PagingToolbar.js
Ext.PagingToolbar = function(el, ds, config){
Ext.PagingToolbar.superclass.constructor.call(this, el, null, config);
this.ds = ds;
this.cursor = 0;
this.render(this.el);
this.bind(ds);
};
Ext.extend(Ext.PagingToolbar, Ext.Toolbar, {
pageSize: 20,
render : function(el){
this.first = this.addButton({
tooltip: this.firstText,
cls: 'x-btn-icon x-grid-page-first',
disabled: true,
handler: this.onClick.createDelegate(this, ['first'])
});
this.prev = this.addButton({
tooltip: this.prevText,
cls: 'x-btn-icon x-grid-page-prev',
disabled: true,
handler: this.onClick.createDelegate(this, ['prev'])
});
this.addSeparator();
this.add(this.beforePageText);
this.field = Ext.get(this.addDom({
tag: 'input',
type: 'text',
size: '3',
value: '1',
cls: 'x-grid-page-number'
}).el);
this.field.on('keydown', this.onEnter, this);
this.field.on('focus', function(){this.dom.select();});
this.afterTextEl = this.addText(String.format(this.afterPageText, 1));
this.field.setHeight(18);
this.addSeparator();
this.next = this.addButton({
tooltip: this.nextText,
cls: 'x-btn-icon x-grid-page-next',
disabled: true,
handler: this.onClick.createDelegate(this, ['next'])
});
this.last = this.addButton({
tooltip: this.lastText,
cls: 'x-btn-icon x-grid-page-last',
disabled: true,
handler: this.onClick.createDelegate(this, ['last'])
});
this.addSeparator();
this.loading = this.addButton({
tooltip: this.refreshText,
cls: 'x-btn-icon x-grid-loading',
disabled: true,
handler: this.onClick.createDelegate(this, ['refresh'])
});
//this.onPageLoaded(1, this.grid.dataSource.getTotalPages());
},
onLoad : function(ds, r, o){
this.cursor = o.params ? o.params.start : 0;
var d = this.getPageData(), ap = d.activePage, ps = d.pages;
this.afterTextEl.el.innerHTML = String.format(this.afterPageText, d.pages);
this.field.dom.value = ap;
this.first.setDisabled(ap == 1);
this.prev.setDisabled(ap == 1);
this.next.setDisabled(ap == ps);
this.last.setDisabled(ap == ps);
this.loading.enable();
},
getPageData : function(){
var total = this.ds.getTotalCount();
return {
total : total,
activePage : (this.cursor+this.pageSize)/this.pageSize,
pages : total < this.pageSize ? 1 : Math.ceil(total/this.pageSize)
};
},
onLoadError : function(){
this.loading.enable();
},
onEnter : function(e){
if(e.getKey() == e.RETURN){
var d = this.getPageData();
var v = this.field.dom.value, pageNum;
if(!v || isNaN(pageNum = parseInt(v, 10))){
this.field.dom.value = d.activePage;
return;
}
pageNum = Math.min(Math.max(1, pageNum), d.pages)-1;
this.ds.load({params:{start: pageNum*this.pageSize, limit: this.pageSize}});
e.stopEvent();
}
},
beforeLoad : function(){
if(this.loading){
this.loading.disable();
}
},
onClick : function(which){
var ds = this.ds;
switch(which){
case 'first':
ds.load({params:{start: 0, limit: this.pageSize}});
break;
case 'prev':
ds.load({params:{start: Math.max(0, this.cursor-this.pageSize), limit: this.pageSize}});
break;
case 'next':
ds.load({params:{start: this.cursor+this.pageSize, limit: this.pageSize}});
break;
case 'last':
var total = ds.getTotalCount();
var extra = total % this.pageSize;
var lastStart = total - (extra || total-this.pageSize);
ds.load({params:{start: lastStart, limit: this.pageSize}});
break;
case 'refresh':
ds.load({params:{start: this.cursor, limit: this.pageSize}});
break;
}
},
unbind : function(ds){
ds.un('beforeload', this.beforeLoad, this);
ds.un('load', this.onLoad, this);
ds.un('loadexception', this.onLoadError, this);
},
bind : function(ds){
ds.on('beforeload', this.beforeLoad, this);
ds.on('load', this.onLoad, this);
ds.on('loadexception', this.onLoadError, this);
},
/**
* Customizable piece of the default paging text (defaults to "Page")
* @type String
*/
beforePageText : "Page",
/**
* Customizable piece of the default paging text (defaults to "of %0")
* @type String
*/
afterPageText : "of {0}",
/**
* Customizable piece of the default paging text (defaults to "First Page")
* @type String
*/
firstText : "First Page",
/**
* Customizable piece of the default paging text (defaults to "Previous Page")
* @type String
*/
prevText : "Previous Page",
/**
* Customizable piece of the default paging text (defaults to "Next Page")
* @type String
*/
nextText : "Next Page",
/**
* Customizable piece of the default paging text (defaults to "Last Page")
* @type String
*/
lastText : "Last Page",
/**
* Customizable piece of the default paging text (defaults to "Refresh")
* @type String
*/
refreshText : "Refresh"
});
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