X-Git-Url: http://source.bookstackapp.com/bookstack/blobdiff_plain/30214fde74c954ee6cf4daeb562764343b546b58..refs/pull/448/head:/resources/assets/js/directives.js

diff --git a/resources/assets/js/directives.js b/resources/assets/js/directives.js
index 72d35d455..d783fd682 100644
--- a/resources/assets/js/directives.js
+++ b/resources/assets/js/directives.js
@@ -1,103 +1,63 @@
 "use strict";
-var DropZone = require('dropzone');
-
-var toggleSwitchTemplate = require('./components/toggle-switch.html');
-var imagePickerTemplate = require('./components/image-picker.html');
-var dropZoneTemplate = require('./components/drop-zone.html');
+const DropZone = require("dropzone");
+const MarkdownIt = require("markdown-it");
+const mdTasksLists = require('markdown-it-task-lists');
+const code = require('./code');
 
 module.exports = function (ngApp, events) {
 
     /**
-     * Toggle Switches
-     * Has basic on/off functionality.
-     * Use string values of 'true' & 'false' to dictate the current state.
+     * Common tab controls using simple jQuery functions.
      */
-    ngApp.directive('toggleSwitch', function () {
+    ngApp.directive('tabContainer', function() {
         return {
-            restrict: 'E',
-            template: toggleSwitchTemplate,
-            scope: true,
+            restrict: 'A',
             link: function (scope, element, attrs) {
-                scope.name = attrs.name;
-                scope.value = attrs.value;
-                scope.isActive = scope.value == true && scope.value != 'false';
-                scope.value = (scope.value == true && scope.value != 'false') ? 'true' : 'false';
+                const $content = element.find('[tab-content]');
+                const $buttons = element.find('[tab-button]');
 
-                scope.switch = function () {
-                    scope.isActive = !scope.isActive;
-                    scope.value = scope.isActive ? 'true' : 'false';
+                if (attrs.tabContainer) {
+                    let initial = attrs.tabContainer;
+                    $buttons.filter(`[tab-button="${initial}"]`).addClass('selected');
+                    $content.hide().filter(`[tab-content="${initial}"]`).show();
+                } else {
+                    $content.hide().first().show();
+                    $buttons.first().addClass('selected');
                 }
 
+                $buttons.click(function() {
+                    let clickedTab = $(this);
+                    $buttons.removeClass('selected');
+                    $content.hide();
+                    let name = clickedTab.addClass('selected').attr('tab-button');
+                    $content.filter(`[tab-content="${name}"]`).show();
+                });
             }
         };
     });
 
-
     /**
-     * Image Picker
-     * Is a simple front-end interface that connects to an ImageManager if present.
+     * Sub form component to allow inner-form sections to act like their own forms.
      */
-    ngApp.directive('imagePicker', ['$http', 'imageManagerService', function ($http, imageManagerService) {
+    ngApp.directive('subForm', function() {
         return {
-            restrict: 'E',
-            template: imagePickerTemplate,
-            scope: {
-                name: '@',
-                resizeHeight: '@',
-                resizeWidth: '@',
-                resizeCrop: '@',
-                showRemove: '=',
-                currentImage: '@',
-                currentId: '@',
-                defaultImage: '@',
-                imageClass: '@'
-            },
+            restrict: 'A',
             link: function (scope, element, attrs) {
-                var usingIds = typeof scope.currentId !== 'undefined' || scope.currentId === 'false';
-                scope.image = scope.currentImage;
-                scope.value = scope.currentImage || '';
-                if (usingIds) scope.value = scope.currentId;
-
-                function setImage(imageModel, imageUrl) {
-                    scope.image = imageUrl;
-                    scope.value = usingIds ? imageModel.id : imageUrl;
-                }
-
-                scope.reset = function () {
-                    setImage({id: 0}, scope.defaultImage);
-                };
-
-                scope.remove = function () {
-                    scope.image = 'none';
-                    scope.value = 'none';
-                };
-
-                scope.showImageManager = function () {
-                    imageManagerService.show((image) => {
-                        scope.updateImageFromModel(image);
-                    });
-                };
-
-                scope.updateImageFromModel = function (model) {
-                    var isResized = scope.resizeWidth && scope.resizeHeight;
-
-                    if (!isResized) {
-                        scope.$apply(() => {
-                            setImage(model, model.url);
-                        });
-                        return;
+                element.on('keypress', e => {
+                    if (e.keyCode === 13) {
+                        submitEvent(e);
                     }
+                });
 
