Java tutorial
/* * ****************************************************************************** * * Copyright 2015 See AUTHORS file. * * * * Licensed under the Apache License, Version 2.0 (the "License"); * * you may not use this file except in compliance with the License. * * You may obtain a copy of the License at * * * * http://www.apache.org/licenses/LICENSE-2.0 * * * * Unless required by applicable law or agreed to in writing, software * * distributed under the License is distributed on an "AS IS" BASIS, * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * * See the License for the specific language governing permissions and * * limitations under the License. * ***************************************************************************** */ package com.uwsoft.editor.data.manager; import java.util.ArrayList; import java.util.Collections; import java.util.Map; import com.badlogic.gdx.Gdx; import com.badlogic.gdx.Preferences; import com.badlogic.gdx.utils.Array; import org.apache.commons.io.FilenameUtils; public class PreferencesManager { private static final String TAG = PreferencesManager.class.getCanonicalName(); private static PreferencesManager instance = null; private final Preferences prefs; public PreferencesManager() { prefs = Gdx.app.getPreferences("Overlap2DPrefs"); initPrefs(); } private void initPrefs() { if (!contains("recentHistory")) { putInteger("recentHistory", 10); flush(); } } public static PreferencesManager getInstance() { if (instance == null) instance = new PreferencesManager(); return instance; } // Map to Prefs public boolean contains(String key) { return prefs.contains(key); } public void flush() { prefs.flush(); } public Map<String, ?> get() { return prefs.get(); } public boolean getBoolean(String key) { return prefs.getBoolean(key); } public boolean getBoolean(String key, boolean defVal) { return prefs.getBoolean(key, defVal); } public float getFloat(String key) { return prefs.getFloat(key); } public float getFloat(String key, float defVal) { return prefs.getFloat(key, defVal); } public int getInteger(String key) { return prefs.getInteger(key); } public int getInteger(String key, int defVal) { return prefs.getInteger(key, defVal); } public long getLong(String key) { return prefs.getLong(key); } public long getLong(String key, long defVal) { return prefs.getLong(key, defVal); } public String getString(String key) { return prefs.getString(key); } public String getString(String key, String defVal) { return prefs.getString(key, defVal); } public Preferences put(Map<String, ?> vals) { return prefs.put(vals); } public Preferences putBoolean(String key, boolean val) { return prefs.putBoolean(key, val); } public Preferences putFloat(String key, float val) { return prefs.putFloat(key, val); } public Preferences putInteger(String key, int val) { return prefs.putInteger(key, val); } public Preferences putLong(String key, int val) { return prefs.putLong(key, val); } public Preferences putString(String key, String val) { return prefs.putString(key, val); } public void remove(String key) { prefs.remove(key); } // Custom Functions // Recent Project Manager // Count: recentHistory // Array: recent.0, recent.1, recent.2, etc, etc. private ArrayList<String> recentHistory; public void buildRecentHistory() { recentHistory = new ArrayList<String>(); for (int i = 0; i < getInteger("recentHistory"); i++) { if (!contains(String.format("recent.%d", i))) { break; } String project = getString(String.format("recent.%d", i)); java.io.File file = new java.io.File(project); if (file.exists() && file.isFile() && file.canRead()) { recentHistory.add(project); } } } public ArrayList<String> getRecentHistory() { return recentHistory; } public void storeRecentHistory() { cleanDuplicates(recentHistory); for (int i = 0; i < recentHistory.size(); i++) { if (i > getInteger("recentHistory")) break; prefs.remove(String.format("recent.%d", i)); prefs.putString(String.format("recent.%d", i), recentHistory.get(i)); } flush(); } private void cleanDuplicates(ArrayList<String> paths) { Array<Integer> duplicates = new Array<>(); for (int i = 0; i < paths.size() - 1; i++) { if (duplicates.contains(i, false)) continue; for (int j = i + 1; j < paths.size(); j++) { if (FilenameUtils.equalsNormalized(paths.get(i), paths.get(j))) { duplicates.add(j); } } } duplicates.sort(); duplicates.reverse(); for (int i = 0; i < duplicates.size; i++) { paths.remove((int) duplicates.get(i)); } } public void pushHistory(String file) { if (recentHistory.contains(file)) popHistory(file); recentHistory.add(0, file); storeRecentHistory(); } public void popHistory(String file) { if (recentHistory.contains(file)) { recentHistory.remove(file); storeRecentHistory(); } } public void popHistory() { recentHistory.remove(-1); storeRecentHistory(); } public void clearHistory() { for (int i = 0; i < recentHistory.size(); i++) { if (i > getInteger("recentHistory")) break; prefs.remove(String.format("recent.%d", i)); } flush(); recentHistory.clear(); } }