Ghost/ghost/admin/app/components/modal-post-email-preview.js
Kevin Ansfield f6ec42959a Ensured preview iframes always include doctype and html attributes
closes https://github.com/TryGhost/Ghost/issues/13684
refs 7eda410dc3

- ensures any `<DOCTYPE html>` (or equivalent) served when fetching preview html is passed through when replacing iframe contents
- replicates across all previews the fix for missing attributes on the `<html>` element that was put in for the design settings preview - using `documentElement.outerHTML` in place of `documentElement.innerHTML`
2021-10-28 14:53:40 +01:00

88 lines
2.6 KiB
JavaScript

import ModalComponent from 'ghost-admin/components/modal-base';
import {action} from '@ember/object';
import {alias} from '@ember/object/computed';
import {inject as service} from '@ember/service';
import {timeout} from 'ember-concurrency';
const INJECTED_CSS = `
html::-webkit-scrollbar {
display: none;
width: 0;
background: transparent
}
html {
scrollbar-width: none;
}
`;
export default ModalComponent.extend({
ghostPaths: service(),
ajax: service(),
settings: service(),
config: service(),
type: 'desktop',
html: '',
subject: '',
post: alias('model'),
actions: {
changeType(type) {
this.set('type', type);
},
// noop - we don't want the enter key to do anything here
confirm() {}
},
renderEmailPreview: action(async function renderEmailPreview(iframe) {
await this._fetchEmailData();
// avoid timing issues when _fetchEmailData didn't perform any async ops
await timeout(100);
if (iframe) {
iframe.contentWindow.document.open();
iframe.contentWindow.document.write(this.html);
iframe.contentWindow.document.close();
}
}),
async _fetchEmailData() {
let {html, subject} = this;
if (html && subject) {
return {html, subject};
}
// model is an email
if (this.model.html && this.model.subject) {
html = this.model.html;
subject = this.model.subject;
// model is a post with an existing email
} else if (this.post.email) {
html = this.post.email.html;
subject = this.post.email.subject;
// model is a post, fetch email preview
} else {
let url = this.get('ghostPaths.url').api('/email_preview/posts', this.post.id);
let response = await this.ajax.request(url);
let [emailPreview] = response.email_previews;
html = emailPreview.html;
subject = emailPreview.subject;
}
// inject extra CSS into the html for disabling links and scrollbars etc
let domParser = new DOMParser();
let htmlDoc = domParser.parseFromString(html, 'text/html');
let stylesheet = htmlDoc.querySelector('style');
let originalCss = stylesheet.innerHTML;
stylesheet.innerHTML = `${originalCss}\n\n${INJECTED_CSS}`;
const doctype = new XMLSerializer().serializeToString(htmlDoc.doctype);
html = doctype + htmlDoc.documentElement.outerHTML;
this.setProperties({html, subject});
}
});