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vendor/javascript/datatables/RowReorder-1.2.8/js/dataTables.rowReorder.js | 820 lines | 20.8 KiB | application/javascript | JavascriptLexer |
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 r866 /*! RowReorder 1.2.8
* 2015-2020 SpryMedia Ltd - datatables.net/license
*/
/**
* @summary RowReorder
* @description Row reordering extension for DataTables
* @version 1.2.8
* @file dataTables.rowReorder.js
* @author SpryMedia Ltd (www.sprymedia.co.uk)
* @contact www.sprymedia.co.uk/contact
* @copyright Copyright 2015-2020 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;
/**
* RowReorder provides the ability in DataTables to click and drag rows to
* reorder them. When a row is dropped the data for the rows effected will be
* updated to reflect the change. Normally this data point should also be the
* column being sorted upon in the DataTable but this does not need to be the
* case. RowReorder implements a "data swap" method - so the rows being
* reordered take the value of the data point from the row that used to occupy
* the row's new position.
*
* Initialisation is done by either:
*
* * `rowReorder` parameter in the DataTable initialisation object
* * `new $.fn.dataTable.RowReorder( table, opts )` after DataTables
* initialisation.
*
* @class
* @param {object} settings DataTables settings object for the host table
* @param {object} [opts] Configuration options
* @requires jQuery 1.7+
* @requires DataTables 1.10.7+
*/
var RowReorder = function ( dt, opts ) {
// Sanity check that we are using DataTables 1.10 or newer
if ( ! DataTable.versionCheck || ! DataTable.versionCheck( '1.10.8' ) ) {
throw 'DataTables RowReorder requires DataTables 1.10.8 or newer';
}
// User and defaults configuration object
this.c = $.extend( true, {},
DataTable.defaults.rowReorder,
RowReorder.defaults,
opts
);
// Internal settings
this.s = {
/** @type {integer} Scroll body top cache */
bodyTop: null,
/** @type {DataTable.Api} DataTables' API instance */
dt: new DataTable.Api( dt ),
/** @type {function} Data fetch function */
getDataFn: DataTable.ext.oApi._fnGetObjectDataFn( this.c.dataSrc ),
/** @type {array} Pixel positions for row insertion calculation */
middles: null,
/** @type {Object} Cached dimension information for use in the mouse move event handler */
scroll: {},
/** @type {integer} Interval object used for smooth scrolling */
scrollInterval: null,
/** @type {function} Data set function */
setDataFn: DataTable.ext.oApi._fnSetObjectDataFn( this.c.dataSrc ),
/** @type {Object} Mouse down information */
start: {
top: 0,
left: 0,
offsetTop: 0,
offsetLeft: 0,
nodes: []
},
/** @type {integer} Window height cached value */
windowHeight: 0,
/** @type {integer} Document outer height cached value */
documentOuterHeight: 0,
/** @type {integer} DOM clone outer height cached value */
domCloneOuterHeight: 0
};
// DOM items
this.dom = {
/** @type {jQuery} Cloned row being moved around */
clone: null,
/** @type {jQuery} DataTables scrolling container */
dtScroll: $('div.dataTables_scrollBody', this.s.dt.table().container())
};
// Check if row reorder has already been initialised on this table
var settings = this.s.dt.settings()[0];
var exisiting = settings.rowreorder;
if ( exisiting ) {
return exisiting;
}
if ( !this.dom.dtScroll.length ) {
this.dom.dtScroll = $(this.s.dt.table().container(), 'tbody')
}
settings.rowreorder = this;
this._constructor();
};
$.extend( RowReorder.prototype, {
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Constructor
*/
/**
* Initialise the RowReorder instance
*
* @private
*/
_constructor: function ()
{
var that = this;
var dt = this.s.dt;
var table = $( dt.table().node() );
// Need to be able to calculate the row positions relative to the table
if ( table.css('position') === 'static' ) {
table.css( 'position', 'relative' );
}
// listen for mouse down on the target column - we have to implement
// this rather than using HTML5 drag and drop as drag and drop doesn't
// appear to work on table rows at this time. Also mobile browsers are
// not supported.
