set content description for all avatars

src/main/java/eu/siacs/conversations/entities/Account.java

@@ -615,6 +615,11 @@ public class Account extends AbstractEntity implements AvatarService.Avatarable
         return UIHelper.getColorForName(jid.asBareJid().toString());
     }
 
+    @Override
+    public String getAvatarName() {
+        throw new IllegalStateException("This method should not be called");
+    }
+
     public enum State {
         DISABLED(false, false),
         OFFLINE(false),

src/main/java/eu/siacs/conversations/entities/Bookmark.java

@@ -248,4 +248,9 @@ public class Bookmark extends Element implements ListItem {
 	public int getAvatarBackgroundColor() {
 		return UIHelper.getColorForName(jid != null ? jid.asBareJid().toString() : getDisplayName());
 	}
+
+	@Override
+	public String getAvatarName() {
+		return getDisplayName();
+	}
 }

src/main/java/eu/siacs/conversations/entities/Contact.java

@@ -558,6 +558,11 @@ public class Contact implements ListItem, Blockable {
 		return UIHelper.getColorForName(jid != null ? jid.asBareJid().toString() : getDisplayName());
 	}
 
+	@Override
+	public String getAvatarName() {
+		return getDisplayName();
+	}
+
 	public boolean hasAvatarOrPresenceName() {
 		return (avatar != null && avatar.getFilename() != null) || presenceName != null;
 	}

src/main/java/eu/siacs/conversations/entities/Conversation.java

@@ -1066,6 +1066,11 @@ public class Conversation extends AbstractEntity implements Blockable, Comparabl
         return UIHelper.getColorForName(getName().toString());
     }
 
+    @Override
+    public String getAvatarName() {
+        return getName().toString();
+    }
+
     public interface OnMessageFound {
         void onMessageFound(final Message message);
     }

src/main/java/eu/siacs/conversations/entities/Message.java

@@ -684,6 +684,11 @@ public class Message extends AbstractEntity implements AvatarService.Avatarable
 		}
 	}
 
+	@Override
+	public String getAvatarName() {
+		return UIHelper.getMessageDisplayName(this);
+	}
+
 	public boolean isOOb() {
 		return oob;
 	}

src/main/java/eu/siacs/conversations/entities/MucOptions.java

@@ -900,5 +900,10 @@ public class MucOptions {
             final String seed = realJid != null ? realJid.asBareJid().toString() : null;
             return UIHelper.getColorForName(seed == null ? getName() : seed);
         }
+
+        @Override
+        public String getAvatarName() {
+            return getConversation().getName().toString();
+        }
     }
 }

src/main/java/eu/siacs/conversations/entities/RawBlockable.java

@@ -79,6 +79,11 @@ public class RawBlockable implements ListItem, Blockable {
         return  UIHelper.getColorForName(jid.toEscapedString());
     }
 
+    @Override
+    public String getAvatarName() {
+        return getDisplayName();
+    }
+
     @Override
     public int compareTo(ListItem o) {
         return this.getDisplayName().compareToIgnoreCase(

src/main/java/eu/siacs/conversations/entities/Room.java

@@ -55,6 +55,11 @@ public class Room implements AvatarService.Avatarable, Comparable<Room> {
         return UIHelper.getColorForName(room != null ? room.asBareJid().toEscapedString() : name);
     }
 
+    @Override
+    public String getAvatarName() {
+        return name;
+    }
+
     @Override
     public boolean equals(Object o) {
         if (this == o) return true;

src/main/java/eu/siacs/conversations/services/AvatarService.java

@@ -685,5 +685,6 @@ public class AvatarService implements OnAdvancedStreamFeaturesLoaded {
 
 	public interface Avatarable {
 		@ColorInt int getAvatarBackgroundColor();
+		String getAvatarName();
 	}
 }

src/main/java/eu/siacs/conversations/ui/util/AvatarWorkerTask.java

@@ -1,5 +1,6 @@
 package eu.siacs.conversations.ui.util;
 
+import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Bitmap;
 import android.graphics.drawable.BitmapDrawable;
@@ -11,11 +12,10 @@ import android.widget.ImageView;
 import java.lang.ref.WeakReference;
 import java.util.concurrent.RejectedExecutionException;
 
+import eu.siacs.conversations.R;
 import eu.siacs.conversations.entities.Account;
 import eu.siacs.conversations.services.AvatarService;
 import eu.siacs.conversations.ui.XmppActivity;
-import eu.siacs.conversations.ui.adapter.AccountAdapter;
-import eu.siacs.conversations.utils.UIHelper;
 
 public class AvatarWorkerTask extends AsyncTask<AvatarService.Avatarable, Void, Bitmap> {
     private final WeakReference<ImageView> imageViewReference;
@@ -80,6 +80,7 @@ public class AvatarWorkerTask extends AsyncTask<AvatarService.Avatarable, Void,
                 return;
             }
             final Bitmap bm = activity.avatarService().get(avatarable, (int) activity.getResources().getDimension(size), true);
+            setContentDescription(avatarable, imageView);
             if (bm != null) {
                 cancelPotentialWork(avatarable, imageView);
                 imageView.setImageBitmap(bm);
@@ -98,6 +99,15 @@ public class AvatarWorkerTask extends AsyncTask<AvatarService.Avatarable, Void,
         }
     }
 
+    private static void setContentDescription(final AvatarService.Avatarable avatarable, final ImageView imageView) {
+        final Context context = imageView.getContext();
+        if (avatarable instanceof Account) {
+            imageView.setContentDescription(context.getString(R.string.your_avatar));
+        } else {
+            imageView.setContentDescription(context.getString(R.string.avatar_for_x, avatarable.getAvatarName()));
+        }
+    }
+
     static class AsyncDrawable extends BitmapDrawable {
         private final WeakReference<AvatarWorkerTask> avatarWorkerTaskReference;
 

src/main/res/values/strings.xml

@@ -929,6 +929,8 @@
     <string name="could_not_correct_message">Could not correct message</string>
     <string name="search_all_conversations">All conversations</string>
     <string name="search_this_conversation">This conversation</string>
+    <string name="your_avatar">Your avatar</string>
+    <string name="avatar_for_x">Avatar for %s</string>
     <plurals name="view_users">
         <item quantity="one">View %1$d Participant</item>
         <item quantity="other">View %1$d Participants</item>