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- <pre class="prettyprint lang-js">/*!
- * Ext JS Library 3.3.1
- * Copyright(c) 2006-2010 Sencha Inc.
- * licensing@sencha.com
- * http://www.sencha.com/license
- */
-<div id="cls-Ext.PagingToolbar"></div>/**
- * @class Ext.PagingToolbar
- * @extends Ext.Toolbar
- * <p>As the amount of records increases, the time required for the browser to render
- * them increases. Paging is used to reduce the amount of data exchanged with the client.
- * Note: if there are more records/rows than can be viewed in the available screen area, vertical
- * scrollbars will be added.</p>
- * <p>Paging is typically handled on the server side (see exception below). The client sends
- * parameters to the server side, which the server needs to interpret and then respond with the
- * approprate data.</p>
- * <p><b>Ext.PagingToolbar</b> is a specialized toolbar that is bound to a {@link Ext.data.Store}
- * and provides automatic paging control. This Component {@link Ext.data.Store#load load}s blocks
- * of data into the <tt>{@link #store}</tt> by passing {@link Ext.data.Store#paramNames paramNames} used for
- * paging criteria.</p>
- * <p>PagingToolbar is typically used as one of the Grid's toolbars:</p>
- * <pre><code>
-Ext.QuickTips.init(); // to display button quicktips
-
-var myStore = new Ext.data.Store({
- reader: new Ext.data.JsonReader({
- {@link Ext.data.JsonReader#totalProperty totalProperty}: 'results',
- ...
- }),
- ...
-});
-
-var myPageSize = 25; // server script should only send back 25 items at a time
-
-var grid = new Ext.grid.GridPanel({
- ...
- store: myStore,
- bbar: new Ext.PagingToolbar({
- {@link #store}: myStore, // grid and PagingToolbar using same store
- {@link #displayInfo}: true,
- {@link #pageSize}: myPageSize,
- {@link #prependButtons}: true,
- items: [
- 'text 1'
- ]
- })
-});
- * </code></pre>
- *
- * <p>To use paging, pass the paging requirements to the server when the store is first loaded.</p>
- * <pre><code>
-store.load({
- params: {
- // specify params for the first page load if using paging
- start: 0,
- limit: myPageSize,
- // other params
- foo: 'bar'
- }
-});
- * </code></pre>
- *
- * <p>If using {@link Ext.data.Store#autoLoad store's autoLoad} configuration:</p>
- * <pre><code>
-var myStore = new Ext.data.Store({
- {@link Ext.data.Store#autoLoad autoLoad}: {params:{start: 0, limit: 25}},
- ...
-});
- * </code></pre>
- *
- * <p>The packet sent back from the server would have this form:</p>
- * <pre><code>
-{
- "success": true,
- "results": 2000,
- "rows": [ // <b>*Note:</b> this must be an Array
- { "id": 1, "name": "Bill", "occupation": "Gardener" },
- { "id": 2, "name": "Ben", "occupation": "Horticulturalist" },
- ...
- { "id": 25, "name": "Sue", "occupation": "Botanist" }
- ]
-}
- * </code></pre>
- * <p><u>Paging with Local Data</u></p>
- * <p>Paging can also be accomplished with local data using extensions:</p>
- * <div class="mdetail-params"><ul>
- * <li><a href="http://extjs.com/forum/showthread.php?t=71532">Ext.ux.data.PagingStore</a></li>
- * <li>Paging Memory Proxy (examples/ux/PagingMemoryProxy.js)</li>
- * </ul></div>
- * @constructor Create a new PagingToolbar
- * @param {Object} config The config object
- * @xtype paging
- */
-(function() {
-
-var T = Ext.Toolbar;
-
-Ext.PagingToolbar = Ext.extend(Ext.Toolbar, {
- <div id="cfg-Ext.PagingToolbar-store"></div>/**
- * @cfg {Ext.data.Store} store
- * The {@link Ext.data.Store} the paging toolbar should use as its data source (required).
