/*
 *    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;