/**

 * Back 2 Browser Bytecode Translator

 * Copyright (C) 2012-2015 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.kosample.js;

import net.java.html.js.JavaScriptBody;

/** Use {@link JavaScriptBody} annotation on methods to

 * directly interact with JavaScript. See

 * http://bits.netbeans.org/html+java/1.2/net/java/html/js/package-summary.html

 * to understand how.

 */

public final class Dialogs {

    private Dialogs() {

    }

    /** Shows confirmation dialog to the user.

     * 

     * @param msg the message

     * @param callback called back when the use accepts (can be null)

     */

    @JavaScriptBody(

        args = { "msg", "callback" }, 

        javacall = true, 

        body = "if (confirm(msg)) {\n"

             + "  callback.@java.lang.Runnable::run()();\n"

             + "}\n"

    )

    public static native void confirmByUser(String msg, Runnable callback);

    @JavaScriptBody(

        args = {}, body = 

        "var w = window,\n" +

        "    d = document,\n" +

        "    e = d.documentElement,\n" +

        "    g = d.getElementsByTagName('body')[0],\n" +

        "    x = w.innerWidth || e.clientWidth || g.clientWidth,\n" +

        "    y = w.innerHeight|| e.clientHeight|| g.clientHeight;\n" +

        "\n" +

        "return 'Screen size is ' + x + ' times ' + y;\n"

    )

    public static native String screenSize();

    @JavaScriptBody(args = { "id" }, body =

          "var e = window.document.getElementById(id);\n "

        + "var ev = window.document.createEvent('MouseEvents');\n "

        + "ev.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);\n "

        + "e.dispatchEvent(ev);\n "

    )

    public static native void triggerClick(String id);

}