Android Open Source - saostar Accounts

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License

The source code is released under:
Apache License
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Java Source Code

package net.azyobuzi.azyotter.saostar.configuration;
/*from w  w  w . ja v  a 2 s  .com*/
import java.util.ArrayList;

import net.azyobuzi.azyotter.saostar.ContextAccess;
import net.azyobuzi.azyotter.saostar.StringUtil;
import net.azyobuzi.azyotter.saostar.linq.Enumerable;
import net.azyobuzi.azyotter.saostar.services.TimelineReceiveService;
import net.azyobuzi.azyotter.saostar.system.Action;
import net.azyobuzi.azyotter.saostar.system.Func2;

import android.content.SharedPreferences.Editor;

public class Accounts {
  private static ArrayList<Account> list = null;
  private static final Object lockObj = new Object();

  private static void loadAccounts() { //synchronized?????????
    list = new ArrayList<Account>();

    String[] accountsStr = ContextAccess.getDefaultSharedPreferences().getString("twitterAccounts", "").split(",");
    for (String id : accountsStr) {
      if (!StringUtil.isNullOrEmpty(id)) {
        Account re = new Account(Long.valueOf(id));
        list.add(re);
        TimelineReceiveService.addAccount(re);
      }
    }
  }

  public static Enumerable<Account> getAllAccounts() {
    synchronized (lockObj) {
      if (list == null) loadAccounts();

      return Enumerable.from(list.toArray()).cast();
    }
  }

  public static Account get(final long id) {
    return getAllAccounts().where(new Func2<Account, Integer, Boolean>() {
      @Override
      public Boolean invoke(Account arg0, Integer arg1) {
        return arg0.getId() == id;
      }
    }).firstOrDefault(null);
  }

  public static int getAccountsCount() {
    synchronized (lockObj) {
      if (list == null) loadAccounts();

      return list.size();
    }
  }

  public static void add(final Account newAccount) {
    synchronized (lockObj) {
      if (list == null) loadAccounts();

      list.add(newAccount);

      for (Action handler : accountsChangedHandler) {
        handler.invoke();
      }

      save();

      TimelineReceiveService.addAccount(newAccount);
    }
  }

  public static void remove(final Account account) {
    synchronized (lockObj) {
      if (list == null) loadAccounts();

      TimelineReceiveService.removeAccount(account);

      list.remove(account);

      for (Action handler : accountsChangedHandler) {
        handler.invoke();
      }

      save();
    }
  }

  public static void move(final int from, final int to) {
    synchronized (lockObj) {
      if (list == null) loadAccounts();

      Account account = list.remove(from);
      list.add(to, account);

      for (Action handler : accountsChangedHandler) {
        handler.invoke();
      }

      save();
    }
  }

  public static int indexOf(long id) {
    Account a = get(id);

    synchronized (lockObj) {
      return list.indexOf(a);
    }
  }

  public static final ArrayList<Action> accountsChangedHandler = new ArrayList<Action>();

  public static void save() {
    ContextAccess.getDefaultSharedPreferences().edit().putString("twitterAccounts", StringUtil.join(",",
      getAllAccounts().select(new Func2<Account, Integer, CharSequence>() {
        @Override
        public CharSequence invoke(Account arg0, Integer arg1) {
          return String.valueOf(arg0.getId());
        }
      })
    ))
    .apply();
  }

  public static Account getSelectedAccount() {
    long selectedId = ContextAccess.getDefaultSharedPreferences().getLong("selectedAccount", -1);

    Account re = get(selectedId);
    if (re == null) {
      re = getAllAccounts().firstOrDefault(null);
    }

    return re;
  }

  public static void setSelectedAccount(Account value) {
    Editor ed = ContextAccess.getDefaultSharedPreferences().edit();
    ed.putLong("selectedAccount", value != null ? value.getId() : 0);
    ed.apply();

    for (Action handler : selectedAccountChangedHandler) {
      handler.invoke();
    }
  }

  public static final ArrayList<Action> selectedAccountChangedHandler = new ArrayList<Action>();
}
Java Source Code List
