/// <summary>
/// Key has been pressed down.
/// </summary>
/// <param name="c">Reference to the source control instance.</param>
/// <param name="e">A KeyEventArgs that contains the event data.</param>
/// <exception cref="ArgumentNullException"></exception>
public virtual void KeyDown(Control c, KeyEventArgs e)
{
Debug.Assert(c != null);
Debug.Assert(e != null);
// Validate incoming references
if (c == null)
{
throw new ArgumentNullException(nameof(c));
}
if (e == null)
{
throw new ArgumentNullException(nameof(e));
}
switch (e.KeyCode)
{
case Keys.Enter:
case Keys.Space:
// Only interested in enabled items
if (_menuRadioButton.ItemEnabled)
{
PressMenuRadioButton(true);
}
break;
case Keys.Tab:
ViewManager.KeyTab(e.Shift);
break;
case Keys.Home:
ViewManager.KeyHome();
break;
case Keys.End:
ViewManager.KeyEnd();
break;
case Keys.Up:
ViewManager.KeyUp();
break;
case Keys.Down:
ViewManager.KeyDown();
break;
case Keys.Left:
ViewManager.KeyLeft(true);
break;
case Keys.Right:
ViewManager.KeyRight();
break;
}
}
/// <summary>
/// Key has been pressed down.
/// </summary>
/// <param name="c">Reference to the source control instance.</param>
/// <param name="e">A KeyEventArgs that contains the event data.</param>
/// <exception cref="ArgumentNullException"></exception>
public virtual void KeyDown(Control c, KeyEventArgs e)
{
Debug.Assert(c != null);
Debug.Assert(e != null);
// Validate incoming references
if (c == null)
{
throw new ArgumentNullException(nameof(c));
}
if (e == null)
{
throw new ArgumentNullException(nameof(e));
}
switch (e.KeyCode)
{
case Keys.Enter:
case Keys.Space:
// Only interested in enabled items
if (_menuItem.ItemEnabled)
{
// Do we press the item or show the sub menu?
if (!_menuItem.HasSubMenu)
{
PressMenuItem();
}
else
{
_menuItem.ShowSubMenu(true);
}
}
break;
case Keys.Tab:
ViewManager.KeyTab(e.Shift);
break;
case Keys.Home:
ViewManager.KeyHome();
break;
case Keys.End:
ViewManager.KeyEnd();
break;
case Keys.Up:
ViewManager.KeyUp();
break;
case Keys.Down:
ViewManager.KeyDown();
break;
case Keys.Left:
// We wrap if are the first context menu shown, rather than a sub menu showing
if (ViewManager.KeyLeft(!_menuItem.HasParentMenu))
{
// User tried to fall off the left edge, so dismiss ourself and let the
// keyboard access take us back to the owning context menu instance
_menuItem.DisposeContextMenu();
}
break;
case Keys.Right:
// If enabled and with a sub menu, then show the sub menu
if (_menuItem.ItemEnabled && _menuItem.HasSubMenu)
{
_menuItem.ShowSubMenu(true);
}
else
{
ViewManager.KeyRight();
}
break;
}
}
/// <summary>
/// Key has been pressed down.
