[Physical Keyboard][A11y Page] Add Bounce keys dialog

1.Add dialog for adjust bounce key to different values.
demo video: b/346949547#comment24.
2.Update summary text.
3.When receive update from content uri, update toggle state directly.
4.Rename Controller to more suitable name.

Bug: 346949547
Test: atest SettingsRoboTests
Flag: com.android.settings.keyboard.keyboard_and_touchpad_a11y_new_page_enabled
Change-Id: I94d8d1a77528b13f59b2d67dfa30e17dd177e385

src/com/android/settings/inputmethod/InputSettingPreferenceController.java

@@ -0,0 +1,103 @@
+/*
+ * Copyright 2024 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.inputmethod;
+
+import static androidx.lifecycle.Lifecycle.Event.ON_PAUSE;
+import static androidx.lifecycle.Lifecycle.Event.ON_RESUME;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.database.ContentObserver;
+import android.net.Uri;
+import android.os.Handler;
+import android.os.UserHandle;
+
+import androidx.annotation.NonNull;
+import androidx.lifecycle.LifecycleObserver;
+import androidx.lifecycle.OnLifecycleEvent;
+import androidx.preference.Preference;
+
+import com.android.settings.core.TogglePreferenceController;
+import com.android.settings.keyboard.Flags;
+
+/**
+ * Abstract class for toggle controllers of Keyboard input setting related function.
+ */
+public abstract class InputSettingPreferenceController extends TogglePreferenceController implements
+        LifecycleObserver {
+    private final ContentResolver mContentResolver;
+    private final ContentObserver mContentObserver = new ContentObserver(new Handler(true)) {
+        @Override
+        public void onChange(boolean selfChange, Uri uri) {
+            if (getSettingUri().equals(uri)) {
+                onInputSettingUpdated();
+            }
+        }
+    };
+
+    protected abstract void onInputSettingUpdated();
+
+    protected abstract Uri getSettingUri();
+
+    public InputSettingPreferenceController(@NonNull Context context,
+            @NonNull String preferenceKey) {
+        super(context, preferenceKey);
+        mContentResolver = context.getContentResolver();
+    }
+
+    @Override
+    public void updateState(@NonNull Preference preference) {
+        super.updateState(preference);
+        refreshSummary(preference);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return Flags.keyboardAndTouchpadA11yNewPageEnabled() ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+    }
+
+    @Override
+    public int getSliceHighlightMenuRes() {
+        return 0;
+    }
+
+    /** Invoked when the panel is resumed. */
+    @OnLifecycleEvent(ON_RESUME)
+    public void onResume() {
+        registerSettingsObserver();
+    }
+
+    /** Invoked when the panel is paused. */
+    @OnLifecycleEvent(ON_PAUSE)
+    public void onPause() {
+        unregisterSettingsObserver();
+    }
+
+    private void registerSettingsObserver() {
+        unregisterSettingsObserver();
+        mContentResolver.registerContentObserver(
+                getSettingUri(),
+                false,
+                mContentObserver,
+                UserHandle.myUserId());
+        onInputSettingUpdated();
+    }
+
+    private void unregisterSettingsObserver() {
+        mContentResolver.unregisterContentObserver(mContentObserver);
+    }
+}