/* global ajaxurl, tinymce, wpLinkL10n, setUserSetting, wpActiveEditor */

( function( $ ) {

	var editor, searchTimer, River, Query, correctedURL,

		inputs = {},

		rivers = {},

		isTouch = ( 'ontouchend' in document );

	function getLink() {

		return editor.dom.getParent( editor.selection.getNode(), 'a' );

	}

		init: function() {

			inputs.wrap = $('#wp-link-wrap');

			inputs.dialog = $( '#wp-link' );

			inputs.backdrop = $( '#wp-link-backdrop' );

			inputs.submit = $( '#wp-link-submit' );

			inputs.close = $( '#wp-link-close' );

			// Input

			inputs.text = $( '#wp-link-text' );

			inputs.url = $( '#wp-link-url' );

			inputs.nonce = $( '#_ajax_linking_nonce' );

			inputs.openInNewTab = $( '#wp-link-target' );

			inputs.search = $( '#wp-link-search' );

			rivers.search = new River( $( '#search-results' ) );

			rivers.recent = new River( $( '#most-recent-results' ) );

			rivers.elements = inputs.dialog.find( '.query-results' );

			// Get search notice text

			inputs.queryNotice = $( '#query-notice-message' );

			inputs.queryNoticeTextDefault = inputs.queryNotice.find( '.query-notice-default' );

			inputs.queryNoticeTextHint = inputs.queryNotice.find( '.query-notice-hint' );

			inputs.submit.click( function( event ) {

				event.preventDefault();

			inputs.close.add( inputs.backdrop ).add( '#wp-link-cancel a' ).click( function( event ) {

				event.preventDefault();

			$( '#wp-link-search-toggle' ).on( 'click', wpLink.toggleInternalLinking );

			rivers.elements.on( 'river-select', wpLink.updateFields );

			// Display 'hint' message when search field or 'query-results' box are focused

			inputs.search.on( 'focus.wplink', function() {

				inputs.queryNoticeTextDefault.hide();

				inputs.queryNoticeTextHint.removeClass( 'screen-reader-text' ).show();

			} ).on( 'blur.wplink', function() {

				inputs.queryNoticeTextDefault.show();

				inputs.queryNoticeTextHint.addClass( 'screen-reader-text' ).hide();

			} );

			inputs.search.keyup( function() {

				var self = this;

				window.clearTimeout( searchTimer );

				searchTimer = window.setTimeout( function() {

					wpLink.searchInternalLinks.call( self );

				}, 500 );

			});

			function correctURL() {

				var url = $.trim( inputs.url.val() );

				if ( url && correctedURL !== url && ! /^(?:[a-z]+:|#|\?|\.|\/)/.test( url ) ) {

					inputs.url.val( 'http://' + url );

					correctedURL = url;

				}

			}

			inputs.url.on( 'paste', function() {

				setTimeout( correctURL, 0 );

			} );

			inputs.url.on( 'blur', correctURL );

		open: function( editorId ) {

			var ed;

			$( document.body ).addClass( 'modal-open' );

			if ( editorId ) {

				window.wpActiveEditor = editorId;

			}

			if ( ! window.wpActiveEditor ) {

				return;

			}

			this.textarea = $( '#' + window.wpActiveEditor ).get( 0 );

			if ( typeof tinymce !== 'undefined' ) {

				ed = tinymce.get( wpActiveEditor );

				if ( ed && ! ed.isHidden() ) {

					editor = ed;

				} else {

					editor = null;

				}

				if ( editor && tinymce.isIE ) {

					editor.windowManager.bookmark = editor.selection.getBookmark();

				}

			}

				this.textarea.focus();

				this.range = document.selection.createRange();

			inputs.wrap.show();

			inputs.backdrop.show();

			wpLink.refresh();

