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;
13import androidx.annotation.DimenRes;
14import androidx.annotation.DrawableRes;
15import androidx.annotation.NonNull;
16import androidx.core.widget.ImageViewCompat;
17import androidx.databinding.DataBindingUtil;
18import androidx.recyclerview.widget.RecyclerView;
19import com.google.android.material.color.MaterialColors;
20import com.google.common.base.Strings;
21import eu.siacs.conversations.R;
22import eu.siacs.conversations.databinding.ItemMediaBinding;
23import eu.siacs.conversations.ui.XmppActivity;
24import eu.siacs.conversations.ui.util.Attachment;
25import eu.siacs.conversations.ui.util.ViewUtil;
26import eu.siacs.conversations.worker.ExportBackupWorker;
27import java.lang.ref.WeakReference;
28import java.util.ArrayList;
29import java.util.Arrays;
30import java.util.List;
31import java.util.concurrent.RejectedExecutionException;
32
33public class MediaAdapter extends RecyclerView.Adapter<MediaAdapter.MediaViewHolder> {
34
35 public static final List<String> DOCUMENT_MIMES =
36 Arrays.asList(
37 "application/pdf",
38 "application/vnd.oasis.opendocument.text",
39 "application/msword",
40 "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
41 "text/x-tex",
42 "text/plain");
43 public static final List<String> SPREAD_SHEET_MIMES =
44 Arrays.asList(
45 "text/comma-separated-values",
46 "application/vnd.ms-excel",
47 "application/vnd.stardivision.calc",
48 "application/vnd.oasis.opendocument.spreadsheet",
49 "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
50
51 public static final List<String> SLIDE_SHOW_MIMES =
52 Arrays.asList(
53 "application/vnd.ms-powerpoint",
54 "application/vnd.stardivision.impress",
55 "application/vnd.oasis.opendocument.presentation",
56 "application/vnd.openxmlformats-officedocument.presentationml.presentation",
57 "application/vnd.openxmlformats-officedocument.presentationml.slideshow");
58
59 private static final List<String> ARCHIVE_MIMES =
60 Arrays.asList(
61 "application/x-7z-compressed",
62 "application/zip",
63 "application/rar",
64 "application/x-gtar",
65 "application/x-tar");
66 public static final List<String> CODE_MIMES = Arrays.asList("text/html", "text/xml");
67
68 private final ArrayList<Attachment> attachments = new ArrayList<>();
69
70 private final XmppActivity activity;
71
72 private int mediaSize = 0;
73
74 public MediaAdapter(XmppActivity activity, @DimenRes int mediaSize) {
75 this.activity = activity;
76 this.mediaSize = Math.round(activity.getResources().getDimension(mediaSize));
77 }
78
79 @SuppressWarnings("rawtypes")
80 public static void setMediaSize(final RecyclerView recyclerView, int mediaSize) {
81 final RecyclerView.Adapter adapter = recyclerView.getAdapter();
82 if (adapter instanceof MediaAdapter mediaAdapter) {
83 mediaAdapter.setMediaSize(mediaSize);
84 }
85 }
86
87 public static @DrawableRes int getImageDrawable(final Attachment attachment) {
88 if (attachment.getType() == Attachment.Type.LOCATION) {
89 return R.drawable.ic_location_pin_48dp;
90 } else if (attachment.getType() == Attachment.Type.RECORDING) {
91 return R.drawable.ic_mic_48dp;
92 } else {
93 return getImageDrawable(attachment.getMime());
94 }
95 }
96
97 private static @DrawableRes int getImageDrawable(final String mime) {
98
99 // TODO ideas for more mime types: XML, HTML documents, GPG/PGP files, eml files,
100 // spreadsheets (table symbol)
101
102 // add bz2 and tar.gz to archive detection
103
104 if (Strings.isNullOrEmpty(mime)) {
105 return R.drawable.ic_help_center_48dp;
106 } else if (mime.equals("audio/x-m4b")) {
107 return R.drawable.ic_play_lesson_48dp;
108 } else if (mime.startsWith("audio/")) {
109 return R.drawable.ic_headphones_48dp;
110 } else if (mime.equals("text/calendar") || (mime.equals("text/x-vcalendar"))) {
111 return R.drawable.ic_event_48dp;
112 } else if (mime.equals("text/x-vcard")) {
113 return R.drawable.ic_person_48dp;
114 } else if (mime.equals("application/vnd.android.package-archive")) {
115 return R.drawable.ic_adb_48dp;
116 } else if (ARCHIVE_MIMES.contains(mime)) {
117 return R.drawable.ic_archive_48dp;
118 } else if (mime.equals("application/epub+zip")
119 || mime.equals("application/vnd.amazon.mobi8-ebook")) {
120 return R.drawable.ic_book_48dp;
121 } else if (mime.equals(ExportBackupWorker.MIME_TYPE)) {
122 return R.drawable.ic_backup_48dp;
123 } else if (DOCUMENT_MIMES.contains(mime)) {
124 return R.drawable.ic_description_48dp;
125 } else if (SPREAD_SHEET_MIMES.contains(mime)) {
126 return R.drawable.ic_table_48dp;
127 } else if (SLIDE_SHOW_MIMES.contains(mime)) {
128 return R.drawable.ic_slideshow_48dp;
129 } else if (mime.equals("application/gpx+xml")) {
130 return R.drawable.ic_tour_48dp;
131 } else if (mime.startsWith("image/")) {
132 return R.drawable.ic_image_48dp;
133 } else if (mime.startsWith("video/")) {
134 return R.drawable.ic_movie_48dp;
135 } else if (CODE_MIMES.contains(mime)) {
136 return R.drawable.ic_code_48dp;
137 } else if (mime.equals("message/rfc822")) {
138 return R.drawable.ic_email_48dp;
139 } else {
