Add some color to mode specific mode line info

src/client.cc

@@ -53,7 +53,6 @@ DisplayLine Client::generate_mode_line() const
     DisplayLine status;
     Face info_face = get_face("Information");
     Face status_face = get_face("StatusLine");
-    Face prompt_face = get_face("Prompt");
 
     status.push_back({ context().buffer().display_name(), status_face });
     status.push_back({ " " + to_string((int)pos.line+1) + ":" + to_string((int)col+1) + " ", status_face });
@@ -68,7 +67,8 @@ DisplayLine Client::generate_mode_line() const
     if (context().buffer().flags() & Buffer::Flags::Fifo)
         status.push_back({ "[fifo]", info_face });
     status.push_back({ " ", status_face });
-    status.push_back({  m_input_handler.mode_string(), prompt_face });
+    for (auto& atom : m_input_handler.mode_line())
+        status.push_back(std::move(atom));
     status.push_back({ " - " + context().name() + "@[" + Server::instance().session() + "]", status_face });
 
     return status;

src/input_handler.cc

@@ -30,7 +30,7 @@ public:
     virtual void on_disabled() {}
     Context& context() const { return m_input_handler.context(); }
 
-    virtual String description() const = 0;
+    virtual DisplayLine mode_line() const = 0;
 
     virtual KeymapMode keymap_mode() const = 0;
 
@@ -128,10 +128,15 @@ public:
         m_idle_timer.set_next_date(Clock::now() + idle_timeout);
     }
 
-    String description() const override
+    DisplayLine mode_line() const override
     {
-        return to_string(context().selections().size()) +
-               (m_count != 0 ? " sel; param=" + to_string(m_count) : " sel");
+        AtomList atoms = { { to_string(context().selections().size()) + " sel", Face(Colors::Blue) } };
+        if (m_count != 0)
+        {
+            atoms.push_back({ "; param=", Face(Colors::Yellow) });
+            atoms.push_back({ to_string(m_count), Face(Colors::Green) });
+        }
+        return atoms;
     }
 
     KeymapMode keymap_mode() const override { return KeymapMode::Normal; }
@@ -407,9 +412,9 @@ public:
         }
     }
 
-    String description() const override
+    DisplayLine mode_line() const override
     {
-        return "menu";
+        return { "menu", Face(Colors::Yellow) };
     }
 
     KeymapMode keymap_mode() const override { return KeymapMode::Menu; }
@@ -657,9 +662,9 @@ public:
         }
     }
 
-    String description() const override
+    DisplayLine mode_line() const override
     {
-        return "prompt";
+        return { "prompt", Face(Colors::Yellow) };
     }
 
     KeymapMode keymap_mode() const override { return KeymapMode::Prompt; }
@@ -734,9 +739,9 @@ public:
         m_callback(key, context());
     }
 
-    String description() const override
+    DisplayLine mode_line() const override
     {
-        return "enter key";
+        return { "enter key", Face(Colors::Yellow) };
     }
 
     KeymapMode keymap_mode() const override { return KeymapMode::None; }
@@ -879,9 +884,9 @@ public:
             context().hooks().run_hook("InsertMove", key_to_str(key), context());
     }
 
-    String description() const override
+    DisplayLine mode_line() const override
     {
-        return "insert";
+        return { "insert", Face(Colors::Green) };
     }
 
     KeymapMode keymap_mode() const override { return KeymapMode::Insert; }
@@ -1130,9 +1135,9 @@ void InputHandler::reset_normal_mode()
     change_input_mode(new InputModes::Normal(*this));
 }
 
-String InputHandler::mode_string() const
+DisplayLine InputHandler::mode_line() const
 {
-    return m_mode->description();
+    return m_mode->mode_line();
 }
 
 void InputHandler::clear_mode_trash()

src/input_handler.hh

@@ -31,6 +31,7 @@ using PromptCallback = std::function<void (const String&, PromptEvent, Context&)
 using KeyCallback = std::function<void (Key, Context&)>;
 
 class InputMode;
+class DisplayLine;
 enum class InsertMode : unsigned;
 
 class InputHandler : public SafeCountable
@@ -76,7 +77,7 @@ public:
     Context& context() { return m_context; }
     const Context& context() const { return m_context; }
 
-    String mode_string() const;
+    DisplayLine mode_line() const;
     void clear_mode_trash();
 private:
     Context m_context;