void valueHasMutated(Object self, String prop) { |
| } |
| |
| |
| @JavaScriptBody(args = { "id", "ev" }, body = "ko.utils.triggerEvent(window.document.getElementById(id), ev.substring(2));") |
| public static void triggerEvent(String id, String ev) { |
| } |
| |
| @JavaScriptBody(args = { "bindings", "model", "prop", "getter", "setter", "primitive", "array" }, body = |
| "var bnd = {\n" |
| + " 'read': function() {\n" |
| + " var v = model[getter]();\n" |
| + " if (array) v = v.koArray();\n" |
| + " return v;\n" |
| + " },\n" |
| + " 'owner': bindings\n" |
| + "};\n" |
| + "if (setter != null) {\n" |
| + " bnd['write'] = function(val) {\n" |
| + " model[setter](primitive ? new Number(val) : val);\n" |
| + " };\n" |
| + "}\n" |
| + "bindings[prop] = ko['computed'](bnd);" |
| ) |
| static void bind( |
| Object bindings, Object model, String prop, String getter, String setter, boolean primitive, boolean array |
| ) { |
| } |
| |
| @JavaScriptBody(args = { "bindings", "model", "prop", "sig" }, body = |
| "bindings[prop] = function(data, ev) { model[sig](data, ev); };" |
| ) |
| static void expose( |
| Object bindings, Object model, String prop, String sig |
| ) { |
| } |
| |
| @JavaScriptBody(args = { "bindings" }, body = "ko.applyBindings(bindings);") |
| static void applyBindings(Object bindings) {} |
| |
| private static void applyImpl( |
| String[] propsGettersAndSetters, |
| Class<?> modelClass, |
| Object bindings, |
| Object model, |
| String[] methodsAndSignatures |
| ) throws IllegalStateException, SecurityException { |
| for (int i = 0; i < propsGettersAndSetters.length; i += 4) { |
| try { |
| Method getter = modelClass.getMethod(propsGettersAndSetters[i + 3]); |
| bind(bindings, model, propsGettersAndSetters[i], |
| propsGettersAndSetters[i + 1], |
| propsGettersAndSetters[i + 2], |
| getter.getReturnType().isPrimitive(), |
| List.class.isAssignableFrom(getter.getReturnType())); |
| } catch (NoSuchMethodException ex) { |
| throw new IllegalStateException(ex.getMessage()); |
| } |
| } |
| for (int i = 0; i < methodsAndSignatures.length; i += 2) { |
| expose( |
| bindings, model, methodsAndSignatures[i], methodsAndSignatures[i + 1]); |
| } |
| } |
| } |