Add functionality for deleting project assets and related commands

src/commands/set-model-instance-authored-state-command.ts

@@ -0,0 +1,92 @@
+import { createOpaqueId } from "../core/ids";
+import { cloneModelInstance } from "../assets/model-instances";
+
+import type { EditorCommand } from "./command";
+
+interface SetModelInstanceAuthoredStateCommandOptions {
+  modelInstanceId: string;
+  visible?: boolean;
+  enabled?: boolean;
+}
+
+function createCommandLabel(
+  options: SetModelInstanceAuthoredStateCommandOptions
+): string {
+  if (options.enabled !== undefined && options.visible === undefined) {
+    return options.enabled ? "Enable model instance" : "Disable model instance";
+  }
+
+  if (options.visible !== undefined && options.enabled === undefined) {
+    return options.visible ? "Show model instance" : "Hide model instance";
+  }
+
+  return "Update model instance state";
+}
+
+export function createSetModelInstanceAuthoredStateCommand(
+  options: SetModelInstanceAuthoredStateCommandOptions
+): EditorCommand {
+  if (options.visible === undefined && options.enabled === undefined) {
+    throw new Error("Model instance authored state command requires at least one change.");
+  }
+
+  let previousVisible: boolean | null = null;
+  let previousEnabled: boolean | null = null;
+
+  return {
+    id: createOpaqueId("command"),
+    label: createCommandLabel(options),
+    execute(context) {
+      const currentDocument = context.getDocument();
+      const modelInstance = currentDocument.modelInstances[options.modelInstanceId];
+
+      if (modelInstance === undefined) {
+        throw new Error(`Model instance ${options.modelInstanceId} does not exist.`);
+      }
+
+      if (previousVisible === null) {
+        previousVisible = modelInstance.visible;
+      }
+
+      if (previousEnabled === null) {
+        previousEnabled = modelInstance.enabled;
+      }
+
+      context.setDocument({
+        ...currentDocument,
+        modelInstances: {
+          ...currentDocument.modelInstances,
+          [modelInstance.id]: cloneModelInstance({
+            ...modelInstance,
+            visible: options.visible ?? modelInstance.visible,
+            enabled: options.enabled ?? modelInstance.enabled
+          })
+        }
+      });
+    },
+    undo(context) {
+      if (previousVisible === null || previousEnabled === null) {
+        return;
+      }
+
+      const currentDocument = context.getDocument();
+      const modelInstance = currentDocument.modelInstances[options.modelInstanceId];
+
+      if (modelInstance === undefined) {
+        return;
+      }
+
+      context.setDocument({
+        ...currentDocument,
+        modelInstances: {
+          ...currentDocument.modelInstances,
+          [modelInstance.id]: cloneModelInstance({
+            ...modelInstance,
+            visible: previousVisible,
+            enabled: previousEnabled
+          })
+        }
+      });
+    }
+  };
+}