[Glitch] Change RTL detection to rely on unicode-bidi paragraph by paragraph

Port 812f2bdb8f to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/components/autosuggest_input.js

@@ -4,7 +4,6 @@ import AutosuggestEmoji from './autosuggest_emoji';
 import AutosuggestHashtag from './autosuggest_hashtag';
 import ImmutablePropTypes from 'react-immutable-proptypes';
 import PropTypes from 'prop-types';
-import { isRtl } from 'flavours/glitch/util/rtl';
 import ImmutablePureComponent from 'react-immutable-pure-component';
 import classNames from 'classnames';
 import { List as ImmutableList } from 'immutable';
@@ -189,11 +188,6 @@ export default class AutosuggestInput extends ImmutablePureComponent {
   render () {
     const { value, suggestions, disabled, placeholder, onKeyUp, autoFocus, className, id, maxLength } = this.props;
     const { suggestionsHidden } = this.state;
-    const style = { direction: 'ltr' };
-
-    if (isRtl(value)) {
-      style.direction = 'rtl';
-    }
 
     return (
       <div className='autosuggest-input'>
@@ -212,7 +206,7 @@ export default class AutosuggestInput extends ImmutablePureComponent {
             onKeyUp={onKeyUp}
             onFocus={this.onFocus}
             onBlur={this.onBlur}
-            style={style}
+            dir='auto'
             aria-autocomplete='list'
             id={id}
             className={className}

app/javascript/flavours/glitch/components/autosuggest_textarea.js

@@ -4,7 +4,6 @@ import AutosuggestEmoji from './autosuggest_emoji';
 import AutosuggestHashtag from './autosuggest_hashtag';
 import ImmutablePropTypes from 'react-immutable-proptypes';
 import PropTypes from 'prop-types';
-import { isRtl } from 'flavours/glitch/util/rtl';
 import ImmutablePureComponent from 'react-immutable-pure-component';
 import Textarea from 'react-textarea-autosize';
 import classNames from 'classnames';
@@ -195,11 +194,6 @@ export default class AutosuggestTextarea extends ImmutablePureComponent {
   render () {
     const { value, suggestions, disabled, placeholder, onKeyUp, autoFocus, children } = this.props;
     const { suggestionsHidden } = this.state;
-    const style = { direction: 'ltr' };
-
-    if (isRtl(value)) {
-      style.direction = 'rtl';
-    }
 
     return [
       <div className='compose-form__autosuggest-wrapper' key='autosuggest-wrapper'>
@@ -220,7 +214,7 @@ export default class AutosuggestTextarea extends ImmutablePureComponent {
               onFocus={this.onFocus}
               onBlur={this.onBlur}
               onPaste={this.onPaste}
-              style={style}
+              dir='auto'
               aria-autocomplete='list'
             />
           </label>

app/javascript/flavours/glitch/components/status_content.js

@@ -1,7 +1,6 @@
 import React from 'react';
 import ImmutablePropTypes from 'react-immutable-proptypes';
 import PropTypes from 'prop-types';
-import { isRtl } from 'flavours/glitch/util/rtl';
 import { FormattedMessage } from 'react-intl';
 import Permalink from './permalink';
 import classnames from 'classnames';
@@ -277,16 +276,11 @@ export default class StatusContent extends React.PureComponent {
 
     const content = { __html: status.get('contentHtml') };
     const spoilerContent = { __html: status.get('spoilerHtml') };
-    const directionStyle = { direction: 'ltr' };
     const classNames = classnames('status__content', {
       'status__content--with-action': parseClick && !disabled,
       'status__content--with-spoiler': status.get('spoiler_text').length > 0,
     });
 
-    if (isRtl(status.get('search_index'))) {
-      directionStyle.direction = 'rtl';
-    }
-
     if (status.get('spoiler_text').length > 0) {
       let mentionsPlaceholder = '';
 
@@ -346,7 +340,6 @@ export default class StatusContent extends React.PureComponent {
             <div
               ref={this.setContentsRef}
               key={`contents-${tagLinks}`}
-              style={directionStyle}
               tabIndex={!hidden ? 0 : null}
               dangerouslySetInnerHTML={content}
               className='status__content__text'
@@ -360,7 +353,6 @@ export default class StatusContent extends React.PureComponent {
       return (
         <div
           className={classNames}
-          style={directionStyle}
           onMouseDown={this.handleMouseDown}
           onMouseUp={this.handleMouseUp}
           tabIndex='0'
@@ -380,7 +372,6 @@ export default class StatusContent extends React.PureComponent {
       return (
         <div
           className='status__content'
-          style={directionStyle}
           tabIndex='0'
           ref={this.setRef}
         >

app/javascript/flavours/glitch/features/compose/components/reply_indicator.js

@@ -10,9 +10,6 @@ import AccountContainer from 'flavours/glitch/containers/account_container';
 import IconButton from 'flavours/glitch/components/icon_button';
 import AttachmentList from 'flavours/glitch/components/attachment_list';
 
-//  Utils.
-import { isRtl } from 'flavours/glitch/util/rtl';
-
 //  Messages.
 const messages = defineMessages({
   cancel: {
@@ -71,7 +68,6 @@ class ReplyIndicator extends ImmutablePureComponent {
         <div
           className='content'
           dangerouslySetInnerHTML={{ __html: content || '' }}
-          style={{ direction: isRtl(content) ? 'rtl' : 'ltr' }}
         />
         {attachments.size > 0 && (
           <AttachmentList

app/javascript/flavours/glitch/styles/components/status.scss

@@ -70,6 +70,7 @@
   p, pre, blockquote {
     margin-bottom: 20px;
     white-space: pre-wrap;
+    unicode-bidi: plaintext;
 
     &:last-child {
       margin-bottom: 0;
@@ -152,6 +153,7 @@
   a {
     color: $secondary-text-color;
     text-decoration: none;
+    unicode-bidi: isolate;
 
     &:hover {
       text-decoration: underline;

app/javascript/flavours/glitch/util/rtl.js

@@ -1,32 +0,0 @@
-// U+0590  to U+05FF  - Hebrew
-// U+0600  to U+06FF  - Arabic
-// U+0700  to U+074F  - Syriac
-// U+0750  to U+077F  - Arabic Supplement
-// U+0780  to U+07BF  - Thaana
-// U+07C0  to U+07FF  - N'Ko
-// U+0800  to U+083F  - Samaritan
-// U+08A0  to U+08FF  - Arabic Extended-A
-// U+FB1D  to U+FB4F  - Hebrew presentation forms
-// U+FB50  to U+FDFF  - Arabic presentation forms A
-// U+FE70  to U+FEFF  - Arabic presentation forms B
-
-const rtlChars = /[\u0590-\u083F]|[\u08A0-\u08FF]|[\uFB1D-\uFDFF]|[\uFE70-\uFEFF]/mg;
-
-export function isRtl(text) {
-  if (text.length === 0) {
-    return false;
-  }
-
-  text = text.replace(/(?:^|[^\/\w])@([a-z0-9_]+(@[a-z0-9\.\-]+)?)/ig, '');
-  text = text.replace(/(?:^|[^\/\w])#([\S]+)/ig, '');
-  text = text.replace(/\s+/g, '');
-  text = text.replace(/(\w\S+\.\w{2,}\S*)/g, '');
-
-  const matches = text.match(rtlChars);
-
-  if (!matches) {
-    return false;
-  }
-
-  return matches.length / text.length > 0.3;
-};