Merge MutableAppContext into AppContext

There may have been a good reason for the difference at some point, or I was
still learning Rust. But now it's just &mut AppContext vs &AppContext.

crates/collab_ui/src/collab_titlebar_item.rs

@@ -15,7 +15,7 @@ use gpui::{
     geometry::{rect::RectF, vector::vec2f, PathBuilder},
     impl_internal_actions,
     json::{self, ToJson},
-    CursorStyle, Entity, ImageData, ModelHandle, MouseButton, MutableAppContext, RenderContext,
+    AppContext, CursorStyle, Entity, ImageData, ModelHandle, MouseButton, RenderContext,
     Subscription, View, ViewContext, ViewHandle, WeakViewHandle,
 };
 use settings::Settings;
@@ -40,7 +40,7 @@ impl_internal_actions!(collab, [LeaveCall]);
 #[derive(Copy, Clone, PartialEq)]
 pub(crate) struct LeaveCall;
 
-pub fn init(cx: &mut MutableAppContext) {
+pub fn init(cx: &mut AppContext) {
     cx.add_action(CollabTitlebarItem::toggle_collaborator_list_popover);
     cx.add_action(CollabTitlebarItem::toggle_contacts_popover);
     cx.add_action(CollabTitlebarItem::share_project);

crates/collab_ui/src/collab_ui.rs

@@ -13,13 +13,13 @@ mod sharing_status_indicator;
 use anyhow::anyhow;
 use call::ActiveCall;
 pub use collab_titlebar_item::{CollabTitlebarItem, ToggleContactsMenu};
-use gpui::{actions, MutableAppContext, Task};
+use gpui::{actions, AppContext, Task};
 use std::sync::Arc;
 use workspace::{AppState, JoinProject, ToggleFollow, Workspace};
 
 actions!(collab, [ToggleScreenSharing]);
 
-pub fn init(app_state: Arc<AppState>, cx: &mut MutableAppContext) {
+pub fn init(app_state: Arc<AppState>, cx: &mut AppContext) {
     collab_titlebar_item::init(cx);
     contact_notification::init(cx);
     contact_list::init(cx);
@@ -35,7 +35,7 @@ pub fn init(app_state: Arc<AppState>, cx: &mut MutableAppContext) {
     });
 }
 
-pub fn toggle_screen_sharing(_: &ToggleScreenSharing, cx: &mut MutableAppContext) {
+pub fn toggle_screen_sharing(_: &ToggleScreenSharing, cx: &mut AppContext) {
     if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
         let toggle_screen_sharing = room.update(cx, |room, cx| {
             if room.is_screen_sharing() {
@@ -48,13 +48,13 @@ pub fn toggle_screen_sharing(_: &ToggleScreenSharing, cx: &mut MutableAppContext
     }
 }
 
-fn join_project(action: &JoinProject, app_state: Arc<AppState>, cx: &mut MutableAppContext) {
+fn join_project(action: &JoinProject, app_state: Arc<AppState>, cx: &mut AppContext) {
     let project_id = action.project_id;
     let follow_user_id = action.follow_user_id;
     cx.spawn(|mut cx| async move {
         let existing_workspace = cx.update(|cx| {
             cx.window_ids()
-                .filter_map(|window_id| cx.root_view::<Workspace>(window_id))
+                .filter_map(|window_id| cx.root_view(window_id)?.clone().downcast::<Workspace>())
                 .find(|workspace| {
                     workspace.read(cx).project().read(cx).remote_id() == Some(project_id)
                 })

crates/collab_ui/src/contact_finder.rs

@@ -1,14 +1,14 @@
 use client::{ContactRequestStatus, User, UserStore};
 use gpui::{
-    elements::*, AnyViewHandle, AppContext, Entity, ModelHandle, MouseState, MutableAppContext,
-    RenderContext, Task, View, ViewContext, ViewHandle,
+    elements::*, AnyViewHandle, AppContext, Entity, ModelHandle, MouseState, RenderContext, Task,
+    View, ViewContext, ViewHandle,
 };
 use picker::{Picker, PickerDelegate};
 use settings::Settings;
 use std::sync::Arc;
 use util::TryFutureExt;
 
-pub fn init(cx: &mut MutableAppContext) {
+pub fn init(cx: &mut AppContext) {
     Picker::<ContactFinder>::init(cx);
 }
 

crates/collab_ui/src/contact_list.rs

@@ -10,8 +10,8 @@ use gpui::{
     geometry::{rect::RectF, vector::vec2f},
     impl_actions, impl_internal_actions,
     keymap_matcher::KeymapContext,
-    AppContext, CursorStyle, Entity, ModelHandle, MouseButton, MutableAppContext, PromptLevel,
-    RenderContext, Subscription, View, ViewContext, ViewHandle,
+    AppContext, CursorStyle, Entity, ModelHandle, MouseButton, PromptLevel, RenderContext,
+    Subscription, View, ViewContext, ViewHandle,
 };
 use menu::{Confirm, SelectNext, SelectPrev};
 use project::Project;
@@ -24,7 +24,7 @@ use workspace::{JoinProject, OpenSharedScreen};
 impl_actions!(contact_list, [RemoveContact, RespondToContactRequest]);
 impl_internal_actions!(contact_list, [ToggleExpanded, Call]);
 
