wp-includes/js/wplink.js

   1 var wpLink;
   2
   3 (function($){
   4         var inputs = {}, rivers = {}, ed, River, Query;
   5
   6         wpLink = {
   7                 timeToTriggerRiver: 150,
   8                 minRiverAJAXDuration: 200,
   9                 riverBottomThreshold: 5,
  10                 keySensitivity: 100,
  11                 lastSearch: '',
  12                 textarea: '',
  13
  14                 init : function() {
  15                         inputs.dialog = $('#wp-link');
  16                         inputs.submit = $('#wp-link-submit');
  17                         // URL
  18                         inputs.url = $('#url-field');
  19                         inputs.nonce = $('#_ajax_linking_nonce');
  20                         // Secondary options
  21                         inputs.title = $('#link-title-field');
  22                         // Advanced Options
  23                         inputs.openInNewTab = $('#link-target-checkbox');
  24                         inputs.search = $('#search-field');
  25                         // Build Rivers
  26                         rivers.search = new River( $('#search-results') );
  27                         rivers.recent = new River( $('#most-recent-results') );
  28                         rivers.elements = $('.query-results', inputs.dialog);
  29
  30                         // Bind event handlers
  31                         inputs.dialog.keydown( wpLink.keydown );
  32                         inputs.dialog.keyup( wpLink.keyup );
  33                         inputs.submit.click( function(e){
  34                                 e.preventDefault();
  35                                 wpLink.update();
  36                         });
  37                         $('#wp-link-cancel').click( function(e){
  38                                 e.preventDefault();
  39                                 wpLink.close();
  40                         });
  41                         $('#internal-toggle').click( wpLink.toggleInternalLinking );
  42
  43                         rivers.elements.bind('river-select', wpLink.updateFields );
  44
  45                         inputs.search.keyup( wpLink.searchInternalLinks );
  46
  47                         inputs.dialog.bind('wpdialogrefresh', wpLink.refresh);
  48                         inputs.dialog.bind('wpdialogbeforeopen', wpLink.beforeOpen);
  49                         inputs.dialog.bind('wpdialogclose', wpLink.onClose);
  50                 },
  51
  52                 beforeOpen : function() {
  53                         wpLink.range = null;
  54
  55                         if ( ! wpLink.isMCE() && document.selection ) {
  56                                 wpLink.textarea.focus();
  57                                 wpLink.range = document.selection.createRange();
  58                         }
  59                 },
  60
  61                 open : function() {
  62                         if ( !wpActiveEditor )
  63                                 return;
  64
  65                         this.textarea = $('#'+wpActiveEditor).get(0);
  66
  67                         // Initialize the dialog if necessary (html mode).
  68                         if ( ! inputs.dialog.data('wpdialog') ) {
  69                                 inputs.dialog.wpdialog({
  70                                         title: wpLinkL10n.title,
  71                                         width: 480,
  72                                         height: 'auto',
  73                                         modal: true,
  74                                         dialogClass: 'wp-dialog',
  75                                         zIndex: 300000
  76                                 });
  77                         }
  78
  79                         inputs.dialog.wpdialog('open');
  80                 },
  81
  82                 isMCE : function() {
  83                         return tinyMCEPopup && ( ed = tinyMCEPopup.editor ) && ! ed.isHidden();
  84                 },
  85
  86                 refresh : function() {
  87                         // Refresh rivers (clear links, check visibility)
  88                         rivers.search.refresh();
  89                         rivers.recent.refresh();
  90
  91                         if ( wpLink.isMCE() )
  92                                 wpLink.mceRefresh();
  93                         else
  94                                 wpLink.setDefaultValues();
  95
  96                         // Focus the URL field and highlight its contents.
  97                         //     If this is moved above the selection changes,
  98                         //     IE will show a flashing cursor over the dialog.
  99                         inputs.url.focus()[0].select();
 100                         // Load the most recent results if this is the first time opening the panel.
 101                         if ( ! rivers.recent.ul.children().length )
 102                                 rivers.recent.ajax();
 103                 },
 104
 105                 mceRefresh : function() {
 106                         var e;
 107                         ed = tinyMCEPopup.editor;
 108
 109                         tinyMCEPopup.restoreSelection();
 110
 111                         // If link exists, select proper values.
 112                         if ( e = ed.dom.getParent(ed.selection.getNode(), 'A') ) {
 113                                 // Set URL and description.
