268 lines
No EOL
9 KiB
JavaScript
268 lines
No EOL
9 KiB
JavaScript
/*
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* Ext JS Library 1.0.1
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* Copyright(c) 2006-2007, Ext JS, LLC.
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* licensing@extjs.com
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*
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* http://www.extjs.com/license
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*/
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/**
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* @class Ext.PagingToolbar
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* @extends Ext.Toolbar
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* A specialized toolbar that is bound to a {@link Ext.data.Store} and provides automatic paging controls.
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* @constructor
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* Create a new PagingToolbar
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* @param {String/HTMLElement/Element} container The id or element that will contain the toolbar
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* @param {Ext.data.Store} store The underlying data store providing the paged data
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* @param {Object} config The config object
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*/
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Ext.PagingToolbar = function(el, ds, config){
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Ext.PagingToolbar.superclass.constructor.call(this, el, null, config);
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this.ds = ds;
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this.cursor = 0;
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this.renderButtons(this.el);
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this.bind(ds);
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};
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Ext.extend(Ext.PagingToolbar, Ext.Toolbar, {
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/**
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* @cfg {Number} pageSize
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* The number of records to display per page (defaults to 20)
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*/
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pageSize: 20,
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/**
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* @cfg {String} displayMsg
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* The paging status message to display (defaults to "Displaying {start} - {end} of {total}")
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*/
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displayMsg : 'Displaying {0} - {1} of {2}',
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/**
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* @cfg {String} emptyMsg
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* The message to display when no records are found (defaults to "No data to display")
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*/
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emptyMsg : 'No data to display',
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/**
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* Customizable piece of the default paging text (defaults to "Page")
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* @type String
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*/
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beforePageText : "Page",
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/**
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* Customizable piece of the default paging text (defaults to "of %0")
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* @type String
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*/
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afterPageText : "of {0}",
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/**
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* Customizable piece of the default paging text (defaults to "First Page")
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* @type String
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*/
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firstText : "First Page",
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/**
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* Customizable piece of the default paging text (defaults to "Previous Page")
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* @type String
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*/
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prevText : "Previous Page",
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/**
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* Customizable piece of the default paging text (defaults to "Next Page")
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* @type String
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*/
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nextText : "Next Page",
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/**
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* Customizable piece of the default paging text (defaults to "Last Page")
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* @type String
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*/
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lastText : "Last Page",
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/**
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* Customizable piece of the default paging text (defaults to "Refresh")
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* @type String
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*/
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refreshText : "Refresh",
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// private
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renderButtons : function(el){
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this.first = this.addButton({
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tooltip: this.firstText,
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cls: "x-btn-icon x-grid-page-first",
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disabled: true,
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handler: this.onClick.createDelegate(this, ["first"])
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});
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this.prev = this.addButton({
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tooltip: this.prevText,
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cls: "x-btn-icon x-grid-page-prev",
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disabled: true,
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handler: this.onClick.createDelegate(this, ["prev"])
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});
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this.addSeparator();
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this.add(this.beforePageText);
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this.field = Ext.get(this.addDom({
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tag: "input",
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type: "text",
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size: "3",
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value: "1",
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cls: "x-grid-page-number"
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}).el);
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this.field.on("keydown", this.onPagingKeydown, this);
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this.field.on("focus", function(){this.dom.select();});
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this.afterTextEl = this.addText(String.format(this.afterPageText, 1));
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this.field.setHeight(18);
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this.addSeparator();
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this.next = this.addButton({
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tooltip: this.nextText,
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cls: "x-btn-icon x-grid-page-next",
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disabled: true,
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handler: this.onClick.createDelegate(this, ["next"])
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});
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this.last = this.addButton({
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tooltip: this.lastText,
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cls: "x-btn-icon x-grid-page-last",
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disabled: true,
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handler: this.onClick.createDelegate(this, ["last"])
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});
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this.addSeparator();
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this.loading = this.addButton({
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tooltip: this.refreshText,
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cls: "x-btn-icon x-grid-loading",
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disabled: true,
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handler: this.onClick.createDelegate(this, ["refresh"])
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});
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if(this.displayInfo){
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this.displayEl = this.el.createChild({cls:'x-paging-info'});
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}
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},
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// private
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updateInfo : function(){
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if(this.displayEl){
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var count = this.ds.getCount();
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var msg = count == 0 ?
