Exemplo ExtJS 4: Basic Array Grid em MVC

Começando com o primeiro exemplo MVC de ExtJS 4 aqui no blog. Hoje vamos ver o código do exemplo Basic Array Grid.

Vamos ao código então!

Obs.: passei por um probleminha durante a transformação desse exemplo, e acabei postando um post sobre a explicação de actioncolumns no MVC aqui.

Estrutura do Projeto

Model

[code lang="js" firstline="1" toolbar="true" collapse="false" wraplines="false"]
Ext.define('Ext4Example.model.Stock', {
extend: 'Ext.data.Model',
fields: [
{name: 'company'},
{name: 'price', type: 'float'},
{name: 'change', type: 'float'},
{name: 'pctChange', type: 'float'},
{name: 'lastChange', type: 'date', dateFormat: 'm-d-Y'}
]
});
[/code]

Store

[code lang="js" firstline="1" toolbar="true" collapse="false" wraplines="false"]
Ext.define('Ext4Example.store.Stocks', {
extend: 'Ext.data.ArrayStore',
model: 'Ext4Example.model.Stock',
data: [
['3m Co', 71.72, 0.02, 0.03, '9/1 12:00am'],
['Alcoa Inc', 29.01, 0.42, 1.47, '9/1 12:00am'],
['Altria Group Inc', 83.81, 0.28, 0.34, '9/1 12:00am'],
['American Express Company', 52.55, 0.01, 0.02, '9/1 12:00am'],
['American International Group, Inc.', 64.13, 0.31, 0.49, '9/1 12:00am'],
['AT&T Inc.', 31.61, -0.48, -1.54, '9/1 12:00am'],
['Boeing Co.', 75.43, 0.53, 0.71, '9/1 12:00am'],
['Caterpillar Inc.', 67.27, 0.92, 1.39, '9/1 12:00am'],
['Citigroup, Inc.', 49.37, 0.02, 0.04, '9/1 12:00am'],
['E.I. du Pont de Nemours and Company', 40.48, 0.51, 1.28, '9/1 12:00am'],
['Exxon Mobil Corp', 68.1, -0.43, -0.64, '9/1 12:00am'],
['General Electric Company', 34.14, -0.08, -0.23, '9/1 12:00am'],
['General Motors Corporation', 30.27, 1.09, 3.74, '9/1 12:00am'],
['Hewlett-Packard Co.', 36.53, -0.03, -0.08, '9/1 12:00am'],
['Honeywell Intl Inc', 38.77, 0.05, 0.13, '9/1 12:00am'],
['Intel Corporation', 19.88, 0.31, 1.58, '9/1 12:00am'],
['International Business Machines', 81.41, 0.44, 0.54, '9/1 12:00am'],
['Johnson & Johnson', 64.72, 0.06, 0.09, '9/1 12:00am'],
['JP Morgan & Chase & Co', 45.73, 0.07, 0.15, '9/1 12:00am'],
['McDonald\'s Corporation', 36.76, 0.86, 2.40, '9/1 12:00am'],
['Merck & Co., Inc.', 40.96, 0.41, 1.01, '9/1 12:00am'],
['Microsoft Corporation', 25.84, 0.14, 0.54, '9/1 12:00am'],
['Pfizer Inc', 27.96, 0.4, 1.45, '9/1 12:00am'],
['The Coca-Cola Company', 45.07, 0.26, 0.58, '9/1 12:00am'],
['The Home Depot, Inc.', 34.64, 0.35, 1.02, '9/1 12:00am'],
['The Procter & Gamble Company', 61.91, 0.01, 0.02, '9/1 12:00am'],
['United Technologies Corporation', 63.26, 0.55, 0.88, '9/1 12:00am'],
['Verizon Communications', 35.57, 0.39, 1.11, '9/1 12:00am'],
['Wal-Mart Stores, Inc.', 45.45, 0.73, 1.63, '9/1 12:00am']
]
});
[/code]

View - Grid

[code lang="js" firstline="1" toolbar="true" collapse="false" wraplines="false"]
Ext.define('Ext4Example.view.stock.StockGrid' ,{
extend: 'Ext.grid.Panel',
alias : 'widget.stockgrid',

title : 'Json Grid',

/**
* Custom function used for column renderer
* @param {Object} val
*/
change: function(val) {
if (val > 0) {
return '<span style="color:green;">' + val + '</span>';
} else if (val < 0) {
return '<span style="color:red;">' + val + '</span>';
}
return val;
},

