+/* ownCloud Android client application
+ * Copyright (C) 2012-2013 ownCloud Inc.
+ *
+ * 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 2 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 com.owncloud.android.ui.preview;
+
+import java.io.File;
+import java.lang.ref.WeakReference;
+import java.util.ArrayList;
+import java.util.List;
+
+
+import android.accounts.Account;
+import android.annotation.SuppressLint;
+import android.app.Activity;
+import android.content.ActivityNotFoundException;
+import android.content.Intent;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.BitmapFactory.Options;
+import android.graphics.Point;
+import android.net.Uri;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.os.Handler;
+import android.util.Log;
+import android.view.Display;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.webkit.MimeTypeMap;
+import android.widget.ImageView;
+import android.widget.Toast;
+
+import com.actionbarsherlock.app.SherlockFragment;
+import com.actionbarsherlock.view.Menu;
+import com.actionbarsherlock.view.MenuInflater;
+import com.actionbarsherlock.view.MenuItem;
+import com.owncloud.android.datamodel.FileDataStorageManager;
+import com.owncloud.android.datamodel.OCFile;
+import com.owncloud.android.network.OwnCloudClientUtils;
+import com.owncloud.android.operations.OnRemoteOperationListener;
+import com.owncloud.android.operations.RemoteOperation;
+import com.owncloud.android.operations.RemoteOperationResult;
+import com.owncloud.android.operations.RemoveFileOperation;
+import com.owncloud.android.ui.fragment.ConfirmationDialogFragment;
+import com.owncloud.android.ui.fragment.FileFragment;
+import com.owncloud.android.ui.fragment.ConfirmationDialogFragment.ConfirmationDialogFragmentListener;
+import com.owncloud.android.ui.fragment.FileFragment.ContainerActivity;
+
+import com.owncloud.android.R;
+import eu.alefzero.webdav.WebdavClient;
+import eu.alefzero.webdav.WebdavUtils;
+
+
+/**
+ * This fragment shows a preview of a downloaded image.
+ *
+ * Trying to get an instance with NULL {@link OCFile} or ownCloud {@link Account} values will produce an {@link IllegalStateException}.
+ *
+ * If the {@link OCFile} passed is not downloaded, an {@link IllegalStateException} is generated on instantiation too.
+ *
+ * @author David A. Velasco
+ */
+public class PreviewImageFragment extends SherlockFragment implements FileFragment,
+ OnRemoteOperationListener,
+ ConfirmationDialogFragment.ConfirmationDialogFragmentListener{
+ public static final String EXTRA_FILE = "FILE";
+ public static final String EXTRA_ACCOUNT = "ACCOUNT";
+
+ private View mView;
+ private OCFile mFile;
+ private Account mAccount;
+ private FileDataStorageManager mStorageManager;
+ private ImageView mImageView;
+ public Bitmap mBitmap = null;
+
+ private Handler mHandler;
+ private RemoteOperation mLastRemoteOperation;
+
+ private static final String TAG = PreviewImageFragment.class.getSimpleName();
+
+
+ /**
+ * Creates a fragment to preview an image.
+ *
+ * When 'imageFile' or 'ocAccount' are null
+ *
+ * @param imageFile An {@link OCFile} to preview as an image in the fragment
+ * @param ocAccount An ownCloud account; needed to start downloads
+ */
+ public PreviewImageFragment(OCFile fileToDetail, Account ocAccount) {
+ mFile = fileToDetail;
+ mAccount = ocAccount;
+ mStorageManager = null; // we need a context to init this; the container activity is not available yet at this moment
+ }
+
+
+ /**
+ * Creates an empty fragment for image previews.
+ *
+ * MUST BE KEPT: the system uses it when tries to reinstantiate a fragment automatically (for instance, when the device is turned a aside).
