Fix slider movements changing input focus

The slider was repeatedly sending arrow keys, which change the focused
input when the end of a text box is hit.

A new key is added that implements cursor movements using the
`InputConnection` API.
The new keys are defined as `KeyValue.Editing`, which are no longer only
context menu actions.

The behavior when a selection has started is changed. The selection is
modified instead of cleared even when shift isn't pressed or the
selection would become empty.

Fallbacks to sending arrow keys for editors that do not support the API,
like Termux.

1 files changed, 16 insertions, 4 deletions

diff --git a/srcs/juloo.keyboard2/KeyValue.java b/srcs/juloo.keyboard2/KeyValue.java
index fe55b6d..0972214 100644
--- a/srcs/juloo.keyboard2/KeyValue.java
+++ b/srcs/juloo.keyboard2/KeyValue.java
@@ -70,6 +70,8 @@ final class KeyValue
     SHARE,
     ASSIST,
     AUTOFILL,
+    CURSOR_LEFT,
+    CURSOR_RIGHT,
   }
 
   public static enum Placeholder
@@ -321,6 +323,7 @@ final class KeyValue
       case "\\@": return makeStringKey("@");
       case "\\\\": return makeStringKey("\\");
 
+      /* Modifiers and dead-keys */
       case "shift": return modifierKey(0xE00A, Modifier.SHIFT, 0);
       case "ctrl": return modifierKey("Ctrl", Modifier.CTRL, 0);
       case "alt": return modifierKey("Alt", Modifier.ALT, 0);
@@ -351,6 +354,7 @@ final class KeyValue
       case "fn": return modifierKey("Fn", Modifier.FN, 0);
       case "meta": return modifierKey("Meta", Modifier.META, 0);
 
+      /* Special event keys */
       case "config": return eventKey(0xE004, Event.CONFIG, FLAG_SMALLER_FONT);
       case "switch_text": return eventKey("ABC", Event.SWITCH_TEXT, FLAG_SMALLER_FONT);
       case "switch_numeric": return eventKey("123+", Event.SWITCH_NUMERIC, FLAG_SMALLER_FONT);
@@ -365,6 +369,7 @@ final class KeyValue
       case "capslock": return eventKey(0xE012, Event.CAPS_LOCK, 0);
       case "voice_typing": return eventKey(0xE015, Event.SWITCH_VOICE_TYPING, FLAG_SMALLER_FONT);
 
+      /* Key events */
       case "esc": return keyeventKey("Esc", KeyEvent.KEYCODE_ESCAPE, FLAG_SMALLER_FONT);
       case "enter": return keyeventKey(0xE00E, KeyEvent.KEYCODE_ENTER, 0);
       case "up": return keyeventKey(0xE005, KeyEvent.KEYCODE_DPAD_UP, 0);
@@ -392,6 +397,7 @@ final class KeyValue
       case "f12": return keyeventKey("F12", KeyEvent.KEYCODE_F12, FLAG_SMALLER_FONT);
       case "tab": return keyeventKey(0xE00F, KeyEvent.KEYCODE_TAB, FLAG_SMALLER_FONT);
 
+      /* Spaces */
       case "\\t": return charKey("\\t", '\t', 0); // Send the tab character
       case "space": return charKey("\r", ' ', FLAG_KEY_FONT | FLAG_SECONDARY);
       case "nbsp": return charKey("\u237d", '\u00a0', FLAG_SMALLER_FONT);
@@ -408,10 +414,6 @@ final class KeyValue
       case "blt": return charKey("<", '>', 0);
       case "bgt": return charKey(">", '<', 0);
 
-      case "removed": return placeholderKey(Placeholder.REMOVED);
-      case "f11_placeholder": return placeholderKey(Placeholder.F11);
-      case "f12_placeholder": return placeholderKey(Placeholder.F12);
-
       /* hebrew niqqud */
       case "qamats": return charKey("\u05E7\u05B8", '\u05B8', 0); // kamatz
       case "patah": return charKey("\u05E4\u05B7", '\u05B7', 0); // patach
@@ -443,6 +445,7 @@ final class KeyValue
       case "zwj": return charKey("zwj", '\u200D', 0); // zero-width joiner (provides ligature)
       case "zwnj": return charKey("zwnj", '\u200C', 0); // zero-width non joiner (prevents unintended ligature)
 
+      /* Editing keys */
       case "copy": return editingKey(0xE030, Editing.COPY);
       case "paste": return editingKey(0xE032, Editing.PASTE);
       case "cut": return editingKey(0xE031, Editing.CUT);
@@ -454,6 +457,15 @@ final class KeyValue
       case "replaceText": return editingKey("repl", Editing.REPLACE);
       case "textAssist": return editingKey(0xE038, Editing.ASSIST);
       case "autofill": return editingKey("auto", Editing.AUTOFILL);
+      case "cursor_left": return editingKey(0xE008, Editing.CURSOR_LEFT);
+      case "cursor_right": return editingKey(0xE006, Editing.CURSOR_RIGHT);
+
+      /* Placeholder keys */
+      case "removed": return placeholderKey(Placeholder.REMOVED);
+      case "f11_placeholder": return placeholderKey(Placeholder.F11);
+      case "f12_placeholder": return placeholderKey(Placeholder.F12);
+
+      /* Fallback to a string key that types its name */
       default: return makeStringKey(name);
     }
   }