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: function (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: function (commandContext) {
            var 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: function (commandContext) {
            var line = this._line;
            var 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;