mono/tests/bug-1147.cs

   1 using System;
   2 using System.Collections.Generic;
   3
   4 namespace Program {
   5     public class AxControlEventArgs<T> : EventArgs where T : WindowlessControl
   6 {
   7         public T Control { get; private set; }
   8
   9         public AxControlEventArgs(T control) {
  10             Control = control;
  11         }
  12     }
  13     public class AxControlEventArgs : AxControlEventArgs<WindowlessControl> {
  14         public AxControlEventArgs(WindowlessControl c) : base(c) { }
  15     }
  16
  17     public class AlignPadLayoutPanel : AlignPadLayoutPanel<WindowlessControl> {
  18 }
  19
  20     public class AlignPadLayoutPanel<T> : WindowlessControl where T :
  21 WindowlessControl {
  22         protected override void OnControlAdded(AxControlEventArgs e) {
  23             e.Control.Resize += Content_Resize; //OK if removed
  24             base.OnControlAdded(e);
  25         }
  26
  27         private void Content_Resize(object sender, EventArgs e) { }
  28     }
  29
  30     public class GroupBox : AlignPadLayoutPanel { } //NOT OK
  31     //public class GroupBox : AlignPadLayoutPanel<WindowlessControl> {} //OK
  32
  33     public class Program {
  34         public static readonly AttachedProperty<string> EDITING_TEXT = new
  35 AttachedProperty<string>(null);
  36
  37         static void Main(string[] args) {
  38             Console.WriteLine("Program 6");
  39
  40             var gr = new GroupBox();
  41
  42             //gr.InsertControl(0, new WindowlessControl()); //OK
  43
  44             /* need this block(A) this to crash */
  45             var item = new WindowlessControl();
  46
  47             new AlignPadLayoutPanel<WindowlessControl>().InsertControl(0,
  48 item); //OK if removed
  49
  50             item.SetAttachedProperty(EDITING_TEXT, "label.Text");
  51             /*end block(A)*/
  52
  53             gr.InsertControl(0, new WindowlessControl()); //NOT OK
  54
  55             var wc = new WindowlessControl();
  56             wc.SetAttachedProperty(EDITING_TEXT, "label.Text");
  57             var str = wc.GetAttachedProperty(EDITING_TEXT);
  58
  59             Console.WriteLine("DONE");
  60         }
  61     }
  62
  63     public class WindowlessControl {
  64         internal readonly Dictionary<object, object> _AttachedProperties = new
  65 Dictionary<object, object>();
  66
  67         public void SetAttachedProperty<T>(AttachedProperty<T> prop, T val) {
  68             Console.WriteLine("SetAttachedProperty 1");
  69             _AttachedProperties[prop] = val;
  70             Console.WriteLine("SetAttachedProperty 2");
  71         }
  72
  73         public T GetAttachedProperty<T>(AttachedProperty<T> prop) {
  74             Console.WriteLine("GET AttachedProperty");
  75             return (T)(_AttachedProperties[prop] ?? prop.DefaultValue);
  76         }
  77
  78         public event EventHandler Resize;
  79
  80         public void InsertControl(int index, WindowlessControl control) {
  81             OnControlAdded(new AxControlEventArgs(control));
  82         }
  83
  84         protected virtual void OnControlAdded(AxControlEventArgs e) { }
  85     }
  86
  87     public struct AttachedProperty<T> {
  88         public T DefaultValue { get; private set; }
  89
  90         public AttachedProperty(T defaultValue) : this() {
  91             DefaultValue = defaultValue;
  92         }
  93     }
  94 }