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Improve markdown editor: width, height, preferred (#23895)

Browse Source 
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>
This commit is contained in:
wxiaoguang 2023-04-08 01:03:29 +08:00 committed by GitHub
parent 97d5ec2aeb
commit 93eb914438
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GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 203 additions and 55 deletions
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3
templates/repo/issue/comment_tab.tmpl
View File

@ -3,14 +3,17 @@
{{if not $textareaContent}}{{$textareaContent = .PullRequestTemplate}}{{end}}
{{if not $textareaContent}}{{$textareaContent = .content}}{{end}}
<div class="field">
{{template "shared/combomarkdowneditor" (dict
"locale" $.locale
"MarkdownPreviewUrl" (print .Repository.Link "/markup")
"MarkdownPreviewContext" .RepoLink
"TextareaName" "content"
"TextareaContent" $textareaContent
"TextareaPlaceholder" ($.locale.Tr "repo.diff.comment.placeholder")
"DropzoneParentContainer" "form, .ui.form"
)}}
</div>
{{if .IsAttachmentEnabled}}
<div class="field">

11
web_src/css/editor-markdown.css
View File

@ -18,8 +18,15 @@
cursor: pointer;
}
.combo-markdown-editor .markdown-text-editor {
.ui.form .combo-markdown-editor textarea.markdown-text-editor,
.combo-markdown-editor textarea.markdown-text-editor {
display: block;
width: 100%;
height: 200px;
min-height: 200px;
max-height: calc(100vh - 200px);
resize: vertical;
}
.combo-markdown-editor .CodeMirror-scroll {
max-height: calc(100vh - 200px);
}

21
web_src/css/repository.css
View File

@ -544,10 +544,6 @@
margin: 0;
}
.repository .comment textarea {
max-height: none !important;
}
.repository.new.issue .comment.form .comment .avatar {
width: 3em;
}
@ -1068,11 +1064,6 @@
min-height: 5rem;
}
.repository.view.issue .comment-list .comment .ui.form textarea {
height: 200px;
font-family: var(--fonts-monospace);
}
.repository.view.issue .comment-list .comment .edit.buttons {
margin-top: 10px;
}
@ -1191,15 +1182,6 @@
margin-top: -8px;
}
.repository .comment.form .content textarea {
height: 200px;
font-family: var(--fonts-monospace);
}
.repository .comment.form .content .CodeMirror-scroll {
max-height: 85vh;
}
.repository .milestone.list {
list-style: none;
padding-top: 15px;
@ -2123,9 +2105,6 @@
margin-top: 0;
}
.repository.wiki .form .CodeMirror-scroll {
max-height: 85vh;
}
@media (max-width: 767px) {
.repository.wiki .dividing.header .stackable.grid .button {

17
web_src/css/review.css
View File

@ -154,8 +154,11 @@
margin: 0.5em;
}
.comment-code-cloud .editor-statusbar {
display: none;
}
.comment-code-cloud .footer {
border-top: 1px solid var(--color-secondary);
padding: 10px 0;
}
@ -218,15 +221,9 @@ a.blob-excerpt:hover {
max-height: calc(100vh - 360px);
}
.review-box-panel .editor-toolbar,
.review-box-panel .CodeMirror-scroll {
width: min(calc(100vw - 2em), 800px);
max-width: none;
}
.review-box-panel .combo-markdown-editor textarea {
width: 730px;
max-width: calc(100vw - 70px);
.review-box-panel .combo-markdown-editor {
width: 730px; /* this width matches current EasyMDE's toolbar's width */
max-width: calc(100vw - 70px); /* leave enough space on left, and align the page content */
}
#review-box {

