wisemapping-frontend/packages/mindplot/lib/components/commands/MoveControlPointCommand.js

/*
 *    Copyright [2015] [wisemapping]
 *
 *   Licensed under WiseMapping Public License, Version 1.0 (the "License").
 *   It is basically the Apache License, Version 2.0 (the "License") plus the
 *   "powered by wisemapping" text requirement on every single page;
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the license at
 *
 *       http://www.wisemapping.org/license
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */
const Command = require('../Command').default;

const MoveControlPointCommand = new Class(
  /** @lends MoveControlPointCommand */ {
    Extends: Command,
    /**
         * @classdesc This command handles do/undo of changing the control points of a relationship
         * arrow. These are the two points that appear when the relationship is on focus. They
         * influence how the arrow is drawn (not the source or the destination topic nor the arrow
         * direction)
         * @constructs
         * @param {ControlPoint} ctrlPointController
         * @param {Number} point 0 for the destination control point, 1 for the source control point
         * @param ctrlPointController {ControlPoint}
         * @param point {Number} 0 for the destination control point, 1 for the source control point
         */
    initialize(ctrlPointController, point) {
      $assert(ctrlPointController, 'line can not be null');
      $assert($defined(point), 'point can not be null');

      this.parent();
      this._ctrlPointControler = ctrlPointController;
      this._line = ctrlPointController._line;
      this._controlPoint = this._ctrlPointControler.getControlPoint(point).clone();
      this._oldControlPoint = this._ctrlPointControler.getOriginalCtrlPoint(point).clone();
      this._originalEndPoint = this._ctrlPointControler.getOriginalEndPoint(point).clone();
      switch (point) {
        case 0:
          this._wasCustom = this._line.getLine().isSrcControlPointCustom();
          this._endPoint = this._line.getLine().getFrom().clone();
          break;
        case 1:
          this._wasCustom = this._line.getLine().isDestControlPointCustom();
          this._endPoint = this._line.getLine().getTo().clone();
          break;
      }
      this._point = point;
    },

    /**
         * Overrides abstract parent method
         */
    execute(commandContext) {
      const model = this._line.getModel();
      switch (this._point) {
        case 0:
          model.setSrcCtrlPoint(this._controlPoint.clone());
          this._line.setFrom(this._endPoint.x, this._endPoint.y);
          this._line.setIsSrcControlPointCustom(true);
          this._line.setSrcControlPoint(this._controlPoint.clone());
          break;
        case 1:
          model.setDestCtrlPoint(this._controlPoint.clone());
          this._wasCustom = this._line.getLine().isDestControlPointCustom();
          this._line.setTo(this._endPoint.x, this._endPoint.y);
          this._line.setIsDestControlPointCustom(true);
          this._line.setDestControlPoint(this._controlPoint.clone());
          break;
      }
      if (this._line.isOnFocus()) {
        this._line._refreshShape();
        this._ctrlPointControler.setLine(this._line);
      }
      this._line.getLine().updateLine(this._point);
    },

    /**
         * Overrides abstract parent method
         * @see {@link mindplot.Command.undoExecute}
         */
    undoExecute(commandContext) {
      const line = this._line;
      const model = line.getModel();
      switch (this._point) {
        case 0:
          if ($defined(this._oldControlPoint)) {
            line.setFrom(this._originalEndPoint.x, this._originalEndPoint.y);
            model.setSrcCtrlPoint(this._oldControlPoint.clone());
            line.setSrcControlPoint(this._oldControlPoint.clone());
            line.setIsSrcControlPointCustom(this._wasCustom);
          }
          break;
        case 1:
          if ($defined(this._oldControlPoint)) {
            line.setTo(this._originalEndPoint.x, this._originalEndPoint.y);
            model.setDestCtrlPoint(this._oldControlPoint.clone());
            line.setDestControlPoint(this._oldControlPoint.clone());
            line.setIsDestControlPointCustom(this._wasCustom);
          }
          break;
      }
      this._line.getLine().updateLine(this._point);
      if (this._line.isOnFocus()) {
        this._ctrlPointControler.setLine(line);
        line._refreshShape();
      }
    },
  },
);

export default MoveControlPointCommand;