text: /**
   * @license Copyright (c) 2003-2016, CKSource - Frederico Knabben. All rights reserved.
   * For licensing, see LICENSE.md or http://ckeditor.com/license
   */
  
  ( function() {
  	CKEDITOR.plugins.add( 'enterkey', {
  		init: function( editor ) {
  			editor.addCommand( 'enter', {
  				modes: { wysiwyg: 1 },
  				editorFocus: false,
  				exec: function( editor ) {
  					enter( editor );
  				}
  			} );
  
  			editor.addCommand( 'shiftEnter', {
  				modes: { wysiwyg: 1 },
  				editorFocus: false,
  				exec: function( editor ) {
  					shiftEnter( editor );
  				}
  			} );
  
  			editor.setKeystroke( [
  				[ 13, 'enter' ],
  				[ CKEDITOR.SHIFT + 13, 'shiftEnter' ]
  			] );
  		}
  	} );
  
  	var whitespaces = CKEDITOR.dom.walker.whitespaces(),
  		bookmark = CKEDITOR.dom.walker.bookmark();
  
  	CKEDITOR.plugins.enterkey = {
  		enterBlock: function( editor, mode, range, forceMode ) {
  			// Get the range for the current selection.
  			range = range || getRange( editor );
  
  			// We may not have valid ranges to work on, like when inside a
  			// contenteditable=false element.
  			if ( !range )
  				return;
  
  			// When range is in nested editable, we have to replace range with this one,
  			// which have root property set to closest editable, to make auto paragraphing work. (#12162)
  			range = replaceRangeWithClosestEditableRoot( range );
  
  			var doc = range.document;
  
  			var atBlockStart = range.checkStartOfBlock(),
  				atBlockEnd = range.checkEndOfBlock(),
  				path = editor.elementPath( range.startContainer ),
  				block = path.block,
  
  				// Determine the block element to be used.
  				blockTag = ( mode == CKEDITOR.ENTER_DIV ? 'div' : 'p' ),
  
  				newBlock;
  
  			// Exit the list when we're inside an empty list item block. (#5376)
  			if ( atBlockStart && atBlockEnd ) {
  				// Exit the list when we're inside an empty list item block. (#5376)
  				if ( block && ( block.is( 'li' ) || block.getParent().is( 'li' ) ) ) {
  					// Make sure to point to the li when dealing with empty list item.
  					if ( !block.is( 'li' ) )
  						block = block.getParent();
  
  					var blockParent = block.getParent(),
  						blockGrandParent = blockParent.getParent(),
  
  						firstChild = !block.hasPrevious(),
  						lastChild = !block.hasNext(),
  
  						selection = editor.getSelection(),
  						bookmarks = selection.createBookmarks(),
  
  						orgDir = block.getDirection( 1 ),
  						className = block.getAttribute( 'class' ),
  						style = block.getAttribute( 'style' ),
  						dirLoose = blockGrandParent.getDirection( 1 ) != orgDir,
  
  						enterMode = editor.enterMode,
  						needsBlock = enterMode != CKEDITOR.ENTER_BR || dirLoose || style || className,
  
  						child;
  
  					if ( blockGrandParent.is( 'li' ) ) {
  
  						// If block is the first or the last child of the parent
  						// list, degrade it and move to the outer list:
  						// before the parent list if block is first child and after
  						// the parent list if block is the last child, respectively.
  						//
  						//  <ul>                         =>      <ul>
  						//      <li>                     =>          <li>
  						//          <ul>                 =>              <ul>
  						//              <li>x</li>       =>                  <li>x</li>
  						//              <li>^</li>       =>              </ul>
  						//          </ul>                =>          </li>
  						//      </li>                    =>          <li>^</li>
  						//  </ul>                        =>      </ul>
  						//
  						//                              AND
  						//
  						//  <ul>                         =>      <ul>
  						//      <li>                     =>          <li>^</li>
  						//          <ul>                 =>          <li>
  						//              <li>^</li>       =>              <ul>
  						//              <li>x</li>       =>                  <li>x</li>
  						//          </ul>                =>              </ul>
  						//      </li>                    =>          </li>
  						//  </ul>                        =>      </ul>
  
  						if ( firstChild || lastChild ) {
  
  							// If it's only child, we don't want to keep perent ul anymore.
  							if ( firstChild && lastChild ) {
  								blockParent.remove();
  							}
  
  							block[lastChild ? 'insertAfter' : 'insertBefore']( blockGrandParent );
  