/**
* Custom function used for column renderer
* @param {Object} val
*/
pctChange: function(val) {
if (val > 0) {
return '<span style="color:green;">' + val + '%</span>';
} else if (val < 0) {
return '<span style="color:red;">' + val + '%</span>';
}
return val;
},

viewConfig: {
stripeRows: true
},

initComponent: function() {

this.store = 'Stocks';

this.columns = [{
text : 'Company',
flex : 1,
sortable : false,
dataIndex: 'company'
},
{
text : 'Price',
width : 75,
sortable : true,
renderer : 'usMoney',
dataIndex: 'price'
},
{
text : 'Change',
width : 75,
sortable : true,
renderer : this.change,
dataIndex: 'change'
},
{
text : '% Change',
width : 75,
sortable : true,
renderer : this.pctChange,
dataIndex: 'pctChange'
},
{
text : 'Last Updated',
width : 85,
sortable : true,
renderer : Ext.util.Format.dateRenderer('m/d/Y'),
dataIndex: 'lastChange'
},
{
xtype: 'actioncolumn',
width: 50,
items: [{
iconCls: 'icon-delete',
tooltip: 'Sell stock',
}, {
getClass: function(v, meta, rec) {
if (rec.get('change') < 0) {
this.items[1].tooltip = 'Hold stock';
return 'icon-alert';
} else {
this.items[1].tooltip = 'Buy stock';
return 'icon-buy';
}
}
}]
}];

this.callParent(arguments);
}
});
[/code]

View- Viewport

[code lang="js" firstline="1" toolbar="true" collapse="false" wraplines="false"]
/**
* The main application viewport, which displays the whole application
* @extends Ext.Viewport
*/
Ext.define('Ext4Example.view.Viewport', {
extend: 'Ext.Viewport',
layout: 'fit',

requires: [
'Ext4Example.view.stock.StockGrid'
],

initComponent: function() {
var me = this;

Ext.apply(me, {
items: [
{
xtype: 'stockgrid'
}
]
});

me.callParent(arguments);
}
});
[/code]

Controller

[code lang="js" firstline="1" toolbar="true" collapse="false" wraplines="false"]
Ext.define('Ext4Example.controller.Stocks', {
extend: 'Ext.app.Controller',

stores: ['Stocks'],

models: ['Stock'],

views: ['stock.StockGrid'],

init: function() {
this.control({
'stockgrid actioncolumn': {
click: this.onAction
}
});
},

onAction: function(view,cell,row,col,e){

var m = e.getTarget().className.match(/\bicon-(\w+)\b/);

var rec = this.getStocksStore().getAt(row);

if(m){
switch(m[1]){
case 'buy':
alert("Buy " + rec.get('company'));
break;
case 'alert':
alert("Hold " + rec.get('company'));
break;
case 'delete':
alert("Sell " + rec.get('company'));
break;
}
}
}
});
[/code]

App.js

[code lang="js" firstline="1" toolbar="true" collapse="false" wraplines="false"]
Ext.application({
name: 'Ext4Example',

controllers: [
'Stocks'
],

autoCreateViewport: true
});
[/code]

Página HTML

[code lang="html" firstline="1" toolbar="true" collapse="false" wraplines="false"]
<html>
<head>
<title>Ext JS 4 Examples - loiane.com</title>

<!-- Ext JS Files -->
<link rel="stylesheet" type="text/css" href="extjs/resources/css/ext-all.css">
<script type="text/javascript" src="extjs/ext.js"></script>

<!-- App Files -->
<link rel="stylesheet" type="text/css" href="resources/css/array-grid.css" />
<script type="text/javascript" src="app.js"></script>

</head>
<body></body>
</html>
[/code]

CSS

[code lang="css" firstline="1" toolbar="true" collapse="false" wraplines="false"]
/* style rows on mouseover */
.x-grid-row-over .x-grid-cell-inner {
font-weight: bold;
}
/* shared styles for the ActionColumn icons */
.x-action-col-cell img {
height: 16px;
width: 16px;
cursor: pointer;
}
/* custom icon for the "buy" ActionColumn icon */
.x-action-col-cell img.icon-buy {
background-image: url(../icons/accept.gif);
}
/* custom icon for the "alert" ActionColumn icon */
.x-action-col-cell img.icon-alert {
background-image: url(../icons/error.gif);
}
/* custom icon for the "alert" ActionColumn icon */
.x-action-col-cell img.icon-delete {
background-image: url(../icons/delete.gif);
}
[/code]

Download do código fonte completo

Você pode fazer o download do código fonte completo através dos meu repositório do Github: https://github.com/loiane/extjs4-mvc-basic-array-grid

Demo

Para ver esse projeto rodando, acesse o link: http://loiane.com/extjs/extjs4-mvc-basic-array-grid/

Até o próximo exemplo! :)