WifiController: Enable softap toggle in airplane mode

Wifi tethering should work even in airplane mode. So, remove
the restriction in WifiController which prevents enabling SoftAp in
airplane mode. There is no FCC or carrier requirements to disable SoftAp
in airplane mode. LTE tethering would obviously disabled because the
mobile radio is off in airplane mode.

Note: We need some UI changes for this to be available to the users
(details mentioned in the associated bug).

Bug: 111681176
Test: Unit tests
Test: Added a new ACTS test which toggle softap state after turning on
airplane mode.

Change-Id: Ie67b1de1d31615a75683c1e91290e647eaae809c

1 files changed, 20 insertions, 0 deletions

diff --git a/tests/wifitests/src/com/android/server/wifi/WifiControllerTest.java b/tests/wifitests/src/com/android/server/wifi/WifiControllerTest.java
index f40875624..f07a256a4 100644
--- a/tests/wifitests/src/com/android/server/wifi/WifiControllerTest.java
+++ b/tests/wifitests/src/com/android/server/wifi/WifiControllerTest.java
@@ -829,6 +829,25 @@ public class WifiControllerTest {
     }
 
     /**
+     * Toggling softap mode when in airplane mode needs to enable softap
+     */
+    @Test
+    public void testSoftApModeToggleWhenInAirplaneMode() throws Exception {
+        // Test with airplane mode turned on:
+        when(mSettingsStore.isAirplaneModeOn()).thenReturn(true);
+
+        // Turn on SoftAp.
+        mWifiController.sendMessage(CMD_SET_AP, 1);
+        mLooper.dispatchAll();
+        verify(mActiveModeWarden).enterSoftAPMode(any());
+
+        // Turn off SoftAp.
+        mWifiController.sendMessage(CMD_SET_AP, 0);
+        mLooper.dispatchAll();
+        verify(mActiveModeWarden).stopSoftAPMode();
+    }
+
+    /**
      * Toggling off scan mode when in ECM does not induce a mode change
      */
     @Test
@@ -850,6 +869,7 @@ public class WifiControllerTest {
 
         verifyNoMoreInteractions(mActiveModeWarden);
     }
+
     /**
      * Toggling off client mode when in ECM does not induce a mode change
      */