text: ( function( tinymce ) {
  	tinymce.ui.Factory.add( 'WPLinkPreview', tinymce.ui.Control.extend( {
  		url: '#',
  		renderHtml: function() {
  			return (
  				'<div id="' + this._id + '" class="wp-link-preview">' +
  					'<a href="' + this.url + '" target="_blank" rel="noopener" tabindex="-1">' + this.url + '</a>' +
  				'</div>'
  			);
  		},
  		setURL: function( url ) {
  			var index, lastIndex;
  
  			if ( this.url !== url ) {
  				this.url = url;
  
  				url = window.decodeURIComponent( url );
  
  				url = url.replace( /^(?:https?:)?\/\/(?:www\.)?/, '' );
  
  				if ( ( index = url.indexOf( '?' ) ) !== -1 ) {
  					url = url.slice( 0, index );
  				}
  
  				if ( ( index = url.indexOf( '#' ) ) !== -1 ) {
  					url = url.slice( 0, index );
  				}
  
  				url = url.replace( /(?:index)?\.html$/, '' );
  
  				if ( url.charAt( url.length - 1 ) === '/' ) {
  					url = url.slice( 0, -1 );
  				}
  
  				// If nothing's left (maybe the URL was just a fragment), use the whole URL.
  				if ( url === '' ) {
  					url = this.url;
  				}
  
  				// If the URL is longer that 40 chars, concatenate the beginning (after the domain) and ending with ...
  				if ( url.length > 40 && ( index = url.indexOf( '/' ) ) !== -1 && ( lastIndex = url.lastIndexOf( '/' ) ) !== -1 && lastIndex !== index ) {
  					// If the beginning + ending are shorter that 40 chars, show more of the ending
  					if ( index + url.length - lastIndex < 40 ) {
  						lastIndex = -( 40 - ( index + 1 ) );
  					}
  
  					url = url.slice( 0, index + 1 ) + '\u2026' + url.slice( lastIndex );
  				}
  
  				tinymce.$( this.getEl().firstChild ).attr( 'href', this.url ).text( url );
  			}
  		}
  	} ) );
  
  	tinymce.ui.Factory.add( 'WPLinkInput', tinymce.ui.Control.extend( {
  		renderHtml: function() {
  			return (
  				'<div id="' + this._id + '" class="wp-link-input">' +
  					'<input type="text" value="" placeholder="' + tinymce.translate( 'Paste URL or type to search' ) + '" />' +
  					'<input type="text" style="display:none" value="" />' +
  				'</div>'
  			);
  		},
  		setURL: function( url ) {
  			this.getEl().firstChild.value = url;
  		},
  		getURL: function() {
  			return tinymce.trim( this.getEl().firstChild.value );
  		},
  		getLinkText: function() {
  			var text = this.getEl().firstChild.nextSibling.value;
  
  			if ( ! tinymce.trim( text ) ) {
  				return '';
  			}
  
  			return text.replace( /[\r\n\t ]+/g, ' ' );
  		},
  		reset: function() {
  			var urlInput = this.getEl().firstChild;
  
  			urlInput.value = '';
  			urlInput.nextSibling.value = '';
  		}
  	} ) );
  
  	tinymce.PluginManager.add( 'wplink', function( editor ) {
  		var toolbar;
  		var editToolbar;
  		var previewInstance;
  		var inputInstance;
  		var linkNode;
  		var doingUndoRedo;
  		var doingUndoRedoTimer;
  		var $ = window.jQuery;
  		var emailRegex = /^(mailto:)?[a-z0-9._%+-]+@[a-z0-9][a-z0-9.-]*\.[a-z]{2,63}$/i;
  		var urlRegex1 = /^https?:\/\/([^\s/?.#-][^\s\/?.#]*\.?)+(\/[^\s"]*)?$/i;
  		var urlRegex2 = /^https?:\/\/[^\/]+\.[^\/]+($|\/)/i;
  		var speak = ( typeof window.wp !== 'undefined' && window.wp.a11y && window.wp.a11y.speak ) ? window.wp.a11y.speak : function() {};
  		var hasLinkError = false;
  
  		function getSelectedLink() {
  			var href, html,
  				node = editor.selection.getStart(),
  				link = editor.dom.getParent( node, 'a[href]' );
  
  			if ( ! link ) {
  				html = editor.selection.getContent({ format: 'raw' });
  
  				if ( html && html.indexOf( '</a>' ) !== -1 ) {
  					href = html.match( /href="([^">]+)"/ );
  
