Strange behaviour : Dynamic Tabs with Grids using Viewport

[pgraju]

Hi all

First of all here is my situation:

I have created a Toolbar which has menu items, when a Menu Item is clicked a Tab is dynamically added to the 'Center' Region of my Viewport layout at the same time the Tab is added I also add a Grid to it.

The problem:

The grid displays fine but no data is visible also there is a strange effect when I maximize the browser the grid stays cut off and doesnt resize/rerender - see the screenshot.

Firstly I create my Grid:

Ext.ns('Example');
 
Ext.BLANK_IMAGE_URL = 'ext/resources/images/default/s.gif';
 
Example.Grid = Ext.extend(Ext.grid.GridPanel, {
    initComponent:function() {
        Ext.apply(this, {
             store: new Ext.data.SimpleStore({
                 id:0
                ,fields:[
                    {name: 'company'}
                   ,{name: 'price', type: 'float'}
                   ,{name: 'change', type: 'float'}
                   ,{name: 'pctChange', type: 'float'}
                   ,{name: 'lastChange', type: 'date', dateFormat: 'n/j h:ia'}
                   ,{name: 'industry'}
                   ,{name: 'desc'}
                ]
                ,data:[
                    ['3m Co',71.72,0.02,0.03,'8/1 12:00am', 'Manufacturing'],
                    ['Alcoa Inc',29.01,0.42,1.47,'9/1 12:00am', 'Manufacturing'],
                    ['Altria Group Inc',83.81,0.28,0.34,'10/1 12:00am', 'Manufacturing'],
                    ['American Express Company',52.55,0.01,0.02,'9/1 10:00am', 'Finance'],
                    ['American International Group, Inc.',64.13,0.31,0.49,'9/1 11:00am', 'Services'],
                    ['AT&T Inc.',31.61,-0.48,-1.54,'9/1 12:00am', 'Services'],
                    ['Boeing Co.',75.43,0.53,0.71,'9/1 12:00am', 'Manufacturing'],
                    ['Caterpillar Inc.',67.27,0.92,1.39,'9/1 12:00am', 'Services'],
                    ['Citigroup, Inc.',49.37,0.02,0.04,'9/1 12:00am', 'Finance'],
                    ['E.I. du Pont de Nemours and Company',40.48,0.51,1.28,'9/1 12:00am', 'Manufacturing'],
                    ['Exxon Mobil Corp',68.1,-0.43,-0.64,'9/1 12:00am', 'Manufacturing'],
                    ['General Electric Company',34.14,-0.08,-0.23,'9/1 12:00am', 'Manufacturing'],
                    ['General Motors Corporation',30.27,1.09,3.74,'9/1 12:00am', 'Automotive'],
                    ['Hewlett-Packard Co.',36.53,-0.03,-0.08,'9/1 12:00am', 'Computer'],
                    ['Honeywell Intl Inc',38.77,0.05,0.13,'9/1 12:00am', 'Manufacturing'],
                    ['Intel Corporation',19.88,0.31,1.58,'9/1 12:00am', 'Computer'],
                    ['International Business Machines',81.41,0.44,0.54,'9/1 12:00am', 'Computer'],
                    ['Johnson & Johnson',64.72,0.06,0.09,'9/1 12:00am', 'Medical'],
                    ['JP Morgan & Chase & Co',45.73,0.07,0.15,'9/1 12:00am', 'Finance'],
                    ['McDonald\'s Corporation',36.76,0.86,2.40,'9/1 12:00am', 'Food'],
                    ['Merck & Co., Inc.',40.96,0.41,1.01,'9/1 12:00am', 'Medical'],
                    ['Microsoft Corporation',25.84,0.14,0.54,'9/1 12:00am', 'Computer'],
                    ['Pfizer Inc',27.96,0.4,1.45,'9/1 12:00am', 'Services', 'Medical'],
                    ['The Coca-Cola Company',45.07,0.26,0.58,'9/1 12:00am', 'Food'],
                    ['The Home Depot, Inc.',34.64,0.35,1.02,'9/1 12:00am', 'Retail'],
                    ['The Procter & Gamble Company',61.91,0.01,0.02,'9/1 12:00am', 'Manufacturing'],
                    ['United Technologies Corporation',63.26,0.55,0.88,'9/1 12:00am', 'Computer'],
                    ['Verizon Communications',35.57,0.39,1.11,'9/1 12:00am', 'Services'],
                    ['Wal-Mart Stores, Inc.',45.45,0.73,1.63,'9/1 12:00am', 'Retail'],
                    ['Walt Disney Company (The) (Holding Company)',29.89,0.24,0.81,'9/1 12:00am', 'Services']
                ]
            })
            ,columns:[
                 {id:'company',header: "Company", width: 40, sortable: true, dataIndex: 'company'}
                ,{header: "Price", width: 20, sortable: true, renderer: Ext.util.Format.usMoney, dataIndex: 'price'}
                ,{header: "Change", width: 20, sortable: true, dataIndex: 'change'}
                ,{header: "% Change", width: 20, sortable: true, dataIndex: 'pctChange'}
                ,{header: "Last Updated", width: 20, sortable: true, renderer: Ext.util.Format.dateRenderer('m/d/Y'), dataIndex: 'lastChange'}
            ]
            ,viewConfig:{forceFit:true}
            ,bbar:[]
            ,plugins:[new Ext.ux.grid.Search({
                mode:'local'
            })]
        }); // eo apply

