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d6a6fc3d7c
refs https://github.com/TryGhost/Ghost/issues/9505 - ListItem sections have a parent rather than a prev section so we need to look for a section before the parent section when determining if the cursor is at the beginning of the doc for <kbd>Up</kbd> and <kbd>Left</kbd> key handling
759 lines
26 KiB
JavaScript
759 lines
26 KiB
JavaScript
/*
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* Based on ember-mobiledoc-editor
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* https://github.com/bustle/ember-mobiledoc-editor
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*/
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import Component from '@ember/component';
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import Editor from 'mobiledoc-kit/editor/editor';
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import Ember from 'ember';
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import EmberObject from '@ember/object';
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import defaultAtoms from '../options/atoms';
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import defaultCards from '../options/cards';
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import layout from '../templates/components/koenig-editor';
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import registerKeyCommands from '../options/key-commands';
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import registerTextExpansions from '../options/text-expansions';
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import {A} from '@ember/array';
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import {MOBILEDOC_VERSION} from 'mobiledoc-kit/renderers/mobiledoc';
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import {assign} from '@ember/polyfills';
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import {camelize, capitalize} from '@ember/string';
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import {computed} from '@ember/object';
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import {copy} from '@ember/object/internals';
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import {run} from '@ember/runloop';
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export const ADD_CARD_HOOK = 'addComponent';
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export const REMOVE_CARD_HOOK = 'removeComponent';
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// used in test helpers to grab a reference to the underlying mobiledoc editor
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export const TESTING_EXPANDO_PROPERTY = '__mobiledoc_kit_editor';
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// blank doc contains a single empty paragraph so that there's some content for
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// the cursor to start in
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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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sections: [
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[1, 'p', [
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[0, [], 0, '']
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]]
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]
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};
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// map card names to component names
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export const CARD_COMPONENT_MAP = {
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hr: 'koenig-card-hr',
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image: 'koenig-card-image',
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markdown: 'koenig-card-markdown',
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'card-markdown': 'koenig-card-markdown', // backwards-compat with markdown editor
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html: 'koenig-card-html'
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};
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const CURSOR_BEFORE = -1;
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const CURSOR_AFTER = 1;
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const NO_CURSOR_MOVEMENT = 0;
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function arrayToMap(array) {
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let map = Object.create(null);
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array.forEach((key) => {
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if (key) { // skip undefined/falsy key values
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key = `is${capitalize(camelize(key))}`;
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map[key] = true;
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}
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});
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return map;
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}
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export default Component.extend({
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layout,
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tagName: 'article',
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classNames: ['koenig-editor'],
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// public attrs
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mobiledoc: null,
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placeholder: 'Write here...',
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autofocus: false,
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spellcheck: true,
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options: null,
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scrollContainer: '',
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// internal properties
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editor: null,
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activeMarkupTagNames: null,
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activeSectionTagNames: null,
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selectedRange: null,
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componentCards: null,
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linkRange: null,
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// private properties
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_localMobiledoc: null,
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_upstreamMobiledoc: null,
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_startedRunLoop: false,
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_lastIsEditingDisabled: false,
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_isRenderingEditor: false,
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_selectedCard: null,
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// closure actions
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willCreateEditor() {},
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didCreateEditor() {},
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onChange() {},
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cursorDidExitAtTop() {},
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/* computed properties -------------------------------------------------- */
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// merge in named options with the `options` property data-bag
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// TODO: what is the `options` property data-bag and when/where does it get set?
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editorOptions: computed(function () {
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let options = this.get('options') || {};
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let atoms = this.get('atoms') || [];
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let cards = this.get('cards') || [];
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// add our default atoms and cards, we want the defaults to be first so
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// that they can be overridden by any passed-in atoms or cards.