// Use `table().container()` rather than just the table node for IE8 -
// otherwise it only works once...
$(dt.table().container()).on( 'mousedown.rowReorder touchstart.rowReorder', this.c.selector, function (e) {
if ( ! that.c.enable ) {
return;
}
// Ignore excluded children of the selector
if ( $(e.target).is(that.c.excludedChildren) ) {
return true;
}
var tr = $(this).closest('tr');
var row = dt.row( tr );
// Double check that it is a DataTable row
if ( row.any() ) {
that._emitEvent( 'pre-row-reorder', {
node: row.node(),
index: row.index()
} );
that._mouseDown( e, tr );
return false;
}
} );
dt.on( 'destroy.rowReorder', function () {
$(dt.table().container()).off( '.rowReorder' );
dt.off( '.rowReorder' );
} );
},
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Private methods
*/
/**
* Cache the measurements that RowReorder needs in the mouse move handler
* to attempt to speed things up, rather than reading from the DOM.
*
* @private
*/
_cachePositions: function ()
{
var dt = this.s.dt;
// Frustratingly, if we add `position:relative` to the tbody, the
// position is still relatively to the parent. So we need to adjust
// for that
var headerHeight = $( dt.table().node() ).find('thead').outerHeight();
// Need to pass the nodes through jQuery to get them in document order,
// not what DataTables thinks it is, since we have been altering the
// order
var nodes = $.unique( dt.rows( { page: 'current' } ).nodes().toArray() );
var middles = $.map( nodes, function ( node, i ) {
var top = $(node).position().top - headerHeight;
return (top + top + $(node).outerHeight() ) / 2;
} );
this.s.middles = middles;
this.s.bodyTop = $( dt.table().body() ).offset().top;
this.s.windowHeight = $(window).height();
this.s.documentOuterHeight = $(document).outerHeight();
},
/**
* Clone a row so it can be floated around the screen
*
* @param {jQuery} target Node to be cloned
* @private
*/
_clone: function ( target )
{
var dt = this.s.dt;
var clone = $( dt.table().node().cloneNode(false) )
.addClass( 'dt-rowReorder-float' )
.append('<tbody/>')
.append( target.clone( false ) );
// Match the table and column widths - read all sizes before setting
// to reduce reflows
var tableWidth = target.outerWidth();
var tableHeight = target.outerHeight();
var sizes = target.children().map( function () {
return $(this).width();
} );
clone
.width( tableWidth )
.height( tableHeight )
.find('tr').children().each( function (i) {
this.style.width = sizes[i]+'px';
} );
// Insert into the document to have it floating around
clone.appendTo( 'body' );
this.dom.clone = clone;
this.s.domCloneOuterHeight = clone.outerHeight();
},
/**
* Update the cloned item's position in the document
*
* @param {object} e Event giving the mouse's position
* @private
*/
_clonePosition: function ( e )
{
var start = this.s.start;
var topDiff = this._eventToPage( e, 'Y' ) - start.top;
var leftDiff = this._eventToPage( e, 'X' ) - start.left;
var snap = this.c.snapX;
var left;
var top = topDiff + start.offsetTop;
if ( snap === true ) {
left = start.offsetLeft;
}
else if ( typeof snap === 'number' ) {
left = start.offsetLeft + snap;
}
else {
left = leftDiff + start.offsetLeft;
}
if(top < 0) {
top = 0
}
else if(top + this.s.domCloneOuterHeight > this.s.documentOuterHeight) {
top = this.s.documentOuterHeight - this.s.domCloneOuterHeight;
}
this.dom.clone.css( {
top: top,
left: left
} );
},
/**
* Emit an event on the DataTable for listeners
*
* @param {string} name Event name
* @param {array} args Event arguments
* @private
*/
_emitEvent: function ( name, args )
{
this.s.dt.iterator( 'table', function ( ctx, i ) {
$(ctx.nTable).triggerHandler( name+'.dt', args );
} );
},
/**
* Get pageX/Y position from an event, regardless of if it is a mouse or
* touch event.
