[Glitch] Fix unnecessary re-rendering of various components when typing in web UI (#2063)

Port 9620ee90be to glitch-soc

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

Signed-off-by: Claire <claire.github-309c@sitedethib.com>
Co-authored-by: Eugen Rochko <eugen@zeonfederated.com>

app/javascript/flavours/glitch/features/status/components/detailed_status.js

@@ -41,7 +41,10 @@ class DetailedStatus extends ImmutablePureComponent {
     domain: PropTypes.string.isRequired,
     compact: PropTypes.bool,
     showMedia: PropTypes.bool,
-    usingPiP: PropTypes.bool,
+    pictureInPicture: ImmutablePropTypes.contains({
+      inUse: PropTypes.bool,
+      available: PropTypes.bool,
+    }),
     onToggleMediaVisibility: PropTypes.func,
     intl: PropTypes.object.isRequired,
   };
@@ -120,7 +123,7 @@ class DetailedStatus extends ImmutablePureComponent {
 
   render () {
     const status = (this.props.status && this.props.status.get('reblog')) ? this.props.status.get('reblog') : this.props.status;
-    const { expanded, onToggleHidden, settings, usingPiP, intl } = this.props;
+    const { expanded, onToggleHidden, settings, pictureInPicture, intl } = this.props;
     const outerStyle = { boxSizing: 'border-box' };
     const { compact } = this.props;
 
@@ -153,7 +156,7 @@ class DetailedStatus extends ImmutablePureComponent {
       outerStyle.height = `${this.state.height}px`;
     }
 
-    if (usingPiP) {
+    if (pictureInPicture.get('inUse')) {
       media.push(<PictureInPicturePlaceholder />);
       mediaIcons.push('video-camera');
     } else if (status.get('media_attachments').size > 0) {

app/javascript/flavours/glitch/features/status/index.js

@@ -41,7 +41,7 @@ import { initMuteModal } from 'flavours/glitch/actions/mutes';
 import { initBlockModal } from 'flavours/glitch/actions/blocks';
 import { initReport } from 'flavours/glitch/actions/reports';
 import { initBoostModal } from 'flavours/glitch/actions/boosts';
-import { makeGetStatus } from 'flavours/glitch/selectors';
+import { makeGetStatus, makeGetPictureInPicture } from 'flavours/glitch/selectors';
 import ScrollContainer from 'flavours/glitch/containers/scroll_container';
 import ColumnBackButton from 'flavours/glitch/components/column_back_button';
 import ColumnHeader from '../../components/column_header';
@@ -72,6 +72,7 @@ const messages = defineMessages({
 
 const makeMapStateToProps = () => {
   const getStatus = makeGetStatus();
+  const getPictureInPicture = makeGetPictureInPicture();
 
   const getAncestorsIds = createSelector([
     (_, { id }) => id,
@@ -129,11 +130,12 @@ const makeMapStateToProps = () => {
 
   const mapStateToProps = (state, props) => {
     const status = getStatus(state, { id: props.params.statusId });
-    let ancestorsIds = Immutable.List();
+
+    let ancestorsIds   = Immutable.List();
     let descendantsIds = Immutable.List();
 
     if (status) {
-      ancestorsIds = getAncestorsIds(state, { id: status.get('in_reply_to_id') });
+      ancestorsIds   = getAncestorsIds(state, { id: status.get('in_reply_to_id') });
       descendantsIds = getDescendantsIds(state, { id: status.get('id') });
     }
 
@@ -145,7 +147,7 @@ const makeMapStateToProps = () => {
       settings: state.get('local_settings'),
       askReplyConfirmation: state.getIn(['local_settings', 'confirm_before_clearing_draft']) && state.getIn(['compose', 'text']).trim().length !== 0,
       domain: state.getIn(['meta', 'domain']),
-      usingPiP: state.get('picture_in_picture').statusId === props.params.statusId,
+      pictureInPicture: getPictureInPicture(state, { id: props.params.statusId }),
     };
   };
 
@@ -190,7 +192,10 @@ class Status extends ImmutablePureComponent {
     askReplyConfirmation: PropTypes.bool,
     multiColumn: PropTypes.bool,
     domain: PropTypes.string.isRequired,
-    usingPiP: PropTypes.bool,
+    pictureInPicture: ImmutablePropTypes.contains({
+      inUse: PropTypes.bool,
+      available: PropTypes.bool,
+    }),
   };
 
   state = {
@@ -604,7 +609,7 @@ class Status extends ImmutablePureComponent {
 
   render () {
     let ancestors, descendants;
-    const { isLoading, status, settings, ancestorsIds, descendantsIds, intl, domain, multiColumn, usingPiP } = this.props;
+    const { isLoading, status, settings, ancestorsIds, descendantsIds, intl, domain, multiColumn, pictureInPicture } = this.props;
     const { fullscreen } = this.state;
 
     if (isLoading) {
@@ -682,7 +687,7 @@ class Status extends ImmutablePureComponent {
                   domain={domain}
                   showMedia={this.state.showMedia}
                   onToggleMediaVisibility={this.handleToggleMediaVisibility}
-                  usingPiP={usingPiP}
+                  pictureInPicture={pictureInPicture}
                 />
 
                 <ActionBar