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https://github.com/BookStackApp/BookStack.git
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212 lines
6.9 KiB
JavaScript
212 lines
6.9 KiB
JavaScript
import * as Dates from "../services/dates";
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import {onSelect} from "../services/dom";
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/**
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* Page Editor
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* @extends {Component}
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*/
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class PageEditor {
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setup() {
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// Options
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this.draftsEnabled = this.$opts.draftsEnabled === 'true';
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this.editorType = this.$opts.editorType;
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this.pageId = Number(this.$opts.pageId);
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this.isNewDraft = this.$opts.pageNewDraft === 'true';
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this.hasDefaultTitle = this.$opts.hasDefaultTitle || false;
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// Elements
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this.container = this.$el;
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this.titleElem = this.$refs.titleContainer.querySelector('input');
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this.saveDraftButton = this.$refs.saveDraft;
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this.discardDraftButton = this.$refs.discardDraft;
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this.discardDraftWrap = this.$refs.discardDraftWrap;
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this.draftDisplay = this.$refs.draftDisplay;
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this.draftDisplayIcon = this.$refs.draftDisplayIcon;
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this.changelogInput = this.$refs.changelogInput;
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this.changelogDisplay = this.$refs.changelogDisplay;
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this.changeEditorButtons = this.$manyRefs.changeEditor;
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this.switchDialogContainer = this.$refs.switchDialog;
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// Translations
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this.draftText = this.$opts.draftText;
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this.autosaveFailText = this.$opts.autosaveFailText;
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this.editingPageText = this.$opts.editingPageText;
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this.draftDiscardedText = this.$opts.draftDiscardedText;
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this.setChangelogText = this.$opts.setChangelogText;
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// State data
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this.editorHTML = '';
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this.editorMarkdown = '';
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this.autoSave = {
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interval: null,
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frequency: 30000,
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last: 0,
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};
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this.shownWarningsCache = new Set();
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if (this.pageId !== 0 && this.draftsEnabled) {
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window.setTimeout(() => {
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this.startAutoSave();
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}, 1000);
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}
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this.draftDisplay.innerHTML = this.draftText;
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this.setupListeners();
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this.setInitialFocus();
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}
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setupListeners() {
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// Listen to save events from editor
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window.$events.listen('editor-save-draft', this.saveDraft.bind(this));
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window.$events.listen('editor-save-page', this.savePage.bind(this));
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// Listen to content changes from the editor
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window.$events.listen('editor-html-change', html => {
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this.editorHTML = html;
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});
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window.$events.listen('editor-markdown-change', markdown => {
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this.editorMarkdown = markdown;
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});
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// Changelog controls
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this.changelogInput.addEventListener('change', this.updateChangelogDisplay.bind(this));
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// Draft Controls
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onSelect(this.saveDraftButton, this.saveDraft.bind(this));
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onSelect(this.discardDraftButton, this.discardDraft.bind(this));
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// Change editor controls
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onSelect(this.changeEditorButtons, this.changeEditor.bind(this));
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}
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setInitialFocus() {
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if (this.hasDefaultTitle) {
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return this.titleElem.select();
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}
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window.setTimeout(() => {
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window.$events.emit('editor::focus', '');
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}, 500);
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}
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startAutoSave() {
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let lastContent = this.titleElem.value.trim() + '::' + this.editorHTML;
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this.autoSaveInterval = window.setInterval(() => {
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// Stop if manually saved recently to prevent bombarding the server
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let savedRecently = (Date.now() - this.autoSave.last < (this.autoSave.frequency)/2);
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if (savedRecently) return;
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const newContent = this.titleElem.value.trim() + '::' + this.editorHTML;
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if (newContent !== lastContent) {
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lastContent = newContent;
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this.saveDraft();
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}
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}, this.autoSave.frequency);
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}
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savePage() {
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this.container.closest('form').submit();
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}
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async saveDraft() {
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const data = {
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name: this.titleElem.value.trim(),
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html: this.editorHTML,
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};
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if (this.editorType === 'markdown') {
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data.markdown = this.editorMarkdown;
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}
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let didSave = false;
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try {
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const resp = await window.$http.put(`/ajax/page/${this.pageId}/save-draft`, data);
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if (!this.isNewDraft) {
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this.toggleDiscardDraftVisibility(true);
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}
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this.draftNotifyChange(`${resp.data.message} ${Dates.utcTimeStampToLocalTime(resp.data.timestamp)}`);
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this.autoSave.last = Date.now();
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if (resp.data.warning && !this.shownWarningsCache.has(resp.data.warning)) {
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window.$events.emit('warning', resp.data.warning);
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this.shownWarningsCache.add(resp.data.warning);
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}
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didSave = true;
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} catch (err) {
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// Save the editor content in LocalStorage as a last resort, just in case.
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try {
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const saveKey = `draft-save-fail-${(new Date()).toISOString()}`;
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window.localStorage.setItem(saveKey, JSON.stringify(data));
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} catch (err) {}
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window.$events.emit('error', this.autosaveFailText);
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}
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return didSave;
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}
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draftNotifyChange(text) {
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this.draftDisplay.innerText = text;
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this.draftDisplayIcon.classList.add('visible');
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window.setTimeout(() => {
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this.draftDisplayIcon.classList.remove('visible');
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}, 2000);
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}
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async discardDraft() {
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let response;
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try {
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response = await window.$http.get(`/ajax/page/${this.pageId}`);
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} catch (e) {
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return console.error(e);
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}
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if (this.autoSave.interval) {
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window.clearInterval(this.autoSave.interval);
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}
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this.draftDisplay.innerText = this.editingPageText;
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this.toggleDiscardDraftVisibility(false);
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window.$events.emit('editor::replace', {
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html: response.data.html,
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markdown: response.data.markdown,
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});
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this.titleElem.value = response.data.name;
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window.setTimeout(() => {
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this.startAutoSave();
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}, 1000);
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window.$events.emit('success', this.draftDiscardedText);
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}
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updateChangelogDisplay() {
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let summary = this.changelogInput.value.trim();
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if (summary.length === 0) {
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summary = this.setChangelogText;
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} else if (summary.length > 16) {
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summary = summary.slice(0, 16) + '...';
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}
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this.changelogDisplay.innerText = summary;
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}
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toggleDiscardDraftVisibility(show) {
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this.discardDraftWrap.classList.toggle('hidden', !show);
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}
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async changeEditor(event) {
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event.preventDefault();
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const link = event.target.closest('a').href;
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const dialog = this.switchDialogContainer.components['confirm-dialog'];
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const [saved, confirmed] = await Promise.all([this.saveDraft(), dialog.show()]);
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if (saved && confirmed) {
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window.location = link;
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}
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}
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}
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export default PageEditor; |