excalidraw/src/actions/actionSelectAll.ts

import { KEYS } from "../keys";
import { register } from "./register";
import { selectGroupsForSelectedElements } from "../groups";
import { getNonDeletedElements } from "../element";

export const actionSelectAll = register({
  name: "selectAll",
  perform: (elements, appState) => {
    if (appState.editingLinearElement) {
      return false;
    }
    return {
      appState: selectGroupsForSelectedElements(
        {
          ...appState,
          editingGroupId: null,
          selectedElementIds: elements.reduce((map, element) => {
            if (!element.isDeleted) {
              map[element.id] = true;
            }
            return map;
          }, {} as any),
        },
        getNonDeletedElements(elements),
      ),
      commitToHistory: true,
    };
  },
  contextItemLabel: "labels.selectAll",
  keyTest: (event) => event[KEYS.CTRL_OR_CMD] && event.key === "a",
});