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@@ -0,0 +1,594 @@
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+/* ownCloud Android client application
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+ * Copyright (C) 2012-2013 ownCloud Inc.
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+ *
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+ * This program is free software: you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation, either version 2 of the License, or
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+ * (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU General Public License
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+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
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+ *
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+ */
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+package com.owncloud.android.ui.fragment;
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+
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+import java.io.File;
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+import java.lang.ref.WeakReference;
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+import java.util.ArrayList;
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+import java.util.List;
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+
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+
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+import android.accounts.Account;
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+import android.annotation.SuppressLint;
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+import android.app.Activity;
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+import android.content.ActivityNotFoundException;
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+import android.content.Intent;
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+import android.graphics.Bitmap;
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+import android.graphics.BitmapFactory;
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+import android.graphics.BitmapFactory.Options;
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+import android.graphics.Point;
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+import android.net.Uri;
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+import android.os.AsyncTask;
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+import android.os.Bundle;
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+import android.os.Handler;
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+import android.util.Log;
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+import android.view.Display;
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+import android.view.LayoutInflater;
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+import android.view.View;
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+import android.view.ViewGroup;
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+import android.webkit.MimeTypeMap;
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+import android.widget.ImageView;
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+import android.widget.Toast;
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+
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+import com.actionbarsherlock.app.SherlockFragment;
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+import com.actionbarsherlock.view.Menu;
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+import com.actionbarsherlock.view.MenuInflater;
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+import com.actionbarsherlock.view.MenuItem;
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+import com.owncloud.android.datamodel.FileDataStorageManager;
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+import com.owncloud.android.datamodel.OCFile;
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+import com.owncloud.android.network.OwnCloudClientUtils;
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+import com.owncloud.android.operations.OnRemoteOperationListener;
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+import com.owncloud.android.operations.RemoteOperation;
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+import com.owncloud.android.operations.RemoteOperationResult;
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+import com.owncloud.android.operations.RemoveFileOperation;
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+import com.owncloud.android.ui.activity.PreviewImageActivity;
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+
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+import com.owncloud.android.R;
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+import eu.alefzero.webdav.WebdavClient;
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+import eu.alefzero.webdav.WebdavUtils;
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+
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+
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+/**
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+ * This fragment shows a preview of a downloaded image.
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+ *
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+ * Trying to get an instance with NULL {@link OCFile} or ownCloud {@link Account} values will produce an {@link IllegalStateException}.
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+ *
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+ * If the {@link OCFile} passed is not downloaded, an {@link IllegalStateException} is generated on instantiation too.
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+ *
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+ * @author David A. Velasco
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+ */
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+public class PreviewImageFragment extends SherlockFragment implements FileFragment,
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+ OnRemoteOperationListener,
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+ ConfirmationDialogFragment.ConfirmationDialogFragmentListener{
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+ public static final String EXTRA_FILE = "FILE";
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+ public static final String EXTRA_ACCOUNT = "ACCOUNT";
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+
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+ private View mView;
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+ private OCFile mFile;
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+ private Account mAccount;
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+ private FileDataStorageManager mStorageManager;
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+ private ImageView mImageView;
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+ public Bitmap mBitmap = null;
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+
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+ private Handler mHandler;
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+ private RemoteOperation mLastRemoteOperation;
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+
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+ private static final String TAG = PreviewImageFragment.class.getSimpleName();
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+
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+
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+ /**
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+ * Creates a fragment to preview an image.
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+ *
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+ * When 'imageFile' or 'ocAccount' are null
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+ *
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+ * @param imageFile An {@link OCFile} to preview as an image in the fragment
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+ * @param ocAccount An ownCloud account; needed to start downloads
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+ */
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+ public PreviewImageFragment(OCFile fileToDetail, Account ocAccount) {
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+ mFile = fileToDetail;
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+ mAccount = ocAccount;
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+ mStorageManager = null; // we need a context to init this; the container activity is not available yet at this moment
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+ }
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+
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+
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+ /**
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+ * Creates an empty fragment for image previews.
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+ *
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+ * MUST BE KEPT: the system uses it when tries to reinstantiate a fragment automatically (for instance, when the device is turned a aside).
