Java tutorial
/* * Copyright (C) 2017 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.remote.ui.dialog; import java.util.List; import android.content.Context; import android.content.pm.ApplicationInfo; import android.content.pm.PackageManager; import android.content.pm.PackageManager.NameNotFoundException; import android.graphics.drawable.Drawable; import android.os.Bundle; import android.support.v4.app.LoaderManager; import android.support.v4.app.LoaderManager.LoaderCallbacks; import android.support.v4.content.Loader; import org.sufficientlysecure.keychain.Constants; import org.sufficientlysecure.keychain.provider.AutocryptPeerDataAccessObject; import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings; import org.sufficientlysecure.keychain.remote.ui.dialog.KeyLoader.KeyInfo; import org.sufficientlysecure.keychain.remote.ui.dialog.KeyLoader.KeySelector; import org.sufficientlysecure.keychain.util.Log; class RemoteDeduplicatePresenter implements LoaderCallbacks<List<KeyInfo>> { private final PackageManager packageManager; private final Context context; private final int loaderId; private AutocryptPeerDataAccessObject autocryptPeerDao; private String duplicateAddress; private RemoteDeduplicateView view; private Integer selectedItem; private List<KeyInfo> keyInfoData; RemoteDeduplicatePresenter(Context context, int loaderId) { this.context = context; packageManager = context.getPackageManager(); this.loaderId = loaderId; } public void setView(RemoteDeduplicateView view) { this.view = view; } void setupFromIntentData(String packageName, String duplicateAddress) { try { setPackageInfo(packageName); } catch (NameNotFoundException e) { Log.e(Constants.TAG, "Unable to find info of calling app!"); view.finishAsCancelled(); return; } autocryptPeerDao = new AutocryptPeerDataAccessObject(context, packageName); this.duplicateAddress = duplicateAddress; view.setAddressText(duplicateAddress); } private void setPackageInfo(String packageName) throws NameNotFoundException { ApplicationInfo applicationInfo = packageManager.getApplicationInfo(packageName, 0); Drawable appIcon = packageManager.getApplicationIcon(applicationInfo); view.setTitleClientIcon(appIcon); } void startLoaders(LoaderManager loaderManager) { loaderManager.restartLoader(loaderId, null, this); } @Override public Loader<List<KeyInfo>> onCreateLoader(int id, Bundle args) { KeySelector keySelector = KeySelector.create(KeyRings.buildUnifiedKeyRingsFindByEmailUri(duplicateAddress), null); return new KeyLoader(context, context.getContentResolver(), keySelector); } @Override public void onLoadFinished(Loader<List<KeyInfo>> loader, List<KeyInfo> data) { this.keyInfoData = data; view.setKeyListData(data); } @Override public void onLoaderReset(Loader loader) { if (view != null) { view.setKeyListData(null); } } void onClickSelect() { if (keyInfoData == null) { Log.e(Constants.TAG, "got click on select with no data?"); return; } if (selectedItem == null) { Log.e(Constants.TAG, "got click on select with no selection?"); return; } long masterKeyId = keyInfoData.get(selectedItem).getMasterKeyId(); autocryptPeerDao.updateToSelectedState(duplicateAddress, masterKeyId); view.finish(); } void onClickCancel() { view.finishAsCancelled(); } public void onCancel() { view.finishAsCancelled(); } void onKeyItemClick(int position) { if (selectedItem != null && position == selectedItem) { selectedItem = null; } else { selectedItem = position; } view.setActiveItem(selectedItem); view.setEnableSelectButton(selectedItem != null); } interface RemoteDeduplicateView { void finish(); void finishAsCancelled(); void setAddressText(String text); void setTitleClientIcon(Drawable drawable); void setKeyListData(List<KeyInfo> data); void setActiveItem(Integer position); void setEnableSelectButton(boolean enabled); } }