FeedGrid.js
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Ext.define('FeedViewer.FeedGrid', {
extend: 'Ext.grid.Panel',
alias: 'widget.feedgrid',
initComponent: function(){
this.addEvents(
/**
* @event rowdblclick
* Fires when a row is double clicked
* @param {FeedViewer.FeedGrid} this
* @param {Ext.data.Model} model
*/
'rowdblclick',
/**
* @event select
* Fires when a grid row is selected
* @param {FeedViewer.FeedGrid} this
* @param {Ext.data.Model} model
*/
'select'
);
Ext.apply(this, {
cls: 'feed-grid',
store: Ext.create('Ext.data.Store', {
model: 'FeedItem',
sortInfo: {
property: 'pubDate',
direction: 'DESC'
},
proxy: {
type: 'ajax',
url: 'feed-proxy.php',
reader: {
type: 'xml',
record: 'item'
},
listeners: {
exception: this.onProxyException,
scope: this
}
},
listeners: {
load: this.onLoad,
scope: this
}
}),
viewConfig: {
itemId: 'view',
plugins: [{
pluginId: 'preview',
ptype: 'preview',
bodyField: 'description',
expanded: true
}],
listeners: {
scope: this,
itemdblclick: this.onRowDblClick
}
},
columns: [{
text: 'Title',
dataIndex: 'title',
flex: 1,
renderer: this.formatTitle
}, {
text: 'Author',
dataIndex: 'author',
hidden: true,
width: 200
}, {
text: 'Date',
dataIndex: 'pubDate',
renderer: this.formatDate,
width: 200
}]
});
this.callParent(arguments);
this.on('selectionchange', this.onSelect, this);
},
/**
* Reacts to a double click
* @private
* @param {Object} view The view
* @param {Object} index The row index
*/
onRowDblClick: function(view, record, item, index, e) {
this.fireEvent('rowdblclick', this, this.store.getAt(index));
},
/**
* React to a grid item being selected
* @private
* @param {Ext.model.Selection} model The selection model
* @param {Array} selections An array of selections
*/
onSelect: function(model, selections){
var selected = selections[0];
if (selected) {
this.fireEvent('select', this, selected);
}
},
/**
* Listens for the store loading
* @private
*/
onLoad: function(store, records, success) {
if (this.getStore().getCount()) {
this.getSelectionModel().select(0);
}
},
/**
* Listen for proxy eerrors.
*/
onProxyException: function(proxy, response, operation) {
Ext.Msg.alert("Error with data from server", operation.error);
this.view.el.update('');
// Update the detail view with a dummy empty record
this.fireEvent('select', this, {data:{}});
},
/**
* Instructs the grid to load a new feed
* @param {String} url The url to load
*/
loadFeed: function(url){
var store = this.store;
store.getProxy().extraParams.feed = url;
store.load();
},
/**
* Title renderer
* @private
*/
formatTitle: function(value, p, record){
return Ext.String.format('<div class="topic"><b>{0}</b><span class="author">{1}</span></div>', value, record.get('author') || "Unknown");
},
/**
* Date renderer
* @private
*/
formatDate: function(date){
if (!date) {
return '';
}
var now = new Date(), d = Ext.Date.clearTime(now, true), notime = Ext.Date.clearTime(date, true).getTime();
if (notime === d.getTime()) {
return 'Today ' + Ext.Date.format(date, 'g:i a');
}
d = Ext.Date.add(d, 'd', -6);
if (d.getTime() <= notime) {
return Ext.Date.format(date, 'D g:i a');
}
return Ext.Date.format(date, 'Y/m/d g:i a');
}
});