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

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * Copyright 2013-2014 the original author or authors.
 *//from  ww w  .ja  va 2s.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.ui;

import java.util.Set;

import javax.annotation.CheckForNull;

import android.app.Activity;
import android.app.Fragment;
import android.app.LoaderManager;
import android.app.LoaderManager.LoaderCallbacks;
import android.content.Loader;
import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.os.Bundle;
import android.text.Html;
import android.text.SpannableStringBuilder;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.ViewParent;
import android.widget.FrameLayout;
import android.widget.TextView;
import de.schildbach.wallet.Configuration;
import de.schildbach.wallet.WalletApplication;
import de.schildbach.wallet.service.BlockchainState;
import de.schildbach.wallet.service.BlockchainState.Impediment;
import de.schildbach.wallet.service.BlockchainStateLoader;
import de.schildbach.wallet.R;

/**
 * @author Andreas Schildbach
 */
public final class WalletDisclaimerFragment extends Fragment implements OnSharedPreferenceChangeListener
{
  private Activity activity;
  private Configuration config;
  private LoaderManager loaderManager;

  @CheckForNull
  private BlockchainState blockchainState = null;

  private TextView messageView;

  private static final int ID_BLOCKCHAIN_STATE_LOADER = 0;

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

    this.activity = activity;
    final WalletApplication application = (WalletApplication) activity.getApplication();
    this.config = application.getConfiguration();
    this.loaderManager = getLoaderManager();
  }

  @Override
  public View onCreateView(final LayoutInflater inflater, final ViewGroup container, final Bundle savedInstanceState)
  {
    messageView = (TextView) inflater.inflate(R.layout.wallet_disclaimer_fragment, container);

    messageView.setOnClickListener(new OnClickListener()
    {
      @Override
      public void onClick(final View v)
      {
        final boolean showBackup = config.remindBackup();
        if (showBackup)
          ((WalletActivity) activity).handleBackupWallet();
        else
          HelpDialogFragment.page(getFragmentManager(), R.string.help_safety);
      }
    });

    return messageView;
  }

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

    config.registerOnSharedPreferenceChangeListener(this);

    loaderManager.initLoader(ID_BLOCKCHAIN_STATE_LOADER, null, blockchainStateLoaderCallbacks);

    updateView();
  }

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

    config.unregisterOnSharedPreferenceChangeListener(this);

    super.onPause();
  }

  @Override
  public void onSharedPreferenceChanged(final SharedPreferences sharedPreferences, final String key)
  {
    if (Configuration.PREFS_KEY_DISCLAIMER.equals(key) || Configuration.PREFS_KEY_REMIND_BACKUP.equals(key))
      updateView();
  }

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

    final boolean showBackup = config.remindBackup();
    final boolean showDisclaimer = config.getDisclaimerEnabled();

    int progressResId = 0;
    if (blockchainState != null)
    {
      final Set<Impediment> impediments = blockchainState.impediments;
      if (impediments.contains(Impediment.STORAGE))
        progressResId = R.string.blockchain_state_progress_problem_storage;
      else if (impediments.contains(Impediment.NETWORK))
        progressResId = R.string.blockchain_state_progress_problem_network;
    }

    final SpannableStringBuilder text = new SpannableStringBuilder();
    if (progressResId != 0)
      text.append(Html.fromHtml("<b>" + getString(progressResId) + "</b>"));
    if (progressResId != 0 && (showBackup || showDisclaimer))
      text.append('\n');
    if (showBackup)
      text.append(Html.fromHtml(getString(R.string.wallet_disclaimer_fragment_remind_backup)));
    if (showBackup && showDisclaimer)
      text.append('\n');
    if (showDisclaimer)
      text.append(Html.fromHtml(getString(R.string.wallet_disclaimer_fragment_remind_safety)));
    messageView.setText(text);

    final View view = getView();
        final ViewParent parent;
        if (view != null) {
            parent = view.getParent();
            final View fragment = parent instanceof FrameLayout ? (FrameLayout) parent : view;
            fragment.setVisibility(text.length() > 0 ? View.VISIBLE : View.GONE);
        }
  }

  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)
    {
      WalletDisclaimerFragment.this.blockchainState = blockchainState;

      updateView();
    }

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

Java Source Code List

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