/// <summary>
/// Process a dialog key in a manner appropriate for the view.
/// </summary>
/// <param name="keyData">Key data.</param>
/// <returns>True if the key eaten; otherwise false.</returns>
public override bool ProcessDialogKey(Keys keyData)
{
// Find out which modifier keys are being pressed
bool shift = ((keyData & Keys.Shift) == Keys.Shift);
bool control = ((keyData & Keys.Control) == Keys.Control);
// Extract just the key and not modifier keys
Keys keyCode = (keyData & Keys.KeyCode);
// There must be a selected page before any action can occur
if (Navigator.SelectedPage != null)
{
switch (keyCode)
{
case Keys.Up:
case Keys.Down:
case Keys.Left:
case Keys.Right:
// Using a navigation key when the selected button has focus
if (HasFocus && _selectedButton.HasFocus)
{
// Shift focus to the currently selected page
if (Navigator.SelectedPage != null)
{
// Remove focus from the selected button
_selectedButton.HasFocus = false;
// We should have a stack view for the page
if (_pageStackLookup.ContainsKey(Navigator.SelectedPage))
{
// Get the associated view element for the page
ViewDrawNavCheckButtonBase checkButton = _pageStackLookup[Navigator.SelectedPage];
// Focus is in the check button
checkButton.HasFocus = true;
}
// Need to repaint to show the change
Navigator.PerformNeedPaint(true);
return(true);
}
}
break;
case Keys.Space:
case Keys.Enter:
if (HasFocus)
{
// If the mini button does not have focus, give it focus
if (!_selectedButton.HasFocus)
{
// Remove focus from the selected button
_selectedButton.HasFocus = true;
// Shift focus from the currently selected page
if (Navigator.SelectedPage != null)
{
// We should have a stack view for the page
if (_pageStackLookup.ContainsKey(Navigator.SelectedPage))
{
// Get the associated view element for the page
ViewDrawNavCheckButtonBase checkButton = _pageStackLookup[Navigator.SelectedPage];
// Focus is not longer on the check button
checkButton.HasFocus = false;
}
}
// Need to repaint to show the change
Navigator.PerformNeedPaint(true);
return(true);
}
else
{
// Mini button has focus, press the button
_selectedButton.PerformClick();
}
}
break;
}
}
// Let the base class perform additional testing
return(base.ProcessDialogKey(keyData));
}
