Automatically focus on input when opening a dialog

include/dialogs/CreateRoom.h

@@ -22,6 +22,7 @@ signals:
 
 protected:
         void paintEvent(QPaintEvent *event) override;
+        void showEvent(QShowEvent *event) override;
 
 private:
         void clearFields();

include/dialogs/InviteUsers.h

@@ -19,6 +19,7 @@ public:
 
 protected:
         void paintEvent(QPaintEvent *event) override;
+        void showEvent(QShowEvent *event) override;
 
 signals:
         void closing(bool isLeaving, QStringList invitees);

include/dialogs/JoinRoom.h

@@ -18,6 +18,7 @@ signals:
 
 protected:
         void paintEvent(QPaintEvent *event) override;
+        void showEvent(QShowEvent *event) override;
 
 private:
         FlatButton *confirmBtn_;

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);
+}