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

   1 "use strict";
   2 const DropZone = require('dropzone');
   3 const markdown = require('marked');
   4
   5 const toggleSwitchTemplate = require('./components/toggle-switch.html');
   6 const imagePickerTemplate = require('./components/image-picker.html');
   7 const dropZoneTemplate = require('./components/drop-zone.html');
   8
   9 module.exports = function (ngApp, events) {
  10
  11     /**
  12      * Toggle Switches
  13      * Has basic on/off functionality.
  14      * Use string values of 'true' & 'false' to dictate the current state.
  15      */
  16     ngApp.directive('toggleSwitch', function () {
  17         return {
  18             restrict: 'A',
  19             template: toggleSwitchTemplate,
  20             scope: true,
  21             link: function (scope, element, attrs) {
  22                 scope.name = attrs.name;
  23                 scope.value = attrs.value;
  24                 scope.isActive = scope.value == true && scope.value != 'false';
  25                 scope.value = (scope.value == true && scope.value != 'false') ? 'true' : 'false';
  26
  27                 scope.switch = function () {
  28                     scope.isActive = !scope.isActive;
  29                     scope.value = scope.isActive ? 'true' : 'false';
  30                 }
  31
  32             }
  33         };
  34     });
  35
  36
  37     /**
  38      * Image Picker
  39      * Is a simple front-end interface that connects to an ImageManager if present.
  40      */
  41     ngApp.directive('imagePicker', ['$http', 'imageManagerService', function ($http, imageManagerService) {
  42         return {
  43             restrict: 'E',
  44             template: imagePickerTemplate,
  45             scope: {
  46                 name: '@',
  47                 resizeHeight: '@',
  48                 resizeWidth: '@',
  49                 resizeCrop: '@',
  50                 showRemove: '=',
  51                 currentImage: '@',
  52                 currentId: '@',
  53                 defaultImage: '@',
  54                 imageClass: '@'
  55             },
  56             link: function (scope, element, attrs) {
  57                 let usingIds = typeof scope.currentId !== 'undefined' || scope.currentId === 'false';
  58                 scope.image = scope.currentImage;
  59                 scope.value = scope.currentImage || '';
  60                 if (usingIds) scope.value = scope.currentId;
  61
  62                 function setImage(imageModel, imageUrl) {
  63                     scope.image = imageUrl;
  64                     scope.value = usingIds ? imageModel.id : imageUrl;
  65                 }
  66
  67                 scope.reset = function () {
  68                     setImage({id: 0}, scope.defaultImage);
  69                 };
  70
  71                 scope.remove = function () {
  72                     scope.image = 'none';
  73                     scope.value = 'none';
  74                 };
  75
  76                 scope.showImageManager = function () {
  77                     imageManagerService.show((image) => {
  78                         scope.updateImageFromModel(image);
  79                     });
  80                 };
  81
  82                 scope.updateImageFromModel = function (model) {
  83                     let isResized = scope.resizeWidth && scope.resizeHeight;
  84
  85                     if (!isResized) {
  86                         scope.$apply(() => {
  87                             setImage(model, model.url);
  88                         });
  89                         return;
  90                     }
  91
  92                     let cropped = scope.resizeCrop ? 'true' : 'false';
  93                     let requestString = '/images/thumb/' + model.id + '/' + scope.resizeWidth + '/' + scope.resizeHeight + '/' + cropped;
  94                     requestString = window.baseUrl(requestString);
  95                     $http.get(requestString).then((response) => {
  96                         setImage(model, response.data.url);
  97                     });
  98                 };
  99
 100             }
 101         };
 102     }]);
 103
 104     /**
 105      * DropZone
 106      * Used for uploading images
 107      */
 108     ngApp.directive('dropZone', [function () {
 109         return {
 110             restrict: 'E',
 111             template: dropZoneTemplate,
 112             scope: {
 113                 uploadUrl: '@',
 114                 eventSuccess: '=',
 115                 eventError: '=',
 116                 uploadedTo: '@'
 117             },
 118             link: function (scope, element, attrs) {
 119                 if (attrs.placeholder) element[0].querySelector('.dz-message').textContent = attrs.placeholder;
 120                 var dropZone = new DropZone(element[0].querySelector('.dropzone-container'), {
 121                     url: scope.uploadUrl,
 122                     init: function () {
 123                         var dz = this;
 124                         dz.on('sending', function (file, xhr, data) {
 125                             var token = window.document.querySelector('meta[name=token]').getAttribute('content');
 126                             data.append('_token', token);
 127                             var uploadedTo = typeof scope.uploadedTo === 'undefined' ? 0 : scope.uploadedTo;
 128                             data.append('uploaded_to', uploadedTo);
 129                         });
