wp-includes/js/wplink.js

   1 var wpLink;
   2
   3 ( function( $, wpLinkL10n, wp ) {
   4         var editor, searchTimer, River, Query, correctedURL, linkNode,
   5                 emailRegexp = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,63}$/i,
   6                 urlRegexp = /^(https?|ftp):\/\/[A-Z0-9.-]+\.[A-Z]{2,63}[^ "]*$/i,
   7                 inputs = {},
   8                 rivers = {},
   9                 isTouch = ( 'ontouchend' in document );
  10
  11         function getLink() {
  12                 return linkNode || editor.dom.getParent( editor.selection.getNode(), 'a[href]' );
  13         }
  14
  15         wpLink = {
  16                 timeToTriggerRiver: 150,
  17                 minRiverAJAXDuration: 200,
  18                 riverBottomThreshold: 5,
  19                 keySensitivity: 100,
  20                 lastSearch: '',
  21                 textarea: '',
  22                 modalOpen: false,
  23
  24                 init: function() {
  25                         inputs.wrap = $('#wp-link-wrap');
  26                         inputs.dialog = $( '#wp-link' );
  27                         inputs.backdrop = $( '#wp-link-backdrop' );
  28                         inputs.submit = $( '#wp-link-submit' );
  29                         inputs.close = $( '#wp-link-close' );
  30
  31                         // Input
  32                         inputs.text = $( '#wp-link-text' );
  33                         inputs.url = $( '#wp-link-url' );
  34                         inputs.nonce = $( '#_ajax_linking_nonce' );
  35                         inputs.openInNewTab = $( '#wp-link-target' );
  36                         inputs.search = $( '#wp-link-search' );
  37
  38                         // Build Rivers
  39                         rivers.search = new River( $( '#search-results' ) );
  40                         rivers.recent = new River( $( '#most-recent-results' ) );
  41                         rivers.elements = inputs.dialog.find( '.query-results' );
  42
  43                         // Get search notice text
  44                         inputs.queryNotice = $( '#query-notice-message' );
  45                         inputs.queryNoticeTextDefault = inputs.queryNotice.find( '.query-notice-default' );
  46                         inputs.queryNoticeTextHint = inputs.queryNotice.find( '.query-notice-hint' );
  47
  48                         // Bind event handlers
  49                         inputs.dialog.keydown( wpLink.keydown );
  50                         inputs.dialog.keyup( wpLink.keyup );
  51                         inputs.submit.click( function( event ) {
  52                                 event.preventDefault();
  53                                 wpLink.update();
  54                         });
  55
  56                         inputs.close.add( inputs.backdrop ).add( '#wp-link-cancel button' ).click( function( event ) {
  57                                 event.preventDefault();
  58                                 wpLink.close();
  59                         });
  60
  61                         rivers.elements.on( 'river-select', wpLink.updateFields );
  62
  63                         // Display 'hint' message when search field or 'query-results' box are focused
  64                         inputs.search.on( 'focus.wplink', function() {
  65                                 inputs.queryNoticeTextDefault.hide();
  66                                 inputs.queryNoticeTextHint.removeClass( 'screen-reader-text' ).show();
  67                         } ).on( 'blur.wplink', function() {
  68                                 inputs.queryNoticeTextDefault.show();
  69                                 inputs.queryNoticeTextHint.addClass( 'screen-reader-text' ).hide();
  70                         } );
  71
  72                         inputs.search.on( 'keyup input', function() {
  73                                 window.clearTimeout( searchTimer );
  74                                 searchTimer = window.setTimeout( function() {
  75                                         wpLink.searchInternalLinks();
  76                                 }, 500 );
  77                         });
  78
  79                         inputs.url.on( 'paste', function() {
  80                                 setTimeout( wpLink.correctURL, 0 );
  81                         } );
  82
  83                         inputs.url.on( 'blur', wpLink.correctURL );
  84                 },
  85
  86                 // If URL wasn't corrected last time and doesn't start with http:, https:, ? # or /, prepend http://
  87                 correctURL: function () {
  88                         var url = $.trim( inputs.url.val() );
  89
  90                         if ( url && correctedURL !== url && ! /^(?:[a-z]+:|#|\?|\.|\/)/.test( url ) ) {
  91                                 inputs.url.val( 'http://' + url );
  92                                 correctedURL = url;
  93                         }
  94                 },
  95
  96                 open: function( editorId, url, text, node ) {
  97                         var ed,
  98                                 $body = $( document.body );
  99
 100                         $body.addClass( 'modal-open' );
 101                         wpLink.modalOpen = true;
 102                         linkNode = node;
 103
 104                         wpLink.range = null;
 105
 106                         if ( editorId ) {
 107                                 window.wpActiveEditor = editorId;
 108                         }
 109
 110                         if ( ! window.wpActiveEditor ) {
 111                                 return;
 112                         }
 113
 114                         this.textarea = $( '#' + window.wpActiveEditor ).get( 0 );
 115
 116                         if ( typeof window.tinymce !== 'undefined' ) {
 117                                 // Make sure the link wrapper is the last element in the body,
 118                                 // or the inline editor toolbar may show above the backdrop.