- */
- <div id="cfg-Ext.PagingToolbar-displayInfo"></div>/**
- * @cfg {Boolean} displayInfo
- * <tt>true</tt> to display the displayMsg (defaults to <tt>false</tt>)
- */
- <div id="cfg-Ext.PagingToolbar-pageSize"></div>/**
- * @cfg {Number} pageSize
- * The number of records to display per page (defaults to <tt>20</tt>)
- */
- pageSize : 20,
- <div id="cfg-Ext.PagingToolbar-prependButtons"></div>/**
- * @cfg {Boolean} prependButtons
- * <tt>true</tt> to insert any configured <tt>items</tt> <i>before</i> the paging buttons.
- * Defaults to <tt>false</tt>.
- */
- <div id="cfg-Ext.PagingToolbar-displayMsg"></div>/**
- * @cfg {String} displayMsg
- * The paging status message to display (defaults to <tt>'Displaying {0} - {1} of {2}'</tt>).
- * Note that this string is formatted using the braced numbers <tt>{0}-{2}</tt> as tokens
- * that are replaced by the values for start, end and total respectively. These tokens should
- * be preserved when overriding this string if showing those values is desired.
- */
- displayMsg : 'Displaying {0} - {1} of {2}',
- <div id="cfg-Ext.PagingToolbar-emptyMsg"></div>/**
- * @cfg {String} emptyMsg
- * The message to display when no records are found (defaults to 'No data to display')
- */
- emptyMsg : 'No data to display',
- <div id="cfg-Ext.PagingToolbar-beforePageText"></div>/**
- * @cfg {String} beforePageText
- * The text displayed before the input item (defaults to <tt>'Page'</tt>).
- */
- beforePageText : 'Page',
- <div id="cfg-Ext.PagingToolbar-afterPageText"></div>/**
- * @cfg {String} afterPageText
- * Customizable piece of the default paging text (defaults to <tt>'of {0}'</tt>). Note that
- * this string is formatted using <tt>{0}</tt> as a token that is replaced by the number of
- * total pages. This token should be preserved when overriding this string if showing the
- * total page count is desired.
- */
- afterPageText : 'of {0}',
- <div id="cfg-Ext.PagingToolbar-firstText"></div>/**
- * @cfg {String} firstText
- * The quicktip text displayed for the first page button (defaults to <tt>'First Page'</tt>).
- * <b>Note</b>: quick tips must be initialized for the quicktip to show.
- */
- firstText : 'First Page',
- <div id="cfg-Ext.PagingToolbar-prevText"></div>/**
- * @cfg {String} prevText
- * The quicktip text displayed for the previous page button (defaults to <tt>'Previous Page'</tt>).
- * <b>Note</b>: quick tips must be initialized for the quicktip to show.
- */
- prevText : 'Previous Page',
- <div id="cfg-Ext.PagingToolbar-nextText"></div>/**
- * @cfg {String} nextText
- * The quicktip text displayed for the next page button (defaults to <tt>'Next Page'</tt>).
- * <b>Note</b>: quick tips must be initialized for the quicktip to show.
- */
- nextText : 'Next Page',
- <div id="cfg-Ext.PagingToolbar-lastText"></div>/**
- * @cfg {String} lastText
- * The quicktip text displayed for the last page button (defaults to <tt>'Last Page'</tt>).
- * <b>Note</b>: quick tips must be initialized for the quicktip to show.
- */
- lastText : 'Last Page',
- <div id="cfg-Ext.PagingToolbar-refreshText"></div>/**
- * @cfg {String} refreshText
- * The quicktip text displayed for the Refresh button (defaults to <tt>'Refresh'</tt>).
- * <b>Note</b>: quick tips must be initialized for the quicktip to show.
