Immediately display connect errors in the login page

This is using a Kirigami.InlineMessage component.

imports/NeoChat/Page/LoginPage.qml

@@ -19,6 +19,16 @@ Kirigami.ScrollablePage {
 
     title: i18n("Login")
 
+    header: QQC2.Control {
+        padding: Kirigami.Units.smallSpacing
+        contentItem: Kirigami.InlineMessage {
+            id: inlineMessage
+            type: Kirigami.MessageType.Error
+            visible: false
+            showCloseButton: true
+        }
+    }
+
     Kirigami.FormLayout {
         id: formLayout
         QQC2.TextField {
@@ -51,6 +61,18 @@ Kirigami.ScrollablePage {
             text: i18n("Login")
             onClicked: doLogin()
         }
+
+        Connections {
+            target: Controller
+            onErrorOccured: {
+                if (detail.length !== 0) {
+                    inlineMessage.text = i18n("%1: %2", error, detail);
+                } else {
+                    inlineMessage.text = error;
+                }
+                inlineMessage.visible = true;
+            }
+        }
     }
 
     function doLogin() {

qml/main.qml

@@ -151,7 +151,7 @@ Kirigami.ApplicationWindow {
                 pageStack.replace("qrc:/imports/NeoChat/Page/LoginPage.qml")
         }
 
-        onErrorOccured: showPassiveNotification(error + ": " + detail)
+        onGlobalErrorOccured: showPassiveNotification(error + ": " + detail)
     }
 
     RoomListModel {

src/controller.cpp

@@ -117,17 +117,16 @@ void Controller::loginWithCredentials(QString serverAddr, QString user, QString
                     setActiveConnection(finalConn);
                 });
                 connect(finalConn, &Connection::networkError, [=](QString error, QString, int, int) {
-                    Q_EMIT errorOccured(i18n("Network Error"), error);
+                    Q_EMIT globalErrorOccured(i18n("Network Error"), error);
                 });
                 connect(finalConn, &Connection::loginError, [=](QString error, QString) {
                     Q_EMIT errorOccured(i18n("Login Failed"), error);
                 });
-            } else {
-                Q_EMIT errorOccured(i18n("Error connecting to server"), "");
             }
         });
-        connect(conn, &Connection::networkError, this, [=](QString error, QString, int, int) {
+        connect(job, &BaseJob::retryScheduled, this, [=](int, Quotient::BaseJob::duration_ms_t) {
-            Q_EMIT errorOccured(i18n("Network Error"), error);
+            Q_EMIT errorOccured(i18n("%1 is not a matrix server or is unreachable", serverUrl.toString()), QString());
+            job->abandon();
         });
     }
 }

src/controller.h

@@ -88,7 +88,11 @@ private Q_SLOTS:
 
 Q_SIGNALS:
     void busyChanged();
+    /// Error occured because of user inputs
     void errorOccured(QString error, QString detail);
+
+    /// Error occured because of server or bug in NeoChat
+    void globalErrorOccured(QString error, QString detail);
     void syncDone();
     void connectionAdded(Quotient::Connection *conn);
     void connectionDropped(Quotient::Connection *conn);