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

Port 9620ee90be7e04b3616ce4b851abb63dbba7af7f 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>

1 files changed, 11 insertions, 1 deletions

diff --git a/app/javascript/flavours/glitch/selectors/index.js b/app/javascript/flavours/glitch/selectors/index.js
index df46b58a8..83f8783d9 100644
--- a/app/javascript/flavours/glitch/selectors/index.js
+++ b/app/javascript/flavours/glitch/selectors/index.js
@@ -1,6 +1,6 @@
 import escapeTextContentForBrowser from 'escape-html';
 import { createSelector } from 'reselect';
-import { List as ImmutableList } from 'immutable';
+import { List as ImmutableList, Map as ImmutableMap, is } from 'immutable';
 import { toServerSideType } from 'flavours/glitch/utils/filters';
 import { me } from 'flavours/glitch/initial_state';
 
@@ -74,6 +74,16 @@ export const makeGetStatus = () => {
   );
 };
 
+export const makeGetPictureInPicture = () => {
+  return createSelector([
+    (state, { id }) => state.get('picture_in_picture').statusId === id,
+    (state) => state.getIn(['meta', 'layout']) !== 'mobile',
+  ], (inUse, available) => ImmutableMap({
+    inUse: inUse && available,
+    available,
+  }));
+};
+
 const getAlertsBase = state => state.get('alerts');
 
 export const getAlerts = createSelector([getAlertsBase], (base) => {