Merge "Grey out scrolling speed slider bar" into main

package com.android.settings.inputmethod;

import android.content.ContentResolver;

import android.content.Context;

import android.database.ContentObserver;

import android.hardware.input.InputSettings;

import android.os.Handler;

import android.os.Looper;

import android.provider.Settings;

import androidx.annotation.NonNull;

import androidx.annotation.Nullable;

import androidx.preference.Preference;

import androidx.preference.PreferenceScreen;

import com.android.settings.core.SliderPreferenceController;

import com.android.settings.widget.SeekBarPreference;

import com.android.settingslib.core.lifecycle.LifecycleObserver;

import com.android.settingslib.core.lifecycle.events.OnStart;

import com.android.settingslib.core.lifecycle.events.OnStop;

public class MouseScrollingSpeedPreferenceController extends SliderPreferenceController {

public class MouseScrollingSpeedPreferenceController extends SliderPreferenceController implements

        Preference.OnPreferenceChangeListener, LifecycleObserver, OnStop, OnStart  {

    private final ContentResolver mContentResolver;

    private final ContentObserver mContentObserver;

    @Nullable

    private SeekBarPreference mPreference;

    public MouseScrollingSpeedPreferenceController(@NonNull Context context, @NonNull String key) {

        super(context, key);

        mContentResolver = context.getContentResolver();

        mContentObserver = new ContentObserver(new Handler(Looper.getMainLooper())) {

            @Override

            public void onChange(boolean selfChange) {

                updateAvailabilityStatus();

            }

        };

    }

    @Override

    public void displayPreference(@NonNull PreferenceScreen screen) {

        super.displayPreference(screen);

        SeekBarPreference preference = screen.findPreference(getPreferenceKey());

        preference.setMax(getMax());

        preference.setMin(getMin());

        preference.setProgress(getSliderPosition());

        updateState(preference);

        mPreference = screen.findPreference(getPreferenceKey());

        mPreference.setMax(getMax());

        mPreference.setMin(getMin());

        mPreference.setProgress(getSliderPosition());

        updateState(mPreference);

    }

    @Override

        if (!InputSettings.isMouseScrollingAccelerationFeatureFlagEnabled()) {

            return UNSUPPORTED_ON_DEVICE;

        }

        return AVAILABLE;

        return shouldEnableSlideBar() ? AVAILABLE : DISABLED_DEPENDENT_SETTING;

    }

    @Override

    public int getMax() {

        return InputSettings.MAX_MOUSE_SCROLLING_SPEED;

    }

    /**

     * Returns whether the mouse scrolling speed slide bar should allow users to customize or not.

     */

    public boolean shouldEnableSlideBar() {

        return !InputSettings.isMouseScrollingAccelerationEnabled(mContext);

    }

    @Override

    public void onStart() {

        mContentResolver.registerContentObserver(

                Settings.System.getUriFor(

                        Settings.System.MOUSE_SCROLLING_ACCELERATION),

                /* notifyForDescendants= */ false, mContentObserver);

    }

    @Override

    public void onStop() {

        mContentResolver.unregisterContentObserver(mContentObserver);

    }

    private void updateAvailabilityStatus() {

        if (mPreference != null) {

            mPreference.setEnabled(shouldEnableSlideBar());

        }

    }

}