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| dataTables.fixedHeader.js | |||||
| dataTables.fixedHeader.min.js | |||||
| fixedHeader.bootstrap4.js | |||||
| fixedHeader.bootstrap4.min.js |
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/*! FixedHeader 3.1.5
* ©2009-2018 SpryMedia Ltd - datatables.net/license
*/
/**
* @summary FixedHeader
* @description Fix a table's header or footer, so it is always visible while
* scrolling
* @version 3.1.5
* @file dataTables.fixedHeader.js
* @author SpryMedia Ltd (www.sprymedia.co.uk)
* @contact www.sprymedia.co.uk/contact
* @copyright Copyright 2009-2018 SpryMedia Ltd.
*
* This source file is free software, available under the following license:
* MIT license - http://datatables.net/license/mit
*
* This source file is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the license files for details.
*
* For details please refer to: http://www.datatables.net
*/
(function( factory ){
if ( typeof define === 'function' && define.amd ) {
// AMD
define( ['jquery', 'datatables.net'], function ( $ ) {
return factory( $, window, document );
} );
}
else if ( typeof exports === 'object' ) {
// CommonJS
module.exports = function (root, $) {
if ( ! root ) {
root = window;
}
if ( ! $ || ! $.fn.dataTable ) {
$ = require('datatables.net')(root, $).$;
}
return factory( $, root, root.document );
};
}
else {
// Browser
factory( jQuery, window, document );
}
}(function( $, window, document, undefined ) {
'use strict';
var DataTable = $.fn.dataTable;
var _instCounter = 0;
var FixedHeader = function ( dt, config ) {
// Sanity check - you just know it will happen
if ( ! (this instanceof FixedHeader) ) {
throw "FixedHeader must be initialised with the 'new' keyword.";
}
// Allow a boolean true for defaults
if ( config === true ) {
config = {};
}
dt = new DataTable.Api( dt );
this.c = $.extend( true, {}, FixedHeader.defaults, config );
this.s = {
dt: dt,
position: {
theadTop: 0,
tbodyTop: 0,
tfootTop: 0,
tfootBottom: 0,
width: 0,
left: 0,
tfootHeight: 0,
theadHeight: 0,
windowHeight: $(window).height(),
visible: true
},
headerMode: null,
footerMode: null,
autoWidth: dt.settings()[0].oFeatures.bAutoWidth,
namespace: '.dtfc'+(_instCounter++),
scrollLeft: {
header: -1,
footer: -1
},
enable: true
};
this.dom = {
floatingHeader: null,
thead: $(dt.table().header()),
tbody: $(dt.table().body()),
tfoot: $(dt.table().footer()),
header: {
host: null,
floating: null,
placeholder: null
},
footer: {
host: null,
floating: null,
placeholder: null
}
};
this.dom.header.host = this.dom.thead.parent();
this.dom.footer.host = this.dom.tfoot.parent();
var dtSettings = dt.settings()[0];
if ( dtSettings._fixedHeader ) {
throw "FixedHeader already initialised on table "+dtSettings.nTable.id;
}
dtSettings._fixedHeader = this;
this._constructor();
};
/*
* Variable: FixedHeader
* Purpose: Prototype for FixedHeader
* Scope: global
*/
$.extend( FixedHeader.prototype, {
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* API methods
*/
/**
* Enable / disable the fixed elements
*
* @param {boolean} enable `true` to enable, `false` to disable
*/
enable: function ( enable )
{
this.s.enable = enable;
if ( this.c.header ) {
this._modeChange( 'in-place', 'header', true );
}
if ( this.c.footer && this.dom.tfoot.length ) {
this._modeChange( 'in-place', 'footer', true );
}
this.update();
},
/**
* Set header offset
*
* @param {int} new value for headerOffset
*/
headerOffset: function ( offset )
{
if ( offset !== undefined ) {
this.c.headerOffset = offset;
this.update();
}
return this.c.headerOffset;
},
/**
* Set footer offset
*
* @param {int} new value for footerOffset
*/
footerOffset: function ( offset )
{
if ( offset !== undefined ) {
this.c.footerOffset = offset;
this.update();
}
return this.c.footerOffset;
},
/**
