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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.camera.data;
import android.content.Context;
import android.view.View;
import com.android.camera.Storage;
import com.android.camera.debug.Log;
import com.android.camera.util.Size;
import com.bumptech.glide.Glide;
import com.bumptech.glide.load.Key;
import com.bumptech.glide.signature.MediaStoreSignature;
import com.google.common.base.Optional;
import java.io.File;
import java.text.DateFormat;
import javax.annotation.Nonnull;
/**
* A base class for all the local media files. The bitmap is loaded in
* background thread. Subclasses should implement their own background loading
* thread by sub-classing BitmapLoadTask and overriding doInBackground() to
* return a bitmap.
*/
public abstract class FilmstripItemBase<T extends FilmstripItemData> implements FilmstripItem {
/** The minimum id to use to query for all media at a given media store uri */
public static final int QUERY_ALL_MEDIA_ID = -1;
protected final Context mContext;
protected final GlideFilmstripManager mGlideManager;
protected final T mData;
protected final Metadata mMetaData;
protected final FilmstripItemAttributes mAttributes;
protected final DateFormat mDateFormatter = DateFormat.getDateTimeInstance();
protected Size mSuggestedSize;
public FilmstripItemBase(Context context, GlideFilmstripManager glideManager, T data,
FilmstripItemAttributes attributes) {
mContext = context;
mGlideManager = glideManager;
mData = data;
mAttributes = attributes;
mMetaData = new Metadata();
mSuggestedSize = GlideFilmstripManager.TINY_THUMB_SIZE;
}
@Override
public FilmstripItemData getData() {
return mData;
}
@Override
public boolean delete() {
File fileToDelete = new File(mData.getFilePath());
boolean deletionSucceeded = fileToDelete.delete();
deleteIfEmptyCameraSubDir(fileToDelete.getParentFile());
return deletionSucceeded;
}
@Override
public void setSuggestedSize(int widthPx, int heightPx) {
if (widthPx > 0 && heightPx > 0) {
mSuggestedSize = new Size(widthPx, heightPx);
} else {
Log.w(TAG, "Suggested size was set to a zero area value!");
}
}
@Override
public void recycle(@Nonnull View view) {
Glide.clear(view);
}
@Override
public Optional<MediaDetails> getMediaDetails() {
MediaDetails mediaDetails = new MediaDetails();
mediaDetails.addDetail(MediaDetails.INDEX_TITLE, mData.getTitle());
mediaDetails.addDetail(MediaDetails.INDEX_WIDTH, getDimensions().getWidth());
mediaDetails.addDetail(MediaDetails.INDEX_HEIGHT, getDimensions().getHeight());
mediaDetails.addDetail(MediaDetails.INDEX_PATH, mData.getFilePath());
mediaDetails.addDetail(MediaDetails.INDEX_DATETIME,
mDateFormatter.format(mData.getLastModifiedDate()));
long mSizeInBytes = mData.getSizeInBytes();
if (mSizeInBytes > 0) {
mediaDetails.addDetail(MediaDetails.INDEX_SIZE, mSizeInBytes);
}
Location location = mData.getLocation();
if (location != Location.UNKNOWN) {
mediaDetails.addDetail(MediaDetails.INDEX_LOCATION, location.getLocationString());
}
return Optional.of(mediaDetails);
}
@Override
public FilmstripItemAttributes getAttributes() {
return mAttributes;
}
@Override
public Metadata getMetadata() {
return mMetaData;
}
@Override
public Size getDimensions() {
return mData.getDimensions();
}
@Override
public int getOrientation() {
return mData.getOrientation();
}
protected final Key generateSignature(FilmstripItemData data) {
// Per Glide docs, make default mime type be the empty String
String mimeType = (data.getMimeType() == null) ? "" : data.getMimeType();
long modTimeSeconds = (data.getLastModifiedDate() == null) ? 0 :
data.getLastModifiedDate().getTime() / 1000;
return new MediaStoreSignature(mimeType, modTimeSeconds, data.getOrientation());
}
private void deleteIfEmptyCameraSubDir(File directory) {
// Make sure 'directory' refers to a valid existing empty directory.
if (!directory.exists() || !directory.isDirectory() || directory.list().length != 0) {
return;
}
// Check if this is a 'Camera' sub-directory.
String cameraPathStr = new File(Storage.generateDirectory()).getAbsolutePath();
String fileParentPathStr = directory.getParentFile().getAbsolutePath();
Log.d(TAG, "CameraPathStr: " + cameraPathStr + " fileParentPathStr: " + fileParentPathStr);
// Delete the directory if it's an empty sub-directory of the Camera
// directory.
if (fileParentPathStr.equals(cameraPathStr)) {
if(!directory.delete()) {
Log.d(TAG, "Failed to delete: " + directory);
}
}
}
}
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