Depending on the type of the action, the method either applies the inverse action (for the "change" and "removeAll" types) or restores data (for the "add" and "remove" types).
note
If the history is empty, the module is disabled, or no inverse action is available (for actions with the "change" and "removeAll" types), the error event is triggered.
const grid = new dhx.Grid("grid_container", {
columns: [
{ id: "name", header: [{ text: "Name" }] },
{ id: "value", header: [{ text: "Value" }] },
],
data: [
{ id: "1", name: "Item 1", value: 10 },
{ id: "2", name: "Item 2", value: 20 },
],
history: true
});
const removedData = grid.data.serialize();
grid.data.removeAll();
grid.history.add({
type: "removeAll",
batch: [],
inverse: { type: "add", batch: removedData },
});
grid.history.undo();
console.log(grid.history.getHistory().length);
console.log(grid.history.canRedo());
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