Support getting a tree of controls + hooks via lua

src/input/include/input_device.hpp

@@ -11,6 +11,7 @@
 #include <vector>
 
 #include "hal/lv_hal_indev.h"
+#include "input_hook.hpp"
 #include "property.hpp"
 
 namespace input {
@@ -27,13 +28,8 @@ class IInputDevice {
 
   virtual auto read(lv_indev_data_t* data) -> void = 0;
 
-  // TODO: Add hooks and configuration (or are hooks just one kind of
-  // configuration?)
-
-  virtual auto settings()
-      -> std::vector<std::pair<std::string, lua::Property>> {
-    return {};
-  }
+  virtual auto name() -> std::string = 0;
+  virtual auto hooks() -> std::vector<TriggerHooks> { return {}; }
 };
 
 }  // namespace input

src/input/include/input_hook.hpp

@@ -8,35 +8,53 @@
 
 #include <functional>
 #include <optional>
+#include <string>
 
 #include "hal/lv_hal_indev.h"
+#include "lua.hpp"
+
 #include "input_trigger.hpp"
 
 namespace input {
 
-using HookCb = std::optional<std::function<void(lv_indev_data_t*)>>;
+struct HookCallback {
+  std::string name;
+  std::function<void(lv_indev_data_t*)> fn;
+};
 
 class Hook {
  public:
-  Hook(HookCb);
+  Hook(std::string name, std::optional<HookCallback> cb);
 
   auto invoke(lv_indev_data_t*) -> void;
-  auto override(HookCb) -> void;
+  auto override(std::optional<HookCallback>) -> void;
+
+  auto name() const -> const std::string& { return name_; }
+  auto callback() -> std::optional<HookCallback>;
 
  private:
-  HookCb default_;
-  HookCb override_;
+  std::string name_;
+  std::optional<HookCallback> default_;
+  std::optional<HookCallback> override_;
 };
 
 class TriggerHooks {
  public:
-  TriggerHooks(HookCb cb) : TriggerHooks(cb, cb, cb) {}
-  TriggerHooks(HookCb, HookCb, HookCb);
+  TriggerHooks(std::string name, std::optional<HookCallback> cb)
+      : TriggerHooks(name, cb, cb, cb) {}
+  TriggerHooks(std::string name,
+               std::optional<HookCallback> click,
+               std::optional<HookCallback> long_press,
+               std::optional<HookCallback> repeat);
 
   auto update(bool, lv_indev_data_t*) -> void;
-  auto override(Trigger::State, HookCb) -> void;
+  auto override(Trigger::State, std::optional<HookCallback>) -> void;
+
+  auto name() const -> const std::string&;
+  auto pushHooks(lua_State*) -> void;
 
  private:
+  std::string name_;
   Trigger trigger_;
 
   Hook click_;

src/input/include/input_hook_actions.hpp

@@ -7,22 +7,25 @@
 #pragma once
 
 #include "hal/lv_hal_indev.h"
+#include "input_hook.hpp"
 
 namespace input {
 namespace actions {
 
-auto select(lv_indev_data_t*) -> void;
+auto select() -> HookCallback;
 
-auto scrollUp(lv_indev_data_t*) -> void;
-auto scrollDown(lv_indev_data_t*) -> void;
+auto scrollUp() -> HookCallback;
+auto scrollDown() -> HookCallback;
 
-auto scrollToTop(lv_indev_data_t*) -> void;
-auto scrollToBottom(lv_indev_data_t*) -> void;
+auto scrollToTop() -> HookCallback;
+auto scrollToBottom() -> HookCallback;
 
-auto goBack(lv_indev_data_t*) -> void;
+auto goBack() -> HookCallback;
 
-auto volumeUp(lv_indev_data_t*) -> void;
-auto volumeDown(lv_indev_data_t*) -> void;
+auto volumeUp() -> HookCallback;
+auto volumeDown() -> HookCallback;
+
+auto allActions() -> std::vector<HookCallback>;
 
 }  // namespace actions
 }  // namespace input

src/input/include/input_nav_buttons.hpp

@@ -25,6 +25,9 @@ class NavButtons : public IInputDevice {
 
   auto read(lv_indev_data_t* data) -> void override;
 
+  auto name() -> std::string override;
+  auto hooks() -> std::vector<TriggerHooks> override;
+
  private:
   drivers::IGpios& gpios_;
 

src/input/include/input_touch_dpad.hpp

@@ -24,6 +24,9 @@ class TouchDPad : public IInputDevice {
 
   auto read(lv_indev_data_t* data) -> void override;
 