- */
- refreshText : 'Refresh',
-
- <div id="prop-Ext.PagingToolbar-paramNames"></div>/**
- * <p><b>Deprecated</b>. <code>paramNames</code> should be set in the <b>data store</b>
- * (see {@link Ext.data.Store#paramNames}).</p>
- * <br><p>Object mapping of parameter names used for load calls, initially set to:</p>
- * <pre>{start: 'start', limit: 'limit'}</pre>
- * @type Object
- * @property paramNames
- * @deprecated
- */
-
- <div id="prop-Ext.PagingToolbar-pageSize"></div>/**
- * The number of records to display per page. See also <tt>{@link #cursor}</tt>.
- * @type Number
- * @property pageSize
- */
-
- <div id="prop-Ext.PagingToolbar-cursor"></div>/**
- * Indicator for the record position. This property might be used to get the active page
- * number for example:<pre><code>
- * // t is reference to the paging toolbar instance
- * var activePage = Math.ceil((t.cursor + t.pageSize) / t.pageSize);
- * </code></pre>
- * @type Number
- * @property cursor
- */
-
- initComponent : function(){
- var pagingItems = [this.first = new T.Button({
- tooltip: this.firstText,
- overflowText: this.firstText,
- iconCls: 'x-tbar-page-first',
- disabled: true,
- handler: this.moveFirst,
- scope: this
- }), this.prev = new T.Button({
- tooltip: this.prevText,
- overflowText: this.prevText,
- iconCls: 'x-tbar-page-prev',
- disabled: true,
- handler: this.movePrevious,
- scope: this
- }), '-', this.beforePageText,
- this.inputItem = new Ext.form.NumberField({
- cls: 'x-tbar-page-number',
- allowDecimals: false,
- allowNegative: false,
- enableKeyEvents: true,
- selectOnFocus: true,
- submitValue: false,
- listeners: {
- scope: this,
- keydown: this.onPagingKeyDown,
- blur: this.onPagingBlur
- }
- }), this.afterTextItem = new T.TextItem({
- text: String.format(this.afterPageText, 1)
- }), '-', this.next = new T.Button({
- tooltip: this.nextText,
- overflowText: this.nextText,
- iconCls: 'x-tbar-page-next',
- disabled: true,
- handler: this.moveNext,
- scope: this
- }), this.last = new T.Button({
- tooltip: this.lastText,
- overflowText: this.lastText,
- iconCls: 'x-tbar-page-last',
- disabled: true,
- handler: this.moveLast,
- scope: this
- }), '-', this.refresh = new T.Button({
- tooltip: this.refreshText,
- overflowText: this.refreshText,
- iconCls: 'x-tbar-loading',
- handler: this.doRefresh,
- scope: this
- })];
-
-
- var userItems = this.items || this.buttons || [];
- if (this.prependButtons) {
- this.items = userItems.concat(pagingItems);
- }else{
- this.items = pagingItems.concat(userItems);
- }
- delete this.buttons;
- if(this.displayInfo){
- this.items.push('->');
- this.items.push(this.displayItem = new T.TextItem({}));
- }
- Ext.PagingToolbar.superclass.initComponent.call(this);
- this.addEvents(
- <div id="event-Ext.PagingToolbar-change"></div>/**
- * @event change
- * Fires after the active page has been changed.
- * @param {Ext.PagingToolbar} this
- * @param {Object} pageData An object that has these properties:<ul>
- * <li><code>total</code> : Number <div class="sub-desc">The total number of records in the dataset as
- * returned by the server</div></li>
- * <li><code>activePage</code> : Number <div class="sub-desc">The current page number</div></li>
- * <li><code>pages</code> : Number <div class="sub-desc">The total number of pages (calculated from
- * the total number of records in the dataset as returned by the server and the current {@link #pageSize})</div></li>
- * </ul>
- */
- 'change',
- <div id="event-Ext.PagingToolbar-beforechange"></div>/**
- * @event beforechange
- * Fires just before the active page is changed.
- * Return false to prevent the active page from being changed.