* Recalculate the position of the fixed elements and force them into place
*/
update: function ()
{
this._positions();
this._scroll( true );
},
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Constructor
*/
/**
* FixedHeader constructor - adding the required event listeners and
* simple initialisation
*
* @private
*/
_constructor: function ()
{
var that = this;
var dt = this.s.dt;
$(window)
.on( 'scroll'+this.s.namespace, function () {
that._scroll();
} )
.on( 'resize'+this.s.namespace, DataTable.util.throttle( function () {
that.s.position.windowHeight = $(window).height();
that.update();
}, 50 ) );
var autoHeader = $('.fh-fixedHeader');
if ( ! this.c.headerOffset && autoHeader.length ) {
this.c.headerOffset = autoHeader.outerHeight();
}
var autoFooter = $('.fh-fixedFooter');
if ( ! this.c.footerOffset && autoFooter.length ) {
this.c.footerOffset = autoFooter.outerHeight();
}
dt.on( 'column-reorder.dt.dtfc column-visibility.dt.dtfc draw.dt.dtfc column-sizing.dt.dtfc responsive-display.dt.dtfc', function () {
that.update();
} );
dt.on( 'destroy.dtfc', function () {
if ( that.c.header ) {
that._modeChange( 'in-place', 'header', true );
}
if ( that.c.footer && that.dom.tfoot.length ) {
that._modeChange( 'in-place', 'footer', true );
}
dt.off( '.dtfc' );
$(window).off( that.s.namespace );
} );
this._positions();
this._scroll();
},
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Private methods
*/
/**
* Clone a fixed item to act as a place holder for the original element
* which is moved into a clone of the table element, and moved around the
* document to give the fixed effect.
*
* @param {string} item 'header' or 'footer'
* @param {boolean} force Force the clone to happen, or allow automatic
* decision (reuse existing if available)
* @private
*/
_clone: function ( item, force )
{
var dt = this.s.dt;
var itemDom = this.dom[ item ];
var itemElement = item === 'header' ?
this.dom.thead :
this.dom.tfoot;
if ( ! force && itemDom.floating ) {
// existing floating element - reuse it
itemDom.floating.removeClass( 'fixedHeader-floating fixedHeader-locked' );
}
else {
if ( itemDom.floating ) {
itemDom.placeholder.remove();
this._unsize( item );
itemDom.floating.children().detach();
itemDom.floating.remove();
}
itemDom.floating = $( dt.table().node().cloneNode( false ) )
.css( 'table-layout', 'fixed' )
.attr( 'aria-hidden', 'true' )
.removeAttr( 'id' )
.append( itemElement )
.appendTo( 'body' );
// Insert a fake thead/tfoot into the DataTable to stop it jumping around
itemDom.placeholder = itemElement.clone( false )
itemDom.placeholder
.find( '*[id]' )
.removeAttr( 'id' );
itemDom.host.prepend( itemDom.placeholder );
// Clone widths
this._matchWidths( itemDom.placeholder, itemDom.floating );
}
},
/**
* Copy widths from the cells in one element to another. This is required
* for the footer as the footer in the main table takes its sizes from the
* header columns. That isn't present in the footer so to have it still
* align correctly, the sizes need to be copied over. It is also required
* for the header when auto width is not enabled
*
* @param {jQuery} from Copy widths from
* @param {jQuery} to Copy widths to
* @private
*/
_matchWidths: function ( from, to ) {
var get = function ( name ) {
return $(name, from)
.map( function () {
return $(this).width();
} ).toArray();
};
var set = function ( name, toWidths ) {
$(name, to).each( function ( i ) {
$(this).css( {
width: toWidths[i],
minWidth: toWidths[i]
} );
} );
};
var thWidths = get( 'th' );
var tdWidths = get( 'td' );
set( 'th', thWidths );
set( 'td', tdWidths );
},
/**
* Remove assigned widths from the cells in an element. This is required
* when inserting the footer back into the main table so the size is defined
* by the header columns and also when auto width is disabled in the
* DataTable.
