Method _reset

modules/core/EditSystem.js:187–213

* _reset * Internal reset of all stored data

()

   * Internal reset of all stored data
   */
  _reset() {
    d3_select(document).interrupt('editTransition');    // complete any transition already in progress
    this.deferredBackup.cancel();


    // Create a new Base Graph / Base Edit.
    const baseGraph = new Graph();
    const base = new Edit({ graph: baseGraph });
    this._history = [ base ];
    this._index = 0;

    // Create a work-in-progress Edit derived from the base edit.
    const currGraph = new Graph(baseGraph);
    const staging = new Edit({ graph: currGraph });
    this._staging = staging;
    this._hasWorkInProgress = false;
    this._tree = new Tree(currGraph);

    this._lastStableGraph = baseGraph;
    this._lastStagingGraph = currGraph;
    this._fullDifference = new Difference(baseGraph, baseGraph);

    this._backupStatus = true;
    this._checkpoints.clear();
    this._inTransition = false;
    this._inTransaction = false;
  }


  /**