/**
 * Copyright (c) 2016, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
 *
 * WSO2 Inc. licenses this file to you under the Apache License,
 * Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.
 */
define(['lodash', 'backbone', './element', './connection-point'], function (_, Backbone, DiagramElement, ConnectionPoint) {

    var Shape = DiagramElement.extend(
    /** @lends Shape.prototype */
    {
        /**
         * @augments Shape
         * @constructs
         * @class Shape represents the model for a Shape in a diagrams.
         */
        initialize: function (attrs, options) {
            DiagramElement.prototype.initialize.call(this, attrs, options);
            var connectionPoints = new Backbone.Collection([], {model: ConnectionPoint, owner: this});
            this.connectionPoints = connectionPoints;
        },

        modelName: "Shape",

        addConnectionPoint: function (cntPoints) {
            if (_.isArray(cntPoints)) {
                cntPoints.forEach(function (cntPoint) {
                    this.addConnectionPoint(cntPoint);
                });
            }
            this.connectionPoints.add(cntPoints);
            this.trigger("connectionPointAdded", cntPoints);
        },

        defaults: {}
    });

    return Shape;
});