  							// If the empty block is neither first nor last child
  							// then split the list and the block as an element
  							// of outer list.
  							//
  							//                              =>      <ul>
  							//                              =>          <li>
  							//  <ul>                        =>              <ul>
  							//      <li>                    =>                  <li>x</li>
  							//          <ul>                =>              </ul>
  							//              <li>x</li>      =>          </li>
  							//              <li>^</li>      =>          <li>^</li>
  							//              <li>y</li>      =>          <li>
  							//          </ul>               =>              <ul>
  							//      </li>                   =>                  <li>y</li>
  							//  </ul>                       =>              </ul>
  							//                              =>          </li>
  							//                              =>      </ul>
  
  						} else {
  							block.breakParent( blockGrandParent );
  						}
  					}
  
  					else if ( !needsBlock ) {
  						block.appendBogus( true );
  
  						// If block is the first or last child of the parent
  						// list, move all block's children out of the list:
  						// before the list if block is first child and after the list
  						// if block is the last child, respectively.
  						//
  						//  <ul>                       =>      <ul>
  						//      <li>x</li>             =>          <li>x</li>
  						//      <li>^</li>             =>      </ul>
  						//  </ul>                      =>      ^
  						//
  						//                            AND
  						//
  						//  <ul>                       =>      ^
  						//      <li>^</li>             =>      <ul>
  						//      <li>x</li>             =>          <li>x</li>
  						//  </ul>                      =>      </ul>
  
  						if ( firstChild || lastChild ) {
  							while ( ( child = block[ firstChild ? 'getFirst' : 'getLast' ]() ) )
  								child[ firstChild ? 'insertBefore' : 'insertAfter' ]( blockParent );
  						}
  
  						// If the empty block is neither first nor last child
  						// then split the list and put all the block contents
  						// between two lists.
  						//
  						//  <ul>                       =>      <ul>
  						//      <li>x</li>             =>          <li>x</li>
  						//      <li>^</li>             =>      </ul>
  						//      <li>y</li>             =>      ^
  						//  </ul>                      =>      <ul>
  						//                             =>          <li>y</li>
  						//                             =>      </ul>
  
  						else {
  							block.breakParent( blockParent );
  
  							while ( ( child = block.getLast() ) )
  								child.insertAfter( blockParent );
  						}
  
  						block.remove();
  					} else {
  						// Original path block is the list item, create new block for the list item content.
  						if ( path.block.is( 'li' ) ) {
  							// Use <div> block for ENTER_BR and ENTER_DIV.
  							newBlock = doc.createElement( mode == CKEDITOR.ENTER_P ? 'p' : 'div' );
  
  							if ( dirLoose )
  								newBlock.setAttribute( 'dir', orgDir );
  
  							style && newBlock.setAttribute( 'style', style );
  							className && newBlock.setAttribute( 'class', className );
  
  							// Move all the child nodes to the new block.
  							block.moveChildren( newBlock );
  						}
  						// The original path block is not a list item, just copy the block to out side of the list.
  						else {
  							newBlock = path.block;
  						}
  
  						// If block is the first or last child of the parent
  						// list, move it out of the list:
  						// before the list if block is first child and after the list
  						// if block is the last child, respectively.
  						//
  						//  <ul>                       =>      <ul>
  						//      <li>x</li>             =>          <li>x</li>
  						//      <li>^</li>             =>      </ul>
  						//  </ul>                      =>      <p>^</p>
  						//
  						//                            AND
  						//
  						//  <ul>                       =>      <p>^</p>
  						//      <li>^</li>             =>      <ul>
  						//      <li>x</li>             =>          <li>x</li>
  						//  </ul>                      =>      </ul>
  
  						if ( firstChild || lastChild )
  							newBlock[ firstChild ? 'insertBefore' : 'insertAfter' ]( blockParent );
  
