/*
 * Ext JS Library 2.0 Beta 2
 * Copyright(c) 2006-2007, Ext JS, LLC.
 * licensing@extjs.com
 * 
 * http://extjs.com/license
 */

Ext.app.App = function(cfg){
    Ext.apply(this, cfg);
    this.addEvents({
        'ready' : true,
        'beforeunload' : true
    });

    Ext.onReady(this.initApp, this);
};

Ext.extend(Ext.app.App, Ext.util.Observable, {
    isReady : false,
    modules : null, // Array of objects.  All initialized desktop modules
    startMenu : null,
    desktopConfig : null,

    initApp : function(){
        this.startConfig = this.startConfig || this.getStartConfig();
        this.desktop = new Ext.Desktop(this);
        this.startMenu = this.desktop.taskbar.startMenu;

        this.modules = this.getModules();
        if(this.modules){
            this.initModules(this.modules);
            this.initDesktopConfig();
        }

        this.init();

        Ext.EventManager.on(window, 'beforeunload', this.onUnload, this);
        this.fireEvent('ready', this);
        this.isReady = true;
    },

    getModules : Ext.emptyFn,
    getStartConfig : Ext.emptyFn,
    getDesktopConfig : Ext.emptyFn,
    init : Ext.emptyFn,

    initModules : function(ms){
        for(var i = 0, len = ms.length; i < len; i++){
            ms[i].app = this;
        }
    },
    
    initDesktopConfig : function(o){
        if(!o){
            this.getDesktopConfig();
        }else{
            this.desktopConfig = o;
            this.initDesktopContextMenu(o.desktopcontextmenu);
            this.initStartMenu(o.startmenu);
            this.initQuickStart(o.quickstart);
        }
    },
    
    initDesktopContextMenu : function(mIds){
        if(mIds){
            for(var i = 0, len = mIds.length; i < len; i++){
                var m = this.getModule(mIds[i]);
                if(m){
                    if(m.appType == 'menu'){ // handle menu modules
                        var items = m.items;
                        for(var i = 0, len = items.length; i < len; i++){
                            m.launcher.menu.items.push(this.getModule(items[i]).launcher);
                        }
                    }
                    this.desktop.cmenu.add(m.launcher);
                }
            }
        }
    },
    
    initStartMenu : function(mIds){
        if(mIds){
            for(var i = 0, len = mIds.length; i < len; i++){
                var m = this.getModule(mIds[i]);
                if(m){
                    if(m.appType == 'menu'){ // handle menu modules
                        var items = m.items;
                        
                        for(var i = 0, len = items.length; i < len; i++){
                            m.launcher.menu.items.push(this.getModule(items[i]).launcher);
                        }
                    }
                    this.startMenu.add(m.launcher);
                }
            }
        }
    },

    initQuickStart : function(mIds){
        if(mIds){
            for(var i = 0, len = mIds.length; i < len; i++){
                var m = this.getModule(mIds[i]);
                if(m){
                    m.quickStartButton = this.desktop.taskbar.addQuickStartButton(m.launcher);
                }
            }
        }
    },
    
    getModule : function(name){
        var ms = this.modules;
        for(var i = 0, len = ms.length; i < len; i++){
            if(ms[i].id == name || ms[i].appType == name){
                return ms[i];
            }
        }
        return '';
    },
    
    addQuickStartButton : function(id){
        var m = this.getModule(id);
        if(m && !m.quickStartButton){
            m.quickStartButton = this.desktop.taskbar.addQuickStartButton(m.launcher);
        }
    },
    
    removeQuickStartButton : function(id){
        var m = this.getModule(id);
        if(m && m.quickStartButton){
            this.desktop.taskbar.removeQuickStartButton(m.quickStartButton);
            m.quickStartButton = null;
        }
    },

    onReady : function(fn, scope){
        if(!this.isReady){
            this.on('ready', fn, scope);
        }else{
            fn.call(scope, this);
        }
    },

    getDesktop : function(){
        return this.desktop;
    },

    onUnload : function(e){
        if(this.fireEvent('beforeunload', this) === false){
            e.stopEvent();
        }
    }
});