add progress dialog

src/login_dialog.cc

@@ -42,11 +42,21 @@ void LoginDialog::accept() {
   m_context->setConfig("addr", m_email->text());
   m_context->setConfig("mail_pw", m_password->text());
   m_context->configure();
+  m_progress = new QProgressDialog{"Connecting ...", "Cancel", 0, 1000,
+                                   static_cast<QWidget *>(parent())};
+  connect(m_progress, &QProgressDialog::canceled, this,
+          &LoginDialog::configureCanceled);
   QDialog::accept();
 }
 
 void LoginDialog::configureProgress(int permille, QString message) {
-  if (!permille) {
+  if (permille) {
+    m_progress->setValue(permille);
+    m_progress->setLabelText(message);
+  } else {
+    m_progress->close();
+    configureCanceled();
+
     QMessageBox messagebox;
     messagebox.setText("Login failed.");
     if (message.length() > 500) {
@@ -56,8 +66,12 @@ void LoginDialog::configureProgress(int permille, QString message) {
     }
     messagebox.setIcon(QMessageBox::Critical);
     messagebox.exec();
-    show();
   }
 }
 
+void LoginDialog::configureCanceled() {
+  m_progress->deleteLater();
+  show();
+}
+
 }  // namespace kappachat

src/login_dialog.hh

@@ -3,6 +3,7 @@
 #include "deltachat_context.hh"
 #include <QDialog>
 #include <QLineEdit>
+#include <QProgressDialog>
 
 namespace kappachat {
 
@@ -15,11 +16,13 @@ class LoginDialog : public QDialog {
  public slots:
   void accept() override;
   void configureProgress(int permille, QString message);
+  void configureCanceled();
 
  private:
   DeltachatContext *m_context;
   QLineEdit *m_email;
   QLineEdit *m_password;
+  QProgressDialog *m_progress;
 };
 
 }  // namespace kappachat