protected virtual void CheckPaletteState(ViewContext context)
{
// Default to using this element calculated state
PaletteState buttonState = State;
// If the actual control is not enabled, force to disabled state
if (!IsFixed && !context.Control.Enabled)
buttonState = PaletteState.Disabled;
// Apply the checked state if not fixed
if (!IsFixed && Checked)
{
// Is the checked button allowed to become unchecked
if (AllowUncheck)
{
// Show feedback on tracking and presssed
switch (buttonState)
{
case PaletteState.Normal:
buttonState = PaletteState.CheckedNormal;
break;
case PaletteState.Tracking:
buttonState = PaletteState.CheckedTracking;
break;
case PaletteState.Pressed:
buttonState = PaletteState.CheckedPressed;
break;
}
}
else
{
// Always use the normal state as user cannot uncheck the button
buttonState = PaletteState.CheckedNormal;
}
}
// If the child elements are not in correct state
if (_forcePaletteUpdate || (_drawCanvas.ElementState != buttonState))
{
// No longer need to force the palettes to be updated
_forcePaletteUpdate = false;
// Switch the child elements over to correct state
_drawCanvas.ElementState = buttonState;
_drawContent.ElementState = buttonState;
_drawSplitBorder.ElementState = buttonState;
_drawDropDownButton.ElementState = buttonState;
// Push the correct palettes into them
switch (buttonState)
{
case PaletteState.Disabled:
_paletteCurrent = _paletteDisabled;
break;
case PaletteState.Normal:
_paletteCurrent = _paletteNormal;
break;
case PaletteState.CheckedNormal:
_paletteCurrent = _paletteCheckedNormal;
break;
case PaletteState.Pressed:
_paletteCurrent = _palettePressed;
break;
case PaletteState.CheckedPressed:
_paletteCurrent = _paletteCheckedPressed;
break;
case PaletteState.Tracking:
_paletteCurrent = _paletteTracking;
break;
case PaletteState.CheckedTracking:
_paletteCurrent = _paletteCheckedTracking;
break;
default:
// Should never happen!
Debug.Assert(false);
break;
}
// Update with the correct palettes
_drawCanvas.SetPalettes(_paletteCurrent.PaletteBack, _paletteCurrent.PaletteBorder);
_drawContent.SetPalette(_paletteCurrent.PaletteContent);
_edgeRedirect.SetPalette(_paletteCurrent.PaletteBorder);
}
}