paging.js
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/*
* Ext JS Library 1.1 Beta 1
* Copyright(c) 2006-2007, Ext JS, LLC.
* licensing@extjs.com
*
* http://www.extjs.com/license
*/
Ext.onReady(function(){
// create the Data Store
var ds = new Ext.data.Store({
// load using script tags for cross domain, if the data in on the same domain as
// this page, an HttpProxy would be better
proxy: new Ext.data.ScriptTagProxy({
url: 'http://extjs.com/forum/topics-remote.php'
}),
// create reader that reads the Topic records
reader: new Ext.data.JsonReader({
root: 'topics',
totalProperty: 'totalCount',
id: 'post_id'
}, [
{name: 'title', mapping: 'topic_title'},
{name: 'author', mapping: 'author'},
{name: 'totalPosts', mapping: 'topic_replies', type: 'int'},
{name: 'lastPost', mapping: 'post_time', type: 'date', dateFormat: 'timestamp'},
{name: 'excerpt', mapping: 'post_text'}
]),
// turn on remote sorting
remoteSort: true
});
// pluggable renders
function renderTopic(value, p, record){
return String.format('<b>{0}</b>{1}', value, record.data['excerpt']);
}
function renderTopicPlain(value){
return String.format('<b><i>{0}</i></b>', value);
}
function renderLast(value, p, r){
return String.format('{0}<br/>by {1}', value.dateFormat('M j, Y, g:i a'), r.data['author']);
}
function renderLastPlain(value){
return value.dateFormat('M j, Y, g:i a');
}
// the column model has information about grid columns
// dataIndex maps the column to the specific data field in
// the data store
var cm = new Ext.grid.ColumnModel([{
id: 'topic', // id assigned so we can apply custom css (e.g. .x-grid-col-topic b { color:#333 })
header: "Topic",
dataIndex: 'title',
width: 490,
renderer: renderTopic,
css: 'white-space:normal;'
},{
header: "Author",
dataIndex: 'author',
width: 100,
hidden: true
},{
id: 'last',
header: "Last Post",
dataIndex: 'lastPost',
width: 150,
renderer: renderLast
}]);
// create the editor grid
var grid = new Ext.grid.Grid('topic-grid', {
ds: ds,
cm: cm,
selModel: new Ext.grid.RowSelectionModel({singleSelect:true}),
enableColLock:false,
loadMask: true
});
// make the grid resizable, do before render for better performance
var rz = new Ext.Resizable('topic-grid', {
wrap:true,
minHeight:100,
pinned:true,
handles: 's'
});
rz.on('resize', grid.autoSize, grid);
// render it
grid.render();
var gridFoot = grid.getView().getFooterPanel(true);
// add a paging toolbar to the grid's footer
var paging = new Ext.PagingToolbar(gridFoot, ds, {
pageSize: 25,
displayInfo: true,
displayMsg: 'Displaying topics {0} - {1} of {2}',
emptyMsg: "No topics to display"
});
// add the detailed view button
paging.add('-', {
pressed: true,
enableToggle:true,
text: 'Detailed View',
cls: 'x-btn-text-icon details',
toggleHandler: toggleDetails
});
// trigger the data store load
ds.load({params:{start:0, limit:25}});
function toggleDetails(btn, pressed){
cm.getColumnById('topic').renderer = pressed ? renderTopic : renderTopicPlain;
cm.getColumnById('last').renderer = pressed ? renderLast : renderLastPlain;
grid.getView().refresh();
}
});