lingo3d/lib/api/undoStack.js

Lingo3D is a React/Vue 3d game development framework that ships with a complete visual editor

import { uuidMap } from "../collections/idCollections";
import { flushMultipleSelectionTargets } from "../states/useMultipleSelectionTargets";
import deserialize from "./serializer/deserialize";
const undoStack = [];
const redoStack = [];
export const pushUndoStack = (commandRecord) => {
    undoStack.push(commandRecord);
    redoStack.length = 0;
};
export const undo = () => flushMultipleSelectionTargets(() => {
    const commandRecord = undoStack.pop();
    if (!commandRecord)
        return;
    for (const [uuid, command] of Object.entries(commandRecord)) {
        const manager = uuidMap.get(uuid);
        if (command.command === "update")
            Object.assign(manager, command.commandPrev);
        else if (command.command === "delete")
            deserialize([command]);
        else if (command.command === "create")
            manager.dispose();
        else if (command.command === "group") {
            let i = 0;
            for (const uuid of command.commandChildren) {
                const child = uuidMap.get(uuid);
                const parent = uuidMap.get(command.commandParents[i++]);
                parent.attach(child);
            }
            manager.dispose();
        }
        else if (command.command === "move")
            uuidMap.get(command.commandFrom).attach(manager);
    }
    redoStack.push(commandRecord);
}, true);
export const redo = () => flushMultipleSelectionTargets(() => {
    const commandRecord = redoStack.pop();
    if (!commandRecord)
        return;
    for (const [uuid, command] of Object.entries(commandRecord)) {
        const manager = uuidMap.get(uuid);
        if (command.command === "update")
            Object.assign(manager, command.commandNext);
        else if (command.command === "delete")
            manager.dispose();
        else if (command.command === "create")
            deserialize([command]);
        else if (command.command === "group") {
            const group = deserialize([command])[0];
            for (const uuid of command.commandChildren)
                group.attach(uuidMap.get(uuid));
        }
        else if (command.command === "move")
            uuidMap.get(command.commandTo).attach(manager);
    }
    undoStack.push(commandRecord);
}, true);
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