Add a Compound hook. (#3979)

* Rename AppHooksProtocol.configure() to .setUp().

* Add a CompoundHook.

ElementX.xcodeproj/project.pbxproj

@@ -254,6 +254,7 @@
 		30CC4F796B27BE8B1DFDBF5A /* NSEUserSession.swift in Sources */ = {isa = PBXBuildFile; fileRef = EEAA2832D93EC7D2608703FB /* NSEUserSession.swift */; };
 		30E5628F74AD3C27A061BF25 /* QRCodeLoginScreenViewModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3BC1B7CB061C9865B2B91B56 /* QRCodeLoginScreenViewModel.swift */; };
 		3113065AABBC14CEAE6843FA /* UserSessionFlowCoordinatorStateMachine.swift in Sources */ = {isa = PBXBuildFile; fileRef = E8774CF614849664B5B3C2A1 /* UserSessionFlowCoordinatorStateMachine.swift */; };
+		311868F5E65BA61AFA6CCC2C /* CompoundHook.swift in Sources */ = {isa = PBXBuildFile; fileRef = 8B89D6C760E8CAE29CA28FB1 /* CompoundHook.swift */; };
 		3118D9ABFD4BE5A3492FF88A /* ElementCallConfiguration.swift in Sources */ = {isa = PBXBuildFile; fileRef = CC437C491EA6996513B1CEAB /* ElementCallConfiguration.swift */; };
 		32B7891D937377A59606EDFC /* UserFlowTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 21DD8599815136EFF5B73F38 /* UserFlowTests.swift */; };
 		32F47002A331817F0E6BD7EB /* RoomMembershipDetailsProxyProtocol.swift in Sources */ = {isa = PBXBuildFile; fileRef = 1434D5169F0EE319E226DA7F /* RoomMembershipDetailsProxyProtocol.swift */; };
@@ -2013,6 +2014,7 @@
 		8AE0C9653870803E4F91F474 /* RoomListFiltersStateTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RoomListFiltersStateTests.swift; sourceTree = "<group>"; };
 		8AE78FA0011E07920AE83135 /* PlainMentionBuilder.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PlainMentionBuilder.swift; sourceTree = "<group>"; };
 		8AFCE895ECFFA53FEE64D62B /* MediaLoader.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MediaLoader.swift; sourceTree = "<group>"; };
+		8B89D6C760E8CAE29CA28FB1 /* CompoundHook.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CompoundHook.swift; sourceTree = "<group>"; };
 		8BCCE3D12B0A9C6E559B5B5A /* EmojiProviderProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = EmojiProviderProtocol.swift; sourceTree = "<group>"; };
 		8BD9C9A31D9AB3B6D8128E69 /* KnockRequestsListScreenModels.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = KnockRequestsListScreenModels.swift; sourceTree = "<group>"; };
 		8BEBF0E59F25E842EDB6FD11 /* LocationSharingScreenModels.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = LocationSharingScreenModels.swift; sourceTree = "<group>"; };
@@ -3160,6 +3162,7 @@
 				25586C0ADB814FEE9897DCAA /* BugReportHook.swift */,
 				3865AD7B7249C939D7C69C33 /* CertificateValidatorHook.swift */,
 				7AC0CD1CAFD3F8B057F9AEA5 /* ClientBuilderHook.swift */,
+				8B89D6C760E8CAE29CA28FB1 /* CompoundHook.swift */,
 			);
 			path = Hooks;
 			sourceTree = "<group>";
@@ -6989,6 +6992,7 @@
 				94E15D018D70563FA4AB4E5A /* ComposerToolbarModels.swift in Sources */,
 				71AC1CAAC23403FFE847F2C9 /* ComposerToolbarViewModel.swift in Sources */,
 				4A4110369DBB79E4A314F415 /* ComposerToolbarViewModelProtocol.swift in Sources */,
+				311868F5E65BA61AFA6CCC2C /* CompoundHook.swift in Sources */,
 				A6B83EB78F025D21B6EBA90C /* CompoundIcon.swift in Sources */,
 				EA6613B29BA671F39CE1B1D2 /* ConfirmationDialog.swift in Sources */,
 				AC7AA215D60FBC307F984028 /* Consumable.swift in Sources */,

ElementX/Sources/AppHooks/AppHooks.swift

@@ -14,6 +14,11 @@ class AppHooks: AppHooksProtocol {
         appSettingsHook = hook
     }
     
+    private(set) var compoundHook: CompoundHookProtocol = DefaultCompoundHook()
+    func registerCompoundHook(_ hook: CompoundHookProtocol) {
+        compoundHook = hook
+    }
+    
     private(set) var bugReportHook: BugReportHookProtocol = DefaultBugReportHook()
     func registerBugReportHook(_ hook: BugReportHookProtocol) {
         bugReportHook = hook
@@ -32,9 +37,9 @@ class AppHooks: AppHooksProtocol {
 }
 
 protocol AppHooksProtocol {
-    func configure()
+    func setUp()
 }
 
 extension AppHooksProtocol {
-    func configure() { }
+    func setUp() { }
 }

ElementX/Sources/AppHooks/Hooks/CompoundHook.swift

@@ -0,0 +1,16 @@
+//
+// Copyright 2025 New Vector Ltd.
+//
+// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+// Please see LICENSE files in the repository root for full details.
+//
+
+import Compound
+
+protocol CompoundHookProtocol {
+    func override(colors: CompoundColors, uiColors: CompoundUIColors)
+}
+
+struct DefaultCompoundHook: CompoundHookProtocol {
+    func override(colors: CompoundColors, uiColors: CompoundUIColors) { }
+}

ElementX/Sources/Application/AppCoordinator.swift

@@ -61,7 +61,10 @@ class AppCoordinator: AppCoordinatorProtocol, AuthenticationFlowCoordinatorDeleg
 
     init(appDelegate: AppDelegate) {
         let appHooks = AppHooks()
-        appHooks.configure()
+        appHooks.setUp()
+        
+        // Override colours before we start building any UI components.
+        appHooks.compoundHook.override(colors: Color.compound, uiColors: UIColor.compound)
         
         windowManager = WindowManager(appDelegate: appDelegate)
         let networkMonitor = NetworkMonitor()