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Building an MVP Framework for .NET. Part 4: Strongly Typed Associations

, 25 Apr 2008 Ms-PL
In this article we continue developing a Model-View-Presenter framework for .NET platform. The new features we are implementing here are strongly typed asscoiations between controllers, views and tasks for higher convenience and type safety.
mvcsharp-0.7.1.zip
MVCSharp
API Docs
CleanUpAll.proj
Examples
ASP.NET MVC Store
ApplicationLogic
Model
NorthwindDataSet.xsc
NorthwindDataSet.xss
Presentation
App_Data
Nwind.mdb
Global.asax
Properties
Tests
Properties
TestApplicationLogic
Tests.csproj.user
Basics
Basics (generics used)
ApplicationLogic
Model
Presentation
Web
Global.asax
Win
Properties
Settings.settings
ApplicationLogic
Model
Presentation
Web
Global.asax
Win
Properties
Settings.settings
SimpleFormsViewsManager
Properties
TestSimpleFormsViewsManager
ApplicationLogic
Presentation
Properties
Settings.settings
TasksInteraction
ApplicationLogic
Model
Presentation
Web
Global.asax
Win
Properties
Settings.settings
WindowsFormsExample
ApplicationLogic
Presentation
Properties
Settings.settings
MVCSharp
MVCSharp.Tests
Core
Configuration
Tasks
Views
Tasks
MVCSharp.Tests.csproj.user
Properties
Webforms
Configuration
Winforms
Configuration
Core
Configuration
Tasks
Views
Tasks
Views
Properties
Webforms
Configuration
Winforms
Configuration
//===========================================
// MVC# Framework | www.MVCSharp.org        |
// ------------------------------------------
// Copyright (C) 2008 www.MVCSharp.org      |
// All rights reserved.                     |
//===========================================

using System;
using System.Text;
using System.Reflection;
using MVCSharp.Core.Configuration.Views;
using MVCSharp.Core.Configuration.Tasks;

namespace MVCSharp.Core.Configuration
{
    #region Documentation
    /// <summary>
    /// Represents configuration data for an MVC# application. It
    /// contains descriptions for all tasks and views (
    /// <see cref="MVCConfiguration.TaskInfos"/> and <see cref="MVCConfiguration.ViewInfosByTask"/>
    /// properties) and other configuration data.
    /// </summary>
    /// <remarks>Every <see cref="MVCSharp.Core.Tasks.TasksManager"/> instance has its
    /// own MVCConfiguration object and starts tasks accordingly
    /// to this configuration.
    /// </remarks>
    #endregion
    public class MVCConfiguration
    {
        private Type viewInfosProviderType;
        private Type taskInfoProviderType;
        private Type viewsManagerType;
        private Assembly viewsAssembly;
        private ViewInfosByTaskCollection viewInfosByTask;
        private ITaskInfoProvider taskInfoProvider;
        private TaskInfoCollection taskInfos;

        #region Documentation
        /// <summary>
        /// Parameterless constructor.
        /// </summary>
        #endregion
        public MVCConfiguration()
        {
            TaskInfos = new TaskInfoCollection();;
            TaskInfos.MVCConfig = this;
        }

        #region Documentation
        /// <summary>
        /// Returns the default MVCConfiguration instance with
        /// <see cref="MVCConfiguration.ViewInfosProviderType"/> set to <see cref="DefaultViewInfosProvider"/>
        /// and <see cref="MVCConfiguration.TaskInfoProviderType"/> set to <see cref="DefaultTaskInfoProvider"/>
        /// and <see cref="MVCConfiguration.ViewsAssembly"/> pointing to the calling assembly.
        /// </summary>
        #endregion
        public static MVCConfiguration GetDefault()
        {
            MVCConfiguration result = new MVCConfiguration();
            result.viewInfosProviderType = typeof(DefaultViewInfosProvider);
            result.taskInfoProviderType = typeof(DefaultTaskInfoProvider);
            result.ViewsAssembly = Assembly.GetCallingAssembly();
            return result;
        }

