Qt UI: Fix manual network conf interface selection

In the Install Environment, if only one interface was available, we made
the UI show that there was only one interface, but didn't set it as the
chosen interface in the Wizard object.  This caused installation to fail.

In the Runtime Environment, it was possible to choose Continue without
typing an interface name.  This would cause installation to fail.

Closes: #380

1 files changed, 7 insertions, 0 deletions

diff --git a/ui/qt5/netmanualpage.cc b/ui/qt5/netmanualpage.cc
index 1486461..4e3ffea 100644
--- a/ui/qt5/netmanualpage.cc
+++ b/ui/qt5/netmanualpage.cc
@@ -198,6 +198,7 @@ void NetManualPage::initializePage() {
             tr("Configuring interface %1 (%2)")
             .arg(QString::fromStdString(iface->first))
             .arg(iface->second.mac)));
+        horizonWizard()->chosen_auto_iface = iface->first;
     }
 #else   /* !HAS_INSTALL_ENV */
     QLineEdit *ifaceBox = new QLineEdit;
@@ -206,6 +207,7 @@ void NetManualPage::initializePage() {
     ifaceWidget->layout()->addWidget(ifaceBox);
     connect(ifaceBox, &QLineEdit::textEdited, [=] {
         horizonWizard()->chosen_auto_iface = ifaceBox->text().toStdString();
+        emit completeChanged();
     });
 #endif  /* HAS_INSTALL_ENV */
 
@@ -220,6 +222,11 @@ void NetManualPage::initializePage() {
 #include <iostream>
 
 bool NetManualPage::isComplete() const {
+#ifndef HAS_INSTALL_ENV
+    /* Ensure an interface has been chosen. */
+    if(horizonWizard()->chosen_auto_iface.empty()) return false;
+#endif  /* !HAS_INSTALL_ENV */
+
     /* REQ: UI.Network.Manual.Enable: At least one must be ticked. */
     if(!useV6->isChecked() && !useV4->isChecked()) return false;