PawletOS/app_Settings
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fix logic used for auto time zone settings

Browse Source 
Fix the logic used that determines whether the automatic time
zone detection toggle is available in the Settings UI Date & Time
screen. Also, ensure that the TimeZonePreferenceController uses correct
logic for whether the user can manually enter a time zone.

This change migrates the controllers to use a existing high-level
TimeManager API rather than (incorrectly) duplicating in Settings UI the
logic for whether time zone detection is supported / enabled.

Without this change, WiFi-only devices _with_ location-based time zone
detection enabled would incorrectly hide the "auto time zone" toggle,
which would have the knock-on of making it look like the user is allowed
to enter a time zone manually when they aren't (because it is
enabled/disabled based on the presence of the toggle).

That toggle still needs to be present while there is a possible time
zone detection mechanism. All the (quite complex) logic around this is
already considered by the TimeManager API.

Possible side effects:

This change decouples the "does the toggle show true or false?"
(isEnabled()) from the "should the toggle be shown at all?"
(isAvailable()) logic by removing a call to isAvailable() inside of
isEnabled(). This is to avoid making multiple (probably more expensive
than what it was doing before) calls to the time_zone_detector service,
and avoid the extra complexity of caching / cache invalidation that
would be needed to mitigate it. Previously, as a result of the call to
isAvailable(), isEnabled() would always return false when mIsFromSUW is
true, but now it will return the underlying value of the device's
auto_time_zone setting. This means that if the UI is changed in future
to render a visible-but-can't-be-changed-by-the-user toggle for auto
time zone, it will display the current setting value, which is perfectly
reasonable.  It is assumed it will have no other side effects.

The AutoTimeZonePreferenceControllerTest.isFromSUW_notEnable test has
been changed to reflect the change in behavior. Various name changes
made to tests to reflect the new behavior.

Bug: 228247623
Bug: 186625820
Bug: 172891783
Test: treehugger
Test: Manual test on a device with telephony
Test: m ROBOTEST_FILTER=AutoTimeZonePreferenceControllerTest RunSettingsRoboTests -j40
Test: m ROBOTEST_FILTER=TimeZonePreferenceControllerTest RunSettingsRoboTests -j40
Change-Id: I4c7608e8645eee5994c8ecf85a14a27d3278ac04
This commit is contained in:
Neil Fuller
2022-04-12 17:37:06 +01:00
parent 4bf619c429
commit 7a8ac683d4
5 changed files with 234 additions and 63 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
src/com/android/settings/datetime/TimeZonePreferenceController.java
View File

@@ -16,6 +16,10 @@
package com.android.settings.datetime;
import static android.app.time.Capabilities.CAPABILITY_POSSESSED;
import android.app.time.TimeManager;
import android.app.time.TimeZoneCapabilities;
import android.content.Context;
import androidx.annotation.VisibleForTesting;
@@ -33,12 +37,11 @@ public class TimeZonePreferenceController extends AbstractPreferenceController
private static final String KEY_TIMEZONE = "timezone";
private final AutoTimeZonePreferenceController mAutoTimeZonePreferenceController;
private final TimeManager mTimeManager;
public TimeZonePreferenceController(Context context,
AutoTimeZonePreferenceController autoTimeZonePreferenceController) {
public TimeZonePreferenceController(Context context) {
super(context);
mAutoTimeZonePreferenceController = autoTimeZonePreferenceController;
mTimeManager = context.getSystemService(TimeManager.class);
}
@Override
@@ -47,8 +50,9 @@ public class TimeZonePreferenceController extends AbstractPreferenceController
return;
}
preference.setSummary(getTimeZoneOffsetAndName());
if( !((RestrictedPreference) preference).isDisabledByAdmin()) {
preference.setEnabled(!mAutoTimeZonePreferenceController.isEnabled());
if (!((RestrictedPreference) preference).isDisabledByAdmin()) {
boolean enableManualTimeZoneSelection = shouldEnableManualTimeZoneSelection();
preference.setEnabled(enableManualTimeZoneSelection);
}
}
@@ -68,4 +72,12 @@ public class TimeZonePreferenceController extends AbstractPreferenceController
return ZoneGetter.getTimeZoneOffsetAndName(mContext,
now.getTimeZone(), now.getTime());
}
private boolean shouldEnableManualTimeZoneSelection() {
TimeZoneCapabilities timeZoneCapabilities =
mTimeManager.getTimeZoneCapabilitiesAndConfig().getCapabilities();
int suggestManualTimeZoneCapability =
timeZoneCapabilities.getSuggestManualTimeZoneCapability();
return suggestManualTimeZoneCapability == CAPABILITY_POSSESSED;
}
}