BookStack Code Mirror - bookstack/blob - resources/assets/js/directives.js

   1 "use strict";
   2 import DropZone from "dropzone";
   3 import markdown from "marked";
   4
   5 export default function (ngApp, events) {
   6
   7     /**
   8      * Common tab controls using simple jQuery functions.
   9      */
  10     ngApp.directive('tabContainer', function() {
  11         return {
  12             restrict: 'A',
  13             link: function (scope, element, attrs) {
  14                 const $content = element.find('[tab-content]');
  15                 const $buttons = element.find('[tab-button]');
  16
  17                 if (attrs.tabContainer) {
  18                     let initial = attrs.tabContainer;
  19                     $buttons.filter(`[tab-button="${initial}"]`).addClass('selected');
  20                     $content.hide().filter(`[tab-content="${initial}"]`).show();
  21                 } else {
  22                     $content.hide().first().show();
  23                     $buttons.first().addClass('selected');
  24                 }
  25
  26                 $buttons.click(function() {
  27                     let clickedTab = $(this);
  28                     $buttons.removeClass('selected');
  29                     $content.hide();
  30                     let name = clickedTab.addClass('selected').attr('tab-button');
  31                     $content.filter(`[tab-content="${name}"]`).show();
  32                 });
  33             }
  34         };
  35     });
  36
  37     /**
  38      * Sub form component to allow inner-form sections to act like their own forms.
  39      */
  40     ngApp.directive('subForm', function() {
  41         return {
  42             restrict: 'A',
  43             link: function (scope, element, attrs) {
  44                 element.on('keypress', e => {
  45                     if (e.keyCode === 13) {
  46                         submitEvent(e);
  47                     }
  48                 });
  49
  50                 element.find('button[type="submit"]').click(submitEvent);
  51
  52                 function submitEvent(e) {
  53                     e.preventDefault();
  54                     if (attrs.subForm) scope.$eval(attrs.subForm);
  55                 }
  56             }
  57         };
  58     });
  59
  60     /**
  61      * DropZone
  62      * Used for uploading images
  63      */
  64     ngApp.directive('dropZone', [function () {
  65         return {
  66             restrict: 'E',
  67             template: `
  68             <div class="dropzone-container">
  69                 <div class="dz-message">{{message}}</div>
  70             </div>
  71             `,
  72             scope: {
  73                 uploadUrl: '@',
  74                 eventSuccess: '=',
  75                 eventError: '=',
  76                 uploadedTo: '@',
  77             },
  78             link: function (scope, element, attrs) {
  79                 scope.message = attrs.message;
  80                 if (attrs.placeholder) element[0].querySelector('.dz-message').textContent = attrs.placeholder;
  81                 let dropZone = new DropZone(element[0].querySelector('.dropzone-container'), {
  82                     url: scope.uploadUrl,
  83                     init: function () {
  84                         let dz = this;
  85                         dz.on('sending', function (file, xhr, data) {
  86                             let token = window.document.querySelector('meta[name=token]').getAttribute('content');
  87                             data.append('_token', token);
  88                             let uploadedTo = typeof scope.uploadedTo === 'undefined' ? 0 : scope.uploadedTo;
  89                             data.append('uploaded_to', uploadedTo);
  90                         });
  91                         if (typeof scope.eventSuccess !== 'undefined') dz.on('success', scope.eventSuccess);
  92                         dz.on('success', function (file, data) {
  93                             $(file.previewElement).fadeOut(400, function () {
  94                                 dz.removeFile(file);
  95                             });
  96                         });
  97                         if (typeof scope.eventError !== 'undefined') dz.on('error', scope.eventError);
  98                         dz.on('error', function (file, errorMessage, xhr) {
  99                             console.log(errorMessage);
 100                             console.log(xhr);
 101                             function setMessage(message) {
 102                                 $(file.previewElement).find('[data-dz-errormessage]').text(message);
 103                             }
 104
 105                             if (xhr.status === 413) setMessage('The server does not allow uploads of this size. Please try a smaller file.');
 106                             if (errorMessage.file) setMessage(errorMessage.file[0]);
 107
 108                         });
 109                     }
 110                 });
 111             }
 112         };
 113     }]);
 114
 115     /**
 116      * Dropdown
 117      * Provides some simple logic to create small dropdown menus
 118      */
 119     ngApp.directive('dropdown', [function () {
 120         return {
 121             restrict: 'A',
 122             link: function (scope, element, attrs) {
 123                 const menu = element.find('ul');
 124                 element.find('[dropdown-toggle]').on('click', function () {
 125                     menu.show().addClass('anim menuIn');
 126                     let inputs = menu.find('input');
 127                     let hasInput = inputs.length > 0;
 128                     if (hasInput) {
 129                         inputs.first().focus();
 130                         element.on('keypress', 'input', event => {
 131                             if (event.keyCode === 13) {
 132                                 event.preventDefault();
 133                                 menu.hide();
 134                                 menu.removeClass('anim menuIn');
 135                                 return false;
 136                             }
 137                         });
 138                     }
 139                     element.mouseleave(function () {
 140                         menu.hide();
 141                         menu.removeClass('anim menuIn');
 142                     });
 143                 });
 144             }
 145         };
 146     }]);
 147
 148     /**
 149      * TinyMCE
 150      * An angular wrapper around the tinyMCE editor.