 130                         if (typeof scope.eventSuccess !== 'undefined') dz.on('success', scope.eventSuccess);
 131                         dz.on('success', function (file, data) {
 132                             $(file.previewElement).fadeOut(400, function () {
 133                                 dz.removeFile(file);
 134                             });
 135                         });
 136                         if (typeof scope.eventError !== 'undefined') dz.on('error', scope.eventError);
 137                         dz.on('error', function (file, errorMessage, xhr) {
 138                             console.log(errorMessage);
 139                             console.log(xhr);
 140                             function setMessage(message) {
 141                                 $(file.previewElement).find('[data-dz-errormessage]').text(message);
 142                             }
 143
 144                             if (xhr.status === 413) setMessage('The server does not allow uploads of this size. Please try a smaller file.');
 145                             if (errorMessage.file) setMessage(errorMessage.file[0]);
 146
 147                         });
 148                     }
 149                 });
 150             }
 151         };
 152     }]);
 153
 154     /**
 155      * Dropdown
 156      * Provides some simple logic to create small dropdown menus
 157      */
 158     ngApp.directive('dropdown', [function () {
 159         return {
 160             restrict: 'A',
 161             link: function (scope, element, attrs) {
 162                 const menu = element.find('ul');
 163                 element.find('[dropdown-toggle]').on('click', function () {
 164                     menu.show().addClass('anim menuIn');
 165                     let inputs = menu.find('input');
 166                     let hasInput = inputs.length > 0;
 167                     if (hasInput) {
 168                         inputs.first().focus();
 169                         element.on('keypress', 'input', event => {
 170                             if (event.keyCode === 13) {
 171                                 event.preventDefault();
 172                                 menu.hide();
 173                                 menu.removeClass('anim menuIn');
 174                                 return false;
 175                             }
 176                         });
 177                     }
 178                     element.mouseleave(function () {
 179                         menu.hide();
 180                         menu.removeClass('anim menuIn');
 181                     });
 182                 });
 183             }
 184         };
 185     }]);
 186
 187     /**
 188      * TinyMCE
 189      * An angular wrapper around the tinyMCE editor.
 190      */
 191     ngApp.directive('tinymce', ['$timeout', function ($timeout) {
 192         return {
 193             restrict: 'A',
 194             scope: {
 195                 tinymce: '=',
 196                 mceModel: '=',
 197                 mceChange: '='
 198             },
 199             link: function (scope, element, attrs) {
 200
 201                 function tinyMceSetup(editor) {
 202                     editor.on('ExecCommand change NodeChange ObjectResized', (e) => {
 203                         var content = editor.getContent();
 204                         $timeout(() => {
 205                             scope.mceModel = content;
 206                         });
 207                         scope.mceChange(content);
 208                     });
 209
 210                     editor.on('keydown', (event) => {
 211                         scope.$emit('editor-keydown', event);
 212                     });
 213
 214                     editor.on('init', (e) => {
 215                         scope.mceModel = editor.getContent();
 216                     });
 217
 218                     scope.$on('html-update', (event, value) => {
 219                         editor.setContent(value);
 220                         editor.selection.select(editor.getBody(), true);
 221                         editor.selection.collapse(false);
 222                         scope.mceModel = editor.getContent();
 223                     });
 224                 }
 225
 226                 scope.tinymce.extraSetups.push(tinyMceSetup);
 227
 228                 // Custom tinyMCE plugins
 229                 tinymce.PluginManager.add('customhr', function (editor) {
 230                     editor.addCommand('InsertHorizontalRule', function () {
 231                         var hrElem = document.createElement('hr');
 232                         var cNode = editor.selection.getNode();
 233                         var parentNode = cNode.parentNode;
 234                         parentNode.insertBefore(hrElem, cNode);
 235                     });
 236
 237                     editor.addButton('hr', {
 238                         icon: 'hr',
 239                         tooltip: 'Horizontal line',
 240                         cmd: 'InsertHorizontalRule'
 241                     });
 242
 243                     editor.addMenuItem('hr', {
 244                         icon: 'hr',
 245                         text: 'Horizontal line',
 246                         cmd: 'InsertHorizontalRule',
 247                         context: 'insert'
 248                     });
 249                 });
 250
 251                 tinymce.init(scope.tinymce);
 252             }
 253         }
 254     }]);
 255
 256     /**
 257      * Markdown input
 258      * Handles the logic for just the editor input field.
