DecryptFilesActivity.java

/*
 * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
 *
 * 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.sufficientlysecure.keychain.ui;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.View;
import android.widget.Toast;

import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.intents.OpenKeychainIntents;
import org.sufficientlysecure.keychain.ui.base.BaseActivity;
import org.sufficientlysecure.keychain.util.Log;

public class DecryptFilesActivity extends BaseActivity {

    /* Intents */
    public static final String ACTION_DECRYPT_DATA = OpenKeychainIntents.DECRYPT_DATA;

    // intern
    public static final String ACTION_DECRYPT_DATA_OPEN = Constants.INTENT_PREFIX + "DECRYPT_DATA_OPEN";

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

        setFullScreenDialogClose(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                setResult(Activity.RESULT_CANCELED);
                finish();
            }
        }, false);

        // Handle intent actions
        handleActions(savedInstanceState, getIntent());
    }

    @Override
    protected void initLayout() {
        setContentView(R.layout.decrypt_files_activity);
    }

    /**
     * Handles all actions with this intent
     */
    private void handleActions(Bundle savedInstanceState, Intent intent) {
        String action = intent.getAction();
        String type = intent.getType();
        Uri uri = intent.getData();

        if (Intent.ACTION_SEND.equals(action) && type != null) {
            // When sending to Keychain Decrypt via share menu
            // Binary via content provider (could also be files)
            // override uri to get stream from send
            uri = intent.getParcelableExtra(Intent.EXTRA_STREAM);
            action = ACTION_DECRYPT_DATA;
        } else if (Intent.ACTION_VIEW.equals(action)) {
            // Android's Action when opening file associated to Keychain (see AndroidManifest.xml)

            // override action
            action = ACTION_DECRYPT_DATA;
        }

        // No need to initialize fragments if we are being restored
        if (savedInstanceState != null) {
            return;
        }

        // Definitely need a data uri with the decrypt_data intent
        if (ACTION_DECRYPT_DATA.equals(action) && uri == null) {
            Toast.makeText(this, "No data to decrypt!", Toast.LENGTH_LONG).show();
            setResult(Activity.RESULT_CANCELED);
            finish();
        }

        boolean showOpenDialog = ACTION_DECRYPT_DATA_OPEN.equals(action);
        DecryptFilesFragment frag = DecryptFilesFragment.newInstance(uri, showOpenDialog);

        // Add the fragment to the 'fragment_container' FrameLayout
        // NOTE: We use commitAllowingStateLoss() to prevent weird crashes!
        getSupportFragmentManager().beginTransaction()
                .replace(R.id.decrypt_files_fragment_container, frag)
                .commitAllowingStateLoss();

    }

}