[239] | 1 | /*
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| 2 | Copyright (c) 2003-2011, CKSource - Frederico Knabben. All rights reserved.
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| 3 | For licensing, see LICENSE.html or http://ckeditor.com/license
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| 4 | */
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| 5 |
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| 6 | (function()
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| 7 | {
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| 8 | var meta =
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| 9 | {
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| 10 | editorFocus : false,
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| 11 | modes : { wysiwyg:1, source:1 }
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| 12 | };
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| 13 |
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| 14 | var blurCommand =
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| 15 | {
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| 16 | exec : function( editor )
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| 17 | {
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| 18 | editor.container.focusNext( true, editor.tabIndex );
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| 19 | }
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| 20 | };
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| 21 |
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| 22 | var blurBackCommand =
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| 23 | {
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| 24 | exec : function( editor )
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| 25 | {
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| 26 | editor.container.focusPrevious( true, editor.tabIndex );
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| 27 | }
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| 28 | };
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| 29 |
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| 30 | function selectNextCellCommand( backward )
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| 31 | {
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| 32 | return {
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| 33 | editorFocus : false,
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| 34 | canUndo : false,
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| 35 | modes : { wysiwyg : 1 },
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| 36 | exec : function( editor )
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| 37 | {
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| 38 | if ( editor.focusManager.hasFocus )
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| 39 | {
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| 40 | var sel = editor.getSelection(),
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| 41 | ancestor = sel.getCommonAncestor(),
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| 42 | cell;
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| 43 |
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| 44 | if ( ( cell = ( ancestor.getAscendant( 'td', true ) || ancestor.getAscendant( 'th', true ) ) ) )
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| 45 | {
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| 46 | var resultRange = new CKEDITOR.dom.range( editor.document ),
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| 47 | next = CKEDITOR.tools.tryThese( function()
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| 48 | {
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| 49 | var row = cell.getParent(),
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| 50 | next = row.$.cells[ cell.$.cellIndex + ( backward ? - 1 : 1 ) ];
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| 51 |
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| 52 | // Invalid any empty value.
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| 53 | next.parentNode.parentNode;
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| 54 | return next;
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| 55 | },
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| 56 | function()
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| 57 | {
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| 58 | var row = cell.getParent(),
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| 59 | table = row.getAscendant( 'table' ),
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| 60 | nextRow = table.$.rows[ row.$.rowIndex + ( backward ? - 1 : 1 ) ];
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| 61 |
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| 62 | return nextRow.cells[ backward? nextRow.cells.length -1 : 0 ];
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| 63 | });
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| 64 |
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| 65 | // Clone one more row at the end of table and select the first newly established cell.
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| 66 | if ( ! ( next || backward ) )
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| 67 | {
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| 68 | var table = cell.getAscendant( 'table' ).$,
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| 69 | cells = cell.getParent().$.cells;
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| 70 |
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| 71 | var newRow = new CKEDITOR.dom.element( table.insertRow( -1 ), editor.document );
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| 72 |
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| 73 | for ( var i = 0, count = cells.length ; i < count; i++ )
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| 74 | {
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| 75 | var newCell = newRow.append( new CKEDITOR.dom.element(
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| 76 | cells[ i ], editor.document ).clone( false, false ) );
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| 77 | !CKEDITOR.env.ie && newCell.appendBogus();
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| 78 | }
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| 79 |
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| 80 | resultRange.moveToElementEditStart( newRow );
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| 81 | }
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| 82 | else if ( next )
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| 83 | {
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| 84 | next = new CKEDITOR.dom.element( next );
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| 85 | resultRange.moveToElementEditStart( next );
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| 86 | // Avoid selecting empty block makes the cursor blind.