-                    var cropped = scope.resizeCrop ? 'true' : 'false';
-                    var requestString = '/images/thumb/' + model.id + '/' + scope.resizeWidth + '/' + scope.resizeHeight + '/' + cropped;
-                    $http.get(requestString).then((response) => {
-                        setImage(model, response.data.url);
-                    });
-                };
+                element.find('button[type="submit"]').click(submitEvent);
 
+                function submitEvent(e) {
+                    e.preventDefault();
+                    if (attrs.subForm) scope.$eval(attrs.subForm);
+                }
             }
         };
-    }]);
+    });
 
     /**
      * DropZone
@@ -106,20 +66,29 @@ module.exports = function (ngApp, events) {
     ngApp.directive('dropZone', [function () {
         return {
             restrict: 'E',
-            template: dropZoneTemplate,
+            template: `
+            <div class="dropzone-container">
+                <div class="dz-message">{{message}}</div>
+            </div>
+            `,
             scope: {
                 uploadUrl: '@',
                 eventSuccess: '=',
-                eventError: '='
+                eventError: '=',
+                uploadedTo: '@',
             },
             link: function (scope, element, attrs) {
-                var dropZone = new DropZone(element[0].querySelector('.dropzone-container'), {
+                scope.message = attrs.message;
+                if (attrs.placeholder) element[0].querySelector('.dz-message').textContent = attrs.placeholder;
+                let dropZone = new DropZone(element[0].querySelector('.dropzone-container'), {
                     url: scope.uploadUrl,
                     init: function () {
-                        var dz = this;
+                        let dz = this;
                         dz.on('sending', function (file, xhr, data) {
-                            var token = window.document.querySelector('meta[name=token]').getAttribute('content');
+                            let token = window.document.querySelector('meta[name=token]').getAttribute('content');
                             data.append('_token', token);
+                            let uploadedTo = typeof scope.uploadedTo === 'undefined' ? 0 : scope.uploadedTo;
+                            data.append('uploaded_to', uploadedTo);
                         });
                         if (typeof scope.eventSuccess !== 'undefined') dz.on('success', scope.eventSuccess);
                         dz.on('success', function (file, data) {
@@ -135,7 +104,7 @@ module.exports = function (ngApp, events) {
                                 $(file.previewElement).find('[data-dz-errormessage]').text(message);
                             }
 
-                            if (xhr.status === 413) setMessage('The server does not allow uploads of this size. Please try a smaller file.');
+                            if (xhr.status === 413) setMessage(trans('errors.server_upload_limit'));
                             if (errorMessage.file) setMessage(errorMessage.file[0]);
 
                         });
@@ -145,24 +114,50 @@ module.exports = function (ngApp, events) {
         };
     }]);
 
-
+    /**
+     * Dropdown
+     * Provides some simple logic to create small dropdown menus
+     */
     ngApp.directive('dropdown', [function () {
         return {
             restrict: 'A',
             link: function (scope, element, attrs) {
-                var menu = element.find('ul');
-                element.find('[dropdown-toggle]').on('click', function () {
+                const menu = element.find('ul');
+
+                function hide() {
+                    menu.hide();
+                    menu.removeClass('anim menuIn');
+                }
+
+                function show() {
                     menu.show().addClass('anim menuIn');
-                    element.mouseleave(function () {
-                        menu.hide();
-                        menu.removeClass('anim menuIn');
-                    });
+                    element.mouseleave(hide);
+
+                    // Focus on input if exist in dropdown and hide on enter press
+                    let inputs = menu.find('input');
+                    if (inputs.length > 0) inputs.first().focus();
+                }
+
+                // Hide menu on option click
+                element.on('click', '> ul a', hide);
+                // Show dropdown on toggle click.
+                element.find('[dropdown-toggle]').on('click', show);
+                // Hide menu on enter press in inputs
+                element.on('keypress', 'input', event => {
+                    if (event.keyCode !== 13) return true;
+                    event.preventDefault();
+                    hide();
+                    return false;
                 });
             }
         };
     }]);
 
