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/*
* Copyright 2014 Hieu Rocker
*
* 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.rockerhieu.emojicon;
import java.util.ArrayList;
import java.util.StringTokenizer;
import com.rockerhieu.emojicon.emoji.Emojicon;
import android.content.Context;
import android.content.SharedPreferences;
/**
* @author Daniele Ricci
*/
public class EmojiconRecentsManager extends ArrayList<Emojicon> {
private static final String DELIMITER = ",";
private static final String PREFERENCE_NAME = "emojicon";
private static final String PREF_RECENTS = "recent_emojis";
private static final String PREF_PAGE = "recent_page";
private static final Object LOCK = new Object();
private static EmojiconRecentsManager sInstance;
private static int maximumSize = 40;
private Context mContext;
private EmojiconRecentsManager(Context context) {
mContext = context.getApplicationContext();
loadRecents();
}
public static EmojiconRecentsManager getInstance(Context context) {
if (sInstance == null) {
synchronized (LOCK) {
if (sInstance == null) {
sInstance = new EmojiconRecentsManager(context);
}
}
}
return sInstance;
}
public int getRecentPage() {
return getPreferences().getInt(PREF_PAGE, 0);
}
public void setRecentPage(int page) {
getPreferences().edit().putInt(PREF_PAGE, page).commit();
}
public void push(Emojicon object) {
// FIXME totally inefficient way of adding the emoji to the adapter
// TODO this should be probably replaced by a deque
if (contains(object)) {
super.remove(object);
}
add(0, object);
}
@Override
public boolean add(Emojicon object) {
boolean ret = super.add(object);
while (this.size() > EmojiconRecentsManager.maximumSize) {
super.remove(0);
}
saveRecents();
return ret;
}
@Override
public void add(int index, Emojicon object) {
super.add(index, object);
if (index == 0) {
while (this.size() > EmojiconRecentsManager.maximumSize) {
super.remove(EmojiconRecentsManager.maximumSize);
}
} else {
while (this.size() > EmojiconRecentsManager.maximumSize) {
super.remove(0);
}
}
saveRecents();
}
@Override
public boolean remove(Object object) {
boolean ret = super.remove(object);
saveRecents();
return ret;
}
private SharedPreferences getPreferences() {
return mContext.getSharedPreferences(PREFERENCE_NAME, Context.MODE_PRIVATE);
}
private void loadRecents() {
SharedPreferences prefs = getPreferences();
String str = prefs.getString(PREF_RECENTS, "");
StringTokenizer tokenizer = new StringTokenizer(str, EmojiconRecentsManager.DELIMITER);
while (tokenizer.hasMoreTokens()) {
add(Emojicon.fromChars(tokenizer.nextToken()));
}
}
public void saveRecents() {
StringBuilder str = new StringBuilder();
int c = size();
for (int i = 0; i < c; i++) {
Emojicon e = get(i);
str.append(e.getEmoji());
if (i < (c - 1)) {
str.append(EmojiconRecentsManager.DELIMITER);
}
}
SharedPreferences prefs = getPreferences();
prefs.edit().putString(PREF_RECENTS, str.toString()).commit();
}
public static void setMaximumSize(int maximumSize) {
EmojiconRecentsManager.maximumSize = maximumSize;
}
}
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