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Display: make Colors settings entry preference reactive

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Added `display_color_mode` listener to Colors preference. As a result,
it becomes reactive and updates its color mode value summary.

Flag: EXEMPT minor change
Bug: 397659800
Test: changed color mode using `adb` commands and verify that Colors
summary reacts and print correct color mode

Change-Id: I963768e3dbb43b547ec53e6445b2791ec0f57cff
This commit is contained in:
Vadym Omelnytskyi
2025-02-20 01:49:48 +00:00
parent a8f1da6994
commit cc96950d12
2 changed files with 102 additions and 3 deletions
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45
src/com/android/settings/display/ColorModePreferenceController.java
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@@ -14,15 +14,37 @@
package com.android.settings.display;
import android.content.Context;
import android.database.ContentObserver;
import android.hardware.display.ColorDisplayManager;
import android.net.Uri;
import android.os.Handler;
import android.os.Looper;
import android.provider.Settings;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.lifecycle.Lifecycle;
import androidx.lifecycle.LifecycleObserver;
import androidx.lifecycle.OnLifecycleEvent;
import androidx.preference.Preference;
import androidx.preference.PreferenceScreen;
import com.android.settings.core.BasePreferenceController;
public class ColorModePreferenceController extends BasePreferenceController {
public class ColorModePreferenceController extends BasePreferenceController
implements LifecycleObserver {
private Preference mPreference;
private final ContentObserver mContentObserver = new ContentObserver(
new Handler(Looper.getMainLooper())) {
@Override
public void onChange(boolean selfChange, @Nullable Uri uri) {
if (mPreference != null) {
updateState(mPreference);
}
}
};
public ColorModePreferenceController(@NonNull Context context, @NonNull String key) {
super(context, key);
@@ -36,11 +58,32 @@ public class ColorModePreferenceController extends BasePreferenceController {
AVAILABLE : DISABLED_FOR_USER;
}
@OnLifecycleEvent(Lifecycle.Event.ON_RESUME)
public void onResume() {
mContext.getContentResolver().registerContentObserver(
Settings.System.getUriFor(Settings.System.DISPLAY_COLOR_MODE),
/* notifyForDescendants= */ false,
mContentObserver);
}
@OnLifecycleEvent(Lifecycle.Event.ON_PAUSE)
public void onPause() {
mContext.getContentResolver().unregisterContentObserver(mContentObserver);
}
@Override
public CharSequence getSummary() {
return getColorModeName();
}
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
mPreference = screen.findPreference(getPreferenceKey());
if (mPreference != null) {
updateState(mPreference);
}
}
@Override
public void updateState(@Nullable Preference preference) {
if (preference == null) {