  					if ( href && href[1] ) {
  						link = editor.$( 'a[href="' + href[1] + '"]', node )[0];
  					}
  
  					if ( link ) {
  						editor.selection.select( link );
  					}
  				}
  			}
  
  			return link;
  		}
  
  		function removePlaceholders() {
  			editor.$( 'a' ).each( function( i, element ) {
  				var $element = editor.$( element );
  
  				if ( $element.attr( 'href' ) === '_wp_link_placeholder' ) {
  					editor.dom.remove( element, true );
  				} else if ( $element.attr( 'data-wplink-edit' ) ) {
  					$element.attr( 'data-wplink-edit', null );
  				}
  			});
  		}
  
  		function removePlaceholderStrings( content, dataAttr ) {
  			return content.replace( /(<a [^>]+>)([\s\S]*?)<\/a>/g, function( all, tag, text ) {
  				if ( tag.indexOf( ' href="_wp_link_placeholder"' ) > -1 ) {
  					return text;
  				}
  
  				if ( dataAttr ) {
  					tag = tag.replace( / data-wplink-edit="true"/g, '' );
  				}
  
  				tag = tag.replace( / data-wplink-url-error="true"/g, '' );
  
  				return tag + text + '</a>';
  			});
  		}
  
  		function checkLink( node ) {
  			var $link = editor.$( node );
  			var href = $link.attr( 'href' );
  
  			if ( ! href || typeof $ === 'undefined' ) {
  				return;
  			}
  
  			hasLinkError = false;
  
  			if ( /^http/i.test( href ) && ( ! urlRegex1.test( href ) || ! urlRegex2.test( href ) ) ) {
  				hasLinkError = true;
  				$link.attr( 'data-wplink-url-error', 'true' );
  				speak( editor.translate( 'Warning: the link has been inserted but may have errors. Please test it.' ), 'assertive' );
  			} else {
  				$link.removeAttr( 'data-wplink-url-error' );
  			}
  		}
  
  		editor.on( 'preinit', function() {
  			if ( editor.wp && editor.wp._createToolbar ) {
  				toolbar = editor.wp._createToolbar( [
  					'wp_link_preview',
  					'wp_link_edit',
  					'wp_link_remove'
  				], true );
  
  				var editButtons = [
  					'wp_link_input',
  					'wp_link_apply'
  				];
  
  				if ( typeof window.wpLink !== 'undefined' ) {
  					editButtons.push( 'wp_link_advanced' );
  				}
  
  				editToolbar = editor.wp._createToolbar( editButtons, true );
  
  				editToolbar.on( 'show', function() {
  					if ( typeof window.wpLink === 'undefined' || ! window.wpLink.modalOpen ) {
  						window.setTimeout( function() {
  							var element = editToolbar.$el.find( 'input.ui-autocomplete-input' )[0],
  								selection = linkNode && ( linkNode.textContent || linkNode.innerText );
  
  							if ( element ) {
  								if ( ! element.value && selection && typeof window.wpLink !== 'undefined' ) {
  									element.value = window.wpLink.getUrlFromSelection( selection );
  								}
  
  								if ( ! doingUndoRedo ) {
  									element.focus();
  									element.select();
  								}
  							}
  						} );
  					}
  				} );
  
  				editToolbar.on( 'hide', function() {
  					if ( ! editToolbar.scrolling ) {
  						editor.execCommand( 'wp_link_cancel' );
  					}
  				} );
  			}
  		} );
  
  		editor.addCommand( 'WP_Link', function() {
  			if ( tinymce.Env.ie && tinymce.Env.ie < 10 && typeof window.wpLink !== 'undefined' ) {
  				window.wpLink.open( editor.id );
  				return;
  			}
  
  			linkNode = getSelectedLink();
  			editToolbar.tempHide = false;
  
  			if ( linkNode ) {
  				editor.dom.setAttribs( linkNode, { 'data-wplink-edit': true } );
  			} else {
  				removePlaceholders();
  				editor.execCommand( 'mceInsertLink', false, { href: '_wp_link_placeholder' } );
  
  				linkNode = editor.$( 'a[href="_wp_link_placeholder"]' )[0];
  				editor.nodeChanged();
  			}
  		} );
  
  		editor.addCommand( 'wp_link_apply', function() {
  			if ( editToolbar.scrolling ) {
  				return;
  			}
  
  			var href, text;
  
  			if ( linkNode ) {
  				href = inputInstance.getURL();
  				text = inputInstance.getLinkText();
  				editor.focus();
  
