/*
 *    Always On Top extension for Ext JS 4.x
 *
 *    Copyright (c) 2011 Eirik Lorentsen (http://www.eirik.net/)
 *
 *    Examples and documentation at: http://www.eirik.net/Ext/ux/util/AlwaysOnTop.html
 *
 *    Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php) 
 *    and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 *
 *    Version: 1.1
 *    Last changed date: 2011-12-22
 */

Ext.define('Ext.ux.util.AlwaysOnTop', {
    extend: 'Ext.app.Controller',

    alwaysOnTopManager: null,

    init: function() {
        this.control({
            'component{isFloating()}': {
                'render': function (component, options) {
                    this.onComponentRender(component, options);
                }
            }
        });
        /* Uncommenting the code below makes sure that all Ext.window.MessageBoxes stay on top. */
        /*
        Ext.override(Ext.window.MessageBox, {
            alwaysOnTop: true
        });
        */
        /* Uncommenting the code below makes sure that all form errormessages stay on top.
           Necessary if you have a form inside a alwaysOnTop window. */
        /*
        Ext.override(Ext.tip.ToolTip, {
            alwaysOnTop: true
        });
        */
    },

    onComponentRender: function (component, options) {
        if (component.alwaysOnTop) {
            if (!this.alwaysOnTopManager) {
                this.alwaysOnTopManager = Ext.create('Ext.ZIndexManager');
            }
            this.alwaysOnTopManager.register(component);
        }
        if (this.alwaysOnTopManager) {
            /* Making sure the alwaysOnTopManager always has the highest zseed */
            if (Ext.ZIndexManager.zBase > this.alwaysOnTopManager.zseed) {
                this.alwaysOnTopManager.zseed = this.alwaysOnTopManager.getNextZSeed();
            }
        }
    }

});