-    ngApp.directive('tinymce', ['$timeout', function($timeout) {
+    /**
+     * TinyMCE
+     * An angular wrapper around the tinyMCE editor.
+     */
+    ngApp.directive('tinymce', ['$timeout', function ($timeout) {
         return {
             restrict: 'A',
             scope: {
@@ -174,13 +169,17 @@ module.exports = function (ngApp, events) {
 
                 function tinyMceSetup(editor) {
                     editor.on('ExecCommand change NodeChange ObjectResized', (e) => {
-                        var content = editor.getContent();
+                        let content = editor.getContent();
                         $timeout(() => {
                             scope.mceModel = content;
                         });
                         scope.mceChange(content);
                     });
 
+                    editor.on('keydown', (event) => {
+                        scope.$emit('editor-keydown', event);
+                    });
+
                     editor.on('init', (e) => {
                         scope.mceModel = editor.getContent();
                     });
@@ -194,10 +193,606 @@ module.exports = function (ngApp, events) {
                 }
 
                 scope.tinymce.extraSetups.push(tinyMceSetup);
+
+                // Custom tinyMCE plugins
+                tinymce.PluginManager.add('customhr', function (editor) {
+                    editor.addCommand('InsertHorizontalRule', function () {
+                        let hrElem = document.createElement('hr');
+                        let cNode = editor.selection.getNode();
+                        let parentNode = cNode.parentNode;
+                        parentNode.insertBefore(hrElem, cNode);
+                    });
+
+                    editor.addButton('hr', {
+                        icon: 'hr',
+                        tooltip: 'Horizontal line',
+                        cmd: 'InsertHorizontalRule'
+                    });
+
+                    editor.addMenuItem('hr', {
+                        icon: 'hr',
+                        text: 'Horizontal line',
+                        cmd: 'InsertHorizontalRule',
+                        context: 'insert'
+                    });
+                });
+
                 tinymce.init(scope.tinymce);
             }
         }
-    }])
+    }]);
+
+    const md = new MarkdownIt({html: true});
+    md.use(mdTasksLists, {label: true});
+
+    /**
+     * Markdown input
+     * Handles the logic for just the editor input field.
+     */
+    ngApp.directive('markdownInput', ['$timeout', function ($timeout) {
+        return {
+            restrict: 'A',
+            scope: {
+                mdModel: '=',
+                mdChange: '='
+            },
+            link: function (scope, element, attrs) {
+
+                // Codemirror Setup
+                element = element.find('textarea').first();
+                let cm = code.markdownEditor(element[0]);
+
+                // Custom key commands
+                let metaKey = code.getMetaKey();
+                const extraKeys = {};
+                // Insert Image shortcut
+                extraKeys[`${metaKey}-Alt-I`] = function(cm) {
+                    let selectedText = cm.getSelection();
+                    let newText = `![${selectedText}](http://)`;
+                    let cursorPos = cm.getCursor('from');
+                    cm.replaceSelection(newText);
+                    cm.setCursor(cursorPos.line, cursorPos.ch + newText.length -1);
+                };
+                // Save draft
+                extraKeys[`${metaKey}-S`] = function(cm) {scope.$emit('save-draft');};
+                // Show link selector
+                extraKeys[`Shift-${metaKey}-K`] = function(cm) {showLinkSelector()};
+                cm.setOption('extraKeys', extraKeys);
+
+                // Update data on content change
+                cm.on('change', (instance, changeObj) => {
+                    update(instance);
+                });
+
+                // Handle scroll to sync display view
+                cm.on('scroll', instance => {
+                    // Thanks to http://liuhao.im/english/2015/11/10/the-sync-scroll-of-markdown-editor-in-javascript.html
+                    let scroll = instance.getScrollInfo();
+                    let atEnd = scroll.top + scroll.clientHeight === scroll.height;
+                    if (atEnd) {
+                        scope.$emit('markdown-scroll', -1);
+                        return;
+                    }
+                    let lineNum = instance.lineAtHeight(scroll.top, 'local');
+                    let range = instance.getRange({line: 0, ch: null}, {line: lineNum, ch: null});
+                    let parser = new DOMParser();
+                    let doc = parser.parseFromString(md.render(range), 'text/html');
+                    let totalLines = doc.documentElement.querySelectorAll('body > *');
+                    scope.$emit('markdown-scroll', totalLines.length);
+                });
+
+                // Handle image paste
+                cm.on('paste', (cm, event) => {
+                    if (!event.clipboardData || !event.clipboardData.items) return;
+                    for (let i = 0; i < event.clipboardData.items.length; i++) {
+                        uploadImage(event.clipboardData.items[i].getAsFile());
+                    }
+                });
+
+                // Handle images on drag-drop
+                cm.on('drop', (cm, event) => {
+                    event.stopPropagation();
+                    event.preventDefault();
+                    let cursorPos = cm.coordsChar({left: event.pageX, top: event.pageY});
+                    cm.setCursor(cursorPos);
+                    if (!event.dataTransfer || !event.dataTransfer.files) return;
+                    for (let i = 0; i < event.dataTransfer.files.length; i++) {
+                        uploadImage(event.dataTransfer.files[i]);
+                    }
+                });
+
+                // Helper to replace editor content
+                function replaceContent(search, replace) {
+                    let text = cm.getValue();
+                    let cursor = cm.listSelections();
+                    cm.setValue(text.replace(search, replace));
+                    cm.setSelections(cursor);
+                }