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// Use Array.concat to avoid modifying any passed in array references
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atoms = Array.concat(defaultAtoms, atoms);
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cards = Array.concat(defaultCards, cards);
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return assign({
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placeholder: this.get('placeholder'),
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spellcheck: this.get('spellcheck'),
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autofocus: this.get('autofocus'),
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atoms,
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cards
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}, options);
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}),
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/* lifecycle hooks ------------------------------------------------------ */
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init() {
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this._super(...arguments);
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// set a blank mobiledoc if we didn't receive anything
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let mobiledoc = this.get('mobiledoc');
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if (!mobiledoc) {
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mobiledoc = BLANK_DOC;
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this.set('mobiledoc', mobiledoc);
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}
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this.set('componentCards', A([]));
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this.set('activeMarkupTagNames', {});
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this.set('activeSectionTagNames', {});
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this._startedRunLoop = false;
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},
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willRender() {
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// use a default mobiledoc. If there are no changes then return early
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let mobiledoc = this.get('mobiledoc') || BLANK_DOC;
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let mobiledocIsSame =
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(this._localMobiledoc && this._localMobiledoc === mobiledoc) ||
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(this._upstreamMobiledoc && this._upstreamMobiledoc === mobiledoc);
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let isEditingDisabledIsSame =
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this._lastIsEditingDisabled === this.get('isEditingDisabled');
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// no change to mobiledoc, no need to recreate the editor
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if (mobiledocIsSame && isEditingDisabledIsSame) {
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return;
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}
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// update our internal references
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this._lastIsEditingDisabled = this.get('isEditingDisabled');
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this._upstreamMobiledoc = mobiledoc;
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this._localMobiledoc = null;
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// trigger the willCreateEditor closure action
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this.willCreateEditor();
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// teardown any old editor that might be around
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let editor = this.get('editor');
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if (editor) {
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editor.destroy();
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}
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// create a new editor
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let editorOptions = this.get('editorOptions');
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editorOptions.mobiledoc = mobiledoc;
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let componentHooks = {
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// triggered when a card section is added to the mobiledoc
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[ADD_CARD_HOOK]: ({env, options, payload}) => {
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let cardId = Ember.uuid();
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let cardName = env.name;
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let componentName = CARD_COMPONENT_MAP[cardName];
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// the desination element is the container that gets rendered
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// inside the editor, once rendered we use {{-in-element}} to
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// wormhole in the actual ember component
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let destinationElementId = `koenig-editor-card-${cardId}`;
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let destinationElement = document.createElement('div');
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destinationElement.id = destinationElementId;
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// the payload must be copied to avoid sharing the reference
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payload = copy(payload, true);
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// all of the properties that will be passed through to the
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// component cards via the template
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let card = EmberObject.create({
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destinationElement,
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destinationElementId,
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cardName,
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componentName,
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payload,
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env,
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options,
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editor,
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postModel: env.postModel,
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isSelected: false,
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isEditing: false
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});
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// after render we render the full ember card via {{-in-element}}
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run.schedule('afterRender', () => {
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this.get('componentCards').pushObject(card);
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});
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// render the destination element inside the editor
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return {card, element: destinationElement};
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},
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// triggered when a card section is removed from the mobiledoc
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[REMOVE_CARD_HOOK]: (card) => {
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this.get('componentCards').removeObject(card);
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}
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};
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editorOptions.cardOptions = componentHooks;
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editor = new Editor(editorOptions);
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// set up key commands and text expansions (MD conversion)
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// TODO: this will override any passed in options, we should allow the
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// default behaviour to be overridden by addon consumers
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registerKeyCommands(editor);
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registerTextExpansions(editor);
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// the cursor is always positioned after a selected card so DELETE wont
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// work to remove the card like BACKSPACE does. Add a custom command to
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// override the default behaviour when a card is selected
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editor.registerKeyCommand({
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str: 'DEL',
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run: run.bind(this, this.handleDelKey)
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}),
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// by default mobiledoc-kit will remove the selected card but replace it
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// with a blank paragraph, we want the cursor to go to the previous
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// section instead
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editor.registerKeyCommand({
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str: 'BACKSPACE',
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run: run.bind(this, this.handleBackspaceKey)
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}),
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editor.registerKeyCommand({
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str: 'UP',
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run: run.bind(this, this.handleUpKey)
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});
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editor.registerKeyCommand({
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str: 'LEFT',
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run: run.bind(this, this.handleLeftKey)
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});
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editor.registerKeyCommand({
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str: 'META+ENTER',
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run: run.bind(this, this.handleCmdEnter)
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});
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// set up editor hooks
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editor.willRender(() => {
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// The editor's render/rerender will happen after this `editor.willRender`,
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// so we explicitly start a runloop here if there is none, so that the
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// add/remove card hooks happen inside a runloop.
