Add 'Stay unlocked on fold' toogle to settings

Added 'Stay unlocked on fold' toogle to display settings. Enabling this
setting will allow user to keep their device awake after the fold the
device.

Test: atest StayAwakeOnFoldPreferenceControllerTest LogicalDisplayMapperTest
Test: manual
  Built and flashed foldable device and manually tested by
    1. unfolded device -> enable setting -> folded device
    2. unfolded device -> disabled setting -> folded devices
  Built and flashed non-foldable device and manually tested by
    1. Went to Settings -> display -> the toogle setting is not visible
Bug: 274447767
Change-Id: I35fbd0f5d1297ee6e14896e8f3be8301cda6622f

src/com/android/settings/display/StayAwakeOnFoldPreferenceController.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.display;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.provider.Settings;
+
+import com.android.settings.R;
+import com.android.settings.core.TogglePreferenceController;
+
+/**
+ * A preference controller for the "Stay unlocked on fold" setting.
+ *
+ * This preference controller allows users to control whether or not the device
+ * stays awake when it is folded. When this setting is enabled, the device will
+ * stay awake even if the device is folded.
+ *
+ * @link android.provider.Settings.System#STAY_AWAKE_ON_FOLD
+ */
+public class StayAwakeOnFoldPreferenceController extends TogglePreferenceController {
+
+    private final Resources mResources;
+
+    public StayAwakeOnFoldPreferenceController(Context context, String key) {
+        this(context, key, context.getResources());
+    }
+
+    public StayAwakeOnFoldPreferenceController(Context context, String key, Resources resources) {
+        super(context, key);
+        mResources = resources;
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return mResources.getBoolean(R.bool.config_stay_awake_on_fold) ? AVAILABLE
+                : UNSUPPORTED_ON_DEVICE;
+    }
+
+    @Override
+    public boolean isChecked() {
+        return Settings.System.getInt(
+                mContext.getContentResolver(),
+                Settings.System.STAY_AWAKE_ON_FOLD,
+                0) == 1;
+    }
+
+    @Override
+    public boolean setChecked(boolean isChecked) {
+        final int stayUnlockedOnFold = isChecked ? 1 : 0;
+
+        return Settings.System.putInt(mContext.getContentResolver(),
+                Settings.System.STAY_AWAKE_ON_FOLD, stayUnlockedOnFold);
+    }
+
+    @Override
+    public int getSliceHighlightMenuRes() {
+        return R.string.menu_key_display;
+    }
+
+}