 119                                 $body.append( inputs.backdrop, inputs.wrap );
 120
 121                                 ed = window.tinymce.get( window.wpActiveEditor );
 122
 123                                 if ( ed && ! ed.isHidden() ) {
 124                                         editor = ed;
 125                                 } else {
 126                                         editor = null;
 127                                 }
 128
 129                                 if ( editor && window.tinymce.isIE ) {
 130                                         editor.windowManager.wplinkBookmark = editor.selection.getBookmark();
 131                                 }
 132                         }
 133
 134                         if ( ! wpLink.isMCE() && document.selection ) {
 135                                 this.textarea.focus();
 136                                 this.range = document.selection.createRange();
 137                         }
 138
 139                         inputs.wrap.show();
 140                         inputs.backdrop.show();
 141
 142                         wpLink.refresh( url, text );
 143
 144                         $( document ).trigger( 'wplink-open', inputs.wrap );
 145                 },
 146
 147                 isMCE: function() {
 148                         return editor && ! editor.isHidden();
 149                 },
 150
 151                 refresh: function( url, text ) {
 152                         var linkText = '';
 153
 154                         // Refresh rivers (clear links, check visibility)
 155                         rivers.search.refresh();
 156                         rivers.recent.refresh();
 157
 158                         if ( wpLink.isMCE() ) {
 159                                 wpLink.mceRefresh( url, text );
 160                         } else {
 161                                 // For the Text editor the "Link text" field is always shown
 162                                 if ( ! inputs.wrap.hasClass( 'has-text-field' ) ) {
 163                                         inputs.wrap.addClass( 'has-text-field' );
 164                                 }
 165
 166                                 if ( document.selection ) {
 167                                         // Old IE
 168                                         linkText = document.selection.createRange().text || text || '';
 169                                 } else if ( typeof this.textarea.selectionStart !== 'undefined' &&
 170                                         ( this.textarea.selectionStart !== this.textarea.selectionEnd ) ) {
 171                                         // W3C
 172                                         text = this.textarea.value.substring( this.textarea.selectionStart, this.textarea.selectionEnd ) || text || '';
 173                                 }
 174
 175                                 inputs.text.val( text );
 176                                 wpLink.setDefaultValues();
 177                         }
 178
 179                         if ( isTouch ) {
 180                                 // Close the onscreen keyboard
 181                                 inputs.url.focus().blur();
 182                         } else {
 183                                 // Focus the URL field and highlight its contents.
 184                                 // If this is moved above the selection changes,
 185                                 // IE will show a flashing cursor over the dialog.
 186                                 window.setTimeout( function() {
 187                                         inputs.url[0].select();
 188                                         inputs.url.focus();
 189                                 } );
 190                         }
 191
 192                         // Load the most recent results if this is the first time opening the panel.
 193                         if ( ! rivers.recent.ul.children().length ) {
 194                                 rivers.recent.ajax();
 195                         }
 196
 197                         correctedURL = inputs.url.val().replace( /^http:\/\//, '' );
 198                 },
 199
 200                 hasSelectedText: function( linkNode ) {
 201                         var node, nodes, i, html = editor.selection.getContent();
 202
 203                         // Partial html and not a fully selected anchor element
 204                         if ( /</.test( html ) && ( ! /^<a [^>]+>[^<]+<\/a>$/.test( html ) || html.indexOf('href=') === -1 ) ) {
 205                                 return false;
 206                         }
 207
 208                         if ( linkNode ) {
 209                                 nodes = linkNode.childNodes;
 210
 211                                 if ( nodes.length === 0 ) {
 212                                         return false;
 213                                 }
 214
 215                                 for ( i = nodes.length - 1; i >= 0; i-- ) {
 216                                         node = nodes[i];
 217
 218                                         if ( node.nodeType != 3 && ! window.tinymce.dom.BookmarkManager.isBookmarkNode( node ) ) {
 219                                                 return false;
 220                                         }
 221                                 }
 222                         }
 223
 224                         return true;
 225                 },
 226
 227                 mceRefresh: function( searchStr, text ) {
 228                         var linkText, href,
 229                                 linkNode = getLink(),
 230                                 onlyText = this.hasSelectedText( linkNode );
 231
 232                         if ( linkNode ) {
 233                                 linkText = linkNode.textContent || linkNode.innerText;
 234                                 href = editor.dom.getAttrib( linkNode, 'href' );
 235
 236                                 if ( ! $.trim( linkText ) ) {
 237                                         linkText = text || '';
 238                                 }
 239
 240                                 if ( searchStr && ( urlRegexp.test( searchStr ) || emailRegexp.test( searchStr ) ) ) {
 241                                         href = searchStr;
 242                                 }
 243
 244                                 if ( href !== '_wp_link_placeholder' ) {
 245                                         inputs.url.val( href );
 246                                         inputs.openInNewTab.prop( 'checked', '_blank' === editor.dom.getAttrib( linkNode, 'target' ) );
 247                                         inputs.submit.val( wpLinkL10n.update );
 248                                 } else {
 249                                         this.setDefaultValues( linkText );
 250                                 }
 251
 252                                 if ( searchStr && searchStr !== href ) {
 253                                         // The user has typed something in the inline dialog. Trigger a search with it.
 254                                         inputs.search.val( searchStr );
 255                                 } else {
 256                                         inputs.search.val( '' );
 257                                 }
 258
 259                                 // Always reset the search
 260                                 window.setTimeout( function() {
 261                                         wpLink.searchInternalLinks();
 262                                 } );
 263                         } else {
 264                                 linkText = editor.selection.getContent({ format: 'text' }) || text || '';
 265                                 this.setDefaultValues( linkText );
 266                         }
 267
 268                         if ( onlyText ) {
 269                                 inputs.text.val( linkText );
 270                                 inputs.wrap.addClass( 'has-text-field' );
 271                         } else {
 272                                 inputs.text.val( '' );
 273                                 inputs.wrap.removeClass( 'has-text-field' );
 274                         }
 275                 },
 276
 277                 close: function( reset ) {
 278                         $( document.body ).removeClass( 'modal-open' );
 279                         wpLink.modalOpen = false;
 280
 281                         if ( reset !== 'noReset' ) {
 282                                 if ( ! wpLink.isMCE() ) {
 283                                         wpLink.textarea.focus();
 284
 285                                         if ( wpLink.range ) {
 286                                                 wpLink.range.moveToBookmark( wpLink.range.getBookmark() );
 287                                                 wpLink.range.select();
 288                                         }
 289                                 } else {
 290                                         if ( editor.plugins.wplink ) {
 291                                                 editor.plugins.wplink.close();
 292                                         }
 293
 294                                         editor.focus();
 295                                 }
 296                         }
 297
 298                         inputs.backdrop.hide();
 299                         inputs.wrap.hide();
 300
 301                         correctedURL = false;
 302
 303                         $( document ).trigger( 'wplink-close', inputs.wrap );
 304                 },
 305
 306                 getAttrs: function() {
 307                         wpLink.correctURL();
 308
 309                         return {
 310                                 href: $.trim( inputs.url.val() ),
 311                                 target: inputs.openInNewTab.prop( 'checked' ) ? '_blank' : ''
 312                         };
 313                 },
 314
 315                 buildHtml: function(attrs) {
 316                         var html = '<a href="' + attrs.href + '"';
 317
 318                         if ( attrs.target ) {
 319                                 html += ' target="' + attrs.target + '"';
 320                         }
 321
 322                         return html + '>';
 323                 },
 324
 325                 update: function() {
 326                         if ( wpLink.isMCE() ) {
 327                                 wpLink.mceUpdate();
 328                         } else {
 329                                 wpLink.htmlUpdate();
 330                         }
 331                 },
 332
 333                 htmlUpdate: function() {
 334                         var attrs, text, html, begin, end, cursor, selection,
 335                                 textarea = wpLink.textarea;
 336
 337                         if ( ! textarea ) {
 338                                 return;
 339                         }
 340
 341                         attrs = wpLink.getAttrs();
 342                         text = inputs.text.val();
 343
 344                         // If there's no href, return.