+  auto name() -> std::string override;
+  auto hooks() -> std::vector<TriggerHooks> override;
+
  private:
   drivers::TouchWheel& wheel_;
 

src/input/include/input_touch_wheel.hpp

@@ -27,6 +27,9 @@ class TouchWheel : public IInputDevice {
 
   auto read(lv_indev_data_t* data) -> void override;
 
+  auto name() -> std::string override;
+  auto hooks() -> std::vector<TriggerHooks> override;
+
   auto sensitivity() -> lua::Property&;
 
  private:

src/input/include/input_volume_buttons.hpp

@@ -24,6 +24,9 @@ class VolumeButtons : public IInputDevice {
 
   auto read(lv_indev_data_t* data) -> void override;
 
+  auto name() -> std::string override;
+  auto hooks() -> std::vector<TriggerHooks> override;
+
  private:
   drivers::IGpios& gpios_;
 

src/input/include/lvgl_input_driver.hpp

@@ -41,6 +41,8 @@ class LvglInputDriver {
   auto registration() -> lv_indev_t* { return registration_; }
   auto lock(bool l) -> void { is_locked_ = l; }
 
+  auto pushHooks(lua_State* L) -> int;
+
  private:
   drivers::NvsStorage& nvs_;
   DeviceFactory& factory_;

src/input/input_hook.cpp

@@ -9,25 +9,42 @@
 #include <functional>
 #include <optional>
 #include "hal/lv_hal_indev.h"
+#include "input_trigger.hpp"
+#include "lua.h"
 
 namespace input {
 
-Hook::Hook(HookCb fn) : default_(fn), override_() {}
+Hook::Hook(std::string name, std::optional<HookCallback> cb)
+    : name_(name), default_(cb), override_() {}
 
 auto Hook::invoke(lv_indev_data_t* d) -> void {
-  if (override_) {
-    std::invoke(*override_, d);
-  } else if (default_) {
-    std::invoke(*default_, d);
+  auto cb = callback();
+  if (cb) {
+    std::invoke(cb->fn, d);
   }
 }
 
-auto Hook::override(HookCb fn) -> void {
-  override_ = fn;
+auto Hook::override(std::optional<HookCallback> cb) -> void {
+  override_ = cb;
 }
 
-TriggerHooks::TriggerHooks(HookCb click, HookCb long_press, HookCb repeat)
-    : click_(click), long_press_(long_press), repeat_(repeat) {}
+auto Hook::callback() -> std::optional<HookCallback> {
+  if (override_) {
+    return override_;
+  } else if (default_) {
+    return default_;
+  }
+  return {};
+}
+
+TriggerHooks::TriggerHooks(std::string name,
+                           std::optional<HookCallback> click,
+                           std::optional<HookCallback> long_press,
+                           std::optional<HookCallback> repeat)
+    : name_(name),
+      click_("click", click),
+      long_press_("long_press", long_press),
+      repeat_("repeat", repeat) {}
 
 auto TriggerHooks::update(bool pressed, lv_indev_data_t* d) -> void {
   switch (trigger_.update(pressed)) {
@@ -46,16 +63,17 @@ auto TriggerHooks::update(bool pressed, lv_indev_data_t* d) -> void {
   }
 }
 
-auto TriggerHooks::override(Trigger::State s, HookCb fn) -> void {
+auto TriggerHooks::override(Trigger::State s, std::optional<HookCallback> cb)
+    -> void {
   switch (s) {
     case Trigger::State::kClick:
-      click_.override(fn);
+      click_.override(cb);
       break;
     case Trigger::State::kLongPress:
-      long_press_.override(fn);
+      long_press_.override(cb);
       break;
     case Trigger::State::kRepeatPress:
-      repeat_.override(fn);
+      repeat_.override(cb);
       break;
     case Trigger::State::kNone:
     default:
@@ -63,4 +81,27 @@ auto TriggerHooks::override(Trigger::State s, HookCb fn) -> void {
   }
 }
 
+auto TriggerHooks::name() const -> const std::string& {
+  return name_;
+}
+
+auto TriggerHooks::pushHooks(lua_State* L) -> void {
+  lua_newtable(L);
+
+  auto add_trigger = [&](Hook& h) {
+    lua_pushlstring(L, h.name().data(), h.name().size());
+    auto cb = h.callback();
+    if (cb) {
+      lua_pushlstring(L, cb->name.data(), cb->name.size());
+    } else {
+      lua_pushnil(L);
+    }
+    lua_rawset(L, -3);
+  };
+
+  add_trigger(click_);
+  add_trigger(long_press_);
+  add_trigger(repeat_);
+}
+
 }  // namespace input

src/input/input_hook_actions.cpp

@@ -16,36 +16,57 @@
 namespace input {
 namespace actions {
 
-auto select(lv_indev_data_t* d) -> void {
-  d->state = LV_INDEV_STATE_PRESSED;
+auto select() -> HookCallback {
+  return HookCallback{.name = "select", .fn = [&](lv_indev_data_t* d) {
+                        d->state = LV_INDEV_STATE_PRESSED;
+                      }};
 }
 
