excalidraw/src/actions/actionDuplicateSelection.ts

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import { KEYS } from "../keys";
import { register } from "./register";
import { ExcalidrawElement } from "../element/types";
import { duplicateElement } from "../element";
export const actionDuplicateSelection = register({
name: "duplicateSelection",
perform: (elements, appState) => {
return {
appState,
elements: elements.reduce(
(acc: Array<ExcalidrawElement>, element: ExcalidrawElement) => {
if (appState.selectedElementIds[element.id]) {
const newElement = duplicateElement(element);
newElement.x = newElement.x + 10;
newElement.y = newElement.y + 10;
appState.selectedElementIds[newElement.id] = true;
delete appState.selectedElementIds[element.id];
return acc.concat([element, newElement]);
}
return acc.concat(element);
},
[],
),
};
},
contextItemLabel: "labels.duplicateSelection",
keyTest: event => event[KEYS.CTRL_OR_CMD] && event.key === "d",
});