+ *
+ * DO NOT CALL IT: an {@link OCFile} and {@link Account} must be provided for a successful construction
+ */
+ public PreviewImageFragment() {
+ mFile = null;
+ mAccount = null;
+ mStorageManager = null;
+ }
+
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ Log.e(TAG, "PREVIEW_IMAGE_FRAGMENT ONCREATE " + ((mFile == null)? "(NULL)" : mFile.getFileName()));
+ mHandler = new Handler();
+ setHasOptionsMenu(true);
+ }
+
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public View onCreateView(LayoutInflater inflater, ViewGroup container,
+ Bundle savedInstanceState) {
+ super.onCreateView(inflater, container, savedInstanceState);
+ mView = inflater.inflate(R.layout.preview_image_fragment, container, false);
+ mImageView = (ImageView)mView.findViewById(R.id.image);
+ return mView;
+ }
+
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public void onAttach(Activity activity) {
+ super.onAttach(activity);
+ if (!(activity instanceof FileFragment.ContainerActivity))
+ throw new ClassCastException(activity.toString() + " must implement " + FileFragment.ContainerActivity.class.getSimpleName());
+ }
+
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public void onActivityCreated(Bundle savedInstanceState) {
+ super.onActivityCreated(savedInstanceState);
+ mStorageManager = new FileDataStorageManager(mAccount, getActivity().getApplicationContext().getContentResolver());
+ if (savedInstanceState != null) {
+ mFile = savedInstanceState.getParcelable(PreviewImageFragment.EXTRA_FILE);
+ mAccount = savedInstanceState.getParcelable(PreviewImageFragment.EXTRA_ACCOUNT);
+
+ }
+ if (mFile == null) {
+ throw new IllegalStateException("Instanced with a NULL OCFile");
+ }
+ if (mAccount == null) {
+ throw new IllegalStateException("Instanced with a NULL ownCloud Account");
+ }
+ if (!mFile.isDown()) {
+ throw new IllegalStateException("There is no local file to preview");
+ }
+ }
+
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public void onSaveInstanceState(Bundle outState) {
+ super.onSaveInstanceState(outState);
+ outState.putParcelable(PreviewImageFragment.EXTRA_FILE, mFile);
+ outState.putParcelable(PreviewImageFragment.EXTRA_ACCOUNT, mAccount);
+ }
+
+
+ @Override
+ public void onStart() {
+ super.onStart();
+ Log.e(TAG, "PREVIEW_IMAGE_FRAGMENT ONSTART " + mFile.getFileName());
+ if (mFile != null) {
+ BitmapLoader bl = new BitmapLoader(mImageView);
+ bl.execute(new String[]{mFile.getStoragePath()});
+ }
+ }
+
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+ super.onCreateOptionsMenu(menu, inflater);
+
+ inflater.inflate(R.menu.file_actions_menu, menu);
+ List<Integer> toHide = new ArrayList<Integer>();
+
+ MenuItem item = null;
+ toHide.add(R.id.action_cancel_download);
+ toHide.add(R.id.action_cancel_upload);
+ toHide.add(R.id.action_download_file);
+ toHide.add(R.id.action_rename_file); // by now
+
+ for (int i : toHide) {
+ item = menu.findItem(i);
+ if (item != null) {
+ item.setVisible(false);
+ item.setEnabled(false);
+ }
+ }
+
+ }
+
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public boolean onOptionsItemSelected(MenuItem item) {
+ switch (item.getItemId()) {
+ case R.id.action_open_file_with: {
+ openFile();
+ return true;
+ }
+ case R.id.action_remove_file: {
+ removeFile();
+ return true;
+ }
+ case R.id.action_see_details: {
+ seeDetails();
+ return true;
+ }
+
+ default:
+ return false;
+ }
+ }
+
+
+ private void seeDetails() {
+ ((FileFragment.ContainerActivity)getActivity()).showFragmentWithDetails(mFile);
