/**

 * 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;

import static org.apidesign.bck2brwsr.htmlpage.api.OnEvent.*;

import org.apidesign.bck2brwsr.htmlpage.api.On;

import org.apidesign.bck2brwsr.htmlpage.api.Page;

/** Trivial demo for the bck2brwsr project. First of all start

 * with <a href="TestPage.html">your XHTML page</a>. Include there

 * a script that will <em>boot Java</em> in your browser.

 * <p>

 * Then use <code>@Page</code> annotation to 

 * generate a Java representation of elements with IDs in that page.

 * Depending on the type of the elements, they will have different 

 * methods (e.g. <code>PG_TITLE</code> has <code>setText</code>, etc.).

 * Use <code>@OnClick</code> annotation to associate behavior

 * with existing elements. Use the generated elements

 * (<code>PG_TITLE</code>, <code>PG_TEXT</code>) to modify the page.

 * <p>

 * Everything is type-safe. As soon as somebody modifies the page and

 * removes the IDs or re-assigns them to wrong elements. Java compiler

 * will emit an error.

 * <p>

 * Welcome to the type-safe HTML5 world!

 *

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

 */

@Page(xhtml="TestPage.html")

public class PageController {

    private static final TestPage PAGE = new TestPage();

    @On(event = CLICK, id="pg.button")

    static void updateTitle(TestPage ref) {

        if (PAGE != ref) {

            throw new IllegalStateException("Both references should be the same. " + ref + " != " + PAGE);

        }

        ref.pg_title.setText("You want this window to be named " + ref.pg_text.getValue());

    }

    @On(event = CLICK, id={ "pg.title", "pg.text" })

    static void click(String id) {

        if (!id.equals("pg.title")) {

            throw new IllegalStateException();

        }

        PAGE.pg_title.setText(id);

    }

    @On(event = CLICK, id={ "pg.canvas" })

    static void clickCanvas(String id, double layerX) {

        PAGE.pg_canvas.setWidth((int) layerX);

    }

}