implement room destruction

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

@@ -2822,6 +2822,26 @@ public class XmppConnectionService extends Service {
 		});
 	}
 
+    public void destroyRoom(final Conversation conversation, final OnRoomDestroy callback) {
+        IqPacket request = new IqPacket(IqPacket.TYPE.SET);
+        request.setTo(conversation.getJid().asBareJid());
+        request.query("http://jabber.org/protocol/muc#owner").addChild("destroy");
+        sendIqPacket(conversation.getAccount(), request, new OnIqPacketReceived() {
+            @Override
+            public void onIqPacketReceived(Account account, IqPacket packet) {
+                if (packet.getType() == IqPacket.TYPE.RESULT) {
+                    if (callback != null) {
+                        callback.onRoomDestroySucceeded();
+                    }
+                } else if (packet.getType() == IqPacket.TYPE.ERROR) {
+                    if (callback != null) {
+                        callback.onRoomDestroyFailed();
+                    }
+                }
+            }
+        });
+    }
+
 	private void disconnect(Account account, boolean force) {
 		if ((account.getStatus() == Account.State.ONLINE)
 				|| (account.getStatus() == Account.State.DISABLED)) {
@@ -4140,6 +4160,12 @@ public class XmppConnectionService extends Service {
 		void onPasswordChangeFailed();
 	}
 
+    public interface OnRoomDestroy {
+        void onRoomDestroySucceeded();
+
+        void onRoomDestroyFailed();
+    }
+
 	public interface OnAffiliationChanged {
 		void onAffiliationChangedSuccessful(Jid jid);
 

src/main/java/eu/siacs/conversations/ui/ConferenceDetailsActivity.java

@@ -72,7 +72,7 @@ import rocks.xmpp.addr.Jid;
 import static eu.siacs.conversations.entities.Bookmark.printableValue;
 import static eu.siacs.conversations.utils.StringUtils.changed;
 
-public class ConferenceDetailsActivity extends XmppActivity implements OnConversationUpdate, OnMucRosterUpdate, XmppConnectionService.OnAffiliationChanged, XmppConnectionService.OnRoleChanged, XmppConnectionService.OnConfigurationPushed, TextWatcher, OnMediaLoaded {
+public class ConferenceDetailsActivity extends XmppActivity implements OnConversationUpdate, OnMucRosterUpdate, XmppConnectionService.OnAffiliationChanged, XmppConnectionService.OnRoleChanged, XmppConnectionService.OnConfigurationPushed, XmppConnectionService.OnRoomDestroy, TextWatcher, OnMediaLoaded {
     public static final String ACTION_VIEW_MUC = "view_muc";
 
     private static final float INACTIVE_ALPHA = 0.4684f; //compromise between dark and light theme
@@ -319,6 +319,9 @@ public class ConferenceDetailsActivity extends XmppActivity implements OnConvers
             case R.id.action_delete_bookmark:
                 deleteBookmark();
                 break;
+            case R.id.action_destroy_room:
+                destroyRoom();
+                break;
             case R.id.action_advanced_mode:
                 this.mAdvancedMode = !menuItem.isChecked();
                 menuItem.setChecked(this.mAdvancedMode);
@@ -406,6 +409,7 @@ public class ConferenceDetailsActivity extends XmppActivity implements OnConvers
         MenuItem menuItemSaveBookmark = menu.findItem(R.id.action_save_as_bookmark);
         MenuItem menuItemDeleteBookmark = menu.findItem(R.id.action_delete_bookmark);
         MenuItem menuItemAdvancedMode = menu.findItem(R.id.action_advanced_mode);
+        MenuItem menuItemDestroyRoom = menu.findItem(R.id.action_destroy_room);
         menuItemAdvancedMode.setChecked(mAdvancedMode);
         if (mConversation == null) {
             return true;
@@ -417,6 +421,7 @@ public class ConferenceDetailsActivity extends XmppActivity implements OnConvers
             menuItemDeleteBookmark.setVisible(false);
             menuItemSaveBookmark.setVisible(true);
         }
+        menuItemDestroyRoom.setVisible(mConversation.getMucOptions().getSelf().getAffiliation().ranks(MucOptions.Affiliation.OWNER));
         return true;
     }
 
@@ -481,6 +486,19 @@ public class ConferenceDetailsActivity extends XmppActivity implements OnConvers
         updateView();
     }
 
+    protected void destroyRoom() {
+        AlertDialog.Builder builder = new AlertDialog.Builder(this);
+        builder.setTitle(R.string.destroy_room);
+        builder.setMessage(R.string.destroy_room_dialog);
+        builder.setPositiveButton(R.string.ok, (dialog, which) -> {
+            xmppConnectionService.destroyRoom(mConversation, ConferenceDetailsActivity.this);
+        });
+        builder.setNegativeButton(R.string.cancel, null);
+        final AlertDialog dialog = builder.create();
+        dialog.setCanceledOnTouchOutside(false);
+        dialog.show();
+    }
+
     @Override
     void onBackendConnected() {
         if (mPendingConferenceInvite != null) {
@@ -687,6 +705,15 @@ public class ConferenceDetailsActivity extends XmppActivity implements OnConvers
         displayToast(getString(resId, nick));
     }
 
+    @Override
+    public void onRoomDestroySucceeded() {
+        finish();
+    }
+    @Override
+    public void onRoomDestroyFailed() {
+        displayToast(getString(R.string.could_not_destroy_room));
+    }
+
     @Override
     public void onPushSucceeded() {
         displayToast(getString(R.string.modified_conference_options));

src/main/res/menu/muc_details.xml

@@ -31,6 +31,11 @@
         android:orderInCategory="80"
         app:showAsAction="never"
         android:title="@string/delete_bookmark"/>
+    <item
+        android:id="@+id/action_destroy_room"
+        android:orderInCategory="82"
+        app:showAsAction="never"
+        android:title="@string/destroy_room"/>
     <item
         android:id="@+id/action_advanced_mode"
         android:checkable="true"

src/main/res/values/strings.xml

@@ -228,6 +228,9 @@
     <string name="conference_address_example">room@conference.example.com/nick</string>
     <string name="save_as_bookmark">Save as bookmark</string>
     <string name="delete_bookmark">Delete bookmark</string>
+    <string name="destroy_room">Destroy group chat</string>
+    <string name="destroy_room_dialog">Are you sure you want to destroy this group chat?\n\n<b>Warning:</b> The group chat will be completely removed on the server.</string>
+    <string name="could_not_destroy_room">Could not destroy room</string>
     <string name="bookmark_already_exists">This bookmark already exists</string>
     <string name="action_edit_subject">Edit group chat subject</string>
     <string name="topic">Topic</string>