New feature: PageResize feature that will automatically change the page length of a DataTable to fit a container.
Allan Jardine
10 years ago
parent
efa0618cbb
commit
10bd484af4
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/*! PageResize for DataTables v1.0.0
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* 2014 SpryMedia Ltd - datatables.net/license
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*/
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/**
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* @summary PageResize
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* @description Automatically alter the DataTables page length to fit the table
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into a container
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* @version 1.0.0
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* @file dataTables.pageResize.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 2015 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 will automatically change the DataTables
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* page length in order to fit inside its container. This can be particularly
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* useful for control panels and other interfaces which resize dynamically with
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* the user's browser window instead of scrolling.
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*
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* Page resizing in DataTables can be enabled by using any one of the following
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* options:
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*
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* * Adding the class `pageResize` to the HTML table
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* * Setting the `pageResize` parameter in the DataTables initialisation to
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* be true - i.e. `pageResize: true`
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* * Setting the `pageResize` parameter to be true in the DataTables
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* defaults (thus causing all tables to have this feature) - i.e.
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* `$.fn.dataTable.defaults.pageResize = true`.
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* * Creating a new instance: `new $.fn.dataTable.PageResize( table );` where
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* `table` is a DataTable's API instance.
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*
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* For more detailed information please see:
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* http://datatables.net/blog/
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*/
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(function($){
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var PageResize = function ( dt )
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{
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var table = dt.table();
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this.s = {
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dt: dt,
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host: $(table.container()).parent(),
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header: $(table.header()),
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footer: $(table.footer()),
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body: $(table.body()),
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container: $(table.container()),
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table: $(table.node())
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};
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var host = this.s.host;
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if ( host.css('position') === 'static' ) {
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host.css( 'position', 'relative' );
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}
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this._attach();
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this._size();
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}
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PageResize.prototype = {
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_size: function ()
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{
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var settings = this.s;
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var dt = settings.dt;
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var t = dt.table();
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var offsetTop = $( settings.table ).offset().top;
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var rowHeight = $( 'tr', settings.body ).eq(0).height();
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var availableHeight = settings.host.height();
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// Subtract the height of the header, footer and the elements
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// surrounding the table
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availableHeight -= settings.header.height();
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availableHeight -= settings.footer.height();
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availableHeight -= offsetTop;
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availableHeight -= settings.container.height() - ( offsetTop + settings.table.height() );
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var drawRows = Math.floor( availableHeight / rowHeight );
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if ( drawRows !== dt.page.len() ) {
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dt.page.len( drawRows ).draw();
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}
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},
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_attach: function () {
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// There is no `resize` event for elements, so to trigger this effect,
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// create an empty HTML document using an <object> which will issue a
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// resize event inside itself when the document resizes. Since it is
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// 100% x 100% that will occur whenever the host element is resized.
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var that = this;
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var obj = $('<object/>')
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.css( {
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position: 'absolute',
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top: 0,
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left: 0,
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height: '100%',
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width: '100%',
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zIndex: -1
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} )
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.attr( 'type', 'text/html' )
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.attr( 'data', 'about:blank' );
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obj[0].onload = function () {
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var body = this.contentDocument.body;
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var height = body.offsetHeight;
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this.contentDocument.defaultView.onresize = function () {
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var newHeight = body.offsetHeight;
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if ( newHeight !== height ) {
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height = newHeight;
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that._size();
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}
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}
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};
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obj.appendTo( this.s.host );
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}
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};
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$.fn.dataTable.PageResize = PageResize;
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$.fn.DataTable.PageResize = PageResize;
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// Automatic initialisation listener
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$(document).on( 'init.dt', function ( e, settings ) {
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var api = new $.fn.dataTable.Api( settings );
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if ( $( api.table().node() ).hasClass( 'pageResize' ) ||
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settings.oInit.pageResize ||
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$.fn.dataTable.defaults.pageResize )
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{
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new PageResize( api );
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}
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} );
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}(jQuery));
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@ -0,0 +1,7 @@
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/*!
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PageResize for DataTables v1.0.0
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2014 SpryMedia Ltd - datatables.net/license
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*/
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(function(c){var e=function(a){var b=a.table();this.s={dt:a,host:c(b.container()).parent(),header:c(b.header()),footer:c(b.footer()),body:c(b.body()),container:c(b.container()),table:c(b.node())};a=this.s.host;"static"===a.css("position")&&a.css("position","relative");this._attach();this._size()};e.prototype={_size:function(){var a=this.s,b=a.dt;b.table();var f=c(a.table).offset().top,e=c("tr",a.body).eq(0).height(),d=a.host.height(),d=d-a.header.height(),d=d-a.footer.height(),d=d-f-(a.container.height()-
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(f+a.table.height())),a=Math.floor(d/e);a!==b.page.len()&&b.page.len(a).draw()},_attach:function(){var a=this,b=c("<object/>").css({position:"absolute",top:0,left:0,height:"100%",width:"100%",zIndex:-1}).attr("type","text/html").attr("data","about:blank");b[0].onload=function(){var b=this.contentDocument.body,c=b.offsetHeight;this.contentDocument.defaultView.onresize=function(){var d=b.offsetHeight;d!==c&&(c=d,a._size())}};b.appendTo(this.s.host)}};c.fn.dataTable.PageResize=e;c.fn.DataTable.PageResize=
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e;c(document).on("init.dt",function(a,b){var f=new c.fn.dataTable.Api(b);(c(f.table().node()).hasClass("pageResize")||b.oInit.pageResize||c.fn.dataTable.defaults.pageResize)&&new e(f)})})(jQuery);
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