[Physical Keyboard] Add main page for Repeat keys

Page markup: https://screenshot.googleplex.com/5xCd2wVVyXajdCB.png

Test: atest SettingsRoboTests
Bug: 345399212
Flag: com.android.input.flags.keyboard_repeat_keys
Change-Id: Ie60f4b6ea4de973644103c0aa0bcdfe9a1e758eb

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

@@ -0,0 +1,170 @@
+/*
+ * 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 com.android.settings.inputmethod.PhysicalKeyboardFragment.getHardKeyboards;
+
+import android.app.settings.SettingsEnums;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.database.ContentObserver;
+import android.hardware.input.InputManager;
+import android.hardware.input.InputSettings;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.UserHandle;
+import android.provider.Settings;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import com.android.internal.util.Preconditions;
+import com.android.settings.R;
+import com.android.settings.dashboard.DashboardFragment;
+import com.android.settings.keyboard.Flags;
+import com.android.settings.search.BaseSearchIndexProvider;
+import com.android.settings.widget.LabeledSeekBarPreference;
+import com.android.settingslib.utils.ThreadUtils;
+
+import java.util.List;
+
+public class KeyboardRepeatKeysMainFragment extends DashboardFragment
+        implements InputManager.InputDeviceListener {
+    private static final String TAG = "RepeatKeysMainFragment";
+    private static final String TIME_OUT_KEY = "repeat_keys_timeout_preference";
+    private static final String DELAY_KEY = "repeat_keys_delay_preference";
+
+    private final Uri mRepeatKeyUri = Settings.Secure.getUriFor(
+            Settings.Secure.KEY_REPEAT_ENABLED);
+    private final ContentObserver mContentObserver = new ContentObserver(new Handler(true)) {
+        @Override
+        public void onChange(boolean selfChange, Uri uri) {
+            if (mRepeatKeyUri.equals(uri)) {
+                updatePreferencesState();
+            }
+        }
+    };
+    private InputManager mInputManager;
+    private ContentResolver mContentResolver;
+    @Nullable
+    private LabeledSeekBarPreference mRepeatTimeoutPreference;
+    @Nullable
+    private LabeledSeekBarPreference mRepeatDelayPreference;
+
+    @Override
+    public int getMetricsCategory() {
+        return SettingsEnums.PHYSICAL_KEYBOARD_A11Y;
+    }
+
+    @Override
+    public void onAttach(@NonNull Context context) {
+        super.onAttach(context);
+        mInputManager = Preconditions.checkNotNull(getActivity()
+                .getSystemService(InputManager.class));
+        mContentResolver = context.getContentResolver();
+    }
+
+    @Override
+    public void onCreatePreferences(Bundle bundle, String s) {
+        super.onCreatePreferences(bundle, s);
+        mRepeatTimeoutPreference = findPreference(TIME_OUT_KEY);
+        mRepeatDelayPreference = findPreference(DELAY_KEY);
+        updatePreferencesState();
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        finishEarlyIfNeeded();
+        mInputManager.registerInputDeviceListener(this, null);
+        registerSettingsObserver();
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        mInputManager.unregisterInputDeviceListener(this);
+        unregisterSettingsObserver();
+    }
+
+    @Override
+    protected String getLogTag() {
+        return TAG;
+    }
+
+    @Override
+    protected int getPreferenceScreenResId() {
+        return R.xml.repeat_key_main_page;
+    }
+
+    private void updatePreferencesState() {
+        boolean isRepeatKeyEnabled = InputSettings.isRepeatKeysEnabled(getContext());
+        if (mRepeatTimeoutPreference != null && mRepeatDelayPreference != null) {
+            mRepeatTimeoutPreference.setEnabled(isRepeatKeyEnabled);
+            mRepeatDelayPreference.setEnabled(isRepeatKeyEnabled);
+        }
+    }
+
+    private void registerSettingsObserver() {
+        unregisterSettingsObserver();
+        mContentResolver.registerContentObserver(
+                mRepeatKeyUri,
+                false,
+                mContentObserver,
+                UserHandle.myUserId());
+    }
+
+    private void unregisterSettingsObserver() {
+        mContentResolver.unregisterContentObserver(mContentObserver);
+    }
+
+    @Override
+    public void onInputDeviceAdded(int deviceId) {
+        finishEarlyIfNeeded();
+    }
+
+    @Override
+    public void onInputDeviceRemoved(int deviceId) {
+        finishEarlyIfNeeded();
+    }
+
+    @Override
+    public void onInputDeviceChanged(int deviceId) {
+        finishEarlyIfNeeded();
+    }
+
+    private void finishEarlyIfNeeded() {
+        final Context context = getContext();
+        ThreadUtils.postOnBackgroundThread(() -> {
+            final List<PhysicalKeyboardFragment.HardKeyboardDeviceInfo> newHardKeyboards =
+                    getHardKeyboards(context);
+            if (newHardKeyboards.isEmpty()) {
+                getActivity().finish();
+            }
+        });
+    }
+
+    public static final BaseSearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
+            new BaseSearchIndexProvider(R.xml.repeat_key_main_page) {
+                @Override
+                protected boolean isPageSearchEnabled(Context context) {
+                    return Flags.keyboardAndTouchpadA11yNewPageEnabled()
+                            && !getHardKeyboards(context).isEmpty();
+                }
+            };
+}