 151      */
 152     ngApp.directive('tinymce', ['$timeout', function ($timeout) {
 153         return {
 154             restrict: 'A',
 155             scope: {
 156                 tinymce: '=',
 157                 mceModel: '=',
 158                 mceChange: '='
 159             },
 160             link: function (scope, element, attrs) {
 161
 162                 function tinyMceSetup(editor) {
 163                     editor.on('ExecCommand change NodeChange ObjectResized', (e) => {
 164                         let content = editor.getContent();
 165                         $timeout(() => {
 166                             scope.mceModel = content;
 167                         });
 168                         scope.mceChange(content);
 169                     });
 170
 171                     editor.on('keydown', (event) => {
 172                         scope.$emit('editor-keydown', event);
 173                     });
 174
 175                     editor.on('init', (e) => {
 176                         scope.mceModel = editor.getContent();
 177                     });
 178
 179                     scope.$on('html-update', (event, value) => {
 180                         editor.setContent(value);
 181                         editor.selection.select(editor.getBody(), true);
 182                         editor.selection.collapse(false);
 183                         scope.mceModel = editor.getContent();
 184                     });
 185                 }
 186
 187                 scope.tinymce.extraSetups.push(tinyMceSetup);
 188
 189                 // Custom tinyMCE plugins
 190                 tinymce.PluginManager.add('customhr', function (editor) {
 191                     editor.addCommand('InsertHorizontalRule', function () {
 192                         let hrElem = document.createElement('hr');
 193                         let cNode = editor.selection.getNode();
 194                         let parentNode = cNode.parentNode;
 195                         parentNode.insertBefore(hrElem, cNode);
 196                     });
 197
 198                     editor.addButton('hr', {
 199                         icon: 'hr',
 200                         tooltip: 'Horizontal line',
 201                         cmd: 'InsertHorizontalRule'
 202                     });
 203
 204                     editor.addMenuItem('hr', {
 205                         icon: 'hr',
 206                         text: 'Horizontal line',
 207                         cmd: 'InsertHorizontalRule',
 208                         context: 'insert'
 209                     });
 210                 });
 211
 212                 tinymce.init(scope.tinymce);
 213             }
 214         }
 215     }]);
 216
 217     /**
 218      * Markdown input
 219      * Handles the logic for just the editor input field.
 220      */
 221     ngApp.directive('markdownInput', ['$timeout', function ($timeout) {
 222         return {
 223             restrict: 'A',
 224             scope: {
 225                 mdModel: '=',
 226                 mdChange: '='
 227             },
 228             link: function (scope, element, attrs) {
 229
 230                 // Set initial model content
 231                 element = element.find('textarea').first();
 232                 let content = element.val();
 233                 scope.mdModel = content;
 234                 scope.mdChange(markdown(content));
 235
 236                 element.on('change input', (event) => {
 237                     content = element.val();
 238                     $timeout(() => {
 239                         scope.mdModel = content;
 240                         scope.mdChange(markdown(content));
 241                     });
 242                 });
 243
 244                 scope.$on('markdown-update', (event, value) => {
 245                     element.val(value);
 246                     scope.mdModel = value;
 247                     scope.mdChange(markdown(value));
 248                 });
 249
 250             }
 251         }
 252     }]);
 253
 254     /**
 255      * Markdown Editor
 256      * Handles all functionality of the markdown editor.
