Java tutorial
/* * Copyright (C) 2012-2014 Dominik Schrmann <dominik@dominikschuermann.de> * Copyright (C) 2010-2014 Thialfihar <thi@thialfihar.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.sufficientlysecure.keychain.ui; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import android.support.v4.view.PagerTabStrip; import android.support.v4.view.ViewPager; import android.widget.Toast; import org.sufficientlysecure.keychain.Constants; import org.sufficientlysecure.keychain.R; import org.sufficientlysecure.keychain.helper.FileHelper; import org.sufficientlysecure.keychain.ui.adapter.PagerTabStripAdapter; import org.sufficientlysecure.keychain.util.Log; public class EncryptActivity extends DrawerActivity implements EncryptSymmetricFragment.OnSymmetricKeySelection, EncryptAsymmetricFragment.OnAsymmetricKeySelection, EncryptActivityInterface { /* Intents */ public static final String ACTION_ENCRYPT = Constants.INTENT_PREFIX + "ENCRYPT"; /* EXTRA keys for input */ public static final String EXTRA_TEXT = "text"; // enables ASCII Armor for file encryption when uri is given public static final String EXTRA_ASCII_ARMOR = "ascii_armor"; // preselect ids, for internal use public static final String EXTRA_SIGNATURE_KEY_ID = "signature_key_id"; public static final String EXTRA_ENCRYPTION_KEY_IDS = "encryption_key_ids"; // view ViewPager mViewPagerMode; PagerTabStrip mPagerTabStripMode; PagerTabStripAdapter mTabsAdapterMode; ViewPager mViewPagerContent; PagerTabStrip mPagerTabStripContent; PagerTabStripAdapter mTabsAdapterContent; // tabs Bundle mAsymmetricFragmentBundle = new Bundle(); Bundle mSymmetricFragmentBundle = new Bundle(); Bundle mMessageFragmentBundle = new Bundle(); Bundle mFileFragmentBundle = new Bundle(); int mSwitchToMode = PAGER_MODE_ASYMMETRIC; int mSwitchToContent = PAGER_CONTENT_MESSAGE; private static final int PAGER_MODE_ASYMMETRIC = 0; private static final int PAGER_MODE_SYMMETRIC = 1; private static final int PAGER_CONTENT_MESSAGE = 0; private static final int PAGER_CONTENT_FILE = 1; // model used by message and file fragments private long mEncryptionKeyIds[] = null; private long mSigningKeyId = Constants.key.none; private String mPassphrase; private String mPassphraseAgain; @Override public void onSigningKeySelected(long signingKeyId) { mSigningKeyId = signingKeyId; } @Override public void onEncryptionKeysSelected(long[] encryptionKeyIds) { mEncryptionKeyIds = encryptionKeyIds; } @Override public void onPassphraseUpdate(String passphrase) { mPassphrase = passphrase; } @Override public void onPassphraseAgainUpdate(String passphrase) { mPassphraseAgain = passphrase; } @Override public boolean isModeSymmetric() { if (PAGER_MODE_SYMMETRIC == mViewPagerMode.getCurrentItem()) { return true; } else { return false; } } @Override public long getSignatureKey() { return mSigningKeyId; } @Override public long[] getEncryptionKeys() { return mEncryptionKeyIds; } @Override public String getPassphrase() { return mPassphrase; } @Override public String getPassphraseAgain() { return mPassphraseAgain; } private void initView() { mViewPagerMode = (ViewPager) findViewById(R.id.encrypt_pager_mode); mPagerTabStripMode = (PagerTabStrip) findViewById(R.id.encrypt_pager_tab_strip_mode); mViewPagerContent = (ViewPager) findViewById(R.id.encrypt_pager_content); mPagerTabStripContent = (PagerTabStrip) findViewById(R.id.encrypt_pager_tab_strip_content); mTabsAdapterMode = new PagerTabStripAdapter(this); mViewPagerMode.setAdapter(mTabsAdapterMode); mTabsAdapterContent = new PagerTabStripAdapter(this); mViewPagerContent.setAdapter(mTabsAdapterContent); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.encrypt_activity); initView(); // if called with an intent action, do not init drawer navigation if (ACTION_ENCRYPT.equals(getIntent().getAction())) { // TODO: back button to key? } else { setupDrawerNavigation(savedInstanceState); } // Handle intent actions handleActions(getIntent()); mTabsAdapterMode.addTab(EncryptAsymmetricFragment.class, mAsymmetricFragmentBundle, getString(R.string.label_asymmetric)); mTabsAdapterMode.addTab(EncryptSymmetricFragment.class, mSymmetricFragmentBundle, getString(R.string.label_symmetric)); mViewPagerMode.setCurrentItem(mSwitchToMode); mTabsAdapterContent.addTab(EncryptMessageFragment.class, mMessageFragmentBundle, getString(R.string.label_message)); mTabsAdapterContent.addTab(EncryptFileFragment.class, mFileFragmentBundle, getString(R.string.label_file)); mViewPagerContent.setCurrentItem(mSwitchToContent); } /** * Handles all actions with this intent * * @param intent */ private void handleActions(Intent intent) { String action = intent.getAction(); Bundle extras = intent.getExtras(); String type = intent.getType(); Uri uri = intent.getData(); if (extras == null) { extras = new Bundle(); } /* * Android's Action */ if (Intent.ACTION_SEND.equals(action) && type != null) { // When sending to APG Encrypt via share menu if ("text/plain".equals(type)) { // Plain text String sharedText = intent.getStringExtra(Intent.EXTRA_TEXT); if (sharedText != null) { // handle like normal text encryption, override action and extras to later // executeServiceMethod ACTION_ENCRYPT in main actions extras.putString(EXTRA_TEXT, sharedText); extras.putBoolean(EXTRA_ASCII_ARMOR, true); action = ACTION_ENCRYPT; } } else { // Files via content provider, override uri and action uri = (Uri) intent.getParcelableExtra(Intent.EXTRA_STREAM); action = ACTION_ENCRYPT; } } if (extras.containsKey(EXTRA_ASCII_ARMOR)) { boolean requestAsciiArmor = extras.getBoolean(EXTRA_ASCII_ARMOR, true); mFileFragmentBundle.putBoolean(EncryptFileFragment.ARG_ASCII_ARMOR, requestAsciiArmor); } String textData = extras.getString(EXTRA_TEXT); long signatureKeyId = extras.getLong(EXTRA_SIGNATURE_KEY_ID); long[] encryptionKeyIds = extras.getLongArray(EXTRA_ENCRYPTION_KEY_IDS); // preselect keys given by intent mAsymmetricFragmentBundle.putLongArray(EncryptAsymmetricFragment.ARG_ENCRYPTION_KEY_IDS, encryptionKeyIds); mAsymmetricFragmentBundle.putLong(EncryptAsymmetricFragment.ARG_SIGNATURE_KEY_ID, signatureKeyId); mSwitchToMode = PAGER_MODE_ASYMMETRIC; /** * Main Actions */ if (ACTION_ENCRYPT.equals(action) && textData != null) { // encrypt text based on given extra mMessageFragmentBundle.putString(EncryptMessageFragment.ARG_TEXT, textData); mSwitchToContent = PAGER_CONTENT_MESSAGE; } else if (ACTION_ENCRYPT.equals(action) && uri != null) { // encrypt file based on Uri // get file path from uri String path = FileHelper.getPath(this, uri); if (path != null) { mFileFragmentBundle.putString(EncryptFileFragment.ARG_FILENAME, path); mSwitchToContent = PAGER_CONTENT_FILE; } else { Log.e(Constants.TAG, "Direct binary data without actual file in filesystem is not supported " + "by Intents. Please use the Remote Service API!"); Toast.makeText(this, R.string.error_only_files_are_supported, Toast.LENGTH_LONG).show(); // end activity finish(); } } else { Log.e(Constants.TAG, "Include the extra 'text' or an Uri with setData() in your Intent!"); } } }