 345                         if ( ! attrs.href ) {
 346                                 return;
 347                         }
 348
 349                         html = wpLink.buildHtml(attrs);
 350
 351                         // Insert HTML
 352                         if ( document.selection && wpLink.range ) {
 353                                 // IE
 354                                 // Note: If no text is selected, IE will not place the cursor
 355                                 //       inside the closing tag.
 356                                 textarea.focus();
 357                                 wpLink.range.text = html + ( text || wpLink.range.text ) + '</a>';
 358                                 wpLink.range.moveToBookmark( wpLink.range.getBookmark() );
 359                                 wpLink.range.select();
 360
 361                                 wpLink.range = null;
 362                         } else if ( typeof textarea.selectionStart !== 'undefined' ) {
 363                                 // W3C
 364                                 begin = textarea.selectionStart;
 365                                 end = textarea.selectionEnd;
 366                                 selection = text || textarea.value.substring( begin, end );
 367                                 html = html + selection + '</a>';
 368                                 cursor = begin + html.length;
 369
 370                                 // If no text is selected, place the cursor inside the closing tag.
 371                                 if ( begin === end && ! selection ) {
 372                                         cursor -= 4;
 373                                 }
 374
 375                                 textarea.value = (
 376                                         textarea.value.substring( 0, begin ) +
 377                                         html +
 378                                         textarea.value.substring( end, textarea.value.length )
 379                                 );
 380
 381                                 // Update cursor position
 382                                 textarea.selectionStart = textarea.selectionEnd = cursor;
 383                         }
 384
 385                         wpLink.close();
 386                         textarea.focus();
 387
 388                         // Audible confirmation message when a link has been inserted in the Editor.
 389                         wp.a11y.speak( wpLinkL10n.linkInserted );
 390                 },
 391
 392                 mceUpdate: function() {
 393                         var attrs = wpLink.getAttrs(),
 394                                 link, text;
 395
 396                         if ( window.tinymce.isIE && editor.windowManager.wplinkBookmark ) {
 397                                 editor.selection.moveToBookmark( editor.windowManager.wplinkBookmark );
 398                                 editor.windowManager.wplinkBookmark = null;
 399                         }
 400
 401                         if ( ! attrs.href ) {
 402                                 editor.execCommand( 'unlink' );
 403                                 wpLink.close();
 404                                 return;
 405                         }
 406
 407                         link = getLink();
 408
 409                         if ( inputs.wrap.hasClass( 'has-text-field' ) ) {
 410                                 text = inputs.text.val() || attrs.href;
 411                         }
 412
 413                         if ( link ) {
 414                                 if ( text ) {
 415                                         if ( 'innerText' in link ) {
 416                                                 link.innerText = text;
 417                                         } else {
 418                                                 link.textContent = text;
 419                                         }
 420                                 }
 421
 422                                 // Not editing any more
 423                                 attrs['data-wplink-edit'] = null;
 424                                 editor.dom.setAttribs( link, attrs );
 425                         } else {
 426                                 if ( text ) {
 427                                         editor.selection.setNode( editor.dom.create( 'a', attrs, editor.dom.encode( text ) ) );
 428                                 } else {
 429                                         editor.execCommand( 'mceInsertLink', false, attrs );
 430                                 }
 431                         }
 432
 433                         wpLink.close( 'noReset' );
 434                         editor.focus();
 435                         editor.nodeChanged();
 436
 437                         if ( link && editor.plugins.wplink ) {
 438                                 editor.plugins.wplink.checkLink( link );
 439                         }
 440
 441                         // Audible confirmation message when a link has been inserted in the Editor.