 257      */
 258     ngApp.directive('markdownEditor', ['$timeout', function ($timeout) {
 259         return {
 260             restrict: 'A',
 261             link: function (scope, element, attrs) {
 262
 263                 // Elements
 264                 const input = element.find('[markdown-input] textarea').first();
 265                 const display = element.find('.markdown-display').first();
 266                 const insertImage = element.find('button[data-action="insertImage"]');
 267                 const insertEntityLink = element.find('button[data-action="insertEntityLink"]')
 268
 269                 let currentCaretPos = 0;
 270
 271                 input.blur(event => {
 272                     currentCaretPos = input[0].selectionStart;
 273                 });
 274
 275                 // Scroll sync
 276                 let inputScrollHeight,
 277                     inputHeight,
 278                     displayScrollHeight,
 279                     displayHeight;
 280
 281                 function setScrollHeights() {
 282                     inputScrollHeight = input[0].scrollHeight;
 283                     inputHeight = input.height();
 284                     displayScrollHeight = display[0].scrollHeight;
 285                     displayHeight = display.height();
 286                 }
 287
 288                 setTimeout(() => {
 289                     setScrollHeights();
 290                 }, 200);
 291                 window.addEventListener('resize', setScrollHeights);
 292                 let scrollDebounceTime = 800;
 293                 let lastScroll = 0;
 294                 input.on('scroll', event => {
 295                     let now = Date.now();
 296                     if (now - lastScroll > scrollDebounceTime) {
 297                         setScrollHeights()
 298                     }
 299                     let scrollPercent = (input.scrollTop() / (inputScrollHeight - inputHeight));
 300                     let displayScrollY = (displayScrollHeight - displayHeight) * scrollPercent;
 301                     display.scrollTop(displayScrollY);
 302                     lastScroll = now;
 303                 });
 304
 305                 // Editor key-presses
 306                 input.keydown(event => {
 307                     // Insert image shortcut
 308                     if (event.which === 73 && event.ctrlKey && event.shiftKey) {
 309                         event.preventDefault();
 310                         let caretPos = input[0].selectionStart;
 311                         let currentContent = input.val();
 312                         const mdImageText = "![](http://)";
 313                         input.val(currentContent.substring(0, caretPos) + mdImageText + currentContent.substring(caretPos));
 314                         input.focus();
 315                         input[0].selectionStart = caretPos + ("![](".length);
 316                         input[0].selectionEnd = caretPos + ('![](http://'.length);
 317                         return;
 318                     }
 319
 320                     // Insert entity link shortcut
 321                     if (event.which === 75 && event.ctrlKey && event.shiftKey) {
 322                         showLinkSelector();
 323                         return;
 324                     }
 325
 326                     // Pass key presses to controller via event
 327                     scope.$emit('editor-keydown', event);
 328                 });
 329
 330                 // Insert image from image manager
 331                 insertImage.click(event => {
 332                     window.ImageManager.showExternal(image => {
 333                         let caretPos = currentCaretPos;
 334                         let currentContent = input.val();
 335                         let mdImageText = "![" + image.name + "](" + image.thumbs.display + ")";
 336                         input.val(currentContent.substring(0, caretPos) + mdImageText + currentContent.substring(caretPos));
 337                         input.change();
 338                     });
 339                 });
 340
 341                 function showLinkSelector() {
 342                     window.showEntityLinkSelector((entity) => {
 343                         let selectionStart = currentCaretPos;
 344                         let selectionEnd = input[0].selectionEnd;
 345                         let textSelected = (selectionEnd !== selectionStart);
 346                         let currentContent = input.val();
 347
 348                         if (textSelected) {
 349                             let selectedText = currentContent.substring(selectionStart, selectionEnd);
 350                             let linkText = `[${selectedText}](${entity.link})`;
 351                             input.val(currentContent.substring(0, selectionStart) + linkText + currentContent.substring(selectionEnd));
 352                         } else {
 353                             let linkText = ` [${entity.name}](${entity.link}) `;
 354                             input.val(currentContent.substring(0, selectionStart) + linkText + currentContent.substring(selectionStart))
 355                         }
 356                         input.change();
 357                     });
 358                 }
 359                 insertEntityLink.click(showLinkSelector);
 360
 361                 // Upload and insert image on paste
 362                 function editorPaste(e) {
 363                     e = e.originalEvent;
 364                     if (!e.clipboardData) return
 365                     let items = e.clipboardData.items;
 366                     if (!items) return;
 367                     for (let i = 0; i < items.length; i++) {
 368                         uploadImage(items[i].getAsFile());
 369                     }
 370                 }
 371
 372                 input.on('paste', editorPaste);
 373
 374                 // Handle image drop, Uploads images to BookStack.
