Introduction to Composite WPF (CAL, Prism): Part 2

using JamSoft.CALDemo.Modules.ModuleB.Core;
using JamSoft.CALDemo.Modules.PageManager.Core;
using JamSoft.CALDemo.Modules.StatusBar.Core;
using Microsoft.Practices.Composite.Events;
using Microsoft.Practices.Composite.Wpf.Commands;
using Microsoft.Practices.Unity;

namespace JamSoft.CALDemo.Modules.ModuleB
{
    public class ModuleBPresenterModel : IModuleBPresenterModel, IPage
    {
        private readonly IUnityContainer _container;
        private readonly IEventAggregator _eventAggregator;
        private readonly IModuleBView _view;
        private readonly IPageManager _pageManager;

        private readonly DelegateCommand<object> _sendMessageCommand;
        public DelegateCommand<object> SendMessageCommand
        {
            get { return _sendMessageCommand; }
        }

        private string _messageToSend;
        public string MessageToSend
        {
            get { return _messageToSend; }
            set { _messageToSend = value; }
        }

        private bool _isActivePage;

        public ModuleBPresenterModel(IUnityContainer container, 
                                     IEventAggregator eventAggregator, 
                                     IModuleBView view, 
                                     IPageManager pageManger)
        {
            _container = container;
            _eventAggregator = eventAggregator;

            _view = view;
            _view.Model = this;

            _pageManager = pageManger;
            _pageManager.Pages.Add(this);

            _sendMessageCommand = new DelegateCommand<object>(OnSendMessageCommandExecuted);
        }

        public string ID
        {
            get { return "Module B"; }
        }

        public float Position
        {
            get { return 20F; }
        }

        public object View
        {
            get { return _view; }
        }

        public bool IsActivePage
        {
            set { _isActivePage = value; }
        }

        private void OnSendMessageCommandExecuted(object obj)
        {
            _eventAggregator.GetEvent<AppStatusMessageEvent>().Publish(_messageToSend);
        }
    }
}