1package eu.siacs.conversations.ui.adapter;
2
3import android.content.res.ColorStateList;
4import android.content.res.Resources;
5import android.graphics.Bitmap;
6import android.graphics.Color;
7import android.graphics.drawable.BitmapDrawable;
8import android.graphics.drawable.Drawable;
9import android.os.AsyncTask;
10import android.view.LayoutInflater;
11import android.view.ViewGroup;
12import android.widget.ImageView;
13
14import androidx.annotation.DimenRes;
15import androidx.annotation.DrawableRes;
16import androidx.annotation.NonNull;
17import androidx.core.widget.ImageViewCompat;
18import androidx.databinding.DataBindingUtil;
19import androidx.recyclerview.widget.RecyclerView;
20
21import com.google.android.material.color.MaterialColors;
22import com.google.common.base.Strings;
23
24import eu.siacs.conversations.R;
25import eu.siacs.conversations.databinding.ItemMediaBinding;
26import eu.siacs.conversations.ui.XmppActivity;
27import eu.siacs.conversations.ui.util.Attachment;
28import eu.siacs.conversations.ui.util.ViewUtil;
29import eu.siacs.conversations.worker.ExportBackupWorker;
30
31import java.io.File;
32import java.lang.ref.WeakReference;
33import java.util.ArrayList;
34import java.util.Arrays;
35import java.util.List;
36import java.util.concurrent.RejectedExecutionException;
37
38public class MediaAdapter extends RecyclerView.Adapter<MediaAdapter.MediaViewHolder> {
39
40 public static final List<String> DOCUMENT_MIMES =
41 Arrays.asList(
42 "application/pdf",
43 "application/vnd.oasis.opendocument.text",
44 "application/msword",
45 "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
46 "text/x-tex",
47 "text/plain");
48
49 private static final List<String> ARCHIVE_MIMES =
50 Arrays.asList(
51 "application/x-7z-compressed",
52 "application/zip",
53 "application/rar",
54 "application/x-gtar",
55 "application/x-tar");
56 public static final List<String> CODE_MIMES = Arrays.asList("text/html", "text/xml");
57
58 private final ArrayList<Attachment> attachments = new ArrayList<>();
59
60 private final XmppActivity activity;
61
62 private int mediaSize = 0;
63
64 public MediaAdapter(XmppActivity activity, @DimenRes int mediaSize) {
65 this.activity = activity;
66 this.mediaSize = Math.round(activity.getResources().getDimension(mediaSize));
67 }
68
69 @SuppressWarnings("rawtypes")
70 public static void setMediaSize(final RecyclerView recyclerView, int mediaSize) {
71 final RecyclerView.Adapter adapter = recyclerView.getAdapter();
72 if (adapter instanceof MediaAdapter mediaAdapter) {
73 mediaAdapter.setMediaSize(mediaSize);
74 }
75 }
76
77 public static @DrawableRes int getImageDrawable(final Attachment attachment) {
78 if (attachment.getType() == Attachment.Type.LOCATION) {
79 return R.drawable.ic_location_pin_48dp;
80 } else if (attachment.getType() == Attachment.Type.RECORDING) {
81 return R.drawable.ic_mic_48dp;
82 } else {
83 return getImageDrawable(attachment.getMime());
84 }
85 }
86
87 private static @DrawableRes int getImageDrawable(final String mime) {
88
89 // TODO ideas for more mime types: XML, HTML documents, GPG/PGP files, eml files,
90 // spreadsheets (table symbol)
91
92 // add bz2 and tar.gz to archive detection
93
94 if (Strings.isNullOrEmpty(mime)) {
95 return R.drawable.ic_help_center_48dp;
96 } else if (mime.equals("audio/x-m4b")) {
97 return R.drawable.ic_play_lesson_48dp;
98 } else if (mime.startsWith("audio/")) {
99 return R.drawable.ic_headphones_48dp;
100 } else if (mime.equals("text/calendar") || (mime.equals("text/x-vcalendar"))) {
101 return R.drawable.ic_event_48dp;
102 } else if (mime.equals("text/x-vcard")) {
103 return R.drawable.ic_person_48dp;
104 } else if (mime.equals("application/vnd.android.package-archive")) {
105 return R.drawable.ic_adb_48dp;
106 } else if (ARCHIVE_MIMES.contains(mime)) {
107 return R.drawable.ic_archive_48dp;
108 } else if (mime.equals("application/epub+zip")
109 || mime.equals("application/vnd.amazon.mobi8-ebook")) {
110 return R.drawable.ic_book_48dp;
111 } else if (mime.equals(ExportBackupWorker.MIME_TYPE)) {
112 return R.drawable.ic_backup_48dp;
113 } else if (DOCUMENT_MIMES.contains(mime)) {
114 return R.drawable.ic_description_48dp;
115 } else if (mime.equals("application/gpx+xml")) {
116 return R.drawable.ic_tour_48dp;
117 } else if (mime.startsWith("image/")) {
118 return R.drawable.ic_image_48dp;
119 } else if (mime.startsWith("video/")) {
120 return R.drawable.ic_movie_48dp;
121 } else if (CODE_MIMES.contains(mime)) {
122 return R.drawable.ic_code_48dp;
123 } else if (mime.equals("message/rfc822")) {
124 return R.drawable.ic_email_48dp;
125 } else {
126 return R.drawable.toys_and_games_24dp;
127 }
128 }
129
130 static void renderPreview(final Attachment attachment, final ImageView imageView) {
131 ImageViewCompat.setImageTintList(
132 imageView,
133 ColorStateList.valueOf(
134 MaterialColors.getColor(
135 imageView, com.google.android.material.R.attr.colorOnSurface)));
136 imageView.setImageResource(getImageDrawable(attachment));
137 imageView.setBackgroundColor(
138 MaterialColors.getColor(
139 imageView,
