dmn-js-decision-table/lib/features/copy-cut-paste/cmd/PasteHandler.js

A decision table view for dmn-js

import { Row, Col } from 'table-js/lib/model';
import { reviveDescriptor } from '../DescriptorUtil';

/**
 * A handler that implements pasting elements.
 */
export default class PasteHandler {
  constructor(clipboard, dmnFactory, elementFactory, elementRegistry, eventBus, moddle, modeling, sheet) {
    this._clipboard = clipboard;
    this._dmnFactory = dmnFactory;
    this._elementFactory = elementFactory;
    this._elementRegistry = elementRegistry;
    this._eventBus = eventBus;
    this._model = moddle;
    this._modeling = modeling;
    this._sheet = sheet;
  }

  /**
   * <do>
   */
  postExecute(context) {
    let {
      element,
      after
    } = context;
    const data = this._clipboard.get();
    if (!data) {
      throw new Error('missing clipboard data');
    }
    const root = this._sheet.getRoot();

    // (1) create elements from descriptors
    const elements = reviveDescriptor(data.elements, {
      _dmnFactory: this._dmnFactory,
      _keepIds: data.keepIds,
      _model: this._model
    }).root;

    // (2) add elements to sheet
    if (element instanceof Row) {
      let index = root.rows.indexOf(element);
      if (index === -1) {
        return;
      }
      elements.forEach(element => {
        if (after) {
          index++;
        }
        this._modeling.addRow(element, index);
      });
    } else if (element instanceof Col) {
      let index = root.cols.indexOf(element);
      if (index === -1) {
        return;
      }
      elements.forEach(element => {
        if (after) {
          index++;
        }
        this._modeling.addCol(element, index);
      });
    }
    context.oldElements = this._clipboard.get();
    return this._sheet.getRoot();
  }

  /**
   * <undo>
   */
  revert(context) {}
}
PasteHandler.$inject = ['clipboard', 'dmnFactory', 'elementFactory', 'elementRegistry', 'eventBus', 'moddle', 'modeling', 'sheet'];
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