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92 lines
2.9 KiB
JavaScript
92 lines
2.9 KiB
JavaScript
7 years ago
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/*! Deep linking options parsing support for DataTables
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* 2017 SpryMedia Ltd - datatables.net/license
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*/
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/**
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* @summary LengthLinks
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* @description Deep linking options parsing support for DataTables
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* @version 1.0.0
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* @file dataTables.deepLink.js
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* @author SpryMedia Ltd (www.sprymedia.co.uk)
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* @copyright Copyright 2017 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 provides a function which will
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* take DataTables options from the browser's URL search string and
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* return an object that can be used to construct a DataTable. This
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* allows deep linking to be easily implemented with DataTables - for
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* example a URL might be `myTable?displayStart=10` which will
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* automatically cause the second page of the DataTable to be displayed.
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*
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* This plug-in works on a whitelist basis - you must specify which
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* [initialisation parameters](//datatables.net/reference/option) you
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* want the URL search string to specify. Any parameter given in the
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* URL which is not listed will be ignored (e.g. you are unlikely to
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* want to let the URL search string specify the `ajax` option).
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*
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* This specification is done by passing an array of property names
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* to the `$.fn.dataTable.ext.deepLink` function. If you do which to
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* allow _every_ parameter (I wouldn't recommend it) you can use `all`
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* instead of an array.
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*
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* @example
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* // Allow a display start point and search string to be specified
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* $('#myTable').DataTable(
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* $.fn.dataTable.ext.deepLink( [ 'displayStart', 'search.search' ] )
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* );
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*
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* @example
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* // As above, but with a default search
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* var options = $.fn.dataTable.ext.deepLink(['displayStart', 'search.search']);
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*
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* $('#myTable').DataTable(
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* $.extend( true, {
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* search: { search: 'Initial search value' }
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* }, options )
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* );
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*/
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(function(window, document, $, undefined) {
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// Use DataTables' object builder so strings can be used to represent
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// nested objects
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var setBuilder = $.fn.dataTable.ext.internal._fnSetObjectDataFn;
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$.fn.dataTable.ext.deepLink = function(whitelist) {
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var search = location.search.replace(/^\?/, '').split('&');
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var out = {};
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for (var i = 0, ien = search.length; i < ien; i++) {
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var pair = search[i].split('=');
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var key = decodeURIComponent(pair[0]);
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var value = decodeURIComponent(pair[1]);
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// "Casting"
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if (value === 'true') {
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value = true;
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}
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else if (value === 'false') {
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value = false;
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}
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else if (!value.match(/[^\d]/)) {
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value = value * 1;
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}
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else if (value.indexOf('{') === 0 || value.indexOf('[') === 0) {
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// Try to JSON parse for arrays and obejcts
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try {
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value = $.parseJSON( value );
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}
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catch(e){}
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}
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if (whitelist === 'all' || $.inArray(key, whitelist) !== -1) {
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var setter = setBuilder(key);
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setter(out, value);
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}
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}
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return out;
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};
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})(window, document, jQuery);
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