  				var parser = document.createElement( 'a' );
  				parser.href = href;
  
  				if ( 'javascript:' === parser.protocol || 'data:' === parser.protocol ) { // jshint ignore:line
  					href = '';
  				}
  
  				if ( ! href ) {
  					editor.dom.remove( linkNode, true );
  					return;
  				}
  
  				if ( ! /^(?:[a-z]+:|#|\?|\.|\/)/.test( href ) && ! emailRegex.test( href ) ) {
  					href = 'http://' + href;
  				}
  
  				editor.dom.setAttribs( linkNode, { href: href, 'data-wplink-edit': null } );
  
  				if ( ! tinymce.trim( linkNode.innerHTML ) ) {
  					editor.$( linkNode ).text( text || href );
  				}
  
  				checkLink( linkNode );
  			}
  
  			inputInstance.reset();
  			editor.nodeChanged();
  
  			// Audible confirmation message when a link has been inserted in the Editor.
  			if ( typeof window.wpLinkL10n !== 'undefined' && ! hasLinkError ) {
  				speak( window.wpLinkL10n.linkInserted );
  			}
  		} );
  
  		editor.addCommand( 'wp_link_cancel', function() {
  			if ( ! editToolbar.tempHide ) {
  				inputInstance.reset();
  				removePlaceholders();
  			}
  		} );
  
  		editor.addCommand( 'wp_unlink', function() {
  			editor.execCommand( 'unlink' );
  			editToolbar.tempHide = false;
  			editor.execCommand( 'wp_link_cancel' );
  		} );
  
  		// WP default shortcuts
  		editor.addShortcut( 'access+a', '', 'WP_Link' );
  		editor.addShortcut( 'access+s', '', 'wp_unlink' );
  		// The "de-facto standard" shortcut, see #27305
  		editor.addShortcut( 'meta+k', '', 'WP_Link' );
  
  		editor.addButton( 'link', {
  			icon: 'link',
  			tooltip: 'Insert/edit link',
  			cmd: 'WP_Link',
  			stateSelector: 'a[href]'
  		});
  
  		editor.addButton( 'unlink', {
  			icon: 'unlink',
  			tooltip: 'Remove link',
  			cmd: 'unlink'
  		});
  
  		editor.addMenuItem( 'link', {
  			icon: 'link',
  			text: 'Insert/edit link',
  			cmd: 'WP_Link',
  			stateSelector: 'a[href]',
  			context: 'insert',
  			prependToContext: true
  		});
  
  		editor.on( 'pastepreprocess', function( event ) {
  			var pastedStr = event.content,
  				regExp = /^(?:https?:)?\/\/\S+$/i;
  
  			if ( ! editor.selection.isCollapsed() && ! regExp.test( editor.selection.getContent() ) ) {
  				pastedStr = pastedStr.replace( /<[^>]+>/g, '' );
  				pastedStr = tinymce.trim( pastedStr );
  
  				if ( regExp.test( pastedStr ) ) {
  					editor.execCommand( 'mceInsertLink', false, {
  						href: editor.dom.decode( pastedStr )
  					} );
  
  					event.preventDefault();
  				}
  			}
  		} );
  
  		// Remove any remaining placeholders on saving.
  		editor.on( 'savecontent', function( event ) {
  			event.content = removePlaceholderStrings( event.content, true );
  		});
  
  		// Prevent adding undo levels on inserting link placeholder.
  		editor.on( 'BeforeAddUndo', function( event ) {
  			if ( event.lastLevel && event.lastLevel.content && event.level.content &&
  				event.lastLevel.content === removePlaceholderStrings( event.level.content ) ) {
  
  				event.preventDefault();
  			}
  		});
  
  		// When doing undo and redo with keyboard shortcuts (Ctrl|Cmd+Z, Ctrl|Cmd+Shift+Z, Ctrl|Cmd+Y),
  		// set a flag to not focus the inline dialog. The editor has to remain focused so the users can do consecutive undo/redo.
  		editor.on( 'keydown', function( event ) {
  			if ( event.keyCode === 27 ) { // Esc
  				editor.execCommand( 'wp_link_cancel' );
  			}
  
  			if ( event.altKey || ( tinymce.Env.mac && ( ! event.metaKey || event.ctrlKey ) ) ||
  				( ! tinymce.Env.mac && ! event.ctrlKey ) ) {
  
  				return;
  			}
  
  			if ( event.keyCode === 89 || event.keyCode === 90 ) { // Y or Z
  				doingUndoRedo = true;
  
