From a464a213fa4e16e2b5688e3cc6108405afc24349 Mon Sep 17 00:00:00 2001
From: Robin <robinperris@gmail.com>
Date: Tue, 8 Dec 2015 00:00:52 +0000
Subject: [PATCH] Events for closing and changing text

---
 DarkUI/Docking/DarkDockContent.cs | 54 ++++++++++++++++++++++++++++++-
 1 file changed, 53 insertions(+), 1 deletion(-)

diff --git a/DarkUI/Docking/DarkDockContent.cs b/DarkUI/Docking/DarkDockContent.cs
index 45f0c08..08b85f6 100644
--- a/DarkUI/Docking/DarkDockContent.cs
+++ b/DarkUI/Docking/DarkDockContent.cs
@@ -15,9 +15,45 @@ namespace DarkUI.Docking
         }
     }
 
+    public class DockContentClosingEventArgs : EventArgs
+    {
+        public DarkDockContent Content { get; private set; }
+
+        public bool Cancel { get; set; }
+
+        public DockContentClosingEventArgs(DarkDockContent content)
+        {
+            Content = content;
+        }
+    }
+
+    public class DockTextChangedEventArgs : EventArgs
+    {
+        public DarkDockContent Content { get; private set; }
+
+        public string OldText { get; private set; }
+
+        public string NewText { get; private set; }
+
+        public DockTextChangedEventArgs(DarkDockContent content, string oldText, string newText)
+        {
+            Content = content;
+            OldText = oldText;
+            NewText = newText;
+        }
+    }
+
     [ToolboxItem(false)]
     public class DarkDockContent : UserControl
     {
+        #region Event Region
+
+        public event EventHandler<DockContentClosingEventArgs> Closing;
+        public event EventHandler<DockContentEventArgs> Closed;
+        public event EventHandler<DockTextChangedEventArgs> DockHeaderChanged;
+
+        #endregion
+
         #region Field Region
 
         private string _dockText;
@@ -34,9 +70,14 @@ namespace DarkUI.Docking
             get { return _dockText; }
             set
             {
+                var oldText = _dockText;
+
                 _dockText = value;
+
+                if (DockHeaderChanged != null)
+                    DockHeaderChanged(this, new DockTextChangedEventArgs(this, oldText, _dockText));
+
                 Invalidate();
-                // TODO: raise event for re-sizing parent tabs
             }
         }
 
@@ -82,8 +123,19 @@ namespace DarkUI.Docking
 
         public virtual void Close()
         {
+            var e = new DockContentClosingEventArgs(this);
+
+            if (Closing != null)
+                Closing(this, e);
+
+            if (e.Cancel)
+                return;
+
             if (DockPanel != null)
                 DockPanel.RemoveContent(this);
+
+            if (Closed != null)
+                Closed(this, new DockContentEventArgs(this));
         }
 
         #endregion