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

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   7 // permit persons to whom the Software is furnished to do so, subject to
   8 // the following conditions:
   9 //
  10 // The above copyright notice and this permission notice shall be
  11 // included in all copies or substantial portions of the Software.
  12 //
  13 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  14 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  15 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  16 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  17 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  18 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  19 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  20 //
  21 // Copyright (c) 2004-2005 Novell, Inc.
  22 //
  23 // Authors:
  24 //      Peter Bartok    pbartok@novell.com
  25 //
  26
  27 using System.ComponentModel;
  28 using System.Drawing;
  29 using System.Drawing.Text;
  30 using System.Runtime.InteropServices;
  31
  32 namespace System.Windows.Forms {
  33 #if NET_2_0
  34         [ClassInterface (ClassInterfaceType.AutoDispatch)]
  35         [ComVisible (true)]
  36         [Designer ("System.Windows.Forms.Design.ButtonBaseDesigner, " + Consts.AssemblySystem_Design,
  37                    "System.ComponentModel.Design.IDesigner")]
  38 #endif
  39         public class Button : ButtonBase, IButtonControl {
  40                 #region Local variables
  41                 DialogResult    dialog_result;
  42                 #endregion      // Local variables
  43
  44                 #region Public Constructors
  45                 public Button() {
  46                         dialog_result = DialogResult.None;
  47                         SetStyle(ControlStyles.StandardDoubleClick, false);
  48                 }
  49                 #endregion      // Public Constructors
  50
  51                 #region Internal methods
  52                 internal override void HaveDoubleClick() {
  53                         EventHandler eh = (EventHandler)(Events [DoubleClickEvent]);
  54                         if (eh != null)
  55                                 eh (this, EventArgs.Empty);
  56                 }
  57
  58 #if NET_2_0
  59                 internal override void Draw (PaintEventArgs pevent)
  60                 {
  61                         // System style does not use any of the new 2.0 stuff
  62                         if (this.FlatStyle == FlatStyle.System) {
  63                                 base.Draw (pevent);
  64                                 return;
  65                         }
  66
  67                         // FIXME: This should be called every time something that can affect it
  68                         // is changed, not every paint.  Can only change so many things at a time.
  69
  70                         // Figure out where our text and image should go
  71                         Rectangle text_rectangle;
  72                         Rectangle image_rectangle;
  73
  74                         ThemeEngine.Current.CalculateButtonTextAndImageLayout (this, out text_rectangle, out image_rectangle);
  75
  76                         // Draw our button
  77                         if (this.FlatStyle == FlatStyle.Standard)
  78                                 ThemeEngine.Current.DrawButton (pevent.Graphics, this, text_rectangle, image_rectangle, pevent.ClipRectangle);
  79                         else if (this.FlatStyle == FlatStyle.Flat)
  80                                 ThemeEngine.Current.DrawFlatButton (pevent.Graphics, this, text_rectangle, image_rectangle, pevent.ClipRectangle);
  81                         else if (this.FlatStyle == FlatStyle.Popup)
  82                                 ThemeEngine.Current.DrawPopupButton (pevent.Graphics, this, text_rectangle, image_rectangle, pevent.ClipRectangle);
  83                 }
  84 #endif
  85                 #endregion      // Internal methods
  86
  87                 #region Public Instance Properties
  88                 [DefaultValue(DialogResult.None)]
  89                 public virtual DialogResult DialogResult {              // IButtonControl
  90                         get {
  91                                 return dialog_result;
  92                         }
  93                         set {
  94                                 dialog_result = value;
  95                         }
  96                 }
  97                 #endregion      // Public Instance Properties
  98
  99                 #region Protected Instance Properties
 100                 protected override CreateParams CreateParams {
 101                         get {
 102                                 return base.CreateParams;
 103                         }
 104                 }
 105                 #endregion      // Protected Instance Properties
 106
 107                 #region Public Instance Methods
 108                 public virtual void NotifyDefault(bool value) { // IButtonControl
 109                         this.IsDefault = value;
 110                 }
 111
 112                 public void PerformClick() {                    // IButtonControl
 113                         if (CanSelect)
 114                                 OnClick(EventArgs.Empty);
 115                 }
 116
 117                 public override string ToString() {
 118                         return base.ToString() + ", Text: " + this.Text;
 119                 }
 120                 #endregion      // Public Instance Methods
 121
 122                 #region Protected Instance Methods
 123                 protected override void OnClick(EventArgs e) {
 124                         if (dialog_result != DialogResult.None) {
 125                                 Form p = FindForm ();
 126
 127                                 if (p != null) {
 128                                         p.DialogResult = dialog_result;
 129                                 }
 130                         }
 131                         base.OnClick(e);
 132                 }
 133
 134                 protected override void OnMouseUp(MouseEventArgs e) {
 135                         base.OnMouseUp (e);
 136                 }
 137
 138                 protected override bool ProcessMnemonic(char charCode) {
 139                         if (this.UseMnemonic && IsMnemonic(charCode, Text) == true) {
 140                                 PerformClick();
 141                                 return true;
 142                         }
 143
 144                         return base.ProcessMnemonic(charCode);
 145                 }
 146
 147                 protected override void WndProc(ref Message m) {
 148                         base.WndProc (ref m);
 149                 }
 150                 #endregion      // Protected Instance Methods
 151
 152                 #region Events
 153                 static object DoubleClickEvent = new object ();
 154
 155                 // XXX this and HaveDoubleClick above need to be
 156                 // looked at.. it's far more likely that this just
 157                 // uses base.DoubleClick, and HaveDoubleClick goes
 158                 // away in favor of calls to OnDoubleClick.
 159                 [Browsable(false)]
 160                 [EditorBrowsable (EditorBrowsableState.Advanced)]
 161                 public new event EventHandler DoubleClick {
 162                         add { Events.AddHandler (DoubleClickEvent, value); }
 163                         remove { Events.RemoveHandler (DoubleClickEvent, value); }
 164                 }
 165
 166 #if NET_2_0
 167                 public new event MouseEventHandler MouseDoubleClick {
 168                         add { base.MouseDoubleClick += value; }
 169                         remove { base.MouseDoubleClick -= value; }
 170                 }
 171 #endif
 172                 #endregion      // Events
 173
 174 #if NET_2_0
 175                 protected override void OnFontChanged (EventArgs e)
 176                 {
 177                         base.OnFontChanged (e);
 178                 }
 179
 180                 protected override void OnMouseEnter (EventArgs e)
 181                 {
 182                         base.OnMouseEnter (e);
 183                 }
 184
 185                 protected override void OnMouseLeave (EventArgs e)
 186                 {
 187                         base.OnMouseLeave (e);
 188                 }
 189
 190                 protected override void OnTextChanged (EventArgs e)
 191                 {
 192                         base.OnTextChanged (e);
 193                 }
 194 #endif
 195         }
 196 }