*
* @param {object} e Event
* @param {string} pos X or Y (must be a capital)
* @private
*/
_eventToPage: function ( e, pos )
{
if ( e.type.indexOf( 'touch' ) !== -1 ) {
return e.originalEvent.touches[0][ 'page'+pos ];
}
return e[ 'page'+pos ];
},
/**
* Mouse down event handler. Read initial positions and add event handlers
* for the move.
*
* @param {object} e Mouse event
* @param {jQuery} target TR element that is to be moved
* @private
*/
_mouseDown: function ( e, target )
{
var that = this;
var dt = this.s.dt;
var start = this.s.start;
var offset = target.offset();
start.top = this._eventToPage( e, 'Y' );
start.left = this._eventToPage( e, 'X' );
start.offsetTop = offset.top;
start.offsetLeft = offset.left;
start.nodes = $.unique( dt.rows( { page: 'current' } ).nodes().toArray() );
this._cachePositions();
this._clone( target );
this._clonePosition( e );
this.dom.target = target;
target.addClass( 'dt-rowReorder-moving' );
$( document )
.on( 'mouseup.rowReorder touchend.rowReorder', function (e) {
that._mouseUp(e);
} )
.on( 'mousemove.rowReorder touchmove.rowReorder', function (e) {
that._mouseMove(e);
} );
// Check if window is x-scrolling - if not, disable it for the duration
// of the drag
if ( $(window).width() === $(document).width() ) {
$(document.body).addClass( 'dt-rowReorder-noOverflow' );
}
// Cache scrolling information so mouse move doesn't need to read.
// This assumes that the window and DT scroller will not change size
// during an row drag, which I think is a fair assumption
var scrollWrapper = this.dom.dtScroll;
this.s.scroll = {
windowHeight: $(window).height(),
windowWidth: $(window).width(),
dtTop: scrollWrapper.length ? scrollWrapper.offset().top : null,
dtLeft: scrollWrapper.length ? scrollWrapper.offset().left : null,
dtHeight: scrollWrapper.length ? scrollWrapper.outerHeight() : null,
dtWidth: scrollWrapper.length ? scrollWrapper.outerWidth() : null
};
},
/**
* Mouse move event handler - move the cloned row and shuffle the table's
* rows if required.
*
* @param {object} e Mouse event
* @private
*/
_mouseMove: function ( e )
{
this._clonePosition( e );
// Transform the mouse position into a position in the table's body
var bodyY = this._eventToPage( e, 'Y' ) - this.s.bodyTop;
var middles = this.s.middles;
var insertPoint = null;
var dt = this.s.dt;
// Determine where the row should be inserted based on the mouse
// position
for ( var i=0, ien=middles.length ; i<ien ; i++ ) {
if ( bodyY < middles[i] ) {
insertPoint = i;
break;
}
}
if ( insertPoint === null ) {
insertPoint = middles.length;
}
// Perform the DOM shuffle if it has changed from last time
if ( this.s.lastInsert === null || this.s.lastInsert !== insertPoint ) {
var nodes = $.unique( dt.rows( { page: 'current' } ).nodes().toArray() );
if ( insertPoint > this.s.lastInsert ) {
this.dom.target.insertAfter( nodes[ insertPoint-1 ] );
}
else {
this.dom.target.insertBefore( nodes[ insertPoint ] );
}
this._cachePositions();
this.s.lastInsert = insertPoint;
}
this._shiftScroll( e );
},
/**
* Mouse up event handler - release the event handlers and perform the
* table updates
*
* @param {object} e Mouse event
* @private
*/
_mouseUp: function ( e )
{
var that = this;
var dt = this.s.dt;
var i, ien;
var dataSrc = this.c.dataSrc;
this.dom.clone.remove();
this.dom.clone = null;
this.dom.target.removeClass( 'dt-rowReorder-moving' );
//this.dom.target = null;
$(document).off( '.rowReorder' );
$(document.body).removeClass( 'dt-rowReorder-noOverflow' );
clearInterval( this.s.scrollInterval );
this.s.scrollInterval = null;
// Calculate the difference
var startNodes = this.s.start.nodes;
var endNodes = $.unique( dt.rows( { page: 'current' } ).nodes().toArray() );
