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* @packageDocumentation
*
* User action classes for undoable editor operations.
*/
import type { WritableAtom } from "nanostores";
import { uuidv7 } from "uuidv7";
import type { Entity } from "../entity-manager";
import { LEVEL_REF } from "./components";
import type { EditorContext } from "./editor-context";
import { ProjectSlice } from "./slices/project-slice";
import { SelectionSlice } from "./slices/selection-slice";
import { LevelSlice } from "./slices/level-slice";
import { ChartSlice } from "./slices/chart-slice";
import type { UserAction } from "./types";
export class DeleteUserAction implements UserAction {
title = "Delete selection";
private ctx: EditorContext;
private entityIds: string[];
private entities: Entity[];
constructor(ctx: EditorContext, entityIds: string[], entities: Entity[]) {
this.ctx = ctx;
this.entityIds = entityIds;
this.entities = entities;
}
do(): void {
const em = this.ctx.get(ProjectSlice).entityManager;
for (const id of this.entityIds) {
em.delete(id);
}
this.ctx.get(SelectionSlice).$selection.set(new Set());
}
undo(): void {
const em = this.ctx.get(ProjectSlice).entityManager;
for (const entity of this.entities) {
em.restore(entity);
}
const chartId = this.ctx.get(ChartSlice).$selectedChartId.get();
const visibleLevels = new Set(
(chartId ? this.ctx.get(LevelSlice).getVisibleLevels(chartId) : []).map((l) => l.id),
);
const selection = new Set<string>();
for (const entity of this.entities) {
const levelRef = em.getComponent(entity, LEVEL_REF);
Iif (levelRef && !visibleLevels.has(levelRef.levelId)) continue;
selection.add(entity.id);
}
this.ctx.get(SelectionSlice).$selection.set(selection);
}
}
export class EraseUserAction implements UserAction {
title = "Erase entity";
private ctx: EditorContext;
private entityId: string;
private entitySnapshot: Entity;
constructor(ctx: EditorContext, entityId: string, entitySnapshot: Entity) {
this.ctx = ctx;
this.entityId = entityId;
this.entitySnapshot = entitySnapshot;
}
do(): void {
this.ctx.get(ProjectSlice).entityManager.delete(this.entityId);
this.ctx.get(SelectionSlice).$selection.set(new Set());
}
undo(): void {
this.ctx.get(ProjectSlice).entityManager.restore(this.entitySnapshot);
}
}
export class PlaceEntityUserAction implements UserAction {
title = "Place entity";
private ctx: EditorContext;
private entity: Entity;
private columnId: string;
private previousSelection: Set<string>;
private lastPlacedAtom: WritableAtom<{ entityId: string; columnId: string } | null>;
constructor(
ctx: EditorContext,
entity: Entity,
columnId: string,
previousSelection: Set<string>,
lastPlacedAtom: WritableAtom<{ entityId: string; columnId: string } | null>,
) {
this.ctx = ctx;
this.entity = entity;
this.columnId = columnId;
this.previousSelection = previousSelection;
this.lastPlacedAtom = lastPlacedAtom;
}
do(): void {
this.ctx.get(ProjectSlice).entityManager.insert(this.entity);
this.ctx.get(SelectionSlice).$selection.set(new Set([this.entity.id]));
this.lastPlacedAtom.set({
entityId: this.entity.id,
columnId: this.columnId,
});
}
undo(): void {
this.ctx.get(ProjectSlice).entityManager.delete(this.entity.id);
this.ctx.get(SelectionSlice).$selection.set(new Set(this.previousSelection));
this.lastPlacedAtom.set(null);
}
}
export class EditEntityUserAction implements UserAction {
title = "Edit entity";
private ctx: EditorContext;
private entityId: string;
private oldComponents: Record<string, unknown>;
private newComponents: Record<string, unknown>;
constructor(
ctx: EditorContext,
entityId: string,
oldComponents: Record<string, unknown>,
newComponents: Record<string, unknown>,
) {
this.ctx = ctx;
this.entityId = entityId;
this.oldComponents = oldComponents;
this.newComponents = newComponents;
}
do(): void {
const em = this.ctx.get(ProjectSlice).entityManager;
const entity = em.get(this.entityId);
if (!entity) return;
em.insert({
...entity,
components: structuredClone(this.newComponents),
version: uuidv7(),
});
}
undo(): void {
const em = this.ctx.get(ProjectSlice).entityManager;
const entity = em.get(this.entityId);
if (!entity) return;
em.insert({
...entity,
components: structuredClone(this.oldComponents),
version: uuidv7(),
});
}
}
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