-auto scrollUp(lv_indev_data_t* d) -> void {
-  d->enc_diff = -1;
+auto scrollUp() -> HookCallback {
+  return HookCallback{.name = "scroll_up",
+                      .fn = [&](lv_indev_data_t* d) { d->enc_diff = -1; }};
 }
 
-auto scrollDown(lv_indev_data_t* d) -> void {
-  d->enc_diff = 1;
+auto scrollDown() -> HookCallback {
+  return HookCallback{.name = "scroll_down",
+                      .fn = [&](lv_indev_data_t* d) { d->enc_diff = 1; }};
 }
 
-auto scrollToTop(lv_indev_data_t* d) -> void {
-  d->enc_diff = INT16_MIN;
+auto scrollToTop() -> HookCallback {
+  return HookCallback{.name = "scroll_to_top", .fn = [&](lv_indev_data_t* d) {
+                        d->enc_diff = INT16_MIN;
+                      }};
 }
 
-auto scrollToBottom(lv_indev_data_t* d) -> void {
-  d->enc_diff = INT16_MAX;
+auto scrollToBottom() -> HookCallback {
+  return HookCallback{
+      .name = "scroll_to_bottom",
+      .fn = [&](lv_indev_data_t* d) { d->enc_diff = INT16_MAX; }};
 }
 
-auto goBack(lv_indev_data_t* d) -> void {
-  events::Ui().Dispatch(ui::internal::BackPressed{});
+auto goBack() -> HookCallback {
+  return HookCallback{.name = "back", .fn = [&](lv_indev_data_t* d) {
+                        events::Ui().Dispatch(ui::internal::BackPressed{});
+                      }};
 }
 
-auto volumeUp(lv_indev_data_t* d) -> void {
-  events::Audio().Dispatch(audio::StepUpVolume{});
+auto volumeUp() -> HookCallback {
+  return HookCallback{.name = "volume_up", .fn = [&](lv_indev_data_t* d) {
+                        events::Audio().Dispatch(audio::StepUpVolume{});
+                      }};
 }
 
-auto volumeDown(lv_indev_data_t* d) -> void {
-  events::Audio().Dispatch(audio::StepDownVolume{});
+auto volumeDown() -> HookCallback {
+  return HookCallback{.name = "volume_down", .fn = [&](lv_indev_data_t* d) {
+                        events::Audio().Dispatch(audio::StepDownVolume{});
+                      }};
+}
+
+auto allActions() -> std::vector<HookCallback> {
+  return {
+      select(),         scrollUp(), scrollDown(), scrollToTop(),
+      scrollToBottom(), goBack(),   volumeUp(),   volumeDown(),
+  };
 }
 
 }  // namespace actions

src/input/input_nav_buttons.cpp

@@ -15,12 +15,20 @@ namespace input {
 
 NavButtons::NavButtons(drivers::IGpios& gpios)
     : gpios_(gpios),
-      up_(actions::scrollUp, actions::select, {}),
-      down_(actions::scrollDown, actions::select, {}) {}
+      up_("upper", actions::scrollUp(), actions::select(), {}),
+      down_("lower", actions::scrollDown(), actions::select(), {}) {}
 
 auto NavButtons::read(lv_indev_data_t* data) -> void {
   up_.update(!gpios_.Get(drivers::IGpios::Pin::kKeyUp), data);
   down_.update(!gpios_.Get(drivers::IGpios::Pin::kKeyDown), data);
 }
 
+auto NavButtons::name() -> std::string {
+  return "buttons";
+}
+
+auto NavButtons::hooks() -> std::vector<TriggerHooks> {
+  return {up_, down_};
+}
+
 }  // namespace input

src/input/input_touch_dpad.cpp

@@ -21,11 +21,11 @@ namespace input {
 
 TouchDPad::TouchDPad(drivers::TouchWheel& wheel)
     : wheel_(wheel),
-      centre_(actions::select, {}, {}),
-      up_(actions::scrollUp),
-      right_({}, {}, {}),
-      down_(actions::scrollDown),
-      left_(actions::goBack) {}
+      centre_("centre", actions::select(), {}, {}),
+      up_("up", actions::scrollUp()),
+      right_("right", {}, {}, {}),
+      down_("down", actions::scrollDown()),
+      left_("left", actions::goBack()) {}
 
 auto TouchDPad::read(lv_indev_data_t* data) -> void {
   wheel_.Update();
@@ -51,4 +51,12 @@ auto TouchDPad::read(lv_indev_data_t* data) -> void {
       data);
 }
 
