// has selection
// one selected
// all selected
private void OnSelectionChanged(StageView sender, int count)
{
bool hasFocus = currentStage.HasEditFocus();
int instCount = hasFocus ? currentStage.InstanceCount : 0;
bool hasSelection = hasFocus ? count > 0 : false;
if ((selectionCount > 0 && count == 0) ||
(selectionCount == 0 && count > 0) ||
!hasFocus)
{
cutToolStripMenuItem.Enabled = hasSelection;
copyToolStripMenuItem.Enabled = hasSelection;
deleteMenuItem.Enabled = hasSelection;
duplicateMenuItem.Enabled = hasSelection;
selectNoneToolStripMenuItem.Enabled = hasSelection;
flipHorizontalToolStripMenuItem.Enabled = hasSelection;
flipVerticalToolStripMenuItem.Enabled = hasSelection;
rotateLeft15ToolStripMenuItem.Enabled = hasSelection;
rotateRight15ToolStripMenuItem.Enabled = hasSelection;
removeTransformToolStripMenuItem.Enabled = hasSelection;
}
if (hasSelection)
{
breakApartToolStripMenuItem.Enabled = currentStage.CanBreakApart();
}
// isTop/isBottom is a bit expensive, so sanity test first
if (hasSelection && instCount > count)
{
DepthChanged();
}
else
{
toTopToolStripMenuItem.Enabled = false;
toBottomToolStripMenuItem.Enabled = false;
upOneToolStripMenuItem.Enabled = false;
backOneToolStripMenuItem.Enabled = false;
infrontOfToolStripMenuItem.Enabled = false;
behindToolStripMenuItem.Enabled = false;
}
editInPlaceToolStripMenuItem.Enabled = hasFocus && currentStage.CanEditInPlace();
if (hasFocus && selectionCount == instCount)
{
selectAllToolStripMenuItem.Enabled = false;
}
else
{
selectAllToolStripMenuItem.Enabled = true;
}
selectionCount = count;
}