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+ *
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+ * DO NOT CALL IT: an {@link OCFile} and {@link Account} must be provided for a successful construction
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+ */
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+ public PreviewImageFragment() {
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+ mFile = null;
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+ mAccount = null;
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+ mStorageManager = null;
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+ }
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+
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+
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+ /**
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+ * {@inheritDoc}
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+ */
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+ @Override
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+ public void onCreate(Bundle savedInstanceState) {
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+ super.onCreate(savedInstanceState);
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+ mHandler = new Handler();
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+ setHasOptionsMenu(true);
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+ }
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+
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+
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+ /**
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+ * {@inheritDoc}
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+ */
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+ @Override
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+ public View onCreateView(LayoutInflater inflater, ViewGroup container,
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+ Bundle savedInstanceState) {
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+ super.onCreateView(inflater, container, savedInstanceState);
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+ mView = inflater.inflate(R.layout.preview_image_fragment, container, false);
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+ mImageView = (ImageView)mView.findViewById(R.id.image);
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+ return mView;
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+ }
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+
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+
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+ /**
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+ * {@inheritDoc}
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+ */
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+ @Override
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+ public void onAttach(Activity activity) {
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+ super.onAttach(activity);
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+ if (!(activity instanceof FileFragment.ContainerActivity))
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+ throw new ClassCastException(activity.toString() + " must implement " + FileFragment.ContainerActivity.class.getSimpleName());
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+ }
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+
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+
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+ /**
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+ * {@inheritDoc}
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+ */
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+ @Override
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+ public void onActivityCreated(Bundle savedInstanceState) {
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+ super.onActivityCreated(savedInstanceState);
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+ mStorageManager = new FileDataStorageManager(mAccount, getActivity().getApplicationContext().getContentResolver());
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+ if (savedInstanceState != null) {
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+ mFile = savedInstanceState.getParcelable(PreviewImageFragment.EXTRA_FILE);
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+ mAccount = savedInstanceState.getParcelable(PreviewImageFragment.EXTRA_ACCOUNT);
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+
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+ }
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+ if (mFile == null) {
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+ throw new IllegalStateException("Instanced with a NULL OCFile");
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+ }
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+ if (mAccount == null) {
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+ throw new IllegalStateException("Instanced with a NULL ownCloud Account");
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+ }
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+ if (!mFile.isDown()) {
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+ throw new IllegalStateException("There is no local file to preview");
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+ }
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+ }
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+
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+
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+ /**
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+ * {@inheritDoc}
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+ */
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+ @Override
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+ public void onSaveInstanceState(Bundle outState) {
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+ super.onSaveInstanceState(outState);
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+ outState.putParcelable(PreviewImageFragment.EXTRA_FILE, mFile);
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+ outState.putParcelable(PreviewImageFragment.EXTRA_ACCOUNT, mAccount);
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+ }
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+
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+
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+ @Override
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+ public void onStart() {
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+ super.onStart();
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+ if (mFile != null) {
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+ BitmapLoader bl = new BitmapLoader(mImageView);
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+ bl.execute(new String[]{mFile.getStoragePath()});
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+ }
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+ }
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+
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+
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+ /**
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+ * {@inheritDoc}
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+ */
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+ @Override
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+ public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
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+ super.onCreateOptionsMenu(menu, inflater);
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+
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+ inflater.inflate(R.menu.file_actions_menu, menu);
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+ List<Integer> toHide = new ArrayList<Integer>();
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+
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+ MenuItem item = null;
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+ toHide.add(R.id.action_cancel_download);
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+ toHide.add(R.id.action_cancel_upload);
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+ toHide.add(R.id.action_download_file);
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+ toHide.add(R.id.action_rename_file); // by now
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+
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+ for (int i : toHide) {
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+ item = menu.findItem(i);
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+ if (item != null) {
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+ item.setVisible(false);
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+ item.setEnabled(false);
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+ }
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+ }
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+
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+ }
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+
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+
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+ /**
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+ * {@inheritDoc}
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+ */
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+ @Override
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+ public boolean onOptionsItemSelected(MenuItem item) {
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+ switch (item.getItemId()) {
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+ case R.id.action_open_file_with: {
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+ openFile();
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+ return true;
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+ }
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+ case R.id.action_remove_file: {
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+ removeFile();
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+ return true;
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+ }
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+ case R.id.action_see_details: {
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+ seeDetails();
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+ return true;
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+ }
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+
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+ default:
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+ return false;
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+ }
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+ }
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+
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+
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+ private void seeDetails() {
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+ ((FileFragment.ContainerActivity)getActivity()).showFragmentWithDetails(mFile);
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+ }
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+
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+
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+ @Override
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+ public void onResume() {
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+ super.onResume();
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+ /*
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+ mDownloadFinishReceiver = new DownloadFinishReceiver();
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+ IntentFilter filter = new IntentFilter(
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+ FileDownloader.DOWNLOAD_FINISH_MESSAGE);
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+ getActivity().registerReceiver(mDownloadFinishReceiver, filter);
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+
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+ mUploadFinishReceiver = new UploadFinishReceiver();
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+ filter = new IntentFilter(FileUploader.UPLOAD_FINISH_MESSAGE);
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+ getActivity().registerReceiver(mUploadFinishReceiver, filter);
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+ */
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+
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+ }
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+
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+
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+ @Override
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+ public void onPause() {
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+ super.onPause();
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+ /*
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+ if (mVideoPreview.getVisibility() == View.VISIBLE) {
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+ mSavedPlaybackPosition = mVideoPreview.getCurrentPosition();
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+ }*/
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+ /*
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+ getActivity().unregisterReceiver(mDownloadFinishReceiver);
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+ mDownloadFinishReceiver = null;
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+
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+ getActivity().unregisterReceiver(mUploadFinishReceiver);
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+ mUploadFinishReceiver = null;
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+ */
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+ }
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+
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+
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+ @Override
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+ public void onStop() {
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+ super.onStop();
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+ }
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+
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+ @Override
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+ public void onDestroy() {
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+ super.onDestroy();
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+ if (mBitmap != null) {
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+ mBitmap.recycle();
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+ }
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+ }
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+
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+
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+ /**
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+ * Opens the previewed image with an external application.