 259      */
 260     ngApp.directive('markdownInput', ['$timeout', function ($timeout) {
 261         return {
 262             restrict: 'A',
 263             scope: {
 264                 mdModel: '=',
 265                 mdChange: '='
 266             },
 267             link: function (scope, element, attrs) {
 268
 269                 // Set initial model content
 270                 element = element.find('textarea').first();
 271                 let content = element.val();
 272                 scope.mdModel = content;
 273                 scope.mdChange(markdown(content));
 274
 275                 element.on('change input', (event) => {
 276                     content = element.val();
 277                     $timeout(() => {
 278                         scope.mdModel = content;
 279                         scope.mdChange(markdown(content));
 280                     });
 281                 });
 282
 283                 scope.$on('markdown-update', (event, value) => {
 284                     element.val(value);
 285                     scope.mdModel = value;
 286                     scope.mdChange(markdown(value));
 287                 });
 288
 289             }
 290         }
 291     }]);
 292
 293     /**
 294      * Markdown Editor
 295      * Handles all functionality of the markdown editor.
 296      */
 297     ngApp.directive('markdownEditor', ['$timeout', function ($timeout) {
 298         return {
 299             restrict: 'A',
 300             link: function (scope, element, attrs) {
 301
 302                 // Elements
 303                 const input = element.find('[markdown-input] textarea').first();
 304                 const display = element.find('.markdown-display').first();
 305                 const insertImage = element.find('button[data-action="insertImage"]');
 306                 const insertEntityLink = element.find('button[data-action="insertEntityLink"]')
 307
 308                 let currentCaretPos = 0;
 309
 310                 input.blur(event => {
 311                     currentCaretPos = input[0].selectionStart;
 312                 });
 313
 314                 // Scroll sync
 315                 let inputScrollHeight,
 316                     inputHeight,
 317                     displayScrollHeight,
 318                     displayHeight;
 319
 320                 function setScrollHeights() {
 321                     inputScrollHeight = input[0].scrollHeight;
 322                     inputHeight = input.height();
 323                     displayScrollHeight = display[0].scrollHeight;
 324                     displayHeight = display.height();
 325                 }
 326
 327                 setTimeout(() => {
 328                     setScrollHeights();
 329                 }, 200);
 330                 window.addEventListener('resize', setScrollHeights);
 331                 let scrollDebounceTime = 800;
 332                 let lastScroll = 0;
 333                 input.on('scroll', event => {
 334                     let now = Date.now();
 335                     if (now - lastScroll > scrollDebounceTime) {
 336                         setScrollHeights()
 337                     }
 338                     let scrollPercent = (input.scrollTop() / (inputScrollHeight - inputHeight));
 339                     let displayScrollY = (displayScrollHeight - displayHeight) * scrollPercent;
 340                     display.scrollTop(displayScrollY);
 341                     lastScroll = now;
 342                 });
 343
 344                 // Editor key-presses
 345                 input.keydown(event => {
 346                     // Insert image shortcut
 347                     if (event.which === 73 && event.ctrlKey && event.shiftKey) {
 348                         event.preventDefault();
 349                         let caretPos = input[0].selectionStart;
 350                         let currentContent = input.val();
 351                         const mdImageText = "![](http://)";
 352                         input.val(currentContent.substring(0, caretPos) + mdImageText + currentContent.substring(caretPos));
 353                         input.focus();
 354                         input[0].selectionStart = caretPos + ("![](".length);
 355                         input[0].selectionEnd = caretPos + ('![](http://'.length);
 356                         return;
 357                     }
 358
 359                     // Insert entity link shortcut
 360                     if (event.which === 75 && event.ctrlKey && event.shiftKey) {
 361                         showLinkSelector();
 362                         return;
 363                     }
 364
 365                     // Pass key presses to controller via event
 366                     scope.$emit('editor-keydown', event);
 367                 });
 368
 369                 // Insert image from image manager
 370                 insertImage.click(event => {
 371                     window.ImageManager.showExternal(image => {
 372                         let caretPos = currentCaretPos;
 373                         let currentContent = input.val();
 374                         let mdImageText = "![" + image.name + "](" + image.thumbs.display + ")";
 375                         input.val(currentContent.substring(0, caretPos) + mdImageText + currentContent.substring(caretPos));
 376                         input.change();
 377                     });
 378                 });
 379
 380                 function showLinkSelector() {
