session-android/src/org/thoughtcrime/securesms/mms/AttachmentStreamUriLoader.java

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package org.thoughtcrime.securesms.mms;
import android.content.Context;
import android.net.Uri;
import android.support.annotation.NonNull;
import com.bumptech.glide.load.data.DataFetcher;
import com.bumptech.glide.load.model.GenericLoaderFactory;
import com.bumptech.glide.load.model.ModelLoader;
import com.bumptech.glide.load.model.ModelLoaderFactory;
import com.bumptech.glide.load.model.stream.StreamModelLoader;
import org.thoughtcrime.securesms.crypto.MasterSecret;
import org.thoughtcrime.securesms.mms.AttachmentStreamUriLoader.AttachmentModel;
import org.thoughtcrime.securesms.mms.DecryptableStreamUriLoader.DecryptableUri;
import org.thoughtcrime.securesms.util.SaveAttachmentTask.Attachment;
import java.io.File;
import java.io.InputStream;
/**
* A {@link ModelLoader} for translating uri models into {@link InputStream} data. Capable of handling 'http',
* 'https', 'android.resource', 'content', and 'file' schemes. Unsupported schemes will throw an exception in
* {@link #getResourceFetcher(Uri, int, int)}.
*/
public class AttachmentStreamUriLoader implements StreamModelLoader<AttachmentModel> {
private final Context context;
/**
* THe default factory for {@link com.bumptech.glide.load.model.stream.StreamUriLoader}s.
*/
public static class Factory implements ModelLoaderFactory<AttachmentModel, InputStream> {
@Override
public StreamModelLoader<AttachmentModel> build(Context context, GenericLoaderFactory factories) {
return new AttachmentStreamUriLoader(context);
}
@Override
public void teardown() {
// Do nothing.
}
}
public AttachmentStreamUriLoader(Context context) {
this.context = context;
}
@Override
public DataFetcher<InputStream> getResourceFetcher(AttachmentModel model, int width, int height) {
return new AttachmentStreamLocalUriFetcher(model.attachment, model.key);
}
public static class AttachmentModel {
public @NonNull File attachment;
public @NonNull byte[] key;
public AttachmentModel(@NonNull File attachment, @NonNull byte[] key) {
this.attachment = attachment;
this.key = key;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
AttachmentModel that = (AttachmentModel)o;
return attachment.equals(that.attachment);
}
@Override
public int hashCode() {
return attachment.hashCode();
}
}
}