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+ *
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+ * TODO - improve this; instead of prioritize the actions available for the MIME type in the server,
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+ * we should get a list of available apps for MIME tpye in the server and join it with the list of
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+ * available apps for the MIME type known from the file extension, to let the user choose
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+ */
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+ private void openFile() {
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+ String storagePath = mFile.getStoragePath();
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+ String encodedStoragePath = WebdavUtils.encodePath(storagePath);
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+ try {
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+ Intent i = new Intent(Intent.ACTION_VIEW);
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+ i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mFile.getMimetype());
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+ i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
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+ startActivity(i);
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+
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+ } catch (Throwable t) {
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+ Log.e(TAG, "Fail when trying to open with the mimeType provided from the ownCloud server: " + mFile.getMimetype());
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+ boolean toastIt = true;
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+ String mimeType = "";
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+ try {
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+ Intent i = new Intent(Intent.ACTION_VIEW);
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+ mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(storagePath.substring(storagePath.lastIndexOf('.') + 1));
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+ if (mimeType == null || !mimeType.equals(mFile.getMimetype())) {
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+ if (mimeType != null) {
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+ i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mimeType);
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+ } else {
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+ // desperate try
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+ i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), "*-/*");
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+ }
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+ i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
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+ startActivity(i);
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+ toastIt = false;
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+ }
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+
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+ } catch (IndexOutOfBoundsException e) {
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+ Log.e(TAG, "Trying to find out MIME type of a file without extension: " + storagePath);
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+
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+ } catch (ActivityNotFoundException e) {
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+ Log.e(TAG, "No activity found to handle: " + storagePath + " with MIME type " + mimeType + " obtained from extension");
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+
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+ } catch (Throwable th) {
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+ Log.e(TAG, "Unexpected problem when opening: " + storagePath, th);
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+
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+ } finally {
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+ if (toastIt) {
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+ Toast.makeText(getActivity(), "There is no application to handle file " + mFile.getFileName(), Toast.LENGTH_SHORT).show();
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+ }
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+ }
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+
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+ }
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+ finish();
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+ }
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+
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+
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+ /**
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+ * Starts a the removal of the previewed file.
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+ *
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+ * Shows a confirmation dialog. The action continues in {@link #onConfirmation(String)} , {@link #onNeutral(String)} or {@link #onCancel(String)},
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+ * depending upon the user selection in the dialog.
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+ */
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+ private void removeFile() {
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+ ConfirmationDialogFragment confDialog = ConfirmationDialogFragment.newInstance(
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+ R.string.confirmation_remove_alert,
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+ new String[]{mFile.getFileName()},
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+ R.string.confirmation_remove_remote_and_local,
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+ R.string.confirmation_remove_local,
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+ R.string.common_cancel);
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+ confDialog.setOnConfirmationListener(this);
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+ confDialog.show(getFragmentManager(), ConfirmationDialogFragment.FTAG_CONFIRMATION);
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+ }
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+
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+
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+ /**
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+ * Performs the removal of the previewed file, both locally and in the server.
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+ */
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+ @Override
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+ public void onConfirmation(String callerTag) {
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+ if (mStorageManager.getFileById(mFile.getFileId()) != null) { // check that the file is still there;
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+ mLastRemoteOperation = new RemoveFileOperation( mFile, // TODO we need to review the interface with RemoteOperations, and use OCFile IDs instead of OCFile objects as parameters
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+ true,
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+ mStorageManager);
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+ WebdavClient wc = OwnCloudClientUtils.createOwnCloudClient(mAccount, getSherlockActivity().getApplicationContext());
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+ mLastRemoteOperation.execute(wc, this, mHandler);
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+
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+ getActivity().showDialog(PreviewImageActivity.DIALOG_SHORT_WAIT);
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+ }
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+ }
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+
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+
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+ /**
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+ * Removes the file from local storage
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+ */
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+ @Override
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+ public void onNeutral(String callerTag) {
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+ // TODO this code should be made in a secondary thread,
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+ if (mFile.isDown()) { // checks it is still there
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+ File f = new File(mFile.getStoragePath());
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+ f.delete();
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+ mFile.setStoragePath(null);
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+ mStorageManager.saveFile(mFile);
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+ finish();
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+ }
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+ }
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+
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+ /**
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+ * User cancelled the removal action.
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+ */
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+ @Override
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+ public void onCancel(String callerTag) {
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+ // nothing to do here
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+ }
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+
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+
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+ /**
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+ * {@inheritDoc}
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+ */
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+ public OCFile getFile(){
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|
+ 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();
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+}
|
David A. Velasco