mcs/class/System.Windows.Forms/System.Windows.Forms/FlowLayoutSettings.cs

   1 //
   2 // FlowLayoutSettings.cs
   3 //
   4 // Permission is hereby granted, free of charge, to any person obtaining
   5 // a copy of this software and associated documentation files (the
   6 // "Software"), to deal in the Software without restriction, including
   7 // without limitation the rights to use, copy, modify, merge, publish,
   8 // distribute, sublicense, and/or sell copies of the Software, and to
   9 // permit persons to whom the Software is furnished to do so, subject to
  10 // the following conditions:
  11 //
  12 // The above copyright notice and this permission notice shall be
  13 // included in all copies or substantial portions of the Software.
  14 //
  15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  19 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  20 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  21 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  22 //
  23 // Copyright (c) 2006 Jonathan Pobst
  24 //
  25 // Authors:
  26 //      Jonathan Pobst (monkey@jpobst.com)
  27 //
  28
  29 using System.Windows.Forms.Layout;
  30 using System.ComponentModel;
  31 using System.Collections.Generic;
  32
  33 namespace System.Windows.Forms
  34 {
  35         [DefaultProperty ("FlowDirection")]
  36         public class FlowLayoutSettings : LayoutSettings
  37         {
  38                 private FlowDirection flow_direction;
  39                 private bool wrap_contents;
  40                 private LayoutEngine layout_engine;
  41                 private Dictionary<object, bool> flow_breaks;
  42                 private Control owner;
  43
  44                 internal FlowLayoutSettings () : this (null)
  45                 {
  46                 }
  47
  48                 internal FlowLayoutSettings (Control owner)
  49                 {
  50                         flow_breaks = new Dictionary<object, bool> ();
  51                         wrap_contents = true;
  52                         flow_direction = FlowDirection.LeftToRight;
  53                         this.owner = owner;
  54                 }
  55
  56                 #region Public Properties
  57                 [DefaultValue (FlowDirection.LeftToRight)]
  58                 public FlowDirection FlowDirection {
  59                         get { return this.flow_direction; }
  60                         set {
  61                                 if (this.flow_direction != value) {
  62                                         this.flow_direction = value;
  63                                         if (owner != null)
  64                                                 owner.PerformLayout (owner, "FlowDirection");
  65                                 }
  66                         }
  67                 }
  68
  69                 public override LayoutEngine LayoutEngine {
  70                         get {
  71                                 if (this.layout_engine == null)
  72                                         this.layout_engine = new FlowLayout ();
  73
  74                                 return this.layout_engine;
  75                         }
  76                 }
  77
  78                 [DefaultValue (true)]
  79                 public bool WrapContents {
  80                         get { return this.wrap_contents; }
  81                         set {
  82                                 if (this.wrap_contents != value) {
  83                                         this.wrap_contents = value;
  84                                         if (owner != null)
  85                                                 owner.PerformLayout (owner, "WrapContents");
  86                                 }
  87                         }
  88                 }
  89                 #endregion
  90
  91                 #region Public Methods
  92                 public bool GetFlowBreak (Object child)
  93                 {
  94                         bool retval;
  95
  96                         if (flow_breaks.TryGetValue (child, out retval))
  97                                 return retval;
  98
  99                         return false;
 100                 }
 101
 102                 public void SetFlowBreak (Object child, bool value)
 103                 {
 104                         flow_breaks[child] = value;
 105                         if (owner != null)
 106                                 owner.PerformLayout ((Control)child, "FlowBreak");
 107                 }
 108                 #endregion
 109         }
 110 }