Read autoclick delay from settings

package com.android.server.accessibility;

import android.annotation.NonNull;

import android.content.ContentResolver;

import android.content.Context;

import android.database.ContentObserver;

import android.net.Uri;

import android.os.Handler;

import android.os.SystemClock;

import android.os.UserHandle;

import android.provider.Settings;

import android.util.Slog;

import android.view.InputDevice;

import android.view.KeyEvent;

import android.view.MotionEvent;

 * the class should handle cases where multiple mouse devices are present.

 */

public class AutoclickController implements EventStreamTransformation {

    private static final String LOG_TAG = AutoclickController.class.getSimpleName();

    // TODO: Control click delay via settings.

    private static final int CLICK_DELAY_MS = 600;

    public static final int DEFAULT_CLICK_DELAY_MS = 600;

    private static final String LOG_TAG = AutoclickController.class.getSimpleName();

    private EventStreamTransformation mNext;

    private Context mContext;

    private final Context mContext;

    // Lazily created on the first mouse motion event.

    private ClickScheduler mClickScheduler;

    private ClickDelayObserver mClickDelayObserver;

    public AutoclickController(Context context) {

        mContext = context;

        if (event.isFromSource(InputDevice.SOURCE_MOUSE)) {

            if (mClickScheduler == null) {

                Handler handler = new Handler(mContext.getMainLooper());

                mClickScheduler = new ClickScheduler(handler, CLICK_DELAY_MS);

                mClickScheduler = new ClickScheduler(handler, DEFAULT_CLICK_DELAY_MS);

                mClickDelayObserver = new ClickDelayObserver(handler);

                mClickDelayObserver.start(mContext.getContentResolver(), mClickScheduler);

            }

            handleMouseMotion(event, policyFlags);

    @Override

    public void onDestroy() {

        if (mClickDelayObserver != null) {

            mClickDelayObserver.stop();

            mClickDelayObserver = null;

        }

        if (mClickScheduler != null) {

            mClickScheduler.cancel();

            mClickScheduler = null;

        }

    }

        }

    }

    /**

     * Observes setting value for autoclick delay, and updates ClickScheduler delay whenever the

     * setting value changes.

     */

    final private static class ClickDelayObserver extends ContentObserver {

        /** URI used to identify the autoclick delay setting with content resolver. */

        private final Uri mAutoclickDelaySettingUri = Settings.Secure.getUriFor(

                Settings.Secure.ACCESSIBILITY_AUTOCLICK_DELAY);

        private ContentResolver mContentResolver;

        private ClickScheduler mClickScheduler;

        public ClickDelayObserver(Handler handler) {

            super(handler);

        }

        /**

         * Starts the observer. And makes sure up-to-date autoclick delay is propagated to

         * |clickScheduler|.

         *

         * @param contentResolver Content resolver that should be observed for setting's value

         *     changes.

         * @param clickScheduler ClickScheduler that should be updated when click delay changes.

         * @throws IllegalStateException If internal state is already setup when the method is

         *         called.

         * @throws NullPointerException If any of the arguments is a null pointer.

         */

        public void start(@NonNull ContentResolver contentResolver,

                @NonNull ClickScheduler clickScheduler) {

            if (mContentResolver != null || mClickScheduler != null) {

                throw new IllegalStateException("Observer already started.");

            }

            if (contentResolver == null) {

                throw new NullPointerException("contentResolver not set.");

            }

            if (clickScheduler == null) {

                throw new NullPointerException("clickScheduler not set.");

            }

            mContentResolver = contentResolver;

            mClickScheduler = clickScheduler;

            mContentResolver.registerContentObserver(mAutoclickDelaySettingUri, false, this,

                    UserHandle.USER_ALL);

            // Initialize mClickScheduler's initial delay value.

            onChange(true, mAutoclickDelaySettingUri);

        }

        /**

         * Stops the the observer. Should only be called if the observer has been started.

         *

         * @throws IllegalStateException If internal state hasn't yet been initialized by calling

         *         {@link #start}.

         */

        public void stop() {

            if (mContentResolver == null || mClickScheduler == null) {

                throw new IllegalStateException("ClickDelayObserver not started.");

            }

            mContentResolver.unregisterContentObserver(this);

        }

        @Override

        public void onChange(boolean selfChange, Uri uri) {

            if (mAutoclickDelaySettingUri.equals(uri)) {

                // TODO: Plumb current user id down to here and use getIntForUser.

                int delay = Settings.Secure.getInt(

                        mContentResolver, Settings.Secure.ACCESSIBILITY_AUTOCLICK_DELAY,

                        DEFAULT_CLICK_DELAY_MS);

                mClickScheduler.updateDelay(delay);

            }

        }

    }

    /**

     * Schedules and performs click event sequence that should be initiated when mouse pointer stops

     * moving. The click is first scheduled when a mouse movement is detected, and then further

            mMetaState = state;

        }

        /**

         * Updates delay that should be used when scheduling clicks. The delay will be used only for

         * clicks scheduled after this point (pending click tasks are not affected).

         * @param delay New delay value.

         */

        public void updateDelay(int delay) {

            mDelay = delay;

        }

        /**

         * Updates the time at which click sequence should occur.

         *