659 Zeilen
19 KiB
JavaScript
659 Zeilen
19 KiB
JavaScript
/* eslint no-undef: 0 */
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/*global Mousetrap:true */
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import { default as computed, on, observes } from 'ember-addons/ember-computed-decorators';
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import { cookAsync } from '../lib/text-lite';
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import { getRegister } from 'discourse-common/lib/get-owner';
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import { siteDir } from 'discourse/lib/text-direction';
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import { determinePostReplaceSelection, clipboardData } from '../lib/utilities-lite';
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import toMarkdown from 'discourse/lib/to-markdown';
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// Our head can be a static string or a function that returns a string
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// based on input (like for numbered lists).
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function getHead(head, prev) {
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if (typeof head === "string") {
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return [head, head.length];
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} else {
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return getHead(head(prev));
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}
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}
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function getButtonLabel(labelKey, defaultLabel) {
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// use the Font Awesome icon if the label matches the default
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return I18n.t(labelKey) === defaultLabel ? null : labelKey;
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}
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const OP = {
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NONE: 0,
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REMOVED: 1,
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ADDED: 2
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};
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const FOUR_SPACES_INDENT = '4-spaces-indent';
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const _createCallbacks = [];
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const isInside = (text, regex) => {
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const matches = text.match(regex);
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return matches && (matches.length % 2);
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};
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class Toolbar {
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constructor() {
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this.shortcuts = {};
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this.groups = [
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{group: 'fontStyles', buttons: []},
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{group: 'insertions', buttons: []},
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{group: 'extras', buttons: []}
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];
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this.addButton({
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trimLeading: true,
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id: 'bold',
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group: 'fontStyles',
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icon: 'bold',
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label: getButtonLabel('wizard_composer.bold_label', 'B'),
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shortcut: 'B',
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perform: e => e.applySurround('**', '**', 'bold_text')
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});
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this.addButton({
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trimLeading: true,
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id: 'italic',
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group: 'fontStyles',
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icon: 'italic',
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label: getButtonLabel('wizard_composer.italic_label', 'I'),
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shortcut: 'I',
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perform: e => e.applySurround('_', '_', 'italic_text')
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});
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this.addButton({
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id: 'quote',
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group: 'insertions',
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icon: 'quote-right',
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shortcut: 'Shift+9',
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perform: e => e.applyList(
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'> ',
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'blockquote_text',
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{ applyEmptyLines: true, multiline: true }
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)
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});
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this.addButton({id: 'code', group: 'insertions', shortcut: 'Shift+C', action: 'formatCode'});
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this.addButton({
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id: 'bullet',
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group: 'extras',
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icon: 'list-ul',
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shortcut: 'Shift+8',
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title: 'wizard_composer.ulist_title',
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perform: e => e.applyList('* ', 'list_item')
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});
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this.addButton({
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id: 'list',
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group: 'extras',
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icon: 'list-ol',
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shortcut: 'Shift+7',
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title: 'wizard_composer.olist_title',
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perform: e => e.applyList(i => !i ? "1. " : `${parseInt(i) + 1}. `, 'list_item')
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});
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if (Wizard.SiteSettings.support_mixed_text_direction) {
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this.addButton({
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id: 'toggle-direction',
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group: 'extras',
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icon: 'exchange',
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shortcut: 'Shift+6',
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title: 'wizard_composer.toggle_direction',
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perform: e => e.toggleDirection(),
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});
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}
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this.groups[this.groups.length-1].lastGroup = true;
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}
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addButton(button) {
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const g = this.groups.findBy('group', button.group);
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if (!g) {
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throw `Couldn't find toolbar group ${button.group}`;
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}
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const createdButton = {
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id: button.id,
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className: button.className || button.id,
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label: button.label,
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icon: button.label ? null : button.icon || button.id,
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action: button.action || 'toolbarButton',
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perform: button.perform || function() { },
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trimLeading: button.trimLeading,
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popupMenu: button.popupMenu || false
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};
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if (button.sendAction) {
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createdButton.sendAction = button.sendAction;
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}
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const title = I18n.t(button.title || `wizard_composer.${button.id}_title`);
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if (button.shortcut) {
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const mac = /Mac|iPod|iPhone|iPad/.test(navigator.platform);
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const mod = mac ? 'Meta' : 'Ctrl';
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var shortcutTitle = `${mod}+${button.shortcut}`;
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// Mac users are used to glyphs for shortcut keys
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if (mac) {
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shortcutTitle = shortcutTitle
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.replace('Shift', "\u21E7")
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.replace('Meta', "\u2318")
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.replace('Alt', "\u2325")
