2 * Copyright © 2021 Damyan Ivanov.
3 * This file is part of MoLe.
4 * MoLe is free software: you can distribute it and/or modify it
5 * under the term of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your opinion), any later version.
9 * MoLe is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License terms for details.
14 * You should have received a copy of the GNU General Public License
15 * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
18 package net.ktnx.mobileledger.utils;
20 import android.app.Activity;
21 import android.content.res.Configuration;
22 import android.os.Handler;
23 import android.os.Looper;
24 import android.text.Editable;
25 import android.view.WindowManager;
27 import androidx.annotation.Nullable;
28 import androidx.fragment.app.Fragment;
29 import androidx.fragment.app.FragmentActivity;
31 import org.jetbrains.annotations.Contract;
34 public static final char ZERO_WIDTH_SPACE = '\u200B';
35 public static boolean isZero(float f) {
36 return (f < 0.005) && (f > -0.005);
38 public static boolean equalFloats(float a, float b) { return isZero(a - b); }
39 public static void showSoftKeyboard(Activity activity) {
40 // make the keyboard appear
41 Configuration cf = activity.getResources()
43 if (cf.keyboard == Configuration.KEYBOARD_NOKEYS ||
44 cf.keyboardHidden == Configuration.KEYBOARDHIDDEN_YES)
46 .setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
48 public static void showSoftKeyboard(Fragment fragment) {
49 final FragmentActivity activity = fragment.getActivity();
51 showSoftKeyboard(activity);
53 public static void hideSoftKeyboard(Fragment fragment) {
54 final FragmentActivity activity = fragment.getActivity();
56 hideSoftKeyboard(activity);
58 public static void hideSoftKeyboard(Activity activity) {
59 Configuration cf = activity.getResources()
61 if (cf.keyboard == Configuration.KEYBOARD_NOKEYS ||
62 cf.keyboardHidden == Configuration.KEYBOARDHIDDEN_NO)
64 .setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN);
67 public static String emptyIsNull(String str) {
68 return str != null && str.isEmpty() ? null : str;
70 public static String nullIsEmpty(String str) {
71 return (str == null) ? "" : str;
73 public static String nullIsEmpty(Editable e) {
78 public static boolean equalStrings(String u, CharSequence text) {
79 return nullIsEmpty(u).equals(text.toString());
81 public static boolean equalStrings(String a, String b) {
82 return nullIsEmpty(a).equals(nullIsEmpty(b));
84 public static String trim(@Nullable String string) {
90 @Contract(value = "null, null -> true; null, !null -> false; !null, null -> false", pure = true)
91 public static boolean equalIntegers(Integer a, Integer b) {
92 if (a == null && b == null)
94 if (a == null || b == null)
99 @Contract(value = "null, null -> true; null, !null -> false; !null, null -> false", pure = true)
100 public static boolean equalLongs(Long a, Long b) {
101 if (a == null && b == null)
103 if (a == null || b == null)
108 public static void onMainThread(Runnable r) {
109 new Handler(Looper.getMainLooper()).post(r);
111 public static String addWrapHints(String input) {
114 StringBuilder result = new StringBuilder();
116 int pos = input.indexOf(':');
119 result.append(input.substring(lastPos, pos + 1))
120 .append(ZERO_WIDTH_SPACE);
122 pos = input.indexOf(':', lastPos + 1);
125 result.append(input.substring(lastPos));
127 return result.toString();