*
* @param {string} item The `header` or `footer`
* @private
*/
_unsize: function ( item ) {
var el = this.dom[ item ].floating;
if ( el && (item === 'footer' || (item === 'header' && ! this.s.autoWidth)) ) {
$('th, td', el).css( {
width: '',
minWidth: ''
} );
}
else if ( el && item === 'header' ) {
$('th, td', el).css( 'min-width', '' );
}
},
/**
* Reposition the floating elements to take account of horizontal page
* scroll
*
* @param {string} item The `header` or `footer`
* @param {int} scrollLeft Document scrollLeft
* @private
*/
_horizontal: function ( item, scrollLeft )
{
var itemDom = this.dom[ item ];
var position = this.s.position;
var lastScrollLeft = this.s.scrollLeft;
if ( itemDom.floating && lastScrollLeft[ item ] !== scrollLeft ) {
itemDom.floating.css( 'left', position.left - scrollLeft );
lastScrollLeft[ item ] = scrollLeft;
}
},
/**
* Change from one display mode to another. Each fixed item can be in one
* of:
*
* * `in-place` - In the main DataTable
* * `in` - Floating over the DataTable
* * `below` - (Header only) Fixed to the bottom of the table body
* * `above` - (Footer only) Fixed to the top of the table body
*
* @param {string} mode Mode that the item should be shown in
* @param {string} item 'header' or 'footer'
* @param {boolean} forceChange Force a redraw of the mode, even if already
* in that mode.
* @private
*/
_modeChange: function ( mode, item, forceChange )
{
var dt = this.s.dt;
var itemDom = this.dom[ item ];
var position = this.s.position;
// Record focus. Browser's will cause input elements to loose focus if
// they are inserted else where in the doc
var tablePart = this.dom[ item==='footer' ? 'tfoot' : 'thead' ];
var focus = $.contains( tablePart[0], document.activeElement ) ?
document.activeElement :
null;
if ( focus ) {
focus.blur();
}
if ( mode === 'in-place' ) {
// Insert the header back into the table's real header
if ( itemDom.placeholder ) {
itemDom.placeholder.remove();
itemDom.placeholder = null;
}
this._unsize( item );
if ( item === 'header' ) {
itemDom.host.prepend( tablePart );
}
else {
itemDom.host.append( tablePart );
}
if ( itemDom.floating ) {
itemDom.floating.remove();
itemDom.floating = null;
}
}
else if ( mode === 'in' ) {
// Remove the header from the read header and insert into a fixed
// positioned floating table clone
this._clone( item, forceChange );
itemDom.floating
.addClass( 'fixedHeader-floating' )
.css( item === 'header' ? 'top' : 'bottom', this.c[item+'Offset'] )
.css( 'left', position.left+'px' )
.css( 'width', position.width+'px' );
if ( item === 'footer' ) {
itemDom.floating.css( 'top', '' );
}
}
else if ( mode === 'below' ) { // only used for the header
// Fix the position of the floating header at base of the table body
this._clone( item, forceChange );
itemDom.floating
.addClass( 'fixedHeader-locked' )
.css( 'top', position.tfootTop - position.theadHeight )
.css( 'left', position.left+'px' )
.css( 'width', position.width+'px' );
}
else if ( mode === 'above' ) { // only used for the footer
// Fix the position of the floating footer at top of the table body
this._clone( item, forceChange );
itemDom.floating
.addClass( 'fixedHeader-locked' )
.css( 'top', position.tbodyTop )
.css( 'left', position.left+'px' )
.css( 'width', position.width+'px' );
}
// Restore focus if it was lost
if ( focus && focus !== document.activeElement ) {
setTimeout( function () {
focus.focus();
}, 10 );
}
this.s.scrollLeft.header = -1;
this.s.scrollLeft.footer = -1;
this.s[item+'Mode'] = mode;
},
/**
* Cache the positional information that is required for the mode
* calculations that FixedHeader performs.
*
* @private
*/
_positions: function ()
{
var dt = this.s.dt;
var table = dt.table();
var position = this.s.position;
var dom = this.dom;
var tableNode = $(table.node());
// Need to use the header and footer that are in the main table,
// regardless of if they are clones, since they hold the positions we
// want to measure from
var thead = tableNode.children('thead');
var tfoot = tableNode.children('tfoot');
var tbody = dom.tbody;
position.visible = tableNode.is(':visible');
position.width = tableNode.outerWidth();
position.left = tableNode.offset().left;
position.theadTop = thead.offset().top;
position.tbodyTop = tbody.offset().top;
position.theadHeight = position.tbodyTop - position.theadTop;
if ( tfoot.length ) {
position.tfootTop = tfoot.offset().top;
position.tfootBottom = position.tfootTop + tfoot.outerHeight();
position.tfootHeight = position.tfootBottom - position.tfootTop;
}
else {
position.tfootTop = position.tbodyTop + tbody.outerHeight();
position.tfootBottom = position.tfootTop;
position.tfootHeight = position.tfootTop;
}
},
/**
* Mode calculation - determine what mode the fixed items should be placed
* into.
