Android Open Source - bitfynd-wallet-android Wallet Balance Fragment

From Project

Back to project page bitfynd-wallet-android.
License

The source code is released under:
GNU General Public License
If you think the Android project bitfynd-wallet-android listed in this page is inappropriate, such as containing malicious code/tools or violating the copyright, please email info at java2s dot com, thanks.
Java Source Code

/*
 * Copyright 2011-2014 the original author or authors.
 */*from w ww.j  a v  a2s  .c om*/
 * 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.ui;

import javax.annotation.CheckForNull;

import org.bitcoinj.core.Coin;
import org.bitcoinj.core.Wallet;
import org.bitcoinj.utils.Fiat;

import android.app.Activity;
import android.app.Fragment;
import android.app.LoaderManager;
import android.app.LoaderManager.LoaderCallbacks;
import android.content.Intent;
import android.content.Loader;
import android.database.Cursor;
import android.os.Bundle;
import android.text.format.DateUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.TextView;
import de.schildbach.wallet.Configuration;
import de.schildbach.wallet.Constants;
import de.schildbach.wallet.ExchangeRatesProvider;
import de.schildbach.wallet.ExchangeRatesProvider.ExchangeRate;
import de.schildbach.wallet.WalletApplication;
import de.schildbach.wallet.service.BlockchainState;
import de.schildbach.wallet.service.BlockchainStateLoader;
import de.schildbach.wallet.R;

/**
 * @author Andreas Schildbach
 */
public final class WalletBalanceFragment extends Fragment
{
  private WalletApplication application;
  private AbstractWalletActivity activity;
  private Configuration config;
  private Wallet wallet;
  private LoaderManager loaderManager;

  private View viewBalance;
  private CurrencyTextView viewBalanceBtc;
  private View viewBalanceTooMuch;
  private FrameLayout viewBalanceLocalFrame;
  private CurrencyTextView viewBalanceLocal;
  private TextView viewProgress;

  private boolean showLocalBalance;

  @CheckForNull
  private Coin balance = null;
  @CheckForNull
  private ExchangeRate exchangeRate = null;
  @CheckForNull
  private BlockchainState blockchainState = null;

  private static final int ID_BALANCE_LOADER = 0;
  private static final int ID_RATE_LOADER = 1;
  private static final int ID_BLOCKCHAIN_STATE_LOADER = 2;

  private static final long BLOCKCHAIN_UPTODATE_THRESHOLD_MS = DateUtils.HOUR_IN_MILLIS;

  @Override
  public void onAttach(final Activity activity)
  {
    super.onAttach(activity);

    this.activity = (AbstractWalletActivity) activity;
    this.application = (WalletApplication) activity.getApplication();
    this.config = application.getConfiguration();
    this.wallet = application.getWallet();
    this.loaderManager = getLoaderManager();

    showLocalBalance = getResources().getBoolean(R.bool.show_local_balance);
  }

  @Override
  public View onCreateView(final LayoutInflater inflater, final ViewGroup container, final Bundle savedInstanceState)
  {
    return inflater.inflate(R.layout.wallet_balance_fragment, container, false);
  }

  @Override
  public void onViewCreated(final View view, final Bundle savedInstanceState)
  {
    super.onViewCreated(view, savedInstanceState);

    final boolean showExchangeRatesOption = getResources().getBoolean(R.bool.show_exchange_rates_option);

    viewBalance = view.findViewById(R.id.wallet_balance);
    if (showExchangeRatesOption)
    {
      viewBalance.setOnClickListener(new OnClickListener()
      {
        @Override
        public void onClick(final View v)
        {
          startActivity(new Intent(getActivity(), ExchangeRatesActivity.class));
        }
      });
    }
    else
    {
      viewBalance.setEnabled(false);
    }

    viewBalanceBtc = (CurrencyTextView) view.findViewById(R.id.wallet_balance_btc);

    viewBalanceTooMuch = view.findViewById(R.id.wallet_balance_too_much);

    viewBalanceLocalFrame = (FrameLayout) view.findViewById(R.id.wallet_balance_local_frame);
    if (showExchangeRatesOption)
      viewBalanceLocalFrame.setForeground(getResources().getDrawable(R.drawable.ic_settings_white));

    viewBalanceLocal = (CurrencyTextView) view.findViewById(R.id.wallet_balance_local);
    viewBalanceLocal.setInsignificantRelativeSize(1);
    viewBalanceLocal.setStrikeThru(Constants.TEST);

    viewProgress = (TextView) view.findViewById(R.id.wallet_balance_progress);
  }

  @Override
  public void onResume()
  {
    super.onResume();

    loaderManager.initLoader(ID_BALANCE_LOADER, null, balanceLoaderCallbacks);
    loaderManager.initLoader(ID_RATE_LOADER, null, rateLoaderCallbacks);
    loaderManager.initLoader(ID_BLOCKCHAIN_STATE_LOADER, null, blockchainStateLoaderCallbacks);

    updateView();
  }

  @Override
  public void onPause()
  {
    loaderManager.destroyLoader(ID_BLOCKCHAIN_STATE_LOADER);
    loaderManager.destroyLoader(ID_RATE_LOADER);
    loaderManager.destroyLoader(ID_BALANCE_LOADER);