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// When pasting text that gets turned into a card, for example,
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// the add card hook would run outside the runloop if we didn't begin a new
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// one now.
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if (!run.currentRunLoop) {
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this._startedRunLoop = true;
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run.begin();
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}
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});
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editor.didRender(() => {
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// if we had explicitly started a runloop in `editor.willRender`,
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// we must explicitly end it here
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if (this._startedRunLoop) {
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this._startedRunLoop = false;
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run.end();
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}
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});
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editor.postDidChange(() => {
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run.join(() => {
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this.postDidChange(editor);
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});
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});
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editor.cursorDidChange(() => {
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run.join(() => {
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this.cursorDidChange(editor);
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});
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});
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editor.inputModeDidChange(() => {
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if (this.isDestroyed) {
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return;
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}
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run.join(() => {
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this.inputModeDidChange(editor);
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});
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});
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if (this.get('isEditingDisabled')) {
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editor.disableEditing();
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}
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this.set('editor', editor);
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this.didCreateEditor(editor);
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},
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// our ember component has rendered, now we need to render the mobiledoc
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// editor itself if necessary
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didRender() {
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this._super(...arguments);
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let editor = this.get('editor');
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if (!editor.hasRendered) {
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let editorElement = this.element.querySelector('.koenig-editor__editor');
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this._isRenderingEditor = true;
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editor.render(editorElement);
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this._isRenderingEditor = false;
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}
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},
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willDestroyElement() {
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let editor = this.get('editor');
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editor.destroy();
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this._super(...arguments);
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},
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actions: {
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toggleMarkup(markupTagName) {
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let editor = this.get('editor');
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editor.toggleMarkup(markupTagName);
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},
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toggleSection(sectionTagName) {
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let editor = this.get('editor');
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editor.toggleSection(sectionTagName);
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},
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replaceWithCardSection(cardName, range) {
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let editor = this.get('editor');
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let {head: {section}} = range;
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editor.run((postEditor) => {
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let {builder} = postEditor;
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let card = builder.createCardSection(cardName);
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let needsTrailingParagraph = !section.next;
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postEditor.replaceSection(section, card);
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if (needsTrailingParagraph) {
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let newSection = postEditor.builder.createMarkupSection('p');
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postEditor.insertSectionAtEnd(newSection);
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postEditor.setRange(newSection.tailPosition());
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}
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});
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// cards are pushed on to the `componentCards` array so we can
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// assume that the last card in the list is the one we want to
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// select. Needs to be scheduled afterRender so that the new card
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// is actually present
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run.schedule('afterRender', this, function () {
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let card = this.get('componentCards.lastObject');
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this.editCard(card);
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});
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},
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selectCard(card) {
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this.selectCard(card);
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},
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editCard(card) {
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this.editCard(card);
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},
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deselectCard(card) {
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this.deselectCard(card);
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},
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// range should be set to the full extent of the selection or the
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// appropriate <a> markup. If there's a selection when the link edit
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// component renders it will re-select when finished which should
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// trigger the normal toolbar
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editLink(range) {
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this.set('linkRange', range);
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},
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cancelEditLink() {
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this.set('linkRange', null);
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},
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deleteCard(card, cursorMovement = NO_CURSOR_MOVEMENT) {
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this._deleteCard(card, cursorMovement);
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},
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moveCursorToPrevSection(card) {
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let section = this._getSectionFromCard(card);
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if (section.prev) {
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this.deselectCard(card);
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this._moveCaretToTailOfSection(section.prev, false);
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}
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},
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moveCursorToNextSection(card) {
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let section = this._getSectionFromCard(card);
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if (section.next) {
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this.deselectCard(card);
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this._moveCaretToHeadOfSection(section.next, false);
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} else {
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this.send('addParagraphAfterCard', card);
