@doegis/core
Version:
DOE GIS API
3 lines (1 loc) • 424 B
JavaScript
class t{constructor(){this._operations=[],this._closed=!1}close(){this._closed=!0}apply(){for(const t of this._operations)t.apply()}undo(){for(let t=this._operations.length-1;t>=0;t--)this._operations[t].undo()}accumulate(t){if(this._closed)return!1;const o=this._operations.length?this._operations[this._operations.length-1]:null;return o&&o.accumulate(t)||(this._operations.push(t),t.apply()),!0}}export{t as UndoGroup};