feat: create text particles in a stream

src/MainWindow.h

@@ -19,6 +19,7 @@ QT_END_NAMESPACE
 
 class AuthDialog;
 class SettingsDialog;
+class TextInputDialog;
 
 namespace Ui
 {
@@ -41,8 +42,10 @@ private slots:
 
   void onTreeSelectionChanged(const QItemSelection &selected, const QItemSelection &deselected);
   void onParticleSelectionChanged(const QItemSelection &selected, const QItemSelection &deselected);
+  void onTextMessageSubmitted(const QString &text);
 
 protected:
+  bool eventFilter(QObject *obj, QEvent *event) override;
   void mousePressEvent(QMouseEvent *event) override;
   void mouseMoveEvent(QMouseEvent *event) override;
   void mouseReleaseEvent(QMouseEvent *event) override;
@@ -58,12 +61,14 @@ private:
   AuthDialog *m_authDialog;
 
   SettingsDialog *m_settingsDialog;
+  TextInputDialog *m_textInputDialog;
 
   // Data and models
   Store *m_store;
   NetworkStreamModel *m_networkStreamModel;
   ParticleListModel *m_particleListModel;
 
+  void showTextInputDialog();
   void updateStatusBar();
   void updatePingIndicator();
   QString m_selectedParticleId;