mirror of
https://github.com/go-gitea/gitea
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Follow #23876 1. Fine tune the heights of the editors (like before) * Auto expand the editor (increase/decrease the height) when editing 2. Remember user's last used editor (textarea/easymde) in LocalStorage, then next time the editor will be switched automatically * No need to introduce extra config option, it satisfies all users, including who prefer EasyMDE 3. Also fix the width problem of Review Panel Screenshot: <details> ![image](https://user-images.githubusercontent.com/2114189/229518585-2e05827e-8355-48f3-a20c-2c8b9e60ce74.png) ![image](https://user-images.githubusercontent.com/2114189/229518173-4caa6da7-6ad9-40e9-bf1a-ceddfcd4b37f.png) ![image](https://user-images.githubusercontent.com/2114189/229507886-148e9b84-9b58-46d1-ba3f-727e1396f476.png) ![image](https://user-images.githubusercontent.com/2114189/229518258-9f522294-1e64-4b06-91ab-ab43b0353aaa.png) ![image](https://user-images.githubusercontent.com/2114189/229507752-6d540ac7-7748-4bb6-bc09-28acab32d31b.png) ![image](https://user-images.githubusercontent.com/2114189/229510899-de322af5-57e8-4dc5-9a61-771a3b1bee79.png) </details> --------- Co-authored-by: silverwind <me@silverwind.io>
173 lines
5.7 KiB
JavaScript
173 lines
5.7 KiB
JavaScript
function elementsCall(el, func, ...args) {
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if (typeof el === 'string' || el instanceof String) {
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el = document.querySelectorAll(el);
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}
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if (el instanceof Node) {
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func(el, ...args);
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} else if (el.length !== undefined) {
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// this works for: NodeList, HTMLCollection, Array, jQuery
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for (const e of el) {
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func(e, ...args);
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}
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} else {
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throw new Error('invalid argument to be shown/hidden');
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}
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}
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/**
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* @param el string (selector), Node, NodeList, HTMLCollection, Array or jQuery
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* @param force force=true to show or force=false to hide, undefined to toggle
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*/
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function toggleShown(el, force) {
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if (force === true) {
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el.classList.remove('gt-hidden');
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} else if (force === false) {
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el.classList.add('gt-hidden');
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} else if (force === undefined) {
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el.classList.toggle('gt-hidden');
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} else {
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throw new Error('invalid force argument');
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}
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}
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export function showElem(el) {
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elementsCall(el, toggleShown, true);
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}
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export function hideElem(el) {
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elementsCall(el, toggleShown, false);
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}
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export function toggleElem(el, force) {
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elementsCall(el, toggleShown, force);
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}
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export function onDomReady(cb) {
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if (document.readyState === 'loading') {
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document.addEventListener('DOMContentLoaded', cb);
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} else {
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cb();
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}
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}
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// autosize a textarea to fit content. Based on
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// https://github.com/github/textarea-autosize
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// ---------------------------------------------------------------------
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// Copyright (c) 2018 GitHub, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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// ---------------------------------------------------------------------
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export function autosize(textarea, {viewportMarginBottom = 0} = {}) {
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let isUserResized = false;
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// lastStyleHeight and initialStyleHeight are CSS values like '100px'
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let lastMouseX, lastMouseY, lastStyleHeight, initialStyleHeight;
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function onUserResize(event) {
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if (isUserResized) return;
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if (lastMouseX !== event.clientX || lastMouseY !== event.clientY) {
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const newStyleHeight = textarea.style.height;
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if (lastStyleHeight && lastStyleHeight !== newStyleHeight) {
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isUserResized = true;
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}
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lastStyleHeight = newStyleHeight;
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}
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lastMouseX = event.clientX;
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lastMouseY = event.clientY;
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}
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function overflowOffset() {
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let offsetTop = 0;
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let el = textarea;
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while (el !== document.body && el !== null) {
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offsetTop += el.offsetTop || 0;
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el = el.offsetParent;
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}
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const top = offsetTop - document.defaultView.scrollY;
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const bottom = document.documentElement.clientHeight - (top + textarea.offsetHeight);
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return {top, bottom};
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}
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function resizeToFit() {
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if (isUserResized) return;
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if (textarea.offsetWidth <= 0 && textarea.offsetHeight <= 0) return;
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try {
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const {top, bottom} = overflowOffset();
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const isOutOfViewport = top < 0 || bottom < 0;
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const computedStyle = getComputedStyle(textarea);
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const topBorderWidth = parseFloat(computedStyle.borderTopWidth);
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const bottomBorderWidth = parseFloat(computedStyle.borderBottomWidth);
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const isBorderBox = computedStyle.boxSizing === 'border-box';
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const borderAddOn = isBorderBox ? topBorderWidth + bottomBorderWidth : 0;
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const adjustedViewportMarginBottom = bottom < viewportMarginBottom ? bottom : viewportMarginBottom;
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const curHeight = parseFloat(computedStyle.height);
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const maxHeight = curHeight + bottom - adjustedViewportMarginBottom;
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textarea.style.height = 'auto';
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let newHeight = textarea.scrollHeight + borderAddOn;
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if (isOutOfViewport) {
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// it is already out of the viewport:
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// * if the textarea is expanding: do not resize it
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if (newHeight > curHeight) {
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newHeight = curHeight;
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}
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// * if the textarea is shrinking, shrink line by line (just use the
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// scrollHeight). do not apply max-height limit, otherwise the page
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// flickers and the textarea jumps
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} else {
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// * if it is in the viewport, apply the max-height limit
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newHeight = Math.min(maxHeight, newHeight);
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}
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textarea.style.height = `${newHeight}px`;
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lastStyleHeight = textarea.style.height;
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} finally {
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// ensure that the textarea is fully scrolled to the end, when the cursor
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// is at the end during an input event
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if (textarea.selectionStart === textarea.selectionEnd &&
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textarea.selectionStart === textarea.value.length) {
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textarea.scrollTop = textarea.scrollHeight;
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}
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}
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}
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function onFormReset() {
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isUserResized = false;
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if (initialStyleHeight !== undefined) {
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textarea.style.height = initialStyleHeight;
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} else {
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textarea.style.removeProperty('height');
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}
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}
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textarea.addEventListener('mousemove', onUserResize);
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textarea.addEventListener('input', resizeToFit);
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textarea.form?.addEventListener('reset', onFormReset);
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initialStyleHeight = textarea.style.height ?? undefined;
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if (textarea.value) resizeToFit();
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return {
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resizeToFit,
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destroy() {
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textarea.removeEventListener('mousemove', onUserResize);
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textarea.removeEventListener('input', resizeToFit);
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textarea.form?.removeEventListener('reset', onFormReset);
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}
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};
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}
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