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this.emptyMsg :
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String.format(
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this.displayMsg,
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this.cursor+1, this.cursor+count, this.ds.getTotalCount()
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);
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this.displayEl.update(msg);
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}
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},
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// private
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onLoad : function(ds, r, o){
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this.cursor = o.params ? o.params.start : 0;
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var d = this.getPageData(), ap = d.activePage, ps = d.pages;
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this.afterTextEl.el.innerHTML = String.format(this.afterPageText, d.pages);
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this.field.dom.value = ap;
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this.first.setDisabled(ap == 1);
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this.prev.setDisabled(ap == 1);
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this.next.setDisabled(ap == ps);
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this.last.setDisabled(ap == ps);
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this.loading.enable();
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this.updateInfo();
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},
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// private
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getPageData : function(){
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var total = this.ds.getTotalCount();
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return {
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total : total,
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activePage : Math.ceil((this.cursor+this.pageSize)/this.pageSize),
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pages : total < this.pageSize ? 1 : Math.ceil(total/this.pageSize)
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};
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},
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// private
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onLoadError : function(){
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this.loading.enable();
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},
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// private
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onPagingKeydown : function(e){
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var k = e.getKey();
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var d = this.getPageData();
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if(k == e.RETURN){
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var v = this.field.dom.value, pageNum;
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if(!v || isNaN(pageNum = parseInt(v, 10))){
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this.field.dom.value = d.activePage;
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return;
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}
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pageNum = Math.min(Math.max(1, pageNum), d.pages) - 1;
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this.ds.load({params:{start: pageNum * this.pageSize, limit: this.pageSize}});
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e.stopEvent();
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}
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else if(k == e.HOME || (k == e.UP && e.ctrlKey) || (k == e.PAGEUP && e.ctrlKey) || (k == e.RIGHT && e.ctrlKey) || k == e.END || (k == e.DOWN && e.ctrlKey) || (k == e.LEFT && e.ctrlKey) || (k == e.PAGEDOWN && e.ctrlKey))
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{
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var pageNum = (k == e.HOME || (k == e.DOWN && e.ctrlKey) || (k == e.LEFT && e.ctrlKey) || (k == e.PAGEDOWN && e.ctrlKey)) ? 1 : d.pages;
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this.field.dom.value = pageNum;
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this.ds.load({params:{start: (pageNum - 1) * this.pageSize, limit: this.pageSize}});
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e.stopEvent();
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}
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else if(k == e.UP || k == e.RIGHT || k == e.PAGEUP || k == e.DOWN || k == e.LEFT || k == e.PAGEDOWN)
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{
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var v = this.field.dom.value, pageNum;
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var increment = (e.shiftKey) ? 10 : 1;
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if(k == e.DOWN || k == e.LEFT || k == e.PAGEDOWN)
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increment *= -1;
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if(!v || isNaN(pageNum = parseInt(v, 10))) {
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this.field.dom.value = d.activePage;
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return;
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}
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else if(parseInt(v, 10) + increment >= 1 & parseInt(v, 10) + increment <= d.pages)
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{
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this.field.dom.value = parseInt(v, 10) + increment;
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pageNum = Math.min(Math.max(1, pageNum + increment), d.pages) - 1;
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this.ds.load({params:{start: pageNum * this.pageSize, limit: this.pageSize}});
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}
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e.stopEvent();
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}
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},
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// private
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beforeLoad : function(){
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if(this.loading){
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this.loading.disable();
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}
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},
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// private
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onClick : function(which){
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var ds = this.ds;
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switch(which){
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case "first":
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ds.load({params:{start: 0, limit: this.pageSize}});
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break;
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case "prev":
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ds.load({params:{start: Math.max(0, this.cursor-this.pageSize), limit: this.pageSize}});
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break;
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case "next":
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ds.load({params:{start: this.cursor+this.pageSize, limit: this.pageSize}});
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break;
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case "last":
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var total = ds.getTotalCount();
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var extra = total % this.pageSize;
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var lastStart = extra ? (total - extra) : total-this.pageSize;
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ds.load({params:{start: lastStart, limit: this.pageSize}});
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break;
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case "refresh":
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ds.load({params:{start: this.cursor, limit: this.pageSize}});
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break;
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}
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},
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/**
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* Unbinds the paging toolbar from the specified {@link Ext.data.Store}
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* @param {Ext.data.Store} store The data store to unbind
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*/
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unbind : function(ds){
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ds.un("beforeload", this.beforeLoad, this);
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ds.un("load", this.onLoad, this);
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ds.un("loadexception", this.onLoadError, this);
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},
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/**
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* Binds the paging toolbar to the specified {@link Ext.data.Store}
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* @param {Ext.data.Store} store The data store to bind
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*/
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bind : function(ds){
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ds.on("beforeload", this.beforeLoad, this);
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ds.on("load", this.onLoad, this);
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ds.on("loadexception", this.onLoadError, this);
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}
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}); |