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| 87 | if ( !( resultRange.checkStartOfBlock() && resultRange.checkEndOfBlock() ) )
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| 88 | resultRange.selectNodeContents( next );
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| 89 | }
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| 90 | else
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| 91 | return true;
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| 92 |
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| 93 | resultRange.select( true );
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| 94 | return true;
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| 95 | }
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| 96 | }
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| 97 | return false;
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| 98 | }
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| 99 | };
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| 100 | }
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| 101 |
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| 102 | CKEDITOR.plugins.add( 'tab',
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| 103 | {
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| 104 | requires : [ 'keystrokes' ],
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| 105 |
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| 106 | init : function( editor )
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| 107 | {
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| 108 | var tabTools = editor.config.enableTabKeyTools !== false,
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| 109 | tabSpaces = editor.config.tabSpaces || 0,
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| 110 | tabText = '';
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| 111 |
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| 112 | while ( tabSpaces-- )
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| 113 | tabText += '\xa0';
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| 114 |
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| 115 | if ( tabText )
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| 116 | {
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| 117 | editor.on( 'key', function( ev )
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| 118 | {
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| 119 | if ( ev.data.keyCode == 9 ) // TAB
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| 120 | {
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| 121 | editor.insertHtml( tabText );
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| 122 | ev.cancel();
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| 123 | }
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| 124 | });
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| 125 | }
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| 126 |
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| 127 | if ( tabTools )
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| 128 | {
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| 129 | editor.on( 'key', function( ev )
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| 130 | {
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| 131 | if ( ev.data.keyCode == 9 && editor.execCommand( 'selectNextCell' ) || // TAB
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| 132 | ev.data.keyCode == ( CKEDITOR.SHIFT + 9 ) && editor.execCommand( 'selectPreviousCell' ) ) // SHIFT+TAB
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| 133 | ev.cancel();
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| 134 | });
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| 135 | }
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| 136 |
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| 137 | if ( CKEDITOR.env.webkit || CKEDITOR.env.gecko )
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| 138 | {
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| 139 | editor.on( 'key', function( ev )
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| 140 | {
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| 141 | var keyCode = ev.data.keyCode;
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| 142 |
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| 143 | if ( keyCode == 9 && !tabText ) // TAB
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| 144 | {
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| 145 | ev.cancel();
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| 146 | editor.execCommand( 'blur' );
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| 147 | }
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| 148 |
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| 149 | if ( keyCode == ( CKEDITOR.SHIFT + 9 ) ) // SHIFT+TAB
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| 150 | {
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| 151 | editor.execCommand( 'blurBack' );
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| 152 | ev.cancel();
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| 153 | }
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| 154 | });
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| 155 | }
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| 156 |
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| 157 | editor.addCommand( 'blur', CKEDITOR.tools.extend( blurCommand, meta ) );
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| 158 | editor.addCommand( 'blurBack', CKEDITOR.tools.extend( blurBackCommand, meta ) );
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| 159 | editor.addCommand( 'selectNextCell', selectNextCellCommand() );
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| 160 | editor.addCommand( 'selectPreviousCell', selectNextCellCommand( true ) );
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| 161 | }
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| 162 | });
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| 163 | })();
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| 164 |
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| 165 | /**
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| 166 | * Moves the UI focus to the element following this element in the tabindex
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| 167 | * order.
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| 168 | * @example
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| 169 | * var element = CKEDITOR.document.getById( 'example' );
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| 170 | * element.focusNext();
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| 171 | */
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| 172 | CKEDITOR.dom.element.prototype.focusNext = function( ignoreChildren, indexToUse )
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| 173 | {
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| 174 | var $ = this.$,
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| 175 | curTabIndex = ( indexToUse === undefined ? this.getTabIndex() : indexToUse ),
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| 176 | passedCurrent, enteredCurrent,
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| 177 | elected, electedTabIndex,
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| 178 | element, elementTabIndex;
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| 179 |
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| 180 | if ( curTabIndex <= 0 )
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| 181 | {
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| 182 | // If this element has tabindex <= 0 then we must simply look for any
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| 183 | // element following it containing tabindex=0.