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}
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},
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addParagraphAfterCard(card) {
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let editor = this.get('editor');
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let section = this._getSectionFromCard(card);
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let collection = section.parent.sections;
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let nextSection = section.next;
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this.deselectCard(card);
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editor.run((postEditor) => {
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let {builder} = postEditor;
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let newPara = builder.createMarkupSection('p');
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if (nextSection) {
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postEditor.insertSectionBefore(collection, newPara, nextSection);
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} else {
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postEditor.insertSectionAtEnd(newPara);
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}
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postEditor.setRange(newPara.tailPosition());
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});
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}
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},
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/* public methods ------------------------------------------------------- */
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postDidChange(editor) {
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let serializeVersion = this.get('serializeVersion');
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let updatedMobiledoc = editor.serialize(serializeVersion);
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this._localMobiledoc = updatedMobiledoc;
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// trigger closure action
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this.onChange(updatedMobiledoc);
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},
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cursorDidChange(editor) {
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let {head, isCollapsed, head: {section}} = editor.range;
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// sometimes we perform a programatic edit that causes a cursor change
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// but we actually want to skip the default behaviour because we've
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// already handled it, e.g. on card insertion, manual card selection
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if (this._skipCursorChange) {
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this._skipCursorChange = false;
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this.set('selectedRange', editor.range);
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return;
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}
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// ignore the cursor moving from one end to the other within a selected
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// card section, clicking and other interactions within a card can cause
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// this to happen and we don't want to select/deselect accidentally.
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// See the up/down/left/right key handlers for the card selection
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if (this._selectedCard && this._selectedCard.postModel === section) {
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return;
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}
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// select the card if the cursor is on the before/after ‌ char
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if (section && isCollapsed && section.type === 'card-section') {
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if (head.offset === 0 || head.offset === 1) {
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// select card after render to ensure that our componentCards
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// attr is populated
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run.schedule('afterRender', this, () => {
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let card = this._getCardFromSection(section);
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this.selectCard(card);
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this.set('selectedRange', editor.range);
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});
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return;
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}
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}
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// deselect any selected card because the cursor is no longer on a card
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if (this._selectedCard) {
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this.deselectCard(this._selectedCard);
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}
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// pass the selected range through to the toolbar + menu components
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this.set('selectedRange', editor.range);
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},
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// fired when the active section(s) or markup(s) at the current cursor
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// position or selection have changed. We use this event to update the
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// activeMarkup/section tag lists which control button states in our popup
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// toolbar
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inputModeDidChange(editor) {
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let markupTags = arrayToMap(editor.activeMarkups.map(m => m.tagName));
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// editor.activeSections are leaf sections.
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// Map parent section tag names (e.g. 'p', 'ul', 'ol') so that list buttons
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// are updated.
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// eslint-disable-next-line no-confusing-arrow
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let sectionParentTagNames = editor.activeSections.map(s => s.isNested ? s.parent.tagName : s.tagName);
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let sectionTags = arrayToMap(sectionParentTagNames);
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// Avoid updating this component's properties synchronously while
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// rendering the editor (after rendering the component) because it
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// causes Ember to display deprecation warnings
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if (this._isRenderingEditor) {
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run.schedule('afterRender', () => {
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this.set('activeMarkupTagNames', markupTags);
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this.set('activeSectionTagNames', sectionTags);
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});
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} else {
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this.set('activeMarkupTagNames', markupTags);
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this.set('activeSectionTagNames', sectionTags);
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}
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},
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handleBackspaceKey() {
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let {isCollapsed, head: {offset, section}} = this.editor.range;
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// if a card is selected we should delete the card then place the cursor
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// at the end of the previous section
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if (this._selectedCard) {
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let cursorPosition = section.prev ? CURSOR_BEFORE : CURSOR_AFTER;
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this._deleteCard(this._selectedCard, cursorPosition);
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return;
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}
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// if the caret is at the beginning of the doc, on a blank para, and
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// there are more sections then delete the para and trigger the
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// `cursorDidExitAtTop` closure action
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let isFirstSection = section === section.parent.sections.head;
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|
if (isFirstSection && isCollapsed && offset === 0 && (section.isBlank || section.text === '') && section.next) {
|
|
this.editor.run((postEditor) => {
|
|
postEditor.removeSection(section);
|
|
});
|
|
|
|
// allow default behaviour which will trigger `cursorDidChange` and
|
|
// fire our `cursorDidExitAtTop` action
|
|
return;
|
|
}
|
|
|
|
// if the section about to be deleted by a backspace is a card then
|
|
// actually delete the card rather than selecting it.
