Java tutorial
/* * Twidere - Twitter client for Android * * Copyright (C) 2012-2014 Mariotaku Lee <mariotaku.lee@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 org.mariotaku.twidere.util; import android.content.Context; import android.content.SharedPreferences; import android.content.SharedPreferences.OnSharedPreferenceChangeListener; import android.graphics.Color; import android.support.v4.util.LongSparseArray; import org.mariotaku.twidere.TwidereConstants; import org.mariotaku.twidere.app.TwidereApplication; import org.mariotaku.twidere.model.ParcelableStatus; import org.mariotaku.twidere.model.ParcelableUser; import org.mariotaku.twidere.model.ParcelableUserList; import java.util.Map; import java.util.Set; import twitter4j.User; import static android.text.TextUtils.isEmpty; public class UserColorNameManager implements TwidereConstants { private final LongSparseArray<Integer> mUserColors = new LongSparseArray<>(); private final LongSparseArray<String> mUserNicknames = new LongSparseArray<>(); private final SharedPreferences mColorPreferences, mNicknamePreferences; public UserColorNameManager(Context context) { mColorPreferences = context.getSharedPreferences(USER_COLOR_PREFERENCES_NAME, Context.MODE_PRIVATE); mNicknamePreferences = context.getSharedPreferences(USER_NICKNAME_PREFERENCES_NAME, Context.MODE_PRIVATE); } public static void registerOnUserColorChangedListener(final Context context, final OnUserColorChangedListener listener) { final SharedPreferences prefs = context.getSharedPreferences(USER_COLOR_PREFERENCES_NAME, Context.MODE_PRIVATE); prefs.registerOnSharedPreferenceChangeListener(new OnColorPreferenceChangeListener(listener)); } public static void registerOnUserNicknameChangedListener(final Context context, final OnUserNicknameChangedListener listener) { final SharedPreferences prefs = context.getSharedPreferences(USER_NICKNAME_PREFERENCES_NAME, Context.MODE_PRIVATE); prefs.registerOnSharedPreferenceChangeListener(new OnNickPreferenceChangeListener(listener)); } public static UserColorNameManager getInstance(Context context) { final TwidereApplication application = TwidereApplication.getInstance(context); return application.getUserColorNameManager(); } public void clearUserColor(final long userId) { if (userId < 0) return; mUserColors.remove(userId); final SharedPreferences.Editor editor = mColorPreferences.edit(); editor.remove(Long.toString(userId)); editor.apply(); } public void setUserColor(final long userId, final int color) { if (userId < 0) return; mUserColors.put(userId, color); final SharedPreferences.Editor editor = mColorPreferences.edit(); editor.putInt(String.valueOf(userId), color); editor.apply(); } public void setUserNickname(final long userId, final String nickname) { if (userId < 0) return; mUserNicknames.put(userId, nickname); final SharedPreferences.Editor editor = mNicknamePreferences.edit(); editor.putString(String.valueOf(userId), nickname); editor.apply(); } public void clearUserNickname(final long userId) { if (userId < 0) return; mUserNicknames.remove(userId); final SharedPreferences.Editor editor = mNicknamePreferences.edit(); editor.remove(Long.toString(userId)); editor.apply(); } public String getDisplayName(final ParcelableUser user, final boolean nameFirst, final boolean ignoreCache) { return getDisplayName(user.id, user.name, user.screen_name, nameFirst, ignoreCache); } @Deprecated public String getDisplayName(final User user, final boolean nameFirst, final boolean ignoreCache) { return getDisplayName(user.getId(), user.getName(), user.getScreenName(), nameFirst, ignoreCache); } public String getDisplayName(final ParcelableUserList user, final boolean nameFirst, final boolean ignoreCache) { return getDisplayName(user.user_id, user.user_name, user.user_screen_name, nameFirst, ignoreCache); } public String getDisplayName(final ParcelableStatus status, final boolean nameFirst, final boolean ignoreCache) { return getDisplayName(status.user_id, status.user_name, status.user_screen_name, nameFirst, ignoreCache); } public String getDisplayName(final long userId, final String name, final String screenName, final boolean nameFirst, final boolean ignoreCache) { final String nick = getUserNickname(userId, ignoreCache); if (!isEmpty(nick)) return nick; return nameFirst && !isEmpty(name) ? name : "@" + screenName; } public int getUserColor(final long userId, final boolean ignoreCache) { if (userId == -1) return Color.TRANSPARENT; if (!ignoreCache && mUserColors.indexOfKey(userId) >= 0) return mUserColors.get(userId); final int color = mColorPreferences.getInt(Long.toString(userId), Color.TRANSPARENT); mUserColors.put(userId, color); return color; } public String getUserNickname(final long userId) { return getUserNickname(userId, false); } public String getUserNickname(final long userId, final boolean ignoreCache) { if (userId == -1) return null; if (!ignoreCache && LongSparseArrayUtils.hasKey(mUserNicknames, userId)) return mUserNicknames.get(userId); final String nickname = mNicknamePreferences.getString(Long.toString(userId), null); mUserNicknames.put(userId, nickname); return nickname; } public String getUserNickname(final long userId, final String name) { return getUserNickname(userId, name, false); } public String getUserNickname(final long userId, final String name, final boolean ignoreCache) { final String nick = getUserNickname(userId, ignoreCache); return isEmpty(nick) ? name : nick; } public Set<? extends Map.Entry<String, ?>> getNameEntries() { return mNicknamePreferences.getAll().entrySet(); } public static interface OnUserColorChangedListener { void onUserColorChanged(long userId, int color); } public static interface OnUserNicknameChangedListener { void onUserNicknameChanged(long userId, String nick); } private static final class OnColorPreferenceChangeListener implements OnSharedPreferenceChangeListener { private final OnUserColorChangedListener mListener; OnColorPreferenceChangeListener(final OnUserColorChangedListener listener) { mListener = listener; } @Override public void onSharedPreferenceChanged(final SharedPreferences sharedPreferences, final String key) { final long userId = ParseUtils.parseLong(key, -1); if (mListener != null) { mListener.onUserColorChanged(userId, sharedPreferences.getInt(key, 0)); } } } private static final class OnNickPreferenceChangeListener implements OnSharedPreferenceChangeListener { private final OnUserNicknameChangedListener mListener; OnNickPreferenceChangeListener(final OnUserNicknameChangedListener listener) { mListener = listener; } @Override public void onSharedPreferenceChanged(final SharedPreferences sharedPreferences, final String key) { final long userId = ParseUtils.parseLong(key, -1); if (mListener != null) { mListener.onUserNicknameChanged(userId, sharedPreferences.getString(key, null)); } } } }