/*************************************************************************
Ensure the item at the specified index is visible within the list box.
*************************************************************************/
void Listbox::ensureItemIsVisible(const ListboxItem* item)
{
ensureItemIsVisible(getItemIndex(item));
}
/*************************************************************************
Handler for when mouse button is pressed
*************************************************************************/
void Tree::onMouseButtonDown(MouseEventArgs& e)
{
// base class processing
// populateGeometryBuffer();
Window::onMouseButtonDown(e);
if (e.button == LeftButton)
{
//bool modified = false;
Vector2f localPos(CoordConverter::screenToWindow(*this, e.position));
// Point localPos(screenToWindow(e.position));
TreeItem* item = getItemAtPoint(localPos);
if (item != 0)
{
//modified = true;
TreeEventArgs args(this);
args.treeItem = item;
populateGeometryBuffer();
Rectf buttonLocation = item->getButtonLocation();
if ((localPos.d_x >= buttonLocation.left()) && (localPos.d_x <= buttonLocation.right()) &&
(localPos.d_y >= buttonLocation.top()) && (localPos.d_y <= buttonLocation.bottom()))
{
item->toggleIsOpen();
if (item->getIsOpen())
{
TreeItem *lastItemInList = item->getTreeItemFromIndex(item->getItemCount() - 1);
ensureItemIsVisible(lastItemInList);
ensureItemIsVisible(item);
onBranchOpened(args);
}
else
{
onBranchClosed(args);
}
// Update the item screen locations, needed to update the scrollbars.
// populateGeometryBuffer();
// Opened or closed a tree branch, so must update scrollbars.
configureScrollbars();
}
else
{
// clear old selections if no control key is pressed or if multi-select is off
if (!(e.sysKeys & Control) || !d_multiselect)
clearAllSelections_impl();
// select range or item, depending upon keys and last selected item
#if 0 // TODO: fix this
if (((e.sysKeys & Shift) && (d_lastSelected != 0)) && d_multiselect)
selectRange(getItemIndex(item), getItemIndex(d_lastSelected));
else
#endif
item->setSelected(item->isSelected() ^ true);
// update last selected item
d_lastSelected = item->isSelected() ? item : 0;
onSelectionChanged(args);
}
}
else
{
// clear old selections if no control key is pressed or if multi-select is off
if (!(e.sysKeys & Control) || !d_multiselect)
{
if (clearAllSelections_impl())
{
// Changes to the selections were actually made
TreeEventArgs args(this);
args.treeItem = item;
onSelectionChanged(args);
}
}
}
++e.handled;
}
}