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.replace(/\+/g, '');
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} else {
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shortcutTitle = shortcutTitle
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.replace('Shift', I18n.t('shortcut_modifier_key.shift'))
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.replace('Ctrl', I18n.t('shortcut_modifier_key.ctrl'))
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.replace('Alt', I18n.t('shortcut_modifier_key.alt'));
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}
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createdButton.title = `${title} (${shortcutTitle})`;
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this.shortcuts[`${mod}+${button.shortcut}`.toLowerCase()] = createdButton;
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} else {
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createdButton.title = title;
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}
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if (button.unshift) {
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g.buttons.unshift(createdButton);
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} else {
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g.buttons.push(createdButton);
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}
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}
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}
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export default Ember.Component.extend({
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classNames: ['d-editor'],
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ready: false,
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lastSel: null,
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_mouseTrap: null,
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showPreview: false,
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_readyNow() {
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this.set('ready', true);
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if (this.get('autofocus')) {
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this.$('textarea').focus();
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}
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},
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init() {
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this._super();
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this.register = getRegister(this);
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},
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didInsertElement() {
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this._super();
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Ember.run.scheduleOnce('afterRender', this, this._readyNow);
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const mouseTrap = Mousetrap(this.$('.d-editor-input')[0]);
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const shortcuts = this.get('toolbar.shortcuts');
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// for some reason I am having trouble bubbling this so hack it in
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mouseTrap.bind(['ctrl+alt+f'], (event) =>{
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this.appEvents.trigger('header:keyboard-trigger', {type: 'search', event});
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return true;
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});
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Object.keys(shortcuts).forEach(sc => {
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const button = shortcuts[sc];
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mouseTrap.bind(sc, () => {
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this.send(button.action, button);
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return false;
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});
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});
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// disable clicking on links in the preview
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this.$('.d-editor-preview').on('click.preview', e => {
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if ($(e.target).is("a")) {
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e.preventDefault();
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return false;
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}
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});
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if (this.get('composerEvents')) {
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this.appEvents.on('composer:insert-block', text => this._addBlock(this._getSelected(), text));
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this.appEvents.on('composer:insert-text', (text, options) => this._addText(this._getSelected(), text, options));
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this.appEvents.on('composer:replace-text', (oldVal, newVal) => this._replaceText(oldVal, newVal));
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}
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this._mouseTrap = mouseTrap;
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},
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@on('willDestroyElement')
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_shutDown() {
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if (this.get('composerEvents')) {
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this.appEvents.off('composer:insert-block');
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this.appEvents.off('composer:insert-text');
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this.appEvents.off('composer:replace-text');
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}
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const mouseTrap = this._mouseTrap;
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Object.keys(this.get('toolbar.shortcuts')).forEach(sc => mouseTrap.unbind(sc));
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mouseTrap.unbind('ctrl+/','command+/');
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this.$('.d-editor-preview').off('click.preview');
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},
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@computed
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toolbar() {
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const toolbar = new Toolbar(this.site);
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_createCallbacks.forEach(cb => cb(toolbar));
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this.sendAction('extraButtons', toolbar);
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return toolbar;
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},
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_updatePreview() {
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if (this._state !== "inDOM") { return; }
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const value = this.get('value');
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const markdownOptions = this.get('markdownOptions') || {};
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cookAsync(value, markdownOptions).then(cooked => {
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if (this.get('isDestroyed')) { return; }
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this.set('preview', cooked);
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Ember.run.scheduleOnce('afterRender', () => {
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if (this._state !== "inDOM") { return; }
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const $preview = this.$('.d-editor-preview');
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if ($preview.length === 0) return;
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this.sendAction('previewUpdated', $preview);
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});
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});
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},
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@observes('ready', 'value')
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_watchForChanges() {
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if (!this.get('ready')) { return; }
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// Debouncing in test mode is complicated
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if (Ember.testing) {
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this._updatePreview();
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} else {
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Ember.run.debounce(this, this._updatePreview, 30);
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}
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},
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_getSelected(trimLeading, opts) {
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if (!this.get('ready')) { return; }
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const textarea = this.$('textarea.d-editor-input')[0];
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const value = textarea.value;
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let start = textarea.selectionStart;
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let end = textarea.selectionEnd;
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// trim trailing spaces cause **test ** would be invalid
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while (end > start && /\s/.test(value.charAt(end-1))) {
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end--;
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}
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if (trimLeading) {
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// trim leading spaces cause ** test** would be invalid
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while(end > start && /\s/.test(value.charAt(start))) {
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start++;
