wisemapping-frontend/packages/mindplot/lib/components/CentralTopic.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 Core = require('@wismapping/core-js');

const core = Core();
const Topic = require('./Topic').default;
const Shape = require('./util/Shape').default;

const CentralTopic = new Class(
  /** @lends CentralTopic */ {
    Extends: Topic,
    /**
         * @extends mindplot.Topic
         * @constructs
         * @param model
         * @param options
         */
    initialize(model, options) {
      this.parent(model, options);
    },

    _registerEvents() {
      this.parent();

      // This disable the drag of the central topic. But solves the problem of deselecting the nodes when the screen is clicked.
      this.addEvent('mousedown', (event) => {
        event.stopPropagation();
      });
    },

    /** */
    workoutIncomingConnectionPoint() {
      return this.getPosition();
    },

    /** */
    setCursor(type) {
      type = type == 'move' ? 'default' : type;
      this.parent(type);
    },

    /** */
    updateTopicShape() {},

    _updatePositionOnChangeSize() {
      // Center main topic ...
      const zeroPoint = new core.Point(0, 0);
      this.setPosition(zeroPoint);
    },

    /** */
    getShrinkConnector() {
      return null;
    },

    /** */
    workoutOutgoingConnectionPoint(targetPosition) {
      $assert(targetPosition, 'targetPoint can not be null');
      const pos = this.getPosition();
      const isAtRight = Shape.isAtRight(targetPosition, pos);
      const size = this.getSize();
      return Shape.calculateRectConnectionPoint(pos, size, !isAtRight);
    },
  },
);

export default CentralTopic;