+
+                // Handle image upload and add image into markdown content
+                function uploadImage(file) {
+                    if (file === null || file.type.indexOf('image') !== 0) return;
+                    let ext = 'png';
+
+                    if (file.name) {
+                        let fileNameMatches = file.name.match(/\.(.+)$/);
+                        if (fileNameMatches.length > 1) ext = fileNameMatches[1];
+                    }
+
+                    // Insert image into markdown
+                    let id = "image-" + Math.random().toString(16).slice(2);
+                    let placeholderImage = window.baseUrl(`/loading.gif#upload${id}`);
+                    let selectedText = cm.getSelection();
+                    let placeHolderText = `![${selectedText}](${placeholderImage})`;
+                    cm.replaceSelection(placeHolderText);
+
+                    let remoteFilename = "image-" + Date.now() + "." + ext;
+                    let formData = new FormData();
+                    formData.append('file', file, remoteFilename);
+
+                    window.$http.post('/images/gallery/upload', formData).then(resp => {
+                        replaceContent(placeholderImage, resp.data.thumbs.display);
+                    }).catch(err => {
+                        events.emit('error', trans('errors.image_upload_error'));
+                        replaceContent(placeHolderText, selectedText);
+                        console.log(err);
+                    });
+                }
+
+                // Show the popup link selector and insert a link when finished
+                function showLinkSelector() {
+                    let cursorPos = cm.getCursor('from');
+                    window.showEntityLinkSelector(entity => {
+                        let selectedText = cm.getSelection() || entity.name;
+                        let newText = `[${selectedText}](${entity.link})`;
+                        cm.focus();
+                        cm.replaceSelection(newText);
+                        cm.setCursor(cursorPos.line, cursorPos.ch + newText.length);
+                    });
+                }
+
+                // Show the image manager and handle image insertion
+                function showImageManager() {
+                    let cursorPos = cm.getCursor('from');
+                    window.ImageManager.showExternal(image => {
+                        let selectedText = cm.getSelection();
+                        let newText = "![" + (selectedText || image.name) + "](" + image.thumbs.display + ")";
+                        cm.focus();
+                        cm.replaceSelection(newText);
+                        cm.setCursor(cursorPos.line, cursorPos.ch + newText.length);
+                    });
+                }
+
+                // Update the data models and rendered output
+                function update(instance) {
+                    let content = instance.getValue();
+                    element.val(content);
+                    $timeout(() => {
+                        scope.mdModel = content;
+                        scope.mdChange(md.render(content));
+                    });
+                }
+                update(cm);
+
+                // Listen to commands from parent scope
+                scope.$on('md-insert-link', showLinkSelector);
+                scope.$on('md-insert-image', showImageManager);
+                scope.$on('markdown-update', (event, value) => {
+                    cm.setValue(value);
+                    element.val(value);
+                    scope.mdModel = value;
+                    scope.mdChange(md.render(value));
+                });
+
+            }
+        }
+    }]);
+
+    /**
+     * Markdown Editor
+     * Handles all functionality of the markdown editor.
+     */
+    ngApp.directive('markdownEditor', ['$timeout', '$rootScope', function ($timeout, $rootScope) {
+        return {
+            restrict: 'A',
+            link: function (scope, element, attrs) {
+
+                // Editor Elements
+                const $display = element.find('.markdown-display').first();
+                const $insertImage = element.find('button[data-action="insertImage"]');
+                const $insertEntityLink = element.find('button[data-action="insertEntityLink"]');
+
+                // Prevent markdown display link click redirect
+                $display.on('click', 'a', function(event) {
+                    event.preventDefault();
+                    window.open(this.getAttribute('href'));
+                });
+
+                // Editor UI Actions
+                $insertEntityLink.click(e => {scope.$broadcast('md-insert-link');});
+                $insertImage.click(e => {scope.$broadcast('md-insert-image');});
+
+                // Handle scroll sync event from editor scroll
+                $rootScope.$on('markdown-scroll', (event, lineCount) => {
+                    let elems = $display[0].children[0].children;
+                    if (elems.length > lineCount) {
+                        let topElem = (lineCount === -1) ? elems[elems.length-1] : elems[lineCount];
+                        $display.animate({
+                            scrollTop: topElem.offsetTop
+                        }, {queue: false, duration: 200, easing: 'linear'});
+                    }
+                });
+            }
+        }
+    }]);
+
+    /**
+     * Page Editor Toolbox
+     * Controls all functionality for the sliding toolbox
+     * on the page edit view.
+     */
+    ngApp.directive('toolbox', [function () {
+        return {
+            restrict: 'A',
+            link: function (scope, elem, attrs) {
+
+                // Get common elements
+                const $buttons = elem.find('[toolbox-tab-button]');
+                const $content = elem.find('[toolbox-tab-content]');
+                const $toggle = elem.find('[toolbox-toggle]');
+
+                // Handle toolbox toggle click
+                $toggle.click((e) => {
+                    elem.toggleClass('open');
+                });
+
+                // Set an active tab/content by name
+                function setActive(tabName, openToolbox) {
+                    $buttons.removeClass('active');
+                    $content.hide();