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}
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}
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const selVal = value.substring(start, end);
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const pre = value.slice(0, start);
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const post = value.slice(end);
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if (opts && opts.lineVal) {
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const lineVal = value.split("\n")[value.substr(0, textarea.selectionStart).split("\n").length - 1];
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return { start, end, value: selVal, pre, post, lineVal };
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} else {
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return { start, end, value: selVal, pre, post };
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}
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},
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_selectText(from, length) {
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Ember.run.scheduleOnce('afterRender', () => {
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const $textarea = this.$('textarea.d-editor-input');
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const textarea = $textarea[0];
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const oldScrollPos = $textarea.scrollTop();
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if (!!navigator.platform && /iPad|iPhone|iPod/.test(navigator.platform)) {
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$textarea.focus();
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}
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textarea.selectionStart = from;
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textarea.selectionEnd = textarea.selectionStart + length;
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$textarea.scrollTop(oldScrollPos);
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});
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},
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// perform the same operation over many lines of text
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_getMultilineContents(lines, head, hval, hlen, tail, tlen, opts) {
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let operation = OP.NONE;
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const applyEmptyLines = opts && opts.applyEmptyLines;
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return lines.map(l => {
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if (!applyEmptyLines && l.length === 0) {
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return l;
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}
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if (operation !== OP.ADDED &&
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(l.slice(0, hlen) === hval && tlen === 0 ||
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(tail.length && l.slice(-tlen) === tail))) {
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operation = OP.REMOVED;
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if (tlen === 0) {
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const result = l.slice(hlen);
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[hval, hlen] = getHead(head, hval);
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return result;
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} else if (l.slice(-tlen) === tail) {
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const result = l.slice(hlen, -tlen);
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[hval, hlen] = getHead(head, hval);
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return result;
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}
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} else if (operation === OP.NONE) {
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operation = OP.ADDED;
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} else if (operation === OP.REMOVED) {
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return l;
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}
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const result = `${hval}${l}${tail}`;
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[hval, hlen] = getHead(head, hval);
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return result;
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}).join("\n");
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},
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_applySurround(sel, head, tail, exampleKey, opts) {
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const pre = sel.pre;
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const post = sel.post;
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const tlen = tail.length;
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if (sel.start === sel.end) {
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if (tlen === 0) { return; }
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const [hval, hlen] = getHead(head);
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const example = I18n.t(`wizard_composer.${exampleKey}`);
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this.set('value', `${pre}${hval}${example}${tail}${post}`);
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this._selectText(pre.length + hlen, example.length);
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} else if (opts && !opts.multiline) {
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const [hval, hlen] = getHead(head);
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if (pre.slice(-hlen) === hval && post.slice(0, tail.length) === tail) {
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this.set('value', `${pre.slice(0, -hlen)}${sel.value}${post.slice(tail.length)}`);
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this._selectText(sel.start - hlen, sel.value.length);
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} else {
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this.set('value', `${pre}${hval}${sel.value}${tail}${post}`);
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this._selectText(sel.start + hlen, sel.value.length);
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}
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} else {
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const lines = sel.value.split("\n");
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let [hval, hlen] = getHead(head);
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if (lines.length === 1 && pre.slice(-tlen) === tail && post.slice(0, hlen) === hval) {
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this.set('value', `${pre.slice(0, -hlen)}${sel.value}${post.slice(tlen)}`);
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this._selectText(sel.start - hlen, sel.value.length);
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} else {
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const contents = this._getMultilineContents(
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lines,
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head,
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hval,
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hlen,
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tail,
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tlen,
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opts
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);
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this.set('value', `${pre}${contents}${post}`);
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if (lines.length === 1 && tlen > 0) {
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this._selectText(sel.start + hlen, sel.value.length);
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} else {
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this._selectText(sel.start, contents.length);
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}
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}
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}
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},
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_applyList(sel, head, exampleKey, opts) {
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if (sel.value.indexOf("\n") !== -1) {
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this._applySurround(sel, head, '', exampleKey, opts);
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} else {
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const [hval, hlen] = getHead(head);
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if (sel.start === sel.end) {
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sel.value = I18n.t(`wizard_composer.${exampleKey}`);
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}
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const trimmedPre = sel.pre.trim();
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const number = (sel.value.indexOf(hval) === 0) ? sel.value.slice(hlen) : `${hval}${sel.value}`;
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const preLines = trimmedPre.length ? `${trimmedPre}\n\n` : "";
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const trimmedPost = sel.post.trim();
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const post = trimmedPost.length ? `\n\n${trimmedPost}` : trimmedPost;
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this.set('value', `${preLines}${number}${post}`);
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this._selectText(preLines.length, number.length);
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}
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},
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_replaceText(oldVal, newVal) {
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const val = this.get('value');
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const needleStart = val.indexOf(oldVal);
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if (needleStart === -1) {
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// Nothing to replace.
