Java tutorial
/* * Copyright (C) 2014 Dominik Schrmann <dominik@dominikschuermann.de> * Copyright (C) 2014 Vincent Breitmoser <v.breitmoser@mugenguild.com> * * 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.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.os.Messenger; import android.support.v4.app.FragmentActivity; import android.support.v4.app.LoaderManager; import android.support.v4.content.CursorLoader; import android.support.v4.content.Loader; import android.view.ActionMode; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.ListView; import android.widget.ViewAnimator; import org.sufficientlysecure.keychain.Constants; import org.sufficientlysecure.keychain.R; import org.sufficientlysecure.keychain.compatibility.DialogFragmentWorkaround; import org.sufficientlysecure.keychain.operations.results.EditKeyResult; import org.sufficientlysecure.keychain.provider.KeychainContract; import org.sufficientlysecure.keychain.provider.KeychainContract.UserPackets; import org.sufficientlysecure.keychain.service.SaveKeyringParcel; import org.sufficientlysecure.keychain.ui.adapter.UserIdsAdapter; import org.sufficientlysecure.keychain.ui.adapter.UserIdsAddedAdapter; import org.sufficientlysecure.keychain.ui.base.CryptoOperationHelper; import org.sufficientlysecure.keychain.ui.base.LoaderFragment; import org.sufficientlysecure.keychain.ui.dialog.AddUserIdDialogFragment; import org.sufficientlysecure.keychain.ui.dialog.EditUserIdDialogFragment; import org.sufficientlysecure.keychain.ui.dialog.SetPassphraseDialogFragment; import org.sufficientlysecure.keychain.ui.dialog.UserIdInfoDialogFragment; import org.sufficientlysecure.keychain.util.Log; public class ViewKeyAdvUserIdsFragment extends LoaderFragment implements LoaderManager.LoaderCallbacks<Cursor> { public static final String ARG_DATA_URI = "uri"; private static final int LOADER_ID_UNIFIED = 0; private static final int LOADER_ID_USER_IDS = 1; private ListView mUserIds; private ListView mUserIdsAddedList; private View mUserIdsAddedLayout; private ViewAnimator mUserIdAddFabLayout; private UserIdsAdapter mUserIdsAdapter; private UserIdsAddedAdapter mUserIdsAddedAdapter; private CryptoOperationHelper<SaveKeyringParcel, EditKeyResult> mEditKeyHelper; private Uri mDataUri; private long mMasterKeyId; private byte[] mFingerprint; private boolean mHasSecret; private SaveKeyringParcel mEditModeSaveKeyringParcel; @Override public View onCreateView(LayoutInflater inflater, ViewGroup superContainer, Bundle savedInstanceState) { View root = super.onCreateView(inflater, superContainer, savedInstanceState); View view = inflater.inflate(R.layout.view_key_adv_user_ids_fragment, getContainer()); mUserIds = (ListView) view.findViewById(R.id.view_key_user_ids); mUserIdsAddedList = (ListView) view.findViewById(R.id.view_key_user_ids_added); mUserIdsAddedLayout = view.findViewById(R.id.view_key_user_ids_add_layout); mUserIds.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { showOrEditUserIdInfo(position); } }); View footer = new View(getActivity()); int spacing = (int) android.util.TypedValue.applyDimension(android.util.TypedValue.COMPLEX_UNIT_DIP, 72, getResources().getDisplayMetrics()); android.widget.AbsListView.LayoutParams params = new android.widget.AbsListView.LayoutParams( android.widget.AbsListView.LayoutParams.MATCH_PARENT, spacing); footer.setLayoutParams(params); mUserIdsAddedList.addFooterView(footer, null, false); mUserIdAddFabLayout = (ViewAnimator) view.findViewById(R.id.view_key_subkey_fab_layout); view.findViewById(R.id.view_key_subkey_fab).