-pub fn init(cx: &mut MutableAppContext) {
+pub fn init(cx: &mut AppContext) {
     cx.add_action(ContactList::remove_contact);
     cx.add_action(ContactList::respond_to_contact_request);
     cx.add_action(ContactList::cancel);

crates/collab_ui/src/contact_notification.rs

@@ -3,14 +3,14 @@ use std::sync::Arc;
 use crate::notifications::render_user_notification;
 use client::{ContactEventKind, User, UserStore};
 use gpui::{
-    elements::*, impl_internal_actions, Entity, ModelHandle, MutableAppContext, RenderContext,
+    elements::*, impl_internal_actions, Entity, ModelHandle, AppContext, RenderContext,
     View, ViewContext,
 };
 use workspace::notifications::Notification;
 
 impl_internal_actions!(contact_notifications, [Dismiss, RespondToContactRequest]);
 
-pub fn init(cx: &mut MutableAppContext) {
+pub fn init(cx: &mut AppContext) {
     cx.add_action(ContactNotification::dismiss);
     cx.add_action(ContactNotification::respond_to_contact_request);
 }

crates/collab_ui/src/contacts_popover.rs

@@ -1,7 +1,7 @@
 use crate::{contact_finder::ContactFinder, contact_list::ContactList, ToggleContactsMenu};
 use client::UserStore;
 use gpui::{
-    actions, elements::*, Entity, ModelHandle, MouseButton, MutableAppContext, RenderContext, View,
+    actions, elements::*, AppContext, Entity, ModelHandle, MouseButton, RenderContext, View,
     ViewContext, ViewHandle,
 };
 use project::Project;
@@ -9,7 +9,7 @@ use settings::Settings;
 
 actions!(contacts_popover, [ToggleContactFinder]);
 
-pub fn init(cx: &mut MutableAppContext) {
+pub fn init(cx: &mut AppContext) {
     cx.add_action(ContactsPopover::toggle_contact_finder);
 }
 

crates/collab_ui/src/incoming_call_notification.rs

@@ -4,7 +4,7 @@ use futures::StreamExt;
 use gpui::{
     elements::*,
     geometry::{rect::RectF, vector::vec2f},
-    impl_internal_actions, CursorStyle, Entity, MouseButton, MutableAppContext, RenderContext,
+    impl_internal_actions, CursorStyle, Entity, MouseButton, AppContext, RenderContext,
     View, ViewContext, WindowBounds, WindowKind, WindowOptions,
 };
 use settings::Settings;
@@ -13,7 +13,7 @@ use workspace::JoinProject;
 
 impl_internal_actions!(incoming_call_notification, [RespondToCall]);
 
-pub fn init(cx: &mut MutableAppContext) {
+pub fn init(cx: &mut AppContext) {
     cx.add_action(IncomingCallNotification::respond_to_call);
 
     let mut incoming_call = ActiveCall::global(cx).read(cx).incoming();

crates/collab_ui/src/project_shared_notification.rs

@@ -5,7 +5,7 @@ use gpui::{
     actions,
     elements::*,
     geometry::{rect::RectF, vector::vec2f},
-    CursorStyle, Entity, MouseButton, MutableAppContext, RenderContext, View, ViewContext,
+    CursorStyle, Entity, MouseButton, AppContext, RenderContext, View, ViewContext,
     WindowBounds, WindowKind, WindowOptions,
 };
 use settings::Settings;
@@ -14,7 +14,7 @@ use workspace::JoinProject;
 
 actions!(project_shared_notification, [DismissProject]);
 
-pub fn init(cx: &mut MutableAppContext) {
+pub fn init(cx: &mut AppContext) {
     cx.add_action(ProjectSharedNotification::join);
     cx.add_action(ProjectSharedNotification::dismiss);
 

crates/collab_ui/src/sharing_status_indicator.rs

@@ -2,13 +2,13 @@ use call::ActiveCall;
 use gpui::{
     color::Color,
     elements::{MouseEventHandler, Svg},
-    Appearance, Element, ElementBox, Entity, MouseButton, MutableAppContext, RenderContext, View,
+    Appearance, Element, ElementBox, Entity, MouseButton, AppContext, RenderContext, View,
 };
 use settings::Settings;
 
 use crate::ToggleScreenSharing;
 
-pub fn init(cx: &mut MutableAppContext) {
+pub fn init(cx: &mut AppContext) {
     let active_call = ActiveCall::global(cx);
 
     let mut status_indicator = None;