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LibGUI: Hold down Alt when clicking TreeView to expand full subtree

Browse source 
On other operating systems, if you hold down Alt when you click to
expand part of a tree, it expands all of the children of the node
you clicked. This commit makes our TreeView act the same way :)
This commit is contained in:
Easton Pillay 2022-11-05 00:26:07 -04:00 • committed by Andreas Kling
parent 7809cc6557
commit 22d54cd446
2 changed files with 28 additions and 0 deletions
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27
Userland/Libraries/LibGUI/TreeView.cpp
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@ -430,6 +430,33 @@ void TreeView::did_update_selection()
activate(index);
}
void TreeView::mousedown_event(MouseEvent& event)
{
if (!model())
return AbstractView::mousedown_event(event);
if (event.button() != MouseButton::Primary)
return AbstractView::mousedown_event(event);
bool is_toggle;
auto index = index_at_event_position(event.position(), is_toggle);
if (index.is_valid() && is_toggle && model()->row_count(index)) {
if (event.alt()) {
if (is_toggled(index)) {
collapse_tree(index);
} else {
expand_tree(index);
}
return;
}
toggle_index(index);
return;
}
AbstractView::mousedown_event(event);
}
void TreeView::keydown_event(KeyEvent& event)
{
if (!model())