Do not provide toggleLEDs

As this is a generic plugin, for keyboards that do not have LEDs, don't tie it
to LEDControl, and don't provide a `toggleLEDs` method. Instead, show an example
how to achieve the same thing from the sketch.

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

README.md

@@ -10,8 +10,8 @@
  [st:experimental]: https://img.shields.io/badge/experimental----black.svg?style=flat&colorA=dfb317&colorB=494e52
 
 Support performing custom actions whenever the host suspends, resumes, or is
-sleeping. By default, the LEDs will be turned off on suspend, and the previous
-LED mode restored on resume.
+sleeping. Additionally, this plugin provides optional support for the keyboard
+to wake the host up from suspend.
 
 ## Using the plugin
 
@@ -41,11 +41,6 @@ The plugin provides the `HostPowerManagement` object, which has the following me
 >
 > Once enabled, it **cannot** be disabled again.
 
-### `.toggleLEDs(event)`
-
-> Turns LEDs off on suspend, restores the previous LED mode on resume. This is
-> called by `hostPowerManagementEventHandler()` by default.
-
 ## Overrideable methods
 
 ### `hostPowerManagementEventHandler(event)`
@@ -58,12 +53,7 @@ The plugin provides the `HostPowerManagement` object, which has the following me
 > cycle while the host is suspended; `kaleidoscope::HostPowerManagement::Resume` is
 > fired once when the host wakes up.
 >
-> The default implementation calls `HostPowerManagement.toggleLEDs`. When overriding the
-> function, the default is lost.
-
-## Dependencies
-
-* [Kaleidoscope-LEDControl](https://github.com/keyboardio/Kaleidoscope-LEDControl)
+> The default implementation is empty.
 
 ## Further reading
 

examples/HostPowerManagement/HostPowerManagement.ino

@@ -17,6 +17,7 @@
  */
 
 #include <Kaleidoscope.h>
+#include <Kaleidoscope-LEDControl.h>
 #include <Kaleidoscope-HostPowerManagement.h>
 
 const Key keymaps[][ROWS][COLS] PROGMEM = {
@@ -41,6 +42,22 @@ const Key keymaps[][ROWS][COLS] PROGMEM = {
 
 };
 
+void hostPowerManagementEventHandler(kaleidoscope::HostPowerManagement::Event event) {
+  switch (event) {
+  case kaleidoscope::HostPowerManagement::Suspend:
+    LEDControl.paused = true;
+    LEDControl.set_all_leds_to({0, 0, 0});
+    LEDControl.syncLeds();
+    break;
+  case kaleidoscope::HostPowerManagement::Resume:
+    LEDControl.paused = false;
+    LEDControl.refreshAll();
+    break;
+  case kaleidoscope::HostPowerManagement::Sleep:
+    break;
+  }
+}
+
 void setup() {
   Kaleidoscope.setup();
 

src/Kaleidoscope/HostPowerManagement.cpp

@@ -33,22 +33,6 @@ void HostPowerManagement::begin(void) {
   Kaleidoscope.useLoopHook(loopHook);
 }
 
-void HostPowerManagement::toggleLEDs(HostPowerManagement::Event event) {
-  switch (event) {
-  case Suspend:
-    ::LEDControl.paused = true;
-    ::LEDControl.set_all_leds_to({0, 0, 0});
-    ::LEDControl.syncLeds();
-    break;
-  case Resume:
-    ::LEDControl.paused = false;
-    ::LEDControl.refreshAll();
-    break;
-  case Sleep:
-    break;
-  }
-}
-
 void HostPowerManagement::loopHook(bool post_clear) {
   if (post_clear)
     return;
@@ -75,7 +59,6 @@ void HostPowerManagement::loopHook(bool post_clear) {
 }
 
 __attribute__((weak)) void hostPowerManagementEventHandler(kaleidoscope::HostPowerManagement::Event event) {
-  HostPowerManagement.toggleLEDs(event);
 }
 
 kaleidoscope::HostPowerManagement HostPowerManagement;

src/Kaleidoscope/HostPowerManagement.h

@@ -37,8 +37,6 @@ class HostPowerManagement : public KaleidoscopePlugin {
     WakeupKeyboard.begin();
   };
 
-  void toggleLEDs(Event event);
-
  private:
   static bool was_suspended_;
   static bool initial_suspend_;