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package de.pixart.messenger.ui.adapter;
import android.content.Context;
import android.content.res.Resources;
import android.databinding.DataBindingUtil;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.support.annotation.AttrRes;
import android.support.annotation.DimenRes;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.ViewGroup;
import android.widget.ImageView;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.RejectedExecutionException;
import de.pixart.messenger.R;
import de.pixart.messenger.databinding.MediaBinding;
import de.pixart.messenger.ui.XmppActivity;
import de.pixart.messenger.ui.util.Attachment;
import de.pixart.messenger.ui.util.StyledAttributes;
import de.pixart.messenger.ui.util.ViewUtil;
public class MediaAdapter extends RecyclerView.Adapter<MediaAdapter.MediaViewHolder> {
private static final List<String> DOCUMENT_MIMES = Arrays.asList(
"application/pdf",
"application/vnd.oasis.opendocument.text",
"application/msword",
"application/vnd.openxmlformats-officedocument.wordprocessingml.document",
"text/x-tex",
"text/plain"
);
private final ArrayList<Attachment> attachments = new ArrayList<>();
private final XmppActivity activity;
private int mediaSize = 0;
public MediaAdapter(XmppActivity activity, @DimenRes int mediaSize) {
this.activity = activity;
this.mediaSize = Math.round(activity.getResources().getDimension(mediaSize));
}
public static void setMediaSize(RecyclerView recyclerView, int mediaSize) {
RecyclerView.Adapter adapter = recyclerView.getAdapter();
if (adapter instanceof MediaAdapter) {
((MediaAdapter) adapter).setMediaSize(mediaSize);
}
}
private static @AttrRes
int getImageAttr(Attachment attachment) {
final @AttrRes int attr;
if (attachment.getType() == Attachment.Type.LOCATION) {
attr = R.attr.media_preview_location;
} else if (attachment.getType() == Attachment.Type.RECORDING) {
attr = R.attr.media_preview_recording;
} else {
final String mime = attachment.getMime();
if (mime == null) {
attr = R.attr.media_preview_unknown;
} else if (mime.startsWith("audio/")) {
attr = R.attr.media_preview_audio;
} else if (mime.equals("text/calendar") || (mime.equals("text/x-vcalendar"))) {
attr = R.attr.media_preview_calendar;
} else if (mime.equals("text/x-vcard")) {
attr = R.attr.media_preview_contact;
} else if (mime.equals("application/vnd.android.package-archive")) {
attr = R.attr.media_preview_app;
} else if (mime.equals("application/zip") || mime.equals("application/rar")) {
attr = R.attr.media_preview_archive;
} else if (DOCUMENT_MIMES.contains(mime)) {
attr = R.attr.media_preview_document;
} else {
attr = R.attr.media_preview_unknown;
}
}
return attr;
}
public static void renderPreview(Context context, Attachment attachment, ImageView imageView) {
imageView.setBackgroundColor(StyledAttributes.getColor(context, R.attr.color_background_tertiary));
imageView.setImageAlpha(Math.round(StyledAttributes.getFloat(context, R.attr.icon_alpha) * 255));
imageView.setImageDrawable(StyledAttributes.getDrawable(context, getImageAttr(attachment)));
}
private static boolean cancelPotentialWork(Attachment attachment, ImageView imageView) {
final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
if (bitmapWorkerTask != null) {
final Attachment oldAttachment = bitmapWorkerTask.attachment;
if (oldAttachment == null || !oldAttachment.equals(attachment)) {
bitmapWorkerTask.cancel(true);
} else {
return false;
}
}
return true;
}
private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
if (imageView != null) {
final Drawable drawable = imageView.getDrawable();
if (drawable instanceof AsyncDrawable) {
final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
return asyncDrawable.getBitmapWorkerTask();
}
}
return null;
}
@NonNull
@Override
public MediaViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
MediaBinding binding = DataBindingUtil.inflate(layoutInflater, R.layout.media, parent, false);
return new MediaViewHolder(binding);
}
@Override
public void onBindViewHolder(@NonNull MediaViewHolder holder, int position) {
final Attachment attachment = attachments.get(position);
if (attachment.renderThumbnail()) {
holder.binding.media.setImageAlpha(255);
loadPreview(attachment, holder.binding.media);
} else {
cancelPotentialWork(attachment, holder.binding.media);
renderPreview(activity, attachment, holder.binding.media);
}
holder.binding.media.setOnClickListener(v -> ViewUtil.view(activity, attachment));
}
public void setAttachments(List<Attachment> attachments) {
this.attachments.clear();
this.attachments.addAll(attachments);
notifyDataSetChanged();
}
private void setMediaSize(int mediaSize) {
this.mediaSize = mediaSize;
}
private void loadPreview(Attachment attachment, ImageView imageView) {
if (cancelPotentialWork(attachment, imageView)) {
final Bitmap bm = activity.xmppConnectionService.getFileBackend().getPreviewForUri(attachment, mediaSize, true);
if (bm != null) {
cancelPotentialWork(attachment, imageView);
imageView.setImageBitmap(bm);
imageView.setBackgroundColor(0x00000000);
} else {
imageView.setBackgroundColor(0xff333333);
imageView.setImageDrawable(null);
final BitmapWorkerTask task = new BitmapWorkerTask(imageView);
final AsyncDrawable asyncDrawable = new AsyncDrawable(activity.getResources(), null, task);
imageView.setImageDrawable(asyncDrawable);
try {
task.execute(attachment);
} catch (final RejectedExecutionException ignored) {
}
}
}
}
@Override
public int getItemCount() {
return attachments.size();
}
static class AsyncDrawable extends BitmapDrawable {
private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
super(res, bitmap);
bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
}
BitmapWorkerTask getBitmapWorkerTask() {
return bitmapWorkerTaskReference.get();
}
}
class MediaViewHolder extends RecyclerView.ViewHolder {
private final MediaBinding binding;
MediaViewHolder(MediaBinding binding) {
super(binding.getRoot());
this.binding = binding;
}
}
class BitmapWorkerTask extends AsyncTask<Attachment, Void, Bitmap> {
private final WeakReference<ImageView> imageViewReference;
private Attachment attachment = null;
BitmapWorkerTask(ImageView imageView) {
imageViewReference = new WeakReference<>(imageView);
}
@Override
protected Bitmap doInBackground(Attachment... params) {
this.attachment = params[0];
return activity.xmppConnectionService.getFileBackend().getPreviewForUri(this.attachment, mediaSize, false);
}
@Override
protected void onPostExecute(Bitmap bitmap) {
if (bitmap != null && !isCancelled()) {
final ImageView imageView = imageViewReference.get();
if (imageView != null) {
imageView.setImageBitmap(bitmap);
imageView.setBackgroundColor(0x00000000);
}
}
}
}
}
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