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import { Component, linkEvent } from 'inferno';
import { Prompt } from 'inferno-router';
import {
mdToHtml,
randomStr,
markdownHelpUrl,
toast,
setupTribute,
pictrsDeleteToast,
setupTippy,
} from '../utils';
import { UserService } from '../services';
import autosize from 'autosize';
import Tribute from 'tributejs/src/Tribute.js';
import { i18n } from '../i18next';
interface MarkdownTextAreaProps {
initialContent: string;
finished?: boolean;
buttonTitle?: string;
replyType?: boolean;
focus?: boolean;
disabled?: boolean;
onSubmit?(msg: { val: string; formId: string }): any;
onContentChange?(val: string): any;
onReplyCancel?(): any;
}
interface MarkdownTextAreaState {
content: string;
previewMode: boolean;
loading: boolean;
imageLoading: boolean;
}
export class MarkdownTextArea extends Component<
MarkdownTextAreaProps,
MarkdownTextAreaState
> {
private id = `comment-textarea-${randomStr()}`;
private formId = `comment-form-${randomStr()}`;
private tribute: Tribute;
private emptyState: MarkdownTextAreaState = {
content: this.props.initialContent,
previewMode: false,
loading: false,
imageLoading: false,
};
constructor(props: any, context: any) {
super(props, context);
this.tribute = setupTribute();
this.state = this.emptyState;
}
componentDidMount() {
let textarea: any = document.getElementById(this.id);
if (textarea) {
autosize(textarea);
this.tribute.attach(textarea);
textarea.addEventListener('tribute-replaced', () => {
this.state.content = textarea.value;
this.setState(this.state);
autosize.update(textarea);
});
this.quoteInsert();
if (this.props.focus) {
textarea.focus();
}
// TODO this is slow for some reason
setupTippy();
}
}
componentDidUpdate() {
if (this.state.content) {
window.onbeforeunload = () => true;
} else {
window.onbeforeunload = undefined;
}
}
componentWillReceiveProps(nextProps: MarkdownTextAreaProps) {
if (nextProps.finished) {
this.state.previewMode = false;
this.state.loading = false;
this.state.content = '';
this.setState(this.state);
if (this.props.replyType) {
this.props.onReplyCancel();
}
let textarea: any = document.getElementById(this.id);
let form: any = document.getElementById(this.formId);
form.reset();
setTimeout(() => autosize.update(textarea), 10);
this.setState(this.state);
}
}
componentWillUnmount() {
window.onbeforeunload = null;
}
render() {
return (
<form id={this.formId} onSubmit={linkEvent(this, this.handleSubmit)}>
<Prompt when={this.state.content} message={i18n.t('block_leaving')} />
<div class="form-group row">
<div className={`col-sm-12`}>
<textarea
id={this.id}
className={`form-control ${this.state.previewMode && 'd-none'}`}
value={this.state.content}
onInput={linkEvent(this, this.handleContentChange)}
onPaste={linkEvent(this, this.handleImageUploadPaste)}
required
disabled={this.props.disabled}
rows={2}
maxLength={10000}
/>
{this.state.previewMode && (
<div
className="card bg-transparent border-secondary card-body md-div"
dangerouslySetInnerHTML={mdToHtml(this.state.content)}
/>
)}
</div>
</div>
<div class="row">
<div class="col-sm-12 d-flex flex-wrap">
{this.props.buttonTitle && (
<button
type="submit"
class="btn btn-sm btn-secondary mr-2"
disabled={this.props.disabled || this.state.loading}
>
{this.state.loading ? (
<svg class="icon icon-spinner spin">
<use xlinkHref="#icon-spinner"></use>
</svg>
) : (
<span>{this.props.buttonTitle}</span>
)}
</button>
)}
{this.props.replyType && (
<button
type="button"
class="btn btn-sm btn-secondary mr-2"
onClick={linkEvent(this, this.handleReplyCancel)}
>
{i18n.t('cancel')}
</button>
)}
{this.state.content && (
<button
className={`btn btn-sm btn-secondary mr-2 ${
this.state.previewMode && 'active'
}`}
onClick={linkEvent(this, this.handlePreviewToggle)}
>
{i18n.t('preview')}
</button>
)}
{/* A flex expander */}
<div class="flex-grow-1"></div>
<button
class="btn btn-sm text-muted"
data-tippy-content={i18n.t('bold')}
onClick={linkEvent(this, this.handleInsertBold)}
>
<svg class="icon icon-inline">
<use xlinkHref="#icon-bold"></use>
</svg>
</button>
<button
class="btn btn-sm text-muted"
data-tippy-content={i18n.t('italic')}
