RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 04:58:13 +00:00
Code Issues Activity Actions

GTreeView: Support navigating the tree with the up/down keys.

Browse source
This commit is contained in:
Andreas Kling 2019-04-02 03:18:26 +02:00
parent 6673284b06
commit b797458962
2 changed files with 41 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

40
LibGUI/GTreeView.cpp
View file

@ -242,6 +242,7 @@ void GTreeView::did_update_selection()
} }
if (opened_any) if (opened_any)
update_content_size(); update_content_size();
update();
} }
void GTreeView::update_content_size() void GTreeView::update_content_size()
@ -255,3 +256,42 @@ void GTreeView::update_content_size()
}); });
set_content_size({ width, height }); set_content_size({ width, height });
} }
void GTreeView::keydown_event(GKeyEvent& event)
{
if (!model())
return;
auto cursor_index = model()->selected_index();
if (event.key() == KeyCode::Key_Up) {
GModelIndex previous_index;
GModelIndex found_index;
traverse_in_paint_order([&] (const GModelIndex& index, const Rect&, const Rect&, int) {
if (index == cursor_index) {
found_index = previous_index;
return IterationDecision::Abort;
}
previous_index = index;
return IterationDecision::Continue;
});
if (found_index.is_valid()) {
model()->set_selected_index(found_index);
update();
}
return;
}
if (event.key() == KeyCode::Key_Down) {
GModelIndex previous_index;
GModelIndex found_index;
traverse_in_paint_order([&] (const GModelIndex& index, const Rect&, const Rect&, int) {
if (previous_index == cursor_index) {
found_index = index;
return IterationDecision::Abort;
}
previous_index = index;
return IterationDecision::Continue;
});
if (found_index.is_valid())
model()->set_selected_index(found_index);
return;
}
}

1
LibGUI/GTreeView.h
View file

@ -13,6 +13,7 @@ public:
protected: protected:
virtual void paint_event(GPaintEvent&) override; virtual void paint_event(GPaintEvent&) override;
virtual void mousedown_event(GMouseEvent&) override; virtual void mousedown_event(GMouseEvent&) override;
virtual void keydown_event(GKeyEvent&) override;
virtual void did_update_selection() override; virtual void did_update_selection() override;
virtual void did_update_model() override; virtual void did_update_model() override;