+                    $buttons.filter(`[toolbox-tab-button="${tabName}"]`).addClass('active');
+                    $content.filter(`[toolbox-tab-content="${tabName}"]`).show();
+                    if (openToolbox) elem.addClass('open');
+                }
+
+                // Set the first tab content active on load
+                setActive($content.first().attr('toolbox-tab-content'), false);
+
+                // Handle tab button click
+                $buttons.click(function (e) {
+                    let name = $(this).attr('toolbox-tab-button');
+                    setActive(name, true);
+                });
+            }
+        }
+    }]);
+
+    /**
+     * Tag Autosuggestions
+     * Listens to child inputs and provides autosuggestions depending on field type
+     * and input. Suggestions provided by server.
+     */
+    ngApp.directive('tagAutosuggestions', ['$http', function ($http) {
+        return {
+            restrict: 'A',
+            link: function (scope, elem, attrs) {
+
+                // Local storage for quick caching.
+                const localCache = {};
+
+                // Create suggestion element
+                const suggestionBox = document.createElement('ul');
+                suggestionBox.className = 'suggestion-box';
+                suggestionBox.style.position = 'absolute';
+                suggestionBox.style.display = 'none';
+                const $suggestionBox = $(suggestionBox);
+
+                // General state tracking
+                let isShowing = false;
+                let currentInput = false;
+                let active = 0;
+
+                // Listen to input events on autosuggest fields
+                elem.on('input focus', '[autosuggest]', function (event) {
+                    let $input = $(this);
+                    let val = $input.val();
+                    let url = $input.attr('autosuggest');
+                    let type = $input.attr('autosuggest-type');
+
+                    // Add name param to request if for a value
+                    if (type.toLowerCase() === 'value') {
+                        let $nameInput = $input.closest('tr').find('[autosuggest-type="name"]').first();
+                        let nameVal = $nameInput.val();
+                        if (nameVal !== '') {
+                            url += '?name=' + encodeURIComponent(nameVal);
+                        }
+                    }
+
+                    let suggestionPromise = getSuggestions(val.slice(0, 3), url);
+                    suggestionPromise.then(suggestions => {
+                        if (val.length === 0) {
+                            displaySuggestions($input, suggestions.slice(0, 6));
+                        } else  {
+                            suggestions = suggestions.filter(item => {
+                                return item.toLowerCase().indexOf(val.toLowerCase()) !== -1;
+                            }).slice(0, 4);
+                            displaySuggestions($input, suggestions);
+                        }
+                    });
+                });
+
+                // Hide autosuggestions when input loses focus.
+                // Slight delay to allow clicks.
+                let lastFocusTime = 0;
+                elem.on('blur', '[autosuggest]', function (event) {
+                    let startTime = Date.now();
+                    setTimeout(() => {
+                        if (lastFocusTime < startTime) {
+                            $suggestionBox.hide();
+                            isShowing = false;
+                        }
+                    }, 200)
+                });
+                elem.on('focus', '[autosuggest]', function (event) {
+                    lastFocusTime = Date.now();
+                });
+
+                elem.on('keydown', '[autosuggest]', function (event) {
+                    if (!isShowing) return;
+
+                    let suggestionElems = suggestionBox.childNodes;
+                    let suggestCount = suggestionElems.length;
+
+                    // Down arrow
+                    if (event.keyCode === 40) {
+                        let newActive = (active === suggestCount - 1) ? 0 : active + 1;
+                        changeActiveTo(newActive, suggestionElems);
+                    }
+                    // Up arrow
+                    else if (event.keyCode === 38) {
+                        let newActive = (active === 0) ? suggestCount - 1 : active - 1;
+                        changeActiveTo(newActive, suggestionElems);
+                    }
+                    // Enter or tab key
+                    else if ((event.keyCode === 13 || event.keyCode === 9) && !event.shiftKey) {
+                        currentInput[0].value = suggestionElems[active].textContent;
+                        currentInput.focus();
+                        $suggestionBox.hide();
+                        isShowing = false;
+                        if (event.keyCode === 13) {
+                            event.preventDefault();
+                            return false;
+                        }
+                    }
+                });
+
+                // Change the active suggestion to the given index
+                function changeActiveTo(index, suggestionElems) {
+                    suggestionElems[active].className = '';
+                    active = index;
+                    suggestionElems[active].className = 'active';
+                }
+
+                // Display suggestions on a field
+                let prevSuggestions = [];
+
+                function displaySuggestions($input, suggestions) {
+
+                    // Hide if no suggestions
+                    if (suggestions.length === 0) {
+                        $suggestionBox.hide();
+                        isShowing = false;
+                        prevSuggestions = suggestions;
+                        return;
+                    }
+
+                    // Otherwise show and attach to input
+                    if (!isShowing) {
+                        $suggestionBox.show();
+                        isShowing = true;
+                    }
+                    if ($input !== currentInput) {
+                        $suggestionBox.detach();
+                        $input.after($suggestionBox);