+ }
+
+
+ @Override
+ public void onResume() {
+ super.onResume();
+ Log.e(TAG, "PREVIEW_IMAGE_FRAGMENT ONRESUME " + mFile.getFileName());
+ /*
+ mDownloadFinishReceiver = new DownloadFinishReceiver();
+ IntentFilter filter = new IntentFilter(
+ FileDownloader.DOWNLOAD_FINISH_MESSAGE);
+ getActivity().registerReceiver(mDownloadFinishReceiver, filter);
+
+ mUploadFinishReceiver = new UploadFinishReceiver();
+ filter = new IntentFilter(FileUploader.UPLOAD_FINISH_MESSAGE);
+ getActivity().registerReceiver(mUploadFinishReceiver, filter);
+ */
+
+ }
+
+
+ @Override
+ public void onPause() {
+ Log.e(TAG, "PREVIEW_IMAGE_FRAGMENT ONPAUSE " + mFile.getFileName());
+ super.onPause();
+ /*
+ if (mVideoPreview.getVisibility() == View.VISIBLE) {
+ mSavedPlaybackPosition = mVideoPreview.getCurrentPosition();
+ }*/
+ /*
+ getActivity().unregisterReceiver(mDownloadFinishReceiver);
+ mDownloadFinishReceiver = null;
+
+ getActivity().unregisterReceiver(mUploadFinishReceiver);
+ mUploadFinishReceiver = null;
+ */
+ }
+
+
+ @Override
+ public void onStop() {
+ super.onStop();
+ Log.e(TAG, "PREVIEW_IMAGE_FRAGMENT ONSTOP " + mFile.getFileName());
+ }
+
+ @Override
+ public void onDestroy() {
+ super.onDestroy();
+ Log.e(TAG, "PREVIEW_IMAGE_FRAGMENT ONDESTROY " + mFile.getFileName());
+ if (mBitmap != null) {
+ mBitmap.recycle();
+ }
+ }
+
+
+ /**
+ * Opens the previewed image with an external application.
+ *
+ * TODO - improve this; instead of prioritize the actions available for the MIME type in the server,
+ * we should get a list of available apps for MIME tpye in the server and join it with the list of
+ * available apps for the MIME type known from the file extension, to let the user choose
+ */
+ private void openFile() {
+ String storagePath = mFile.getStoragePath();
+ String encodedStoragePath = WebdavUtils.encodePath(storagePath);
+ try {
+ Intent i = new Intent(Intent.ACTION_VIEW);
+ i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mFile.getMimetype());
+ i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
+ startActivity(i);
+
+ } catch (Throwable t) {
+ Log.e(TAG, "Fail when trying to open with the mimeType provided from the ownCloud server: " + mFile.getMimetype());
+ boolean toastIt = true;
+ String mimeType = "";
+ try {
+ Intent i = new Intent(Intent.ACTION_VIEW);
+ mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(storagePath.substring(storagePath.lastIndexOf('.') + 1));
+ if (mimeType == null || !mimeType.equals(mFile.getMimetype())) {
+ if (mimeType != null) {
+ i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mimeType);
+ } else {
+ // desperate try
+ i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), "*-/*");
+ }
+ i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
+ startActivity(i);
+ toastIt = false;
+ }
+
+ } catch (IndexOutOfBoundsException e) {
+ Log.e(TAG, "Trying to find out MIME type of a file without extension: " + storagePath);
+
+ } catch (ActivityNotFoundException e) {
+ Log.e(TAG, "No activity found to handle: " + storagePath + " with MIME type " + mimeType + " obtained from extension");
+
+ } catch (Throwable th) {
+ Log.e(TAG, "Unexpected problem when opening: " + storagePath, th);
+
+ } finally {
+ if (toastIt) {
+ Toast.makeText(getActivity(), "There is no application to handle file " + mFile.getFileName(), Toast.LENGTH_SHORT).show();
+ }
+ }
+
+ }
+ finish();
+ }
+
+
+ /**
+ * Starts a the removal of the previewed file.
