BookStack Code Mirror - bookstack/blob - resources/js/components/image-manager.js

   1 import {
   2     onChildEvent, onSelect, removeLoading, showLoading,
   3 } from '../services/dom';
   4 import {Component} from './component';
   5
   6 export class ImageManager extends Component {
   7
   8     setup() {
   9         // Options
  10         this.uploadedTo = this.$opts.uploadedTo;
  11
  12         // Element References
  13         this.container = this.$el;
  14         this.popupEl = this.$refs.popup;
  15         this.searchForm = this.$refs.searchForm;
  16         this.searchInput = this.$refs.searchInput;
  17         this.cancelSearch = this.$refs.cancelSearch;
  18         this.listContainer = this.$refs.listContainer;
  19         this.filterTabs = this.$manyRefs.filterTabs;
  20         this.selectButton = this.$refs.selectButton;
  21         this.uploadButton = this.$refs.uploadButton;
  22         this.uploadHint = this.$refs.uploadHint;
  23         this.formContainer = this.$refs.formContainer;
  24         this.formContainerPlaceholder = this.$refs.formContainerPlaceholder;
  25         this.dropzoneContainer = this.$refs.dropzoneContainer;
  26         this.loadMore = this.$refs.loadMore;
  27
  28         // Instance data
  29         this.type = 'gallery';
  30         this.lastSelected = {};
  31         this.lastSelectedTime = 0;
  32         this.callback = null;
  33         this.resetState = () => {
  34             this.hasData = false;
  35             this.page = 1;
  36             this.filter = 'all';
  37         };
  38         this.resetState();
  39
  40         this.setupListeners();
  41     }
  42
  43     setupListeners() {
  44         // Filter tab click
  45         onSelect(this.filterTabs, e => {
  46             this.resetAll();
  47             this.filter = e.target.dataset.filter;
  48             this.setActiveFilterTab(this.filter);
  49             this.loadGallery();
  50         });
  51
  52         // Search submit
  53         this.searchForm.addEventListener('submit', event => {
  54             this.resetListView();
  55             this.loadGallery();
  56             event.preventDefault();
  57         });
  58
  59         // Cancel search button
  60         onSelect(this.cancelSearch, () => {
  61             this.resetListView();
  62             this.resetSearchView();
  63             this.loadGallery();
  64         });
  65
  66         // Load more button click
  67         onChildEvent(this.container, '.load-more button', 'click', this.runLoadMore.bind(this));
  68
  69         // Select image event
  70         this.listContainer.addEventListener('event-emit-select-image', this.onImageSelectEvent.bind(this));
  71
  72         // Image load error handling
  73         this.listContainer.addEventListener('error', event => {
  74             event.target.src = window.baseUrl('loading_error.png');
  75         }, true);
  76
  77         // Footer select button click
  78         onSelect(this.selectButton, () => {
  79             if (this.callback) {
  80                 this.callback(this.lastSelected);
  81             }
  82             this.hide();
  83         });
  84
  85         // Delete button click
  86         onChildEvent(this.formContainer, '#image-manager-delete', 'click', () => {
  87             if (this.lastSelected) {
  88                 this.loadImageEditForm(this.lastSelected.id, true);
  89             }
  90         });
  91
  92         // Edit form submit
  93         this.formContainer.addEventListener('ajax-form-success', () => {
  94             this.refreshGallery();
  95             this.resetEditForm();
  96         });
  97
  98         // Image upload success
  99         this.container.addEventListener('dropzone-upload-success', this.refreshGallery.bind(this));
 100
 101         // Auto load-more on scroll
 102         const scrollZone = this.listContainer.parentElement;
 103         let scrollEvents = [];
 104         scrollZone.addEventListener('wheel', event => {
 105             const scrollOffset = Math.ceil(scrollZone.scrollHeight - scrollZone.scrollTop);
 106             const bottomedOut = scrollOffset === scrollZone.clientHeight;
 107             if (!bottomedOut || event.deltaY < 1) {
 108                 return;
 109             }
 110
 111             const secondAgo = Date.now() - 1000;
 112             scrollEvents.push(Date.now());
 113             scrollEvents = scrollEvents.filter(d => d >= secondAgo);
 114             if (scrollEvents.length > 5 && this.canLoadMore()) {
 115                 this.runLoadMore();
 116             }
 117         });
 118     }
 119
 120     show(callback, type = 'gallery') {
 121         this.resetAll();
 122
 123         this.callback = callback;
 124         this.type = type;
 125         this.getPopup().show();
 126
 127         const hideUploads = type !== 'gallery';
