/*! tablesorter Editable Content widget - updated 10/26/2014 (v2.18.0)
 * Requires tablesorter v2.8+ and jQuery 1.7+
 * by Rob Garrison
 */
/*jshint browser:true, jquery:true, unused:false */
/*global jQuery: false */
;( function( $ ){
	'use strict';

var tse = $.tablesorter.editable = {

	editComplete: function( c, wo, $cell, refocus ) {
		$cell
			.removeClass( 'tseditable-last-edited-cell' )
			.trigger( wo.editable_editComplete, [ c ] );
		// restore focus last cell after updating
		if ( refocus ) {
			setTimeout( function() {
				$cell.focus();
			}, 50 );
		}
	},

	selectAll: function( cell ) {
		setTimeout( function() {
			// select all text in contenteditable
			// see http://stackoverflow.com/a/6150060/145346
			var sel, range = document.createRange();
			range.selectNodeContents( cell );
			sel = window.getSelection();
			sel.removeAllRanges();
			sel.addRange( range );
		}, 100 );
	},

	update: function( c, wo ) {
		var indx, tmp, $t,
			colIndex = [],
			cols = [];
		if ( !wo.editable_columnsArray && $.type( wo.editable_columns ) === 'string' && wo.editable_columns.indexOf( '-' ) >= 0 ) {
			// editable_columns can contain a range string ( i.e. '2-4' )
			tmp = wo.editable_columns.split( /\s*-\s*/ );
			indx = parseInt( tmp[ 0 ], 10 ) || 0;
			tmp = parseInt( tmp[ 1 ], 10 ) || ( c.columns - 1 );
			if ( tmp > c.columns ) {
				tmp = c.columns - 1;
			}
			for ( ; indx <= tmp; indx++ ) {
				colIndex.push( indx );
				cols.push( 'td:nth-child(' + ( indx + 1 ) + ')' );
			}
		} else if ( $.isArray( wo.editable_columns ) ) {
			$.each( wo.editable_columnsArray || wo.editable_columns, function( i, col ) {
				if ( col < c.columns ) {
					colIndex.push( col );
					cols.push( 'td:nth-child(' + ( col + 1 ) + ')' );
				}
			});
		}
		if ( !wo.editable_columnsArray ) {
			wo.editable_columnsArray = colIndex;
			wo.editable_columnsArray.sort(function(a,b){ return a - b; });
		}
		tmp = $( '<div>' ).wrapInner( wo.editable_wrapContent ).children().length || $.isFunction( wo.editable_wrapContent );
		// IE does not allow making TR/TH/TD cells directly editable ( issue #404 )
		// so add a div or span inside ( it's faster than using wrapInner() )
		c.$tbodies.find( cols.join( ',' ) ).not( '.' + wo.editable_noEdit ).each( function() {
			// test for children, if they exist, then make the children editable
			$t = $( this );

			if ( tmp && $t.children().length === 0 ) {
				$t.wrapInner( wo.editable_wrapContent );
			}
			if ( $t.children().length ) {
				// make all children content editable
				$t.children().not( '.' + wo.editable_noEdit ).each( function() {
					var $this = $( this );
					if ( wo.editable_trimContent ) {
						$this.text( function( i, txt ) {
							return $.trim( txt );
						});
					}
					$this.prop( 'contenteditable', true );
				});
			} else {
				if ( wo.editable_trimContent ) {
					$t.text( function( i, txt ) {
						return $.trim( txt );
					});
				}
				$t.prop( 'contenteditable', true );
			}
		});
	},

	bindEvents: function( c, wo ) {
		c.$table
			.off( 'updateComplete pagerComplete '.split( ' ' ).join( '.tseditable' ) )
			.on( 'updateComplete pagerComplete '.split( ' ' ).join( '.tseditable' ), function() {
				tse.update( c, c.widgetOptions );
			});

		c.$tbodies
			.off( 'mouseleave focus blur focusout keydown '.split( ' ' ).join( '.tseditable ' ) )
			.on( 'mouseleave.tseditable', function() {
				if ( c.$table.data( 'contentFocused' ) ) {
					// change to 'true' instead of element to allow focusout to process
					c.$table.data( 'contentFocused', true );
					$( ':focus' ).trigger( 'focusout' );
				}
			})
			.on( 'focus.tseditable', '[contenteditable]', function( e ) {
				clearTimeout( $( this ).data( 'timer' ) );
				c.$table.data( 'contentFocused', e.target );
				var $this = $( this ),
					selAll = wo.editable_selectAll,
					column = $this.closest( 'td' ).index(),
					txt = $.trim( $this.text() );
				if ( wo.editable_enterToAccept ) {
					// prevent enter from adding into the content
					$this.on( 'keydown.tseditable', function( e ){
						if ( e.which === 13 ) {
							e.preventDefault();
						}
					});
				}
				$this.data({ before : txt, original: txt });