 442                         wp.a11y.speak( wpLinkL10n.linkInserted );
 443                 },
 444
 445                 updateFields: function( e, li ) {
 446                         inputs.url.val( li.children( '.item-permalink' ).val() );
 447                 },
 448
 449                 getUrlFromSelection: function( selection ) {
 450                         if ( ! selection ) {
 451                                 if ( this.isMCE() ) {
 452                                         selection = editor.selection.getContent({ format: 'text' });
 453                                 } else if ( document.selection && wpLink.range ) {
 454                                         selection = wpLink.range.text;
 455                                 } else if ( typeof this.textarea.selectionStart !== 'undefined' ) {
 456                                         selection = this.textarea.value.substring( this.textarea.selectionStart, this.textarea.selectionEnd );
 457                                 }
 458                         }
 459
 460                         selection = $.trim( selection );
 461
 462                         if ( selection && emailRegexp.test( selection ) ) {
 463                                 // Selection is email address
 464                                 return 'mailto:' + selection;
 465                         } else if ( selection && urlRegexp.test( selection ) ) {
 466                                 // Selection is URL
 467                                 return selection.replace( /&amp;|&#0?38;/gi, '&' );
 468                         }
 469
 470                         return '';
 471                 },
 472
 473                 setDefaultValues: function( selection ) {
 474                         inputs.url.val( this.getUrlFromSelection( selection ) );
 475
 476                         // Empty the search field and swap the "rivers".
 477                         inputs.search.val('');
 478                         wpLink.searchInternalLinks();
 479
 480                         // Update save prompt.
 481                         inputs.submit.val( wpLinkL10n.save );
 482                 },
 483
 484                 searchInternalLinks: function() {
 485                         var waiting,
 486                                 search = inputs.search.val() || '';
 487
 488                         if ( search.length > 2 ) {
 489                                 rivers.recent.hide();
 490                                 rivers.search.show();
 491
 492                                 // Don't search if the keypress didn't change the title.
 493                                 if ( wpLink.lastSearch == search )
 494                                         return;
 495
 496                                 wpLink.lastSearch = search;
 497                                 waiting = inputs.search.parent().find( '.spinner' ).addClass( 'is-active' );
 498
 499                                 rivers.search.change( search );
 500                                 rivers.search.ajax( function() {
 501                                         waiting.removeClass( 'is-active' );
 502                                 });
 503                         } else {
 504                                 rivers.search.hide();
 505                                 rivers.recent.show();
 506                         }
 507                 },
 508
 509                 next: function() {
 510                         rivers.search.next();
 511                         rivers.recent.next();
 512                 },
 513
 514                 prev: function() {
 515                         rivers.search.prev();
 516                         rivers.recent.prev();
 517                 },
 518
 519                 keydown: function( event ) {
 520                         var fn, id;
 521
 522                         // Escape key.
 523                         if ( 27 === event.keyCode ) {
 524                                 wpLink.close();
 525                                 event.stopImmediatePropagation();
 526                         // Tab key.
 527                         } else if ( 9 === event.keyCode ) {
 528                                 id = event.target.id;
 529
 530                                 // wp-link-submit must always be the last focusable element in the dialog.
 531                                 // following focusable elements will be skipped on keyboard navigation.
 532                                 if ( id === 'wp-link-submit' && ! event.shiftKey ) {
 533                                         inputs.close.focus();
 534                                         event.preventDefault();
 535                                 } else if ( id === 'wp-link-close' && event.shiftKey ) {
 536                                         inputs.submit.focus();
 537                                         event.preventDefault();
 538                                 }
 539                         }
 540
 541                         // Up Arrow and Down Arrow keys.
