implement messages deletion

res/values/strings.xml

@@ -179,6 +179,10 @@
         <item quantity="one">This will permanently delete the selected message.</item>
         <item quantity="other">This will permanently delete all %1$d selected messages.</item>
     </plurals>
+    <plurals name="ConversationFragment_this_will_delete_n_selected_messages_here_and_on_server">
+        <item quantity="one">This will permanently delete the selected message here and on the server.</item>
+        <item quantity="other">This will permanently delete all %1$d selected messages here and one the server.</item>
+    </plurals>
     <string name="ConversationFragment_save_to_sd_card">Save to storage?</string>
     <plurals name="ConversationFragment_saving_n_media_to_storage_warning">
         <item quantity="one">Saving this media to storage will allow any other apps on your device to access it.\n\nContinue?</item>

src/com/b44t/messenger/DcMsg.java

@@ -33,6 +33,7 @@ import org.thoughtcrime.securesms.recipients.RecipientProvider;
 
 import java.util.Collections;
 import java.util.List;
+import java.util.Set;
 
 public class DcMsg {
 
@@ -114,6 +115,15 @@ public class DcMsg {
     public native void    setMediainfo       (String author, String trackname);
 
     // aliases and higher-level tools
+    public static int[] msgSetToIds(final Set<DcMsg> dcMsgs) {
+        int   cnt = dcMsgs==null? 0 : dcMsgs.size();
+        int[] ids = new int[cnt];
+        int   i = 0;
+        for (DcMsg dcMsg : dcMsgs) {
+            ids[i++] = dcMsg.getId();
+        }
+        return ids;
+    }
 
     public boolean isOutgoing() {
         return getFromId() == DcContact.DC_CONTACT_ID_SELF;

src/org/thoughtcrime/securesms/ConversationFragment.java

@@ -347,38 +347,14 @@ public class ConversationFragment extends Fragment
 
     builder.setIconAttribute(R.attr.dialog_alert_icon);
     builder.setTitle(getActivity().getResources().getQuantityString(R.plurals.ConversationFragment_delete_selected_messages, messagesCount, messagesCount));
-    builder.setMessage(getActivity().getResources().getQuantityString(R.plurals.ConversationFragment_this_will_permanently_delete_all_n_selected_messages, messagesCount, messagesCount));
+    builder.setMessage(getActivity().getResources().getQuantityString(R.plurals.ConversationFragment_this_will_delete_n_selected_messages_here_and_on_server, messagesCount, messagesCount));
     builder.setCancelable(true);
 
     builder.setPositiveButton(R.string.delete, new DialogInterface.OnClickListener() {
       @Override
       public void onClick(DialogInterface dialog, int which) {
-        /* TODO: delete messages
-        new ProgressDialogAsyncTask<MessageRecord, Void, Void>(getActivity(),
-                                                               R.string.ConversationFragment_deleting,
-                                                               R.string.ConversationFragment_deleting_messages)
-        {
-          @Override
-          protected Void doInBackground(MessageRecord... messageRecords) {
-            for (MessageRecord messageRecord : messageRecords) {
-              boolean threadDeleted;
-
-              if (messageRecord.isMms()) {
-                threadDeleted = DatabaseFactory.getMmsDatabase(getActivity()).delete(messageRecord.getId());
-              } else {
-                threadDeleted = DatabaseFactory.getSmsDatabase(getActivity()).deleteMessage(messageRecord.getId());
-              }
-
-              if (threadDeleted) {
-                threadId = -1;
-                listener.setThreadId(threadId);
-              }
-            }
-
-            return null;
-          }
-        }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, messageRecords.toArray(new MessageRecord[messageRecords.size()]));
-        */
+        int[] ids = DcMsg.msgSetToIds(messageRecords);
+        dcContext.deleteMsgs(ids);
       }
     });