Commit for development environment setup

PROMS/csla20cs-2.1.4-070223/csla20cs/OLDcsla20cs/Csla/Web/CslaDataSource.cs

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+using System;
+using System.Web.UI;
+using System.Web.UI.Design;
+using System.ComponentModel;
+using System.Reflection;
+using Csla.Properties;
+
+namespace Csla.Web
+{
+
+  /// <summary>
+  /// A Web Forms data binding control designed to support
+  /// CSLA .NET business objects as data sources.
+  /// </summary>
+  [Designer(typeof(Csla.Web.Design.CslaDataSourceDesigner))]
+  [DisplayName("CslaDataSource")]
+  [Description("CSLA .NET Data Source Control")]
+  [ToolboxData("<{0}:CslaDataSource runat=\"server\"></{0}:CslaDataSource>")]
+  public class CslaDataSource : DataSourceControl
+  {
+
+    private CslaDataSourceView _defaultView;
+
+    /// <summary>
+    /// Event raised when an object is to be created and
+    /// populated with data.
+    /// </summary>
+    /// <remarks>Handle this event in a page and set
+    /// e.BusinessObject to the populated business object.
+    /// </remarks>
+    public event EventHandler<SelectObjectArgs> SelectObject;
+
+    /// <summary>
+    /// Event raised when an object is to be populated with data
+    /// and inserted.
+    /// </summary>
+    /// <remarks>Handle this event in a page to create an
+    /// instance of the object, load the object with data and
+    /// insert the object into the database.</remarks>
+    public event EventHandler<InsertObjectArgs> InsertObject;
+
+    /// <summary>
+    /// Event raised when an object is to be updated.
+    /// </summary>
+    /// <remarks>Handle this event in a page to update an
+    /// existing instance of an object with new data and then
+    /// save the object into the database.</remarks>
+    public event EventHandler<UpdateObjectArgs> UpdateObject;
+
+    /// <summary>
+    /// Event raised when an object is to be deleted.
+    /// </summary>
+    /// <remarks>Handle this event in a page to delete
+    /// an object from the database.</remarks>
+    public event EventHandler<DeleteObjectArgs> DeleteObject;
+
+    /// <summary>
+    /// Returns the default view for this data control.
+    /// </summary>
+    /// <param name="viewName">Ignored.</param>
+    /// <returns></returns>
+    /// <remarks>This control only contains a "Default" view.</remarks>
+    protected override DataSourceView GetView(string viewName)
+    {
+      if (_defaultView == null)
+        _defaultView = new CslaDataSourceView(this, "Default");
+      return _defaultView;
+    }
+
+    /// <summary>
+    /// Get or set the name of the assembly (no longer used).
+    /// </summary>
+    /// <value>Obsolete - do not use.</value>
+    public string TypeAssemblyName
+    {
+      get { return ((CslaDataSourceView)this.GetView("Default")).TypeAssemblyName; }
+      set { ((CslaDataSourceView)this.GetView("Default")).TypeAssemblyName = value; }
+    }
+
+    /// <summary>
+    /// Get or set the full type name of the business object
+    /// class to be used as a data source.
+    /// </summary>
+    /// <value>Full type name of the business class,
+    /// including assembly name.</value>
+    public string TypeName
+    {
+      get { return ((CslaDataSourceView)this.GetView("Default")).TypeName; }
+      set { ((CslaDataSourceView)this.GetView("Default")).TypeName = value; }
+    }
+
+    /// <summary>
+    /// Get or set a value indicating whether the
+    /// business object data source supports paging.
+    /// </summary>
+    /// <remarks>
+    /// To support paging, the business object
+    /// (collection) must implement 
+    /// <see cref="Csla.Core.IReportTotalRowCount"/>.
+    /// </remarks>
+    public bool TypeSupportsPaging
+    {
+      get { return ((CslaDataSourceView)this.GetView("Default")).TypeSupportsPaging; }
+      set { ((CslaDataSourceView)this.GetView("Default")).TypeSupportsPaging = value; }
+    }
+
+    /// <summary>
+    /// Get or set a value indicating whether the
+    /// business object data source supports sorting.
+    /// </summary>
+    public bool TypeSupportsSorting
+    {
+      get { return ((CslaDataSourceView)this.GetView("Default")).TypeSupportsSorting; }
+      set { ((CslaDataSourceView)this.GetView("Default")).TypeSupportsSorting = value; }
+    }
+
+    private static System.Collections.Generic.Dictionary<string,Type> _typeCache = 
+      new System.Collections.Generic.Dictionary<string,Type>();
+
+    /// <summary>
+    /// Returns a <see cref="Type">Type</see> object based on the
+    /// assembly and type information provided.
+    /// </summary>
+    /// <param name="typeAssemblyName">Optional assembly name.</param>
+    /// <param name="typeName">Full type name of the class,
+    /// including assembly name.</param>
+    /// <remarks></remarks>
+    internal static Type GetType(
+      string typeAssemblyName, string typeName)
+    {
+      Type result = null;
+      if (!string.IsNullOrEmpty(typeAssemblyName))
+      {
+        // explicit assembly name provided
+        result = Type.GetType(string.Format(
+          "{0}, {1}", typeName, typeAssemblyName), true, true);
+      }
+      else if (typeName.IndexOf(",") > 0)
+      {
+        // assembly qualified type name provided
+        result = Type.GetType(typeName, true, true);
+      }
+      else
+      {
+        // no assembly name provided
+        result = _typeCache[typeName];
+        if (result == null)
+          foreach (Assembly asm in AppDomain.CurrentDomain.GetAssemblies())
+          {
+            result = asm.GetType(typeName, false, true);
+            if (result != null)
+            {
+              _typeCache.Add(typeName, result);
+              break;
+            }
+          }
+      }
+
+      if (result == null)
+        throw new TypeLoadException(String.Format(Resources.TypeLoadException, typeName));
+
+      return result;
+    }
+
+    /// <summary>
+    /// Returns a list of views available for this control.
+    /// </summary>
+    /// <remarks>This control only provides the "Default" view.</remarks>
+    protected override System.Collections.ICollection GetViewNames()
+    {
+      return new string[] { "Default" };
+    }
+
+    /// <summary>
+    /// Raises the SelectObject event.
+    /// </summary>
+    internal void OnSelectObject(SelectObjectArgs e)
+    {
+      if (SelectObject != null)
+        SelectObject(this, e);
+    }
+
+    /// <summary>
+    /// Raises the InsertObject event.
+    /// </summary>
+    internal void OnInsertObject(InsertObjectArgs e)
+    {
+      if (InsertObject != null)
+        InsertObject(this, e);
+    }
+
+    /// <summary>
+    /// Raises the UpdateObject event.
+    /// </summary>
+    internal void OnUpdateObject(UpdateObjectArgs e)
+    {
+      if (UpdateObject != null)
+        UpdateObject(this, e);
+    }
+
+    /// <summary>
+    /// Raises the DeleteObject event.
+    /// </summary>
+    internal void OnDeleteObject(DeleteObjectArgs e)
+    {
+      if (DeleteObject != null)
+        DeleteObject(this, e);
+    }
+  }
+}