 381                     window.showEntityLinkSelector((entity) => {
 382                         let selectionStart = currentCaretPos;
 383                         let selectionEnd = input[0].selectionEnd;
 384                         let textSelected = (selectionEnd !== selectionStart);
 385                         let currentContent = input.val();
 386
 387                         if (textSelected) {
 388                             let selectedText = currentContent.substring(selectionStart, selectionEnd);
 389                             let linkText = `[${selectedText}](${entity.link})`;
 390                             input.val(currentContent.substring(0, selectionStart) + linkText + currentContent.substring(selectionEnd));
 391                         } else {
 392                             let linkText = ` [${entity.name}](${entity.link}) `;
 393                             input.val(currentContent.substring(0, selectionStart) + linkText + currentContent.substring(selectionStart))
 394                         }
 395                         input.change();
 396                     });
 397                 }
 398                 insertEntityLink.click(showLinkSelector);
 399
 400                 // Upload and insert image on paste
 401                 function editorPaste(e) {
 402                     e = e.originalEvent;
 403                     if (!e.clipboardData) return
 404                     var items = e.clipboardData.items;
 405                     if (!items) return;
 406                     for (var i = 0; i < items.length; i++) {
 407                         uploadImage(items[i].getAsFile());
 408                     }
 409                 }
 410
 411                 input.on('paste', editorPaste);
 412
 413                 // Handle image drop, Uploads images to BookStack.
 414                 function handleImageDrop(event) {
 415                     event.stopPropagation();
 416                     event.preventDefault();
 417                     let files = event.originalEvent.dataTransfer.files;
 418                     for (let i = 0; i < files.length; i++) {
 419                         uploadImage(files[i]);
 420                     }
 421                 }
 422
 423                 input.on('drop', handleImageDrop);
 424
 425                 // Handle image upload and add image into markdown content
 426                 function uploadImage(file) {
 427                     if (file.type.indexOf('image') !== 0) return;
 428                     var formData = new FormData();
 429                     var ext = 'png';
 430                     var xhr = new XMLHttpRequest();
 431
 432                     if (file.name) {
 433                         var fileNameMatches = file.name.match(/\.(.+)$/);
 434                         if (fileNameMatches) {
 435                             ext = fileNameMatches[1];
 436                         }
 437                     }
 438
 439                     // Insert image into markdown
 440                     let id = "image-" + Math.random().toString(16).slice(2);
 441                     let selectStart = input[0].selectionStart;
 442                     let selectEnd = input[0].selectionEnd;
 443                     let content = input[0].value;
 444                     let selectText = content.substring(selectStart, selectEnd);
 445                     let placeholderImage = window.baseUrl(`/loading.gif#upload${id}`);
 446                     let innerContent = ((selectEnd > selectStart) ? `![${selectText}]` : '![]') + `(${placeholderImage})`;
 447                     input[0].value = content.substring(0, selectStart) +  innerContent + content.substring(selectEnd);
 448
 449                     input.focus();
 450                     input[0].selectionStart = selectStart;
 451                     input[0].selectionEnd = selectStart;
 452
 453                     let remoteFilename = "image-" + Date.now() + "." + ext;
 454                     formData.append('file', file, remoteFilename);
 455                     formData.append('_token', document.querySelector('meta[name="token"]').getAttribute('content'));
 456
 457                     xhr.open('POST', window.baseUrl('/images/gallery/upload'));
 458                     xhr.onload = function () {
 459                         let selectStart = input[0].selectionStart;
 460                         if (xhr.status === 200 || xhr.status === 201) {
 461                             var result = JSON.parse(xhr.responseText);
 462                             input[0].value = input[0].value.replace(placeholderImage, result.thumbs.display);
 463                             input.change();
 464                         } else {
 465                             console.log('An error occurred uploading the image');
 466                             console.log(xhr.responseText);
 467                             input[0].value = input[0].value.replace(innerContent, '');
 468                             input.change();
 469                         }
 470                         input.focus();
 471                         input[0].selectionStart = selectStart;
 472                         input[0].selectionEnd = selectStart;
 473                     };
 474                     xhr.send(formData);
 475                 }
 476
 477             }
 478         }
 479     }]);
 480
 481     /**
 482      * Page Editor Toolbox
 483      * Controls all functionality for the sliding toolbox
 484      * on the page edit view.