  				window.clearTimeout( doingUndoRedoTimer );
  				doingUndoRedoTimer = window.setTimeout( function() {
  					doingUndoRedo = false;
  				}, 500 );
  			}
  		} );
  
  		editor.addButton( 'wp_link_preview', {
  			type: 'WPLinkPreview',
  			onPostRender: function() {
  				previewInstance = this;
  			}
  		} );
  
  		editor.addButton( 'wp_link_input', {
  			type: 'WPLinkInput',
  			onPostRender: function() {
  				var element = this.getEl(),
  					input = element.firstChild,
  					$input, cache, last;
  
  				inputInstance = this;
  
  				if ( $ && $.ui && $.ui.autocomplete ) {
  					$input = $( input );
  
  					$input.on( 'keydown', function() {
  						$input.removeAttr( 'aria-activedescendant' );
  					} )
  					.autocomplete( {
  						source: function( request, response ) {
  							if ( last === request.term ) {
  								response( cache );
  								return;
  							}
  
  							if ( /^https?:/.test( request.term ) || request.term.indexOf( '.' ) !== -1 ) {
  								return response();
  							}
  
  							$.post( window.ajaxurl, {
  								action: 'wp-link-ajax',
  								page: 1,
  								search: request.term,
  								_ajax_linking_nonce: $( '#_ajax_linking_nonce' ).val()
  							}, function( data ) {
  								cache = data;
  								response( data );
  							}, 'json' );
  
  							last = request.term;
  						},
  						focus: function( event, ui ) {
  							$input.attr( 'aria-activedescendant', 'mce-wp-autocomplete-' + ui.item.ID );
  							/*
  							 * Don't empty the URL input field, when using the arrow keys to
  							 * highlight items. See api.jqueryui.com/autocomplete/#event-focus
  							 */
  							event.preventDefault();
  						},
  						select: function( event, ui ) {
  							$input.val( ui.item.permalink );
  							$( element.firstChild.nextSibling ).val( ui.item.title );
  
  							if ( 9 === event.keyCode && typeof window.wpLinkL10n !== 'undefined' ) {
  								// Audible confirmation message when a link has been selected.
  								speak( window.wpLinkL10n.linkSelected );
  							}
  
  							return false;
  						},
  						open: function() {
  							$input.attr( 'aria-expanded', 'true' );
  							editToolbar.blockHide = true;
  						},
  						close: function() {
  							$input.attr( 'aria-expanded', 'false' );
  							editToolbar.blockHide = false;
  						},
  						minLength: 2,
  						position: {
  							my: 'left top+2'
  						},
  						messages: {
  							noResults: ( typeof window.uiAutocompleteL10n !== 'undefined' ) ? window.uiAutocompleteL10n.noResults : '',
  							results: function( number ) {
  								if ( typeof window.uiAutocompleteL10n !== 'undefined' ) {
  									if ( number > 1 ) {
  										return window.uiAutocompleteL10n.manyResults.replace( '%d', number );
  									}
  
  									return window.uiAutocompleteL10n.oneResult;
  								}
  							}
  						}
  					} ).autocomplete( 'instance' )._renderItem = function( ul, item ) {
  						var fallbackTitle = ( typeof window.wpLinkL10n !== 'undefined' ) ? window.wpLinkL10n.noTitle : '',
  							title = item.title ? item.title : fallbackTitle;
  
  						return $( '<li role="option" id="mce-wp-autocomplete-' + item.ID + '">' )
  						.append( '<span>' + title + '</span>&nbsp;<span class="wp-editor-float-right">' + item.info + '</span>' )
  						.appendTo( ul );
  					};
  
  					$input.attr( {
  						'role': 'combobox',
  						'aria-autocomplete': 'list',
  						'aria-expanded': 'false',
  						'aria-owns': $input.autocomplete( 'widget' ).attr( 'id' )
  					} )
  					.on( 'focus', function() {
  						var inputValue = $input.val();
  						/*
  						 * Don't trigger a search if the URL field already has a link or is empty.
  						 * Also, avoids screen readers announce `No search results`.
  						 */
  						if ( inputValue && ! /^https?:/.test( inputValue ) ) {
  							$input.autocomplete( 'search' );
  						}
  					} )
  					// Returns a jQuery object containing the menu element.
  					.autocomplete( 'widget' )
  						.addClass( 'wplink-autocomplete' )
  						.attr( 'role', 'listbox' )
  						.removeAttr( 'tabindex' ) // Remove the `tabindex=0` attribute added by jQuery UI.
  						/*
  						 * Looks like Safari and VoiceOver need an `aria-selected` attribute. See ticket #33301.
  						 * The `menufocus` and `menublur` events are the same events used to add and remove
  						 * the `ui-state-focus` CSS class on the menu items. See jQuery UI Menu Widget.
  						 */
  						.on( 'menufocus', function( event, ui ) {
  							ui.item.attr( 'aria-selected', 'true' );
  						})
  						.on( 'menublur', function() {
  							/*
  							 * The `menublur` event returns an object where the item is `null`
  							 * so we need to find the active item with other means.
  							 */
  							$( this ).find( '[aria-selected="true"]' ).removeAttr( 'aria-selected' );
  						});
  				}
  
