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

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   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) 2004-2006 Novell, Inc. (http://www.novell.com)
  21 //
  22 // Authors:
  23 //      Peter Bartok    (pbartok@novell.com)
  24 //
  25 //
  26
  27 // NOT COMPLETE
  28
  29 using System.ComponentModel;
  30
  31 namespace System.Windows.Forms {
  32         [ToolboxItemFilter("System.Windows.Forms")]
  33         public abstract class CommonDialog : System.ComponentModel.Component {
  34                 #region DialogForm
  35                 internal class DialogForm : Form {
  36                         #region DialogForm Local Variables
  37                         protected CommonDialog  owner;
  38                         #endregion DialogForm Local Variables
  39
  40                         #region DialogForm Constructors
  41                         internal DialogForm(CommonDialog owner) {
  42                                 this.owner = owner;
  43                                 ControlBox = true;
  44                                 MinimizeBox = false;
  45                                 MaximizeBox = false;
  46                                 ShowInTaskbar = false;
  47                                 FormBorderStyle = FormBorderStyle.Sizable;
  48                         }
  49                         #endregion DialogForm Constructors
  50
  51                         #region Protected Instance Properties
  52                         protected override CreateParams CreateParams {
  53                                 get {
  54                                         CreateParams    cp;
  55
  56                                         cp = base.CreateParams;
  57
  58                                         cp.Style |= (int)(WindowStyles.WS_POPUP | WindowStyles.WS_CAPTION | WindowStyles.WS_SYSMENU);
  59
  60                                         return cp;
  61                                 }
  62                         }
  63                         #endregion      // Protected Instance Properties
  64
  65                         #region Internal Methods
  66                         internal DialogResult RunDialog () {
  67                                 this.StartPosition = FormStartPosition.CenterScreen;
  68
  69                                 owner.InitFormsSize (this);
  70
  71                                 this.ShowDialog ();
  72
  73                                 return this.DialogResult;
  74
  75                         }
  76                         #endregion Internal Methods
  77                 }
  78                 #endregion DialogForm
  79
  80                 #region Local Variables
  81                 internal DialogForm     form;
  82                 #endregion Local Variables
  83
  84                 #region Public Constructors
  85                 public CommonDialog() {
  86                         form = new DialogForm(this);
  87                 }
  88                 #endregion Public Constructors
  89
  90                 #region Internal Methods
  91                 internal virtual void InitFormsSize(Form form) {
  92                         // Override this to set a default size for the form
  93                         form.Width = 200;
  94                         form.Height = 200;
  95                 }
  96                 #endregion Internal Methods
  97
  98                 #region Public Instance Methods
  99                 public abstract void Reset();
 100
 101                 public DialogResult ShowDialog() {
 102                         return ShowDialog(null);
 103                 }
 104
 105                 public DialogResult ShowDialog(IWin32Window ownerWin32) {
 106                         // Prep the dialog
 107                         if (RunDialog(form.Handle)) {
 108                                 // Run
 109                                 form.ShowDialog(ownerWin32);
 110                         }
 111
 112                         return form.DialogResult;
 113                 }
 114                 #endregion      // Public Instance Methods
 115
 116                 #region Protected Instance Methods
 117                 protected virtual IntPtr HookProc(IntPtr hWnd, int msg, IntPtr wparam, IntPtr lparam) {
 118                         return IntPtr.Zero;
 119                 }
 120
 121                 protected virtual void OnHelpRequest(EventArgs e) {
 122                         if (HelpRequest != null) {
 123                                 HelpRequest(this, e);
 124                         }
 125                 }
 126
 127                 protected virtual IntPtr OwnerWndProc(IntPtr hWnd, int msg, IntPtr wparam, IntPtr lparam) {
 128                         return IntPtr.Zero;
 129                 }
 130
 131                 protected abstract bool RunDialog(IntPtr hwndOwner);
 132                 #endregion      // Protected Instance Methods
 133
 134                 #region Events
 135                 public event EventHandler HelpRequest;
 136                 #endregion      // Events
 137         }
 138 }