			$( document ).trigger( 'wplink-open', inputs.wrap );

		isMCE: function() {

			return editor && ! editor.isHidden();

		refresh: function() {

			var text = '';

			if ( wpLink.isMCE() ) {

			} else {

				// For the Text editor the "Link text" field is always shown

				if ( ! inputs.wrap.hasClass( 'has-text-field' ) ) {

					inputs.wrap.addClass( 'has-text-field' );

				}

				if ( document.selection ) {

					// Old IE

					text = document.selection.createRange().text || '';

				} else if ( typeof this.textarea.selectionStart !== 'undefined' &&

					( this.textarea.selectionStart !== this.textarea.selectionEnd ) ) {

					// W3C

					text = this.textarea.value.substring( this.textarea.selectionStart, this.textarea.selectionEnd ) || '';

				}

				inputs.text.val( text );

				wpLink.setDefaultValues();

			}

			if ( isTouch ) {

				// Close the onscreen keyboard

				inputs.url.focus().blur();

			} else {

				// Focus the URL field and highlight its contents.

				// If this is moved above the selection changes,

				// IE will show a flashing cursor over the dialog.

				inputs.url.focus()[0].select();

			}

			if ( ! rivers.recent.ul.children().length ) {

			}

			correctedURL = inputs.url.val().replace( /^http:\/\//, '' );

		hasSelectedText: function( linkNode ) {

			var html = editor.selection.getContent();

			// Partial html and not a fully selected anchor element

			if ( /</.test( html ) && ( ! /^<a [^>]+>[^<]+<\/a>$/.test( html ) || html.indexOf('href=') === -1 ) ) {

				return false;

			}

			if ( linkNode ) {

				var nodes = linkNode.childNodes, i;

				if ( nodes.length === 0 ) {

					return false;

				}

				for ( i = nodes.length - 1; i >= 0; i-- ) {

					if ( nodes[i].nodeType != 3 ) {

						return false;

					}

				}

			}

			return true;

		},

		mceRefresh: function() {

			var text,

				selectedNode = editor.selection.getNode(),

				linkNode = editor.dom.getParent( selectedNode, 'a[href]' ),

				onlyText = this.hasSelectedText( linkNode );

			if ( linkNode ) {

				text = linkNode.innerText || linkNode.textContent;

				inputs.url.val( editor.dom.getAttrib( linkNode, 'href' ) );

				inputs.openInNewTab.prop( 'checked', '_blank' === editor.dom.getAttrib( linkNode, 'target' ) );

			} else {

				text = editor.selection.getContent({ format: 'text' });

				this.setDefaultValues();

			}

			if ( onlyText ) {

				inputs.text.val( text || '' );

				inputs.wrap.addClass( 'has-text-field' );

				inputs.text.val( '' );

				inputs.wrap.removeClass( 'has-text-field' );

		close: function() {

			$( document.body ).removeClass( 'modal-open' );

			} else {

				editor.focus();

			inputs.backdrop.hide();

			inputs.wrap.hide();

			correctedURL = false;

			$( document ).trigger( 'wplink-close', inputs.wrap );

		getAttrs: function() {

				href: $.trim( inputs.url.val() ),

				target: inputs.openInNewTab.prop( 'checked' ) ? '_blank' : ''

		update: function() {

			if ( wpLink.isMCE() ) {

			} else {

			}

		htmlUpdate: function() {

			var attrs, text, html, begin, end, cursor, selection,

			if ( ! textarea ) {

			}

			text = inputs.text.val();

			if ( ! attrs.href ) {

			}

			if ( attrs.target ) {

			}

				wpLink.range.text = html + ( text || wpLink.range.text ) + '</a>';

				begin = textarea.selectionStart;

				end = textarea.selectionEnd;

				selection = text || textarea.value.substring( begin, end );

				html = html + selection + '</a>';

				cursor = begin + html.length;

				// If no text is selected, place the cursor inside the closing tag.

				if ( begin === end && ! selection ) {

					cursor -= 4;

				}

				textarea.value = (

					textarea.value.substring( 0, begin ) +

					html +

					textarea.value.substring( end, textarea.value.length )

				);