1 files changed, 110 insertions, 0 deletions
diff --git a/keyboards/planck/keymaps/ariccb/features/select_word.c b/keyboards/planck/keymaps/ariccb/features/select_word.c
new file mode 100644
index 0000000000..c0ffe0a90d
--- /dev/null
+++ b/keyboards/planck/keymaps/ariccb/features/select_word.c
@@ -0,0 +1,110 @@
+// Copyright 2021 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+// For full documentation, see
+// https://getreuer.info/posts/keyboards/select-word
+
+#include "select_word.h"
+
+// Mac users, uncomment this line:
+// #define MAC_HOTKEYS
+
+enum { STATE_NONE, STATE_SELECTED, STATE_WORD, STATE_FIRST_LINE, STATE_LINE };
+
+bool process_select_word(uint16_t keycode, keyrecord_t* record,
+                         uint16_t sel_keycode) {
+  static uint8_t state = STATE_NONE;
+
+  if (keycode == KC_LSFT || keycode == KC_RSFT) { return true; }
+
+  if (keycode == sel_keycode && record->event.pressed) {  // On key press.
+    const uint8_t mods = get_mods();
+#ifndef NO_ACTION_ONESHOT
+    const uint8_t all_mods = mods | get_oneshot_mods();
+#else
+    const uint8_t all_mods = mods;
+#endif  // NO_ACTION_ONESHOT
+    if ((all_mods & MOD_MASK_SHIFT) == 0) {  // Select word.
+#ifdef MAC_HOTKEYS
+      register_code(KC_LALT);
+#else
+      register_code(KC_LCTL);
+#endif  // MAC_HOTKEYS
+      if (state == STATE_NONE) {
+        tap_code(KC_RGHT);
+        tap_code(KC_LEFT);
+      }
+      register_code(KC_LSFT);
+      register_code(KC_RGHT);
+      state = STATE_WORD;
+    } else {  // Select line.
+      if (state == STATE_NONE) {
+        clear_mods();
+#ifndef NO_ACTION_ONESHOT
+        clear_oneshot_mods();
+#endif  // NO_ACTION_ONESHOT
+#ifdef MAC_HOTKEYS
+        register_code16(LCTL(KC_A));
+        tap_code16(LSFT(KC_E));
+        unregister_code16(LCTL(KC_A));
+#else
+        tap_code(KC_HOME);
+        tap_code16(LSFT(KC_END));
+#endif  // MAC_HOTKEYS
+        set_mods(mods);
+        state = STATE_FIRST_LINE;
+      } else {
+        register_code(KC_DOWN);
+        state = STATE_LINE;
+      }
+    }
+    return false;
+  }
+
+  // `sel_keycode` was released, or another key was pressed.
+  switch (state) {
+    case STATE_WORD:
+      unregister_code(KC_RGHT);
+      unregister_code(KC_LSFT);
+#ifdef MAC_HOTKEYS
+      unregister_code(KC_LALT);
+#else
+      unregister_code(KC_LCTL);
+#endif  // MAC_HOTKEYS
+      state = STATE_SELECTED;
+      break;
+
+    case STATE_FIRST_LINE:
+      state = STATE_SELECTED;
+      break;
+
+    case STATE_LINE:
+      unregister_code(KC_DOWN);
+      state = STATE_SELECTED;
+      break;
+
+    case STATE_SELECTED:
+      if (keycode == KC_ESC) {
+        tap_code(KC_RGHT);
+        state = STATE_NONE;
+        return false;
+      }
+      // Fallthrough.
+    default:
+      state = STATE_NONE;
+  }
+
+  return true;
+}