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Deprecated APIs and their replacements

As the firmware evolves, there are - and will be - APIs that we deprecate, and eventually remove. This document is a short guide that lists the deprecations - along with when it happened, and when the functionality will be removed -, suggested upgrade paths, and any other information that may be useful.

If any of this does not make sense to you, or you have trouble updating your .ino sketch, do not hesitate to write us at help@keyboard.io, we can help you fix it.

Sheduled for removal by 2018-05-26

These APIs and functions have been deprecated for a long time, and as far as we can tell, aren't used by any third party or user code anymore.

Kaleidoscope.setup(KEYMAP_SIZE)

The Kaleidoscope.setup() method is still around, and is not deprecated, but the variant of it that takes a keymap size is, and has been since October 2017.

Instead, one should use the argument-less Kaleidoscope.setup(), and the new KEYMAP() macros to define a keymap.

event_handler_hook_use, loop_hook_use, and USE_PLUGINS

Deprecated in October 2017, these are old aliases that should no longer be in use. They were replaced by Kaleidoscope.useEventHandlerHook, Kaleidoscope.useLoopHook, and Kaleidoscope.use, respectively.

The replacements themselves are also deprecated - see below -, but their removal will come at a later date.

MOMENTARY_OFFSET

Deprecated in October 2017, replaced by LAYER_SHIFT_OFFSET.

This symbol was meant to be used by plugins, not user code, and as far as we know, no third party plugin ever used it.

key_was_pressed, key_is_pressed, key_toggled_on, key_toggled_off

Deprecated in July 2017, replaced by keyWasPressed, keyIsPressed, keyToggledOn, and keyToggledOff, respectively.

Sheduled for removal by 2018-07-12

We aim at making a new release by mid-July, and APIs we deprecate now, will be removed shortly before the major release. We may deprecate further APIs during the next month (until mid-June), and those deprecations will share the same removal date. We will try our best to minimize deprecations, and do them as soon as possible, to give everyone at least a month to prepare and update.

Kaleidoscope.use()

Deprecated in May 2018, this method is part of the old plugin API, replaced by KALEIDOSCOPE_INIT_PLUGINS. To upgrade, you need to modify your .ino sketch file, and replace the text Kaleidoscope.use with KALEIDOSCOPE_INIT_PLUGINS, then remove the & from all of the plugins inside it, and finally, move it outside of setup().

If your current sketch looks like this:

void setup() {
  Kaleidoscope.use(&Plugin1, &Plugin2);
  Kaleidoscope.setup();
}

You should change it so that it looks like this instead:

KALEIDOSCOPE_INIT_PLUGINS(Plugin1, Plugin2);

void setup() {
  Kaleidoscope.setup();
}

The old-style (v1) plugin API

This includes using KaleidoscopePlugin, Kaleidoscope.useEventHandlerHook, Kaleidoscope.replaceEventHandlerHook, Kaleidoscope.appendEventHandlerHook, Kaleidoscope.useLoopHook, Kaleidoscope.replaceLoopHook, Kaleidoscope.appendLoopHook. They were deprecated in May 2017.

Their replacement is the new plugin API:

namespace kaleidoscope {

enum class EventHandlerResult {
  OK,
  EVENT_CONSUMED,
  ERROR,
};

class Plugin {
public:
  EventHandlerResult onSetup();
  EventHandlerResult beforeEachCycle();
  EventHandlerResult onKeyswitchEvent(Key &mapped_key, byte row, byte col, uint8_t key_state);
  EventHandlerResult beforeReportingState();
  EventHandlerResult afterEachCycle();
};

}

Plugins are supposed to implement this new API, and then be initialised via KALEIDOSCOPE_INIT_PLUGINS.

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