*
* @param {boolean} forceChange Force a redraw of the mode, even if already
* in that mode.
* @private
*/
_scroll: function ( forceChange )
{
var windowTop = $(document).scrollTop();
var windowLeft = $(document).scrollLeft();
var position = this.s.position;
var headerMode, footerMode;
if ( ! this.s.enable ) {
return;
}
if ( this.c.header ) {
if ( ! position.visible || windowTop <= position.theadTop - this.c.headerOffset ) {
headerMode = 'in-place';
}
else if ( windowTop <= position.tfootTop - position.theadHeight - this.c.headerOffset ) {
headerMode = 'in';
}
else {
headerMode = 'below';
}
if ( forceChange || headerMode !== this.s.headerMode ) {
this._modeChange( headerMode, 'header', forceChange );
}
this._horizontal( 'header', windowLeft );
}
if ( this.c.footer && this.dom.tfoot.length ) {
if ( ! position.visible || windowTop + position.windowHeight >= position.tfootBottom + this.c.footerOffset ) {
footerMode = 'in-place';
}
else if ( position.windowHeight + windowTop > position.tbodyTop + position.tfootHeight + this.c.footerOffset ) {
footerMode = 'in';
}
else {
footerMode = 'above';
}
if ( forceChange || footerMode !== this.s.footerMode ) {
this._modeChange( footerMode, 'footer', forceChange );
}
this._horizontal( 'footer', windowLeft );
}
}
} );
/**
* Version
* @type {String}
* @static
*/
FixedHeader.version = "3.1.5";
/**
* Defaults
* @type {Object}
* @static
*/
FixedHeader.defaults = {
header: true,
footer: false,
headerOffset: 0,
footerOffset: 0
};
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* DataTables interfaces
*/
// Attach for constructor access
$.fn.dataTable.FixedHeader = FixedHeader;
$.fn.DataTable.FixedHeader = FixedHeader;
// DataTables creation - check if the FixedHeader option has been defined on the
// table and if so, initialise
$(document).on( 'init.dt.dtfh', function (e, settings, json) {
if ( e.namespace !== 'dt' ) {
return;
}
var init = settings.oInit.fixedHeader;
var defaults = DataTable.defaults.fixedHeader;
if ( (init || defaults) && ! settings._fixedHeader ) {
var opts = $.extend( {}, defaults, init );
if ( init !== false ) {
new FixedHeader( settings, opts );
}
}
} );
// DataTables API methods
DataTable.Api.register( 'fixedHeader()', function () {} );
DataTable.Api.register( 'fixedHeader.adjust()', function () {
return this.iterator( 'table', function ( ctx ) {
var fh = ctx._fixedHeader;
if ( fh ) {
fh.update();
}
} );
} );
DataTable.Api.register( 'fixedHeader.enable()', function ( flag ) {
return this.iterator( 'table', function ( ctx ) {
var fh = ctx._fixedHeader;
flag = ( flag !== undefined ? flag : true );
if ( fh && flag !== fh.s.enable ) {
fh.enable( flag );
}
} );
} );
DataTable.Api.register( 'fixedHeader.disable()', function ( ) {
return this.iterator( 'table', function ( ctx ) {
var fh = ctx._fixedHeader;
if ( fh && fh.s.enable ) {
fh.enable( false );
}
} );
} );
$.each( ['header', 'footer'], function ( i, el ) {
DataTable.Api.register( 'fixedHeader.'+el+'Offset()', function ( offset ) {
var ctx = this.context;
if ( offset === undefined ) {
return ctx.length && ctx[0]._fixedHeader ?
ctx[0]._fixedHeader[el +'Offset']() :
undefined;
}
return this.iterator( 'table', function ( ctx ) {
var fh = ctx._fixedHeader;
if ( fh ) {
fh[ el +'Offset' ]( offset );
}
} );
} );
} );
return FixedHeader;
}));
| .. | |||||
| dataTables.fixedHeader.js | |||||
| dataTables.fixedHeader.min.js | |||||
| fixedHeader.bootstrap4.js | |||||
| fixedHeader.bootstrap4.min.js |