mcs/class/System.Design/System.ComponentModel.Design/MultilineStringEditor.cs

   1 //
   2 // System.ComponentModel.Design.MultilineStringEditor.cs
   3 //
   4 // Author:
   5 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
   6 //
   7 // (C) 2007 Andreas Nahr
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System;
  32 using System.ComponentModel;
  33 using System.Drawing.Design;
  34 using System.Windows.Forms;
  35 using System.Windows.Forms.Design;
  36
  37 namespace System.ComponentModel.Design
  38 {
  39         public sealed class MultilineStringEditor : UITypeEditor
  40         {
  41                 private class EditorControl : TextBox
  42                 {
  43                         public EditorControl ()
  44                         {
  45                                 Multiline = true;
  46                                 AcceptsReturn = true;
  47                                 Height = 135;
  48                                 Width = 280;
  49                                 ScrollBars = ScrollBars.Both;
  50                                 WordWrap = false;
  51                                 BorderStyle = BorderStyle.FixedSingle;
  52                         }
  53                 }
  54
  55                 private IWindowsFormsEditorService editorService;
  56                 private EditorControl control = new EditorControl ();
  57
  58                 public MultilineStringEditor ()
  59                 {
  60                 }
  61
  62                 public override object EditValue (ITypeDescriptorContext context, IServiceProvider provider, object value)
  63                 {
  64                         if (context != null && provider != null)
  65                         {
  66                                 editorService = (IWindowsFormsEditorService)provider.GetService (typeof (IWindowsFormsEditorService));
  67                                 if (editorService != null)
  68                                 {
  69                                         if (value == null)
  70                                                 value = String.Empty;
  71                                         else if (!(value is string))
  72                                                 return value;
  73
  74                                         control.Text = (string)value;
  75                                         editorService.DropDownControl (control);
  76                                         return control.Text;
  77                                 }
  78                         }
  79                         return base.EditValue (context, provider, value);
  80                 }
  81
  82                 public override UITypeEditorEditStyle GetEditStyle (ITypeDescriptorContext context)
  83                 {
  84                         return UITypeEditorEditStyle.DropDown;
  85                 }
  86
  87                 public override bool GetPaintValueSupported (ITypeDescriptorContext context)
  88                 {
  89                         return false;
  90                 }
  91         }
  92 }