dwl/window: allow hiding of title when either inactive or empty

include/modules/dwl/window.hpp

@@ -32,6 +32,8 @@ class Window : public AAppIconLabel, public sigc::trackable {
   std::string appid_;
   std::string layout_symbol_;
   bool active_;
+  bool hide_inactive_;
+  bool hide_empty_;
   uint32_t layout_;
 
   struct zdwl_ipc_output_v2 *output_status_;

man/waybar-dwl-window.5.scd

@@ -17,6 +17,16 @@ Addressed by *dwl/window*
 	default: {title} ++
 	The format, how information should be displayed.
 
+*hide-empty*: ++
+	typeof: bool ++
+	default: false ++
+	Option to hide the module when the content would be empty.
+
+*hide-inactive*: ++
+	typeof: bool ++
+	default: false ++
+	Option to hide the module when the window is unfocused.
+
 *rotate*: ++
 	typeof: integer ++
 	Positive value to rotate the text label (in 90 degree increments).

src/modules/dwl/window.cpp

@@ -76,7 +76,15 @@ static const wl_registry_listener registry_listener_impl = {.global = handle_glo
 Window::Window(const std::string &id, const Bar &bar, const Json::Value &config)
     : AAppIconLabel(config, "window", id, "{}", 0, true),
       bar_(bar),
-      active_(false) {
+      active_(false),
+      hide_inactive_(false),
+      hide_empty_(false) {
+  if (config_["hide-inactive"].isBool()) {
+    hide_inactive_ = config["hide-inactive"].asBool();
+  }
+  if (config_["hide-empty"].isBool()) {
+    hide_empty_ = config["hide-empty"].asBool();
+  }
   struct wl_display *display = Client::inst()->wl_display;
   struct wl_registry *registry = wl_display_get_registry(display);
 
@@ -122,10 +130,18 @@ void Window::handle_frame() {
   if (tooltipEnabled()) {
     label_.set_tooltip_text(title_);
   }
+  if (hide_empty_ && title_.empty()) {
+      box_.set_visible(false);
+  } else {
     if (active_) {
       box_.get_style_context()->add_class("active");
+      box_.set_visible(true);
     } else {
       box_.get_style_context()->remove_class("active");
+      if (hide_inactive_) {
+        box_.set_visible(false);
+      }
+    }
   }
 }