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LibGUI: Allow FileSystemModel to be rooted one level above "/"

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You can now construct a FileSystemModel with a null String() as the
root path. This will root it one level above "/" which makes the
root directory itself selectable as a child.

This will be useful in some places, e.g the FileManager application.
This commit is contained in:
Andreas Kling
2020-09-16 17:47:34 +02:00
parent a9f7b576a4
commit 4d2782db5a
2 changed files with 21 additions and 2 deletions
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22
Libraries/LibGUI/FileSystemModel.cpp
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@@ -89,7 +89,18 @@ void FileSystemModel::Node::traverse_if_needed()
{
if (!is_directory() || has_traversed)
return;
has_traversed = true;
if (m_parent_of_root) {
auto root = adopt_own(*new Node(m_model));
root->fetch_data("/", true);
root->name = "/";
root->parent = this;
children.append(move(root));
return;
}
total_size = 0;
auto full_path = this->full_path();
@@ -149,7 +160,7 @@ void FileSystemModel::Node::reify_if_needed()
traverse_if_needed();
if (mode != 0)
return;
fetch_data(full_path(), parent == nullptr);
fetch_data(full_path(), parent == nullptr || parent->m_parent_of_root);
}
String FileSystemModel::Node::full_path() const
@@ -290,7 +301,10 @@ void FileSystemModel::update_node_on_selection(const ModelIndex& index, const bo
void FileSystemModel::set_root_path(const StringView& root_path)
{
m_root_path = LexicalPath::canonicalized_path(root_path);
if (root_path.is_null())
m_root_path = {};
else
m_root_path = LexicalPath::canonicalized_path(root_path);
update();
if (m_root->has_error()) {
@@ -304,6 +318,10 @@ void FileSystemModel::set_root_path(const StringView& root_path)
void FileSystemModel::update()
{
m_root = adopt_own(*new Node(*this));
if (m_root_path.is_null())
m_root->m_parent_of_root = true;
m_root->reify_if_needed();
did_update();