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91 lines
2.5 KiB
JavaScript
91 lines
2.5 KiB
JavaScript
/*! Page length control via links for DataTables
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* 2014 SpryMedia Ltd - datatables.net/license
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*/
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/**
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* @summary LengthLinks
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* @description Page length control via links for DataTables
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* @version 1.1.0
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* @file dataTables.searchHighlight.js
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* @author SpryMedia Ltd (www.sprymedia.co.uk)
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* @contact www.sprymedia.co.uk/contact
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* @copyright Copyright 2014 SpryMedia Ltd.
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*
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* License MIT - http://datatables.net/license/mit
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*
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* This feature plug-in for DataTables adds page length control links to the
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* DataTable. The `dom` option can be used to insert the control using the `L`
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* character option and it uses the `lengthMenu` options of DataTables to
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* determine what to display.
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*
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* @example
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* $('#myTable').DataTable( {
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* dom: 'Lfrtip'
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* } );
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*
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* @example
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* $('#myTable').DataTable( {
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* lengthMenu: [ [10, 25, 50, -1], [10, 25, 50, "All"] ]
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* dom: 'Lfrtip'
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* } );
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*/
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(function(window, document, $, undefined) {
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$.fn.dataTable.LengthLinks = function ( inst ) {
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var api = new $.fn.dataTable.Api( inst );
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var settings = api.settings()[0];
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var container = $('<div></div>').addClass( settings.oClasses.sLength );
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var lastLength = null;
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// API so the feature wrapper can return the node to insert
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this.container = function () {
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return container[0];
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};
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// Listen for events to change the page length
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container.on( 'click.dtll', 'a', function (e) {
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e.preventDefault();
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api.page.len( $(this).data('length')*1 ).draw( false );
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} );
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// Update on each draw
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api.on( 'draw', function () {
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// No point in updating - nothing has changed
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if ( api.page.len() === lastLength ) {
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return;
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}
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var menu = settings.aLengthMenu;
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var lang = menu.length===2 && $.isArray(menu[0]) ? menu[1] : menu;
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var lens = menu.length===2 && $.isArray(menu[0]) ? menu[0] : menu;
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var out = $.map( lens, function (el, i) {
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return el == api.page.len() ?
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'<a class="active" data-length="'+lens[i]+'">'+lang[i]+'</a>' :
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'<a data-length="'+lens[i]+'">'+lang[i]+'</a>';
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} );
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container.html( settings.oLanguage.sLengthMenu.replace( '_MENU_', out.join(' | ') ) );
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lastLength = api.page.len();
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} );
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api.on( 'destroy', function () {
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container.off( 'click.dtll', 'a' );
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} );
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};
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// Subscribe the feature plug-in to DataTables, ready for use
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$.fn.dataTable.ext.feature.push( {
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"fnInit": function( settings ) {
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var l = new $.fn.dataTable.LengthLinks( settings );
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return l.container();
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},
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"cFeature": "L",
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"sFeature": "LengthLinks"
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} );
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})(window, document, jQuery);
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