 114                                 inputs.url.val( ed.dom.getAttrib(e, 'href') );
 115                                 inputs.title.val( ed.dom.getAttrib(e, 'title') );
 116                                 // Set open in new tab.
 117                                 if ( "_blank" == ed.dom.getAttrib(e, 'target') )
 118                                         inputs.openInNewTab.prop('checked', true);
 119                                 // Update save prompt.
 120                                 inputs.submit.val( wpLinkL10n.update );
 121
 122                         // If there's no link, set the default values.
 123                         } else {
 124                                 wpLink.setDefaultValues();
 125                         }
 126
 127                         tinyMCEPopup.storeSelection();
 128                 },
 129
 130                 close : function() {
 131                         if ( wpLink.isMCE() )
 132                                 tinyMCEPopup.close();
 133                         else
 134                                 inputs.dialog.wpdialog('close');
 135                 },
 136
 137                 onClose: function() {
 138                         if ( ! wpLink.isMCE() ) {
 139                                 wpLink.textarea.focus();
 140                                 if ( wpLink.range ) {
 141                                         wpLink.range.moveToBookmark( wpLink.range.getBookmark() );
 142                                         wpLink.range.select();
 143                                 }
 144                         }
 145                 },
 146
 147                 getAttrs : function() {
 148                         return {
 149                                 href : inputs.url.val(),
 150                                 title : inputs.title.val(),
 151                                 target : inputs.openInNewTab.prop('checked') ? '_blank' : ''
 152                         };
 153                 },
 154
 155                 update : function() {
 156                         if ( wpLink.isMCE() )
 157                                 wpLink.mceUpdate();
 158                         else
 159                                 wpLink.htmlUpdate();
 160                 },
 161
 162                 htmlUpdate : function() {
 163                         var attrs, html, begin, end, cursor,
 164                                 textarea = wpLink.textarea;
 165
 166                         if ( ! textarea )
 167                                 return;
 168
 169                         attrs = wpLink.getAttrs();
 170
 171                         // If there's no href, return.
 172                         if ( ! attrs.href || attrs.href == 'http://' )
 173                                 return;
 174
 175                         // Build HTML
 176                         html = '<a href="' + attrs.href + '"';
 177
 178                         if ( attrs.title )
 179                                 html += ' title="' + attrs.title + '"';
 180                         if ( attrs.target )
 181                                 html += ' target="' + attrs.target + '"';
 182
 183                         html += '>';
 184
 185                         // Insert HTML
 186                         if ( document.selection && wpLink.range ) {
 187                                 // IE
 188                                 // Note: If no text is selected, IE will not place the cursor
 189                                 //       inside the closing tag.
 190                                 textarea.focus();
 191                                 wpLink.range.text = html + wpLink.range.text + '</a>';
 192                                 wpLink.range.moveToBookmark( wpLink.range.getBookmark() );
 193                                 wpLink.range.select();
 194
 195                                 wpLink.range = null;
 196                         } else if ( typeof textarea.selectionStart !== 'undefined' ) {
 197                                 // W3C
 198                                 begin       = textarea.selectionStart;
 199                                 end         = textarea.selectionEnd;
 200                                 selection   = textarea.value.substring( begin, end );
 201                                 html        = html + selection + '</a>';
 202                                 cursor      = begin + html.length;
 203
 204                                 // If no next is selected, place the cursor inside the closing tag.
