mcs/class/Managed.Windows.Forms/System.Windows.Forms/UserControl.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2004-2005 Novell, Inc.
  21 //
  22 // Authors:
  23 //      Peter Bartok    pbartok@novell.com
  24 //
  25
  26 using System;
  27 using System.ComponentModel;
  28 using System.ComponentModel.Design;
  29 using System.Drawing;
  30 using System.Runtime.InteropServices;
  31
  32 namespace System.Windows.Forms {
  33         [DefaultEvent("Load")]
  34         [DesignerCategory("UserControl")]
  35         [Designer("System.Windows.Forms.Design.ControlDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
  36         [Designer("System.Windows.Forms.Design.UserControlDocumentDesigner, " + Consts.AssemblySystem_Design, typeof(IRootDesigner))]
  37 #if NET_2_0
  38         [ClassInterface (ClassInterfaceType.AutoDispatch)]
  39         [ComVisible (true)]
  40 #endif
  41         public class UserControl : ContainerControl {
  42                 #region Public Constructors
  43                 public UserControl() {
  44 #if NET_2_0
  45                         SetStyle (ControlStyles.SupportsTransparentBackColor, true);
  46 #endif
  47                 }
  48                 #endregion      // Public Constructors
  49
  50                 #region Public Instance Properties
  51 #if NET_2_0
  52                 [Browsable (true)]
  53                 [EditorBrowsable (EditorBrowsableState.Always)]
  54                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Visible)]
  55                 public override bool AutoSize {
  56                         get { return base.AutoSize; }
  57                         set { base.AutoSize = value; }
  58                 }
  59
  60                 [Browsable (true)]
  61                 [LocalizableAttribute(true)]
  62                 [DefaultValue (AutoSizeMode.GrowOnly)]
  63                 public AutoSizeMode AutoSizeMode {
  64                         get { return base.GetAutoSizeMode (); }
  65                         set {
  66                                 if (base.GetAutoSizeMode () != value) {
  67                                         base.SetAutoSizeMode (value);
  68                                 }
  69                         }
  70                 }
  71 #endif
  72                 protected override Size DefaultSize {
  73                         get {
  74                                 return new Size(150, 150);
  75                         }
  76                 }
  77
  78
  79                 [Bindable(false)]
  80                 [Browsable(false)]
  81                 [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
  82                 [EditorBrowsable(EditorBrowsableState.Never)]
  83                 public override string Text {
  84                         get {
  85                                 return base.Text;
  86                         }
  87
  88                         set {
  89                                 base.Text = value;
  90                         }
  91                 }
  92                 #endregion      // Public Instance Properties
  93
  94                 #region Protected Instance Methods
  95                 [EditorBrowsable(EditorBrowsableState.Advanced)]
  96                 protected override void OnCreateControl() {
  97                         base.OnCreateControl();
  98
  99                         // The OnCreateControl isn't neccessarily raised *before* it
 100                         // becomes first visible, but that's the best we've got
 101                         OnLoad(EventArgs.Empty);
 102                 }
 103
 104                 [EditorBrowsable(EditorBrowsableState.Advanced)]
 105                 protected virtual void OnLoad(EventArgs e) {
 106                         EventHandler eh = (EventHandler)(Events [LoadEvent]);
 107                         if (eh != null)
 108                                 eh (this, e);
 109                 }
 110
 111                 [EditorBrowsable(EditorBrowsableState.Advanced)]
 112                 protected override void OnMouseDown(MouseEventArgs e) {
 113                         base.OnMouseDown(e);
 114                 }
 115
 116                 [EditorBrowsable(EditorBrowsableState.Advanced)]
 117                 protected override void WndProc(ref Message m) {
 118                         base.WndProc(ref m);
 119                 }
 120                 #endregion      // Protected Instance Methods
 121
 122                 #region Protected Properties
 123 #if NET_2_0
 124                 protected override CreateParams CreateParams {
 125                         get {
 126                                 CreateParams cp = base.CreateParams;
 127                                 cp.Style |= (int)WindowStyles.WS_TABSTOP;
 128                                 cp.ExStyle |= (int)WindowExStyles.WS_EX_CONTROLPARENT;
 129                                 return cp;
 130                         }
 131                 }
 132 #endif
 133                 #endregion
 134                 #region Events
 135                 static object LoadEvent = new object ();
 136
 137 #if NET_2_0
 138                 [Browsable (true)]
 139                 [EditorBrowsable (EditorBrowsableState.Always)]
 140                 public new event EventHandler AutoSizeChanged {
 141                         add { base.AutoSizeChanged += value; }
 142                         remove { base.AutoSizeChanged -= value; }
 143                 }
 144 #endif
 145
 146                 public event EventHandler Load {
 147                         add { Events.AddHandler (LoadEvent, value); }
 148                         remove { Events.RemoveHandler (LoadEvent, value); }
 149                 }
 150
 151                 [Browsable(false)]
 152                 [EditorBrowsable(EditorBrowsableState.Never)]
 153                 public new event EventHandler TextChanged {
 154                         add { base.TextChanged += value; }
 155                         remove { base.TextChanged -= value; }
 156                 }
 157
 158                 #endregion      // Events
 159
 160 #if NET_2_0
 161                 protected override void OnResize (EventArgs e)
 162                 {
 163                         base.OnResize (e);
 164                 }
 165
 166                 [Browsable (true)]
 167                 [DefaultValue (BorderStyle.None)]
 168                 [EditorBrowsable (EditorBrowsableState.Always)]
 169                 public BorderStyle BorderStyle {
 170                         get { return InternalBorderStyle; }
 171                         set { InternalBorderStyle = value; }
 172                 }
 173
 174                 internal override Size GetPreferredSizeCore (Size proposedSize)
 175                 {
 176                         Size retsize = Size.Empty;
 177
 178                         foreach (Control child in Controls) {
 179                                 if (child.Dock == DockStyle.Fill) {
 180                                         if (child.Bounds.Right > retsize.Width)
 181                                                 retsize.Width = child.Bounds.Right;
 182                                 } else if (child.Dock != DockStyle.Top && child.Dock != DockStyle.Bottom && (child.Anchor & AnchorStyles.Right) == 0 && (child.Bounds.Right + child.Margin.Right) > retsize.Width)
 183                                         retsize.Width = child.Bounds.Right + child.Margin.Right;
 184
 185                                 if (child.Dock == DockStyle.Fill) {
 186                                         if (child.Bounds.Bottom > retsize.Height)
 187                                                 retsize.Height = child.Bounds.Bottom;
 188                                 } else if (child.Dock != DockStyle.Left && child.Dock != DockStyle.Right && (child.Anchor & AnchorStyles.Bottom) == 0 && (child.Bounds.Bottom + child.Margin.Bottom) > retsize.Height)
 189                                         retsize.Height = child.Bounds.Bottom + child.Margin.Bottom;
 190                         }
 191
 192                         return retsize;
 193                 }
 194 #endif
 195         }
 196 }