+ *
+ * Shows a confirmation dialog. The action continues in {@link #onConfirmation(String)} , {@link #onNeutral(String)} or {@link #onCancel(String)},
+ * depending upon the user selection in the dialog.
+ */
+ private void removeFile() {
+ ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
+ R.string.confirmation_remove_alert,
+ new String[]{mFile.getFileName()},
+ R.string.confirmation_remove_remote_and_local,
+ R.string.confirmation_remove_local,
+ R.string.common_cancel);
+ confDialog.setOnConfirmationListener(this);
+ confDialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
+ }
+
+
+ /**
+ * Performs the removal of the previewed file, both locally and in the server.
+ */
+ @Override
+ public void onConfirmation(String callerTag) {
+ if (mStorageManager.getFileById(mFile.getFileId()) != null) { // check that the file is still there;
+ mLastRemoteOperation = new RemoveFileOperation( mFile, // TODO we need to review the interface with RemoteOperations, and use OCFile IDs instead of OCFile objects as parameters
+ true,
+ mStorageManager);
+ WebdavClient wc = OwnCloudClientUtils.createOwnCloudClient(mAccount, getSherlockActivity().getApplicationContext());
+ mLastRemoteOperation.execute(wc, this, mHandler);
+
+ getActivity().showDialog(PreviewImageActivity.DIALOG_SHORT_WAIT);
+ }
+ }
+
+
+ /**
+ * Removes the file from local storage
+ */
+ @Override
+ public void onNeutral(String callerTag) {
+ // TODO this code should be made in a secondary thread,
+ if (mFile.isDown()) { // checks it is still there
+ File f = new File(mFile.getStoragePath());
+ f.delete();
+ mFile.setStoragePath(null);
+ mStorageManager.saveFile(mFile);
+ finish();
+ }
+ }
+
+ /**
+ * User cancelled the removal action.
+ */
+ @Override
+ public void onCancel(String callerTag) {
+ // nothing to do here
+ }
+
+
+ /**
+ * {@inheritDoc}
+ */
+ public OCFile getFile(){
+ return mFile;
+ }
+
+ /*
+ /**
+ * Use this method to signal this Activity that it shall update its view.
+ *
+ * @param file : An {@link OCFile}
+ *-/
+ public void updateFileDetails(OCFile file, Account ocAccount) {
+ mFile = file;
+ if (ocAccount != null && (
+ mStorageManager == null ||
+ (mAccount != null && !mAccount.equals(ocAccount))
+ )) {
+ mStorageManager = new FileDataStorageManager(ocAccount, getActivity().getApplicationContext().getContentResolver());
+ }
+ mAccount = ocAccount;
+ updateFileDetails(false);
+ }
+ */
+
+
+ private class BitmapLoader extends AsyncTask<String, Void, Bitmap> {
+
+ /**
+ * Weak reference to the target {@link ImageView} where the bitmap will be loaded into.
+ *
+ * Using a weak reference will avoid memory leaks if the target ImageView is retired from memory before the load finishes.
+ */
+ private final WeakReference<ImageView> mImageViewRef;
+
+
+ /**
+ * Constructor.
+ *
+ * @param imageView Target {@link ImageView} where the bitmap will be loaded into.