64
web_src/js/features/comp/ComboMarkdownEditor.js
View File

@ -1,8 +1,8 @@
import '@github/markdown-toolbar-element';
import {attachTribute} from '../tribute.js';
import {hideElem, showElem} from '../../utils/dom.js';
import {initEasyMDEImagePaste, initTextareaImagePaste} from './ImagePaste.js';
import $ from 'jquery';
import {attachTribute} from '../tribute.js';
import {hideElem, showElem, autosize} from '../../utils/dom.js';
import {initEasyMDEImagePaste, initTextareaImagePaste} from './ImagePaste.js';
import {initMarkupContent} from '../../markup/content.js';
import {handleGlobalEnterQuickSubmit} from './QuickSubmit.js';
import {attachRefIssueContextPopup} from '../contextpopup.js';
@ -39,31 +39,55 @@ class ComboMarkdownEditor {
}
async init() {
this.prepareEasyMDEToolbarActions();
this.setupTab();
this.setupDropzone();
this.setupTextarea();
await attachTribute(this.textarea, {mentions: true, emoji: true});
if (this.userPreferredEditor === 'easymde') {
await this.switchToEasyMDE();
}
}
applyEditorHeights(el, heights) {
if (!heights) return;
if (heights.minHeight) el.style.minHeight = heights.minHeight;
if (heights.height) el.style.height = heights.height;
if (heights.maxHeight) el.style.maxHeight = heights.maxHeight;
}
setupTextarea() {
this.textarea = this.container.querySelector('.markdown-text-editor');
this.textarea._giteaComboMarkdownEditor = this;
this.textarea.id = `_combo_markdown_editor_${String(elementIdCounter)}`;
this.textarea.addEventListener('input', (e) => {this.options?.onContentChanged?.(this, e)});
this.textarea.id = `_combo_markdown_editor_${String(elementIdCounter++)}`;
this.textarea.addEventListener('input', (e) => this.options?.onContentChanged?.(this, e));
this.applyEditorHeights(this.textarea, this.options.editorHeights);
this.textareaAutosize = autosize(this.textarea, {viewportMarginBottom: 130});
this.textareaMarkdownToolbar = this.container.querySelector('markdown-toolbar');
this.textareaMarkdownToolbar.setAttribute('for', this.textarea.id);
elementIdCounter++;
this.switchToEasyMDEButton = this.container.querySelector('.markdown-switch-easymde');
this.switchToEasyMDEButton?.addEventListener('click', async (e) => {
e.preventDefault();
this.userPreferredEditor = 'easymde';
await this.switchToEasyMDE();
});
await attachTribute(this.textarea, {mentions: true, emoji: true});
if (this.dropzone) {
initTextareaImagePaste(this.textarea, this.dropzone);
}
}
setupDropzone() {
const dropzoneParentContainer = this.container.getAttribute('data-dropzone-parent-container');
if (dropzoneParentContainer) {
this.dropzone = this.container.closest(this.container.getAttribute('data-dropzone-parent-container'))?.querySelector('.dropzone');
initTextareaImagePaste(this.textarea, this.dropzone);
}
this.setupTab();
this.prepareEasyMDEToolbarActions();
}
setupTab() {
@ -134,7 +158,10 @@ class ComboMarkdownEditor {
title: 'Add Checkbox (checked)',
},
'gitea-switch-to-textarea': {
action: this.switchToTextarea.bind(this),
action: () => {
this.userPreferredEditor = 'textarea';
this.switchToTextarea();
},
className: 'fa fa-file',
title: 'Revert to simple textarea',
},
@ -169,7 +196,7 @@ class ComboMarkdownEditor {
return processed;
}
async switchToTextarea() {
switchToTextarea() {
showElem(this.textareaMarkdownToolbar);
if (this.easyMDE) {
this.easyMDE.toTextArea();
@ -218,6 +245,7 @@ class ComboMarkdownEditor {
}
},
});
this.applyEditorHeights(this.container.querySelector('.CodeMirror-scroll'), this.options.editorHeights);
await attachTribute(this.easyMDE.codemirror.getInputField(), {mentions: true, emoji: true});
initEasyMDEImagePaste(this.easyMDE, this.dropzone);
hideElem(this.textareaMarkdownToolbar);
@ -236,6 +264,7 @@ class ComboMarkdownEditor {
} else {
this.textarea.value = v;
}
this.textareaAutosize.resizeToFit();
}
focus() {
@ -254,6 +283,13 @@ class ComboMarkdownEditor {
this.easyMDE.codemirror.setCursor(this.easyMDE.codemirror.lineCount(), 0);
}
}
get userPreferredEditor() {
return window.localStorage.getItem(`markdown-editor-${this.options.useScene ?? 'default'}`);
}
set userPreferredEditor(s) {
window.localStorage.setItem(`markdown-editor-${this.options.useScene ?? 'default'}`, s);
}
}
export function getComboMarkdownEditor(el) {

