QML UI: implement a message area to show information to the user

This is just a quick first stab to do this, but it at least allows us to
share some information with the user.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

qt-gui.cpp

@@ -45,9 +45,14 @@ void run_ui()
 	QQmlContext *ctxt = engine.rootContext();
 	ctxt->setContextProperty("diveModel", &diveListModel);
 	engine.load(QUrl(QStringLiteral("qrc:///qml/main.qml")));
-	QObject *mainWindow = engine.rootObjects().value(0);
+	qqWindowObject = engine.rootObjects().value(0);
-	QQuickWindow *qml_window = qobject_cast<QQuickWindow *>(mainWindow);
+	if (!qqWindowObject) {
+		fprintf(stderr, "can't create window object\n");
+		exit(1);
+	}
+	QQuickWindow *qml_window = qobject_cast<QQuickWindow *>(qqWindowObject);
 	qml_window->setIcon(QIcon(":/subsurface-mobile-icon"));
+	qqWindowObject->setProperty("messageText", QVariant("Subsurface mobile startup"));
 #if !defined(Q_OS_ANDROID)
 	qml_window->setHeight(1200);
 	qml_window->setWidth(800);

qt-gui.h

@@ -9,4 +9,9 @@ void init_ui();
 void run_ui();
 void exit_ui();
 
+#if defined(SUBSURFACE_MOBILE)
+#include <QQuickWindow>
+extern QObject *qqWindowObject;
+#endif
+
 #endif // QT_GUI_H

qt-mobile/main.qml

@@ -8,6 +8,7 @@ import org.subsurfacedivelog.mobile 1.0
 ApplicationWindow {
 	title: qsTr("Subsurface mobile")
 	property bool fullscreen: true
+	property alias messageText: message.text
 	visible: true
 
 	StackView {
@@ -68,6 +69,20 @@ ApplicationWindow {
 					}
 				}
 
+				Rectangle {
+					id: messageArea
+					height: childrenRect.height
+					Layout.fillWidth: true
+
+					Text {
+						id: message
+						color: "#000000"
+						text: ""
+						styleColor: "#ff0000"
+						font.pointSize: 10
+					}
+				}
+
 			}
 		}
 	}

qt-mobile/qmlmanager.cpp

@@ -1,11 +1,19 @@
 #include "qmlmanager.h"
 #include <QUrl>
 #include <QSettings>
+#include <QDebug>
 
 #include "qt-models/divelistmodel.h"
 #include "divelist.h"
 #include "pref.h"
 #include "qthelper.h"
+#include "qt-gui.h"
+
+static void showMessage(const char *errorString)
+{
+	if (!qqWindowObject->setProperty("messageText", QVariant(errorString)))
+		qDebug() << "couldn't set property messageText to" << errorString;
+}
 
 QMLManager::QMLManager()
 {
@@ -25,20 +33,33 @@ void QMLManager::savePreferences()
 	s.setValue("email", cloudUserName());
 	s.setValue("password", cloudPassword());
 	s.sync();
+	if (!same_string(prefs.cloud_storage_email, qPrintable(cloudUserName()))) {
+		free(prefs.cloud_storage_email);
+		prefs.cloud_storage_email = strdup(qPrintable(cloudUserName()));
+	}
+	if (!same_string(prefs.cloud_storage_password, qPrintable(cloudPassword()))) {
+		free(prefs.cloud_storage_password);
+		prefs.cloud_storage_password = strdup(qPrintable(cloudPassword()));
+	}
 }
 
 void QMLManager::loadDives()
 {
 	QString url;
 	if (getCloudURL(url)) {
-		//TODO: Show error in QML
+		showMessage(get_error_string());
 		return;
 	}
+	showMessage("got email / password");
 
 	QByteArray fileNamePrt  = QFile::encodeName(url);
 	int error = parse_file(fileNamePrt.data());
 	if (!error) {
+		report_error("filename is now %s", fileNamePrt.data());
+		showMessage(get_error_string());
 		set_filename(fileNamePrt.data(), true);
+	} else {
+		showMessage(get_error_string());
 	}
 	process_dives(false, false);
 	int i;