  						// If the empty block is neither first nor last child
  						// then split the list and put the new block between
  						// two lists.
  						//
  						//                             =>       <ul>
  						//     <ul>                    =>           <li>x</li>
  						//         <li>x</li>          =>       </ul>
  						//         <li>^</li>          =>       <p>^</p>
  						//         <li>y</li>          =>       <ul>
  						//     </ul>                   =>           <li>y</li>
  						//                             =>       </ul>
  
  						else {
  							block.breakParent( blockParent );
  							newBlock.insertAfter( blockParent );
  						}
  
  						block.remove();
  					}
  
  					selection.selectBookmarks( bookmarks );
  
  					return;
  				}
  
  				if ( block && block.getParent().is( 'blockquote' ) ) {
  					block.breakParent( block.getParent() );
  
  					// If we were at the start of <blockquote>, there will be an empty element before it now.
  					if ( !block.getPrevious().getFirst( CKEDITOR.dom.walker.invisible( 1 ) ) )
  						block.getPrevious().remove();
  
  					// If we were at the end of <blockquote>, there will be an empty element after it now.
  					if ( !block.getNext().getFirst( CKEDITOR.dom.walker.invisible( 1 ) ) )
  						block.getNext().remove();
  
  					range.moveToElementEditStart( block );
  					range.select();
  					return;
  				}
  			}
  			// Don't split <pre> if we're in the middle of it, act as shift enter key.
  			else if ( block && block.is( 'pre' ) ) {
  				if ( !atBlockEnd ) {
  					enterBr( editor, mode, range, forceMode );
  					return;
  				}
  			}
  
  			// Split the range.
  			var splitInfo = range.splitBlock( blockTag );
  
  			if ( !splitInfo )
  				return;
  
  			// Get the current blocks.
  			var previousBlock = splitInfo.previousBlock,
  				nextBlock = splitInfo.nextBlock;
  
  			var isStartOfBlock = splitInfo.wasStartOfBlock,
  				isEndOfBlock = splitInfo.wasEndOfBlock;
  
  			var node;
  
  			// If this is a block under a list item, split it as well. (#1647)
  			if ( nextBlock ) {
  				node = nextBlock.getParent();
  				if ( node.is( 'li' ) ) {
  					nextBlock.breakParent( node );
  					nextBlock.move( nextBlock.getNext(), 1 );
  				}
  			} else if ( previousBlock && ( node = previousBlock.getParent() ) && node.is( 'li' ) ) {
  				previousBlock.breakParent( node );
  				node = previousBlock.getNext();
  				range.moveToElementEditStart( node );
  				previousBlock.move( previousBlock.getPrevious() );
  			}
  
  			// If we have both the previous and next blocks, it means that the
  			// boundaries were on separated blocks, or none of them where on the
  			// block limits (start/end).
  			if ( !isStartOfBlock && !isEndOfBlock ) {
  				// If the next block is an <li> with another list tree as the first
  				// child, we'll need to append a filler (<br>/NBSP) or the list item
  				// wouldn't be editable. (#1420)
  				if ( nextBlock.is( 'li' ) ) {
  					var walkerRange = range.clone();
  					walkerRange.selectNodeContents( nextBlock );
  					var walker = new CKEDITOR.dom.walker( walkerRange );
  					walker.evaluator = function( node ) {
  						return !( bookmark( node ) || whitespaces( node ) || node.type == CKEDITOR.NODE_ELEMENT && node.getName() in CKEDITOR.dtd.$inline && !( node.getName() in CKEDITOR.dtd.$empty ) );
  					};
  
  					node = walker.next();
  					if ( node && node.type == CKEDITOR.NODE_ELEMENT && node.is( 'ul', 'ol' ) )
  						( CKEDITOR.env.needsBrFiller ? doc.createElement( 'br' ) : doc.createText( '\xa0' ) ).insertBefore( node );
  				}
  
