DotNet 4.8.1 build of DotNetBar

PROMS/DotNetBar Source Code/DotNetBarDesignTime/ComboBoxExDesigner.cs

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+using System;
+using System.Text;
+using System.Windows.Forms.Design;
+using DevComponents.DotNetBar.Controls;
+using System.ComponentModel;
+using System.Collections;
+using System.Windows.Forms;
+using System.ComponentModel.Design;
+using DevComponents.Editors;
+
+namespace DevComponents.DotNetBar.Design
+{
+    /// <summary>
+    /// Represents Windows Forms designer for the ComboBoxEx control.
+    /// </summary>
+    public class ComboBoxExDesigner : ControlDesigner
+    {
+#if FRAMEWORK20
+        public override void InitializeNewComponent(IDictionary defaultValues)
+        {
+            base.InitializeNewComponent(defaultValues);
+            SetDesignTimeDefaults();
+        }
+#else
+		public override void OnSetComponentDefaults()
+		{
+			base.OnSetComponentDefaults();
+			SetDesignTimeDefaults();
+		}
+#endif
+
+        public override void Initialize(IComponent component)
+        {
+            base.Initialize(component);
+            if (component.Site!=null && !component.Site.DesignMode)
+                return;
+
+            // If our component is removed we need to clean-up
+            IComponentChangeService cc = (IComponentChangeService)GetService(typeof(IComponentChangeService));
+            if (cc != null)
+            {
+                cc.ComponentRemoving += new ComponentEventHandler(this.OnComponentRemoved);
+            }
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            IComponentChangeService cc = (IComponentChangeService)GetService(typeof(IComponentChangeService));
+            if (cc != null)
+                cc.ComponentRemoved -= new ComponentEventHandler(this.OnComponentRemoved);
+
+            base.Dispose(disposing);
+        }
+
+        private void SetDesignTimeDefaults()
+        {
+            ComboBoxEx c = this.Control as ComboBoxEx;
+            c.DisplayMember = "Text";
+            c.DrawMode = System.Windows.Forms.DrawMode.OwnerDrawFixed;
+            c.ItemHeight = c.GetFontHeight() + 1;
+            c.Style = eDotNetBarStyle.StyleManagerControlled;
+#if FRAMEWORK20
+            c.FormattingEnabled = true;
+#endif
+
+            PropertyDescriptor d = TypeDescriptor.GetProperties(c)["Text"];
+            if (d != null && d.PropertyType == typeof(string) && !d.IsReadOnly && d.IsBrowsable)
+            {
+                d.SetValue(c, "");
+            }
+        }
+
+#if FRAMEWORK20
+        private DesignerActionListCollection m_ActionLists;
+        public override DesignerActionListCollection ActionLists
+        {
+            get
+            {
+                if (m_ActionLists == null)
+                {
+                    m_ActionLists = new DesignerActionListCollection();
+                    object o = this.GetType().Assembly.CreateInstance("System.Windows.Forms.Design.ListControlBoundActionList", false, System.Reflection.BindingFlags.NonPublic, null, new object[] { this }, null, null);
+                    if(o!=null)
+                        m_ActionLists.Add(o as DesignerActionList);
+                }
+                return m_ActionLists;
+            }
+        }
+#endif
+        public override SelectionRules SelectionRules
+        {
+            get
+            {
+                SelectionRules r = base.SelectionRules;
+                ComboBoxEx c = this.Control as ComboBoxEx; ;
+                PropertyDescriptor d = TypeDescriptor.GetProperties(c)["DropDownStyle"];
+                if (d == null)
+                    return r;
+
+                ComboBoxStyle style = (ComboBoxStyle)d.GetValue(c);
+                if (style != ComboBoxStyle.DropDown && style != ComboBoxStyle.DropDownList)
+                {
+                    return r;
+                }
+                return (r & ~(SelectionRules.BottomSizeable | SelectionRules.TopSizeable));
+            }
+        }
+
+        #if FRAMEWORK20
+        protected override void PreFilterProperties(System.Collections.IDictionary properties)
+        {
+            base.PreFilterProperties(properties);
+
+            properties["FlatStyle"] = TypeDescriptor.CreateProperty(
+                this.GetType(),
+                "FlatStyle",
+                typeof(FlatStyle),
+                new Attribute[] { new BrowsableAttribute(true), new DefaultValueAttribute(FlatStyle.Flat)});
+        }
+        
+
+        [Browsable(true), DefaultValue(FlatStyle.Flat), Description("Gets or sets the combo box flat style")]
+        public FlatStyle FlatStyle
+        {
+            get
+            {
+                ComboBox cb = this.Control as ComboBox;
+                return cb.FlatStyle;
+            }
+            set
+            {
+                ComboBox cb = this.Control as ComboBox;
+                cb.FlatStyle = value;
+            }
+        }
+        #endif
+
+		public override ICollection AssociatedComponents
+		{
+			get
+			{
+				ArrayList al = new ArrayList(base.AssociatedComponents);
+				ComboBoxEx cex = this.Component as ComboBoxEx;
+				foreach(object o in cex.Items)
+				{
+					if (o is ComboItem)
+					{
+						al.Add(o);
+					}
+				}
+				return al;
+			}
+		}
+
+		private void OnComponentRemoved(object sender, ComponentEventArgs e)
+		{
+			if (e.Component == this.Component)
+			{
+				ComboBoxEx cex = this.Component as ComboBoxEx;
+				IDesignerHost dh = GetService(typeof(IDesignerHost)) as IDesignerHost;
+				if (dh == null) return;
+				foreach (object o in cex.Items)
+				{
+					if (o is ComboItem)
+					{
+						ComboItem ci = o as ComboItem;
+						dh.DestroyComponent(ci);
+					}
+				}
+			}
+		}
+    }
+}