de.schildbach.litecoinwallet.ui.WalletDisclaimerFragment.java Source code

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Here is the source code for de.schildbach.litecoinwallet.ui.WalletDisclaimerFragment.java

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/*
 * Copyright 2013 the original author or authors.
 *
 * 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.litecoinwallet.ui;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
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.litecoinwallet.Constants;
import de.schildbach.litecoinwallet.service.BlockchainService;
import de.schildbach.litecoinwallet.R;

/**
 * @author Andreas Schildbach
 */
public final class WalletDisclaimerFragment extends Fragment implements OnSharedPreferenceChangeListener {
    private Activity activity;
    private SharedPreferences prefs;

    private int download;

    private TextView messageView;

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

        this.activity = (WalletActivity) activity;
        this.prefs = PreferenceManager.getDefaultSharedPreferences(activity);
    }

    @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 = prefs.getBoolean(Constants.PREFS_KEY_REMIND_BACKUP, true);
                if (showBackup)
                    ((WalletActivity) activity).handleExportKeys();
                else
                    HelpDialogFragment.page(getFragmentManager(), "safety");
            }
        });

        return messageView;
    }

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

        prefs.registerOnSharedPreferenceChangeListener(this);

        activity.registerReceiver(broadcastReceiver, new IntentFilter(BlockchainService.ACTION_BLOCKCHAIN_STATE));

        updateView();
    }

    @Override
    public void onPause() {
        activity.unregisterReceiver(broadcastReceiver);

        prefs.unregisterOnSharedPreferenceChangeListener(this);

        super.onPause();
    }

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

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

        final boolean showBackup = prefs.getBoolean(Constants.PREFS_KEY_REMIND_BACKUP, true);
        final boolean showSafety = prefs.getBoolean(Constants.PREFS_KEY_DISCLAIMER, true);

        final int progressResId;
        if (download == BlockchainService.ACTION_BLOCKCHAIN_STATE_DOWNLOAD_OK)
            progressResId = 0;
        else if ((download & BlockchainService.ACTION_BLOCKCHAIN_STATE_DOWNLOAD_STORAGE_PROBLEM) != 0)
            progressResId = R.string.blockchain_state_progress_problem_storage;
        else if ((download & BlockchainService.ACTION_BLOCKCHAIN_STATE_DOWNLOAD_NETWORK_PROBLEM) != 0)
            progressResId = R.string.blockchain_state_progress_problem_network;
        else
            throw new IllegalStateException("download=" + download);

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

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

    private final BlockchainBroadcastReceiver broadcastReceiver = new BlockchainBroadcastReceiver();

    private final class BlockchainBroadcastReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(final Context context, final Intent intent) {
            download = intent.getIntExtra(BlockchainService.ACTION_BLOCKCHAIN_STATE_DOWNLOAD,
                    BlockchainService.ACTION_BLOCKCHAIN_STATE_DOWNLOAD_OK);

            updateView();
        }
    }
}