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { addUserId(); } }); setHasOptionsMenu(true); return root; } private void showOrEditUserIdInfo(final int position) { if (mEditModeSaveKeyringParcel != null) { editUserId(position); } else { showUserIdInfo(position); } } private void editUserId(final int position) { final String userId = mUserIdsAdapter.getUserId(position); final boolean isRevoked = mUserIdsAdapter.getIsRevoked(position); final boolean isRevokedPending = mUserIdsAdapter.getIsRevokedPending(position); Handler returnHandler = new Handler() { @Override public void handleMessage(Message message) { switch (message.what) { case EditUserIdDialogFragment.MESSAGE_CHANGE_PRIMARY_USER_ID: // toggle if (mEditModeSaveKeyringParcel.mChangePrimaryUserId != null && mEditModeSaveKeyringParcel.mChangePrimaryUserId.equals(userId)) { mEditModeSaveKeyringParcel.mChangePrimaryUserId = null; } else { mEditModeSaveKeyringParcel.mChangePrimaryUserId = userId; } break; case EditUserIdDialogFragment.MESSAGE_REVOKE: // toggle if (mEditModeSaveKeyringParcel.mRevokeUserIds.contains(userId)) { mEditModeSaveKeyringParcel.mRevokeUserIds.remove(userId); } else { mEditModeSaveKeyringParcel.mRevokeUserIds.add(userId); // not possible to revoke and change to primary user id if (mEditModeSaveKeyringParcel.mChangePrimaryUserId != null && mEditModeSaveKeyringParcel.mChangePrimaryUserId.equals(userId)) { mEditModeSaveKeyringParcel.mChangePrimaryUserId = null; } } break; } getLoaderManager().getLoader(LOADER_ID_USER_IDS).forceLoad(); } }; // Create a new Messenger for the communication back final Messenger messenger = new Messenger(returnHandler); DialogFragmentWorkaround.INTERFACE.runnableRunDelayed(new Runnable() { public void run() { EditUserIdDialogFragment dialogFragment = EditUserIdDialogFragment.newInstance(messenger, isRevoked, isRevokedPending); dialogFragment.show(getActivity().getSupportFragmentManager(), "editUserIdDialog"); } }); } private void showUserIdInfo(final int position) { final boolean isRevoked = mUserIdsAdapter.getIsRevoked(position); final int isVerified = mUserIdsAdapter.getIsVerified(position); DialogFragmentWorkaround.INTERFACE.runnableRunDelayed(new Runnable() { public void run() { UserIdInfoDialogFragment dialogFragment = UserIdInfoDialogFragment.newInstance(isRevoked, isVerified); dialogFragment.show(getActivity().getSupportFragmentManager(), "userIdInfoDialog"); } }); } private void addUserId() { Handler returnHandler = new Handler() { @Override public void handleMessage(Message message) { if (message.what == SetPassphraseDialogFragment.MESSAGE_OKAY) { Bundle data = message.getData(); // add new user id mUserIdsAddedAdapter.add(data.getString(AddUserIdDialogFragment.MESSAGE_DATA_USER_ID)); } } }; // Create a new Messenger for the communication back Messenger messenger = new Messenger(returnHandler); // pre-fill out primary name AddUserIdDialogFragment addUserIdDialog = AddUserIdDialogFragment.newInstance(messenger, ""); addUserIdDialog.show(getActivity().getSupportFragmentManager(), "addUserIdDialog"); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); Uri dataUri = getArguments().getParcelable(ARG_DATA_URI); if (dataUri == null) { Log.e(Constants.TAG, "Data missing. Should be Uri of key!"); getActivity().finish(); return; } loadData(dataUri); } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { if (mEditKeyHelper != null) { mEditKeyHelper.handleActivityResult(requestCode, resultCode, data); } super.onActivityResult(requestCode, resultCode, data); } private void loadData(Uri dataUri) { mDataUri = dataUri; Log.i(Constants.TAG, "mDataUri: " + mDataUri); mUserIdsAdapter = new UserIdsAdapter(getActivity(), null, 0); mUserIds.setAdapter(mUserIdsAdapter); // Prepare the loaders. Either re-connect with an existing ones, // or start new ones. getLoaderManager().initLoader(LOADER_ID_UNIFIED, null, this); getLoaderManager().initLoader(LOADER_ID_USER_IDS, null, this); } // These are the rows that we will retrieve. static final String[] PROJECTION = new String[] { KeychainContract.KeyRings._ID, KeychainContract.KeyRings.MASTER_KEY_ID, KeychainContract.KeyRings.HAS_ANY_SECRET, KeychainContract.KeyRings.FINGERPRINT, }; static final