 485      */
 486     ngApp.directive('toolbox', [function () {
 487         return {
 488             restrict: 'A',
 489             link: function (scope, elem, attrs) {
 490
 491                 // Get common elements
 492                 const $buttons = elem.find('[tab-button]');
 493                 const $content = elem.find('[tab-content]');
 494                 const $toggle = elem.find('[toolbox-toggle]');
 495
 496                 // Handle toolbox toggle click
 497                 $toggle.click((e) => {
 498                     elem.toggleClass('open');
 499                 });
 500
 501                 // Set an active tab/content by name
 502                 function setActive(tabName, openToolbox) {
 503                     $buttons.removeClass('active');
 504                     $content.hide();
 505                     $buttons.filter(`[tab-button="${tabName}"]`).addClass('active');
 506                     $content.filter(`[tab-content="${tabName}"]`).show();
 507                     if (openToolbox) elem.addClass('open');
 508                 }
 509
 510                 // Set the first tab content active on load
 511                 setActive($content.first().attr('tab-content'), false);
 512
 513                 // Handle tab button click
 514                 $buttons.click(function (e) {
 515                     let name = $(this).attr('tab-button');
 516                     setActive(name, true);
 517                 });
 518             }
 519         }
 520     }]);
 521
 522     /**
 523      * Tag Autosuggestions
 524      * Listens to child inputs and provides autosuggestions depending on field type
 525      * and input. Suggestions provided by server.
 526      */
 527     ngApp.directive('tagAutosuggestions', ['$http', function ($http) {
 528         return {
 529             restrict: 'A',
 530             link: function (scope, elem, attrs) {
 531
 532                 // Local storage for quick caching.
 533                 const localCache = {};
 534
 535                 // Create suggestion element
 536                 const suggestionBox = document.createElement('ul');
 537                 suggestionBox.className = 'suggestion-box';
 538                 suggestionBox.style.position = 'absolute';
 539                 suggestionBox.style.display = 'none';
 540                 const $suggestionBox = $(suggestionBox);
 541
 542                 // General state tracking
 543                 let isShowing = false;
 544                 let currentInput = false;
 545                 let active = 0;
 546
 547                 // Listen to input events on autosuggest fields
 548                 elem.on('input focus', '[autosuggest]', function (event) {
 549                     let $input = $(this);
 550                     let val = $input.val();
 551                     let url = $input.attr('autosuggest');
 552                     let type = $input.attr('autosuggest-type');
 553
 554                     // Add name param to request if for a value
 555                     if (type.toLowerCase() === 'value') {
 556                         let $nameInput = $input.closest('tr').find('[autosuggest-type="name"]').first();
 557                         let nameVal = $nameInput.val();
 558                         if (nameVal !== '') {
 559                             url += '?name=' + encodeURIComponent(nameVal);
 560                         }
 561                     }
 562
 563                     let suggestionPromise = getSuggestions(val.slice(0, 3), url);
 564                     suggestionPromise.then(suggestions => {
 565                         if (val.length === 0) {
 566                             displaySuggestions($input, suggestions.slice(0, 6));
 567                         } else  {
 568                             suggestions = suggestions.filter(item => {
 569                                 return item.toLowerCase().indexOf(val.toLowerCase()) !== -1;
 570                             }).slice(0, 4);
 571                             displaySuggestions($input, suggestions);
 572                         }
 573                     });
 574                 });
 575
 576                 // Hide autosuggestions when input loses focus.
 577                 // Slight delay to allow clicks.