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return;
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}
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const textarea = this.$('textarea.d-editor-input')[0];
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// Determine post-replace selection.
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const newSelection = determinePostReplaceSelection({
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selection: { start: textarea.selectionStart, end: textarea.selectionEnd },
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needle: { start: needleStart, end: needleStart + oldVal.length },
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replacement: { start: needleStart, end: needleStart + newVal.length }
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});
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// Replace value (side effect: cursor at the end).
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this.set('value', val.replace(oldVal, newVal));
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// Restore cursor.
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this._selectText(newSelection.start, newSelection.end - newSelection.start);
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},
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_addBlock(sel, text) {
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text = (text || '').trim();
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if (text.length === 0) {
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return;
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}
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let pre = sel.pre;
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let post = sel.value + sel.post;
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if (pre.length > 0) {
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pre = pre.replace(/\n*$/, "\n\n");
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}
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if (post.length > 0) {
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post = post.replace(/^\n*/, "\n\n");
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} else {
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post = "\n";
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}
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const value = pre + text + post;
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const $textarea = this.$('textarea.d-editor-input');
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this.set('value', value);
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$textarea.val(value);
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$textarea.prop("selectionStart", (pre+text).length + 2);
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$textarea.prop("selectionEnd", (pre+text).length + 2);
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Ember.run.scheduleOnce("afterRender", () => $textarea.focus());
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},
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_addText(sel, text, options) {
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const $textarea = this.$('textarea.d-editor-input');
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if (options && options.ensureSpace) {
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if ((sel.pre + '').length > 0) {
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if (!sel.pre.match(/\s$/)) {
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text = ' ' + text;
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}
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}
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if ((sel.post + '').length > 0) {
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if (!sel.post.match(/^\s/)) {
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text = text + ' ';
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}
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}
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}
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const insert = `${sel.pre}${text}`;
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const value = `${insert}${sel.post}`;
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this.set('value', value);
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$textarea.val(value);
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$textarea.prop("selectionStart", insert.length);
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$textarea.prop("selectionEnd", insert.length);
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Ember.run.scheduleOnce("afterRender", () => $textarea.focus());