 542                         if ( 38 !== event.keyCode && 40 !== event.keyCode ) {
 543                                 return;
 544                         }
 545
 546                         if ( document.activeElement &&
 547                                 ( document.activeElement.id === 'link-title-field' || document.activeElement.id === 'url-field' ) ) {
 548                                 return;
 549                         }
 550
 551                         // Up Arrow key.
 552                         fn = 38 === event.keyCode ? 'prev' : 'next';
 553                         clearInterval( wpLink.keyInterval );
 554                         wpLink[ fn ]();
 555                         wpLink.keyInterval = setInterval( wpLink[ fn ], wpLink.keySensitivity );
 556                         event.preventDefault();
 557                 },
 558
 559                 keyup: function( event ) {
 560                         // Up Arrow and Down Arrow keys.
 561                         if ( 38 === event.keyCode || 40 === event.keyCode ) {
 562                                 clearInterval( wpLink.keyInterval );
 563                                 event.preventDefault();
 564                         }
 565                 },
 566
 567                 delayedCallback: function( func, delay ) {
 568                         var timeoutTriggered, funcTriggered, funcArgs, funcContext;
 569
 570                         if ( ! delay )
 571                                 return func;
 572
 573                         setTimeout( function() {
 574                                 if ( funcTriggered )
 575                                         return func.apply( funcContext, funcArgs );
 576                                 // Otherwise, wait.
 577                                 timeoutTriggered = true;
 578                         }, delay );
 579
 580                         return function() {
 581                                 if ( timeoutTriggered )
 582                                         return func.apply( this, arguments );
 583                                 // Otherwise, wait.
 584                                 funcArgs = arguments;
 585                                 funcContext = this;
 586                                 funcTriggered = true;
 587                         };
 588                 }
 589         };
 590
 591         River = function( element, search ) {
 592                 var self = this;
 593                 this.element = element;
 594                 this.ul = element.children( 'ul' );
 595                 this.contentHeight = element.children( '#link-selector-height' );
 596                 this.waiting = element.find('.river-waiting');
 597
 598                 this.change( search );
 599                 this.refresh();
 600
 601                 $( '#wp-link .query-results, #wp-link #link-selector' ).scroll( function() {
 602                         self.maybeLoad();
 603                 });
 604                 element.on( 'click', 'li', function( event ) {
 605                         self.select( $( this ), event );
 606                 });
 607         };
 608
 609         $.extend( River.prototype, {
 610                 refresh: function() {
 611                         this.deselect();
 612                         this.visible = this.element.is( ':visible' );
 613                 },
 614                 show: function() {
 615                         if ( ! this.visible ) {
 616                                 this.deselect();
 617                                 this.element.show();
 618                                 this.visible = true;
 619                         }
 620                 },
 621                 hide: function() {
 622                         this.element.hide();
 623                         this.visible = false;
 624                 },
 625                 // Selects a list item and triggers the river-select event.
 626                 select: function( li, event ) {
 627                         var liHeight, elHeight, liTop, elTop;
 628
 629                         if ( li.hasClass( 'unselectable' ) || li == this.selected )
 630                                 return;
 631
 632                         this.deselect();
 633                         this.selected = li.addClass( 'selected' );
 634                         // Make sure the element is visible
 635                         liHeight = li.outerHeight();
 636                         elHeight = this.element.height();
 637                         liTop = li.position().top;
 638                         elTop = this.element.scrollTop();
 639
 640                         if ( liTop < 0 ) // Make first visible element
 641                                 this.element.scrollTop( elTop + liTop );
 642                         else if ( liTop + liHeight > elHeight ) // Make last visible element
 643                                 this.element.scrollTop( elTop + liTop - elHeight + liHeight );
 644
 645                         // Trigger the river-select event
 646                         this.element.trigger( 'river-select', [ li, event, this ] );
 647                 },
 648                 deselect: function() {
 649                         if ( this.selected )
 650                                 this.selected.removeClass( 'selected' );
 651                         this.selected = false;
 652                 },
 653                 prev: function() {
 654                         if ( ! this.visible )
 655                                 return;
 656
 657                         var to;
 658                         if ( this.selected ) {
 659                                 to = this.selected.prev( 'li' );
 660                                 if ( to.length )
 661                                         this.select( to );
