Refactor AccessibilityControlTimeoutPreferenceFragment to improve maintainability

Root cause: There is a bunch of different logic of preferences in AccessibilityControlTimeoutPreferenceFragment. It’s hard to implement new features and hard to maintain and hard to be testable.
Solution: Move out logic of AccessibilityControlTimeoutPreferenceFragment into controllers to reduce the complexity of the relationship between preference and fragment.

Bug: 197695932
Test: make RunSettingsRoboTests ROBOTEST_FILTER=com.android.settings.accessibility
Change-Id: I22e6e3b9e2f199ac1721fc069690321ad5f7a0d4

src/com/android/settings/accessibility/AccessibilityTimeoutUtils.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2022 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.accessibility;
+
+import android.content.ContentResolver;
+import android.provider.Settings;
+
+import com.google.common.primitives.Ints;
+
+/** Provides utility methods to accessibility timeout. */
+public final class AccessibilityTimeoutUtils {
+
+    /**
+     * Gets accessibility control timeout value.
+     *
+     * @param resolver the resolver to use
+     * @return accessibility control timeout value
+     */
+    public static int getSecureAccessibilityTimeoutValue(ContentResolver resolver) {
+        final String timeOutSec = Settings.Secure.getString(resolver,
+                Settings.Secure.ACCESSIBILITY_INTERACTIVE_UI_TIMEOUT_MS);
+        if (timeOutSec == null) {
+            return 0;
+        }
+        Integer timeOutValue = Ints.tryParse(timeOutSec);
+        return timeOutValue == null ? 0 : timeOutValue;
+    }
+
+    private AccessibilityTimeoutUtils(){}
+}