Merge pull request #2529 from actionless/hotkeys-popup-dont-show-empty-groups

fix(awful: hotkeys_popup): don't show group label if group itself is empty

.travis.yml

@@ -42,6 +42,7 @@ addons:
       - xvfb
       - zsh
       - x11-apps
+      - vim-nox
       # Need xorg-macros
       - xutils-dev
       # lgi.

lib/awful/hotkeys_popup/widget.lua

@@ -310,26 +310,12 @@ function widget.new(args)
         return margin
     end
 
-
-    function widget_instance:_create_wibox(s, available_groups, show_awesome_keys)
-        s = get_screen(s)
-        local wa = s.workarea
-        local height = (self.height < wa.height) and self.height or
-            (wa.height - self.border_width * 2)
-        local width = (self.width < wa.width) and self.width or
-            (wa.width - self.border_width * 2)
-
-        -- arrange hotkey groups into columns
+    function widget_instance:_create_group_columns(column_layouts, group, keys, s, wibox_height)
         local line_height = beautiful.get_font_height(self.font)
         local group_label_height = line_height + self.group_margin
         -- -1 for possible pagination:
-        local max_height_px = height - group_label_height
-        local column_layouts = {}
-        for _, group in ipairs(available_groups) do
-            local keys = gtable.join(
-                show_awesome_keys and self._cached_awful_keys[group] or nil,
-                self._additional_hotkeys[group]
-            )
+        local max_height_px = wibox_height - group_label_height
+
         local joined_descriptions = ""
         for i, key in ipairs(keys) do
             joined_descriptions = joined_descriptions .. key.description .. (i~=#keys and "\n" or "")
@@ -411,8 +397,28 @@ function widget.new(args)
         end
     end
 
+    function widget_instance:_create_wibox(s, available_groups, show_awesome_keys)
+        s = get_screen(s)
+        local wa = s.workarea
+        local wibox_height = (self.height < wa.height) and self.height or
+            (wa.height - self.border_width * 2)
+        local wibox_width = (self.width < wa.width) and self.width or
+            (wa.width - self.border_width * 2)
+
+        -- arrange hotkey groups into columns
+        local column_layouts = {}
+        for _, group in ipairs(available_groups) do
+            local keys = gtable.join(
+                show_awesome_keys and self._cached_awful_keys[group] or nil,
+                self._additional_hotkeys[group]
+            )
+            if #keys > 0 then
+                self:_create_group_columns(column_layouts, group, keys, s, wibox_height)
+            end
+        end
+
         -- arrange columns into pages
-        local available_width_px = width
+        local available_width_px = wibox_width
         local pages = {}
         local columns = wibox.layout.fixed.horizontal()
         local previous_page_last_layout
@@ -423,7 +429,7 @@ function widget.new(args)
                 )
                 table.insert(pages, columns)
                 columns = wibox.layout.fixed.horizontal()
-                available_width_px = width - item.max_width
+                available_width_px = wibox_width - item.max_width
                 item.layout:insert(
                     1, self:_group_label("PgUp - Prev Page", self.label_bg)
                 )
@@ -452,10 +458,10 @@ function widget.new(args)
             wibox = mywibox,
         }
         mywibox:geometry({
-            x = wa.x + math.floor((wa.width - width - self.border_width*2) / 2),
-            y = wa.y + math.floor((wa.height - height - self.border_width*2) / 2),
-            width = width,
-            height = height,
+            x = wa.x + math.floor((wa.width - wibox_width - self.border_width*2) / 2),
+            y = wa.y + math.floor((wa.height - wibox_height - self.border_width*2) / 2),
+            width = wibox_width,
+            height = wibox_height,
         })
         mywibox:set_widget(pages[1])
 

tests/test-awesomerc.lua

@@ -24,6 +24,8 @@ local function num_pairs(container_table)
   return number_of_items
 end
 
+local test_context = {}
+
 local steps = {
     function(count)
         if count <= 5 then
@@ -239,11 +241,22 @@ local steps = {
         elseif count == 2 then
             assert(num_pairs(cached_wiboxes) > 0)
             assert(num_pairs(cached_wiboxes[s]) == 1)
+
+        elseif (
+            test_context.hotkeys01_count_vim and
+            (count - test_context.hotkeys01_count_vim) == 2
+        ) then
+            -- new wibox instance should be generated for including vim hotkeys:
+            assert(num_pairs(cached_wiboxes[s]) == 2)
         end
 
         local hotkeys_wibox
+        local visible_hotkeys_widget
         for _, widget in pairs(cached_wiboxes[s]) do
             hotkeys_wibox = widget.wibox
+            if hotkeys_wibox.visible then
+                visible_hotkeys_widget = widget
+            end
         end
 
         if count == 2 then
@@ -255,8 +268,39 @@ local steps = {
         elseif count == 3 then
             assert(not hotkeys_wibox.visible)
             root.fake_input("key_release", "Super_L")
+            -- now let's run vim so hotkeys widget will show hotkeys for it:
+            test_context.hotkeys01_clients_before = #client.get()
+            awful.spawn("xterm -e vim")
+
+        elseif not test_context.hotkeys01_count_vim then
+            -- if xterm with vim got already opened:
+            if (
+                    test_context.hotkeys01_clients_before and
+                    test_context.hotkeys01_clients_before < #client.get()
+            ) then
+                -- open hotkeys popup with vim hotkeys:
+                awful.key.execute({modkey}, "s")
+                test_context.hotkeys01_count_vim = count
+            end
+
+        elseif test_context.hotkeys01_count_vim then
+            if (count - test_context.hotkeys01_count_vim) == 1 then
+                assert(visible_hotkeys_widget ~= nil)
+                assert(visible_hotkeys_widget.current_page == 1)
+                -- Should change the page on PgDn:
+                root.fake_input("key_press", "Next")
+            elseif (count - test_context.hotkeys01_count_vim) == 2 then
+                assert(visible_hotkeys_widget ~= nil)
+                assert(visible_hotkeys_widget.current_page == 2)
+                root.fake_input("key_release", "Next")
+                -- Should disappear on anykey
+                root.fake_input("key_press", "Super_L")
+            elseif (count - test_context.hotkeys01_count_vim) == 3 then
+                assert(not visible_hotkeys_widget)
+                root.fake_input("key_release", "Super_L")
                 return true
             end
+        end
     end,
 
 }