 375                 function handleImageDrop(event) {
 376                     event.stopPropagation();
 377                     event.preventDefault();
 378                     let files = event.originalEvent.dataTransfer.files;
 379                     for (let i = 0; i < files.length; i++) {
 380                         uploadImage(files[i]);
 381                     }
 382                 }
 383
 384                 input.on('drop', handleImageDrop);
 385
 386                 // Handle image upload and add image into markdown content
 387                 function uploadImage(file) {
 388                     if (file.type.indexOf('image') !== 0) return;
 389                     let formData = new FormData();
 390                     let ext = 'png';
 391                     let xhr = new XMLHttpRequest();
 392
 393                     if (file.name) {
 394                         let fileNameMatches = file.name.match(/\.(.+)$/);
 395                         if (fileNameMatches) {
 396                             ext = fileNameMatches[1];
 397                         }
 398                     }
 399
 400                     // Insert image into markdown
 401                     let id = "image-" + Math.random().toString(16).slice(2);
 402                     let selectStart = input[0].selectionStart;
 403                     let selectEnd = input[0].selectionEnd;
 404                     let content = input[0].value;
 405                     let selectText = content.substring(selectStart, selectEnd);
 406                     let placeholderImage = window.baseUrl(`/loading.gif#upload${id}`);
 407                     let innerContent = ((selectEnd > selectStart) ? `![${selectText}]` : '![]') + `(${placeholderImage})`;
 408                     input[0].value = content.substring(0, selectStart) +  innerContent + content.substring(selectEnd);
 409
 410                     input.focus();
 411                     input[0].selectionStart = selectStart;
 412                     input[0].selectionEnd = selectStart;
 413
 414                     let remoteFilename = "image-" + Date.now() + "." + ext;
 415                     formData.append('file', file, remoteFilename);
 416                     formData.append('_token', document.querySelector('meta[name="token"]').getAttribute('content'));
 417
 418                     xhr.open('POST', window.baseUrl('/images/gallery/upload'));
 419                     xhr.onload = function () {
 420                         let selectStart = input[0].selectionStart;
 421                         if (xhr.status === 200 || xhr.status === 201) {
 422                             let result = JSON.parse(xhr.responseText);
 423                             input[0].value = input[0].value.replace(placeholderImage, result.thumbs.display);
 424                             input.change();
 425                         } else {
 426                             console.log('An error occurred uploading the image');
 427                             console.log(xhr.responseText);
 428                             input[0].value = input[0].value.replace(innerContent, '');
 429                             input.change();
 430                         }
 431                         input.focus();
 432                         input[0].selectionStart = selectStart;
 433                         input[0].selectionEnd = selectStart;
 434                     };
 435                     xhr.send(formData);
 436                 }
 437
 438             }
 439         }
 440     }]);
 441
 442     /**
 443      * Page Editor Toolbox
 444      * Controls all functionality for the sliding toolbox
 445      * on the page edit view.