5
web_src/js/features/repo-wiki.js
View File

@ -44,6 +44,11 @@ async function initRepoWikiFormEditor() {
renderEasyMDEPreview();
editor = await initComboMarkdownEditor($editorContainer, {
useScene: 'wiki',
// EasyMDE has some problems of height definition, it has inline style height 300px by default, so we also use inline styles to override it.
// And another benefit is that we only need to write the style once for both editors.
// TODO: Move height style to CSS after EasyMDE removal.
editorHeights: {minHeight: '300px', height: 'calc(100vh - 600px)'},
previewMode: 'gfm',
previewWiki: true,
easyMDEOptions: {

121
web_src/js/utils/dom.js
View File

@ -49,3 +49,124 @@ export function onDomReady(cb) {
cb();
}
}
// autosize a textarea to fit content. Based on
// https://github.com/github/textarea-autosize
// ---------------------------------------------------------------------
// Copyright (c) 2018 GitHub, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// ---------------------------------------------------------------------
export function autosize(textarea, {viewportMarginBottom = 0} = {}) {
let isUserResized = false;
// lastStyleHeight and initialStyleHeight are CSS values like '100px'
let lastMouseX, lastMouseY, lastStyleHeight, initialStyleHeight;
function onUserResize(event) {
if (isUserResized) return;
if (lastMouseX !== event.clientX || lastMouseY !== event.clientY) {
const newStyleHeight = textarea.style.height;
if (lastStyleHeight && lastStyleHeight !== newStyleHeight) {
isUserResized = true;
}
lastStyleHeight = newStyleHeight;
}
lastMouseX = event.clientX;
lastMouseY = event.clientY;
}
function overflowOffset() {
let offsetTop = 0;
let el = textarea;
while (el !== document.body && el !== null) {
offsetTop += el.offsetTop || 0;
el = el.offsetParent;
}
const top = offsetTop - document.defaultView.scrollY;
const bottom = document.documentElement.clientHeight - (top + textarea.offsetHeight);
return {top, bottom};
}
function resizeToFit() {
if (isUserResized) return;
if (textarea.offsetWidth <= 0 && textarea.offsetHeight <= 0) return;
try {
const {top, bottom} = overflowOffset();
const isOutOfViewport = top < 0 || bottom < 0;
const computedStyle = getComputedStyle(textarea);
const topBorderWidth = parseFloat(computedStyle.borderTopWidth);
const bottomBorderWidth = parseFloat(computedStyle.borderBottomWidth);
const isBorderBox = computedStyle.boxSizing === 'border-box';
const borderAddOn = isBorderBox ? topBorderWidth + bottomBorderWidth : 0;
const adjustedViewportMarginBottom = bottom < viewportMarginBottom ? bottom : viewportMarginBottom;
const curHeight = parseFloat(computedStyle.height);
const maxHeight = curHeight + bottom - adjustedViewportMarginBottom;
textarea.style.height = 'auto';
let newHeight = textarea.scrollHeight + borderAddOn;
if (isOutOfViewport) {
// it is already out of the viewport:
// * if the textarea is expanding: do not resize it
if (newHeight > curHeight) {
newHeight = curHeight;
}
// * if the textarea is shrinking, shrink line by line (just use the
// scrollHeight). do not apply max-height limit, otherwise the page
// flickers and the textarea jumps
} else {
// * if it is in the viewport, apply the max-height limit
newHeight = Math.min(maxHeight, newHeight);
}
textarea.style.height = `${newHeight}px`;
lastStyleHeight = textarea.style.height;
} finally {
// ensure that the textarea is fully scrolled to the end, when the cursor
// is at the end during an input event
if (textarea.selectionStart === textarea.selectionEnd &&
textarea.selectionStart === textarea.value.length) {
textarea.scrollTop = textarea.scrollHeight;
}
}
}
function onFormReset() {
isUserResized = false;
if (initialStyleHeight !== undefined) {
textarea.style.height = initialStyleHeight;
} else {
textarea.style.removeProperty('height');
}
}
textarea.addEventListener('mousemove', onUserResize);
textarea.addEventListener('input', resizeToFit);
textarea.form?.addEventListener('reset', onFormReset);
initialStyleHeight = textarea.style.height ?? undefined;
if (textarea.value) resizeToFit();
return {
resizeToFit,
destroy() {
textarea.removeEventListener('mousemove', onUserResize);
textarea.removeEventListener('input', resizeToFit);
textarea.form?.removeEventListener('reset', onFormReset);
}
};
}