        // call parent
        Example.Grid.superclass.initComponent.apply(this, arguments);
    } // eo function initComponent

});

Then I create my toolbar menu with items:

 Ext.onReady(function(){  

Ext.QuickTips.init();

// Create the Navigation Toolbar
    var menu = new Ext.menu.Menu({
        id: 'mainMenu',
        items: [{
                    text: 'Sports',
                    iconCls: 'bsports',
                    handler:     function(){ updateTab('11','Sports','bsports'); }
                }]
});

Then I create the Tab Panel and store it as a variable:

    var tabs = new Ext.TabPanel({
                region:'center',
                layoutOnTabChange: true,
                activeTab:0,
                style: 'padding-left:5px;',
                enableTabScroll:true,
                items:[{
                    id: '01',
                    title: 'Home',
                    iconCls: 'bhome',
                    autoScroll:true,
                }]
            })

Then I create my Viewport:

ar p = new Ext.Viewport({
            layout: 'border',
            style: 'padding: 10px;',
            items : [
                tabs,                //Tab panel as center
            {
                //...north region
                bbar:new Ext.Toolbar({
                    iconCls: 'bteams',
                    id:'toolbar',
                    style: 'border: 1px solid #99bbe8',
                    items:[{
                                text:'Home',
                                iconCls: 'bhome',
                                handler: function(){ updateTab('01','Home','bhome'); }
                            },'-',{
                                text:'Manage',
                                iconCls: 'bteams',
                                menu: menu
                            }
                            ]
                    })      
            },{
               //...south region
                    })
            }
            ]
    });

Here is my UpdateTab function which checks if a tab is already added:

function updateTab(tabId,title,cls) {
        var tab = tabs.getItem(tabId);
        if(tab){
//do nothing
        }else{
            tab = addTab(tabId,title,cls);
        }
        tabs.setActiveTab(tab);
    }

Here is the function to add the Tab with a Grid:

    function addTab(tabId,title,cls){
        tabs.add({
            title: title,
            id: tabId,
            iconCls: cls,
            closable:true,
            items: [{
                    title:'Grid Tab'
                    ,id:'gridtab'
                    ,xtype:'examplegrid'
                    ,autoScroll:true
            }]
        }).show();
    }

Can anyone identify why I can't seem to display any data and also why there are some strange rendering issues?

Thanks in advance!

[Animal]

The problem is that you are wrapping the Grid inside a no-layout Panel, and then adding that Panel to the TabPanel!

Simple add the Grid to the TabPanel as quite clearly explained in the docs: http://extjs.com/deploy/dev/docs/?class=Ext.Container

[jay@moduscreate.com]

No need to nest like that:

    function addTab(tabId,title,cls){
        tabs.add({
            title: title,
            iconCls: cls,
            closable:true,
                    ,id:'gridtab'
                    ,xtype:'examplegrid'
        }).show();
    }

I would highly suggest you stick to ONE type of comma structure.

[pgraju]

Thanks heaps guys!