CompatHelper.java

/***************************************************************************************
 * Copyright (c) 2015 Timothy Rae <perceptualchaos2@gmail.com>                          *
 *                                                                                      *
 * This program is free software; you can redistribute it and/or modify it under        *
 * the terms of the GNU General Public License as published by the Free Software        *
 * Foundation; either version 3 of the License, or (at your option) any later           *
 * version.                                                                             *
 *                                                                                      *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY      *
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A      *
 * PARTICULAR PURPOSE. See the GNU General Public License for more details.             *
 *                                                                                      *
 * You should have received a copy of the GNU General Public License along with         *
 * this program.  If not, see <http://www.gnu.org/licenses/>.                           *
 ****************************************************************************************/

package com.ichi2.compat;


import android.content.Context;
import android.content.SharedPreferences;
import android.os.Build;
import android.preference.PreferenceManager;
import android.view.KeyCharacterMap;

public class CompatHelper {
    private static CompatHelper sInstance;
    private Compat mCompat;


    private CompatHelper() {

        if (isNookHdOrHdPlus() && getSdkVersion() == 15) {
            mCompat = new CompatV15NookHdOrHdPlus();
        } else if (getSdkVersion() >= 21) {
            mCompat = new CompatV21();
        } else if (getSdkVersion() >= 19) {
            mCompat = new CompatV19();
        } else if (getSdkVersion() >= 17) {
            mCompat = new CompatV17();
        } else if (getSdkVersion() >= 16) {
            mCompat = new CompatV16();
        } else if (getSdkVersion() >= 15) {
            mCompat = new CompatV15();
        } else if (getSdkVersion() >= 11) {
            mCompat = new CompatV11();
        } else if (getSdkVersion() >= 12) {
            mCompat = new CompatV12();
        } else {
            mCompat = new CompatV10();
        }
    }

    /** Get the current Android API level. */
    public static int getSdkVersion() {
        return Build.VERSION.SDK_INT;
    }


    /** Determine if the device is running API level 11 or higher. */
    public static boolean isHoneycomb() {
        return getSdkVersion() >= Build.VERSION_CODES.HONEYCOMB;
    }
    /** Determine if the device is running API level 21 or higher. */
    public static boolean isLollipop() {
        return getSdkVersion() >= Build.VERSION_CODES.LOLLIPOP;
    }
    /** Determine if the device is running API level 23 or higher. */
    public static boolean isMarshmallow() {
        return getSdkVersion() >= Build.VERSION_CODES.M;
    }

    /**
     * Main public method to get the compatibility class
     */
    public static Compat getCompat() {
        return getInstance().mCompat;
    }

    public static synchronized CompatHelper getInstance() {
        if (sInstance == null) {
            sInstance = new CompatHelper();
        }
        return sInstance;
    }

    private boolean isNookHdOrHdPlus() {
        return isNookHd() || isNookHdPlus();
    }

    private boolean isNookHdPlus() {
        return android.os.Build.BRAND.equals("NOOK") && android.os.Build.PRODUCT.equals("HDplus")
                && android.os.Build.DEVICE.equals("ovation");
    }

    private boolean isNookHd () {
        return android.os.Build.MODEL.equalsIgnoreCase("bntv400") && android.os.Build.BRAND.equals("NOOK");
    }


    public static boolean isNook() {
        return android.os.Build.MODEL.equalsIgnoreCase("nook") || android.os.Build.DEVICE.equalsIgnoreCase("nook");
    }


    public static boolean isChromebook() {
        return android.os.Build.BRAND.equalsIgnoreCase("chromium") || android.os.Build.MANUFACTURER.equalsIgnoreCase("chromium");
    }

    public static boolean isKindle() {
        return Build.BRAND.equalsIgnoreCase("amazon") || Build.MANUFACTURER.equalsIgnoreCase("amazon");
    }

    public static boolean hasKanaAndEmojiKeys() {
        return KeyCharacterMap.deviceHasKey(94) && KeyCharacterMap.deviceHasKey(95);
    }

    public static boolean hasScrollKeys() {
        return KeyCharacterMap.deviceHasKey(92) || KeyCharacterMap.deviceHasKey(93);
    }

    public static void removeHiddenPreferences(Context context) {
        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
        if (isHoneycomb()){
            preferences.edit().remove("longclickWorkaround").commit();
        }
        if (getSdkVersion() >= 13) {
            preferences.edit().remove("safeDisplay").commit();
        }
        if (getSdkVersion() >= 15) {
            preferences.edit().remove("inputWorkaround").commit();
        }
        if (getSdkVersion() >= 16) {
            preferences.edit().remove("fixHebrewText").commit();
        }
    }
}