140 com.google.android.material.R.attr.colorSurfaceContainerHighest));
141 }
142
143 private static boolean cancelPotentialWork(Attachment attachment, ImageView imageView) {
144 final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
145
146 if (bitmapWorkerTask != null) {
147 final Attachment oldAttachment = bitmapWorkerTask.attachment;
148 if (oldAttachment == null || !oldAttachment.equals(attachment)) {
149 bitmapWorkerTask.cancel(true);
150 } else {
151 return false;
152 }
153 }
154 return true;
155 }
156
157 private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
158 if (imageView != null) {
159 final Drawable drawable = imageView.getDrawable();
160 if (drawable instanceof AsyncDrawable asyncDrawable) {
161 return asyncDrawable.getBitmapWorkerTask();
162 }
163 }
164 return null;
165 }
166
167 @NonNull
168 @Override
169 public MediaViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
170 final LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
171 ItemMediaBinding binding =
172 DataBindingUtil.inflate(layoutInflater, R.layout.item_media, parent, false);
173 return new MediaViewHolder(binding);
174 }
175
176 @Override
177 public void onBindViewHolder(@NonNull MediaViewHolder holder, int position) {
178 final Attachment attachment = attachments.get(position);
179 if (attachment.renderThumbnail()) {
180 loadPreview(attachment, holder.binding.media);
181 } else {
182 cancelPotentialWork(attachment, holder.binding.media);
183 renderPreview(attachment, holder.binding.media);
184 }
185 holder.binding.getRoot().setOnClickListener(v -> ViewUtil.view(activity, attachment));
186 holder.binding.getRoot().setOnCreateContextMenuListener((menu, v, menuInfo) -> {
187 final var path = activity.xmppConnectionService.getFileBackend().getOriginalPath(attachment.getUri());
188 if (path == null) return;
189 final var file = new File(path);
190 if (!file.canWrite()) return;
191
192 menu.add("Delete File").setOnMenuItemClickListener((x) -> {
193 if (file.delete()) {
194 activity.xmppConnectionService.evictPreview(file);
195 attachments.remove(attachment);
196 notifyDataSetChanged();
197 }
198 return true;
199 });
200 });
201 }
202
203 public void setAttachments(final List<Attachment> attachments) {
204 this.attachments.clear();
205 this.attachments.addAll(attachments);
206 notifyDataSetChanged();
207 }
208
209 private void setMediaSize(int mediaSize) {
210 this.mediaSize = mediaSize;
211 }
212
213 private void loadPreview(Attachment attachment, ImageView imageView) {
214 if (cancelPotentialWork(attachment, imageView)) {
215 final Bitmap bm =
216 activity.xmppConnectionService
217 .getFileBackend()
218 .getPreviewForUri(attachment, mediaSize, true);
219 if (bm != null) {
220 cancelPotentialWork(attachment, imageView);
221 imageView.setImageBitmap(bm);
222 imageView.setBackgroundColor(Color.TRANSPARENT);
223 } else {
224 // TODO consider if this is still a good, general purpose loading color
225 imageView.setBackgroundColor(0xff333333);
226 imageView.setImageDrawable(null);
227 final BitmapWorkerTask task = new BitmapWorkerTask(mediaSize, imageView);
228 final AsyncDrawable asyncDrawable =
229 new AsyncDrawable(activity.getResources(), null, task);
230 imageView.setImageDrawable(asyncDrawable);
231 try {
232 task.execute(attachment);
233 } catch (final RejectedExecutionException ignored) {
234 }
235 }
236 }
237 }
238
239 @Override
240 public int getItemCount() {
241 return attachments.size();
242 }
243
244 static class AsyncDrawable extends BitmapDrawable {
245 private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
246
247 AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
248 super(res, bitmap);
249 bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
250 }
251
252 BitmapWorkerTask getBitmapWorkerTask() {
253 return bitmapWorkerTaskReference.get();
254 }
255 }
256
257 static class MediaViewHolder extends RecyclerView.ViewHolder {
258
259 private final ItemMediaBinding binding;
260
261 MediaViewHolder(ItemMediaBinding binding) {
262 super(binding.getRoot());
263 this.binding = binding;
264 }
265 }
266
267 private static class BitmapWorkerTask extends AsyncTask<Attachment, Void, Bitmap> {
268 private final WeakReference<ImageView> imageViewReference;
269 private Attachment attachment = null;
270 private final int mediaSize;
271
272 BitmapWorkerTask(int mediaSize, ImageView imageView) {
273 this.mediaSize = mediaSize;
274 imageViewReference = new WeakReference<>(imageView);
275 }
276
277 @Override
278 protected Bitmap doInBackground(final Attachment... params) {
279 this.attachment = params[0];
280 final XmppActivity activity = XmppActivity.find(imageViewReference);
281 if (activity == null) {
282 return null;
283 }
284 return activity.xmppConnectionService
285 .getFileBackend()
286 .getPreviewForUri(this.attachment, mediaSize, false);
287 }
288
289 @Override
290 protected void onPostExecute(Bitmap bitmap) {
291 if (bitmap != null && !isCancelled()) {
292 final ImageView imageView = imageViewReference.get();
293 if (imageView != null) {
294 imageView.setImageBitmap(bitmap);
295 imageView.setBackgroundColor(0x00000000);
296 }
297 }
298 }
299 }
300}