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