/*!

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* jQuery UI Selectable 1.12.1

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* http://jqueryui.com

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*

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* Copyright jQuery Foundation and other contributors

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* Released under the MIT license.

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* http://jquery.org/license

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*/

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//>>label: Selectable

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//>>group: Interactions

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//>>description: Allows groups of elements to be selected with the mouse.

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//>>docs: http://api.jqueryui.com/selectable/

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//>>demos: http://jqueryui.com/selectable/

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//>>css.structure: ../../themes/base/selectable.css

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( function( factory ) {

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if ( typeof define === "function" && define.amd ) {

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// AMD. Register as an anonymous module.

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define( [

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"jquery",

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"./mouse",

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"./core"

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], factory );

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} else {

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// Browser globals

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factory( jQuery );

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}

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}( function( $ ) {

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return $.widget( "ui.selectable", $.ui.mouse, {

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version: "1.12.1",

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options: {

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appendTo: "body",

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autoRefresh: true,

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distance: 0,

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filter: "*",

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tolerance: "touch",

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// Callbacks

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selected: null,

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selecting: null,

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start: null,

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stop: null,

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unselected: null,

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unselecting: null

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},

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_create: function() {

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var that = this;

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this._addClass( "ui-selectable" );

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this.dragged = false;

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// Cache selectee children based on filter

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this.refresh = function() {

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that.elementPos = $( that.element[ 0 ] ).offset();

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that.selectees = $( that.options.filter, that.element[ 0 ] );

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that._addClass( that.selectees, "ui-selectee" );

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that.selectees.each( function() {

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var $this = $( this ),

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selecteeOffset = $this.offset(),

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pos = {

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left: selecteeOffset.left - that.elementPos.left,

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top: selecteeOffset.top - that.elementPos.top

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};

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$.data( this, "selectable-item", {

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element: this,

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$element: $this,

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left: pos.left,

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top: pos.top,

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right: pos.left + $this.outerWidth(),

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bottom: pos.top + $this.outerHeight(),

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startselected: false,

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selected: $this.hasClass( "ui-selected" ),

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selecting: $this.hasClass( "ui-selecting" ),

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unselecting: $this.hasClass( "ui-unselecting" )

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} );

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} );

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};

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this.refresh();

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this._mouseInit();

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this.helper = $( "<div>" );

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this._addClass( this.helper, "ui-selectable-helper" );

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},

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_destroy: function() {

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this.selectees.removeData( "selectable-item" );

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this._mouseDestroy();

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},

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_mouseStart: function( event ) {

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var that = this,

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options = this.options;

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this.opos = [ event.pageX, event.pageY ];

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this.elementPos = $( this.element[ 0 ] ).offset();

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if ( this.options.disabled ) {

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return;

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}

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this.selectees = $( options.filter, this.element[ 0 ] );

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this._trigger( "start", event );

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$( options.appendTo ).append( this.helper );

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// position helper (lasso)

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this.helper.css( {

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"left": event.pageX,

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"top": event.pageY,

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"width": 0,

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"height": 0

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} );

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if ( options.autoRefresh ) {

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this.refresh();

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}

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this.selectees.filter( ".ui-selected" ).each( function() {

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var selectee = $.data( this, "selectable-item" );

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selectee.startselected = true;

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if ( !event.metaKey && !event.ctrlKey ) {

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that._removeClass( selectee.$element, "ui-selected" );

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selectee.selected = false;

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that._addClass( selectee.$element, "ui-unselecting" );

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selectee.unselecting = true;

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// selectable UNSELECTING callback

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that._trigger( "unselecting", event, {

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unselecting: selectee.element

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} );

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}

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} );

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$( event.target ).parents().addBack().each( function() {

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var doSelect,

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selectee = $.data( this, "selectable-item" );

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if ( selectee ) {

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doSelect = ( !event.metaKey && !event.ctrlKey ) ||

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!selectee.$element.hasClass( "ui-selected" );

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that._removeClass( selectee.$element, doSelect ? "ui-unselecting" : "ui-selected" )

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._addClass( selectee.$element, doSelect ? "ui-selecting" : "ui-unselecting" );

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selectee.unselecting = !doSelect;

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selectee.selecting = doSelect;

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selectee.selected = doSelect;

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// selectable (UN)SELECTING callback

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if ( doSelect ) {

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that._trigger( "selecting", event, {