 662                         }
 663                 },
 664                 next: function() {
 665                         if ( ! this.visible )
 666                                 return;
 667
 668                         var to = this.selected ? this.selected.next( 'li' ) : $( 'li:not(.unselectable):first', this.element );
 669                         if ( to.length )
 670                                 this.select( to );
 671                 },
 672                 ajax: function( callback ) {
 673                         var self = this,
 674                                 delay = this.query.page == 1 ? 0 : wpLink.minRiverAJAXDuration,
 675                                 response = wpLink.delayedCallback( function( results, params ) {
 676                                         self.process( results, params );
 677                                         if ( callback )
 678                                                 callback( results, params );
 679                                 }, delay );
 680
 681                         this.query.ajax( response );
 682                 },
 683                 change: function( search ) {
 684                         if ( this.query && this._search == search )
 685                                 return;
 686
 687                         this._search = search;
 688                         this.query = new Query( search );
 689                         this.element.scrollTop( 0 );
 690                 },
 691                 process: function( results, params ) {
 692                         var list = '', alt = true, classes = '',
 693                                 firstPage = params.page == 1;
 694
 695                         if ( ! results ) {
 696                                 if ( firstPage ) {
 697                                         list += '<li class="unselectable no-matches-found"><span class="item-title"><em>' +
 698                                                 wpLinkL10n.noMatchesFound + '</em></span></li>';
 699                                 }
 700                         } else {
 701                                 $.each( results, function() {
 702                                         classes = alt ? 'alternate' : '';
 703                                         classes += this.title ? '' : ' no-title';
 704                                         list += classes ? '<li class="' + classes + '">' : '<li>';
 705                                         list += '<input type="hidden" class="item-permalink" value="' + this.permalink + '" />';
 706                                         list += '<span class="item-title">';
 707                                         list += this.title ? this.title : wpLinkL10n.noTitle;
 708                                         list += '</span><span class="item-info">' + this.info + '</span></li>';
 709                                         alt = ! alt;
 710                                 });
 711                         }
 712
 713                         this.ul[ firstPage ? 'html' : 'append' ]( list );
 714                 },
 715                 maybeLoad: function() {
 716                         var self = this,
 717                                 el = this.element,
 718                                 bottom = el.scrollTop() + el.height();
 719
 720                         if ( ! this.query.ready() || bottom < this.contentHeight.height() - wpLink.riverBottomThreshold )
 721                                 return;
 722
 723                         setTimeout(function() {
 724                                 var newTop = el.scrollTop(),
 725                                         newBottom = newTop + el.height();
 726
 727                                 if ( ! self.query.ready() || newBottom < self.contentHeight.height() - wpLink.riverBottomThreshold )
 728                                         return;
 729
 730                                 self.waiting.addClass( 'is-active' );
 731                                 el.scrollTop( newTop + self.waiting.outerHeight() );
 732
 733                                 self.ajax( function() {
 734                                         self.waiting.removeClass( 'is-active' );
 735                                 });
 736                         }, wpLink.timeToTriggerRiver );
 737                 }
 738         });
 739
 740         Query = function( search ) {
 741                 this.page = 1;
 742                 this.allLoaded = false;
 743                 this.querying = false;
 744                 this.search = search;
 745         };
 746
 747         $.extend( Query.prototype, {
 748                 ready: function() {
 749                         return ! ( this.querying || this.allLoaded );
 750                 },
 751                 ajax: function( callback ) {
 752                         var self = this,
 753                                 query = {
 754                                         action : 'wp-link-ajax',
 755                                         page : this.page,
 756                                         '_ajax_linking_nonce' : inputs.nonce.val()
 757                                 };
 758
 759                         if ( this.search )
 760                                 query.search = this.search;
 761
 762                         this.querying = true;
 763
 764                         $.post( window.ajaxurl, query, function( r ) {
 765                                 self.page++;
 766                                 self.querying = false;
 767                                 self.allLoaded = ! r;
 768                                 callback( r, query );
 769                         }, 'json' );
 770                 }
 771         });
 772
 773         $( document ).ready( wpLink.init );
 774 })( jQuery, window.wpLinkL10n, window.wp );