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LibGUI: Improve TreeView keyboard navigation

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This commit adds two new behaviour to the key event handler of
the TreeView widget:

Pressing left now jumps to the parent node if the current treenode
is closed or has no children.

Pressing right now jumps to the first children node if the current
treenode is open.
This commit is contained in:
Tibor Nagy
2020-02-21 16:51:36 +01:00
committed by Andreas Kling
parent b6887bd9cd
commit 2eb9620415
1 changed files with 11 additions and 2 deletions
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13
Libraries/LibGUI/TreeView.cpp
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@@ -417,8 +417,13 @@ void TreeView::keydown_event(KeyEvent& event)
if (event.key() == KeyCode::Key_Left) {
if (cursor_index.is_valid() && model()->row_count(cursor_index)) {
auto& metadata = ensure_metadata_for_index(cursor_index);
if (metadata.open)
if (metadata.open) {
open_tree_node(false, metadata);
return;
}
}
if (cursor_index.is_valid() && cursor_index.parent().is_valid()) {
selection().set(cursor_index.parent());
return;
}
}
@@ -426,8 +431,12 @@ void TreeView::keydown_event(KeyEvent& event)
if (event.key() == KeyCode::Key_Right) {
if (cursor_index.is_valid() && model()->row_count(cursor_index)) {
auto& metadata = ensure_metadata_for_index(cursor_index);
if (!metadata.open)
if (!metadata.open) {
open_tree_node(true, metadata);
return;
}
selection().set(model()->index(0, model()->tree_column(), cursor_index));
return;
}
}