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selecting: selectee.element

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} );

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} else {

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that._trigger( "unselecting", event, {

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unselecting: selectee.element

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} );

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}

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return false;

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}

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} );

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},

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_mouseDrag: function( event ) {

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this.dragged = true;

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if ( this.options.disabled ) {

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return;

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}

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var tmp,

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that = this,

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options = this.options,

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x1 = this.opos[ 0 ],

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y1 = this.opos[ 1 ],

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x2 = event.pageX,

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y2 = event.pageY;

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if ( x1 > x2 ) { tmp = x2; x2 = x1; x1 = tmp; }

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if ( y1 > y2 ) { tmp = y2; y2 = y1; y1 = tmp; }

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this.helper.css( { left: x1, top: y1, width: x2 - x1, height: y2 - y1 } );

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this.selectees.each( function() {

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var selectee = $.data( this, "selectable-item" ),

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hit = false,

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offset = {};

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//prevent helper from being selected if appendTo: selectable

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if ( !selectee || selectee.element === that.element[ 0 ] ) {

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return;

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}

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offset.left = selectee.left + that.elementPos.left;

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offset.right = selectee.right + that.elementPos.left;

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offset.top = selectee.top + that.elementPos.top;

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offset.bottom = selectee.bottom + that.elementPos.top;

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if ( options.tolerance === "touch" ) {

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hit = ( !( offset.left > x2 || offset.right < x1 || offset.top > y2 ||

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offset.bottom < y1 ) );

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} else if ( options.tolerance === "fit" ) {

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hit = ( offset.left > x1 && offset.right < x2 && offset.top > y1 &&

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offset.bottom < y2 );

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}

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if ( hit ) {

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// SELECT

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if ( selectee.selected ) {

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that._removeClass( selectee.$element, "ui-selected" );

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selectee.selected = false;

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}

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if ( selectee.unselecting ) {

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that._removeClass( selectee.$element, "ui-unselecting" );

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selectee.unselecting = false;

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}

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if ( !selectee.selecting ) {

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that._addClass( selectee.$element, "ui-selecting" );

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selectee.selecting = true;

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// selectable SELECTING callback

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that._trigger( "selecting", event, {

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selecting: selectee.element

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} );

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}

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} else {

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// UNSELECT

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if ( selectee.selecting ) {

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if ( ( event.metaKey || event.ctrlKey ) && selectee.startselected ) {

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that._removeClass( selectee.$element, "ui-selecting" );

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selectee.selecting = false;

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that._addClass( selectee.$element, "ui-selected" );

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selectee.selected = true;

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} else {

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that._removeClass( selectee.$element, "ui-selecting" );

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selectee.selecting = false;

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if ( selectee.startselected ) {

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that._addClass( selectee.$element, "ui-unselecting" );

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selectee.unselecting = true;

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}

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// selectable UNSELECTING callback

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that._trigger( "unselecting", event, {

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unselecting: selectee.element

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} );

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}

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}

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if ( selectee.selected ) {

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if ( !event.metaKey && !event.ctrlKey && !selectee.startselected ) {

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that._removeClass( selectee.$element, "ui-selected" );

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selectee.selected = false;

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that._addClass( selectee.$element, "ui-unselecting" );

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selectee.unselecting = true;

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// selectable UNSELECTING callback

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that._trigger( "unselecting", event, {

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unselecting: selectee.element

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} );

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}

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}

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}

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} );

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return false;

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},

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_mouseStop: function( event ) {

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var that = this;

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this.dragged = false;

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$( ".ui-unselecting", this.element[ 0 ] ).each( function() {

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var selectee = $.data( this, "selectable-item" );

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that._removeClass( selectee.$element, "ui-unselecting" );

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selectee.unselecting = false;

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selectee.startselected = false;

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that._trigger( "unselected", event, {

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unselected: selectee.element

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} );

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} );

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$( ".ui-selecting", this.element[ 0 ] ).each( function() {

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var selectee = $.data( this, "selectable-item" );

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that._removeClass( selectee.$element, "ui-selecting" )

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._addClass( selectee.$element, "ui-selected" );

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selectee.selecting = false;

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selectee.selected = true;

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selectee.startselected = true;

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that._trigger( "selected", event, {

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selected: selectee.element

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} );

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} );

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this._trigger( "stop", event );

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this.helper.remove();

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return false;

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}

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} );

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} ) );

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