In order to support fields of the same name in subclasses we are now prefixing them with name of the class that defines them. To provide convenient way to access them from generated bytecode and also directly from JavaScript, there is a getter/setter function for each field. It starts with _ followed by the field name. If called with a parameter, it sets the field, with a parameter it just returns it.
2 * Back 2 Browser Bytecode Translator
3 * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. Look for COPYING file in the top folder.
16 * If not, see http://opensource.org/licenses/GPL-2.0.
18 package org.apidesign.bck2brwsr.htmlpage.api;
20 import org.apidesign.bck2brwsr.core.JavaScriptBody;
22 /** Represents a generic HTML element.
24 * @author Jaroslav Tulach <jtulach@netbeans.org>
26 public abstract class Element {
27 private final String id;
29 public Element(String id) {
33 /** Id of the element in the document.
34 * @return the id for this element
36 public String getId() {
40 abstract void dontSubclass();
43 args={"el", "property", "value"},
44 body="var e = window.document.getElementById(el._id());\n"
45 + "e[property] = value;\n"
47 static native void setAttribute(Element el, String property, Object value);
50 args={"el", "property"},
51 body="var e = window.document.getElementById(el._id());\n"
52 + "return e[property];\n"
54 static native Object getAttribute(Element el, String property);
58 body="return window.document.getElementById(el._id());"
60 static native Object getElementById(Element el);
62 /** Executes given runnable when user performs a "click" on the given
64 * @param r the runnable to execute, never null
68 body="var e = window.document.getElementById(this._id());\n"
69 + "e[ev._id()] = function() { r.run__V(); };\n"
71 final void on(OnEvent ev, Runnable r) {
74 /** Shows alert message dialog in a browser.
75 * @param msg the message to show
77 @JavaScriptBody(args = "msg", body = "alert(msg);")
78 public static native void alert(String msg);
80 /** Generic way to query any attribute of this element.
81 * @param property name of the attribute
83 public final Object getAttribute(String property) {
84 return getAttribute(this, property);
87 /** Generic way to change an attribute of this element.
89 * @param property name of the attribute
90 * @param value value to associate with the attribute
92 public final void setAttribute(String property, Object value) {
93 setAttribute(this, property, value);