				if ( typeof wo.editable_focused === 'function' ) {
					wo.editable_focused( txt, column, $this );
				}

				if ( selAll ) {
					if ( typeof selAll === 'function' ) {
						if ( selAll( txt, column, $this ) ) {
							tse.selectAll( $this[0] );
						}
					} else {
						tse.selectAll( $this[0] );
					}
				}
			})
			.on( 'blur focusout keydown '.split( ' ' ).join( '.tseditable ' ), '[contenteditable]', function( e ) {
				if ( !c.$table.data( 'contentFocused' ) ) { return; }
				var t, validate,
					valid = false,
					$this = $( e.target ),
					txt = $.trim( $this.text() ),
					column = $this.closest( 'td' ).index();
				if ( e.which === 27 ) {
					// user cancelled
					$this.html( $.trim( $this.data( 'original' ) ) ).trigger( 'blur.tseditable' );
					c.$table.data( 'contentFocused', false );
					return false;
				}
				// accept on enter ( if set ), alt-enter ( always ) or if autoAccept is set and element is blurred or unfocused
				t = e.which === 13 && ( wo.editable_enterToAccept || e.altKey ) || wo.editable_autoAccept && e.type !== 'keydown';
				// change if new or user hits enter ( if option set )
				if ( t && $this.data( 'before' ) !== txt ) {

					validate = wo.editable_validate;
					valid = txt;

					if ( typeof( validate ) === 'function' ) {
						valid = validate( txt, $this.data( 'original' ), column, $this );
					} else if ( typeof ( validate = $.tablesorter.getColumnData( c.table, validate, column ) ) === 'function' ) {
						valid = validate( txt, $this.data( 'original' ), column, $this );
					}

					if ( t && valid !== false ) {
						c.$table.find( '.tseditable-last-edited-cell' ).removeClass( 'tseditable-last-edited-cell' );
						$this
							.addClass( 'tseditable-last-edited-cell' )
							.html( $.trim( valid ) )
							.data( 'before', valid )
							.data( 'original', valid )
							.trigger( 'change' );
						c.$table.trigger( 'updateCell', [ $this.closest( 'td' ), false, function() {
							if ( wo.editable_autoResort ) {
								setTimeout( function() {
									c.$table.trigger( 'sorton', [ c.sortList, function() {
										tse.editComplete( c, wo, c.$table.find( '.tseditable-last-edited-cell' ), true );
									}, true ] );
								}, 10 );
							} else {
								tse.editComplete( c, wo, c.$table.find( '.tseditable-last-edited-cell' ) );
							}
						} ] );
						return false;
					}
				} else if ( !valid && e.type !== 'keydown' ) {
					clearTimeout( $this.data( 'timer' ) );
					$this.data( 'timer', setTimeout( function() {
						if ( $.isFunction( wo.editable_blur ) ) {
							wo.editable_blur( $.trim( $this.text() ), column, $this );
						}
					}, 100 ) );
					// restore original content on blur
					$this.html( $.trim( $this.data( 'original' ) ) );
				}
			});
	}

};

	$.tablesorter.addWidget({
		id: 'editable',
		options : {
			editable_columns       : [],
			editable_enterToAccept : true,
			editable_autoAccept    : true,
			editable_autoResort    : false,
			editable_wrapContent   : '<div>', // wrap the cell content... makes this widget work in IE, and with autocomplete
			editable_trimContent   : true,    // trim content inside of contenteditable ( remove tabs & carriage returns )
			editable_validate      : null,    // function( text, originalText ){ return text; }
			editable_focused       : null,    // function( text, columnIndex, $element ) {}
			editable_blur          : null,    // function( text, columnIndex, $element ) { }
			editable_selectAll     : false,   // true/false or function( text, columnIndex, $element ) { return true; }
			editable_noEdit        : 'no-edit',
			editable_editComplete  : 'editComplete'
		},
		init: function( table, thisWidget, c, wo ){
			if ( !wo.editable_columns.length ) { return; }
			tse.update( c, wo );
			tse.bindEvents( c, wo );
		}
	});

})( jQuery );