Do not scroll timelines when *closing* media modals

Media modals push an history state so that pressing back on mobile closes them.
We made sure to not scroll when opening them, but not when *closing* them,
which caused some issues in rare cases.

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

@@ -150,6 +150,7 @@ export default class ScrollableList extends PureComponent {
   }
 
   defaultShouldUpdateScroll = (prevRouterProps, { location }) => {
+    if ((((prevRouterProps || {}).location || {}).state || {}).mastodonModalOpen) return false;
     return !(location.state && location.state.mastodonModalOpen);
   }
 

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

@@ -90,7 +90,8 @@ export default class AccountGallery extends ImmutablePureComponent {
   }
 
   shouldUpdateScroll = (prevRouterProps, { location }) => {
-    return !(location.state && location.state.mastodonModalOpen)
+    if ((((prevRouterProps || {}).location || {}).state || {}).mastodonModalOpen) return false;
+    return !(location.state && location.state.mastodonModalOpen);
   }
 
   render () {

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

@@ -43,7 +43,8 @@ export default class Blocks extends ImmutablePureComponent {
   }
 
   shouldUpdateScroll = (prevRouterProps, { location }) => {
-    return !(location.state && location.state.mastodonModalOpen)
+    if ((((prevRouterProps || {}).location || {}).state || {}).mastodonModalOpen) return false;
+    return !(location.state && location.state.mastodonModalOpen);
   }
 
   render () {

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

@@ -34,6 +34,7 @@ export default class Favourites extends ImmutablePureComponent {
   }
 
   shouldUpdateScroll = (prevRouterProps, { location }) => {
+    if ((((prevRouterProps || {}).location || {}).state || {}).mastodonModalOpen) return false;
     return !(location.state && location.state.mastodonModalOpen);
   }
 

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

@@ -43,6 +43,7 @@ export default class FollowRequests extends ImmutablePureComponent {
   }
 
   shouldUpdateScroll = (prevRouterProps, { location }) => {
+    if ((((prevRouterProps || {}).location || {}).state || {}).mastodonModalOpen) return false;
     return !(location.state && location.state.mastodonModalOpen);
   }
 

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

@@ -57,6 +57,7 @@ export default class Followers extends ImmutablePureComponent {
   }
 
   shouldUpdateScroll = (prevRouterProps, { location }) => {
+    if ((((prevRouterProps || {}).location || {}).state || {}).mastodonModalOpen) return false;
     return !(location.state && location.state.mastodonModalOpen);
   }
 

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

@@ -57,7 +57,8 @@ export default class Following extends ImmutablePureComponent {
   }
 
   shouldUpdateScroll = (prevRouterProps, { location }) => {
-    return !(location.state && location.state.mastodonModalOpen)
+    if ((((prevRouterProps || {}).location || {}).state || {}).mastodonModalOpen) return false;
+    return !(location.state && location.state.mastodonModalOpen);
   }
 
   render () {

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

@@ -43,6 +43,7 @@ export default class Mutes extends ImmutablePureComponent {
   }
 
   shouldUpdateScroll = (prevRouterProps, { location }) => {
+    if ((((prevRouterProps || {}).location || {}).state || {}).mastodonModalOpen) return false;
     return !(location.state && location.state.mastodonModalOpen);
   }
 

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

@@ -34,6 +34,7 @@ export default class Reblogs extends ImmutablePureComponent {
   }
 
   shouldUpdateScroll = (prevRouterProps, { location }) => {
+    if ((((prevRouterProps || {}).location || {}).state || {}).mastodonModalOpen) return false;
     return !(location.state && location.state.mastodonModalOpen);
   }
 

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

@@ -364,7 +364,8 @@ export default class Status extends ImmutablePureComponent {
   }
 
   shouldUpdateScroll = (prevRouterProps, { location }) => {
-    return !(location.state && location.state.mastodonModalOpen)
+    if ((((prevRouterProps || {}).location || {}).state || {}).mastodonModalOpen) return false;
+    return !(location.state && location.state.mastodonModalOpen);
   }
 
   render () {