- * @param {Ext.PagingToolbar} this
- * @param {Object} params An object hash of the parameters which the PagingToolbar will send when
- * loading the required page. This will contain:<ul>
- * <li><code>start</code> : Number <div class="sub-desc">The starting row number for the next page of records to
- * be retrieved from the server</div></li>
- * <li><code>limit</code> : Number <div class="sub-desc">The number of records to be retrieved from the server</div></li>
- * </ul>
- * <p>(note: the names of the <b>start</b> and <b>limit</b> properties are determined
- * by the store's {@link Ext.data.Store#paramNames paramNames} property.)</p>
- * <p>Parameters may be added as required in the event handler.</p>
- */
- 'beforechange'
- );
- this.on('afterlayout', this.onFirstLayout, this, {single: true});
- this.cursor = 0;
- this.bindStore(this.store, true);
- },
-
- // private
- onFirstLayout : function(){
- if(this.dsLoaded){
- this.onLoad.apply(this, this.dsLoaded);
- }
- },
-
- // private
- updateInfo : function(){
- if(this.displayItem){
- var count = this.store.getCount();
- var msg = count == 0 ?
- this.emptyMsg :
- String.format(
- this.displayMsg,
- this.cursor+1, this.cursor+count, this.store.getTotalCount()
- );
- this.displayItem.setText(msg);
- }
- },
-
- // private
- onLoad : function(store, r, o){
- if(!this.rendered){
- this.dsLoaded = [store, r, o];
- return;
- }
- var p = this.getParams();
- this.cursor = (o.params && o.params[p.start]) ? o.params[p.start] : 0;
- var d = this.getPageData(), ap = d.activePage, ps = d.pages;
-
- this.afterTextItem.setText(String.format(this.afterPageText, d.pages));
- this.inputItem.setValue(ap);
- this.first.setDisabled(ap == 1);
- this.prev.setDisabled(ap == 1);
- this.next.setDisabled(ap == ps);
- this.last.setDisabled(ap == ps);
- this.refresh.enable();
- this.updateInfo();
- this.fireEvent('change', this, d);
- },
-
- // private
- getPageData : function(){
- var total = this.store.getTotalCount();
- return {
- total : total,
- activePage : Math.ceil((this.cursor+this.pageSize)/this.pageSize),
- pages : total < this.pageSize ? 1 : Math.ceil(total/this.pageSize)
- };
- },
-
- <div id="method-Ext.PagingToolbar-changePage"></div>/**
- * Change the active page
- * @param {Integer} page The page to display
- */
- changePage : function(page){
- this.doLoad(((page-1) * this.pageSize).constrain(0, this.store.getTotalCount()));
- },
-
- // private
- onLoadError : function(){
- if(!this.rendered){
- return;
- }
- this.refresh.enable();
- },
-
- // private
- readPage : function(d){
- var v = this.inputItem.getValue(), pageNum;
- if (!v || isNaN(pageNum = parseInt(v, 10))) {
- this.inputItem.setValue(d.activePage);
- return false;
- }
- return pageNum;
- },
-
- onPagingFocus : function(){
- this.inputItem.select();
- },
-
- //private
- onPagingBlur : function(e){
- this.inputItem.setValue(this.getPageData().activePage);
- },
-
- // private
- onPagingKeyDown : function(field, e){
- var k = e.getKey(), d = this.getPageData(), pageNum;
- if (k == e.RETURN) {
- e.stopEvent();
- pageNum = this.readPage(d);
- if(pageNum !== false){
- pageNum = Math.min(Math.max(1, pageNum), d.pages) - 1;
- this.doLoad(pageNum * this.pageSize);
- }
- }else if (k == e.HOME || k == e.END){
- e.stopEvent();
- pageNum = k == e.HOME ? 1 : d.pages;
- field.setValue(pageNum);
- }else if (k == e.UP || k == e.PAGEUP || k == e.DOWN || k == e.PAGEDOWN){
- e.stopEvent();
- if((pageNum = this.readPage(d))){
- var increment = e.shiftKey ? 10 : 1;
- if(k == e.DOWN || k == e.PAGEDOWN){
- increment *= -1;
- }
- pageNum += increment;
- if(pageNum >= 1 & pageNum <= d.pages){
- field.setValue(pageNum);
- }
- }
- }
- },
-
- // private
- getParams : function(){
- //retain backwards compat, allow params on the toolbar itself, if they exist.