 205                                 if ( begin == end )
 206                                         cursor -= '</a>'.length;
 207
 208                                 textarea.value = textarea.value.substring( 0, begin )
 209                                                + html
 210                                                + textarea.value.substring( end, textarea.value.length );
 211
 212                                 // Update cursor position
 213                                 textarea.selectionStart = textarea.selectionEnd = cursor;
 214                         }
 215
 216                         wpLink.close();
 217                         textarea.focus();
 218                 },
 219
 220                 mceUpdate : function() {
 221                         var ed = tinyMCEPopup.editor,
 222                                 attrs = wpLink.getAttrs(),
 223                                 e, b;
 224
 225                         tinyMCEPopup.restoreSelection();
 226                         e = ed.dom.getParent(ed.selection.getNode(), 'A');
 227
 228                         // If the values are empty, unlink and return
 229                         if ( ! attrs.href || attrs.href == 'http://' ) {
 230                                 if ( e ) {
 231                                         tinyMCEPopup.execCommand("mceBeginUndoLevel");
 232                                         b = ed.selection.getBookmark();
 233                                         ed.dom.remove(e, 1);
 234                                         ed.selection.moveToBookmark(b);
 235                                         tinyMCEPopup.execCommand("mceEndUndoLevel");
 236                                         wpLink.close();
 237                                 }
 238                                 return;
 239                         }
 240
 241                         tinyMCEPopup.execCommand("mceBeginUndoLevel");
 242
 243                         if (e == null) {
 244                                 ed.getDoc().execCommand("unlink", false, null);
 245                                 tinyMCEPopup.execCommand("mceInsertLink", false, "#mce_temp_url#", {skip_undo : 1});
 246
 247                                 tinymce.each(ed.dom.select("a"), function(n) {
 248                                         if (ed.dom.getAttrib(n, 'href') == '#mce_temp_url#') {
 249                                                 e = n;
 250                                                 ed.dom.setAttribs(e, attrs);
 251                                         }
 252                                 });
 253
 254                                 // Sometimes WebKit lets a user create a link where
 255                                 // they shouldn't be able to. In this case, CreateLink
 256                                 // injects "#mce_temp_url#" into their content. Fix it.
 257                                 if ( $(e).text() == '#mce_temp_url#' ) {
 258                                         ed.dom.remove(e);
 259                                         e = null;
 260                                 }
 261                         } else {
 262                                 ed.dom.setAttribs(e, attrs);
 263                         }
 264
 265                         // Don't move caret if selection was image
 266                         if ( e && (e.childNodes.length != 1 || e.firstChild.nodeName != 'IMG') ) {
 267                                 ed.focus();
 268                                 ed.selection.select(e);
 269                                 ed.selection.collapse(0);
 270                                 tinyMCEPopup.storeSelection();
 271                         }
 272
 273                         tinyMCEPopup.execCommand("mceEndUndoLevel");
 274                         wpLink.close();
 275                 },
 276
 277                 updateFields : function( e, li, originalEvent ) {
 278                         inputs.url.val( li.children('.item-permalink').val() );
 279                         inputs.title.val( li.hasClass('no-title') ? '' : li.children('.item-title').text() );
 280                         if ( originalEvent && originalEvent.type == "click" )
 281                                 inputs.url.focus();
 282                 },
 283                 setDefaultValues : function() {
 284                         // Set URL and description to defaults.
 285                         // Leave the new tab setting as-is.
 286                         inputs.url.val('http://');
 287                         inputs.title.val('');
 288
 289                         // Update save prompt.
 290                         inputs.submit.val( wpLinkL10n.save );
 291                 },
 292
 293                 searchInternalLinks : function() {
 294                         var t = $(this), waiting,
 295                                 search = t.val();
 296
 297                         if ( search.length > 2 ) {
 298                                 rivers.recent.hide();
 299                                 rivers.search.show();
 300
 301                                 // Don't search if the keypress didn't change the title.
 302                                 if ( wpLink.lastSearch == search )
 303                                         return;
 304
 305                                 wpLink.lastSearch = search;
 306                                 waiting = t.parent().find('.spinner').show();
 307
 308                                 rivers.search.change( search );
 309                                 rivers.search.ajax( function(){ waiting.hide(); });
 310                         } else {
 311                                 rivers.search.hide();
 312                                 rivers.recent.show();
 313                         }
 314                 },
 315
 316                 next : function() {
 317                         rivers.search.next();
 318                         rivers.recent.next();
 319                 },
 320                 prev : function() {
 321                         rivers.search.prev();
 322                         rivers.recent.prev();
 323                 },
 324
 325                 keydown : function( event ) {
 326                         var fn, key = $.ui.keyCode;
 327
 328                         switch( event.which ) {
 329                                 case key.UP:
 330                                         fn = 'prev';
 331                                 case key.DOWN:
 332                                         fn = fn || 'next';
 333                                         clearInterval( wpLink.keyInterval );
 334                                         wpLink[ fn ]();
 335                                         wpLink.keyInterval = setInterval( wpLink[ fn ], wpLink.keySensitivity );
 336                                         break;
 337                                 default:
 338                                         return;
 339                         }
 340                         event.preventDefault();
 341                 },
 342                 keyup: function( event ) {
 343                         var key = $.ui.keyCode;
 344
 345                         switch( event.which ) {
 346                                 case key.ESCAPE:
 347                                         event.stopImmediatePropagation();
 348                                         if ( ! $(document).triggerHandler( 'wp_CloseOnEscape', [{ event: event, what: 'wplink', cb: wpLink.close }] ) )
 349                                                 wpLink.close();
 350
 351                                         return false;
 352                                         break;
 353                                 case key.UP:
 354                                 case key.DOWN:
 355                                         clearInterval( wpLink.keyInterval );
 356                                         break;
 357                                 default:
 358                                         return;
 359                         }
 360                         event.preventDefault();
 361                 },
 362
 363                 delayedCallback : function( func, delay ) {
 364                         var timeoutTriggered, funcTriggered, funcArgs, funcContext;
 365
 366                         if ( ! delay )
 367                                 return func;
 368
 369                         setTimeout( function() {
 370                                 if ( funcTriggered )
 371                                         return func.apply( funcContext, funcArgs );
 372                                 // Otherwise, wait.
