Automatically focus on input when opening a dialog

src/dialogs/CreateRoom.cc

@@ -152,3 +152,11 @@ CreateRoom::paintEvent(QPaintEvent *)
         QPainter p(this);
         style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
 }
+
+void
+CreateRoom::showEvent(QShowEvent *event)
+{
+        nameInput_->setFocus();
+
+        QFrame::showEvent(event);
+}

src/dialogs/InviteUsers.cc

@@ -147,3 +147,11 @@ InviteUsers::invitedUsers() const
 
         return users;
 }
+
+void
+InviteUsers::showEvent(QShowEvent *event)
+{
+        inviteeInput_->setFocus();
+
+        QFrame::showEvent(event);
+}

src/dialogs/JoinRoom.cc

@@ -59,3 +59,11 @@ JoinRoom::paintEvent(QPaintEvent *)
         QPainter p(this);
         style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
 }
+
+void
+JoinRoom::showEvent(QShowEvent *event)
+{
+        roomInput_->setFocus();
+
+        QFrame::showEvent(event);
+}