|
|
// However, if the current paragraph is blank then delete the paragraph
|
|
// instead - allows blank paragraphs between cards to be deleted and
|
|
// feels more natural
|
|
if (isCollapsed && offset === 0 && section.prev && section.prev.type === 'card-section' && !section.isBlank) {
|
|
let card = this._getCardFromSection(section.prev);
|
|
this._deleteCard(card, CURSOR_AFTER);
|
|
return;
|
|
}
|
|
|
|
return false;
|
|
},
|
|
|
|
handleDelKey() {
|
|
let {isCollapsed, head: {offset, section}} = this.editor.range;
|
|
|
|
// if a card is selected we should delete the card then place the cursor
|
|
// at the beginning of the next section or select the following card
|
|
if (this._selectedCard) {
|
|
let selectNextCard = section.next.type === 'card-section';
|
|
let nextCard = this._getCardFromSection(section.next);
|
|
|
|
this._deleteCard(this._selectedCard, CURSOR_AFTER);
|
|
|
|
if (selectNextCard) {
|
|
this.selectCard(nextCard);
|
|
}
|
|
return;
|
|
}
|
|
|
|
// if the section about to be deleted by a DEL is a card then actually
|
|
// delete the card rather than selecting it
|
|
// However, if the current paragraph is blank then delete the paragraph
|
|
// instead - allows blank paragraphs between cards to be deleted and
|
|
// feels more natural
|
|
if (isCollapsed && offset === section.length && section.next && section.next.type === 'card-section' && !section.isBlank) {
|
|
let card = this._getCardFromSection(section.next);
|
|
this._deleteCard(card, CURSOR_BEFORE);
|
|
return;
|
|
}
|
|
|
|
return false;
|
|
},
|
|
|
|
// trigger a closure action to indicate that the caret "left" the top of
|
|
// the editor canvas when pressing UP with the caret at the beginning of
|
|
// the doc
|
|
handleUpKey(editor) {
|
|
let {isCollapsed, head: {offset, section}} = editor.range;
|
|
let prevSection = section.isListItem ? section.parent.prev : section.prev;
|
|
|
|
if (isCollapsed && offset === 0 && !prevSection) {
|
|
this.cursorDidExitAtTop();
|
|
}
|
|
|
|
return false;
|
|
},
|
|
|
|
handleLeftKey(editor) {
|
|
let {isCollapsed, head: {offset, section}} = editor.range;
|
|
|
|
// trigger a closure action to indicate that the caret "left" the top of
|
|
// the editor canvas if the caret is at the very beginning of the doc
|
|
let prevSection = section.isListItem ? section.parent.prev : section.prev;
|
|
if (isCollapsed && offset === 0 && !prevSection) {
|
|
this.cursorDidExitAtTop();
|
|
return;
|
|
}
|
|
|
|
// if we have a selected card move the caret to end of the previous
|
|
// section because the cursor will likely be at the end of the card
|
|
// section meaning the default behaviour would move the cursor to the
|
|
// beginning and require two key presses instead of one
|
|
if (this._selectedCard && this._selectedCard.postModel === section) {
|
|
this._moveCaretToTailOfSection(section.prev, false);
|
|
return;
|
|
}
|
|
|
|
return false;
|
|
},
|
|
|
|
// CMD+ENTER is our keyboard shortcut for putting a selected card into
|
|
// edit mode
|
|
handleCmdEnter() {
|
|
if (this._selectedCard) {
|
|
this.editCard(this._selectedCard);
|
|
return;
|
|
}
|
|
|
|
return false;
|
|
},
|
|
|
|
selectCard(card, isEditing = false) {
|
|
// no-op if card is already selected
|
|
if (card === this._selectedCard && isEditing === card.isEditing) {
