613 lines
21 KiB
JavaScript
613 lines
21 KiB
JavaScript
import Component from 'ember-component';
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import ShortcutsMixin from 'ghost-admin/mixins/shortcuts';
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import computed from 'ember-computed';
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import ctrlOrCmd from 'ghost-admin/utils/ctrl-or-cmd';
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import formatMarkdown from 'ghost-admin/utils/format-markdown';
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import injectService from 'ember-service/inject';
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import run from 'ember-runloop';
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import {assign} from 'ember-platform';
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import {copy} from 'ember-metal/utils';
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import {htmlSafe} from 'ember-string';
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import {isEmpty, typeOf} from 'ember-utils';
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const MOBILEDOC_VERSION = '0.3.1';
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export const BLANK_DOC = {
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version: MOBILEDOC_VERSION,
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markups: [],
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atoms: [],
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cards: [
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['card-markdown', {
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cardName: 'card-markdown',
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markdown: ''
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}]
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],
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sections: [[10, 0]]
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};
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export default Component.extend(ShortcutsMixin, {
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config: injectService(),
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notifications: injectService(),
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settings: injectService(),
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classNames: ['gh-markdown-editor'],
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classNameBindings: [
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'_isFullScreen:gh-markdown-editor-full-screen',
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'_isSplitScreen:gh-markdown-editor-side-by-side'
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],
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// Public attributes
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autofocus: false,
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imageMimeTypes: null,
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isFullScreen: false,
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mobiledoc: null,
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options: null,
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placeholder: '',
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uploadedImageUrls: null,
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// Closure actions
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onChange() {},
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onFullScreenToggle() {},
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onImageFilesSelected() {},
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onPreviewToggle() {},
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onSplitScreenToggle() {},
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showMarkdownHelp() {},
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// Internal attributes
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markdown: null,
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// Private
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_editor: null,
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_editorFocused: false,
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_isFullScreen: false,
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_isSplitScreen: false,
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_isHemmingwayMode: false,
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_isUploading: false,
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_showUnsplash: false,
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_statusbar: null,
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_toolbar: null,
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_uploadedImageUrls: null,
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simpleMDEOptions: computed('options', function () {
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let options = this.get('options') || {};
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let defaultOptions = {
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// use our Showdown config with sanitization for previews
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previewRender(markdown) {
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return formatMarkdown(markdown);
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},
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// Ghost-specific SimpleMDE toolbar config - allows us to create a
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// bridge between SimpleMDE buttons and Ember actions
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toolbar: [
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'bold', 'italic', 'heading', '|',
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'quote', 'unordered-list', 'ordered-list', '|',
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'link',
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{
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name: 'image',
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action: () => {
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this._openImageFileDialog();
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},
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className: 'fa fa-picture-o',
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title: 'Upload Image(s)'
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},
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'|',
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{
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name: 'preview',
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action: () => {
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this._togglePreview();
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},
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className: 'fa fa-eye no-disable',
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title: 'Toggle Preview'
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},
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{
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name: 'side-by-side',
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action: () => {
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this.send('toggleSplitScreen');
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},
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className: 'fa fa-columns no-disable no-mobile',
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title: 'Toggle Side-by-side Preview'
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},
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'|',
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{
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name: 'spellcheck',
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action: () => {
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this._toggleSpellcheck();
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},
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className: 'fa fa-check',
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title: 'Toggle Spellcheck'
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},
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{
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name: 'hemmingway',
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action: () => {
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this._toggleHemmingway();
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},
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className: 'fa fa-h-square',
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title: 'Toggle Hemmingway Mode'
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},
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{
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name: 'guide',
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action: () => {
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this.showMarkdownHelp();
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},
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className: 'fa fa-question-circle',
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title: 'Markdown Guide'
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}
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],
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// disable shortcuts for side-by-side and fullscreen because they
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// trigger interal SimpleMDE methods that will result in broken
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// layouts
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shortcuts: {
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toggleFullScreen: null,
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togglePreview: null,
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toggleSideBySide: null,
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drawImage: null
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},