 373                                 timeoutTriggered = true;
 374                         }, delay);
 375
 376                         return function() {
 377                                 if ( timeoutTriggered )
 378                                         return func.apply( this, arguments );
 379                                 // Otherwise, wait.
 380                                 funcArgs = arguments;
 381                                 funcContext = this;
 382                                 funcTriggered = true;
 383                         };
 384                 },
 385
 386                 toggleInternalLinking : function( event ) {
 387                         var panel = $('#search-panel'),
 388                                 widget = inputs.dialog.wpdialog('widget'),
 389                                 // We're about to toggle visibility; it's currently the opposite
 390                                 visible = !panel.is(':visible'),
 391                                 win = $(window);
 392
 393                         $(this).toggleClass('toggle-arrow-active', visible);
 394
 395                         inputs.dialog.height('auto');
 396                         panel.slideToggle( 300, function() {
 397                                 setUserSetting('wplink', visible ? '1' : '0');
 398                                 inputs[ visible ? 'search' : 'url' ].focus();
 399
 400                                 // Move the box if the box is now expanded, was opened in a collapsed state,
 401                                 // and if it needs to be moved. (Judged by bottom not being positive or
 402                                 // bottom being smaller than top.)
 403                                 var scroll = win.scrollTop(),
 404                                         top = widget.offset().top,
 405                                         bottom = top + widget.outerHeight(),
 406                                         diff = bottom - win.height();
 407
 408                                 if ( diff > scroll ) {
 409                                         widget.animate({'top': diff < top ?  top - diff : scroll }, 200);
 410                                 }
 411                         });
 412                         event.preventDefault();
 413                 }
 414         }
 415
 416         River = function( element, search ) {
 417                 var self = this;
 418                 this.element = element;
 419                 this.ul = element.children('ul');
 420                 this.waiting = element.find('.river-waiting');
 421
 422                 this.change( search );
 423                 this.refresh();
 424
 425                 element.scroll( function(){ self.maybeLoad(); });
 426                 element.delegate('li', 'click', function(e){ self.select( $(this), e ); });
 427         };
 428
 429         $.extend( River.prototype, {
 430                 refresh: function() {
 431                         this.deselect();
 432                         this.visible = this.element.is(':visible');
 433                 },
 434                 show: function() {
 435                         if ( ! this.visible ) {
 436                                 this.deselect();
 437                                 this.element.show();
 438                                 this.visible = true;
 439                         }
 440                 },
 441                 hide: function() {
 442                         this.element.hide();
 443                         this.visible = false;
 444                 },
 445                 // Selects a list item and triggers the river-select event.
