/*! ScrollResize for DataTables v1.0.0 * 2015 SpryMedia Ltd - datatables.net/license */ /** * @summary ScrollResize * @description Automatically alter the DataTables page length to fit the table into a container * @version 1.0.0 * @file dataTables.scrollResize.js * @author SpryMedia Ltd (www.sprymedia.co.uk) * @contact www.sprymedia.co.uk/contact * @copyright Copyright 2015 SpryMedia Ltd. * * License MIT - http://datatables.net/license/mit * * This feature plug-in for DataTables will automatically change the DataTables * page length in order to fit inside its container. This can be particularly * useful for control panels and other interfaces which resize dynamically with * the user's browser window instead of scrolling. * * Page resizing in DataTables can be enabled by using any one of the following * options: * * * Setting the `scrollResize` parameter in the DataTables initialisation to * be true - i.e. `scrollResize: true` * * Setting the `scrollResize` parameter to be true in the DataTables * defaults (thus causing all tables to have this feature) - i.e. * `$.fn.dataTable.defaults.scrollResize = true`. * * Creating a new instance: `new $.fn.dataTable.ScrollResize( table );` where * `table` is a DataTable's API instance. */ (function($){ var ScrollResize = function ( dt ) { var that = this; var table = dt.table(); this.s = { dt: dt, host: $(table.container()).parent(), header: $(table.header()), footer: $(table.footer()), body: $(table.body()), container: $(table.container()), table: $(table.node()) }; var host = this.s.host; if ( host.css('position') === 'static' ) { host.css( 'position', 'relative' ); } dt.on( 'draw', function () { that._size(); } ); this._attach(); this._size(); }; ScrollResize.prototype = { _size: function () { var settings = this.s; var dt = settings.dt; var t = dt.table(); var offsetTop = $( settings.table ).offset().top; var availableHeight = settings.host.height(); var scrollBody = $('div.dataTables_scrollBody', t.container()); // Subtract the height of the header, footer and the elements // surrounding the table availableHeight -= offsetTop; availableHeight -= settings.container.height() - ( offsetTop + scrollBody.height() ); $('div.dataTables_scrollBody').css( { maxHeight: availableHeight, height: availableHeight } ); if ( dt.fixedColumns ) { dt.fixedColumns().relayout(); } }, _attach: function () { // There is no `resize` event for elements, so to trigger this effect, // create an empty HTML document using an <iframe> which will issue a // resize event inside itself when the document resizes. Since it is // 100% x 100% that will occur whenever the host element is resized. var that = this; var obj = $('<iframe/>') .css( { position: 'absolute', top: 0, left: 0, height: '100%', width: '100%', zIndex: -1, border: 0 } ) .attr( 'frameBorder', '0' ) .attr( 'src', 'about:blank' ); obj[0].onload = function () { var body = this.contentDocument.body; var height = body.offsetHeight; var contentDoc = this.contentDocument; var defaultView = contentDoc.defaultView || contentDoc.parentWindow; defaultView.onresize = function () { // Three methods to get the iframe height, to keep all browsers happy var newHeight = body.clientHeight || body.offsetHeight; var docClientHeight = contentDoc.documentElement.clientHeight; if ( ! newHeight && docClientHeight ) { newHeight = docClientHeight; } if ( newHeight !== height ) { height = newHeight; that._size(); } }; }; obj .appendTo( this.s.host ) .attr( 'data', 'about:blank' ); } }; $.fn.dataTable.ScrollResize = ScrollResize; $.fn.DataTable.ScrollResize = ScrollResize; // Automatic initialisation listener $(document).on( 'init.dt', function ( e, settings ) { if ( e.namespace !== 'dt' ) { return; } var api = new $.fn.dataTable.Api( settings ); if ( settings.oInit.scrollResize || $.fn.dataTable.defaults.scrollResize ) { new ScrollResize( api ); } } ); }(jQuery));