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import './fit-textareas.css';
import select from 'select-dom';
import delegate from 'delegate-it';
import fitTextarea from 'fit-textarea';
import * as pageDetect from 'github-url-detection';
import features from '.';
import onPrMergePanelOpen from '../github-events/on-pr-merge-panel-open';
function inputListener(event: Event): void {
fitTextarea(event.target as HTMLTextAreaElement);
}
function watchTextarea(textarea: HTMLTextAreaElement): void {
textarea.addEventListener('input', inputListener); // The user triggers `input` event
textarea.addEventListener('change', inputListener); // File uploads trigger `change` events
fitTextarea(textarea);
// Disable constrained native feature
textarea.classList.replace('js-size-to-fit', 'rgh-fit-textareas');
}
function focusListener({delegateTarget: textarea}: delegate.Event<Event, HTMLTextAreaElement>): void {
watchTextarea(textarea);
}
function fitPrCommitMessageBox(): void {
watchTextarea(select<HTMLTextAreaElement>('[name="commit_message"]')!);
}
function init(): void {
// Exclude PR review box because it's in a `position:fixed` container; The scroll HAS to appear within the fixed element.
delegate(document, 'textarea:not(#pull_request_review_body)', 'focusin', focusListener);
select.all('textarea').forEach(watchTextarea);
}
void features.add({
id: __filebasename,
description: 'Auto-resizes comment fields to fit their content and no longer show scroll bars, rather than have a height limit like GitHub’s native "fit to content" behavior.',
screenshot: 'https://user-images.githubusercontent.com/1402241/54336211-66fd5e00-4666-11e9-9c5e-111fccab004d.gif'
}, {
include: [
pageDetect.hasRichTextEditor
],
init
}, {
include: [
pageDetect.isPRConversation
],
init() {
onPrMergePanelOpen(fitPrCommitMessageBox);
}
});
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