 128         this.dropzoneContainer.classList.toggle('hidden', hideUploads);
 129         this.uploadButton.classList.toggle('hidden', hideUploads);
 130         this.uploadHint.classList.toggle('hidden', hideUploads);
 131
 132         /** @var {Dropzone} * */
 133         const dropzone = window.$components.firstOnElement(this.container, 'dropzone');
 134         dropzone.toggleActive(!hideUploads);
 135
 136         if (!this.hasData) {
 137             this.loadGallery();
 138             this.hasData = true;
 139         }
 140     }
 141
 142     hide() {
 143         this.getPopup().hide();
 144     }
 145
 146     /**
 147      * @returns {Popup}
 148      */
 149     getPopup() {
 150         return window.$components.firstOnElement(this.popupEl, 'popup');
 151     }
 152
 153     async loadGallery() {
 154         const params = {
 155             page: this.page,
 156             search: this.searchInput.value || null,
 157             uploaded_to: this.uploadedTo,
 158             filter_type: this.filter === 'all' ? null : this.filter,
 159         };
 160
 161         const {data: html} = await window.$http.get(`images/${this.type}`, params);
 162         if (params.page === 1) {
 163             this.listContainer.innerHTML = '';
 164         }
 165         this.addReturnedHtmlElementsToList(html);
 166         removeLoading(this.listContainer);
 167     }
 168
 169     addReturnedHtmlElementsToList(html) {
 170         const el = document.createElement('div');
 171         el.innerHTML = html;
 172
 173         const loadMore = el.querySelector('.load-more');
 174         if (loadMore) {
 175             loadMore.remove();
 176             this.loadMore.innerHTML = loadMore.innerHTML;
 177         }
 178         this.loadMore.toggleAttribute('hidden', !loadMore);
 179
 180         window.$components.init(el);
 181         for (const child of [...el.children]) {
 182             this.listContainer.appendChild(child);
 183         }
 184     }
 185
 186     setActiveFilterTab(filterName) {
 187         for (const tab of this.filterTabs) {
 188             const selected = tab.dataset.filter === filterName;
 189             tab.setAttribute('aria-selected', selected ? 'true' : 'false');
 190         }
 191     }
 192
 193     resetAll() {
 194         this.resetState();
 195         this.resetListView();
 196         this.resetSearchView();
 197         this.resetEditForm();
 198         this.setActiveFilterTab('all');
 199         this.selectButton.classList.add('hidden');
 200     }
 201
 202     resetSearchView() {
 203         this.searchInput.value = '';
 204     }
 205
 206     resetEditForm() {
 207         this.formContainer.innerHTML = '';
 208         this.formContainerPlaceholder.removeAttribute('hidden');
 209     }
 210
 211     resetListView() {
 212         showLoading(this.listContainer);
 213         this.page = 1;
 214     }
 215
 216     refreshGallery() {
 217         this.resetListView();
 218         this.loadGallery();
 219     }
 220
 221     onImageSelectEvent(event) {
 222         const image = JSON.parse(event.detail.data);
 223         const isDblClick = ((image && image.id === this.lastSelected.id)
 224             && Date.now() - this.lastSelectedTime < 400);
 225         const alreadySelected = event.target.classList.contains('selected');
 226         [...this.listContainer.querySelectorAll('.selected')].forEach(el => {
 227             el.classList.remove('selected');
 228         });
 229
 230         if (!alreadySelected) {
 231             event.target.classList.add('selected');
 232             this.loadImageEditForm(image.id);
 233         } else {
 234             this.resetEditForm();
 235         }
 236         this.selectButton.classList.toggle('hidden', alreadySelected);
 237
 238         if (isDblClick && this.callback) {
 239             this.callback(image);
 240             this.hide();
 241         }
 242
 243         this.lastSelected = image;
 244         this.lastSelectedTime = Date.now();
 245     }
 246
 247     async loadImageEditForm(imageId, requestDelete = false) {
 248         if (!requestDelete) {
 249             this.formContainer.innerHTML = '';
 250         }
 251
 252         const params = requestDelete ? {delete: true} : {};
 253         const {data: formHtml} = await window.$http.get(`/images/edit/${imageId}`, params);
 254         this.formContainer.innerHTML = formHtml;
 255         this.formContainerPlaceholder.setAttribute('hidden', '');
 256         window.$components.init(this.formContainer);
 257     }
 258
 259     runLoadMore() {
 260         showLoading(this.loadMore);
 261         this.page += 1;
 262         this.loadGallery();
 263     }
 264
 265     canLoadMore() {
 266         return this.loadMore.querySelector('button') && !this.loadMore.hasAttribute('hidden');
 267     }
 268
 269 }