added an input handling mode debug option

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

@@ -11,6 +11,7 @@ import java.util.HashMap;
 import io.github.sspanak.tt9.Logger;
 import io.github.sspanak.tt9.ime.helpers.Key;
 import io.github.sspanak.tt9.preferences.SettingsStore;
+import io.github.sspanak.tt9.preferences.screens.debug.ItemInputHandlingMode;
 
 
 abstract class KeyPadHandler extends InputMethodService {
@@ -121,6 +122,12 @@ abstract class KeyPadHandler extends InputMethodService {
 			return true;
 		}
 
+		if (settings.getInputHandlingMode() == ItemInputHandlingMode.RETURN_FALSE) {
+			return false;
+		} else if (settings.getInputHandlingMode() == ItemInputHandlingMode.CALL_SUPER) {
+			return super.onKeyDown(keyCode, event);
+		}
+
 		if (shouldBeOff()) {
 			return false;
 		}
@@ -160,6 +167,12 @@ abstract class KeyPadHandler extends InputMethodService {
 
 	@Override
 	public boolean onKeyLongPress(int keyCode, KeyEvent event) {
+		if (settings.getInputHandlingMode() == ItemInputHandlingMode.RETURN_FALSE) {
+			return false;
+		} else if (settings.getInputHandlingMode() == ItemInputHandlingMode.CALL_SUPER) {
+			return super.onKeyLongPress(keyCode, event);
+		}
+
 		if (shouldBeOff()) {
 			return false;
 		}
@@ -200,6 +213,12 @@ abstract class KeyPadHandler extends InputMethodService {
 			return true;
 		}
 
+		if (settings.getInputHandlingMode() == ItemInputHandlingMode.RETURN_FALSE) {
+			return false;
+		} else if (settings.getInputHandlingMode() == ItemInputHandlingMode.CALL_SUPER) {
+			return super.onKeyUp(keyCode, event);
+		}
+
 		if (shouldBeOff()) {
 			return false;
 		}

app/src/main/java/io/github/sspanak/tt9/preferences/SettingsStore.java

@@ -16,6 +16,7 @@ import java.util.Set;
 import io.github.sspanak.tt9.Logger;
 import io.github.sspanak.tt9.ime.modes.InputMode;
 import io.github.sspanak.tt9.languages.LanguageCollection;
+import io.github.sspanak.tt9.preferences.screens.debug.ItemInputHandlingMode;
 import io.github.sspanak.tt9.preferences.screens.hotkeys.SectionKeymap;
 
 
@@ -278,6 +279,14 @@ public class SettingsStore {
 		}
 	}
 
+	public int getInputHandlingMode() {
+		try {
+			return Integer.parseInt(prefs.getString("pref_input_handling_mode", String.valueOf(ItemInputHandlingMode.NORMAL)));
+		} catch (NumberFormatException ignored) {
+			return ItemInputHandlingMode.NORMAL;
+		}
+	}
+
 	public final static int DELETE_WORDS_SEARCH_DELAY = 500; // ms
 	public final static int DICTIONARY_AUTO_LOAD_COOLDOWN_TIME = 120000; // ms
 	public final static int DICTIONARY_IMPORT_BATCH_SIZE = 5000; // words

app/src/main/java/io/github/sspanak/tt9/preferences/screens/debug/DebugScreen.java

@@ -33,7 +33,8 @@ public class DebugScreen extends BaseScreenFragment {
 
 	@Override
 	protected void onCreate() {
-		intiLogLevelDropDown();
+		(new ItemLogLevel(findPreference(ItemLogLevel.NAME))).populate().preview().enableClickHandler();
+		(new ItemInputHandlingMode(findPreference(ItemInputHandlingMode.NAME), activity.settings)).populate().preview().enableClickHandler();
 		initSystemLogsSwitch();
 		enableLogsCopy();
 
@@ -42,10 +43,6 @@ public class DebugScreen extends BaseScreenFragment {
 		printLogs(includeSystemLogs);
 	}
 
-	private void intiLogLevelDropDown() {
-		(new ItemLogLevel(findPreference(ItemLogLevel.NAME))).populate().preview().enableClickHandler();
-	}
-
 	private void initSystemLogsSwitch() {
 		SwitchPreferenceCompat systemLogs = findPreference(SYSTEM_LOGS_SWITCH);
 		if (systemLogs != null) {

app/src/main/java/io/github/sspanak/tt9/preferences/screens/debug/ItemInputHandlingMode.java

@@ -0,0 +1,35 @@
+package io.github.sspanak.tt9.preferences.screens.debug;
+
+import androidx.preference.DropDownPreference;
+
+import java.util.LinkedHashMap;
+
+import io.github.sspanak.tt9.preferences.SettingsStore;
+import io.github.sspanak.tt9.preferences.items.ItemDropDown;
+
+public class ItemInputHandlingMode extends ItemDropDown {
+	public static final int NORMAL = 0;
+	public static final int RETURN_FALSE = 1;
+	public static final int CALL_SUPER = 2;
+
+	public static final String NAME = "pref_input_handling_mode";
+
+	private SettingsStore settings;
+
+	ItemInputHandlingMode(DropDownPreference item, SettingsStore settings) {
+		super(item);
+		this.settings = settings;
+	}
+
+	public ItemInputHandlingMode populate() {
+		LinkedHashMap<Integer, String> values = new LinkedHashMap<>();
+		values.put(NORMAL, "Normal");
+		values.put(RETURN_FALSE, "Return False");
+		values.put(CALL_SUPER, "Call Super");
+
+		super.populate(values);
+		super.setValue(String.valueOf(settings.getInputHandlingMode()));
+
+		return this;
+	}
+}

app/src/main/res/xml/prefs_screen_debug.xml

@@ -7,6 +7,12 @@
 		app:layout="@layout/pref_text"
 		app:title="@string/pref_category_usage_stats" />
 
+	<DropDownPreference
+		app:iconSpaceReserved="false"
+		app:key="pref_input_handling_mode"
+		app:layout="@layout/pref_dropdown"
+		app:title="Keypad Handling Mode" />
+
 	<DropDownPreference
 		app:iconSpaceReserved="false"
 		app:key="pref_log_level"