/**

 * @output wp-includes/js/wplink.js

 */

 /* global wpLink */

( function( $, wpLinkL10n, wp ) {

	var editor, searchTimer, River, Query, correctedURL,

		emailRegexp = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,63}$/i,

		urlRegexp = /^(https?|ftp):\/\/[A-Z0-9.-]+\.[A-Z]{2,63}[^ "]*$/i,

		inputs = {},

		rivers = {},

		isTouch = ( 'ontouchend' in document );

	function getLink() {

		if ( editor ) {

			return editor.$( 'a[data-wplink-edit="true"]' );

		}

		return null;

	}

	window.wpLink = {

		timeToTriggerRiver: 150,

		minRiverAJAXDuration: 200,

		riverBottomThreshold: 5,

		keySensitivity: 100,

		lastSearch: '',

		textarea: '',

		modalOpen: false,

		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' );

			// Build rivers.

			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' );

			// Bind event handlers.

			inputs.dialog.on( 'keydown', wpLink.keydown );

			inputs.dialog.on( 'keyup', wpLink.keyup );

			inputs.submit.on( 'click', function( event ) {

				event.preventDefault();

				wpLink.update();

			});

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

				event.preventDefault();

				wpLink.close();

			});

			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.on( 'keyup input', function() {

				window.clearTimeout( searchTimer );

				searchTimer = window.setTimeout( function() {

					wpLink.searchInternalLinks();

				}, 500 );

			});

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

				setTimeout( wpLink.correctURL, 0 );

			} );

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

		},

		// If URL wasn't corrected last time and doesn't start with http:, https:, ? # or /, prepend http://.

		correctURL: function () {

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

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

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

				correctedURL = url;

			}

		},

		open: function( editorId, url, text ) {

			var ed,

				$body = $( document.body );

			$( '#wpwrap' ).attr( 'aria-hidden', 'true' );

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

			wpLink.modalOpen = true;

			wpLink.range = null;

			if ( editorId ) {

				window.wpActiveEditor = editorId;

			}

			if ( ! window.wpActiveEditor ) {

				return;

			}

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

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

				// Make sure the link wrapper is the last element in the body,

				// or the inline editor toolbar may show above the backdrop.

				$body.append( inputs.backdrop, inputs.wrap );

				ed = window.tinymce.get( window.wpActiveEditor );

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

					editor = ed;

				} else {

					editor = null;

				}

			}

			if ( ! wpLink.isMCE() && document.selection ) {

				this.textarea.focus();

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

			}

			inputs.wrap.show();

			inputs.backdrop.show();

			wpLink.refresh( url, text );

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

		},

		isMCE: function() {

			return editor && ! editor.isHidden();

		},

		refresh: function( url, text ) {

			var linkText = '';

			// Refresh rivers (clear links, check visibility).

			rivers.search.refresh();

			rivers.recent.refresh();

			if ( wpLink.isMCE() ) {

				wpLink.mceRefresh( url, text );

			} else {

				// For the Code 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.

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

				}

				inputs.text.val( text );

				wpLink.setDefaultValues();

			}

			if ( isTouch ) {

				// Close the onscreen keyboard.

				inputs.url.trigger( 'focus' ).trigger( '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.

				 */

				window.setTimeout( function() {

					inputs.url[0].select();

					inputs.url.trigger( 'focus' );

				} );

			}

			// Load the most recent results if this is the first time opening the panel.

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

				rivers.recent.ajax();

			}

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

		},

		hasSelectedText: function( linkNode ) {

			var node, nodes, i, 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.length ) {

				nodes = linkNode[0].childNodes;

				if ( ! nodes || ! nodes.length ) {

					return false;

				}

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

					node = nodes[i];

					if ( node.nodeType != 3 && ! window.tinymce.dom.BookmarkManager.isBookmarkNode( node ) ) {

						return false;

					}

				}

			}

			return true;

		},

		mceRefresh: function( searchStr, text ) {

			var linkText, href,

				linkNode = getLink(),

				onlyText = this.hasSelectedText( linkNode );

			if ( linkNode.length ) {

				linkText = linkNode.text();

				href = linkNode.attr( 'href' );

				if ( ! linkText.trim() ) {

					linkText = text || '';

				}

				if ( searchStr && ( urlRegexp.test( searchStr ) || emailRegexp.test( searchStr ) ) ) {

					href = searchStr;

				}

				if ( href !== '_wp_link_placeholder' ) {

					inputs.url.val( href );

					inputs.openInNewTab.prop( 'checked', '_blank' === linkNode.attr( 'target' ) );

					inputs.submit.val( wpLinkL10n.update );

				} else {

					this.setDefaultValues( linkText );

				}

				if ( searchStr && searchStr !== href ) {

					// The user has typed something in the inline dialog. Trigger a search with it.

					inputs.search.val( searchStr );

				} else {

					inputs.search.val( '' );

				}

				// Always reset the search.

				window.setTimeout( function() {

					wpLink.searchInternalLinks();

				} );

			} else {

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

				this.setDefaultValues( linkText );

			}

			if ( onlyText ) {

				inputs.text.val( linkText );

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

			} else {

				inputs.text.val( '' );

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

			}

		},

		close: function( reset ) {

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

			$( '#wpwrap' ).removeAttr( 'aria-hidden' );

			wpLink.modalOpen = false;

			if ( reset !== 'noReset' ) {

				if ( ! wpLink.isMCE() ) {

					wpLink.textarea.focus();

					if ( wpLink.range ) {

						wpLink.range.moveToBookmark( wpLink.range.getBookmark() );

						wpLink.range.select();

					}

				} else {

					if ( editor.plugins.wplink ) {

						editor.plugins.wplink.close();

					}

					editor.focus();

				}

			}

			inputs.backdrop.hide();

			inputs.wrap.hide();

			correctedURL = false;

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

		},

		getAttrs: function() {

			wpLink.correctURL();

			return {

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

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

			};

		},

		buildHtml: function(attrs) {

			var html = '<a href="' + attrs.href + '"';

			if ( attrs.target ) {

				html += ' target="' + attrs.target + '"';

			}

			return html + '>';

		},

		update: function() {

			if ( wpLink.isMCE() ) {