        #region Documentation
        /// <summary>
        /// Specifies the type of the <see cref="IViewInfosProvider"/> implementation
        /// used to populate view descriptions (
        /// <see cref="MVCConfiguration.ViewInfosByTask"/> property).
        /// </summary>
        #endregion
        public Type ViewInfosProviderType
        {
            get { return viewInfosProviderType; }
            set { viewInfosProviderType = value; }
        }

        #region Documentation
        /// <summary>
        /// Specifies the type of the <see cref="ITaskInfoProvider"/> implementation
        /// used to populate task descriptions (
        /// <see cref="MVCConfiguration.TaskInfos">MVCConfiguration.TaskInfos</see> property).
        /// </summary>
        #endregion
        public Type TaskInfoProviderType
        {
            get { return taskInfoProviderType; }
            set { taskInfoProviderType = value; }
        }

        #region Documentation
        /// <summary>
        /// Specifies a views manager type (<see cref="MVCSharp.Core.Views.IViewsManager"/> implementation)
        /// to be used.
        /// </summary>
        #endregion
        public Type ViewsManagerType
        {
            get { return viewsManagerType; }
            set { viewsManagerType = value; }
        }

        #region Documentation
        /// <summary>
        /// Gets or sets an assembly containing view descriptions. These
        /// descriptions are converted by the <see cref="MVCConfiguration.ViewInfosProviderType"/> class
        /// to <see cref="ViewInfo"/> objects and stored in <see cref="MVCConfiguration.ViewInfosByTask">
        /// MVCConfiguration.ViewInfosByTask</see> collections.</summary>
        #endregion
        public Assembly ViewsAssembly
        {
            get { return viewsAssembly; }
            set { viewsAssembly = value; }
        }

        #region Documentation
        /// <summary>
        /// Gets a set of <see cref="ViewInfoCollection"/> objects for
        /// every task. These objects are produced by an instance of the
        /// <see cref="MVCConfiguration.ViewInfosProviderType">
        /// MVCConfiguration.ViewInfosProviderType</see> type</summary>
        #endregion
        public ViewInfosByTaskCollection ViewInfosByTask
        {
            get
            {
                if (viewInfosByTask == null)
                {
                    IViewInfosProvider viewInfosProvider = CreateHelper.Create(
                                        ViewInfosProviderType) as IViewInfosProvider;
                    viewInfosByTask = viewInfosProvider.GetFromAssembly(ViewsAssembly);
                }
                return viewInfosByTask;
            }
        }

        #region Documentation
        /// <summary>
        /// Gets or sets an associated <see cref="ITaskInfoProvider"/> instance used
        /// to convert task types to <see cref="TaskInfo"/> objects.
        /// </summary>
        #endregion
        public ITaskInfoProvider TaskInfoProvider
        {
            get
            {
                if (taskInfoProvider == null)
                    taskInfoProvider = CreateHelper.Create(TaskInfoProviderType)
                                                            as ITaskInfoProvider;
                return taskInfoProvider;
            }
            set
            {
                taskInfoProvider = value;
            }
        }

        #region Documentation
        /// <summary>
        /// Associates MVCConfiguration to task descriptions.
        /// </summary>
        #endregion
        public TaskInfoCollection TaskInfos
        {
            get { return taskInfos; }
            set { taskInfos = value; }
        }

    }
}

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About the Author

Oleg Zhukov
Team Leader
Russian Federation Russian Federation
Oleg Zhukov, born and living in Russia is Lead Engineer and Project Manager in a company which provides business software solutions. He has graduated from Moscow Institute of Physics and Technology (MIPT) (department of system programming) and has got a M.S. degree in applied physics and mathematics. His research and development work concerns architectural patterns, domain-driven development and systems analysis. Being the adherent of agile methods he applies them extensively in the projects managed by him.

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