Fix "Turn on Wi-Fi scanning?" does not pop up when clicking "Turn on Wi-Fi automatically"

We should make sure both 'Use location' & 'Wi-Fi scanning' are enabled
before calling setWifiWakeupEnabled.

Bug: 131777439
Test: manual
Change-Id: I602917cfa7c5581ecb414e8c44b4e20c8f9ea78d

src/com/android/settings/wifi/WifiWakeupPreferenceController.java

@@ -97,15 +97,22 @@ public class WifiWakeupPreferenceController extends AbstractPreferenceController
             return false;
         }
 
-        if (!mLocationManager.isLocationEnabled()) {
+        // TODO(b/132391311): WifiWakeupPreferenceController is essentially reimplementing
-            final Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
+        // TogglePreferenceController. Refactor it into TogglePreferenceController.
-            mFragment.startActivity(intent);
+
-        } else if (getWifiWakeupEnabled()) {
+        // Toggle wifi-wakeup setting between 1/0 based on its current state, and some other checks.
+        if (isWifiWakeupAvailable()) {
             setWifiWakeupEnabled(false);
-        } else if (!getWifiScanningEnabled()) {
-            showScanningDialog();
         } else {
-            setWifiWakeupEnabled(true);
+            if (!mLocationManager.isLocationEnabled()) {
+                final Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
+                mFragment.startActivityForResult(intent, WIFI_WAKEUP_REQUEST_CODE);
+                return true;
+            } else if (!getWifiScanningEnabled()) {
+                showScanningDialog();
+            } else {
+                setWifiWakeupEnabled(true);
+            }
         }
 
         updateState(mPreference);
@@ -124,9 +131,7 @@ public class WifiWakeupPreferenceController extends AbstractPreferenceController
         }
         final SwitchPreference enableWifiWakeup = (SwitchPreference) preference;
 
-        enableWifiWakeup.setChecked(getWifiWakeupEnabled()
+        enableWifiWakeup.setChecked(isWifiWakeupAvailable());
-                && getWifiScanningEnabled()
-                && mLocationManager.isLocationEnabled());
         if (!mLocationManager.isLocationEnabled()) {
             preference.setSummary(getNoLocationSummary());
         } else {
@@ -145,7 +150,7 @@ public class WifiWakeupPreferenceController extends AbstractPreferenceController
         if (requestCode != WIFI_WAKEUP_REQUEST_CODE) {
             return;
         }
-        if (mLocationManager.isLocationEnabled()) {
+        if (mLocationManager.isLocationEnabled() && getWifiScanningEnabled()) {
             setWifiWakeupEnabled(true);
         }
         updateState(mPreference);
@@ -168,6 +173,15 @@ public class WifiWakeupPreferenceController extends AbstractPreferenceController
                 Settings.Global.WIFI_WAKEUP_ENABLED, 0) == 1;
     }
 
+    /**
+     * Wifi wakeup is available only when both location and Wi-Fi scanning are enabled.
+     */
+    private boolean isWifiWakeupAvailable() {
+        return getWifiWakeupEnabled()
+                && getWifiScanningEnabled()
+                && mLocationManager.isLocationEnabled();
+    }
+
     private void setWifiWakeupEnabled(boolean enabled) {
         Settings.Global.putInt(mContext.getContentResolver(), Settings.Global.WIFI_WAKEUP_ENABLED,
                 enabled ? 1 : 0);

tests/robotests/src/com/android/settings/wifi/WifiWakeupPreferenceControllerTest.java

@@ -22,6 +22,7 @@ import static android.provider.Settings.Global.WIFI_WAKEUP_ENABLED;
 import static com.google.common.truth.Truth.assertThat;
 
 import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.times;
 
 import android.content.Context;
 import android.location.LocationManager;
@@ -95,6 +96,19 @@ public class WifiWakeupPreferenceControllerTest {
                 .isEqualTo(1);
     }
 
+    @Test
+    public void handlePreferenceTreeClick_wifiWakeupEnableScanningDisable_wifiWakeupEnable() {
+        Settings.Global.putInt(mContext.getContentResolver(), WIFI_WAKEUP_ENABLED, 1);
+        Settings.Global.putInt(mContext.getContentResolver(), WIFI_SCAN_ALWAYS_AVAILABLE, 0);
+        doReturn(true).when(mLocationManager).isLocationEnabled();
+
+        mController.handlePreferenceTreeClick(mPreference);
+        final boolean isWifiWakeupEnabled = Settings.Global.getInt(mContext.getContentResolver(),
+                Settings.Global.WIFI_WAKEUP_ENABLED, 0) == 1;
+
+        assertThat(isWifiWakeupEnabled).isTrue();
+    }
+
     @Test
     public void updateState_preferenceSetCheckedWhenWakeupSettingEnabled() {
         final SwitchPreference preference = new SwitchPreference(mContext);