 578                 let lastFocusTime = 0;
 579                 elem.on('blur', '[autosuggest]', function (event) {
 580                     let startTime = Date.now();
 581                     setTimeout(() => {
 582                         if (lastFocusTime < startTime) {
 583                             $suggestionBox.hide();
 584                             isShowing = false;
 585                         }
 586                     }, 200)
 587                 });
 588                 elem.on('focus', '[autosuggest]', function (event) {
 589                     lastFocusTime = Date.now();
 590                 });
 591
 592                 elem.on('keydown', '[autosuggest]', function (event) {
 593                     if (!isShowing) return;
 594
 595                     let suggestionElems = suggestionBox.childNodes;
 596                     let suggestCount = suggestionElems.length;
 597
 598                     // Down arrow
 599                     if (event.keyCode === 40) {
 600                         let newActive = (active === suggestCount - 1) ? 0 : active + 1;
 601                         changeActiveTo(newActive, suggestionElems);
 602                     }
 603                     // Up arrow
 604                     else if (event.keyCode === 38) {
 605                         let newActive = (active === 0) ? suggestCount - 1 : active - 1;
 606                         changeActiveTo(newActive, suggestionElems);
 607                     }
 608                     // Enter or tab key
 609                     else if ((event.keyCode === 13 || event.keyCode === 9) && !event.shiftKey) {
 610                         let text = suggestionElems[active].textContent;
 611                         currentInput[0].value = text;
 612                         currentInput.focus();
 613                         $suggestionBox.hide();
 614                         isShowing = false;
 615                         if (event.keyCode === 13) {
 616                             event.preventDefault();
 617                             return false;
 618                         }
 619                     }
 620                 });
 621
 622                 // Change the active suggestion to the given index
 623                 function changeActiveTo(index, suggestionElems) {
 624                     suggestionElems[active].className = '';
 625                     active = index;
 626                     suggestionElems[active].className = 'active';
 627                 }
 628
 629                 // Display suggestions on a field
 630                 let prevSuggestions = [];
 631
 632                 function displaySuggestions($input, suggestions) {
 633
 634                     // Hide if no suggestions
 635                     if (suggestions.length === 0) {
 636                         $suggestionBox.hide();
 637                         isShowing = false;
 638                         prevSuggestions = suggestions;
 639                         return;
 640                     }
 641
 642                     // Otherwise show and attach to input
 643                     if (!isShowing) {
 644                         $suggestionBox.show();
 645                         isShowing = true;
 646                     }
 647                     if ($input !== currentInput) {
 648                         $suggestionBox.detach();
 649                         $input.after($suggestionBox);
 650                         currentInput = $input;
 651                     }
 652
 653                     // Return if no change
 654                     if (prevSuggestions.join() === suggestions.join()) {
 655                         prevSuggestions = suggestions;
 656                         return;
 657                     }
 658
 659                     // Build suggestions
 660                     $suggestionBox[0].innerHTML = '';
 661                     for (let i = 0; i < suggestions.length; i++) {
 662                         var suggestion = document.createElement('li');
 663                         suggestion.textContent = suggestions[i];
 664                         suggestion.onclick = suggestionClick;
 665                         if (i === 0) {
 666                             suggestion.className = 'active'
 667                             active = 0;
 668                         }
 669                         ;
 670                         $suggestionBox[0].appendChild(suggestion);
 671                     }
 672
 673                     prevSuggestions = suggestions;
 674                 }
 675
 676                 // Suggestion click event
 677                 function suggestionClick(event) {
 678                     let text = this.textContent;
 679                     currentInput[0].value = text;
 680                     currentInput.focus();
 681                     $suggestionBox.hide();
 682                     isShowing = false;
 683                 };
 684
 685                 // Get suggestions & cache
 686                 function getSuggestions(input, url) {
 687                     let hasQuery = url.indexOf('?') !== -1;
 688                     let searchUrl = url + (hasQuery ? '&' : '?') + 'search=' + encodeURIComponent(input);
 689
 690                     // Get from local cache if exists
 691                     if (typeof localCache[searchUrl] !== 'undefined') {
 692                         return new Promise((resolve, reject) => {
 693                             resolve(localCache[searchUrl]);
 694                         });
 695                     }
 696
 697                     return $http.get(searchUrl).then(response => {
 698                         localCache[searchUrl] = response.data;
 699                         return response.data;
 700                     });
 701                 }
 702
 703             }
 704         }
 705     }]);
 706
 707     ngApp.directive('entityLinkSelector', [function($http) {
 708         return {
 709             restict: 'A',
 710             link: function(scope, element, attrs) {
 711
 712                 const selectButton = element.find('.entity-link-selector-confirm');
 713                 let callback = false;
