LibGUI: Handle cursor keydown events in AbstractView

Move the basic movement keys (up/down/left/right/home/end/pgup/pgdn)
up to AbstractView::keydown_event() and have it call the virtual
move_cursor() which is then implemented by subclasses.

Libraries/LibGUI/AbstractTableView.cpp

@@ -373,11 +373,6 @@ void AbstractTableView::set_row_height(int height)
 
 void AbstractTableView::keydown_event(KeyEvent& event)
 {
-    SelectionUpdate selection_update = SelectionUpdate::Set;
-    if (event.modifiers() == KeyModifier::Mod_Shift) {
-        selection_update = SelectionUpdate::Shift;
-    }
-
     if (is_tab_key_navigation_enabled()) {
         if (event.modifiers() == KeyModifier::Mod_Shift && event.key() == KeyCode::Key_Tab) {
             move_cursor(CursorMovement::Left, SelectionUpdate::Set);
@@ -391,46 +386,6 @@ void AbstractTableView::keydown_event(KeyEvent& event)
         }
     }
 
-    if (event.key() == KeyCode::Key_Left) {
-        move_cursor(CursorMovement::Left, selection_update);
-        event.accept();
-        return;
-    }
-    if (event.key() == KeyCode::Key_Right) {
-        move_cursor(CursorMovement::Right, selection_update);
-        event.accept();
-        return;
-    }
-    if (event.key() == KeyCode::Key_Up) {
-        move_cursor(CursorMovement::Up, selection_update);
-        event.accept();
-        return;
-    }
-    if (event.key() == KeyCode::Key_Down) {
-        move_cursor(CursorMovement::Down, selection_update);
-        event.accept();
-        return;
-    }
-    if (event.key() == KeyCode::Key_Home) {
-        move_cursor(CursorMovement::Home, selection_update);
-        event.accept();
-        return;
-    }
-    if (event.key() == KeyCode::Key_End) {
-        move_cursor(CursorMovement::End, selection_update);
-        event.accept();
-        return;
-    }
-    if (event.key() == KeyCode::Key_PageUp) {
-        move_cursor(CursorMovement::PageUp, selection_update);
-        event.accept();
-        return;
-    }
-    if (event.key() == KeyCode::Key_PageDown) {
-        move_cursor(CursorMovement::PageDown, selection_update);
-        event.accept();
-        return;
-    }
     return AbstractView::keydown_event(event);
 }
 

Libraries/LibGUI/AbstractView.cpp

@@ -443,4 +443,53 @@ void AbstractView::set_edit_triggers(unsigned triggers)
     m_edit_triggers = triggers;
 }
 
+void AbstractView::keydown_event(KeyEvent& event)
+{
+    SelectionUpdate selection_update = SelectionUpdate::Set;
+    if (event.modifiers() == KeyModifier::Mod_Shift) {
+        selection_update = SelectionUpdate::Shift;
+    }
+
+    if (event.key() == KeyCode::Key_Left) {
+        move_cursor(CursorMovement::Left, selection_update);
+        event.accept();
+        return;
+    }
+    if (event.key() == KeyCode::Key_Right) {
+        move_cursor(CursorMovement::Right, selection_update);
+        event.accept();
+        return;
+    }
+    if (event.key() == KeyCode::Key_Up) {
+        move_cursor(CursorMovement::Up, selection_update);
+        event.accept();
+        return;
+    }
+    if (event.key() == KeyCode::Key_Down) {
+        move_cursor(CursorMovement::Down, selection_update);
+        event.accept();
+        return;
+    }
+    if (event.key() == KeyCode::Key_Home) {
+        move_cursor(CursorMovement::Home, selection_update);
+        event.accept();
+        return;
+    }
+    if (event.key() == KeyCode::Key_End) {
+        move_cursor(CursorMovement::End, selection_update);
+        event.accept();
+        return;
+    }
+    if (event.key() == KeyCode::Key_PageUp) {
+        move_cursor(CursorMovement::PageUp, selection_update);
+        event.accept();
+        return;
+    }
+    if (event.key() == KeyCode::Key_PageDown) {
+        move_cursor(CursorMovement::PageDown, selection_update);
+        event.accept();
+        return;
+    }
+}
+
 }

Libraries/LibGUI/AbstractView.h

@@ -121,6 +121,7 @@ protected:
     AbstractView();
     virtual ~AbstractView() override;
 