 446      */
 447     ngApp.directive('toolbox', [function () {
 448         return {
 449             restrict: 'A',
 450             link: function (scope, elem, attrs) {
 451
 452                 // Get common elements
 453                 const $buttons = elem.find('[toolbox-tab-button]');
 454                 const $content = elem.find('[toolbox-tab-content]');
 455                 const $toggle = elem.find('[toolbox-toggle]');
 456
 457                 // Handle toolbox toggle click
 458                 $toggle.click((e) => {
 459                     elem.toggleClass('open');
 460                 });
 461
 462                 // Set an active tab/content by name
 463                 function setActive(tabName, openToolbox) {
 464                     $buttons.removeClass('active');
 465                     $content.hide();
 466                     $buttons.filter(`[toolbox-tab-button="${tabName}"]`).addClass('active');
 467                     $content.filter(`[toolbox-tab-content="${tabName}"]`).show();
 468                     if (openToolbox) elem.addClass('open');
 469                 }
 470
 471                 // Set the first tab content active on load
 472                 setActive($content.first().attr('toolbox-tab-content'), false);
 473
 474                 // Handle tab button click
 475                 $buttons.click(function (e) {
 476                     let name = $(this).attr('toolbox-tab-button');
 477                     setActive(name, true);
 478                 });
 479             }
 480         }
 481     }]);
 482
 483     /**
 484      * Tag Autosuggestions
 485      * Listens to child inputs and provides autosuggestions depending on field type
 486      * and input. Suggestions provided by server.
 487      */
 488     ngApp.directive('tagAutosuggestions', ['$http', function ($http) {
 489         return {
 490             restrict: 'A',
 491             link: function (scope, elem, attrs) {
 492
 493                 // Local storage for quick caching.
 494                 const localCache = {};
 495
 496                 // Create suggestion element
 497                 const suggestionBox = document.createElement('ul');
 498                 suggestionBox.className = 'suggestion-box';
 499                 suggestionBox.style.position = 'absolute';
 500                 suggestionBox.style.display = 'none';
 501                 const $suggestionBox = $(suggestionBox);
 502
 503                 // General state tracking
 504                 let isShowing = false;
 505                 let currentInput = false;
 506                 let active = 0;
 507
 508                 // Listen to input events on autosuggest fields
 509                 elem.on('input focus', '[autosuggest]', function (event) {
 510                     let $input = $(this);
 511                     let val = $input.val();
 512                     let url = $input.attr('autosuggest');
 513                     let type = $input.attr('autosuggest-type');
 514
 515                     // Add name param to request if for a value
 516                     if (type.toLowerCase() === 'value') {
 517                         let $nameInput = $input.closest('tr').find('[autosuggest-type="name"]').first();
 518                         let nameVal = $nameInput.val();
 519                         if (nameVal !== '') {
 520                             url += '?name=' + encodeURIComponent(nameVal);
 521                         }
 522                     }
 523
 524                     let suggestionPromise = getSuggestions(val.slice(0, 3), url);
 525                     suggestionPromise.then(suggestions => {
 526                         if (val.length === 0) {
 527                             displaySuggestions($input, suggestions.slice(0, 6));
 528                         } else  {
 529                             suggestions = suggestions.filter(item => {
 530                                 return item.toLowerCase().indexOf(val.toLowerCase()) !== -1;
 531                             }).slice(0, 4);
 532                             displaySuggestions($input, suggestions);
 533                         }
 534                     });
 535                 });
 536
 537                 // Hide autosuggestions when input loses focus.
 538                 // Slight delay to allow clicks.
