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                         }
  44                         #endregion DialogForm Constructors
  45
  46                         #region Protected Instance Properties
  47                         protected override CreateParams CreateParams {
  48                                 get {
  49                                         CreateParams    cp;
  50
  51                                         ControlBox = true;
  52                                         MinimizeBox = false;
  53                                         MaximizeBox = false;
  54
  55                                         cp = base.CreateParams;
  56
  57                                         cp.Style = (int)(WindowStyles.WS_POPUP | WindowStyles.WS_CAPTION | WindowStyles.WS_SYSMENU | WindowStyles.WS_CLIPCHILDREN | WindowStyles.WS_CLIPSIBLINGS);
  58                                         if (!is_enabled) {
  59                                                 cp.Style |= (int)(WindowStyles.WS_DISABLED);
  60                                         }
  61
  62                                         return cp;
  63                                 }
  64                         }
  65                         #endregion      // Protected Instance Properties
  66
  67                         #region Internal Methods
  68                         internal DialogResult RunDialog () {
  69                                 this.StartPosition = FormStartPosition.CenterScreen;
  70
  71                                 owner.InitFormsSize (this);
  72
  73                                 this.ShowDialog ();
  74
  75                                 return this.DialogResult;
  76
  77                         }
  78                         #endregion Internal Methods
  79                 }
  80                 #endregion DialogForm
  81
  82                 #region Local Variables
  83                 internal DialogForm     form;
  84                 #endregion Local Variables
  85
  86                 #region Public Constructors
  87                 public CommonDialog() {
  88                         form = new DialogForm(this);
  89                 }
  90                 #endregion Public Constructors
  91
  92                 #region Internal Methods
  93                 internal virtual void InitFormsSize(Form form) {
  94                         // Override this to set a default size for the form
  95                         form.Width = 200;
  96                         form.Height = 200;
  97                 }
  98                 #endregion Internal Methods
  99
 100                 #region Public Instance Methods
 101                 public abstract void Reset();
 102
 103                 public DialogResult ShowDialog() {
 104                         return ShowDialog(null);
 105                 }
 106
 107                 public DialogResult ShowDialog(IWin32Window ownerWin32) {
 108                         // Prep the dialog
 109                         RunDialog(form.Handle);
 110
 111                         // Run
 112                         form.ShowDialog(ownerWin32);
 113
 114                         return form.DialogResult;
 115                 }
 116                 #endregion      // Public Instance Methods
 117
 118                 #region Protected Instance Methods
 119                 protected virtual IntPtr HookProc(IntPtr hWnd, int msg, IntPtr wparam, IntPtr lparam) {
 120                         return IntPtr.Zero;
 121                 }
 122
 123                 protected virtual void OnHelpRequest(EventArgs e) {
 124                         if (HelpRequest != null) {
 125                                 HelpRequest(this, e);
 126                         }
 127                 }
 128
 129                 protected virtual IntPtr OwnerWndProc(IntPtr hWnd, int msg, IntPtr wparam, IntPtr lparam) {
 130                         return IntPtr.Zero;
 131                 }
 132
 133                 protected abstract bool RunDialog(IntPtr hwndOwner);
 134                 #endregion      // Protected Instance Methods
 135
 136                 #region Events
 137                 public event EventHandler HelpRequest;
 138                 #endregion      // Events
 139         }
 140 }