Add HaTS entrypoint for Magnification page

This entry point allows users to access and adjust Magnification
settings for low vision accessibility. Visibility is controlled by
the aconfig flag and SurveyFeatureProvider#isSurveyAvailable.

NO_IFTTT=Revisit preference_list scope

Bug: 380346799
Test: atest ToggleScreenMagnificationPreferenceFragmentTest
Flag: com.android.server.accessibility.enable_low_vision_hats
Change-Id: I81a55487734fe7b139391a6c95834c7313e54d7a

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

@@ -196,20 +196,17 @@ public class ToggleScreenMagnificationPreferenceFragment extends
 
     @Override
     protected void initSettingsPreference() {
-        // If the device doesn't support window magnification feature, it should hide the
-        // settings preference.
-        if (!isWindowMagnificationSupported(getContext())) {
-            return;
-        }
-
         final PreferenceCategory generalCategory = findPreference(KEY_GENERAL_CATEGORY);
-        // LINT.IfChange(preference_list)
+        if (isWindowMagnificationSupported(getContext())) {
-        addMagnificationModeSetting(generalCategory);
+            // LINT.IfChange(preference_list)
-        addFollowTypingSetting(generalCategory);
+            addMagnificationModeSetting(generalCategory);
-        addOneFingerPanningSetting(generalCategory);
+            addFollowTypingSetting(generalCategory);
-        addAlwaysOnSetting(generalCategory);
+            addOneFingerPanningSetting(generalCategory);
-        addJoystickSetting(generalCategory);
+            addAlwaysOnSetting(generalCategory);
-        // LINT.ThenChange(search_data)
+            addJoystickSetting(generalCategory);
+            // LINT.ThenChange(:search_data)
+        }
+        addFeedbackSetting(generalCategory);
     }
 
     @Override
@@ -346,6 +343,14 @@ public class ToggleScreenMagnificationPreferenceFragment extends
         return pref;
     }
 
+    private static Preference createFeedbackPreference(Context context) {
+        final Preference pref = new Preference(context);
+        pref.setTitle(R.string.accessibility_feedback_title);
+        pref.setSummary(R.string.accessibility_feedback_summary);
+        pref.setKey(MagnificationFeedbackPreferenceController.PREF_KEY);
+        return pref;
+    }
+
     private static boolean isJoystickSupported() {
         return DeviceConfig.getBoolean(
                 DeviceConfig.NAMESPACE_WINDOW_MANAGER,
@@ -371,6 +376,21 @@ public class ToggleScreenMagnificationPreferenceFragment extends
         addPreferenceController(joystickPreferenceController);
     }
 
+    private void addFeedbackSetting(PreferenceCategory generalCategory) {
+        if (!Flags.enableLowVisionHats()) {
+            return;
+        }
+
+        final Preference feedbackPreference = createFeedbackPreference(getPrefContext());
+        generalCategory.addPreference(feedbackPreference);
+
+        final MagnificationFeedbackPreferenceController magnificationFeedbackPreferenceController =
+                new MagnificationFeedbackPreferenceController(getContext(), this,
+                        MagnificationFeedbackPreferenceController.PREF_KEY);
+        magnificationFeedbackPreferenceController.displayPreference(getPreferenceScreen());
+        addPreferenceController(magnificationFeedbackPreferenceController);
+    }
+
     @Override
     public void showDialog(int dialogId) {
         super.showDialog(dialogId);
@@ -773,7 +793,8 @@ public class ToggleScreenMagnificationPreferenceFragment extends
                                     createFollowTypingPreference(context),
                                     createOneFingerPanningPreference(context),
                                     createAlwaysOnPreference(context),
-                                    createJoystickPreference(context)
+                                    createJoystickPreference(context),
+                                    createFeedbackPreference(context)
                             )
                             .forEach(pref ->
                                     rawData.add(createPreferenceSearchData(context, pref)));
@@ -810,9 +831,14 @@ public class ToggleScreenMagnificationPreferenceFragment extends
                             niks.add(MagnificationJoystickPreferenceController.PREF_KEY);
                         }
                     }
+
+                    if (!Flags.enableLowVisionHats()) {
+                        niks.add(MagnificationFeedbackPreferenceController.PREF_KEY);
+                    }
+
                     return niks;
                 }
-                // LINT.ThenChange(preference_list)
+                // LINT.ThenChange(:preference_list)
 
                 private SearchIndexableRaw createPreferenceSearchData(
                         Context context, Preference pref) {

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

@@ -336,6 +336,26 @@ public class ToggleScreenMagnificationPreferenceFragmentTest {
         assertThat(switchPreference.isChecked()).isFalse();
     }
 
