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Code Issues Activity Actions

LibGUI: Allow basic keyboard navigation in GTableView.

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Pressing Enter will now "activate" the selected index, meaning that
the model gets a call to activate(GModelIndex).
This commit is contained in:
Andreas Kling 2019-03-01 13:48:08 +01:00
parent e1d0a3f226
commit b5dcad932e
3 changed files with 32 additions and 1 deletions
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7
LibGUI/GTableModel.h
View file

@ -47,13 +47,18 @@ public:
virtual ColumnMetadata column_metadata(int) const { return { }; }
virtual GVariant data(int row, int column) const = 0;
virtual void update() = 0;
virtual void activate(const GModelIndex&) { }
bool is_valid(GModelIndex index) const
{
return index.row() >= 0 && index.row() < row_count() && index.column() >= 0 && index.column() < column_count();
}
void set_selected_index(const GModelIndex& index) { m_selected_index = index; }
void set_selected_index(const GModelIndex& index)
{
if (is_valid(index))
m_selected_index = index;
}
GModelIndex selected_index() const { return m_selected_index; }
void register_view(Badge<GTableView>, GTableView&);

23
LibGUI/GTableView.cpp
View file

@ -2,6 +2,7 @@
#include <LibGUI/GTableModel.h>
#include <LibGUI/GScrollBar.h>
#include <SharedGraphics/Painter.h>
#include <Kernel/KeyCode.h>
GTableView::GTableView(GWidget* parent)
: GWidget(parent)
@ -167,3 +168,25 @@ int GTableView::item_count() const
{
return m_model->row_count();
}
void GTableView::keydown_event(GKeyEvent& event)
{
if (!model())
return;
auto& model = *this->model();
if (event.key() == KeyCode::Key_Return) {
model.activate(model.selected_index());
return;
}
if (event.key() == KeyCode::Key_Up) {
model.set_selected_index({ model.selected_index().row() - 1, model.selected_index().column() });
update();
return;
}
if (event.key() == KeyCode::Key_Down) {
model.set_selected_index({ model.selected_index().row() + 1, model.selected_index().column() });
update();
return;
}
return GTableView::keydown_event(event);
}

3
LibGUI/GTableView.h
View file

@ -24,12 +24,15 @@ public:
int content_width() const;
int horizontal_padding() const { return m_horizontal_padding; }
virtual bool accepts_focus() const override { return true; }
private:
virtual void model_notification(const GModelNotification&);
virtual void paint_event(GPaintEvent&) override;
virtual void resize_event(GResizeEvent&) override;
virtual void mousedown_event(GMouseEvent&) override;
virtual void keydown_event(GKeyEvent&) override;
void update_scrollbar_ranges();
int item_count() const;