+ */
+ public BitmapLoader(ImageView imageView) {
+ mImageViewRef = new WeakReference<ImageView>(imageView);
+ }
+
+
+ @SuppressWarnings("deprecation")
+ @SuppressLint({ "NewApi", "NewApi", "NewApi" }) // to avoid Lint errors since Android SDK r20
+ @Override
+ protected Bitmap doInBackground(String... params) {
+ Bitmap result = null;
+ if (params.length != 1) return result;
+ String storagePath = params[0];
+ try {
+ // set desired options that will affect the size of the bitmap
+ BitmapFactory.Options options = new Options();
+ options.inScaled = true;
+ options.inPurgeable = true;
+ if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.GINGERBREAD_MR1) {
+ options.inPreferQualityOverSpeed = false;
+ }
+ if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB) {
+ options.inMutable = false;
+ }
+ // make a false load of the bitmap - just to be able to read outWidth, outHeight and outMimeType
+ options.inJustDecodeBounds = true;
+ BitmapFactory.decodeFile(storagePath, options);
+
+ int width = options.outWidth;
+ int height = options.outHeight;
+ int scale = 1;
+ if (width >= 2048 || height >= 2048) {
+ // try to scale down the image to save memory
+ scale = (int) Math.ceil((Math.ceil(Math.max(height, width) / 2048.)));
+ options.inSampleSize = scale;
+ }
+ Display display = getActivity().getWindowManager().getDefaultDisplay();
+ Point size = new Point();
+ int screenwidth;
+ if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.HONEYCOMB_MR2) {
+ display.getSize(size);
+ screenwidth = size.x;
+ } else {
+ screenwidth = display.getWidth();
+ }
+
+ Log.d(TAG, "image width: " + width + ", screen width: " + screenwidth);
+
+ if (width > screenwidth) {
+ // second try to scale down the image , this time depending upon the screen size; WTF...
+ scale = (int) Math.ceil((float)width / screenwidth);
+ options.inSampleSize = scale;
+ }
+
+ // really load the bitmap
+ options.inJustDecodeBounds = false; // the next decodeFile call will be real
+ result = BitmapFactory.decodeFile(storagePath, options);
+ Log.e(TAG, "loaded width: " + options.outWidth + ", loaded height: " + options.outHeight);
+
+ } catch (OutOfMemoryError e) {
+ result = null;
+ Log.e(TAG, "Out of memory occured for file with size " + storagePath);
+
+ } catch (NoSuchFieldError e) {
+ result = null;
+ Log.e(TAG, "Error from access to unexisting field despite protection " + storagePath);
+
+ } catch (Throwable t) {
+ result = null;
+ Log.e(TAG, "Unexpected error while creating image preview " + storagePath, t);
+ }
+ return result;
+ }
+
+ @Override
+ protected void onPostExecute(Bitmap result) {
+ if (result != null && mImageViewRef != null) {
+ final ImageView imageView = mImageViewRef.get();
+ imageView.setImageBitmap(result);
+ mBitmap = result;
+ }
+ }
+
+ }
+
+ /**
+ * Helper method to test if an {@link OCFile} can be passed to a {@link PreviewImageFragment} to be previewed.
+ *
+ * @param file File to test if can be previewed.
+ * @return 'True' if the file can be handled by the fragment.
+ */
+ public static boolean canBePreviewed(OCFile file) {
+ return (file != null && file.isImage());
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ @Override
+ public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
+ if (operation.equals(mLastRemoteOperation) && operation instanceof RemoveFileOperation) {
+ onRemoveFileOperationFinish((RemoveFileOperation)operation, result);
+ }
+ }
+
+ private void onRemoveFileOperationFinish(RemoveFileOperation operation, RemoteOperationResult result) {
+ getActivity().dismissDialog(PreviewImageActivity.DIALOG_SHORT_WAIT);
+
+ if (result.isSuccess()) {
+ Toast msg = Toast.makeText(getActivity().getApplicationContext(), R.string.remove_success_msg, Toast.LENGTH_LONG);
+ msg.show();
+ finish();
+
+ } else {
+ Toast msg = Toast.makeText(getActivity(), R.string.remove_fail_msg, Toast.LENGTH_LONG);
+ msg.show();
+ if (result.isSslRecoverableException()) {
+ // TODO show the SSL warning dialog
+ }
+ }
+ }
+
+ /**
+ * Finishes the preview
+ */
+ private void finish() {
+ Activity container = getActivity();
+ container.finish();
+ }
+
+
+}
projects / pub / Android / ownCloud.git / commitdiff