Android Open Source - bitfynd-wallet-android Throttling Wallet Change Listener






From Project

Back to project page bitfynd-wallet-android.

License

The source code is released under:

GNU General Public License

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Java Source Code

/*
 * Copyright 2013-2014 the original author or authors.
 */*  w w w .  ja v  a 2  s  .  c  o m*/
 * 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 de.schildbach.wallet.util;

import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicLong;

import org.bitcoinj.core.Coin;
import org.bitcoinj.core.ECKey;
import org.bitcoinj.core.Transaction;
import org.bitcoinj.core.Wallet;
import org.bitcoinj.core.WalletEventListener;
import org.bitcoinj.script.Script;

import android.os.Handler;

/**
 * @author Andreas Schildbach
 */
public abstract class ThrottlingWalletChangeListener implements WalletEventListener
{
  private final long throttleMs;
  private final boolean coinsRelevant;
  private final boolean reorganizeRelevant;
  private final boolean confidenceRelevant;

  private final AtomicLong lastMessageTime = new AtomicLong(0);
  private final Handler handler = new Handler();
  private final AtomicBoolean relevant = new AtomicBoolean();

  private static final long DEFAULT_THROTTLE_MS = 500;

  public ThrottlingWalletChangeListener()
  {
    this(DEFAULT_THROTTLE_MS);
  }

  public ThrottlingWalletChangeListener(final long throttleMs)
  {
    this(throttleMs, true, true, true);
  }

  public ThrottlingWalletChangeListener(final boolean coinsRelevant, final boolean reorganizeRelevant, final boolean confidenceRelevant)
  {
    this(DEFAULT_THROTTLE_MS, coinsRelevant, reorganizeRelevant, confidenceRelevant);
  }

  public ThrottlingWalletChangeListener(final long throttleMs, final boolean coinsRelevant, final boolean reorganizeRelevant,
      final boolean confidenceRelevant)
  {
    this.throttleMs = throttleMs;
    this.coinsRelevant = coinsRelevant;
    this.reorganizeRelevant = reorganizeRelevant;
    this.confidenceRelevant = confidenceRelevant;
  }

  @Override
  public final void onWalletChanged(final Wallet wallet)
  {
    if (relevant.getAndSet(false))
    {
      handler.removeCallbacksAndMessages(null);

      final long now = System.currentTimeMillis();

      if (now - lastMessageTime.get() > throttleMs)
        handler.post(runnable);
      else
        handler.postDelayed(runnable, throttleMs);
    }
  }

  private final Runnable runnable = new Runnable()
  {
    @Override
    public void run()
    {
      lastMessageTime.set(System.currentTimeMillis());

      onThrottledWalletChanged();
    }
  };

  public void removeCallbacks()
  {
    handler.removeCallbacksAndMessages(null);
  }

  /** will be called back on UI thread */
  public abstract void onThrottledWalletChanged();

  @Override
  public void onCoinsReceived(final Wallet wallet, final Transaction tx, final Coin prevBalance, final Coin newBalance)
  {
    if (coinsRelevant)
      relevant.set(true);
  }

  @Override
  public void onCoinsSent(final Wallet wallet, final Transaction tx, final Coin prevBalance, final Coin newBalance)
  {
    if (coinsRelevant)
      relevant.set(true);
  }

  @Override
  public void onReorganize(final Wallet wallet)
  {
    if (reorganizeRelevant)
      relevant.set(true);
  }

  @Override
  public void onTransactionConfidenceChanged(final Wallet wallet, final Transaction tx)
  {
    if (confidenceRelevant)
      relevant.set(true);
  }

  @Override
  public void onKeysAdded(final List<ECKey> keys)
  {
    // swallow
  }

  @Override
  public void onScriptsAdded(final Wallet wallet, final List<Script> scripts)
  {
    // swallow
  }
}




