mcs/class/Managed.Windows.Forms/System.Windows.Forms/DataGridViewTopLeftHeaderCell.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) 2005 Novell, Inc. (http://www.novell.com)
  21 //
  22 // Author:
  23 //      Pedro Martínez Juliá <pedromj@gmail.com>
  24 //
  25
  26 using System.Drawing;
  27
  28 namespace System.Windows.Forms
  29 {
  30         public class DataGridViewTopLeftHeaderCell : DataGridViewColumnHeaderCell
  31         {
  32                 public DataGridViewTopLeftHeaderCell ()
  33                 {
  34                 }
  35
  36                 public override string ToString ()
  37                 {
  38                         return GetType ().Name;
  39                 }
  40
  41                 protected override AccessibleObject CreateAccessibilityInstance ()
  42                 {
  43                         return new DataGridViewTopLeftHeaderCellAccessibleObject (this);
  44                 }
  45
  46                 protected override Rectangle GetContentBounds (Graphics graphics, DataGridViewCellStyle cellStyle, int rowIndex)
  47                 {
  48                         if (DataGridView == null)
  49                                 return Rectangle.Empty;
  50
  51                         Size s = new Size (36, 13);
  52                         return new Rectangle (2, (DataGridView.ColumnHeadersHeight - s.Height) / 2, s.Width, s.Height);
  53                 }
  54
  55                 protected override Rectangle GetErrorIconBounds (Graphics graphics, DataGridViewCellStyle cellStyle, int rowIndex)
  56                 {
  57                         if (DataGridView == null || string.IsNullOrEmpty (ErrorText))
  58                                 return Rectangle.Empty;
  59
  60                         Size error_icon = new Size (12, 11);
  61                         return new Rectangle (new Point (Size.Width - error_icon.Width - 5, (Size.Height - error_icon.Height) / 2), error_icon);
  62                 }
  63
  64                 protected override Size GetPreferredSize (Graphics graphics, DataGridViewCellStyle cellStyle, int rowIndex, Size constraintSize)
  65                 {
  66                         object o = Value;
  67
  68                         if (o != null) {
  69                                 Size s = DataGridViewCell.MeasureTextSize (graphics, o.ToString (), cellStyle.Font, TextFormatFlags.Default);
  70                                 s.Height = Math.Max (s.Height, 17);
  71                                 s.Width += 29;
  72                                 return s;
  73                         } else
  74                                 return new Size (39, 17);
  75                 }
  76
  77                 protected override void Paint (Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, int rowIndex, DataGridViewElementStates  cellState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts)
  78                 {
  79                         base.Paint (graphics, clipBounds, cellBounds, rowIndex,  cellState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, paintParts);
  80                 }
  81
  82                 protected override void PaintBorder (Graphics graphics, Rectangle clipBounds, Rectangle bounds, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle)
  83                 {
  84                         base.PaintBorder (graphics, clipBounds, bounds, cellStyle, advancedBorderStyle);
  85                 }
  86
  87                 protected class DataGridViewTopLeftHeaderCellAccessibleObject : DataGridViewColumnHeaderCellAccessibleObject
  88                 {
  89                         public DataGridViewTopLeftHeaderCellAccessibleObject (DataGridViewTopLeftHeaderCell owner) : base (owner)
  90                         {
  91                         }
  92
  93                         public override Rectangle Bounds {
  94                                 get { throw new NotImplementedException (); }
  95                         }
  96
  97                         public override string DefaultAction {
  98                                 get {
  99                                         if (Owner.DataGridView != null && Owner.DataGridView.MultiSelect) {
 100                                                 return "Press to Select All";
 101                                         }
 102                                         return string.Empty;
 103                                 }
 104                         }
 105
 106                         public override string Name {
 107                                 get { return base.Name; }
 108                         }
 109
 110                         public override AccessibleStates State {
 111                                 get { return base.State; }
 112                         }
 113
 114                         public override string Value {
 115                                 get { return base.Value; }
 116                         }
 117
 118                         public override void DoDefaultAction ()
 119                         {
 120                                 if (Owner.DataGridView != null)
 121                                         Owner.DataGridView.SelectAll();
 122                         }
 123
 124                         public override AccessibleObject Navigate (AccessibleNavigation navigationDirection)
 125                         {
 126                                 throw new NotImplementedException ();
 127                         }
 128
 129                         public override void Select (AccessibleSelection flags)
 130                         {
 131                                 base.Select (flags);
 132                         }
 133                 }
 134         }
 135 }
 136