  				// Move the selection to the end block.
  				if ( nextBlock )
  					range.moveToElementEditStart( nextBlock );
  			} else {
  				var newBlockDir;
  
  				if ( previousBlock ) {
  					// Do not enter this block if it's a header tag, or we are in
  					// a Shift+Enter (#77). Create a new block element instead
  					// (later in the code).
  					if ( previousBlock.is( 'li' ) || !( headerTagRegex.test( previousBlock.getName() ) || previousBlock.is( 'pre' ) ) ) {
  						// Otherwise, duplicate the previous block.
  						newBlock = previousBlock.clone();
  					}
  				} else if ( nextBlock ) {
  					newBlock = nextBlock.clone();
  				}
  
  				if ( !newBlock ) {
  					// We have already created a new list item. (#6849)
  					if ( node && node.is( 'li' ) )
  						newBlock = node;
  					else {
  						newBlock = doc.createElement( blockTag );
  						if ( previousBlock && ( newBlockDir = previousBlock.getDirection() ) )
  							newBlock.setAttribute( 'dir', newBlockDir );
  					}
  				}
  				// Force the enter block unless we're talking of a list item.
  				else if ( forceMode && !newBlock.is( 'li' ) ) {
  					newBlock.renameNode( blockTag );
  				}
  
  				// Recreate the inline elements tree, which was available
  				// before hitting enter, so the same styles will be available in
  				// the new block.
  				var elementPath = splitInfo.elementPath;
  				if ( elementPath ) {
  					for ( var i = 0, len = elementPath.elements.length; i < len; i++ ) {
  						var element = elementPath.elements[ i ];
  
  						if ( element.equals( elementPath.block ) || element.equals( elementPath.blockLimit ) )
  							break;
  
  						if ( CKEDITOR.dtd.$removeEmpty[ element.getName() ] ) {
  							element = element.clone();
  							newBlock.moveChildren( element );
  							newBlock.append( element );
  						}
  					}
  				}
  
  				newBlock.appendBogus();
  
  				if ( !newBlock.getParent() )
  					range.insertNode( newBlock );
  
  				// list item start number should not be duplicated (#7330), but we need
  				// to remove the attribute after it's onto the DOM tree because of old IEs (#7581).
  				newBlock.is( 'li' ) && newBlock.removeAttribute( 'value' );
  
  				// This is tricky, but to make the new block visible correctly
  				// we must select it.
  				// The previousBlock check has been included because it may be
  				// empty if we have fixed a block-less space (like ENTER into an
  				// empty table cell).
  				if ( CKEDITOR.env.ie && isStartOfBlock && ( !isEndOfBlock || !previousBlock.getChildCount() ) ) {
  					// Move the selection to the new block.
  					range.moveToElementEditStart( isEndOfBlock ? previousBlock : newBlock );
  					range.select();
  				}
  
  				// Move the selection to the new block.
  				range.moveToElementEditStart( isStartOfBlock && !isEndOfBlock ? nextBlock : newBlock );
  			}
  
  			range.select();
  			range.scrollIntoView();
  		},
  
  		enterBr: function( editor, mode, range, forceMode ) {
  			// Get the range for the current selection.
  			range = range || getRange( editor );
  
  			// We may not have valid ranges to work on, like when inside a
  			// contenteditable=false element.
  			if ( !range )
  				return;
  
  			var doc = range.document;
  
  			var isEndOfBlock = range.checkEndOfBlock();
  
  			var elementPath = new CKEDITOR.dom.elementPath( editor.getSelection().getStartElement() );
  
  			var startBlock = elementPath.block,
  				startBlockTag = startBlock && elementPath.block.getName();
  
  			if ( !forceMode && startBlockTag == 'li' ) {
  				enterBlock( editor, mode, range, forceMode );
  				return;
  			}
  
  			// If we are at the end of a header block.
  			if ( !forceMode && isEndOfBlock && headerTagRegex.test( startBlockTag ) ) {
  				var newBlock, newBlockDir;
  
  				if ( ( newBlockDir = startBlock.getDirection() ) ) {
  					newBlock = doc.createElement( 'div' );
  					newBlock.setAttribute( 'dir', newBlockDir );
  					newBlock.insertAfter( startBlock );
  					range.setStart( newBlock, 0 );
  				} else {
  					// Insert a <br> after the current paragraph.
  					doc.createElement( 'br' ).insertAfter( startBlock );
  
  					// A text node is required by Gecko only to make the cursor blink.
  					if ( CKEDITOR.env.gecko )
  						doc.createText( '' ).insertAfter( startBlock );
  
