mcs/class/System.Web.DynamicData/System.Web.DynamicData/DynamicDataManager.cs

   1 //
   2 // DynamicDataManager.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto <atsushi@ximian.com>
   6 //      Marek Habersack <mhabersack@novell.com>
   7 //
   8 // Copyright (C) 2008-2009 Novell Inc. http://novell.com
   9 //
  10
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31 using System;
  32 using System.Collections;
  33 using System.Collections.Generic;
  34 using System.Collections.Specialized;
  35 using System.ComponentModel;
  36 using System.Drawing;
  37 using System.Globalization;
  38 using System.Security.Permissions;
  39 using System.Security.Principal;
  40 using System.Web.Caching;
  41 using System.Web.UI;
  42 using System.Web.UI.WebControls;
  43 using System.Web.DynamicData.ModelProviders;
  44
  45 namespace System.Web.DynamicData
  46 {
  47         [ToolboxBitmap (typeof(DynamicDataManager), "DynamicDataManager.ico")]
  48         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  49         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  50         [NonVisualControl]
  51         [ParseChildren (true)]
  52         [PersistChildren (false)]
  53         public class DynamicDataManager : Control
  54         {
  55                 private class AutoFieldGenerator : IAutoFieldGenerator
  56                 {
  57                         MetaTable table;
  58
  59                         public AutoFieldGenerator (MetaTable table)
  60                         {
  61                                 this.table = table;
  62                         }
  63
  64                         public ICollection GenerateFields (Control ctl)
  65                         {
  66                                 var ret = new List <DynamicField> ();
  67                                 foreach (MetaColumn column in table.Columns) {
  68                                         if (!column.Scaffold)
  69                                                 continue;
  70
  71                                         var field = new DynamicField ();
  72                                         field.DataField = column.Name;
  73                                         ret.Add (field);
  74                                 }
  75
  76                                 return ret;
  77                         }
  78                 }
  79
  80                 public DynamicDataManager ()
  81                 {
  82                 }
  83
  84                 public bool AutoLoadForeignKeys {
  85                         get;
  86                         set;
  87                 }
  88
  89                 [Browsable (false)]
  90                 public override bool Visible {
  91                         get { return true; }
  92
  93                         // NOTE: it is supposed to throw the exception
  94                         set { throw new NotImplementedException (); }
  95                 }
  96
  97                 protected override void OnLoad (EventArgs e)
  98                 {
  99                         base.OnLoad (e);
 100
 101                         // Why override?
 102                 }
 103
 104                 public void RegisterControl (Control control)
 105                 {
 106                         RegisterControl (control, false);
 107                 }
 108
 109                 public void RegisterControl (Control control, bool setSelectionFromUrl)
 110                 {
 111                         // .NET doesn't check for null here, but since I don't like such code, we
 112                         // will do the check and throw the same exception as .NET
 113                         if (control == null)
 114                                 throw new NullReferenceException ();
 115
 116                         if (!ControlIsValid (control))
 117                                 throw new Exception ("Controls of type " + control.GetType () + " are not supported.");
 118
 119                         DataBoundControl dbc = control as DataBoundControl;
 120                         if (dbc != null) {
 121                                 IDynamicDataSource dds = dbc.InternalGetDataSource () as IDynamicDataSource;
 122                                 if (dds == null)
 123                                         return;
 124
 125                                 MetaTable table = dds.GetTable ();
 126                                 if (table == null)
 127                                         return;
 128
 129                                 GridView gv = control as GridView;
 130                                 if (gv != null) {
 131                                         gv.ColumnsGenerator = new AutoFieldGenerator (table);
 132                                         return;
 133                                 }
 134                         }
 135                 }
 136
 137                 bool ControlIsValid (Control control)
 138                 {
 139                         if (control is Repeater) {
 140                                 if (control.NamingContainer == null)
 141                                         throw new HttpException ("The Repeater control '" + control.ID + "' does not have a naming container.");
 142                                 return true;
 143                         }
 144
 145                         DataBoundControl dbc = control as DataBoundControl;
 146                         if (dbc == null)
 147                                 return false;
 148
 149                         return true;
 150                 }
 151         }
 152 }