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| 184 |
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| 185 | element = this.getNextSourceNode( ignoreChildren, CKEDITOR.NODE_ELEMENT );
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| 186 |
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| 187 | while ( element )
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| 188 | {
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| 189 | if ( element.isVisible() && element.getTabIndex() === 0 )
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| 190 | {
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| 191 | elected = element;
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| 192 | break;
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| 193 | }
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| 194 |
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| 195 | element = element.getNextSourceNode( false, CKEDITOR.NODE_ELEMENT );
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| 196 | }
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| 197 | }
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| 198 | else
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| 199 | {
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| 200 | // If this element has tabindex > 0 then we must look for:
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| 201 | // 1. An element following this element with the same tabindex.
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| 202 | // 2. The first element in source other with the lowest tabindex
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| 203 | // that is higher than this element tabindex.
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| 204 | // 3. The first element with tabindex=0.
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| 205 |
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| 206 | element = this.getDocument().getBody().getFirst();
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| 207 |
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| 208 | while ( ( element = element.getNextSourceNode( false, CKEDITOR.NODE_ELEMENT ) ) )
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| 209 | {
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| 210 | if ( !passedCurrent )
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| 211 | {
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| 212 | if ( !enteredCurrent && element.equals( this ) )
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| 213 | {
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| 214 | enteredCurrent = true;
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| 215 |
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| 216 | // Ignore this element, if required.
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| 217 | if ( ignoreChildren )
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| 218 | {
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| 219 | if ( !( element = element.getNextSourceNode( true, CKEDITOR.NODE_ELEMENT ) ) )
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| 220 | break;
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| 221 | passedCurrent = 1;
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| 222 | }
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| 223 | }
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| 224 | else if ( enteredCurrent && !this.contains( element ) )
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| 225 | passedCurrent = 1;
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| 226 | }
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| 227 |
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| 228 | if ( !element.isVisible() || ( elementTabIndex = element.getTabIndex() ) < 0 )
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| 229 | continue;
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| 230 |
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| 231 | if ( passedCurrent && elementTabIndex == curTabIndex )
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| 232 | {
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| 233 | elected = element;
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| 234 | break;
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| 235 | }
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| 236 |
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| 237 | if ( elementTabIndex > curTabIndex && ( !elected || !electedTabIndex || elementTabIndex < electedTabIndex ) )
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| 238 | {
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| 239 | elected = element;
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| 240 | electedTabIndex = elementTabIndex;
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| 241 | }
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| 242 | else if ( !elected && elementTabIndex === 0 )
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| 243 | {
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| 244 | elected = element;
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| 245 | electedTabIndex = elementTabIndex;
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| 246 | }
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| 247 | }
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| 248 | }
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| 249 |
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| 250 | if ( elected )
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| 251 | elected.focus();
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| 252 | };
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| 253 |
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| 254 | /**
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| 255 | * Moves the UI focus to the element before this element in the tabindex order.
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| 256 | * @example
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| 257 | * var element = CKEDITOR.document.getById( 'example' );
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| 258 | * element.focusPrevious();
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| 259 | */
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| 260 | CKEDITOR.dom.element.prototype.focusPrevious = function( ignoreChildren, indexToUse )
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| 261 | {
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| 262 | var $ = this.$,
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| 263 | curTabIndex = ( indexToUse === undefined ? this.getTabIndex() : indexToUse ),
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| 264 | passedCurrent, enteredCurrent,
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| 265 | elected,
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| 266 | electedTabIndex = 0,
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| 267 | elementTabIndex;
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| 268 |
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| 269 | var element = this.getDocument().getBody().getLast();
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| 270 |
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| 271 | while ( ( element = element.getPreviousSourceNode( false, CKEDITOR.NODE_ELEMENT ) ) )
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| 272 | {
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| 273 | if ( !passedCurrent )
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| 274 | {
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| 275 | if ( !enteredCurrent && element.equals( this ) )
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| 276 | {
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| 277 | enteredCurrent = true;
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| 278 |
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| 279 | // Ignore this element, if required.