+auto TouchDPad::name() -> std::string {
+  return "dpad";
+}
+
+auto TouchDPad::hooks() -> std::vector<TriggerHooks> {
+  return {centre_, up_, right_, down_, left_};
+}
+
 }  // namespace input

src/input/input_touch_wheel.cpp

@@ -39,11 +39,11 @@ TouchWheel::TouchWheel(drivers::NvsStorage& nvs, drivers::TouchWheel& wheel)
                      threshold_ = calculateThreshold(int_val);
                      return true;
                    }),
-      centre_(actions::select, {}, {}),
-      up_({}, actions::scrollToTop, actions::scrollUp),
-      right_({}, {}, {}),
-      down_({}, actions::scrollToBottom, actions::scrollDown),
-      left_({}, actions::goBack, {}),
+      centre_("centre", actions::select(), {}, {}),
+      up_("up", {}, actions::scrollToTop(), actions::scrollUp()),
+      right_("right", {}, {}, {}),
+      down_("down", {}, actions::scrollToBottom(), actions::scrollDown()),
+      left_("left", {}, actions::goBack(), {}),
       is_scrolling_(false),
       threshold_(calculateThreshold(nvs.ScrollSensitivity())),
       is_first_read_(true),
@@ -88,6 +88,14 @@ auto TouchWheel::read(lv_indev_data_t* data) -> void {
                data);
 }
 
+auto TouchWheel::name() -> std::string {
+  return "wheel";
+}
+
+auto TouchWheel::hooks() -> std::vector<TriggerHooks> {
+  return {centre_, up_, right_, down_, left_};
+}
+
 auto TouchWheel::sensitivity() -> lua::Property& {
   return sensitivity_;
 }

src/input/input_volume_buttons.cpp

@@ -12,11 +12,21 @@
 namespace input {
 
 VolumeButtons::VolumeButtons(drivers::IGpios& gpios)
-    : gpios_(gpios), up_(actions::volumeUp), down_(actions::volumeDown) {}
+    : gpios_(gpios),
+      up_("upper", actions::volumeUp()),
+      down_("lower", actions::volumeDown()) {}
 
 auto VolumeButtons::read(lv_indev_data_t* data) -> void {
   up_.update(!gpios_.Get(drivers::IGpios::Pin::kKeyUp), data);
   down_.update(!gpios_.Get(drivers::IGpios::Pin::kKeyDown), data);
 }
 
+auto VolumeButtons::name() -> std::string {
+  return "buttons";
+}
+
+auto VolumeButtons::hooks() -> std::vector<TriggerHooks> {
+  return {up_, down_};
+}
+
 }  // namespace input

src/input/lvgl_input_driver.cpp

@@ -16,6 +16,8 @@
 #include "input_touch_wheel.hpp"
 #include "input_trigger.hpp"
 #include "input_volume_buttons.hpp"
+#include "lauxlib.h"
+#include "lua.h"
 #include "lvgl.h"
 #include "nvs.hpp"
 #include "property.hpp"
@@ -104,4 +106,22 @@ auto LvglInputDriver::feedback(uint8_t event) -> void {
   }
 }
 
+auto LvglInputDriver::pushHooks(lua_State* L) -> int {
+  lua_newtable(L);
+
+  for (auto& dev : inputs_) {
+    lua_pushlstring(L, dev->name().data(), dev->name().size());
+    lua_newtable(L);
+
+    for (auto& hook : dev->hooks()) {
+      lua_pushlstring(L, hook.name().data(), hook.name().size());
+      hook.pushHooks(L);
+      lua_rawset(L, -3);
+    }
+
+    lua_rawset(L, -3);
+  }
+  return 1;
+}
+
 }  // namespace input

src/ui/ui_fsm.cpp

@@ -14,6 +14,7 @@
 #include "db_events.hpp"
 #include "device_factory.hpp"
 #include "display_init.hpp"
+#include "esp_spp_api.h"
 #include "feedback_haptics.hpp"
 #include "freertos/portmacro.h"
 #include "freertos/projdefs.h"
@@ -497,10 +498,13 @@ void Lua::entry() {
                                    {"brightness", &sDisplayBrightness},
                                });
 
-    registry.AddPropertyModule("controls", {
-                                               {"scheme", &sInput->mode()},
-                                               {"lock_switch", &sLockSwitch},
-                                           });
+    registry.AddPropertyModule(
+        "controls",
+        {
+            {"scheme", &sInput->mode()},
+            {"lock_switch", &sLockSwitch},
+            {"hooks", [&](lua_State* L) { return sInput->pushHooks(L); }},
+        });
 
     if (sDeviceFactory->touch_wheel()) {
       registry.AddPropertyModule(