int INDEX_MASTER_KEY_ID = 1; static final int INDEX_HAS_ANY_SECRET = 2; static final int INDEX_FINGERPRINT = 3; public Loader<Cursor> onCreateLoader(int id, Bundle args) { switch (id) { case LOADER_ID_UNIFIED: { Uri baseUri = KeychainContract.KeyRings.buildUnifiedKeyRingUri(mDataUri); return new CursorLoader(getActivity(), baseUri, PROJECTION, null, null, null); } case LOADER_ID_USER_IDS: { setContentShown(false); Uri userIdUri = UserPackets.buildUserIdsUri(mDataUri); return new CursorLoader(getActivity(), userIdUri, UserIdsAdapter.USER_PACKETS_PROJECTION, null, null, null); } default: return null; } } public void onLoadFinished(Loader<Cursor> loader, Cursor data) { // Avoid NullPointerExceptions, if we get an empty result set. if (data.getCount() == 0) { return; } switch (loader.getId()) { case LOADER_ID_UNIFIED: { data.moveToFirst(); mMasterKeyId = data.getLong(INDEX_MASTER_KEY_ID); mHasSecret = data.getInt(INDEX_HAS_ANY_SECRET) != 0; mFingerprint = data.getBlob(INDEX_FINGERPRINT); break; } case LOADER_ID_USER_IDS: { // Swap the new cursor in. (The framework will take care of closing the // old cursor once we return.) mUserIdsAdapter.swapCursor(data); setContentShown(true); break; } } } /** * This is called when the last Cursor provided to onLoadFinished() above is about to be closed. * We need to make sure we are no longer using it. */ public void onLoaderReset(Loader<Cursor> loader) { if (loader.getId() != LOADER_ID_USER_IDS) { return; } mUserIdsAdapter.swapCursor(null); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.menu_action_mode_edit: enterEditMode(); return true; default: return super.onOptionsItemSelected(item); } } public void enterEditMode() { FragmentActivity activity = getActivity(); if (activity == null) { return; } activity.startActionMode(new ActionMode.Callback() { @Override public boolean onCreateActionMode(ActionMode mode, Menu menu) { mEditModeSaveKeyringParcel = new SaveKeyringParcel(mMasterKeyId, mFingerprint); mUserIdsAddedAdapter = new UserIdsAddedAdapter(getActivity(), mEditModeSaveKeyringParcel.mAddUserIds, false); mUserIdsAddedList.setAdapter(mUserIdsAddedAdapter); mUserIdsAddedLayout.setVisibility(View.VISIBLE); mUserIdAddFabLayout.setDisplayedChild(1); mUserIdsAdapter.setEditMode(mEditModeSaveKeyringParcel); getLoaderManager().restartLoader(LOADER_ID_USER_IDS, null, ViewKeyAdvUserIdsFragment.this); mode.setTitle(R.string.title_edit_identities); mode.getMenuInflater().inflate(R.menu.action_edit_uids, menu); return true; } @Override public boolean onPrepareActionMode(ActionMode mode, Menu menu) { return false; } @Override public boolean onActionItemClicked(ActionMode mode, MenuItem item) { editKey(mode); return true; } @Override public void onDestroyActionMode(ActionMode mode) { mEditModeSaveKeyringParcel = null; mUserIdsAdapter.setEditMode(null); mUserIdsAddedLayout.setVisibility(View.GONE); mUserIdAddFabLayout.setDisplayedChild(0); getLoaderManager().restartLoader(LOADER_ID_USER_IDS, null, ViewKeyAdvUserIdsFragment.this); } }); } private void editKey(final ActionMode mode) { CryptoOperationHelper.Callback<SaveKeyringParcel, EditKeyResult> editKeyCallback = new CryptoOperationHelper.Callback<SaveKeyringParcel, EditKeyResult>() { @Override public SaveKeyringParcel createOperationInput() { return mEditModeSaveKeyringParcel; } @Override public void onCryptoOperationSuccess(EditKeyResult result) { mode.finish(); result.createNotify(getActivity()).show(); } @Override public void onCryptoOperationCancelled() { mode.finish(); } @Override public void onCryptoOperationError(EditKeyResult result) { mode.finish(); result.createNotify(getActivity()).show(); } @Override public boolean onCryptoSetProgress(String msg, int progress, int max) { return false; } }; mEditKeyHelper = new CryptoOperationHelper<>(1, this, editKeyCallback, R.string.progress_saving); mEditKeyHelper.cryptoOperation(); } }