org.kontalk.ui.PreferencesActivity.java Source code

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Here is the source code for org.kontalk.ui.PreferencesActivity.java

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/*
 * Kontalk Android client
 * Copyright (C) 2015 Kontalk Devteam <devteam@kontalk.org>
    
 * 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 org.kontalk.ui;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;

import com.afollestad.materialdialogs.color.ColorChooserDialog;
import com.afollestad.materialdialogs.folderselector.FolderChooserDialog;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.ColorInt;
import android.support.annotation.NonNull;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.MenuItem;
import android.widget.Toast;

import org.kontalk.R;
import org.kontalk.authenticator.Authenticator;
import org.kontalk.crypto.PersonalKeyPack;
import org.kontalk.util.Preferences;

/**
 * Preferences activity.
 * TODO convert to fragments layout
 * @author Daniele Ricci
 */
public final class PreferencesActivity extends ToolbarActivity implements PreferencesFragment.Callback,
        FolderChooserDialog.FolderCallback, ColorChooserDialog.ColorCallback {
    private static final String TAG_NESTED = "nested";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.preferences_screen);
        setupToolbar(true);

        if (savedInstanceState == null) {
            Fragment fragment;

            // no account - redirect to bootstrap preferences
            if (Authenticator.getDefaultAccount(this) == null) {
                fragment = new BootstrapPreferences();
            } else {
                fragment = new PreferencesFragment();
            }

            getSupportFragmentManager().beginTransaction().replace(R.id.container, fragment).commit();
        }
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item.getItemId() == android.R.id.home) {
            return getSupportFragmentManager().findFragmentById(R.id.container).onOptionsItemSelected(item);
        }

        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onBackPressed() {
        // this if statement is necessary to navigate through nested and main fragments
        if (getSupportFragmentManager().getBackStackEntryCount() == 0) {
            super.onBackPressed();
        } else {
            getSupportFragmentManager().popBackStack();
        }
    }

    @Override
    public void onNestedPreferenceSelected(int key) {
        Fragment fragment;
        switch (key) {
        case R.xml.privacy_preferences:
            fragment = new PrivacyPreferences();
            break;
        default:
            throw new IllegalArgumentException("unknown preference screen: " + key);
        }

        getSupportFragmentManager().beginTransaction().replace(R.id.container, fragment, TAG_NESTED)
                .addToBackStack(TAG_NESTED).commit();
    }

    @Override
    public void onFolderSelection(@NonNull FolderChooserDialog folderChooserDialog, @NonNull File folder) {
        try {
            PreferencesFragment f = (PreferencesFragment) getSupportFragmentManager()
                    .findFragmentById(R.id.container);

            f.exportPersonalKey(this, new FileOutputStream(new File(folder, PersonalKeyPack.KEYPACK_FILENAME)));
        } catch (FileNotFoundException e) {
            Log.e(PreferencesFragment.TAG, "error exporting keys", e);
            Toast.makeText(this, R.string.err_keypair_export_write, Toast.LENGTH_LONG).show();
        }
    }

    // used only for notification LED color for now
    @Override
    public void onColorSelection(@NonNull ColorChooserDialog dialog, @ColorInt int selectedColor) {
        Preferences.setNotificationLEDColor(this, selectedColor);
    }

    public static void start(Activity context) {
        Intent intent = new Intent(context, PreferencesActivity.class);
        context.startActivityIfNeeded(intent, -1);
    }

}