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// only include the number of words in the status bar
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status: ['words']
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};
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// if unsplash is active insert the toolbar button after the image button
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// HACK: this settings/config dance is needed because the "override" only
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// happens when visiting the unsplash app settings route
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// TODO: move the override logic to the server, client knows too much
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// about which values should override others
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let unsplashConfig = this.get('config.unsplashAPI');
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let unsplashSettings = this.get('settings.unsplash');
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let unsplash = assign({}, unsplashConfig, unsplashSettings);
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if (unsplash.isActive) {
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let image = defaultOptions.toolbar.findBy('name', 'image');
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let index = defaultOptions.toolbar.indexOf(image) + 1;
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defaultOptions.toolbar.splice(index, 0, {
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name: 'unsplash',
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action: () => {
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this.send('toggleUnsplash');
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},
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className: 'fa fa-camera',
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title: 'Add Image from Unsplash'
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});
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}
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return assign(defaultOptions, options);
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}),
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shortcuts: {},
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init() {
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this._super(...arguments);
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let shortcuts = this.get('shortcuts');
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shortcuts[`${ctrlOrCmd}+shift+i`] = {action: 'openImageFileDialog'};
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shortcuts['ctrl+alt+h'] = {action: 'toggleHemmingway'};
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},
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// extract markdown content from single markdown card
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didReceiveAttrs() {
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this._super(...arguments);
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let mobiledoc = this.get('mobiledoc') || copy(BLANK_DOC, true);
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let uploadedImageUrls = this.get('uploadedImageUrls');
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if (!isEmpty(uploadedImageUrls) && uploadedImageUrls !== this._uploadedImageUrls) {
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this._uploadedImageUrls = uploadedImageUrls;
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// must be done afterRender to avoid double modify of mobiledoc in
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// a single render
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run.scheduleOnce('afterRender', this, () => {
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this._insertImages(uploadedImageUrls);
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// reset the file input so the same file can be selected again
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this.$('input[type=file]').val('');
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});
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}
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// eslint-disable-next-line ember-suave/prefer-destructuring
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let markdown = mobiledoc.cards[0][1].markdown;
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this.set('markdown', markdown);
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// use internal values to avoid updating bound values
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if (!isEmpty(this.get('isFullScreen'))) {
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this.set('_isFullScreen', this.get('isFullScreen'));
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}
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if (!isEmpty(this.get('isSplitScreen'))) {
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this.set('_isSplitScreen', this.get('isSplitScreen'));
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}
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this._updateButtonState();
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},
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didInsertElement() {
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this._super(...arguments);
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this.registerShortcuts();
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},
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_insertImages(urls) {
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let cm = this._editor.codemirror;
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// loop through urls and generate image markdown
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let images = urls.map((url) => {
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// plain url string, so extract filename from path
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if (typeOf(url) === 'string') {
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let filename = url.split('/').pop();
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let alt = filename;
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// if we have a normal filename.ext, set alt to filename -ext
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if (filename.lastIndexOf('.') > 0) {
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alt = filename.slice(0, filename.lastIndexOf('.'));
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}
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return ``;
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// full url object, use attrs we're given
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} else {
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let image = ``;
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if (url.credit) {
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image += `\n${url.credit}`;
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}
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return image;
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}
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});
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let text = images.join('\n\n');
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// clicking the image toolbar button will lose the selection so we use
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// the captured selection to re-select here
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if (this._imageInsertSelection) {
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// we want to focus but not re-position
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this.send('focusEditor', null);
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// re-select and clear the captured selection so drag/drop still
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// inserts at the correct place
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cm.setSelection(
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this._imageInsertSelection.anchor,
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this._imageInsertSelection.head
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);
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this._imageInsertSelection = null;
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}
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// focus editor and place cursor at end if not already focused
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if (!cm.hasFocus()) {
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this.send('focusEditor');
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text = `\n\n${text}\n\n`;
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}
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// insert at cursor or replace selection then position cursor at end
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// of inserted text
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cm.replaceSelection(text, 'end');
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},
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// mark the split-pane/full-screen/spellcheck buttons active when they're active
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_updateButtonState() {
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if (this._editor) {
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let sideBySideButton = this._editor.toolbarElements['side-by-side'];
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let spellcheckButton = this._editor.toolbarElements.spellcheck;
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let hemmingwayButton = this._editor.toolbarElements.hemmingway;
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if (sideBySideButton) {
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if (this.get('_isSplitScreen')) {
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sideBySideButton.classList.add('active');
