feat(EDT): Update the preference interaction and visiblity logic

The EDT toggle will be an subsetting in the DarkTheme settings page
- When the Dark Theme main toggle is on, we check the EDT setting to
decide applying normal DarkTheme or EDT now.
- The EDT preference is disabled when DarkTheme is off

Bug: 368721320
Flag: android.view.accessibility.force_invert_color
Test: atest ToggleForceInvertPreferenceControllerTest
Change-Id: I97841c5b2f03c8c0fb37e0be309d15f312bfedbd

src/com/android/settings/accessibility/ToggleForceInvertPreferenceController.java

@@ -16,11 +16,16 @@
 
 package com.android.settings.accessibility;
 
+import static com.android.settings.accessibility.AccessibilityUtil.State.OFF;
+import static com.android.settings.accessibility.AccessibilityUtil.State.ON;
+
 import android.content.Context;
+import android.content.res.Configuration;
 import android.provider.Settings;
 import android.view.accessibility.Flags;
 
-import androidx.annotation.VisibleForTesting;
+import androidx.annotation.NonNull;
+import androidx.preference.Preference;
 
 import com.android.settings.R;
 import com.android.settings.core.TogglePreferenceController;
@@ -28,27 +33,28 @@ import com.android.settings.core.TogglePreferenceController;
 /** A toggle preference controller for force invert (force dark). */
 public class ToggleForceInvertPreferenceController extends TogglePreferenceController {
 
-    public static final String SETTINGS_KEY =
-            Settings.Secure.ACCESSIBILITY_FORCE_INVERT_COLOR_ENABLED;
-
-    @VisibleForTesting
-    static final int ON = 1;
-    @VisibleForTesting
-    static final int OFF = 0;
-
     public ToggleForceInvertPreferenceController(Context context, String preferenceKey) {
         super(context, preferenceKey);
     }
 
     @Override
     public boolean isChecked() {
-        return Settings.Secure.getInt(mContext.getContentResolver(), SETTINGS_KEY, OFF) != OFF;
+        return Settings.Secure.getInt(mContext.getContentResolver(),
+                Settings.Secure.ACCESSIBILITY_FORCE_INVERT_COLOR_ENABLED, OFF) != OFF;
     }
 
     @Override
     public boolean setChecked(boolean isChecked) {
         return Settings.Secure.putInt(mContext.getContentResolver(),
-                SETTINGS_KEY, isChecked ? ON : OFF);
+                Settings.Secure.ACCESSIBILITY_FORCE_INVERT_COLOR_ENABLED, isChecked ? ON : OFF);
+    }
+
+    @Override
+    public void updateState(@NonNull Preference preference) {
+        super.updateState(preference);
+        final boolean isDarkModeActivated = (mContext.getResources().getConfiguration().uiMode
+                & Configuration.UI_MODE_NIGHT_YES) != 0;
+        preference.setEnabled(isDarkModeActivated);
     }
 
     @Override

tests/robotests/src/com/android/settings/accessibility/ToggleForceInvertPreferenceControllerTest.java

@@ -23,13 +23,18 @@ import static com.android.settings.accessibility.AccessibilityUtil.State.ON;
 
 import static com.google.common.truth.Truth.assertThat;
 
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+
 import android.content.Context;
+import android.content.res.Configuration;
 import android.platform.test.annotations.RequiresFlagsDisabled;
 import android.platform.test.annotations.RequiresFlagsEnabled;
 import android.platform.test.flag.junit.CheckFlagsRule;
 import android.platform.test.flag.junit.DeviceFlagsValueProvider;
 import android.provider.Settings;
 
+import androidx.preference.Preference;
 import androidx.test.core.app.ApplicationProvider;
 
 import com.android.settings.core.BasePreferenceController;
@@ -69,6 +74,30 @@ public class ToggleForceInvertPreferenceControllerTest {
                 .isEqualTo(BasePreferenceController.AVAILABLE);
     }
 
+    @Test
+    public void updateState_darkModeOn_preferenceEnabled() {
+        Configuration config = mContext.getResources().getConfiguration();
+        config.uiMode = Configuration.UI_MODE_NIGHT_YES;
+        mContext.getResources().updateConfiguration(config, null);
+
+        Preference preference = mock(Preference.class);
+        mController.updateState(preference);
+
+        verify(preference).setEnabled(true);
+    }
+
+    @Test
+    public void updateState_darkModeOff_preferenceDisabled() {
+        Configuration config = mContext.getResources().getConfiguration();
+        config.uiMode = Configuration.UI_MODE_NIGHT_NO;
+        mContext.getResources().updateConfiguration(config, null);
+
+        Preference preference = mock(Preference.class);
+        mController.updateState(preference);
+
+        verify(preference).setEnabled(false);
+    }
+
     @Test
     public void settingOff_reflectsCorrectValue() {
         setEnabled(false);