var idDiff = {};
var fullDiff = [];
var diffNodes = [];
var getDataFn = this.s.getDataFn;
var setDataFn = this.s.setDataFn;
for ( i=0, ien=startNodes.length ; i<ien ; i++ ) {
if ( startNodes[i] !== endNodes[i] ) {
var id = dt.row( endNodes[i] ).id();
var endRowData = dt.row( endNodes[i] ).data();
var startRowData = dt.row( startNodes[i] ).data();
if ( id ) {
idDiff[ id ] = getDataFn( startRowData );
}
fullDiff.push( {
node: endNodes[i],
oldData: getDataFn( endRowData ),
newData: getDataFn( startRowData ),
newPosition: i,
oldPosition: $.inArray( endNodes[i], startNodes )
} );
diffNodes.push( endNodes[i] );
}
}
// Create event args
var eventArgs = [ fullDiff, {
dataSrc: dataSrc,
nodes: diffNodes,
values: idDiff,
triggerRow: dt.row( this.dom.target ),
originalEvent: e
} ];
// Emit event
this._emitEvent( 'row-reorder', eventArgs );
var update = function () {
if ( that.c.update ) {
for ( i=0, ien=fullDiff.length ; i<ien ; i++ ) {
var row = dt.row( fullDiff[i].node );
var rowData = row.data();
setDataFn( rowData, fullDiff[i].newData );
// Invalidate the cell that has the same data source as the dataSrc
dt.columns().every( function () {
if ( this.dataSrc() === dataSrc ) {
dt.cell( fullDiff[i].node, this.index() ).invalidate( 'data' );
}
} );
}
// Trigger row reordered event
that._emitEvent( 'row-reordered', eventArgs );
dt.draw( false );
}
};
// Editor interface
if ( this.c.editor ) {
// Disable user interaction while Editor is submitting
this.c.enable = false;
this.c.editor
.edit(
diffNodes,
false,
$.extend( {submit: 'changed'}, this.c.formOptions )
)
.multiSet( dataSrc, idDiff )
.one( 'preSubmitCancelled.rowReorder', function () {
that.c.enable = true;
that.c.editor.off( '.rowReorder' );
dt.draw( false );
} )
.one( 'submitUnsuccessful.rowReorder', function () {
dt.draw( false );
} )
.one( 'submitSuccess.rowReorder', function () {
update();
} )
.one( 'submitComplete', function () {
that.c.enable = true;
that.c.editor.off( '.rowReorder' );
} )
.submit();
}
else {
update();
}
},
/**
* Move the window and DataTables scrolling during a drag to scroll new
* content into view.
*
* This matches the `_shiftScroll` method used in AutoFill, but only
* horizontal scrolling is considered here.
*
* @param {object} e Mouse move event object
* @private
*/
_shiftScroll: function ( e )
{
var that = this;
var dt = this.s.dt;
var scroll = this.s.scroll;
var runInterval = false;
var scrollSpeed = 5;
var buffer = 65;
var
windowY = e.pageY - document.body.scrollTop,
windowVert,
dtVert;
// Window calculations - based on the mouse position in the window,
// regardless of scrolling
if ( windowY < $(window).scrollTop() + buffer ) {
windowVert = scrollSpeed * -1;
}
else if ( windowY > scroll.windowHeight + $(window).scrollTop() - buffer ) {
windowVert = scrollSpeed;
}
// DataTables scrolling calculations - based on the table's position in
// the document and the mouse position on the page
if ( scroll.dtTop !== null && e.pageY < scroll.dtTop + buffer ) {
dtVert = scrollSpeed * -1;
}
else if ( scroll.dtTop !== null && e.pageY > scroll.dtTop + scroll.dtHeight - buffer ) {
dtVert = scrollSpeed;
}
// This is where it gets interesting. We want to continue scrolling
// without requiring a mouse move, so we need an interval to be
// triggered. The interval should continue until it is no longer needed,
// but it must also use the latest scroll commands (for example consider
// that the mouse might move from scrolling up to scrolling left, all
// with the same interval running. We use the `scroll` object to "pass"
// this information to the interval. Can't use local variables as they
// wouldn't be the ones that are used by an already existing interval!