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} else {
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sideBySideButton.classList.remove('active');
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}
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}
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if (spellcheckButton) {
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if (this._editor.codemirror.getOption('mode') === 'spell-checker') {
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spellcheckButton.classList.add('active');
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} else {
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spellcheckButton.classList.remove('active');
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}
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}
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if (hemmingwayButton) {
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if (this._isHemmingwayMode) {
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hemmingwayButton.classList.add('active');
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} else {
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hemmingwayButton.classList.remove('active');
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}
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}
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}
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},
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// set up the preview auto-update and scroll sync
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_connectSplitPreview() {
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let cm = this._editor.codemirror;
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let editor = this._editor;
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/* eslint-disable ember-suave/prefer-destructuring */
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let editorPane = this.$('.gh-markdown-editor-pane')[0];
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let previewPane = this.$('.gh-markdown-editor-preview')[0];
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let previewContent = this.$('.gh-markdown-editor-preview-content')[0];
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/* eslint-enable ember-suave/prefer-destructuring */
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this._editorPane = editorPane;
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this._previewPane = previewPane;
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this._previewContent = previewContent;
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// from SimpleMDE -------
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let sideBySideRenderingFunction = function() {
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previewContent.innerHTML = editor.options.previewRender(
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editor.value(),
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previewContent
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);
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};
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cm.sideBySideRenderingFunction = sideBySideRenderingFunction;
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sideBySideRenderingFunction();
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cm.on('update', cm.sideBySideRenderingFunction);
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// Refresh to fix selection being off (#309)
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cm.refresh();
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// ----------------------
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this._onEditorPaneScroll = this._scrollHandler.bind(this);
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editorPane.addEventListener('scroll', this._onEditorPaneScroll, false);
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this._scrollSync();
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},
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_scrollHandler() {
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if (!this._scrollSyncTicking) {
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requestAnimationFrame(this._scrollSync.bind(this));
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}
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this._scrollSyncTicking = true;
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},
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_scrollSync() {
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let editorPane = this._editorPane;
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let previewPane = this._previewPane;
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let height = editorPane.scrollHeight - editorPane.clientHeight;
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let ratio = parseFloat(editorPane.scrollTop) / height;
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let move = (previewPane.scrollHeight - previewPane.clientHeight) * ratio;
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previewPane.scrollTop = move;
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this._scrollSyncTicking = false;
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},
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_disconnectSplitPreview() {
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let cm = this._editor.codemirror;
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cm.off('update', cm.sideBySideRenderingFunction);
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cm.refresh();
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this._editorPane.removeEventListener('scroll', this._onEditorPaneScroll, false);
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delete this._previewPane;
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delete this._previewPaneContent;
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delete this._onEditorPaneScroll;
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},
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_openImageFileDialog({captureSelection = true} = {}) {
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if (captureSelection) {
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// capture the current selection before it's lost by clicking the
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// file input button
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this._imageInsertSelection = {
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anchor: this._editor.codemirror.getCursor('anchor'),
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head: this._editor.codemirror.getCursor('head')
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};
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}
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// trigger the dialog via gh-file-input, when a file is selected it will
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// trigger the onImageFilesSelected closure action
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this.$('input[type="file"]').click();
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},
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// wrap SimpleMDE's built-in preview toggle so that we can trigger a closure
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// action that can apply our own classes higher up in the DOM
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_togglePreview() {
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this.onPreviewToggle(!this._editor.isPreviewActive());
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this._editor.togglePreview();
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},
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_toggleSpellcheck() {
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let cm = this._editor.codemirror;
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if (cm.getOption('mode') === 'spell-checker') {
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cm.setOption('mode', 'gfm');
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} else {
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cm.setOption('mode', 'spell-checker');
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}
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this._updateButtonState();
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},
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_toggleHemmingway() {
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let cm = this._editor.codemirror;
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let extraKeys = cm.getOption('extraKeys');
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let notificationText = '';
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this._isHemmingwayMode = !this._isHemmingwayMode;
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if (this._isHemmingwayMode) {
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notificationText = '<span class="gh-notification-title">Hemingway Mode On:</span> Write now; edit later. Backspace disabled.';
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extraKeys.Backspace = function () {};
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} else {
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notificationText = '<span class="gh-notification-title">Hemingway Mode Off:</span> Normal editing restored.';
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delete extraKeys.Backspace;
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}
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cm.setOption('extraKeys', extraKeys);
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this._updateButtonState();
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cm.focus();
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this.get('notifications').showNotification(
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htmlSafe(notificationText),