onClick={linkEvent(this, this.handleInsertItalic)}
>
<svg class="icon icon-inline">
<use xlinkHref="#icon-italic"></use>
</svg>
</button>
<button
class="btn btn-sm text-muted"
data-tippy-content={i18n.t('link')}
onClick={linkEvent(this, this.handleInsertLink)}
>
<svg class="icon icon-inline">
<use xlinkHref="#icon-link"></use>
</svg>
</button>
<form class="btn btn-sm text-muted font-weight-bold">
<label
htmlFor={`file-upload-${this.id}`}
className={`mb-0 ${UserService.Instance.user && 'pointer'}`}
data-tippy-content={i18n.t('upload_image')}
>
{this.state.imageLoading ? (
<svg class="icon icon-spinner spin">
<use xlinkHref="#icon-spinner"></use>
</svg>
) : (
<svg class="icon icon-inline">
<use xlinkHref="#icon-image"></use>
</svg>
)}
</label>
<input
id={`file-upload-${this.id}`}
type="file"
accept="image/*,video/*"
name="file"
class="d-none"
disabled={!UserService.Instance.user}
onChange={linkEvent(this, this.handleImageUpload)}
/>
</form>
<button
class="btn btn-sm text-muted"
data-tippy-content={i18n.t('header')}
onClick={linkEvent(this, this.handleInsertHeader)}
>
<svg class="icon icon-inline">
<use xlinkHref="#icon-header"></use>
</svg>
</button>
<button
class="btn btn-sm text-muted"
data-tippy-content={i18n.t('strikethrough')}
onClick={linkEvent(this, this.handleInsertStrikethrough)}
>
<svg class="icon icon-inline">
<use xlinkHref="#icon-strikethrough"></use>
</svg>
</button>
<button
class="btn btn-sm text-muted"
data-tippy-content={i18n.t('quote')}
onClick={linkEvent(this, this.handleInsertQuote)}
>
<svg class="icon icon-inline">
<use xlinkHref="#icon-format_quote"></use>
</svg>
</button>
<button
class="btn btn-sm text-muted"
data-tippy-content={i18n.t('list')}
onClick={linkEvent(this, this.handleInsertList)}
>
<svg class="icon icon-inline">
<use xlinkHref="#icon-list"></use>
</svg>
</button>
<button
class="btn btn-sm text-muted"
data-tippy-content={i18n.t('code')}
onClick={linkEvent(this, this.handleInsertCode)}
>
<svg class="icon icon-inline">
<use xlinkHref="#icon-code"></use>
</svg>
</button>
<button
class="btn btn-sm text-muted"
data-tippy-content={i18n.t('subscript')}
onClick={linkEvent(this, this.handleInsertSubscript)}
>
<svg class="icon icon-inline">
<use xlinkHref="#icon-subscript"></use>
</svg>
</button>
<button
class="btn btn-sm text-muted"
data-tippy-content={i18n.t('superscript')}
onClick={linkEvent(this, this.handleInsertSuperscript)}
>
<svg class="icon icon-inline">
<use xlinkHref="#icon-superscript"></use>
</svg>
</button>
<button
class="btn btn-sm text-muted"
data-tippy-content={i18n.t('spoiler')}
onClick={linkEvent(this, this.handleInsertSpoiler)}
>
<svg class="icon icon-inline">
<use xlinkHref="#icon-alert-triangle"></use>
</svg>
</button>
<a
href={markdownHelpUrl}
target="_blank"
class="btn btn-sm text-muted font-weight-bold"
title={i18n.t('formatting_help')}
rel="noopener"
>
<svg class="icon icon-inline">
<use xlinkHref="#icon-help-circle"></use>
</svg>
</a>
</div>
</div>
</form>
);
}
handleImageUploadPaste(i: MarkdownTextArea, event: any) {
let image = event.clipboardData.files[0];
if (image) {
i.handleImageUpload(i, image);
}
}
handleImageUpload(i: MarkdownTextArea, event: any) {
let file: any;
if (event.target) {
event.preventDefault();
file = event.target.files[0];
} else {
file = event;
}
const imageUploadUrl = `/pictrs/image`;
const formData = new FormData();
formData.append('images[]', file);
i.state.imageLoading = true;
i.setState(i.state);
fetch(imageUploadUrl, {
method: 'POST',
body: formData,
})
.then(res => res.json())
.then(res => {
console.log('pictrs upload:');
console.log(res);
if (res.msg == 'ok') {
let hash = res.files[0].file;
let url = `${window.location.origin}/pictrs/image/${hash}`;
let deleteToken = res.files[0].delete_token;
let deleteUrl = `${window.location.origin}/pictrs/image/delete/${deleteToken}/${hash}`;
let imageMarkdown = `![](${url})`;
let content = i.state.content;
content = content ? `${content}\n${imageMarkdown}` : imageMarkdown;
i.state.content = content;
i.state.imageLoading = false;
i.setState(i.state);
let textarea: any = document.getElementById(i.id);
autosize.update(textarea);