+                        currentInput = $input;
+                    }
+
+                    // Return if no change
+                    if (prevSuggestions.join() === suggestions.join()) {
+                        prevSuggestions = suggestions;
+                        return;
+                    }
+
+                    // Build suggestions
+                    $suggestionBox[0].innerHTML = '';
+                    for (let i = 0; i < suggestions.length; i++) {
+                        let suggestion = document.createElement('li');
+                        suggestion.textContent = suggestions[i];
+                        suggestion.onclick = suggestionClick;
+                        if (i === 0) {
+                            suggestion.className = 'active';
+                            active = 0;
+                        }
+                        $suggestionBox[0].appendChild(suggestion);
+                    }
+
+                    prevSuggestions = suggestions;
+                }
+
+                // Suggestion click event
+                function suggestionClick(event) {
+                    currentInput[0].value = this.textContent;
+                    currentInput.focus();
+                    $suggestionBox.hide();
+                    isShowing = false;
+                }
+
+                // Get suggestions & cache
+                function getSuggestions(input, url) {
+                    let hasQuery = url.indexOf('?') !== -1;
+                    let searchUrl = url + (hasQuery ? '&' : '?') + 'search=' + encodeURIComponent(input);
+
+                    // Get from local cache if exists
+                    if (typeof localCache[searchUrl] !== 'undefined') {
+                        return new Promise((resolve, reject) => {
+                            resolve(localCache[searchUrl]);
+                        });
+                    }
+
+                    return $http.get(searchUrl).then(response => {
+                        localCache[searchUrl] = response.data;
+                        return response.data;
+                    });
+                }
+
+            }
+        }
+    }]);
+
+    ngApp.directive('entityLinkSelector', [function($http) {
+        return {
+            restrict: 'A',
+            link: function(scope, element, attrs) {
+
+                const selectButton = element.find('.entity-link-selector-confirm');
+                let callback = false;
+                let entitySelection = null;
+
+                // Handle entity selection change, Stores the selected entity locally
+                function entitySelectionChange(entity) {
+                    entitySelection = entity;
+                    if (entity === null) {
+                        selectButton.attr('disabled', 'true');
+                    } else {
+                        selectButton.removeAttr('disabled');
+                    }
+                }
+                events.listen('entity-select-change', entitySelectionChange);
+
+                // Handle selection confirm button click
+                selectButton.click(event => {
+                    hide();
+                    if (entitySelection !== null) callback(entitySelection);
+                });
+
+                // Show selector interface
+                function show() {
+                    element.fadeIn(240);
+                }
+
+                // Hide selector interface
+                function hide() {
+                    element.fadeOut(240);
+                }
+
+                // Listen to confirmation of entity selections (doubleclick)
+                events.listen('entity-select-confirm', entity => {
+                    hide();
+                    callback(entity);
+                });
+
+                // Show entity selector, Accessible globally, and store the callback
+                window.showEntityLinkSelector = function(passedCallback) {
+                    show();
+                    callback = passedCallback;
+                };
+
+            }
+        };
+    }]);
+
+
+    ngApp.directive('entitySelector', ['$http', '$sce', function ($http, $sce) {
+        return {
+            restrict: 'A',
+            scope: true,
+            link: function (scope, element, attrs) {
+                scope.loading = true;
+                scope.entityResults = false;
+                scope.search = '';
+
+                // Add input for forms
+                const input = element.find('[entity-selector-input]').first();
+
+                // Detect double click events
+                let lastClick = 0;
+                function isDoubleClick() {
+                    let now = Date.now();
+                    let answer = now - lastClick < 300;
+                    lastClick = now;
+                    return answer;
+                }
+
+                // Listen to entity item clicks
+                element.on('click', '.entity-list a', function(event) {
+                    event.preventDefault();
+                    event.stopPropagation();
+                    let item = $(this).closest('[data-entity-type]');
+                    itemSelect(item, isDoubleClick());
+                });
+                element.on('click', '[data-entity-type]', function(event) {
+                    itemSelect($(this), isDoubleClick());
+                });
+
+                // Select entity action
+                function itemSelect(item, doubleClick) {
+                    let entityType = item.attr('data-entity-type');
+                    let entityId = item.attr('data-entity-id');
+                    let isSelected = !item.hasClass('selected') || doubleClick;
+                    element.find('.selected').removeClass('selected').removeClass('primary-background');
+                    if (isSelected) item.addClass('selected').addClass('primary-background');
+                    let newVal = isSelected ? `${entityType}:${entityId}` : '';
+                    input.val(newVal);
+
+                    if (!isSelected) {
+                        events.emit('entity-select-change', null);
+                    }
+
+                    if (!doubleClick && !isSelected) return;
+
+                    let link = item.find('.entity-list-item-link').attr('href');
+                    let name = item.find('.entity-list-item-name').text();
 