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{key: 'editor.hemmingwaymode'}
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);
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},
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willDestroyElement() {
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if (this.get('_isSplitScreen')) {
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this._disconnectSplitPreview();
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}
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this.removeShortcuts();
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this._super(...arguments);
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},
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actions: {
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// put the markdown into a new mobiledoc card, trigger external update
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updateMarkdown(markdown) {
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let mobiledoc = copy(BLANK_DOC, true);
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mobiledoc.cards[0][1].markdown = markdown;
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this.onChange(mobiledoc);
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},
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// store a reference to the simplemde editor so that we can handle
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// focusing and image uploads
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setEditor(editor) {
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this._editor = editor;
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// disable CodeMirror's drag/drop handling as we want to handle that
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// in the parent gh-editor component
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this._editor.codemirror.setOption('dragDrop', false);
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// default to spellchecker being off
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this._editor.codemirror.setOption('mode', 'gfm');
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// HACK: move the toolbar & status bar elements outside of the
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// editor container so that they can be aligned in fixed positions
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let container = this.$().closest('.gh-editor').find('.gh-editor-footer');
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this._toolbar = this.$('.editor-toolbar');
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this._statusbar = this.$('.editor-statusbar');
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this._toolbar.appendTo(container);
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this._statusbar.appendTo(container);
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this._updateButtonState();
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},
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// used by the title input when the TAB or ENTER keys are pressed
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focusEditor(position = 'bottom') {
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this._editor.codemirror.focus();
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if (position === 'bottom') {
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this._editor.codemirror.execCommand('goDocEnd');
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} else if (position === 'top') {
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this._editor.codemirror.execCommand('goDocStart');
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}
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return false;
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},
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// HACK FIXME (PLEASE):
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// - clicking toolbar buttons will cause the editor to lose focus
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// - this is painful because we often want to know if the editor has focus
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// so that we can insert images and so on in the correct place
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// - the blur event will always fire before the button action is triggered 😞
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// - to work around this we track focus state manually and set it to false
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// after an arbitrary period that's long enough to allow the button action
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// to trigger first
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// - this _may_ well have unknown issues due to browser differences,
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// variations in performance, moon cycles, sun spots, or cosmic rays
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// - here be 🐲
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// - (please let it work 🙏)
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updateFocusState(focused) {
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if (focused) {
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this._editorFocused = true;
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} else {
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run.later(this, function () {
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this._editorFocused = false;
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}, 100);
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}
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},
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openImageFileDialog() {
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let captureSelection = this._editor.codemirror.hasFocus();
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this._openImageFileDialog({captureSelection});
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},
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toggleUnsplash() {
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if (this.get('_showUnsplash')) {
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return this.toggleProperty('_showUnsplash');
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}
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// capture current selection before it's lost by clicking toolbar btn
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if (this._editorFocused) {
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this._imageInsertSelection = {
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anchor: this._editor.codemirror.getCursor('anchor'),
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head: this._editor.codemirror.getCursor('head')
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};
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}
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this.toggleProperty('_showUnsplash');
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},
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insertUnsplashPhoto(photo) {
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let image = {
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alt: photo.description || '',
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url: photo.urls.regular,
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credit: `<small>Photo by [${photo.user.name}](${photo.user.links.html}?utm_source=ghost&utm_medium=referral&utm_campaign=api-credit) / [Unsplash](https://unsplash.com/?utm_source=ghost&utm_medium=referral&utm_campaign=api-credit)</small>`
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};
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this._insertImages([image]);
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},
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toggleFullScreen() {
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let isFullScreen = !this.get('_isFullScreen');
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this.set('_isFullScreen', isFullScreen);
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this._updateButtonState();
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this.onFullScreenToggle(isFullScreen);
|
|
|
|
// leave split screen when exiting full screen mode
|
|
if (!isFullScreen && this.get('_isSplitScreen')) {
|
|
this.send('toggleSplitScreen');
|
|
}
|
|
},
|
|
|
|
toggleSplitScreen() {
|
|
let isSplitScreen = !this.get('_isSplitScreen');
|
|
let previewButton = this._editor.toolbarElements.preview;
|
|
|
|
this.set('_isSplitScreen', isSplitScreen);
|
|
this._updateButtonState();
|
|
|
|
// set up the preview rendering and scroll sync
|
|
// afterRender is needed so that necessary components have been
|
|
// added/removed and editor pane length has settled
|
|
if (isSplitScreen) {
|
|
// disable the normal SimpleMDE preview if it's active
|
|
if (this._editor.isPreviewActive()) {
|
|
let preview = this._editor.toolbar.find((button) => {
|
|
return button.name === 'preview';
|
|
});
|
|
|
|
preview.action(this._editor);
|
|
}
|
|
|
|
if (previewButton) {
|
|
previewButton.classList.add('disabled');
|
|
}
|
|
|
|
run.scheduleOnce('afterRender', this, this._connectSplitPreview);
|
|
} else {
|
|
if (previewButton) {
|
|
previewButton.classList.remove('disabled');
|
|
}
|
|
|
|
run.scheduleOnce('afterRender', this, this._disconnectSplitPreview);
|
|
}
|
|
|
|
this.onSplitScreenToggle(isSplitScreen);
|
|
|
|
// go fullscreen when entering split screen mode
|
|
this.send('toggleFullScreen');
|
|
},
|
|
|
|
toggleHemmingway() {
|
|
this._toggleHemmingway();
|
|
},
|
|
|
|
// put the toolbar/statusbar elements back so that SimpleMDE doesn't throw
|
|
// errors when it tries to remove them
|
|
destroyEditor() {
|
|
let container = this.$('.gh-markdown-editor-pane');
|
|
this._toolbar.appendTo(container);
|
|
this._statusbar.appendTo(container);
|
|
this._editor = null;
|
|
}
|
|
}
|
|
});
|