  					// IE has different behaviors regarding position.
  					range.setStartAt( startBlock.getNext(), CKEDITOR.env.ie ? CKEDITOR.POSITION_BEFORE_START : CKEDITOR.POSITION_AFTER_START );
  				}
  			} else {
  				var lineBreak;
  
  				// IE<8 prefers text node as line-break inside of <pre> (#4711).
  				if ( startBlockTag == 'pre' && CKEDITOR.env.ie && CKEDITOR.env.version < 8 )
  					lineBreak = doc.createText( '\r' );
  				else
  					lineBreak = doc.createElement( 'br' );
  
  				range.deleteContents();
  				range.insertNode( lineBreak );
  
  				// Old IEs have different behavior regarding position.
  				if ( !CKEDITOR.env.needsBrFiller )
  					range.setStartAt( lineBreak, CKEDITOR.POSITION_AFTER_END );
  				else {
  					// A text node is required by Gecko only to make the cursor blink.
  					// We need some text inside of it, so the bogus <br> is properly
  					// created.
  					doc.createText( '\ufeff' ).insertAfter( lineBreak );
  
  					// If we are at the end of a block, we must be sure the bogus node is available in that block.
  					if ( isEndOfBlock ) {
  						// In most situations we've got an elementPath.block (e.g. <p>), but in a
  						// blockless editor or when autoP is false that needs to be a block limit.
  						( startBlock || elementPath.blockLimit ).appendBogus();
  					}
  
  					// Now we can remove the text node contents, so the caret doesn't
  					// stop on it.
  					lineBreak.getNext().$.nodeValue = '';
  
  					range.setStartAt( lineBreak.getNext(), CKEDITOR.POSITION_AFTER_START );
  
  				}
  			}
  
  			// This collapse guarantees the cursor will be blinking.
  			range.collapse( true );
  
  			range.select();
  			range.scrollIntoView();
  		}
  	};
  
  	var plugin = CKEDITOR.plugins.enterkey,
  		enterBr = plugin.enterBr,
  		enterBlock = plugin.enterBlock,
  		headerTagRegex = /^h[1-6]$/;
  
  	function shiftEnter( editor ) {
  		// On SHIFT+ENTER:
  		// 1. We want to enforce the mode to be respected, instead
  		// of cloning the current block. (#77)
  		return enter( editor, editor.activeShiftEnterMode, 1 );
  	}
  
  	function enter( editor, mode, forceMode ) {
  		forceMode = editor.config.forceEnterMode || forceMode;
  
  		// Only effective within document.
  		if ( editor.mode != 'wysiwyg' )
  			return;
  
  		if ( !mode )
  			mode = editor.activeEnterMode;
  
  		// TODO this should be handled by setting editor.activeEnterMode on selection change.
  		// Check path block specialities:
  		// 1. Cannot be a un-splittable element, e.g. table caption;
  		var path = editor.elementPath();
  		if ( !path.isContextFor( 'p' ) ) {
  			mode = CKEDITOR.ENTER_BR;
  			forceMode = 1;
  		}
  
  		editor.fire( 'saveSnapshot' ); // Save undo step.
  
  		if ( mode == CKEDITOR.ENTER_BR )
  			enterBr( editor, mode, null, forceMode );
  		else
  			enterBlock( editor, mode, null, forceMode );
  
  		editor.fire( 'saveSnapshot' );
  	}
  
  	function getRange( editor ) {
  		// Get the selection ranges.
  		var ranges = editor.getSelection().getRanges( true );
  
  		// Delete the contents of all ranges except the first one.
  		for ( var i = ranges.length - 1; i > 0; i-- ) {
  			ranges[ i ].deleteContents();
  		}
  
  		// Return the first range.
  		return ranges[ 0 ];
  	}
  
  	function replaceRangeWithClosestEditableRoot( range ) {
  		var closestEditable = range.startContainer.getAscendant( function( node ) {
  			return node.type == CKEDITOR.NODE_ELEMENT && node.getAttribute( 'contenteditable' ) == 'true';
  		}, true );
  
  		if ( range.root.equals( closestEditable ) ) {
  			return range;
  		} else {
  			var newRange = new CKEDITOR.dom.range( closestEditable );
  
  			newRange.moveToRange( range );
  			return newRange;
  		}
  	}
  } )();
  