|
|
return;
|
|
}
|
|
|
|
// deselect any already selected card
|
|
if (this._selectedCard && card !== this._selectedCard) {
|
|
this.deselectCard(this._selectedCard);
|
|
}
|
|
|
|
// setting a card as selected trigger's the cards didReceiveAttrs
|
|
// hook where the actual selection state change happens. Put into edit
|
|
// mode if necessary
|
|
card.setProperties({
|
|
isEditing,
|
|
isSelected: true
|
|
});
|
|
this._selectedCard = card;
|
|
|
|
// hide the cursor and place it after the card so that ENTER can
|
|
// create a new paragraph and cursorDidExitAtTop gets fired on LEFT
|
|
// if the card is at the top of the document
|
|
this._hideCursor();
|
|
let section = this._getSectionFromCard(card);
|
|
this._moveCaretToTailOfSection(section);
|
|
},
|
|
|
|
editCard(card) {
|
|
// no-op if card is already being edited
|
|
if (card === this._selectedCard && card.isEditing) {
|
|
return;
|
|
}
|
|
|
|
// select the card with edit mode
|
|
this.selectCard(card, true);
|
|
},
|
|
|
|
deselectCard(card) {
|
|
card.set('isEditing', false);
|
|
card.set('isSelected', false);
|
|
this._selectedCard = null;
|
|
this._showCursor();
|
|
},
|
|
|
|
/* internal methods ----------------------------------------------------- */
|
|
|
|
_getCardFromSection(section) {
|
|
if (!section || section.type !== 'card-section') {
|
|
return;
|
|
}
|
|
|
|
let cardId = section.renderNode.element.querySelector('.__mobiledoc-card').firstChild.id;
|
|
let cards = this.get('componentCards');
|
|
|
|
return cards.findBy('destinationElementId', cardId);
|
|
},
|
|
|
|
_getSectionFromCard(card) {
|
|
return card.env.postModel;
|
|
},
|
|
|
|
_moveCaretToHeadOfSection(section, skipCursorChange = true) {
|
|
this._moveCaretToSection('head', section, skipCursorChange);
|
|
},
|
|
|
|
_moveCaretToTailOfSection(section, skipCursorChange = true) {
|
|
this._moveCaretToSection('tail', section, skipCursorChange);
|
|
},
|
|
|
|
_moveCaretToSection(position, section, skipCursorChange = true) {
|
|
this.editor.run((postEditor) => {
|
|
let sectionPosition = position === 'head' ? section.headPosition() : section.tailPosition();
|
|
let range = sectionPosition.toRange();
|
|
|
|
// don't trigger another cursor change selection after selecting
|
|
if (skipCursorChange && !range.isEqual(this.editor.range)) {
|
|
this._skipCursorChange = true;
|
|
}
|
|
|
|
postEditor.setRange(range);
|
|
});
|
|
},
|
|
|
|
_deleteCard(card, cursorDirection) {
|
|
this.editor.run((postEditor) => {
|
|
let section = card.env.postModel;
|
|
let nextPosition;
|
|
|
|
if (cursorDirection === CURSOR_BEFORE) {
|
|
nextPosition = section.prev.tailPosition();
|
|
} else {
|
|
nextPosition = section.next.headPosition();
|
|
}
|
|
|
|
postEditor.removeSection(section);
|
|
|
|
if (cursorDirection !== NO_CURSOR_MOVEMENT) {
|
|
postEditor.setRange(nextPosition);
|
|
}
|
|
});
|
|
},
|
|
|
|
_hideCursor() {
|
|
this.editor.element.style.caretColor = 'transparent';
|
|
},
|
|
|
|
_showCursor() {
|
|
this.editor.element.style.caretColor = 'auto';
|
|
},
|
|
|
|
// store a reference to the editor for the acceptance test helpers
|
|
_setExpandoProperty(editor) {
|
|
if (this.element && Ember.testing) {
|
|
this.element[TESTING_EXPANDO_PROPERTY] = editor;
|
|
}
|
|
}
|
|
});
|