Add ability to initialize Presentation with custom props (#314)

* Add ability to supply presentation props

* rush change

* rush audit

common/changes/@itwin/viewer-react/presentation_props_2024-05-23-14-16.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@itwin/viewer-react",
+      "comment": "Added ability to supply custom Presentation initialization props",
+      "type": "minor"
+    }
+  ],
+  "packageName": "@itwin/viewer-react"
+}

packages/modules/viewer-react/src/services/BaseInitializer.ts

@@ -191,11 +191,7 @@ export class BaseInitializer {
       yield UiFramework.initialize(undefined);
 
       // initialize Presentation
-      yield Presentation.initialize({
-        presentation: {
-          activeLocale: IModelApp.localization.getLanguageList()[0],
-        },
-      });
+      yield Presentation.initialize(viewerOptions?.presentationProps);
 
       // Sync selection count & active selection scope between Presentation and AppUi. Runs after the Presentation is initialized.
       syncSelectionCount();

packages/modules/viewer-react/src/types.ts

@@ -32,6 +32,7 @@ import type {
   XAndY,
   XYAndZ,
 } from "@itwin/core-geometry";
+import { PresentationProps } from "@itwin/presentation-frontend";
 
 export type Without<T1, T2> = { [P in Exclude<keyof T1, keyof T2>]?: never };
 export type XOR<T1, T2> = T1 | T2 extends Record<string, unknown>
@@ -137,6 +138,8 @@ export interface ViewerInitializerParams extends ViewerIModelAppOptions {
   additionalI18nNamespaces?: string[];
   /** array of iTwin.js Extensions */
   extensions?: ExtensionProvider[];
+  /** Props for presentation initialization */
+  presentationProps?: PresentationProps
 }
 export type RequiredViewerProps = XOR<
   XOR<ConnectedViewerProps, FileViewerProps>,
@@ -192,6 +195,7 @@ const iTwinViewerInitializerParamSample: OptionalToUndefinedUnion<ViewerInitiali
     additionalI18nNamespaces: undefined,
     extensions: undefined,
     userPreferences: undefined,
+    presentationProps: undefined,
   };
 
 export const iTwinViewerInitializerParamList = Object.keys(