+    @Test
+    @EnableFlags(Flags.FLAG_ENABLE_LOW_VISION_HATS)
+    public void onResume_enableLowVisionHaTS_feedbackPreferenceShouldReturnNotNull() {
+        mFragController.create(R.id.main_content, /* bundle= */ null).start().resume();
+
+        final Preference feedbackPreference = mFragController.get().findPreference(
+                MagnificationFeedbackPreferenceController.PREF_KEY);
+        assertThat(feedbackPreference).isNotNull();
+    }
+
+    @Test
+    @DisableFlags(Flags.FLAG_ENABLE_LOW_VISION_HATS)
+    public void onResume_disableLowVisionHaTS_feedbackPreferenceShouldReturnNull() {
+        mFragController.create(R.id.main_content, /* bundle= */ null).start().resume();
+
+        final Preference feedbackPreference = mFragController.get().findPreference(
+                MagnificationFeedbackPreferenceController.PREF_KEY);
+        assertThat(feedbackPreference).isNull();
+    }
+
     @Test
     public void onResume_haveRegisterToSpecificUris() {
         ShadowContentResolver shadowContentResolver = Shadows.shadowOf(
@@ -893,13 +913,14 @@ public class ToggleScreenMagnificationPreferenceFragmentTest {
     @Test
     @EnableFlags(com.android.settings.accessibility.Flags.FLAG_FIX_A11Y_SETTINGS_SEARCH)
     public void getRawDataToIndex_returnsAllPreferenceKeys() {
-        List<String> expectedSearchKeys = List.of(
+        final List<String> expectedSearchKeys = List.of(
                 KEY_MAGNIFICATION_SHORTCUT_PREFERENCE,
                 MagnificationModePreferenceController.PREF_KEY,
                 MagnificationFollowTypingPreferenceController.PREF_KEY,
                 MagnificationOneFingerPanningPreferenceController.PREF_KEY,
                 MagnificationAlwaysOnPreferenceController.PREF_KEY,
-                MagnificationJoystickPreferenceController.PREF_KEY);
+                MagnificationJoystickPreferenceController.PREF_KEY,
+                MagnificationFeedbackPreferenceController.PREF_KEY);
 
         final List<SearchIndexableRaw> rawData = ToggleScreenMagnificationPreferenceFragment
                 .SEARCH_INDEX_DATA_PROVIDER.getRawDataToIndex(mContext, true);
@@ -910,8 +931,7 @@ public class ToggleScreenMagnificationPreferenceFragmentTest {
 
     @Test
     @EnableFlags(com.android.settings.accessibility.Flags.FLAG_FIX_A11Y_SETTINGS_SEARCH)
-    public void
+    public void getNonIndexableKeys_windowMagnificationNotSupported_onlyShortcutSearchable() {
-            getNonIndexableKeys_windowMagnificationNotSupported_onlyShortcutPreferenceSearchable() {
         setWindowMagnificationSupported(false, false);
 
         final List<String> niks = ToggleScreenMagnificationPreferenceFragment
@@ -920,7 +940,8 @@ public class ToggleScreenMagnificationPreferenceFragmentTest {
                 .SEARCH_INDEX_DATA_PROVIDER.getRawDataToIndex(mContext, true);
         // Expect all search data, except the shortcut preference, to be in NIKs.
         final List<String> expectedNiks = rawData.stream().map(raw -> raw.key)
-                .filter(key -> !key.equals(KEY_MAGNIFICATION_SHORTCUT_PREFERENCE)).toList();
+                .filter(key -> !key.equals(KEY_MAGNIFICATION_SHORTCUT_PREFERENCE))
+                .toList();
 
         // In NonIndexableKeys == not searchable
         assertThat(niks).containsExactlyElementsIn(expectedNiks);
@@ -929,7 +950,32 @@ public class ToggleScreenMagnificationPreferenceFragmentTest {
     @Test
     @EnableFlags({
             com.android.settings.accessibility.Flags.FLAG_FIX_A11Y_SETTINGS_SEARCH,
-            Flags.FLAG_ENABLE_MAGNIFICATION_ONE_FINGER_PANNING_GESTURE})
+            Flags.FLAG_ENABLE_LOW_VISION_HATS})
+    public void
+            getNonIndexableKeys_windowMagnificationNotSupportedHatsOn_shortcutFeedbackSearchable() {
+        setWindowMagnificationSupported(false, false);
+
+        final List<String> niks = ToggleScreenMagnificationPreferenceFragment
+                .SEARCH_INDEX_DATA_PROVIDER.getNonIndexableKeys(mContext);
+        final List<SearchIndexableRaw> rawData = ToggleScreenMagnificationPreferenceFragment
+                .SEARCH_INDEX_DATA_PROVIDER.getRawDataToIndex(mContext, true);
+        // Expect all search data, except the shortcut preference and feedback preference, to be in
+        // NIKs.
+        final List<String> expectedNiks = rawData.stream().map(raw -> raw.key)
+                .filter(key ->
+                        !key.equals(KEY_MAGNIFICATION_SHORTCUT_PREFERENCE)
+                        && !key.equals(MagnificationFeedbackPreferenceController.PREF_KEY))
+                .toList();
+
+        // In NonIndexableKeys == not searchable
+        assertThat(niks).containsExactlyElementsIn(expectedNiks);
+    }
+
+    @Test
+    @EnableFlags({
+            com.android.settings.accessibility.Flags.FLAG_FIX_A11Y_SETTINGS_SEARCH,
+            Flags.FLAG_ENABLE_MAGNIFICATION_ONE_FINGER_PANNING_GESTURE,
+            Flags.FLAG_ENABLE_LOW_VISION_HATS})
     public void getNonIndexableKeys_hasShortcutAndAllFeaturesEnabled_allItemsSearchable() {
         setMagnificationTripleTapEnabled(true);
         setAlwaysOnSupported(true);
@@ -991,6 +1037,16 @@ public class ToggleScreenMagnificationPreferenceFragmentTest {
         assertThat(niks).contains(MagnificationJoystickPreferenceController.PREF_KEY);
     }
 
+    @Test
+    @DisableFlags(Flags.FLAG_ENABLE_LOW_VISION_HATS)
+    public void getNonIndexableKeys_hatsNotSupported_notSearchable() {
+        final List<String> niks = ToggleScreenMagnificationPreferenceFragment
+                .SEARCH_INDEX_DATA_PROVIDER.getNonIndexableKeys(mContext);
+
+        // In NonIndexableKeys == not searchable
+        assertThat(niks).contains(MagnificationFeedbackPreferenceController.PREF_KEY);
+    }
+
     private void putStringIntoSettings(String key, String componentName) {
         Settings.Secure.putString(mContext.getContentResolver(), key, componentName);
     }