/*
 *    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: function (model, options) {
            this.parent(model, options);
        },

        _registerEvents: function () {
            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', function (event) {
                event.stopPropagation();
            });
        },

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

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

        /** */
        updateTopicShape: function () {},

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

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

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

export default CentralTopic;