 539                 let lastFocusTime = 0;
 540                 elem.on('blur', '[autosuggest]', function (event) {
 541                     let startTime = Date.now();
 542                     setTimeout(() => {
 543                         if (lastFocusTime < startTime) {
 544                             $suggestionBox.hide();
 545                             isShowing = false;
 546                         }
 547                     }, 200)
 548                 });
 549                 elem.on('focus', '[autosuggest]', function (event) {
 550                     lastFocusTime = Date.now();
 551                 });
 552
 553                 elem.on('keydown', '[autosuggest]', function (event) {
 554                     if (!isShowing) return;
 555
 556                     let suggestionElems = suggestionBox.childNodes;
 557                     let suggestCount = suggestionElems.length;
 558
 559                     // Down arrow
 560                     if (event.keyCode === 40) {
 561                         let newActive = (active === suggestCount - 1) ? 0 : active + 1;
 562                         changeActiveTo(newActive, suggestionElems);
 563                     }
 564                     // Up arrow
 565                     else if (event.keyCode === 38) {
 566                         let newActive = (active === 0) ? suggestCount - 1 : active - 1;
 567                         changeActiveTo(newActive, suggestionElems);
 568                     }
 569                     // Enter or tab key
 570                     else if ((event.keyCode === 13 || event.keyCode === 9) && !event.shiftKey) {
 571                         let text = suggestionElems[active].textContent;
 572                         currentInput[0].value = text;
 573                         currentInput.focus();
 574                         $suggestionBox.hide();
 575                         isShowing = false;
 576                         if (event.keyCode === 13) {
 577                             event.preventDefault();
 578                             return false;
 579                         }
 580                     }
 581                 });
 582
 583                 // Change the active suggestion to the given index
 584                 function changeActiveTo(index, suggestionElems) {
 585                     suggestionElems[active].className = '';
 586                     active = index;
 587                     suggestionElems[active].className = 'active';
 588                 }
 589
 590                 // Display suggestions on a field
 591                 let prevSuggestions = [];
 592
 593                 function displaySuggestions($input, suggestions) {
 594
 595                     // Hide if no suggestions
 596                     if (suggestions.length === 0) {
 597                         $suggestionBox.hide();
 598                         isShowing = false;
 599                         prevSuggestions = suggestions;
 600                         return;
 601                     }
 602
 603                     // Otherwise show and attach to input
 604                     if (!isShowing) {
 605                         $suggestionBox.show();
 606                         isShowing = true;
 607                     }
 608                     if ($input !== currentInput) {
 609                         $suggestionBox.detach();
 610                         $input.after($suggestionBox);
 611                         currentInput = $input;
 612                     }
 613
 614                     // Return if no change
 615                     if (prevSuggestions.join() === suggestions.join()) {
 616                         prevSuggestions = suggestions;
 617                         return;
 618                     }
 619
 620                     // Build suggestions
 621                     $suggestionBox[0].innerHTML = '';
 622                     for (let i = 0; i < suggestions.length; i++) {
 623                         let suggestion = document.createElement('li');
 624                         suggestion.textContent = suggestions[i];
 625                         suggestion.onclick = suggestionClick;
 626                         if (i === 0) {
 627                             suggestion.className = 'active';
 628                             active = 0;
 629                         }
 630                         $suggestionBox[0].appendChild(suggestion);
 631                     }
 632
 633                     prevSuggestions = suggestions;
 634                 }
 635
 636                 // Suggestion click event
 637                 function suggestionClick(event) {
 638                     currentInput[0].value = this.textContent;
 639                     currentInput.focus();
 640                     $suggestionBox.hide();
 641                     isShowing = false;
 642                 }
 643
 644                 // Get suggestions & cache
 645                 function getSuggestions(input, url) {
 646                     let hasQuery = url.indexOf('?') !== -1;
 647                     let searchUrl = url + (hasQuery ? '&' : '?') + 'search=' + encodeURIComponent(input);
 648
 649                     // Get from local cache if exists
 650                     if (typeof localCache[searchUrl] !== 'undefined') {
 651                         return new Promise((resolve, reject) => {
 652                             resolve(localCache[searchUrl]);
 653                         });
 654                     }
 655
 656                     return $http.get(searchUrl).then(response => {
 657                         localCache[searchUrl] = response.data;
 658                         return response.data;
 659                     });
 660                 }
 661
 662             }
 663         }
 664     }]);
 665
 666     ngApp.directive('entityLinkSelector', [function($http) {
 667         return {
 668             restict: 'A',
 669             link: function(scope, element, attrs) {
 670
 671                 const selectButton = element.find('.entity-link-selector-confirm');
 672                 let callback = false;
