/// <summary>
/// Checks if a specified keystroke is a shortcut on Yata's Menubar.
/// </summary>
/// <param name="keyData"></param>
/// <returns><c>true</c> if <paramref name="keyData"/> is a shortcut</returns>
internal static bool isShortcut(Keys keyData)
{
ToolStripMenuItem it;
ToolStripItemCollection its = Yata.that._bar.Items;
for (int i = 0; i != its.Count; ++i) // rifle through the top-level Menu its ->
{
if ((it = its[i] as ToolStripMenuItem) != null &&
it.Visible && it.Enabled)
{
// if ((e.KeyData & ~gc.ControlShift) != 0)
// logfile.Log(it.Text);
if (YataStrip.hasShortcut(it, keyData))
{
return(true);
}
}
}
return(false);
}
/// <summary>
/// Overrides the <c>PreviewKeyDown</c> eventhandler. Sets
/// <c>e.IsInputKey</c> <c>true</c> for any shortcut that's found in
/// Yata's menus in order to bypass those operations and allow this
/// <c>YataEditbox</c> to do its text-related stuff. Eg, <c>[Ctrl+a]</c>
/// for select-all (instead of File|SaveAll).
/// </summary>
/// <param name="e"></param>
/// <seealso cref="YataStrip"><c>YataStrip.ProcessCmdKey()</c></seealso>
protected override void OnPreviewKeyDown(PreviewKeyDownEventArgs e)
{
#if Keys
if ((e.KeyData & ~gc.ControlShift) != 0)
{
logfile.Log("YataEditbox.OnPreviewKeyDown() e.KeyData= " + e.KeyData + " e.IsInputKey= " + e.IsInputKey);
logfile.Log(". Parent= " + Parent);
}
#endif
/* switch (e.KeyData)
* {
* // Set 'e.IsInputKey' TRUE to bypass Menu shortcuts
* // (keystrokes that are used by menuitems) as well as
* // ProcessCmdKey(), IsInputKey(), and ProcessDialogKey().
* // Only keystrokes that .net uses in TextBox AND that are also
* // used on the Menus need 'e.IsInputKey' set TRUE.
* //
* // Note that forcing IsInputKey() TRUE will *not* bypass
* // ProcessCmdKey() but will bypass ProcessDialogKey(). And do
* // *not* rely on .net to figure out whether or not a keystroke
* // is or should be an input-key in IsInputKey() anyway ... tests
* // have indicated that it doesn't.
* //
* // but unfortunately I can't find a complete list of keystrokes
* // that .net's TextBox treats as input-keys. Some of them are
* // totally whacko - eg. [Ctrl+Backspace]. So, to be safe, set
* // all Menu shortcuts to 'e.IsInputKey' here ->
* //
* // unfortunately again, setting 'e.IsInputKey' TRUE does *not*
* // consume the keystroke, and it will still be sent to the
* // OnKeyDown() handlers, bubbling up through the
* // containing controls, if the key-events of those controls are
* // set to fire ... note that during the bubbling, OnKeyDown()
* // for this Editbox fires *last* - *after* YataTabs.OnKeyDown()
* // and Yata.OnKeyDown() in that order, only then does
* // YataEditbox.OnKeyDown() execute.
* //
* //
* // Do *not* try to force 'e.IsInputKey' FALSE in OnPreviewKeyDown()
* // because 'IsInputKey' FALSE will be redetermined by .net in
* // its event-chain to be TRUE by the time IsInputKey() fires, if
* // .net determined a key to be a stock-defined input-key ...
* // that is, .net will say that such a key is *not* an input-key
* // here in OnPreviewKeyDown() but will later say that it *is*
* // an input-key in the return from IsInputKey().
* //
* // IsInputKey TRUE makes the KeyDown event(s) fire, bypassing ProcessDialogKey().
* // IsInputKey FALSE executes ProcessDialogKey(), bypassing the KeyDown events <- not necessarily!
* //
* // The order of keyed events is as follows:
* // - OnPreviewKeyDown
* // - ProcessCmdKey (if !e.IsInputKey) - bubbles up through containing controls
* // - IsInputKey (if !e.IsInputKey)
* // - ProcessDialogKey OR OnKeyDown - bubbles up through containing controls, kinda.
* //
* // THIS IS SO F****D. but i think i got it enough to start
* // coding again ...
* //
* //
* // The following keystrokes are used by .net's default TextBox
* // behavior. Keystrokes that are also used outside of the
* // TextBox - eg. in a Menu or in ProcessCmdKey() etc. - need to
* // have 'e.IsInputKey' set TRUE here so that *nothing fires* in
* // Yata other than stuff for this TextBox exclusively ->
* //
* // but note allow [Escape] and [Enter] to bubble up ... through
* // the Process*Key() functs.
* //
* // Note that [Escape] is not actually the ShortcutKeys for
* // Edit|Deselect all ... [Escape] is processed by
* // YataGrid.ProcessCmdKey() iff the editor has focus - note that
* // [Escape] gets treated differently by different Yata-objects.
* //
* // [Enter] is not on the Menu and very likely never will be.
*
*
* case Keys.Control | Keys.X: // Cells|Cut
* case Keys.Control | Keys.C: // Cells|Copy
* case Keys.Control | Keys.V: // Cells|Paste
* case Keys.Delete: // Cells|Delete
*
* // case Keys.Shift | Keys.Delete: // appears to not be hooked by textboxes.
*
* case Keys.Control | Keys.A: // File|SaveAll
*
* case Keys.Control | Keys.Z: // Edit|Undo
* case Keys.Control | Keys.Y: // Edit|Redo
* logfile.Log(". YataEditbox.OnPreviewKeyDown force e.IsInputKey TRUE");
* e.IsInputKey = true;
* break;
* } */
switch (e.KeyData)
{
// no need to check these keys for Menu shortcuts ->
case Keys.Enter: // handled in YataGrid.ProcessCmdKey()
case Keys.Escape: // handled in YataGrid.ProcessCmdKey()
break;
default:
if (YataStrip.isShortcut(e.KeyData))
{
#if Keys
logfile.Log(". YataEditbox.OnPreviewKeyDown force e.IsInputKey TRUE (shortcut)");
#endif
e.IsInputKey = true;
}
break;
}
base.OnPreviewKeyDown(e);
}