    super.onPause();
  }

  private void updateView()
  {
    if (!isAdded())
      return;

    final boolean showProgress;

    if (blockchainState != null && blockchainState.bestChainDate != null)
    {
      final long blockchainLag = System.currentTimeMillis() - blockchainState.bestChainDate.getTime();
      final boolean blockchainUptodate = blockchainLag < BLOCKCHAIN_UPTODATE_THRESHOLD_MS;
      final boolean noImpediments = blockchainState.impediments.isEmpty();

      showProgress = !(blockchainUptodate || !blockchainState.replaying);

      final String downloading = getString(noImpediments ? R.string.blockchain_state_progress_downloading
          : R.string.blockchain_state_progress_stalled);

      if (blockchainLag < 2 * DateUtils.DAY_IN_MILLIS)
      {
        final long hours = blockchainLag / DateUtils.HOUR_IN_MILLIS;
        viewProgress.setText(getString(R.string.blockchain_state_progress_hours, downloading, hours));
      }
      else if (blockchainLag < 2 * DateUtils.WEEK_IN_MILLIS)
      {
        final long days = blockchainLag / DateUtils.DAY_IN_MILLIS;
        viewProgress.setText(getString(R.string.blockchain_state_progress_days, downloading, days));
      }
      else if (blockchainLag < 90 * DateUtils.DAY_IN_MILLIS)
      {
        final long weeks = blockchainLag / DateUtils.WEEK_IN_MILLIS;
        viewProgress.setText(getString(R.string.blockchain_state_progress_weeks, downloading, weeks));
      }
      else
      {
        final long months = blockchainLag / (30 * DateUtils.DAY_IN_MILLIS);
        viewProgress.setText(getString(R.string.blockchain_state_progress_months, downloading, months));
      }
    }
    else
    {
      showProgress = false;
    }

    if (!showProgress)
    {
      viewBalance.setVisibility(View.VISIBLE);

      if (!showLocalBalance)
        viewBalanceLocalFrame.setVisibility(View.GONE);

      if (balance != null)
      {
        viewBalanceBtc.setVisibility(View.VISIBLE);
        viewBalanceBtc.setFormat(config.getFormat());
        viewBalanceBtc.setAmount(balance);

        final boolean tooMuch = balance.isGreaterThan(Coin.COIN);

        viewBalanceTooMuch.setVisibility(tooMuch ? View.VISIBLE : View.GONE);

        if (showLocalBalance)
        {
          if (exchangeRate != null)
          {
            final Fiat localValue = exchangeRate.rate.coinToFiat(balance);
            viewBalanceLocalFrame.setVisibility(View.VISIBLE);
            viewBalanceLocal.setFormat(Constants.LOCAL_FORMAT.code(0, Constants.PREFIX_ALMOST_EQUAL_TO + exchangeRate.getCurrencyCode()));
            viewBalanceLocal.setAmount(localValue);
            viewBalanceLocal.setTextColor(getResources().getColor(R.color.balance_light));
          }
          else
          {
            viewBalanceLocalFrame.setVisibility(View.INVISIBLE);
          }
        }
      }
      else
      {
        viewBalanceBtc.setVisibility(View.INVISIBLE);
      }

      viewProgress.setVisibility(View.GONE);
    }
    else
    {
      viewProgress.setVisibility(View.VISIBLE);
      viewBalance.setVisibility(View.INVISIBLE);
    }
  }

  private final LoaderCallbacks<BlockchainState> blockchainStateLoaderCallbacks = new LoaderManager.LoaderCallbacks<BlockchainState>()
  {
    @Override
    public Loader<BlockchainState> onCreateLoader(final int id, final Bundle args)
    {
      return new BlockchainStateLoader(activity);
    }

    @Override
    public void onLoadFinished(final Loader<BlockchainState> loader, final BlockchainState blockchainState)
    {
      WalletBalanceFragment.this.blockchainState = blockchainState;

      updateView();
    }

    @Override
    public void onLoaderReset(final Loader<BlockchainState> loader)
    {
    }
  };

  private final LoaderCallbacks<Coin> balanceLoaderCallbacks = new LoaderManager.LoaderCallbacks<Coin>()
  {
    @Override
    public Loader<Coin> onCreateLoader(final int id, final Bundle args)
    {
      return new WalletBalanceLoader(activity, wallet);
    }

    @Override
    public void onLoadFinished(final Loader<Coin> loader, final Coin balance)
    {
      WalletBalanceFragment.this.balance = balance;

      updateView();
    }

    @Override
    public void onLoaderReset(final Loader<Coin> loader)
    {
    }
  };

  private final LoaderCallbacks<Cursor> rateLoaderCallbacks = new LoaderManager.LoaderCallbacks<Cursor>()
  {
    @Override
    public Loader<Cursor> onCreateLoader(final int id, final Bundle args)
    {
      return new ExchangeRateLoader(activity, config);
    }

    @Override
    public void onLoadFinished(final Loader<Cursor> loader, final Cursor data)
    {
      if (data != null && data.getCount() > 0)
      {
        data.moveToFirst();
        exchangeRate = ExchangeRatesProvider.getExchangeRate(data);
        updateView();
      }
    }

    @Override
    public void onLoaderReset(final Loader<Cursor> loader)
    {
    }
  };
}
Java Source Code List
