Sonarr/UI/Shared/Toolbar/ToolbarLayout.js

'use strict';
define(
    [
        'app',
        'Shared/Toolbar/Radio/RadioButtonCollectionView',
        'Shared/Toolbar/Button/ButtonCollectionView',
        'Shared/Toolbar/ButtonCollection'
    ], function () {
        NzbDrone.Shared.Toolbar.ToolbarLayout = Backbone.Marionette.Layout.extend({
            template: 'Shared/Toolbar/ToolbarLayoutTemplate',

            regions: {
                left_1 : '.x-toolbar-left-1',
                left_2 : '.x-toolbar-left-2',
                right_1: '.x-toolbar-right-1',
                right_2: '.x-toolbar-right-2'
            },

            initialize: function (options) {

                if (!options) {
                    throw 'options needs to be passed';
                }

                if (!options.context) {
                    throw 'context needs to be passed';
                }

                this.left = options.left;
                this.right = options.right;
                this.toolbarContext = options.context;

            },


            onShow: function () {
                if (this.left) {
                    _.each(this.left, this._showToolbarLeft, this);
                }
                if (this.right) {
                    _.each(this.right, this._showToolbarRight, this);
                }
            },

            _showToolbarLeft: function (element, index) {
                this._showToolbar(element, index, 'left');
            },

            _showToolbarRight: function (element, index) {
                this._showToolbar(element, index, 'right');
            },


            _showToolbar: function (buttonGroup, index, position) {

                var groupCollection = new NzbDrone.Shared.Toolbar.ButtonCollection();

                _.each(buttonGroup.items, function (button) {

                    if (buttonGroup.storeState && !button.key) {
                        throw 'must provide key for all buttons when storSstate is enabled';
                    }

                    var model = new NzbDrone.Shared.Toolbar.ButtonModel(button);
                    model.set('menuKey', buttonGroup.menuKey);
                    model.ownerContext = this.toolbarContext;
                    groupCollection.add(model);

                }, this);

                var buttonGroupView;

                switch (buttonGroup.type) {
                    case 'radio':
                    {
                        buttonGroupView = new NzbDrone.Shared.Toolbar.RadioButtonCollectionView({
                                collection: groupCollection,
                                menu      : buttonGroup
                            });
                        break;
                    }
                    default :
                    {
                        buttonGroupView = new NzbDrone.Shared.Toolbar.ButtonCollectionView({
                                collection: groupCollection,
                                menu      : buttonGroup
                            });
                        break;
                    }
                }

                this[position + '_' + (index + 1).toString()].show(buttonGroupView);
            }
        });

        return  NzbDrone.Shared.Toolbar.ToolbarLayout;

    });