 714                 let entitySelection = null;
 715
 716                 // Handle entity selection change, Stores the selected entity locally
 717                 function entitySelectionChange(entity) {
 718                     entitySelection = entity;
 719                     if (entity === null) {
 720                         selectButton.attr('disabled', 'true');
 721                     } else {
 722                         selectButton.removeAttr('disabled');
 723                     }
 724                 }
 725                 events.listen('entity-select-change', entitySelectionChange);
 726
 727                 // Handle selection confirm button click
 728                 selectButton.click(event => {
 729                     hide();
 730                     if (entitySelection !== null) callback(entitySelection);
 731                 });
 732
 733                 // Show selector interface
 734                 function show() {
 735                     element.fadeIn(240);
 736                 }
 737
 738                 // Hide selector interface
 739                 function hide() {
 740                     element.fadeOut(240);
 741                 }
 742
 743                 // Listen to confirmation of entity selections (doubleclick)
 744                 events.listen('entity-select-confirm', entity => {
 745                     hide();
 746                     callback(entity);
 747                 });
 748
 749                 // Show entity selector, Accessible globally, and store the callback
 750                 window.showEntityLinkSelector = function(passedCallback) {
 751                     show();
 752                     callback = passedCallback;
 753                 };
 754
 755             }
 756         };
 757     }]);
 758
 759
 760     ngApp.directive('entitySelector', ['$http', '$sce', function ($http, $sce) {
 761         return {
 762             restrict: 'A',
 763             scope: true,
 764             link: function (scope, element, attrs) {
 765                 scope.loading = true;
 766                 scope.entityResults = false;
 767                 scope.search = '';
 768
 769                 // Add input for forms
 770                 const input = element.find('[entity-selector-input]').first();
 771
 772                 // Detect double click events
 773                 var lastClick = 0;
 774                 function isDoubleClick() {
 775                     let now = Date.now();
 776                     let answer = now - lastClick < 300;
 777                     lastClick = now;
 778                     return answer;
 779                 }
 780
 781                 // Listen to entity item clicks
 782                 element.on('click', '.entity-list a', function(event) {
 783                     event.preventDefault();
 784                     event.stopPropagation();
 785                     let item = $(this).closest('[data-entity-type]');
 786                     itemSelect(item, isDoubleClick());
 787                 });
 788                 element.on('click', '[data-entity-type]', function(event) {
 789                     itemSelect($(this), isDoubleClick());
 790                 });
 791
 792                 // Select entity action
 793                 function itemSelect(item, doubleClick) {
 794                     let entityType = item.attr('data-entity-type');
 795                     let entityId = item.attr('data-entity-id');
 796                     let isSelected = !item.hasClass('selected') || doubleClick;
 797                     element.find('.selected').removeClass('selected').removeClass('primary-background');
 798                     if (isSelected) item.addClass('selected').addClass('primary-background');
 799                     let newVal = isSelected ? `${entityType}:${entityId}` : '';
 800                     input.val(newVal);
 801
 802                     if (!isSelected) {
 803                         events.emit('entity-select-change', null);
 804                     }
 805
 806                     if (!doubleClick && !isSelected) return;
 807
 808                     let link = item.find('.entity-list-item-link').attr('href');
 809                     let name = item.find('.entity-list-item-name').text();
 810
 811                     if (doubleClick) {
 812                         events.emit('entity-select-confirm', {
 813                             id: Number(entityId),
 814                             name: name,
 815                             link: link
 816                         });
 817                     }
 818
 819                     if (isSelected) {
 820                         events.emit('entity-select-change', {
 821                             id: Number(entityId),
 822                             name: name,
 823                             link: link
 824                         });
 825                     }
 826                 }
 827
 828                 // Get search url with correct types
 829                 function getSearchUrl() {
 830                     let types = (attrs.entityTypes) ? encodeURIComponent(attrs.entityTypes) : encodeURIComponent('page,book,chapter');
 831                     return window.baseUrl(`/ajax/search/entities?types=${types}`);
 832                 }
 833
 834                 // Get initial contents
 835                 $http.get(getSearchUrl()).then(resp => {
 836                     scope.entityResults = $sce.trustAsHtml(resp.data);
 837                     scope.loading = false;
 838                 });
 839
 840                 // Search when typing
 841                 scope.searchEntities = function() {
 842                     scope.loading = true;
 843                     input.val('');
 844                     let url = getSearchUrl() + '&term=' + encodeURIComponent(scope.search);
 845                     $http.get(url).then(resp => {
 846                         scope.entityResults = $sce.trustAsHtml(resp.data);
 847                         scope.loading = false;
 848                     });
 849                 };
 850             }
 851         };
 852     }]);
 853 };
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