/// </summary>
/// <param name="c">Reference to the source control instance.</param>
/// <param name="e">A KeyEventArgs that contains the event data.</param>
/// <exception cref="ArgumentNullException"></exception>
public virtual void KeyDown(Control c, KeyEventArgs e)
{
Debug.Assert(c != null);
Debug.Assert(e != null);
// Validate incoming references
if (c == null)
{
throw new ArgumentNullException(nameof(c));
}
if (e == null)
{
throw new ArgumentNullException(nameof(e));
}
if (ViewManager != null)
{
switch (e.KeyCode)
{
case Keys.Tab:
ViewManager.KeyTab(e.Shift);
return;
}
}
// Get the current focus date
DateTime focusDate = _months.FocusDay ?? (_monthCalendar?.SelectionStart ?? _months.Calendar.SelectionStart);
DateTime anchorDate = _months.AnchorDay ?? (_monthCalendar?.SelectionStart ?? _months.Calendar.SelectionStart);
// Use keyboard to modify the new focus date
switch (e.KeyCode)
{
case Keys.Left:
focusDate = e.Control ? focusDate.AddMonths(-1) : focusDate.AddDays(-1);
break;
case Keys.Right:
focusDate = e.Control ? focusDate.AddMonths(1) : focusDate.AddDays(1);
break;
case Keys.Up:
focusDate = focusDate.AddDays(-7);
break;
case Keys.Down:
focusDate = focusDate.AddDays(7);
break;
case Keys.Home:
if (e.Control)
{
focusDate = focusDate.AddMonths(-1);
focusDate = new DateTime(focusDate.Year, focusDate.Month, 1);
}
else
{
focusDate = new DateTime(focusDate.Year, focusDate.Month, 1);
}
break;
case Keys.End:
if (e.Control)
{
focusDate = focusDate.AddMonths(1);
focusDate = new DateTime(focusDate.Year, focusDate.Month, 1);
focusDate = focusDate.AddMonths(1).AddDays(-1);
}
else
{
focusDate = new DateTime(focusDate.Year, focusDate.Month, 1);
focusDate = focusDate.AddMonths(1).AddDays(-1);
}
break;
case Keys.PageUp:
focusDate = e.Control ? focusDate.AddMonths(-1 * _months.Months) : focusDate.AddMonths(-1);
break;
case Keys.PageDown:
focusDate = e.Control ? focusDate.AddMonths(1 * _months.Months) : focusDate.AddMonths(1);
break;
case Keys.Enter:
case Keys.Space:
if ((_monthCalendar != null) && _monthCalendar.AutoClose && (_months.Provider != null))
{
// Is the menu capable of being closed?
if (_months.Provider.ProviderCanCloseMenu)
{
// Ask the original context menu definition, if we can close
CancelEventArgs cea = new CancelEventArgs();
_months.Provider.OnClosing(cea);
if (!cea.Cancel)
{
// Close the menu from display and pass in the item clicked as the reason
_months.Provider.OnClose(new CloseReasonEventArgs(ToolStripDropDownCloseReason.Keyboard));
}
}
}
break;
}
// If the max selection count is 1 then always treat the new selection as the new focus
// day we have just calculated. If the shift key is not pressed then definitely treat as
// a single day selection.
if ((_months.Calendar.MaxSelectionCount == 1) || !e.Shift)
{
_months.AnchorDay = focusDate;
_months.FocusDay = focusDate;
_months.Calendar.SetSelectionRange(focusDate, focusDate);
if (ViewManager != null)
{
_needPaint(this, new NeedLayoutEventArgs(true));
}
}
else
{
DateTime startDate = _months.Calendar.SelectionStart;
DateTime endDate = _months.Calendar.SelectionEnd;
if (focusDate < anchorDate)
{
// Cannot extend selection beyond the max selection count
if ((anchorDate - focusDate).Days >= _months.Calendar.MaxSelectionCount)
{
focusDate = anchorDate.AddDays(-(_months.Calendar.MaxSelectionCount - 1));
}
startDate = focusDate;
endDate = anchorDate;
}
else if (focusDate > anchorDate)
{
// Cannot extend selection beyond the max selection count
if ((focusDate - anchorDate).Days >= _months.Calendar.MaxSelectionCount)
{
focusDate = anchorDate.AddDays(_months.Calendar.MaxSelectionCount - 1);
}
startDate = anchorDate;
endDate = focusDate;
}
_months.AnchorDay = anchorDate;
_months.FocusDay = focusDate;
_months.Calendar.SetSelectionRange(startDate, endDate);
if (ViewManager != null)
{
_needPaint(this, new NeedLayoutEventArgs(true));
}
}
}