 673                 let entitySelection = null;
 674
 675                 // Handle entity selection change, Stores the selected entity locally
 676                 function entitySelectionChange(entity) {
 677                     entitySelection = entity;
 678                     if (entity === null) {
 679                         selectButton.attr('disabled', 'true');
 680                     } else {
 681                         selectButton.removeAttr('disabled');
 682                     }
 683                 }
 684                 events.listen('entity-select-change', entitySelectionChange);
 685
 686                 // Handle selection confirm button click
 687                 selectButton.click(event => {
 688                     hide();
 689                     if (entitySelection !== null) callback(entitySelection);
 690                 });
 691
 692                 // Show selector interface
 693                 function show() {
 694                     element.fadeIn(240);
 695                 }
 696
 697                 // Hide selector interface
 698                 function hide() {
 699                     element.fadeOut(240);
 700                 }
 701
 702                 // Listen to confirmation of entity selections (doubleclick)
 703                 events.listen('entity-select-confirm', entity => {
 704                     hide();
 705                     callback(entity);
 706                 });
 707
 708                 // Show entity selector, Accessible globally, and store the callback
 709                 window.showEntityLinkSelector = function(passedCallback) {
 710                     show();
 711                     callback = passedCallback;
 712                 };
 713
 714             }
 715         };
 716     }]);
 717
 718
 719     ngApp.directive('entitySelector', ['$http', '$sce', function ($http, $sce) {
 720         return {
 721             restrict: 'A',
 722             scope: true,
 723             link: function (scope, element, attrs) {
 724                 scope.loading = true;
 725                 scope.entityResults = false;
 726                 scope.search = '';
 727
 728                 // Add input for forms
 729                 const input = element.find('[entity-selector-input]').first();
 730
 731                 // Detect double click events
 732                 let lastClick = 0;
 733                 function isDoubleClick() {
 734                     let now = Date.now();
 735                     let answer = now - lastClick < 300;
 736                     lastClick = now;
 737                     return answer;
 738                 }
 739
 740                 // Listen to entity item clicks
 741                 element.on('click', '.entity-list a', function(event) {
 742                     event.preventDefault();
 743                     event.stopPropagation();
 744                     let item = $(this).closest('[data-entity-type]');
 745                     itemSelect(item, isDoubleClick());
 746                 });
 747                 element.on('click', '[data-entity-type]', function(event) {
 748                     itemSelect($(this), isDoubleClick());
 749                 });
 750
 751                 // Select entity action
 752                 function itemSelect(item, doubleClick) {
 753                     let entityType = item.attr('data-entity-type');
 754                     let entityId = item.attr('data-entity-id');
 755                     let isSelected = !item.hasClass('selected') || doubleClick;
 756                     element.find('.selected').removeClass('selected').removeClass('primary-background');
 757                     if (isSelected) item.addClass('selected').addClass('primary-background');
 758                     let newVal = isSelected ? `${entityType}:${entityId}` : '';
 759                     input.val(newVal);
 760
 761                     if (!isSelected) {
 762                         events.emit('entity-select-change', null);
 763                     }
 764
 765                     if (!doubleClick && !isSelected) return;
 766
 767                     let link = item.find('.entity-list-item-link').attr('href');
 768                     let name = item.find('.entity-list-item-name').text();
 769
 770                     if (doubleClick) {
 771                         events.emit('entity-select-confirm', {
 772                             id: Number(entityId),
 773                             name: name,
 774                             link: link
 775                         });
 776                     }
 777
 778                     if (isSelected) {
 779                         events.emit('entity-select-change', {
 780                             id: Number(entityId),
 781                             name: name,
 782                             link: link
 783                         });
 784                     }
 785                 }
 786
 787                 // Get search url with correct types
 788                 function getSearchUrl() {
 789                     let types = (attrs.entityTypes) ? encodeURIComponent(attrs.entityTypes) : encodeURIComponent('page,book,chapter');
 790                     return window.baseUrl(`/ajax/search/entities?types=${types}`);
 791                 }
 792
 793                 // Get initial contents
 794                 $http.get(getSearchUrl()).then(resp => {
 795                     scope.entityResults = $sce.trustAsHtml(resp.data);
 796                     scope.loading = false;
 797                 });
 798
 799                 // Search when typing
 800                 scope.searchEntities = function() {
 801                     scope.loading = true;
 802                     input.val('');
 803                     let url = getSearchUrl() + '&term=' + encodeURIComponent(scope.search);
 804                     $http.get(url).then(resp => {
 805                         scope.entityResults = $sce.trustAsHtml(resp.data);
 806                         scope.loading = false;
 807                     });
 808                 };
 809             }
 810         };
 811     }]);
 812 };