Rename update_ui_context_system (#20532)

# Objective

The name of this system is really non-specific and it could be doing
anything.

## Solution

Rename `update_ui_context_system` to `propagate_ui_target_cameras`.

Author: ickshonpe

crates/bevy_ui/src/layout/mod.rs

@@ -373,7 +373,7 @@ mod tests {
 
     use crate::{
         layout::ui_surface::UiSurface, prelude::*, ui_layout_system,
-        update::update_ui_context_system, ContentSize, LayoutContext,
+        update::propagate_ui_target_cameras, ContentSize, LayoutContext,
     };
 
     // these window dimensions are easy to convert to and from percentage values
@@ -404,7 +404,7 @@ mod tests {
             (
                 // UI is driven by calculated camera target info, so we need to run the camera system first
                 bevy_render::camera::camera_system,
-                update_ui_context_system,
+                propagate_ui_target_cameras,
                 ApplyDeferred,
                 ui_layout_system,
                 mark_dirty_trees,
@@ -417,7 +417,7 @@ mod tests {
         app.configure_sets(
             PostUpdate,
             PropagateSet::<ComputedUiTargetCamera>::default()
-                .after(update_ui_context_system)
+                .after(propagate_ui_target_cameras)
                 .before(ui_layout_system),
         );
 
@@ -1067,7 +1067,7 @@ mod tests {
             (
                 // UI is driven by calculated camera target info, so we need to run the camera system first
                 bevy_render::camera::camera_system,
-                update_ui_context_system,
+                propagate_ui_target_cameras,
                 ApplyDeferred,
                 ui_layout_system,
             )
@@ -1081,7 +1081,7 @@ mod tests {
         app.configure_sets(
             PostUpdate,
             PropagateSet::<ComputedUiTargetCamera>::default()
-                .after(update_ui_context_system)
+                .after(propagate_ui_target_cameras)
                 .before(ui_layout_system),
         );
 

crates/bevy_ui/src/lib.rs

@@ -76,7 +76,7 @@ use bevy_transform::TransformSystems;
 use layout::ui_surface::UiSurface;
 use stack::ui_stack_system;
 pub use stack::UiStack;
-use update::{update_clipping_system, update_ui_context_system};
+use update::{propagate_ui_target_cameras, update_clipping_system};
 
 /// The basic plugin for Bevy UI
 #[derive(Default)]
@@ -183,7 +183,7 @@ impl Plugin for UiPlugin {
         app.add_systems(
             PostUpdate,
             (
-                update_ui_context_system.in_set(UiSystems::Prepare),
+                propagate_ui_target_cameras.in_set(UiSystems::Prepare),
                 ui_layout_system_config,
                 ui_stack_system
                     .in_set(UiSystems::Stack)

crates/bevy_ui/src/update.rs

@@ -133,7 +133,7 @@ fn update_clipping(
     }
 }
 
-pub fn update_ui_context_system(
+pub fn propagate_ui_target_cameras(
     mut commands: Commands,
     default_ui_camera: DefaultUiCamera,
     ui_scale: Res<UiScale>,
@@ -198,7 +198,7 @@ mod tests {
     use bevy_window::WindowResolution;
     use bevy_window::WindowScaleFactorChanged;
 
-    use crate::update::update_ui_context_system;
+    use crate::update::propagate_ui_target_cameras;
     use crate::ComputedUiTargetCamera;
     use crate::IsDefaultUiCamera;
     use crate::Node;
@@ -228,7 +228,11 @@ mod tests {
 
         app.add_systems(
             bevy_app::Update,
-            (bevy_render::camera::camera_system, update_ui_context_system).chain(),
+            (
+                bevy_render::camera::camera_system,
+                propagate_ui_target_cameras,
+            )
+                .chain(),
         );
 
         app

release-content/migration-guides/renamed_computednodetarget.md

@@ -1,6 +1,8 @@
 ---
-title: Renamed `ComputedNodeTarget` to `ComputedUiTargetCamera`
-pull_requests: [20519]
+title: Renamed `ComputedNodeTarget` and `update_ui_context_system`
+pull_requests: [20519, 20532]
 ---
 
-Rename `ComputedNodeTarget` to `ComputedUiTargetCamera`. New name chosen because the component's value is derived from `UiTargetCamera`.
+`ComputedNodeTarget` has been renamed to `ComputedUiTargetCamera`. New name chosen because the component's value is derived from `UiTargetCamera`.
+
+`update_ui_context_system` has been renamed to `propagate_ui_target_cameras`.