+                    if (doubleClick) {
+                        events.emit('entity-select-confirm', {
+                            id: Number(entityId),
+                            name: name,
+                            link: link
+                        });
+                    }
+
+                    if (isSelected) {
+                        events.emit('entity-select-change', {
+                            id: Number(entityId),
+                            name: name,
+                            link: link
+                        });
+                    }
+                }
+
+                // Get search url with correct types
+                function getSearchUrl() {
+                    let types = (attrs.entityTypes) ? encodeURIComponent(attrs.entityTypes) : encodeURIComponent('page,book,chapter');
+                    return window.baseUrl(`/ajax/search/entities?types=${types}`);
+                }
 
-};
\ No newline at end of file
+                // Get initial contents
+                $http.get(getSearchUrl()).then(resp => {
+                    scope.entityResults = $sce.trustAsHtml(resp.data);
+                    scope.loading = false;
+                });
+
+                // Search when typing
+                scope.searchEntities = function() {
+                    scope.loading = true;
+                    input.val('');
+                    let url = getSearchUrl() + '&term=' + encodeURIComponent(scope.search);
+                    $http.get(url).then(resp => {
+                        scope.entityResults = $sce.trustAsHtml(resp.data);
+                        scope.loading = false;
+                    });
+                };
+            }
+        };
+    }]);
+};