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LibGUI: Add TreeView::expand_all_parents_of(ModelIndex)

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This does exactly what it sounds like. :^)
This commit is contained in:
Andreas Kling 2020-09-18 18:38:27 +02:00
parent 76ae47c6ed
commit 3bccd99fe9
2 changed files with 19 additions and 0 deletions
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17
Libraries/LibGUI/TreeView.cpp
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@ -125,6 +125,23 @@ void TreeView::set_open_state_of_all_in_subtree(const ModelIndex& root, bool ope
} }
} }
void TreeView::expand_all_parents_of(const ModelIndex& index)
{
if (!model())
return;
auto current = index;
while (current.is_valid()) {
ensure_metadata_for_index(current).open = true;
if (on_toggle)
on_toggle(current, true);
current = current.parent();
}
update_column_sizes();
update_content_size();
update();
}
void TreeView::expand_tree(const ModelIndex& root) void TreeView::expand_tree(const ModelIndex& root)
{ {
if (!model()) if (!model())

2
Libraries/LibGUI/TreeView.h
View file

@ -44,6 +44,8 @@ public:
void expand_tree(const ModelIndex& root = {}); void expand_tree(const ModelIndex& root = {});
void collapse_tree(const ModelIndex& root = {}); void collapse_tree(const ModelIndex& root = {});
void expand_all_parents_of(const ModelIndex&);
Function<void(const ModelIndex&, const bool)> on_toggle; Function<void(const ModelIndex&, const bool)> on_toggle;
protected: protected: