(DO NOT MERGE) Add debug setting to force hardware special key

Bug: 13988700
Change-Id: If23f8a14097431e76a303a6d6c24e8d9835fb655
(cherry picked from commit 3659c70fc3)

java/res/values/donottranslate.xml

@@ -22,10 +22,11 @@
          See {@link SettingsValues#needsToShowVoiceInputKey(SharedPreferences,Resources)} -->
     <string name="voice_mode_main">0</string>
 
-    <!-- Title for Latin keyboard debug settings activity / dialog -->
+    <!-- Title for Android keyboard debug settings activity / dialog -->
-    <string name="english_ime_debug_settings">Android keyboard Debug settings</string>
+    <string name="english_ime_debug_settings">Android Keyboard Debug settings</string>
     <string name="prefs_debug_mode">Debug Mode</string>
     <string name="prefs_force_non_distinct_multitouch">Force non-distinct multitouch</string>
+    <string name="prefs_force_physical_keyboard_special_key">Force physical keyboard special key</string>
 
     <!-- Subtype locale display name exceptions.
          For each exception, there should be related string resources for display name that may have

java/res/xml/prefs_screen_debug.xml

@@ -30,6 +30,11 @@
         android:title="@string/prefs_force_non_distinct_multitouch"
         android:defaultValue="false"
         android:persistent="true" />
+    <CheckBoxPreference
+        android:key="force_physical_keyboard_special_key"
+        android:title="@string/prefs_force_physical_keyboard_special_key"
+        android:defaultValue="false"
+        android:persistent="true" />
     <CheckBoxPreference
         android:key="pref_sliding_key_input_preview"
         android:title="@string/sliding_key_input_preview"

java/src/com/android/inputmethod/latin/LatinIME.java

@@ -155,7 +155,7 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
     @UsedForTesting final KeyboardSwitcher mKeyboardSwitcher;
     private final SubtypeSwitcher mSubtypeSwitcher;
     private final SubtypeState mSubtypeState = new SubtypeState();
-    private final SpecialKeyDetector mSpecialKeyDetector = new SpecialKeyDetector();
+    private final SpecialKeyDetector mSpecialKeyDetector;
 
     // Object for reacting to adding/removing a dictionary pack.
     private final BroadcastReceiver mDictionaryPackInstallReceiver =
@@ -517,6 +517,7 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
         mSettings = Settings.getInstance();
         mSubtypeSwitcher = SubtypeSwitcher.getInstance();
         mKeyboardSwitcher = KeyboardSwitcher.getInstance();
+        mSpecialKeyDetector = new SpecialKeyDetector(this);
         mIsHardwareAcceleratedDrawingEnabled =
                 InputMethodServiceCompatUtils.enableHardwareAcceleration(this);
         Log.i(TAG, "Hardware accelerated drawing: " + mIsHardwareAcceleratedDrawingEnabled);

java/src/com/android/inputmethod/latin/SpecialKeyDetector.java

@@ -16,9 +16,17 @@
 
 package com.android.inputmethod.latin;
 
+import android.content.Context;
 import android.view.KeyEvent;
 
 final class SpecialKeyDetector {
+    /**
+     * Special physical key detector
+     * @param context a context of this detector.
+     */
+    public SpecialKeyDetector(final Context context) {
+    }
+
     /**
      * Record a down key event.
      * @param keyEvent a down key event.

java/src/com/android/inputmethod/latin/settings/DebugSettings.java

@@ -19,6 +19,8 @@ package com.android.inputmethod.latin.settings;
 public final class DebugSettings {
     public static final String PREF_DEBUG_MODE = "debug_mode";
     public static final String PREF_FORCE_NON_DISTINCT_MULTITOUCH = "force_non_distinct_multitouch";
+    public static final String PREF_FORCE_PHYSICAL_KEYBOARD_SPECIAL_KEY =
+            "force_physical_keyboard_special_key";
     public static final String PREF_KEY_PREVIEW_SHOW_UP_START_SCALE =
             "pref_key_preview_show_up_start_scale";
     public static final String PREF_KEY_PREVIEW_DISMISS_END_SCALE =

java/src/com/android/inputmethod/latin/settings/DebugSettingsFragment.java

@@ -133,7 +133,8 @@ public final class DebugSettingsFragment extends SubScreenFragment
             mServiceNeedsRestart = true;
             return;
         }
-        if (key.equals(DebugSettings.PREF_FORCE_NON_DISTINCT_MULTITOUCH)) {
+        if (key.equals(DebugSettings.PREF_FORCE_NON_DISTINCT_MULTITOUCH)
+                || key.equals(DebugSettings.PREF_FORCE_PHYSICAL_KEYBOARD_SPECIAL_KEY)) {
             mServiceNeedsRestart = true;
             return;
         }