/**

 * Back 2 Browser Bytecode Translator

 * Copyright (C) 2012 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.

 *

 * 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://opensource.org/licenses/GPL-2.0.

 */

package org.apidesign.bck2brwsr.htmlpage.api;

import org.apidesign.bck2brwsr.core.JavaScriptBody;

/** Represents a generic HTML element.

 *

 * @author Jaroslav Tulach <jtulach@netbeans.org>

 */

public abstract class Element {

    private final String id;

    public Element(String id) {

        this.id = id;

    }

    abstract void dontSubclass();

    @JavaScriptBody(

        args={"el", "property", "value"},

        body="var e = window.document.getElementById(el.fld_id);\n"

           + "e[property] = value;\n"

    )

    static void setAttribute(Element el, String property, Object value) {

        throw new UnsupportedOperationException("Needs JavaScript!");

    }

    @JavaScriptBody(

        args={"el", "property"},

        body="var e = window.document.getElementById(el.fld_id);\n"

           + "return e[property];\n"

    )

    static Object getAttribute(Element el, String property) {

        throw new UnsupportedOperationException("Needs JavaScript!");

    }

    /** Executes given runnable when user performs a "click" on the given

     * element.

     * @param r the runnable to execute, never null

     */

    @JavaScriptBody(

        args={"el", "r"},

        body="var e = window.document.getElementById(el.fld_id);\n"

           + "e.onclick = function() { r.run__V(); };\n"

    )

    public final void addOnClick(Runnable r) {

        throw new UnsupportedOperationException("Needs JavaScript!");

    }

}