the virtual arrow keys can now move the text cursor

app/src/main/java/io/github/sspanak/tt9/ime/HotkeyHandler.java

@@ -101,6 +101,11 @@ public abstract class HotkeyHandler extends CommandHandler {
 	}
 
 
+	public boolean onKeyMoveCursor(boolean backward) {
+		return textField.moveCursor(backward);
+	}
+
+
 	public boolean onKeyFilterClear(boolean validateOnly) {
 		if (suggestionOps.isEmpty()) {
 			return false;

app/src/main/java/io/github/sspanak/tt9/ime/helpers/TextField.java

@@ -5,6 +5,7 @@ import android.text.Spannable;
 import android.text.SpannableString;
 import android.text.style.StyleSpan;
 import android.text.style.UnderlineSpan;
+import android.view.KeyEvent;
 import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.InputConnection;
 
@@ -233,4 +234,21 @@ public class TextField extends InputField {
 
 		return styledWord;
 	}
+
+
+	public boolean moveCursor(boolean backward) {
+		if (
+			connection == null
+			|| (backward && getStringBeforeCursor(1).isEmpty())
+			|| (!backward && getStringAfterCursor(1).isEmpty())
+		) {
+			return false;
+		}
+
+		int keyCode = backward ? KeyEvent.KEYCODE_DPAD_LEFT : KeyEvent.KEYCODE_DPAD_RIGHT;
+		connection.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, keyCode));
+		connection.sendKeyEvent(new KeyEvent(KeyEvent.ACTION_UP, keyCode));
+
+		return true;
+	}
 }

app/src/main/java/io/github/sspanak/tt9/ui/main/keys/SoftKey.java

@@ -151,8 +151,6 @@ public class SoftKey extends androidx.appcompat.widget.AppCompatButton implement
 
 		if (keyId == R.id.soft_key_add_word) { tt9.addWord(); return true; }
 		if (keyId == R.id.soft_key_command_palette) return tt9.onKeyCommandPalette(false);
-		if (keyId == R.id.soft_key_left_arrow) return tt9.onKeyScrollSuggestion(false, true);
-		if (keyId == R.id.soft_key_right_arrow) return tt9.onKeyScrollSuggestion(false, false);
 		if (keyId == R.id.soft_key_language) return tt9.onKeyNextLanguage(false);
 		if (keyId == R.id.soft_key_settings) { tt9.showSettings(); return true; }
 		if (keyId == R.id.soft_key_voice_input) { tt9.toggleVoiceInput(); return true; }

app/src/main/java/io/github/sspanak/tt9/ui/main/keys/SoftKeyArrow.java

@@ -0,0 +1,38 @@
+package io.github.sspanak.tt9.ui.main.keys;
+
+import android.content.Context;
+import android.util.AttributeSet;
+
+import io.github.sspanak.tt9.R;
+
+public class SoftKeyArrow extends SoftKey {
+	public SoftKeyArrow(Context context) { super(context); }
+	public SoftKeyArrow(Context context, AttributeSet attrs) { super(context, attrs); }
+	public SoftKeyArrow(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); }
+
+	@Override
+	protected boolean handleRelease() {
+		return handleHold();
+	}
+
+	@Override
+	protected boolean handleHold() {
+		if (!validateTT9Handler()) {
+			return false;
+		}
+
+		int keyId = getId();
+		if (keyId == R.id.soft_key_left_arrow) return onLeft();
+		if (keyId == R.id.soft_key_right_arrow) return onRight();
+
+		return false;
+	}
+
+	private boolean onLeft() {
+		return tt9.onKeyScrollSuggestion(false, true) || tt9.onKeyMoveCursor(true);
+	}
+
+	private boolean onRight() {
+		return tt9.onKeyScrollSuggestion(false, false) || tt9.onKeyMoveCursor(false);
+	}
+}

app/src/main/res/layout/main_numpad.xml

@@ -15,7 +15,7 @@
 		android:layout_height="@dimen/numpad_candidate_height"
 		android:layoutDirection="ltr">
 
-		<io.github.sspanak.tt9.ui.main.keys.SoftKey
+		<io.github.sspanak.tt9.ui.main.keys.SoftKeyArrow
 			android:id="@+id/soft_key_left_arrow"
 			style="@android:style/Widget.Holo.Button.Borderless"
 			android:layout_width="@dimen/numpad_arrow_key_width"
@@ -54,7 +54,7 @@
 			android:id="@+id/separator_candidates_2"
 			style="@style/numSeparator" />
 
-		<io.github.sspanak.tt9.ui.main.keys.SoftKey
+		<io.github.sspanak.tt9.ui.main.keys.SoftKeyArrow
 			android:id="@+id/soft_key_right_arrow"
 			style="@android:style/Widget.Holo.Button.Borderless"
 			android:layout_width="@dimen/numpad_arrow_key_width"