Java tutorial
/** * ownCloud Android client application * * Copyright (C) 2015 ownCloud Inc. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2, * as published by the Free Software Foundation. * * 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 com.cerema.cloud2.ui.activity; import android.accounts.Account; import android.accounts.AccountManager; import android.accounts.AuthenticatorException; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.res.Resources.NotFoundException; import android.os.Bundle; import android.os.Parcelable; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentTransaction; import android.support.v7.app.ActionBar; import android.util.Log; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.ProgressBar; import android.widget.Toast; import com.cerema.cloud2.R; import com.cerema.cloud2.datamodel.OCFile; import com.cerema.cloud2.lib.common.OwnCloudAccount; import com.cerema.cloud2.lib.common.OwnCloudClient; import com.cerema.cloud2.lib.common.OwnCloudClientManagerFactory; import com.cerema.cloud2.lib.common.OwnCloudCredentials; import com.cerema.cloud2.lib.common.accounts.AccountUtils.AccountNotFoundException; import com.cerema.cloud2.lib.common.operations.RemoteOperation; import com.cerema.cloud2.lib.common.operations.RemoteOperationResult; import com.cerema.cloud2.lib.common.operations.RemoteOperationResult.ResultCode; import com.cerema.cloud2.lib.common.utils.Log_OC; import com.cerema.cloud2.operations.CreateFolderOperation; import com.cerema.cloud2.operations.RefreshFolderOperation; import com.cerema.cloud2.syncadapter.FileSyncAdapter; import com.cerema.cloud2.ui.dialog.CreateFolderDialogFragment; import com.cerema.cloud2.ui.fragment.FileFragment; import com.cerema.cloud2.ui.fragment.OCFileListFragment; import com.cerema.cloud2.utils.ErrorMessageAdapter; public class FolderPickerActivity extends FileActivity implements FileFragment.ContainerActivity, OnClickListener, OnEnforceableRefreshListener { public static final String EXTRA_FOLDER = UploadFilesActivity.class.getCanonicalName() + ".EXTRA_FOLDER"; public static final String EXTRA_FILE = UploadFilesActivity.class.getCanonicalName() + ".EXTRA_FILE"; //TODO: Think something better private SyncBroadcastReceiver mSyncBroadcastReceiver; private static final String TAG = FolderPickerActivity.class.getSimpleName(); private static final String TAG_LIST_OF_FOLDERS = "LIST_OF_FOLDERS"; private boolean mSyncInProgress = false; protected Button mCancelBtn; protected Button mChooseBtn; private ProgressBar mProgressBar; @Override protected void onCreate(Bundle savedInstanceState) { Log_OC.d(TAG, "onCreate() start"); super.onCreate(savedInstanceState); setContentView(R.layout.files_folder_picker); if (savedInstanceState == null) { createFragments(); } // sets callback listeners for UI elements initControls(); // Action bar setup ActionBar actionBar = getSupportActionBar(); actionBar.setDisplayShowTitleEnabled(true); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD); mProgressBar = (ProgressBar) findViewById(R.id.progressBar); mProgressBar.setIndeterminateDrawable( getResources().getDrawable(R.drawable.actionbar_progress_indeterminate_horizontal)); mProgressBar.setIndeterminate(mSyncInProgress); // always AFTER setContentView(...) ; to work around bug in its implementation // sets message for empty list of folders setBackgroundText(); Log_OC.d(TAG, "onCreate() end"); } @Override protected void onStart() { super.onStart(); } /** * Called when the ownCloud {@link Account} associated to the Activity was just updated. */ @Override protected void onAccountSet(boolean stateWasRecovered) { super.onAccountSet(stateWasRecovered); if (getAccount() != null) { updateFileFromDB(); OCFile