+    virtual void keydown_event(KeyEvent&) override;
     virtual void mousedown_event(MouseEvent&) override;
     virtual void mousemove_event(MouseEvent&) override;
     virtual void mouseup_event(MouseEvent&) override;

Libraries/LibGUI/ColumnsView.cpp

@@ -320,32 +320,12 @@ void ColumnsView::keydown_event(KeyEvent& event)
     if (!model())
         return;
 
-    SelectionUpdate selection_update = SelectionUpdate::Set;
-
     if (event.key() == KeyCode::Key_Return) {
         activate_selected();
         return;
     }
 
-    if (event.key() == KeyCode::Key_Up) {
-        move_cursor(CursorMovement::Up, selection_update);
-        return;
-    }
-
-    if (event.key() == KeyCode::Key_Down) {
-        move_cursor(CursorMovement::Down, selection_update);
-        return;
-    }
-
-    if (event.key() == KeyCode::Key_Left) {
-        move_cursor(CursorMovement::Left, selection_update);
-        return;
-    }
-
-    if (event.key() == KeyCode::Key_Right) {
-        move_cursor(CursorMovement::Right, selection_update);
-        return;
-    }
+    AbstractView::keydown_event(event);
 }
 
 }

Libraries/LibGUI/IconView.cpp

@@ -602,45 +602,11 @@ void IconView::keydown_event(KeyEvent& event)
     if (!m_visual_row_count || !m_visual_column_count)
         return;
 
-    SelectionUpdate selection_update = SelectionUpdate::Set;
-
     if (event.key() == KeyCode::Key_Return) {
         activate_selected();
         return;
     }
-    if (event.key() == KeyCode::Key_Home) {
-        move_cursor(CursorMovement::Home, selection_update);
-        return;
-    }
-    if (event.key() == KeyCode::Key_End) {
-        move_cursor(CursorMovement::End, selection_update);
-        return;
-    }
-    if (event.key() == KeyCode::Key_Up) {
-        move_cursor(CursorMovement::Up, selection_update);
-        return;
-    }
-    if (event.key() == KeyCode::Key_Down) {
-        move_cursor(CursorMovement::Down, selection_update);
-        return;
-    }
-    if (event.key() == KeyCode::Key_Left) {
-        move_cursor(CursorMovement::Left, selection_update);
-        return;
-    }
-    if (event.key() == KeyCode::Key_Right) {
-        move_cursor(CursorMovement::Right, selection_update);
-        return;
-    }
-    if (event.key() == KeyCode::Key_PageUp) {
-        move_cursor(CursorMovement::PageUp, selection_update);
-        return;
-    }
-    if (event.key() == KeyCode::Key_PageDown) {
-        move_cursor(CursorMovement::PageDown, selection_update);
-        return;
-    }
-    return Widget::keydown_event(event);
+    AbstractView::keydown_event(event);
 }
 
 void IconView::move_cursor(CursorMovement movement, SelectionUpdate selection_update)

Libraries/LibGUI/ListView.cpp

@@ -194,35 +194,17 @@ void ListView::keydown_event(KeyEvent& event)
     if (!model())
         return;
 
-    SelectionUpdate selection_update = SelectionUpdate::Set;
-
     ModelIndex new_index;
     if (event.key() == KeyCode::Key_Return) {
         activate_selected();
         return;
     }
-    if (event.key() == KeyCode::Key_Up) {
-        move_cursor(CursorMovement::Up, selection_update);
-        return;
-    }
-    if (event.key() == KeyCode::Key_Down) {
-        move_cursor(CursorMovement::Down, selection_update);
-        return;
-    }
-    if (event.key() == KeyCode::Key_PageUp) {
-        move_cursor(CursorMovement::PageUp, selection_update);
-        return;
-    }
-    if (event.key() == KeyCode::Key_PageDown) {
-        move_cursor(CursorMovement::PageDown, selection_update);
-        return;
-    }
     if (event.key() == KeyCode::Key_Escape) {
         if (on_escape_pressed)
             on_escape_pressed();
         return;
     }
-    return AbstractView::keydown_event(event);
+    AbstractView::keydown_event(event);
 }
 
 void ListView::move_cursor_relative(int steps, SelectionUpdate selection_update)