settings(uwb): Show message when UWB is unavailable due to regulatory

Bug: 270515435
Test: Manual tests
Test: atest UwbPreferenceControllerTest
Change-Id: I8a6f01aba237234fe88e42ba338a1df02623f7da

res/values/strings.xml

@@ -11522,9 +11522,12 @@
     <!-- Summary for UWB preference. [CHAR_LIMIT=NONE]-->
     <string name="uwb_settings_summary">Helps identify the relative position of nearby devices that have UWB</string>
 
-    <!-- Summary for UWB preference when airplane mode is disabled. [CHAR_LIMIT=NONE]-->
+    <!-- Summary for UWB preference when airplane mode is enabled. [CHAR_LIMIT=NONE]-->
     <string name="uwb_settings_summary_airplane_mode">Turn off airplane mode to use UWB </string>
 
+    <!-- Summary for UWB preference when UWB is unavailable due to regulatory requirements. [CHAR_LIMIT=NONE]-->
+    <string name="uwb_settings_summary_no_uwb_regulatory">UWB is unavailable in the current location</string>
+
     <!-- Label for the camera use toggle [CHAR LIMIT=40] -->
     <string name="camera_toggle_title">Camera access</string>
     <!-- Label for the camera use toggle [CHAR LIMIT=40] -->

src/com/android/settings/uwb/UwbPreferenceController.java

@@ -16,6 +16,8 @@
 
 package com.android.settings.uwb;
 
+import static android.uwb.UwbManager.AdapterStateCallback.STATE_CHANGED_REASON_SYSTEM_REGULATION;
+import static android.uwb.UwbManager.AdapterStateCallback.STATE_DISABLED;
 import static android.uwb.UwbManager.AdapterStateCallback.STATE_ENABLED_ACTIVE;
 import static android.uwb.UwbManager.AdapterStateCallback.STATE_ENABLED_INACTIVE;
 
@@ -50,7 +52,7 @@ public class UwbPreferenceController extends TogglePreferenceController implemen
     private final UwbUtils mUwbUtils;
     private boolean mAirplaneModeOn;
     private /* @AdapterStateCallback.State */ int mState;
-    private /* @AdapterStateCallback.StateChangedReason */ int mReason;
+    private /* @AdapterStateCallback.StateChangedReason */ int mStateReason;
     private final BroadcastReceiver mAirplaneModeChangedReceiver;
     private final AdapterStateCallback mAdapterStateCallback;
     private final Executor mExecutor;
@@ -74,7 +76,7 @@ public class UwbPreferenceController extends TogglePreferenceController implemen
             };
             mAdapterStateCallback = (state, reason) -> {
                 mState = state;
-                mReason = reason;
+                mStateReason = reason;
                 updateState(mPreference);
             };
         } else {
@@ -92,12 +94,18 @@ public class UwbPreferenceController extends TogglePreferenceController implemen
         return mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_UWB);
     }
 
+    private boolean isUwbDisabledDueToRegulatory() {
+        return mState == STATE_DISABLED && mStateReason == STATE_CHANGED_REASON_SYSTEM_REGULATION;
+    }
+
     @Override
     public int getAvailabilityStatus() {
         if (!isUwbSupportedOnDevice()) {
             return UNSUPPORTED_ON_DEVICE;
         } else if (mAirplaneModeOn) {
             return DISABLED_DEPENDENT_SETTING;
+        } else if (isUwbDisabledDueToRegulatory()) {
+            return CONDITIONALLY_UNAVAILABLE;
         } else {
             return AVAILABLE;
         }
@@ -134,7 +142,7 @@ public class UwbPreferenceController extends TogglePreferenceController implemen
     public void onStart() {
         if (isUwbSupportedOnDevice()) {
             mState = mUwbManager.getAdapterState();
-            mReason = AdapterStateCallback.STATE_CHANGED_REASON_ERROR_UNKNOWN;
+            mStateReason = AdapterStateCallback.STATE_CHANGED_REASON_ERROR_UNKNOWN;
             mAirplaneModeOn = mUwbUtils.isAirplaneModeOn(mContext);
             mUwbManager.registerAdapterStateCallback(mExecutor, mAdapterStateCallback);
             mContext.registerReceiver(mAirplaneModeChangedReceiver,
@@ -163,6 +171,9 @@ public class UwbPreferenceController extends TogglePreferenceController implemen
     public CharSequence getSummary() {
         if (mAirplaneModeOn) {
             return mContext.getResources().getString(R.string.uwb_settings_summary_airplane_mode);
+        } else if (isUwbDisabledDueToRegulatory()) {
+            return mContext.getResources().getString(
+                    R.string.uwb_settings_summary_no_uwb_regulatory);
         } else {
             return mContext.getResources().getString(R.string.uwb_settings_summary);
         }

tests/robotests/src/com/android/settings/uwb/UwbPreferenceControllerTest.java

@@ -17,6 +17,7 @@
 package com.android.settings.uwb;
 
 import static android.uwb.UwbManager.AdapterStateCallback.STATE_CHANGED_REASON_SYSTEM_POLICY;
+import static android.uwb.UwbManager.AdapterStateCallback.STATE_CHANGED_REASON_SYSTEM_REGULATION;
 import static android.uwb.UwbManager.AdapterStateCallback.STATE_DISABLED;
 import static android.uwb.UwbManager.AdapterStateCallback.STATE_ENABLED_ACTIVE;
 import static android.uwb.UwbManager.AdapterStateCallback.STATE_ENABLED_INACTIVE;
@@ -62,6 +63,7 @@ import org.robolectric.RobolectricTestRunner;
 public class UwbPreferenceControllerTest {
     private static final String TEST_SUMMARY = "uwb";
     private static final String TEST_AIRPLANE_SUMMARY = "apm_uwb";
+    private static final String TEST_NO_UWB_REGULATORY_SUMMARY = "regulatory_uwb";
     @Rule
     public MockitoRule rule = MockitoJUnit.rule();
 
@@ -96,6 +98,8 @@ public class UwbPreferenceControllerTest {
                 .thenReturn(TEST_SUMMARY);
         when(mResources.getString(R.string.uwb_settings_summary_airplane_mode))
                 .thenReturn(TEST_AIRPLANE_SUMMARY);
+        when(mResources.getString(R.string.uwb_settings_summary_no_uwb_regulatory))
+                .thenReturn(TEST_NO_UWB_REGULATORY_SUMMARY);
         when(mContext.getMainLooper()).thenReturn(mTestLooper.getLooper());
         when(mContext.getSystemService(UwbManager.class)).thenReturn(mUwbManager);
         when(mContext.getResources()).thenReturn(mResources);
@@ -219,5 +223,18 @@ public class UwbPreferenceControllerTest {
         verify(mPreference).setEnabled(true);
         verify(mPreference, times(2)).setSummary(TEST_SUMMARY);
     }
+
+    @Test
+    public void updateStateAndSummary_uwbDisabledDueToRegulatory() {
+        startControllerAndCaptureCallbacks();
+        clearInvocations(mUwbManager, mPreference);
+
+        mAdapterStateCallbackArgumentCaptor.getValue().onStateChanged(
+                STATE_DISABLED, STATE_CHANGED_REASON_SYSTEM_REGULATION);
+
+        assertThat(mController.getAvailabilityStatus())
+                .isEqualTo(BasePreferenceController.CONDITIONALLY_UNAVAILABLE);
+        verify(mPreference, times(2)).setSummary(TEST_NO_UWB_REGULATORY_SUMMARY);
+    }
 }