Java Source Code List

de.schildbach.wallet.AddressBookProvider.java
de.schildbach.wallet.Configuration.java
de.schildbach.wallet.Constants.java
de.schildbach.wallet.ExchangeRatesProvider.java
de.schildbach.wallet.FileAttachmentProvider.java
de.schildbach.wallet.WalletApplication.java
de.schildbach.wallet.WalletBalanceWidgetProvider.java
de.schildbach.wallet.camera.CameraManager.java
de.schildbach.wallet.data.PaymentIntent.java
de.schildbach.wallet.integration.android.BitcoinIntegration.java
de.schildbach.wallet.offline.AcceptBluetoothService.java
de.schildbach.wallet.offline.AcceptBluetoothThread.java
de.schildbach.wallet.offline.DirectPaymentTask.java
de.schildbach.wallet.service.AutosyncReceiver.java
de.schildbach.wallet.service.BlockchainServiceImpl.java
de.schildbach.wallet.service.BlockchainService.java
de.schildbach.wallet.service.BlockchainStateLoader.java
de.schildbach.wallet.service.BlockchainState.java
de.schildbach.wallet.service.UpgradeWalletService.java
de.schildbach.wallet.ui.AbstractBindServiceActivity.java
de.schildbach.wallet.ui.AbstractWalletActivity.java
de.schildbach.wallet.ui.AddressAndLabel.java
de.schildbach.wallet.ui.AddressBookActivity.java
de.schildbach.wallet.ui.BlockListFragment.java
de.schildbach.wallet.ui.CurrencyAmountView.java
de.schildbach.wallet.ui.CurrencyCalculatorLink.java
de.schildbach.wallet.ui.CurrencySymbolDrawable.java
de.schildbach.wallet.ui.CurrencyTextView.java
de.schildbach.wallet.ui.DialogBuilder.java
de.schildbach.wallet.ui.EditAddressBookEntryFragment.java
de.schildbach.wallet.ui.EncryptKeysDialogFragment.java
de.schildbach.wallet.ui.ExchangeRateLoader.java
de.schildbach.wallet.ui.ExchangeRatesActivity.java
de.schildbach.wallet.ui.ExchangeRatesFragment.java
de.schildbach.wallet.ui.FancyListFragment.java
de.schildbach.wallet.ui.FileAdapter.java
de.schildbach.wallet.ui.HelpDialogFragment.java
de.schildbach.wallet.ui.ImportDialogButtonEnablerListener.java
de.schildbach.wallet.ui.InputParser.java
de.schildbach.wallet.ui.MaybeMaintenanceFragment.java
de.schildbach.wallet.ui.NetworkMonitorActivity.java
de.schildbach.wallet.ui.PeerListFragment.java
de.schildbach.wallet.ui.ProgressDialogFragment.java
de.schildbach.wallet.ui.ReportIssueDialogBuilder.java
de.schildbach.wallet.ui.RequestCoinsActivity.java
de.schildbach.wallet.ui.RequestCoinsFragment.java
de.schildbach.wallet.ui.RestoreWalletActivity.java
de.schildbach.wallet.ui.ScanActivity.java
de.schildbach.wallet.ui.ScannerView.java
de.schildbach.wallet.ui.SendCoinsQrActivity.java
de.schildbach.wallet.ui.SendingAddressesFragment.java
de.schildbach.wallet.ui.ShowPasswordCheckListener.java
de.schildbach.wallet.ui.TransactionsListAdapter.java
de.schildbach.wallet.ui.TransactionsListFragment.java
de.schildbach.wallet.ui.WalletActionsFragment.java
de.schildbach.wallet.ui.WalletActivity.java
de.schildbach.wallet.ui.WalletAddressFragment.java
de.schildbach.wallet.ui.WalletAddressesAdapter.java
de.schildbach.wallet.ui.WalletAddressesFragment.java
de.schildbach.wallet.ui.WalletBalanceFragment.java
de.schildbach.wallet.ui.WalletBalanceLoader.java
de.schildbach.wallet.ui.WalletDisclaimerFragment.java
de.schildbach.wallet.ui.WalletTransactionsFragment.java
de.schildbach.wallet.ui.preference.AboutFragment.java
de.schildbach.wallet.ui.preference.DiagnosticsFragment.java
de.schildbach.wallet.ui.preference.PreferenceActivity.java
de.schildbach.wallet.ui.preference.SettingsFragment.java
de.schildbach.wallet.ui.send.DecodePrivateKeyTask.java
de.schildbach.wallet.ui.send.DeriveKeyTask.java
de.schildbach.wallet.ui.send.MaintenanceDialogFragment.java
de.schildbach.wallet.ui.send.RequestPaymentRequestTask.java
de.schildbach.wallet.ui.send.RequestWalletBalanceTask.java
de.schildbach.wallet.ui.send.SendCoinsActivity.java
de.schildbach.wallet.ui.send.SendCoinsFragment.java
de.schildbach.wallet.ui.send.SendCoinsOfflineTask.java
de.schildbach.wallet.ui.send.SweepWalletActivity.java
de.schildbach.wallet.ui.send.SweepWalletFragment.java
de.schildbach.wallet.util.Base43.java
de.schildbach.wallet.util.BitmapFragment.java
de.schildbach.wallet.util.Bluetooth.java
de.schildbach.wallet.util.CircularProgressView.java
de.schildbach.wallet.util.CrashReporter.java
de.schildbach.wallet.util.Crypto.java
de.schildbach.wallet.util.Formats.java
de.schildbach.wallet.util.GenericUtils.java
de.schildbach.wallet.util.HttpGetThread.java
de.schildbach.wallet.util.Io.java
de.schildbach.wallet.util.Iso8601Format.java
de.schildbach.wallet.util.LinuxSecureRandom.java
de.schildbach.wallet.util.MonetarySpannable.java
de.schildbach.wallet.util.Nfc.java
de.schildbach.wallet.util.Qr.java
de.schildbach.wallet.util.ThrottlingWalletChangeListener.java
de.schildbach.wallet.util.ViewPagerTabs.java
de.schildbach.wallet.util.WalletUtils.java
de.schildbach.wallet.util.WholeStringBuilder.java