  				tinymce.$( input ).on( 'keydown', function( event ) {
  					if ( event.keyCode === 13 ) {
  						editor.execCommand( 'wp_link_apply' );
  						event.preventDefault();
  					}
  				} );
  			}
  		} );
  
  		editor.on( 'wptoolbar', function( event ) {
  			var linkNode = editor.dom.getParent( event.element, 'a' ),
  				$linkNode, href, edit;
  
  			if ( typeof window.wpLink !== 'undefined' && window.wpLink.modalOpen ) {
  				editToolbar.tempHide = true;
  				return;
  			}
  
  			editToolbar.tempHide = false;
  
  			if ( linkNode ) {
  				$linkNode = editor.$( linkNode );
  				href = $linkNode.attr( 'href' );
  				edit = $linkNode.attr( 'data-wplink-edit' );
  
  				if ( href === '_wp_link_placeholder' || edit ) {
  					if ( href !== '_wp_link_placeholder' && ! inputInstance.getURL() ) {
  						inputInstance.setURL( href );
  					}
  
  					event.element = linkNode;
  					event.toolbar = editToolbar;
  				} else if ( href && ! $linkNode.find( 'img' ).length ) {
  					previewInstance.setURL( href );
  					event.element = linkNode;
  					event.toolbar = toolbar;
  
  					if ( $linkNode.attr( 'data-wplink-url-error' ) === 'true' ) {
  						toolbar.$el.find( '.wp-link-preview a' ).addClass( 'wplink-url-error' );
  					} else {
  						toolbar.$el.find( '.wp-link-preview a' ).removeClass( 'wplink-url-error' );
  						hasLinkError = false;
  					}
  				}
  			} else if ( editToolbar.visible() ) {
  				editor.execCommand( 'wp_link_cancel' );
  			}
  		} );
  
  		editor.addButton( 'wp_link_edit', {
  			tooltip: 'Edit ', // trailing space is needed, used for context
  			icon: 'dashicon dashicons-edit',
  			cmd: 'WP_Link'
  		} );
  
  		editor.addButton( 'wp_link_remove', {
  			tooltip: 'Remove link',
  			icon: 'dashicon dashicons-editor-unlink',
  			cmd: 'wp_unlink'
  		} );
  
  		editor.addButton( 'wp_link_advanced', {
  			tooltip: 'Link options',
  			icon: 'dashicon dashicons-admin-generic',
  			onclick: function() {
  				if ( typeof window.wpLink !== 'undefined' ) {
  					var url = inputInstance.getURL() || null,
  						text = inputInstance.getLinkText() || null;
  
  					/*
  					 * Accessibility note: moving focus back to the editor confuses
  					 * screen readers. They will announce again the Editor ARIA role
  					 * `application` and the iframe `title` attribute.
  					 *
  					 * Unfortunately IE looses the selection when the editor iframe
  					 * looses focus, so without returning focus to the editor, the code
  					 * in the modal will not be able to get the selection, place the caret
  					 * at the same location, etc.
  					 */
  					if ( tinymce.Env.ie ) {
  						editor.focus(); // Needed for IE
  					}
  
  					editToolbar.tempHide = true;
  					window.wpLink.open( editor.id, url, text, linkNode );
  
  					inputInstance.reset();
  				}
  			}
  		} );
  
  		editor.addButton( 'wp_link_apply', {
  			tooltip: 'Apply',
  			icon: 'dashicon dashicons-editor-break',
  			cmd: 'wp_link_apply',
  			classes: 'widget btn primary'
  		} );
  
  		return {
  			close: function() {
  				editToolbar.tempHide = false;
  				editor.execCommand( 'wp_link_cancel' );
  			},
  			checkLink: checkLink
  		};
  	} );
  } )( window.tinymce );
  