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},
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_extractTable(text) {
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if (text.endsWith("\n")) {
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text = text.substring(0, text.length - 1);
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}
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let rows = text.split("\n");
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|
|
if (rows.length > 1) {
|
|
const columns = rows.map(r => r.split("\t").length);
|
|
const isTable = columns.reduce((a, b) => a && columns[0] === b && b > 1) &&
|
|
!(columns[0] === 2 && rows[0].split("\t")[0].match(/^•$|^\d+.$/)); // to skip tab delimited lists
|
|
|
|
if (isTable) {
|
|
const splitterRow = [...Array(columns[0])].map(() => "---").join("\t");
|
|
rows.splice(1, 0, splitterRow);
|
|
|
|
return "|" + rows.map(r => r.split("\t").join("|")).join("|\n|") + "|\n";
|
|
}
|
|
}
|
|
return null;
|
|
},
|
|
|
|
_toggleDirection() {
|
|
const $textArea = $(".d-editor-input");
|
|
let currentDir = $textArea.attr('dir') ? $textArea.attr('dir') : siteDir(),
|
|
newDir = currentDir === 'ltr' ? 'rtl' : 'ltr';
|
|
|
|
$textArea.attr('dir', newDir).focus();
|
|
},
|
|
|
|
paste(e) {
|
|
if (!$(".d-editor-input").is(":focus")) {
|
|
return;
|
|
}
|
|
|
|
const isComposer = $("#reply-control .d-editor-input").is(":focus");
|
|
let { clipboard, canPasteHtml } = clipboardData(e, isComposer);
|
|
|
|
let plainText = clipboard.getData("text/plain");
|
|
let html = clipboard.getData("text/html");
|
|
let handled = false;
|
|
|
|
if (plainText) {
|
|
plainText = plainText.trim().replace(/\r/g,"");
|
|
const table = this._extractTable(plainText);
|
|
if (table) {
|
|
this.appEvents.trigger('composer:insert-text', table);
|
|
handled = true;
|
|
}
|
|
}
|
|
|
|
const { pre, lineVal } = this._getSelected(null, {lineVal: true});
|
|
const isInlinePasting = pre.match(/[^\n]$/);
|
|
|
|
if (canPasteHtml && plainText) {
|
|
if (isInlinePasting) {
|
|
canPasteHtml = !(lineVal.match(/^```/) || isInside(pre, /`/g) || lineVal.match(/^ /));
|
|
} else {
|
|
canPasteHtml = !isInside(pre, /(^|\n)```/g);
|
|
}
|
|
}
|
|
|
|
if (canPasteHtml && !handled) {
|
|
let markdown = toMarkdown(html);
|
|
|
|
if (!plainText || plainText.length < markdown.length) {
|
|
if(isInlinePasting) {
|
|
markdown = markdown.replace(/^#+/, "").trim();
|
|
markdown = pre.match(/\S$/) ? ` ${markdown}` : markdown;
|
|
}
|
|
|
|
this.appEvents.trigger('composer:insert-text', markdown);
|
|
handled = true;
|
|
}
|
|
}
|
|
|
|
if (handled) {
|
|
e.preventDefault();
|
|
}
|
|
},
|
|
|
|
keyPress(e) {
|
|
if (e.keyCode === 13) {
|
|
const selected = this._getSelected();
|
|
this._addText(selected, '\n');
|
|
return false;
|
|
}
|
|
},
|
|
|
|
actions: {
|
|
toolbarButton(button) {
|
|
const selected = this._getSelected(button.trimLeading);
|
|
const toolbarEvent = {
|
|
selected,
|
|
selectText: (from, length) => this._selectText(from, length),
|
|
applySurround: (head, tail, exampleKey, opts) => this._applySurround(selected, head, tail, exampleKey, opts),
|
|
applyList: (head, exampleKey, opts) => this._applyList(selected, head, exampleKey, opts),
|
|
addText: text => this._addText(selected, text),
|
|
replaceText: text => this._addText({pre: '', post: ''}, text),
|
|
getText: () => this.get('value'),
|
|
toggleDirection: () => this._toggleDirection(),
|
|
};
|
|
|
|
if (button.sendAction) {
|
|
return this.sendAction(button.sendAction, toolbarEvent);
|
|
} else {
|
|
button.perform(toolbarEvent);
|
|
}
|
|
},
|
|
|
|
formatCode() {
|
|
const sel = this._getSelected('', { lineVal: true });
|
|
const selValue = sel.value;
|
|
const hasNewLine = selValue.indexOf("\n") !== -1;
|
|
const isBlankLine = sel.lineVal.trim().length === 0;
|
|
const isFourSpacesIndent = this.siteSettings.code_formatting_style === FOUR_SPACES_INDENT;
|
|
|
|
if (!hasNewLine) {
|
|
if (selValue.length === 0 && isBlankLine) {
|
|
if (isFourSpacesIndent) {
|
|
const example = I18n.t(`wizard_composer.code_text`);
|
|
this.set('value', `${sel.pre} ${example}${sel.post}`);
|
|
return this._selectText(sel.pre.length + 4, example.length);
|
|
} else {
|
|
return this._applySurround(sel, "```\n", "\n```", 'paste_code_text');
|
|
}
|
|
} else {
|
|
return this._applySurround(sel, '`', '`', 'code_title');
|
|
}
|
|
} else {
|
|
if (isFourSpacesIndent) {
|
|
return this._applySurround(sel, ' ', '', 'code_text');
|
|
} else {
|
|
const preNewline = (sel.pre[-1] !== "\n" && sel.pre !== "") ? "\n" : "";
|
|
const postNewline = sel.post[0] !== "\n" ? "\n" : "";
|
|
return this._addText(sel, `${preNewline}\`\`\`\n${sel.value}\n\`\`\`${postNewline}`);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
});
|