jaroslav@26: /**
jaroslav@106:  * Back 2 Browser Bytecode Translator
jaroslav@106:  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jaroslav@26:  *
jaroslav@26:  * This program is free software: you can redistribute it and/or modify
jaroslav@26:  * it under the terms of the GNU General Public License as published by
jaroslav@26:  * the Free Software Foundation, version 2 of the License.
jaroslav@26:  *
jaroslav@26:  * This program is distributed in the hope that it will be useful,
jaroslav@26:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jaroslav@26:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jaroslav@26:  * GNU General Public License for more details.
jaroslav@26:  *
jaroslav@26:  * You should have received a copy of the GNU General Public License
jaroslav@26:  * along with this program. Look for COPYING file in the top folder.
jaroslav@26:  * If not, see http://opensource.org/licenses/GPL-2.0.
jaroslav@26:  */
jaroslav@26: package org.apidesign.bck2brwsr.htmlpage.api;
jaroslav@26: 
jaroslav@100: import org.apidesign.bck2brwsr.core.JavaScriptBody;
jaroslav@100: 
jaroslav@26: /** Represents a generic HTML element.
jaroslav@26:  *
jaroslav@26:  * @author Jaroslav Tulach <jtulach@netbeans.org>
jaroslav@26:  */
jaroslav@26: public abstract class Element {
jaroslav@26:     private final String id;
jaroslav@26:     
jaroslav@26:     public Element(String id) {
jaroslav@26:         this.id = id;
jaroslav@26:     }
jaroslav@26:     
jaroslav@530:     /** Id of the element in the document.
jaroslav@530:      * @return the id for this element
jaroslav@530:      */
jaroslav@530:     public String getId() {
jaroslav@530:         return id;
jaroslav@530:     }
jaroslav@530:     
jaroslav@871:     abstract void dontSubclass();
jaroslav@27:     
jaroslav@100:     @JavaScriptBody(
jaroslav@100:         args={"el", "property", "value"},
jaroslav@592:         body="var e = window.document.getElementById(el._id());\n"
jaroslav@100:            + "e[property] = value;\n"
jaroslav@100:     )
jaroslav@428:     static native void setAttribute(Element el, String property, Object value);
jaroslav@100: 
jaroslav@100:     @JavaScriptBody(
jaroslav@100:         args={"el", "property"},
jaroslav@592:         body="var e = window.document.getElementById(el._id());\n"
jaroslav@100:            + "return e[property];\n"
jaroslav@100:     )
jaroslav@428:     static native Object getAttribute(Element el, String property);
jaroslav@28:     
toni@521:     @JavaScriptBody(
toni@521:         args={"el"},
jaroslav@592:         body="return window.document.getElementById(el._id());"
toni@521:     )
toni@521:     static native Object getElementById(Element el);
toni@521:     
jaroslav@28:     /** Executes given runnable when user performs a "click" on the given
jaroslav@28:      * element.
jaroslav@813:      * @param data an array of one element to fill with event parameter (if any)
jaroslav@28:      * @param r the runnable to execute, never null
jaroslav@28:      */
jaroslav@100:     @JavaScriptBody(
jaroslav@443:         args={ "ev", "r" },
jaroslav@592:         body="var e = window.document.getElementById(this._id());\n"
jaroslav@813:            + "e[ev._id()] = function(ev) {\n"
jaroslav@813:         + "  var d = ev ? ev : null;\n"
jaroslav@813:         + "  r.onEvent__VLjava_lang_Object_2(d);\n"
jaroslav@813:         + "};\n"
jaroslav@100:     )
jaroslav@813:     final void on(OnEvent ev, OnHandler r) {
jaroslav@514:     }
jaroslav@428: 
jaroslav@428:     /** Shows alert message dialog in a browser.
jaroslav@428:      * @param msg the message to show
jaroslav@428:      */
jaroslav@428:     @JavaScriptBody(args = "msg", body = "alert(msg);")
jaroslav@428:     public static native void alert(String msg);
jaroslav@436: 
jaroslav@436:     /** Generic way to query any attribute of this element.
jaroslav@436:      * @param property name of the attribute
jaroslav@436:      */
jaroslav@436:     public final Object getAttribute(String property) {
jaroslav@436:         return getAttribute(this, property);
jaroslav@436:     }
jaroslav@428:     
jaroslav@436:     /** Generic way to change an attribute of this element.
jaroslav@436:      * 
jaroslav@436:      * @param property name of the attribute
jaroslav@436:      * @param value value to associate with the attribute
jaroslav@436:      */
jaroslav@436:     public final void setAttribute(String property, Object value) {
jaroslav@436:         setAttribute(this, property, value);
jaroslav@436:     }
jaroslav@26: }