pictrsDeleteToast(
i18n.t('click_to_delete_picture'),
i18n.t('picture_deleted'),
deleteUrl
);
} else {
i.state.imageLoading = false;
i.setState(i.state);
toast(JSON.stringify(res), 'danger');
}
})
.catch(error => {
i.state.imageLoading = false;
i.setState(i.state);
toast(error, 'danger');
});
}
handleContentChange(i: MarkdownTextArea, event: any) {
i.state.content = event.target.value;
i.setState(i.state);
if (i.props.onContentChange) {
i.props.onContentChange(i.state.content);
}
}
handlePreviewToggle(i: MarkdownTextArea, event: any) {
event.preventDefault();
i.state.previewMode = !i.state.previewMode;
i.setState(i.state);
}
handleSubmit(i: MarkdownTextArea, event: any) {
event.preventDefault();
i.state.loading = true;
i.setState(i.state);
let msg = { val: i.state.content, formId: i.formId };
i.props.onSubmit(msg);
}
handleReplyCancel(i: MarkdownTextArea) {
i.props.onReplyCancel();
}
handleInsertLink(i: MarkdownTextArea, event: any) {
event.preventDefault();
if (!i.state.content) {
i.state.content = '';
}
let textarea: any = document.getElementById(i.id);
let start: number = textarea.selectionStart;
let end: number = textarea.selectionEnd;
if (start !== end) {
let selectedText = i.state.content.substring(start, end);
i.state.content = `${i.state.content.substring(
0,
start
)} [${selectedText}]() ${i.state.content.substring(end)}`;
textarea.focus();
setTimeout(() => (textarea.selectionEnd = end + 4), 10);
} else {
i.state.content += '[]()';
textarea.focus();
setTimeout(() => (textarea.selectionEnd -= 1), 10);
}
i.setState(i.state);
}
simpleSurround(chars: string) {
this.simpleSurroundBeforeAfter(chars, chars);
}
simpleSurroundBeforeAfter(beforeChars: string, afterChars: string) {
if (!this.state.content) {
this.state.content = '';
}
let textarea: any = document.getElementById(this.id);
let start: number = textarea.selectionStart;
let end: number = textarea.selectionEnd;
if (start !== end) {
let selectedText = this.state.content.substring(start, end);
this.state.content = `${this.state.content.substring(
0,
start - 1
)} ${beforeChars}${selectedText}${afterChars} ${this.state.content.substring(
end + 1
)}`;
} else {
this.state.content += `${beforeChars}___${afterChars}`;
}
this.setState(this.state);
setTimeout(() => {
autosize.update(textarea);
}, 10);
}
handleInsertBold(i: MarkdownTextArea, event: any) {
event.preventDefault();
i.simpleSurround('**');
}
handleInsertItalic(i: MarkdownTextArea, event: any) {
event.preventDefault();
i.simpleSurround('*');
}
handleInsertCode(i: MarkdownTextArea, event: any) {
event.preventDefault();
i.simpleSurround('`');
}
handleInsertStrikethrough(i: MarkdownTextArea, event: any) {
event.preventDefault();
i.simpleSurround('~~');
}
handleInsertList(i: MarkdownTextArea, event: any) {
event.preventDefault();
i.simpleInsert('-');
}
handleInsertQuote(i: MarkdownTextArea, event: any) {
event.preventDefault();
i.simpleInsert('>');
}
handleInsertHeader(i: MarkdownTextArea, event: any) {
event.preventDefault();
i.simpleInsert('#');
}
handleInsertSubscript(i: MarkdownTextArea, event: any) {
event.preventDefault();
i.simpleSurround('~');
}
handleInsertSuperscript(i: MarkdownTextArea, event: any) {
event.preventDefault();
i.simpleSurround('^');
}
simpleInsert(chars: string) {
if (!this.state.content) {
this.state.content = `${chars} `;
} else {
this.state.content += `\n${chars} `;
}
let textarea: any = document.getElementById(this.id);
textarea.focus();
setTimeout(() => {
autosize.update(textarea);
}, 10);
this.setState(this.state);
}
handleInsertSpoiler(i: MarkdownTextArea, event: any) {
event.preventDefault();
let beforeChars = `\n::: spoiler ${i18n.t('spoiler')}\n`;
let afterChars = '\n:::\n';
i.simpleSurroundBeforeAfter(beforeChars, afterChars);
}
quoteInsert() {
let textarea: any = document.getElementById(this.id);
let selectedText = window.getSelection().toString();
if (selectedText) {
let quotedText =
selectedText
.split('\n')
.map(t => `> ${t}`)
.join('\n') + '\n\n';
this.state.content = quotedText;
this.setState(this.state);
// Not sure why this needs a delay
setTimeout(() => autosize.update(textarea), 10);
}
}
}