if ( windowVert || dtVert ) {
scroll.windowVert = windowVert;
scroll.dtVert = dtVert;
runInterval = true;
}
else if ( this.s.scrollInterval ) {
// Don't need to scroll - remove any existing timer
clearInterval( this.s.scrollInterval );
this.s.scrollInterval = null;
}
// If we need to run the interval to scroll and there is no existing
// interval (if there is an existing one, it will continue to run)
if ( ! this.s.scrollInterval && runInterval ) {
this.s.scrollInterval = setInterval( function () {
// Don't need to worry about setting scroll <0 or beyond the
// scroll bound as the browser will just reject that.
if ( scroll.windowVert ) {
var top = $(document).scrollTop();
$(document).scrollTop(top + scroll.windowVert);
if ( top !== $(document).scrollTop() ) {
var move = parseFloat(that.dom.clone.css("top"));
that.dom.clone.css("top", move + scroll.windowVert);
}
}
// DataTables scrolling
if ( scroll.dtVert ) {
var scroller = that.dom.dtScroll[0];
if ( scroll.dtVert ) {
scroller.scrollTop += scroll.dtVert;
}
}
}, 20 );
}
}
} );
/**
* RowReorder default settings for initialisation
*
* @namespace
* @name RowReorder.defaults
* @static
*/
RowReorder.defaults = {
/**
* Data point in the host row's data source object for where to get and set
* the data to reorder. This will normally also be the sorting column.
*
* @type {Number}
*/
dataSrc: 0,
/**
* Editor instance that will be used to perform the update
*
* @type {DataTable.Editor}
*/
editor: null,
/**
* Enable / disable RowReorder's user interaction
* @type {Boolean}
*/
enable: true,
/**
* Form options to pass to Editor when submitting a change in the row order.
* See the Editor `from-options` object for details of the options
* available.
* @type {Object}
*/
formOptions: {},
/**
* Drag handle selector. This defines the element that when dragged will
* reorder a row.
*
* @type {String}
*/
selector: 'td:first-child',
/**
* Optionally lock the dragged row's x-position. This can be `true` to
* fix the position match the host table's, `false` to allow free movement
* of the row, or a number to define an offset from the host table.
*
* @type {Boolean|number}
*/
snapX: false,
/**
* Update the table's data on drop
*
* @type {Boolean}
*/
update: true,
/**
* Selector for children of the drag handle selector that mouseDown events
* will be passed through to and drag will not activate
*
* @type {String}
*/
excludedChildren: 'a'
};
/*
* API
*/
var Api = $.fn.dataTable.Api;
// Doesn't do anything - work around for a bug in DT... Not documented
Api.register( 'rowReorder()', function () {
return this;
} );
Api.register( 'rowReorder.enable()', function ( toggle ) {
if ( toggle === undefined ) {
toggle = true;
}
return this.iterator( 'table', function ( ctx ) {
if ( ctx.rowreorder ) {
ctx.rowreorder.c.enable = toggle;
}
} );
} );
Api.register( 'rowReorder.disable()', function () {
return this.iterator( 'table', function ( ctx ) {
if ( ctx.rowreorder ) {
ctx.rowreorder.c.enable = false;
}
} );
} );
/**
* Version information
*
* @name RowReorder.version
* @static
*/
RowReorder.version = '1.2.8';
$.fn.dataTable.RowReorder = RowReorder;
$.fn.DataTable.RowReorder = RowReorder;
// Attach a listener to the document which listens for DataTables initialisation
// events so we can automatically initialise
$(document).on( 'init.dt.dtr', function (e, settings, json) {
if ( e.namespace !== 'dt' ) {
return;
}
var init = settings.oInit.rowReorder;
var defaults = DataTable.defaults.rowReorder;
if ( init || defaults ) {
var opts = $.extend( {}, init, defaults );
if ( init !== false ) {
new RowReorder( settings, opts );
}
}
} );
return RowReorder;
}));