folder = getFile(); if (folder == null || !folder.isFolder()) { // fall back to root folder setFile(getStorageManager().getFileByPath(OCFile.ROOT_PATH)); folder = getFile(); } if (!stateWasRecovered) { OCFileListFragment listOfFolders = getListOfFilesFragment(); listOfFolders.listDirectory(folder/*, false*/); startSyncFolderOperation(folder, false); } updateNavigationElementsInActionBar(); } } private void createFragments() { OCFileListFragment listOfFiles = new OCFileListFragment(); Bundle args = new Bundle(); args.putBoolean(OCFileListFragment.ARG_JUST_FOLDERS, true); args.putBoolean(OCFileListFragment.ARG_ALLOW_CONTEXTUAL_ACTIONS, false); args.putBoolean(OCFileListFragment.ARG_HIDE_FAB, true); listOfFiles.setArguments(args); FragmentTransaction transaction = getSupportFragmentManager().beginTransaction(); transaction.add(R.id.fragment_container, listOfFiles, TAG_LIST_OF_FOLDERS); transaction.commit(); } /** * Show a text message on screen view for notifying user if content is * loading or folder is empty */ private void setBackgroundText() { OCFileListFragment listFragment = getListOfFilesFragment(); if (listFragment != null) { int message = R.string.file_list_loading; if (!mSyncInProgress) { // In case folder list is empty message = R.string.file_list_empty_moving; } listFragment.setMessageForEmptyList(getString(message)); } else { Log.e(TAG, "OCFileListFragment is null"); } } protected OCFileListFragment getListOfFilesFragment() { Fragment listOfFiles = getSupportFragmentManager() .findFragmentByTag(FolderPickerActivity.TAG_LIST_OF_FOLDERS); if (listOfFiles != null) { return (OCFileListFragment) listOfFiles; } Log_OC.wtf(TAG, "Access to unexisting list of files fragment!!"); return null; } /** * {@inheritDoc} * * Updates action bar and second fragment, if in dual pane mode. */ @Override public void onBrowsedDownTo(OCFile directory) { setFile(directory); updateNavigationElementsInActionBar(); // Sync Folder startSyncFolderOperation(directory, false); } public void startSyncFolderOperation(OCFile folder, boolean ignoreETag) { long currentSyncTime = System.currentTimeMillis(); mSyncInProgress = true; // perform folder synchronization RemoteOperation synchFolderOp = new RefreshFolderOperation(folder, currentSyncTime, false, getFileOperationsHelper().isSharedSupported(), ignoreETag, getStorageManager(), getAccount(), getApplicationContext()); synchFolderOp.execute(getAccount(), this, null, null); mProgressBar.setIndeterminate(true); setBackgroundText(); } @Override protected void onResume() { super.onResume(); Log_OC.e(TAG, "onResume() start"); // refresh list of files refreshListOfFilesFragment(); // Listen for sync messages IntentFilter syncIntentFilter = new IntentFilter(FileSyncAdapter.EVENT_FULL_SYNC_START); syncIntentFilter.addAction(FileSyncAdapter.EVENT_FULL_SYNC_END); syncIntentFilter.addAction(FileSyncAdapter.EVENT_FULL_SYNC_FOLDER_CONTENTS_SYNCED); syncIntentFilter.addAction(RefreshFolderOperation.EVENT_SINGLE_FOLDER_CONTENTS_SYNCED); syncIntentFilter.addAction(RefreshFolderOperation.EVENT_SINGLE_FOLDER_SHARES_SYNCED); mSyncBroadcastReceiver = new SyncBroadcastReceiver(); registerReceiver(mSyncBroadcastReceiver, syncIntentFilter); Log_OC.d(TAG, "onResume() end"); } @Override protected void onPause() { Log_OC.e(TAG, "onPause() start"); if (mSyncBroadcastReceiver != null) { unregisterReceiver(mSyncBroadcastReceiver); //LocalBroadcastManager.getInstance(this).unregisterReceiver(mSyncBroadcastReceiver); mSyncBroadcastReceiver = null; } Log_OC.d(TAG, "onPause() end"); super.onPause(); } @Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.main_menu, menu); menu.findItem(R.id.action_sort).setVisible(false); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { boolean retval = true; switch (item.getItemId()) { case R.id.action_create_dir: { CreateFolderDialogFragment dialog = CreateFolderDialogFragment.newInstance(getCurrentFolder()); dialog.show(getSupportFragmentManager(), CreateFolderDialogFragment.CREATE_FOLDER_FRAGMENT); break; } case android.R.id.home: { OCFile currentDir = getCurrentFolder(); if (currentDir != null && currentDir.getParentId() != 0) { onBackPressed(); } break; } default: retval = super.onOptionsItemSelected(item); } return retval; } protected OCFile getCurrentFolder() { OCFile file = getFile(); if (file != null) { if (file.isFolder()) { return file; } else if (getStorageManager() != null) { String parentPath = file.getRemotePath().substring(0, file.getRemotePath().lastIndexOf(file.getFileName())); return getStorageManager().getFileByPath(parentPath); } } return null; } protected void refreshListOfFilesFragment() { OCFileListFragment fileListFragment = getListOfFilesFragment(); if (fileListFragment != null) { fileListFragment.listDirectory(); // TODO Enable when "On Device" is recovered ? // fileListFragment.listDirectory(false); } } public void browseToRoot() { OCFileListFragment listOfFiles = getListOfFilesFragment(); if (listOfFiles != null) { // should never be null, indeed OCFile root = getStorageManager().getFileByPath(OCFile.ROOT_PATH); listOfFiles.listDirectory(root); // TODO Enable when "On Device" is recovered ? // listOfFiles.listDirectory(root, false); setFile(listOfFiles.getCurrentFile()); updateNavigationElementsInActionBar(); startSyncFolderOperation(root, false); } } @Override public void onBackPressed() { OCFileListFragment listOfFiles = getListOfFilesFragment(); if (listOfFiles != null) { // should never be null, indeed int levelsUp = listOfFiles.onBrowseUp(); if (levelsUp == 0) { finish(); return; } setFile(listOfFiles.getCurrentFile()); updateNavigationElementsInActionBar(); } } protected void updateNavigationElementsInActionBar() { ActionBar actionBar = getSupportActionBar(); OCFile currentDir = getCurrentFolder(); boolean atRoot = (currentDir == null || currentDir.getParentId() == 0); actionBar.setDisplayHomeAsUpEnabled(!atRoot); actionBar.setHomeButtonEnabled(!atRoot); actionBar.setTitle( atRoot ? getString(R.string.default_display_name_for_root_folder) : currentDir.getFileName()); } /** * Set per-view controllers */ private void initControls() { mCancelBtn = (Button) findViewById(R.id.folder_picker_btn_cancel); mCancelBtn.setOnClickListener(this); mChooseBtn = (Button) findViewById(R.id.folder_picker_btn_choose); mChooseBtn.setOnClickListener(this); } @Override public void onClick(View v) { if (v == mCancelBtn) { finish(); } else if (v == mChooseBtn) { Intent i = getIntent(); Parcelable targetFile = i.getParcelableExtra(FolderPickerActivity.EXTRA_FILE); Intent data = new Intent(); data.putExtra(EXTRA_FOLDER, getCurrentFolder()); if (targetFile != null) { data.putExtra(EXTRA_FILE, targetFile); } setResult(RESULT_OK, data); finish(); } } @Override public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) { super.onRemoteOperationFinish(operation, result); if (operation instanceof CreateFolderOperation) { onCreateFolderOperationFinish((CreateFolderOperation) operation, result); } } /** * Updates the view associated to the activity after the finish of an operation trying * to create a new folder. * * @param operation Creation operation performed. * @param result Result of the creation. */ private void onCreateFolderOperationFinish(CreateFolderOperation operation, RemoteOperationResult result) { if (result.isSuccess()) { refreshListOfFilesFragment(); } else { try { Toast msg = Toast.makeText(FolderPickerActivity.this, ErrorMessageAdapter.getErrorCauseMessage(result, operation, getResources()), Toast.LENGTH_LONG); msg.show(); } catch (NotFoundException e) { Log_OC.e(TAG, "Error while trying to show fail message ", e); } } } private class SyncBroadcastReceiver extends BroadcastReceiver { /** * {@link BroadcastReceiver} to enable syncing feedback in UI */ @Override public void onReceive(Context context, Intent intent) { try { String event = intent.getAction(); Log_OC.d(TAG, "Received broadcast " + event); String accountName = intent.getStringExtra(FileSyncAdapter.EXTRA_ACCOUNT_NAME); String synchFolderRemotePath = intent.getStringExtra(FileSyncAdapter.EXTRA_FOLDER_PATH); RemoteOperationResult synchResult = (RemoteOperationResult) intent .getSerializableExtra(FileSyncAdapter.EXTRA_RESULT); boolean sameAccount = (getAccount() != null && accountName.equals(getAccount().name) && getStorageManager() != null); if (sameAccount) { if (FileSyncAdapter.EVENT_FULL_SYNC_START.equals(event)) { mSyncInProgress = true; } else { OCFile currentFile = (getFile() == null) ? null : getStorageManager().getFileByPath(getFile().getRemotePath()); OCFile currentDir = (getCurrentFolder() == null) ? null : getStorageManager().getFileByPath(getCurrentFolder().getRemotePath()); if (currentDir == null) { // current folder was removed from the server Toast.makeText(FolderPickerActivity.this, String.format(getString(R.string.sync_current_folder_was_removed), getCurrentFolder().getFileName()), Toast.LENGTH_LONG).show(); browseToRoot(); } else { if (currentFile == null && !getFile().isFolder()) { // currently selected file was removed in the server, and now we know it currentFile = currentDir; } if (synchFolderRemotePath != null && currentDir.getRemotePath().equals(synchFolderRemotePath)) { OCFileListFragment fileListFragment = getListOfFilesFragment(); if (fileListFragment != null) { fileListFragment.listDirectory(currentDir); // TODO Enable when "On Device" is recovered ? // fileListFragment.listDirectory(currentDir, false); } } setFile(currentFile); } mSyncInProgress = (!FileSyncAdapter.EVENT_FULL_SYNC_END.equals(event) && !RefreshFolderOperation.EVENT_SINGLE_FOLDER_SHARES_SYNCED.equals(event)); if (RefreshFolderOperation.EVENT_SINGLE_FOLDER_CONTENTS_SYNCED.equals(event) && /// TODO refactor and make common synchResult != null && !synchResult.isSuccess() && (synchResult.getCode() == ResultCode.UNAUTHORIZED || synchResult.isIdPRedirection() || (synchResult.isException() && synchResult.getException() instanceof AuthenticatorException))) { requestCredentialsUpdate(context); } } removeStickyBroadcast(intent); Log_OC.d(TAG, "Setting progress visibility to " + mSyncInProgress); mProgressBar.setIndeterminate(mSyncInProgress); setBackgroundText(); } } catch (RuntimeException e) { // avoid app crashes after changing the serial id of RemoteOperationResult // in owncloud library with broadcast notifications pending to process removeStickyBroadcast(intent); } } } /** * Shows the information of the {@link OCFile} received as a * parameter in the second fragment. * * @param file {@link OCFile} whose details will be shown */ @Override public void showDetails(OCFile file) { } /** * {@inheritDoc} */ @Override public void onTransferStateChanged(OCFile file, boolean downloading, boolean uploading) { } @Override public void onRefresh() { refreshList(true); } @Override public void onRefresh(boolean enforced) { refreshList(enforced); } private void refreshList(boolean ignoreETag) { OCFileListFragment listOfFiles = getListOfFilesFragment(); if (listOfFiles != null) { OCFile folder = listOfFiles.getCurrentFile(); if (folder != null) { startSyncFolderOperation(folder, ignoreETag); } } } }