mapo/js/main.js

/*

Copyright (c) 2013 Mapo developers and contributors <mapo.tizen@gmail.com>

This file is part of Mapo.

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, either version 3 of the License, or
(at your option) any later version.

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.  If not, see <http://www.gnu.org/licenses/>.

*/

var backEventListener = null;

var unregister = function() {
    if ( backEventListener !== null ) {
        document.removeEventListener( 'tizenhwkey', backEventListener );
        backEventListener = null;
        window.tizen.application.getCurrentApplication().exit();
    }
}

//Initialize function
var init = function () {
    // register once
    if ( backEventListener !== null ) {
        return;
    }
    
    // TODO:: Do your initialization job
    console.log("init() called");
    
    var backEvent = function(e) {
        if ( e.keyName == "back" ) {
            try {
                if ( $.mobile.urlHistory.activeIndex <= 0 ) {
                	quit();
                    // if first page, terminate app
                    unregister();
                } else {
                    // move previous page
                    $.mobile.urlHistory.activeIndex -= 1;
                    $.mobile.urlHistory.clearForward();
                    window.history.back();
                }
            } catch( ex ) {
                unregister();
            }
        } else if ( e.keyName == "menu") {
        	$.mobile.changePage("#settings");
        }
    }
    
    // add eventListener for tizenhwkey (Back Button)
    document.addEventListener( 'tizenhwkey', backEvent );
    backEventListener = backEvent;
    
  start();
};

$(document).bind( 'pageinit', init );
$(document).unload( unregister );