140 return R.drawable.ic_help_center_48dp;
141 }
142 }
143
144 static void renderPreview(final Attachment attachment, final ImageView imageView) {
145 ImageViewCompat.setImageTintList(
146 imageView,
147 ColorStateList.valueOf(
148 MaterialColors.getColor(
149 imageView, com.google.android.material.R.attr.colorOnSurface)));
150 imageView.setImageResource(getImageDrawable(attachment));
151 imageView.setBackgroundColor(
152 MaterialColors.getColor(
153 imageView,
154 com.google.android.material.R.attr.colorSurfaceContainerHighest));
155 }
156
157 private static boolean cancelPotentialWork(Attachment attachment, ImageView imageView) {
158 final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
159
160 if (bitmapWorkerTask != null) {
161 final Attachment oldAttachment = bitmapWorkerTask.attachment;
162 if (oldAttachment == null || !oldAttachment.equals(attachment)) {
163 bitmapWorkerTask.cancel(true);
164 } else {
165 return false;
166 }
167 }
168 return true;
169 }
170
171 private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
172 if (imageView != null) {
173 final Drawable drawable = imageView.getDrawable();
174 if (drawable instanceof AsyncDrawable asyncDrawable) {
175 return asyncDrawable.getBitmapWorkerTask();
176 }
177 }
178 return null;
179 }
180
181 @NonNull
182 @Override
183 public MediaViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
184 final LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
185 ItemMediaBinding binding =
186 DataBindingUtil.inflate(layoutInflater, R.layout.item_media, parent, false);
187 return new MediaViewHolder(binding);
188 }
189
190 @Override
191 public void onBindViewHolder(@NonNull MediaViewHolder holder, int position) {
192 final Attachment attachment = attachments.get(position);
193 if (attachment.renderThumbnail()) {
194 loadPreview(attachment, holder.binding.media);
195 } else {
196 cancelPotentialWork(attachment, holder.binding.media);
197 renderPreview(attachment, holder.binding.media);
198 }
199 holder.binding.getRoot().setOnClickListener(v -> ViewUtil.view(activity, attachment));
200 }
201
202 public void setAttachments(final List<Attachment> attachments) {
203 this.attachments.clear();
204 this.attachments.addAll(attachments);
205 notifyDataSetChanged();
206 }
207
208 private void setMediaSize(int mediaSize) {
209 this.mediaSize = mediaSize;
210 }
211
212 private void loadPreview(Attachment attachment, ImageView imageView) {
213 if (cancelPotentialWork(attachment, imageView)) {
214 final Bitmap bm =
215 activity.xmppConnectionService
216 .getFileBackend()
217 .getPreviewForUri(attachment, mediaSize, true);
218 if (bm != null) {
219 cancelPotentialWork(attachment, imageView);
220 imageView.setImageBitmap(bm);
221 imageView.setBackgroundColor(Color.TRANSPARENT);
222 } else {
223 // TODO consider if this is still a good, general purpose loading color
224 imageView.setBackgroundColor(0xff333333);
225 imageView.setImageDrawable(null);
226 final BitmapWorkerTask task = new BitmapWorkerTask(mediaSize, imageView);
227 final AsyncDrawable asyncDrawable =
228 new AsyncDrawable(activity.getResources(), null, task);
229 imageView.setImageDrawable(asyncDrawable);
230 try {
231 task.execute(attachment);
232 } catch (final RejectedExecutionException ignored) {
233 }
234 }
235 }
236 }
237
238 @Override
239 public int getItemCount() {
240 return attachments.size();
241 }
242
243 static class AsyncDrawable extends BitmapDrawable {
244 private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
245
246 AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
247 super(res, bitmap);
248 bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
249 }
250
251 BitmapWorkerTask getBitmapWorkerTask() {
252 return bitmapWorkerTaskReference.get();
253 }
254 }
255
256 static class MediaViewHolder extends RecyclerView.ViewHolder {
257
258 private final ItemMediaBinding binding;
259
260 MediaViewHolder(ItemMediaBinding binding) {
261 super(binding.getRoot());
262 this.binding = binding;
263 }
264 }
265
266 private static class BitmapWorkerTask extends AsyncTask<Attachment, Void, Bitmap> {
267 private final WeakReference<ImageView> imageViewReference;
268 private Attachment attachment = null;
269 private final int mediaSize;
270
271 BitmapWorkerTask(int mediaSize, ImageView imageView) {
272 this.mediaSize = mediaSize;
273 imageViewReference = new WeakReference<>(imageView);
274 }
275
276 @Override
277 protected Bitmap doInBackground(final Attachment... params) {
278 this.attachment = params[0];
279 final XmppActivity activity = XmppActivity.find(imageViewReference);
280 if (activity == null) {
281 return null;
282 }
283 return activity.xmppConnectionService
284 .getFileBackend()
285 .getPreviewForUri(this.attachment, mediaSize, false);
286 }
287
288 @Override
289 protected void onPostExecute(Bitmap bitmap) {
290 if (bitmap != null && !isCancelled()) {
291 final ImageView imageView = imageViewReference.get();
292 if (imageView != null) {
293 imageView.setImageBitmap(bitmap);
294 imageView.setBackgroundColor(0x00000000);
295 }
296 }
297 }
298 }
299}