wip(systray): Add module base

include/modules/meta/factory.hpp

@@ -15,6 +15,9 @@
 #include "modules/menu.hpp"
 #include "modules/meta/base.hpp"
 #include "modules/script.hpp"
+#if DEBUG
+#include "modules/systray.hpp"
+#endif
 #include "modules/tailscript.hpp"
 #include "modules/temperature.hpp"
 #include "modules/text.hpp"
@@ -75,6 +78,10 @@ namespace {
       return new volume_module(bar, move(module_name));
     } else if (name == "internal/network") {
       return new network_module(bar, move(module_name));
+#if DEBUG
+    } else if (name == "internal/systray") {
+      return new systray_module(bar, move(module_name));
+#endif
     } else if (name == "internal/temperature") {
       return new temperature_module(bar, move(module_name));
     } else if (name == "internal/xbacklight") {

include/modules/systray.hpp

@@ -0,0 +1,40 @@
+#if DEBUG
+#pragma once
+
+#include "modules/meta/static_module.hpp"
+#include "modules/meta/input_handler.hpp"
+
+POLYBAR_NS
+
+class connection;
+
+namespace modules {
+  /**
+   * Module used to display information about the
+   * currently active X window.
+   */
+  class systray_module : public static_module<systray_module>, public input_handler {
+   public:
+    explicit systray_module(const bar_settings&, string);
+
+    void update();
+    bool build(builder* builder, const string& tag) const;
+
+   protected:
+    bool input(string&& cmd);
+
+   private:
+    static constexpr const char* EVENT_TOGGLE{"systray-toggle"};
+
+    static constexpr const char* TAG_LABEL_TOGGLE{"<label-toggle>"};
+    static constexpr const char* TAG_TRAY_CLIENTS{"<tray-clients>"};
+
+    connection& m_connection;
+    label_t m_label;
+
+    bool m_hidden{false};
+  };
+}
+
+POLYBAR_NS_END
+#endif

include/x11/tray_manager.hpp

@@ -25,6 +25,8 @@
 #define TRAY_WM_NAME "Polybar tray window"
 #define TRAY_WM_CLASS "tray\0Polybar"
 
+#define TRAY_PLACEHOLDER "<placeholder-systray>"
+
 POLYBAR_NS
 
 namespace chrono = std::chrono;

src/modules/systray.cpp

@@ -0,0 +1,71 @@
+#if DEBUG
+#include "modules/systray.hpp"
+#include "drawtypes/label.hpp"
+#include "x11/connection.hpp"
+#include "x11/tray_manager.hpp"
+
+#include "modules/meta/base.inl"
+
+POLYBAR_NS
+
+namespace modules {
+  template class module<systray_module>;
+
+  /**
+   * Construct module
+   */
+  systray_module::systray_module(const bar_settings& bar, string name_)
+      : static_module<systray_module>(bar, move(name_)), m_connection(connection::make()) {
+    // Add formats and elements
+    m_formatter->add(DEFAULT_FORMAT, TAG_LABEL_TOGGLE, {TAG_LABEL_TOGGLE, TAG_TRAY_CLIENTS});
+
+    if (m_formatter->has(TAG_LABEL_TOGGLE)) {
+      m_label = load_label(m_conf, name(), TAG_LABEL_TOGGLE);
+    }
+  }
+
+  /**
+   * Update
+   */
+  void systray_module::update() {
+    if (m_label) {
+      m_label->reset_tokens();
+      m_label->replace_token("%title%", "");
+    }
+
+    broadcast();
+  }
+
+  /**
+   * Build output
+   */
+  bool systray_module::build(builder* builder, const string& tag) const {
+    if (tag == TAG_LABEL_TOGGLE) {
+      builder->cmd(mousebtn::LEFT, EVENT_TOGGLE);
+      builder->node(m_label);
+      builder->cmd_close();
+    } else if (tag == TAG_TRAY_CLIENTS && !m_hidden) {
+      builder->append(TRAY_PLACEHOLDER);
+    } else {
+      return false;
+    }
+    return true;
+  }
+
+  /**
+   * Handle input event
+   */
+  bool systray_module::input(string&& cmd) {
+    if (cmd.find(EVENT_TOGGLE) != 0) {
+      return false;
+    }
+
+    m_hidden = !m_hidden;
+    broadcast();
+
+    return true;
+  }
+}
+
+POLYBAR_NS_END
+#endif