83 lines
2.5 KiB
TypeScript
83 lines
2.5 KiB
TypeScript
import { createOpaqueId } from "../core/ids";
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import { cloneEditorSelection, type EditorSelection } from "../core/selection";
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import type { ToolMode } from "../core/tool-mode";
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import { cloneModelInstance, type ModelInstance } from "../assets/model-instances";
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import type { EditorCommand } from "./command";
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function selectionIncludesModelInstance(selection: EditorSelection, modelInstanceId: string): boolean {
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return selection.kind === "modelInstances" && selection.ids.includes(modelInstanceId);
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}
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export function createDeleteModelInstanceCommand(modelInstanceId: string): EditorCommand {
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let previousModelInstance: ModelInstance | null = null;
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let previousSelection: EditorSelection | null = null;
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let previousToolMode: ToolMode | null = null;
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return {
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id: createOpaqueId("command"),
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label: "Delete model instance",
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execute(context) {
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const currentDocument = context.getDocument();
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const currentModelInstance = currentDocument.modelInstances[modelInstanceId];
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if (currentModelInstance === undefined) {
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throw new Error(`Model instance ${modelInstanceId} does not exist.`);
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}
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if (previousModelInstance === null) {
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previousModelInstance = cloneModelInstance(currentModelInstance);
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}
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if (previousSelection === null) {
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previousSelection = cloneEditorSelection(context.getSelection());
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}
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if (previousToolMode === null) {
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previousToolMode = context.getToolMode();
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}
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const nextModelInstances = {
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...currentDocument.modelInstances
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};
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delete nextModelInstances[modelInstanceId];
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context.setDocument({
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...currentDocument,
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modelInstances: nextModelInstances
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});
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if (selectionIncludesModelInstance(context.getSelection(), modelInstanceId)) {
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context.setSelection({
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kind: "none"
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});
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}
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context.setToolMode("select");
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},
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undo(context) {
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if (previousModelInstance === null) {
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return;
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}
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const currentDocument = context.getDocument();
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context.setDocument({
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...currentDocument,
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modelInstances: {
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...currentDocument.modelInstances,
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[previousModelInstance.id]: cloneModelInstance(previousModelInstance)
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}
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});
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if (previousSelection !== null) {
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context.setSelection(previousSelection);
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}
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if (previousToolMode !== null) {
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context.setToolMode(previousToolMode);
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}
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}
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};
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}
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