Ghost/ghost/admin/app/components/gh-simplemde.js
Kevin Ansfield c722c83a6e 🐛 Fixed editor crashing when leaving a markdown card's edit mode
no issue
- a change in Ember 3.10's rendering has resulting in the component's element being removed before the `{{gh-markdown-editor}}`'s cleanup action is run which meant that we were trying to run `.querySelector` on `undefined`
- removes the code which moved toolbar elements around because it hasn't been used since we moved to Koenig, this meant that the cleanup action could also be removed
2019-05-23 13:43:01 +01:00

116 lines
3.2 KiB
JavaScript

/* global SimpleMDE */
import TextArea from '@ember/component/text-area';
import config from 'ghost-admin/config/environment';
import {assign} from '@ember/polyfills';
import {computed} from '@ember/object';
import {isEmpty} from '@ember/utils';
import {inject as service} from '@ember/service';
import {task} from 'ember-concurrency';
export default TextArea.extend({
lazyLoader: service(),
// Public attributes
autofocus: false,
options: null,
value: null,
placeholder: '',
// Private
_editor: null,
// Closure actions
onChange() {},
onEditorInit() {},
onEditorDestroy() {},
// default SimpleMDE options, see docs for available config:
// https://github.com/sparksuite/simplemde-markdown-editor#configuration
defaultOptions: computed(function () {
return {
autofocus: this.autofocus,
indentWithTabs: false,
placeholder: this.placeholder,
tabSize: 4
};
}),
init() {
this._super(...arguments);
if (isEmpty(this.options)) {
this.set('options', {});
}
},
// update the editor when the value property changes from the outside
didReceiveAttrs() {
this._super(...arguments);
if (isEmpty(this._editor)) {
return;
}
// compare values before forcing a content reset to avoid clobbering
// the undo behaviour
if (this.value !== this._editor.value()) {
let cursor = this._editor.codemirror.getDoc().getCursor();
this._editor.value(this.value);
this._editor.codemirror.getDoc().setCursor(cursor);
}
},
// instantiate the editor with the contents of value
didInsertElement() {
this._super(...arguments);
this.initSimpleMDE.perform();
},
willDestroyElement() {
this._editor.toTextArea();
delete this._editor;
this._super(...arguments);
},
initSimpleMDE: task(function* () {
yield this.lazyLoader.loadScript('simplemde', 'assets/simplemde/simplemde.js');
let editorOptions = assign(
{element: document.getElementById(this.elementId)},
this.defaultOptions,
this.options
);
// disable spellchecker when testing so that the exterally loaded plugin
// doesn't fail
if (config.environment === 'test') {
editorOptions.spellChecker = false;
}
this._editor = new SimpleMDE(editorOptions);
this._editor.value(this.value || '');
this._editor.codemirror.on('change', (instance, changeObj) => {
// avoid a "modified x twice in a single render" error that occurs
// when the underlying value is completely swapped out
if (changeObj.origin !== 'setValue') {
this.onChange(this._editor.value());
}
});
this._editor.codemirror.on('focus', () => {
this.onFocus();
});
this._editor.codemirror.on('blur', () => {
this.onBlur();
});
if (this.autofocus) {
this._editor.codemirror.execCommand('goDocEnd');
}
this.onEditorInit(this._editor);
})
});