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| 280 | if ( ignoreChildren )
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| 281 | {
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| 282 | if ( !( element = element.getPreviousSourceNode( true, CKEDITOR.NODE_ELEMENT ) ) )
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| 283 | break;
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| 284 | passedCurrent = 1;
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| 285 | }
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| 286 | }
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| 287 | else if ( enteredCurrent && !this.contains( element ) )
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| 288 | passedCurrent = 1;
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| 289 | }
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| 290 |
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| 291 | if ( !element.isVisible() || ( elementTabIndex = element.getTabIndex() ) < 0 )
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| 292 | continue;
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| 293 |
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| 294 | if ( curTabIndex <= 0 )
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| 295 | {
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| 296 | // If this element has tabindex <= 0 then we must look for:
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| 297 | // 1. An element before this one containing tabindex=0.
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| 298 | // 2. The last element with the highest tabindex.
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| 299 |
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| 300 | if ( passedCurrent && elementTabIndex === 0 )
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| 301 | {
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| 302 | elected = element;
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| 303 | break;
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| 304 | }
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| 305 |
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| 306 | if ( elementTabIndex > electedTabIndex )
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| 307 | {
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| 308 | elected = element;
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| 309 | electedTabIndex = elementTabIndex;
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| 310 | }
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| 311 | }
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| 312 | else
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| 313 | {
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| 314 | // If this element has tabindex > 0 we must look for:
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| 315 | // 1. An element preceeding this one, with the same tabindex.
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| 316 | // 2. The last element in source other with the highest tabindex
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| 317 | // that is lower than this element tabindex.
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| 318 |
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| 319 | if ( passedCurrent && elementTabIndex == curTabIndex )
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| 320 | {
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| 321 | elected = element;
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| 322 | break;
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| 323 | }
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| 324 |
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| 325 | if ( elementTabIndex < curTabIndex && ( !elected || elementTabIndex > electedTabIndex ) )
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| 326 | {
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| 327 | elected = element;
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| 328 | electedTabIndex = elementTabIndex;
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| 329 | }
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| 330 | }
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| 331 | }
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| 332 |
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| 333 | if ( elected )
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| 334 | elected.focus();
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| 335 | };
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| 336 |
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| 337 | /**
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| 338 | * Intructs the editor to add a number of spaces (&nbsp;) to the text when
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| 339 | * hitting the TAB key. If set to zero, the TAB key will be used to move the
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| 340 | * cursor focus to the next element in the page, out of the editor focus.
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| 341 | * @name CKEDITOR.config.tabSpaces
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| 342 | * @type Number
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| 343 | * @default 0
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| 344 | * @example
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| 345 | * config.tabSpaces = 4;
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| 346 | */
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| 347 |
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| 348 | /**
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| 349 | * Allow context-sensitive tab key behaviors, including the following scenarios:
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| 350 | * <h5>When selection is anchored inside <b>table cells</b>:</h5>
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| 351 | * <ul>
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| 352 | * <li>If TAB is pressed, select the contents of the "next" cell. If in the last cell in the table, add a new row to it and focus its first cell.</li>
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| 353 | * <li>If SHIFT+TAB is pressed, select the contents of the "previous" cell. Do nothing when it's in the first cell.</li>
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| 354 | * </ul>
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| 355 | * @name CKEDITOR.config.enableTabKeyTools
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| 356 | * @type Boolean
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| 357 | * @default true
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| 358 | * @example
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| 359 | * config.enableTabKeyTools = false;
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| 360 | */
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| 361 |
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| 362 | // If the TAB key is not supposed to be enabled for navigation, the following
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| 363 | // settings could be used alternatively:
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| 364 | // config.keystrokes.push(
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| 365 | // [ CKEDITOR.ALT + 38 /*Arrow Up*/, 'selectPreviousCell' ],
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| 366 | // [ CKEDITOR.ALT + 40 /*Arrow Down*/, 'selectNextCell' ]
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| 367 | // );
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