feat: add navigable context menu to mixins

dzgui/views/mixins/context_mixin.py

@@ -1,6 +1,7 @@
 import logging
-from dzgui.views.trees.tree_base import TreeView
 from dzgui.const.enum import ContextMenu
+from dzgui.util.keys import is_navkey
+from dzgui.views.trees.tree_base import TreeView
 
 import gi
 
@@ -21,7 +22,7 @@ class ContextMixin(TreeView):
         if self.is_selection_empty():
             return
 
-        if event.type is Gdk.EventType.BUTTON_PRESS:
+        if event.type is Gdk.EventType.BUTTON_PRESS and event.button == 3:
             try:
                 pathinfo = self.get_path_at_pos(int(event.x), int(event.y))
                 if pathinfo is None:
@@ -41,6 +42,8 @@ class ContextMixin(TreeView):
 
         group = self.menu
         self.context_menu = Gtk.Menu()
+        self.context_menu.connect("key-press-event", self._on_key)
+
         for row in group.value:
             item = Gtk.MenuItem(label=row.dict["label"])
             item.connect("activate", self._on_menu_click, row)
@@ -63,11 +66,11 @@ class ContextMixin(TreeView):
         Local mods page allows multi selection, so ensure that only focused row
         is selected. Used by ContextMenu.OPEN_WORKSHOP and ContextMenu.DELETE_MOD.
 
-        Mod tree right panel supports multi-delete, but context menu enforces
+        ModTreeView supports multi-delete, but context menu enforces
         single deletion on the focused row.
 
         Debug log page allows multi selection and copy of rows, so special handling
-        is used.
+        is used per below.
         """
         if enum == ContextMenu.COPY_LOG_CLIPBOARD:
             model, records = self.get_selection().get_selected_rows()
@@ -76,3 +79,32 @@ class ContextMixin(TreeView):
         else:
             path = self.get_focused_row_path()
             self.controller.menu_action(enum, path)
+
+    def _on_key(self, menu: Gtk.Menu, event: Gdk.EventKey) -> bool | None:
+       if not is_navkey(event.keyval):
+           return False
+       menu = self.context_menu
+       sel = menu.get_selected_item()
+       children = menu.get_children()
+       for i, child in enumerate(children):
+           if sel is child:
+               ind = i
+               break
+
+       match event.keyval:
+           case Gdk.KEY_j:
+               if ind == len(children) - 1:
+                   return True
+               menu.select_item(children[ind + 1])
+           case Gdk.KEY_k:
+               if ind - 1 < 0:
+                   return True
+               menu.select_item(children[ind - 1])
+           case Gdk.KEY_g:
+               menu.select_item(children[0])
+           case Gdk.KEY_G:
+               ind = len(children) - 1
+               menu.select_item(children[ind])
+           case _:
+               return False
+       return True