 446                 select: function( li, event ) {
 447                         var liHeight, elHeight, liTop, elTop;
 448
 449                         if ( li.hasClass('unselectable') || li == this.selected )
 450                                 return;
 451
 452                         this.deselect();
 453                         this.selected = li.addClass('selected');
 454                         // Make sure the element is visible
 455                         liHeight = li.outerHeight();
 456                         elHeight = this.element.height();
 457                         liTop = li.position().top;
 458                         elTop = this.element.scrollTop();
 459
 460                         if ( liTop < 0 ) // Make first visible element
 461                                 this.element.scrollTop( elTop + liTop );
 462                         else if ( liTop + liHeight > elHeight ) // Make last visible element
 463                                 this.element.scrollTop( elTop + liTop - elHeight + liHeight );
 464
 465                         // Trigger the river-select event
 466                         this.element.trigger('river-select', [ li, event, this ]);
 467                 },
 468                 deselect: function() {
 469                         if ( this.selected )
 470                                 this.selected.removeClass('selected');
 471                         this.selected = false;
 472                 },
 473                 prev: function() {
 474                         if ( ! this.visible )
 475                                 return;
 476
 477                         var to;
 478                         if ( this.selected ) {
 479                                 to = this.selected.prev('li');
 480                                 if ( to.length )
 481                                         this.select( to );
 482                         }
 483                 },
 484                 next: function() {
 485                         if ( ! this.visible )
 486                                 return;
 487
 488                         var to = this.selected ? this.selected.next('li') : $('li:not(.unselectable):first', this.element);
 489                         if ( to.length )
 490                                 this.select( to );
 491                 },
 492                 ajax: function( callback ) {
 493                         var self = this,
 494                                 delay = this.query.page == 1 ? 0 : wpLink.minRiverAJAXDuration,
 495                                 response = wpLink.delayedCallback( function( results, params ) {
 496                                         self.process( results, params );
 497                                         if ( callback )
 498                                                 callback( results, params );
 499                                 }, delay );
 500
 501                         this.query.ajax( response );
 502                 },
 503                 change: function( search ) {
 504                         if ( this.query && this._search == search )
 505                                 return;
 506
 507                         this._search = search;
 508                         this.query = new Query( search );
 509                         this.element.scrollTop(0);
 510                 },
 511                 process: function( results, params ) {
 512                         var list = '', alt = true, classes = '',
 513                                 firstPage = params.page == 1;
 514
 515                         if ( !results ) {
 516                                 if ( firstPage ) {
 517                                         list += '<li class="unselectable"><span class="item-title"><em>'
 518                                         + wpLinkL10n.noMatchesFound
 519                                         + '</em></span></li>';
 520                                 }
 521                         } else {
 522                                 $.each( results, function() {
 523                                         classes = alt ? 'alternate' : '';
 524                                         classes += this['title'] ? '' : ' no-title';
 525                                         list += classes ? '<li class="' + classes + '">' : '<li>';
 526                                         list += '<input type="hidden" class="item-permalink" value="' + this['permalink'] + '" />';
 527                                         list += '<span class="item-title">';
 528                                         list += this['title'] ? this['title'] : wpLinkL10n.noTitle;
 529                                         list += '</span><span class="item-info">' + this['info'] + '</span></li>';
 530                                         alt = ! alt;
 531                                 });
 532                         }
 533
 534                         this.ul[ firstPage ? 'html' : 'append' ]( list );
 535                 },
 536                 maybeLoad: function() {
 537                         var self = this,
 538                                 el = this.element,
 539                                 bottom = el.scrollTop() + el.height();
 540
 541                         if ( ! this.query.ready() || bottom < this.ul.height() - wpLink.riverBottomThreshold )
 542                                 return;
 543
 544                         setTimeout(function() {
 545                                 var newTop = el.scrollTop(),
 546                                         newBottom = newTop + el.height();
 547
 548                                 if ( ! self.query.ready() || newBottom < self.ul.height() - wpLink.riverBottomThreshold )
 549                                         return;
 550
 551                                 self.waiting.show();
 552                                 el.scrollTop( newTop + self.waiting.outerHeight() );
 553
 554                                 self.ajax( function() { self.waiting.hide(); });
 555                         }, wpLink.timeToTriggerRiver );
 556                 }
 557         });
 558
 559         Query = function( search ) {
 560                 this.page = 1;
 561                 this.allLoaded = false;
 562                 this.querying = false;
 563                 this.search = search;
 564         };
 565
 566         $.extend( Query.prototype, {
 567                 ready: function() {
 568                         return !( this.querying || this.allLoaded );
 569                 },
 570                 ajax: function( callback ) {
 571                         var self = this,
 572                                 query = {
 573                                         action : 'wp-link-ajax',
 574                                         page : this.page,
 575                                         '_ajax_linking_nonce' : inputs.nonce.val()
 576                                 };
 577
 578                         if ( this.search )
 579                                 query.search = this.search;
 580
 581                         this.querying = true;
 582
 583                         $.post( ajaxurl, query, function(r) {
 584                                 self.page++;
 585                                 self.querying = false;
 586                                 self.allLoaded = !r;
 587                                 callback( r, query );
 588                         }, "json" );
 589                 }
 590         });
 591
 592         $(document).ready( wpLink.init );
 593 })(jQuery);