- return this.paramNames || this.store.paramNames;
- },
-
- // private
- beforeLoad : function(){
- if(this.rendered && this.refresh){
- this.refresh.disable();
- }
- },
-
- // private
- doLoad : function(start){
- var o = {}, pn = this.getParams();
- o[pn.start] = start;
- o[pn.limit] = this.pageSize;
- if(this.fireEvent('beforechange', this, o) !== false){
- this.store.load({params:o});
- }
- },
-
- <div id="method-Ext.PagingToolbar-moveFirst"></div>/**
- * Move to the first page, has the same effect as clicking the 'first' button.
- */
- moveFirst : function(){
- this.doLoad(0);
- },
-
- <div id="method-Ext.PagingToolbar-movePrevious"></div>/**
- * Move to the previous page, has the same effect as clicking the 'previous' button.
- */
- movePrevious : function(){
- this.doLoad(Math.max(0, this.cursor-this.pageSize));
- },
-
- <div id="method-Ext.PagingToolbar-moveNext"></div>/**
- * Move to the next page, has the same effect as clicking the 'next' button.
- */
- moveNext : function(){
- this.doLoad(this.cursor+this.pageSize);
- },
-
- <div id="method-Ext.PagingToolbar-moveLast"></div>/**
- * Move to the last page, has the same effect as clicking the 'last' button.
- */
- moveLast : function(){
- var total = this.store.getTotalCount(),
- extra = total % this.pageSize;
-
- this.doLoad(extra ? (total - extra) : total - this.pageSize);
- },
-
- <div id="method-Ext.PagingToolbar-doRefresh"></div>/**
- * Refresh the current page, has the same effect as clicking the 'refresh' button.
- */
- doRefresh : function(){
- this.doLoad(this.cursor);
- },
-
- <div id="method-Ext.PagingToolbar-bindStore"></div>/**
- * Binds the paging toolbar to the specified {@link Ext.data.Store}
- * @param {Store} store The store to bind to this toolbar
- * @param {Boolean} initial (Optional) true to not remove listeners
- */
- bindStore : function(store, initial){
- var doLoad;
- if(!initial && this.store){
- if(store !== this.store && this.store.autoDestroy){
- this.store.destroy();
- }else{
- this.store.un('beforeload', this.beforeLoad, this);
- this.store.un('load', this.onLoad, this);
- this.store.un('exception', this.onLoadError, this);
- }
- if(!store){
- this.store = null;
- }
- }
- if(store){
- store = Ext.StoreMgr.lookup(store);
- store.on({
- scope: this,
- beforeload: this.beforeLoad,
- load: this.onLoad,
- exception: this.onLoadError
- });
- doLoad = true;
- }
- this.store = store;
- if(doLoad){
- this.onLoad(store, null, {});
- }
- },
-
- <div id="method-Ext.PagingToolbar-unbind"></div>/**
- * Unbinds the paging toolbar from the specified {@link Ext.data.Store} <b>(deprecated)</b>
- * @param {Ext.data.Store} store The data store to unbind
- */
- unbind : function(store){
- this.bindStore(null);
- },
-
- <div id="method-Ext.PagingToolbar-bind"></div>/**
- * Binds the paging toolbar to the specified {@link Ext.data.Store} <b>(deprecated)</b>
- * @param {Ext.data.Store} store The data store to bind
- */
- bind : function(store){
- this.bindStore(store);
- },
-
- // private
- onDestroy : function(){
- this.bindStore(null);
- Ext.PagingToolbar.superclass.onDestroy.call(this);
- }
-});
-
-})();
-Ext.reg('paging', Ext.PagingToolbar);</pre>
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