Changeset 11555 for trunk/sources/HeuristicLab.Core.Views/3.3/ItemView.cs

Timestamp:

11/17/14 16:05:14 (10 years ago)

Author:

ascheibe

Message:

#2158 added error handling for view nesting problem

File:

• trunk/sources/HeuristicLab.Core.Views/3.3/ItemView.cs (modified) (3 diffs)

trunk/sources/HeuristicLab.Core.Views/3.3/ItemView.cs

@@ -20 +20 @@
 #endregion
 
+using System;
+using System.Windows.Forms;
 using HeuristicLab.MainForm.WindowsForms;
 
@@ -27 +29 @@
   /// </summary>
   public partial class ItemView : AsynchronousContentView {
+    public const int MaximumNestingLevel = 37;
+
     public new IItem Content {
       get { return (IItem)base.Content; }
@@ -38 +42 @@
       InitializeComponent();
     }
+
+    protected override void OnInitialized(EventArgs e) {
+      base.OnInitialized(e);
+
+      if (CountParentControls() > MaximumNestingLevel) {
+        NestingLevelErrorControl errorControl = new NestingLevelErrorControl();
+        errorControl.Dock = DockStyle.Fill;
+        //capture content, needed because it is set at a later time
+        errorControl.Content = () => Content;
+
+        Controls.Clear();
+        Controls.Add(errorControl);
+      }
+    }
+
+    private int CountParentControls() {
+      int cnt = 0;
+      Control parent = Parent;
+      while (parent != null) {
+        parent = parent.Parent;
+        cnt++;
+      }
+      return cnt;
+    }
   }
 }