QML UI: show better message about dive list at start

Now the message should make more sense. First it tells you that it's looking
for dives. Then you get some progress during the git download, and error
messages if things failed.

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

qt-mobile/qml/StartPage.qml

@@ -20,7 +20,7 @@ Item {
 			id: welcomeText
 			Layout.fillWidth: true
 			Layout.bottomMargin: MobileComponents.Units.largeSpacing
-			text: "No recorded dives found. You can download your dives to this device from the Subsurface cloud storage service, from your dive computer, or add them manually."
+			text: manager.startPageText
 			wrapMode: Text.WordWrap
 			Layout.columnSpan: 2
 		}

qt-mobile/qmlmanager.cpp

@@ -10,6 +10,7 @@
 #include "pref.h"
 #include "qthelper.h"
 #include "qt-gui.h"
+#include "git-access.h"
 
 QMLManager *QMLManager::m_instance = NULL;
 
@@ -20,14 +21,30 @@ static void appendTextToLogStandalone(const char *text)
 		mgr->appendTextToLog(QString(text));
 }
 
+extern "C" int gitProgressCB(int percent)
+{
+	static int lastPercent = -10;
+
+	if (percent - lastPercent >= 10) {
+		lastPercent += 10;
+		QMLManager *mgr = QMLManager::instance();
+		if (mgr)
+			mgr->loadDiveProgress(percent);
+	}
+	// return 0 so that we don't end the download
+	return 0;
+}
+
 QMLManager::QMLManager() :
 	m_locationServiceEnabled(false),
 	reply(0),
 	mgr(0)
 {
 	m_instance = this;
+	m_startPageText = tr("Searching for dive data");
 	// create location manager service
 	locationProvider = new GpsLocation(&appendTextToLogStandalone, this);
+	set_git_update_cb(&gitProgressCB);
 }
 
 void QMLManager::finishSetup()
@@ -40,6 +57,8 @@ void QMLManager::finishSetup()
 	if (!same_string(prefs.cloud_storage_email, "") &&
 	    !same_string(prefs.cloud_storage_password, ""))
 		tryRetrieveDataFromBackend();
+	else
+		m_startPageText = "No recorded dives found. You can download your dives to this device from the Subsurface cloud storage service, from your dive computer, or add them manually.";
 
 	setDistanceThreshold(prefs.distance_threshold);
 	setTimeThreshold(prefs.time_threshold / 60);
@@ -150,6 +169,7 @@ void QMLManager::provideAuth(QNetworkReply *reply, QAuthenticator *auth)
 
 void QMLManager::handleSslErrors(const QList<QSslError> &errors)
 {
+	setStartPageText(tr("Cannot open cloud storage: Error creating https connection"));
 	Q_FOREACH(QSslError e, errors) {
 		qDebug() << e.errorString();
 	}
@@ -159,7 +179,9 @@ void QMLManager::handleSslErrors(const QList<QSslError> &errors)
 
 void QMLManager::handleError(QNetworkReply::NetworkError nError)
 {
-	qDebug() << "handleError" << nError << reply->errorString();
+	QString errorString = reply->errorString();
+	qDebug() << "handleError" << nError << errorString;
+	setStartPageText(tr("Cannot open cloud storage: %1").arg(errorString));
 	reply->abort();
 	reply->deleteLater();
 }
@@ -185,16 +207,30 @@ void QMLManager::retrieveUserid()
 		loadDivesWithValidCredentials();
 }
 
+void QMLManager::loadDiveProgress(int percent)
+{
+	QString text(tr("Loading dive list from cloud storage."));
+	while(percent > 0) {
+		text.append(".");
+		percent -= 10;
+	}
+	setStartPageText(text);
+}
+
 void QMLManager::loadDivesWithValidCredentials()
 {
 	if (reply->attribute(QNetworkRequest::HttpStatusCodeAttribute) != 302) {
 		appendTextToLog(QString("Cloud storage connection not working correctly: ") + reply->readAll());
+		setStartPageText(tr("Cannot connect to cloud storage"));
 		return;
 	}
 	appendTextToLog("Cloud credentials valid, loading dives...");
+	loadDiveProgress(0);
 	QString url;
 	if (getCloudURL(url)) {
-		appendTextToLog(get_error_string());
+		QString errorString(get_error_string());
+		appendTextToLog(errorString);
+		setStartPageText(tr("Cloud storage error: %1").arg(errorString));
 		return;
 	}
 	clear_dive_file_data();
@@ -208,8 +244,9 @@ void QMLManager::loadDivesWithValidCredentials()
 		set_filename(fileNamePrt.data(), true);
 	} else {
 		report_error("failed to open file %s", fileNamePrt.data());
-		const char *error_string = get_error_string();
+		QString errorString(get_error_string());
-		appendTextToLog(error_string);
+		appendTextToLog(errorString);
+		setStartPageText(tr("Cloud storage error: %1").arg(errorString));
 		return;
 	}
 	process_dives(false, false);
@@ -222,6 +259,8 @@ void QMLManager::loadDivesWithValidCredentials()
 		DiveListModel::instance()->addDive(d);
 	}
 	appendTextToLog(QString("%1 dives loaded").arg(i));
+	if (dive_table.nr == 0)
+		setStartPageText(tr("Cloud storage open successfully. No dives in dive list."));
 	setLoadFromCloud(true);
 }
 
@@ -393,3 +432,14 @@ void QMLManager::setLoadFromCloud(bool done)
 	m_loadFromCloud = done;
 	emit loadFromCloudChanged();
 }
+
+QString QMLManager::startPageText() const
+{
+	return m_startPageText;
+}
+
+void QMLManager::setStartPageText(QString text)
+{
+	m_startPageText = text;
+	emit startPageTextChanged();
+}

qt-mobile/qmlmanager.h

@@ -18,6 +18,7 @@ class QMLManager : public QObject
 	Q_PROPERTY(int distanceThreshold READ distanceThreshold WRITE setDistanceThreshold NOTIFY distanceThresholdChanged)
 	Q_PROPERTY(int timeThreshold READ timeThreshold WRITE setTimeThreshold NOTIFY timeThresholdChanged)
 	Q_PROPERTY(bool loadFromCloud READ loadFromCloud WRITE setLoadFromCloud NOTIFY loadFromCloudChanged)
+	Q_PROPERTY(QString startPageText READ startPageText WRITE setStartPageText NOTIFY startPageTextChanged)
 public:
 	QMLManager();
 	~QMLManager();
@@ -45,6 +46,9 @@ public:
 	bool loadFromCloud() const;
 	void setLoadFromCloud(bool done);
 
+	QString startPageText() const;
+	void setStartPageText(QString text);
+
 	QString logText() const;
 	void setLogText(const QString &logText);
 	void appendTextToLog(const QString &newText);
@@ -61,6 +65,7 @@ public slots:
 	void retrieveUserid();
 	void loadDives();
 	void loadDivesWithValidCredentials();
+	void loadDiveProgress(int percent);
 	void provideAuth(QNetworkReply *reply, QAuthenticator *auth);
 	void commitChanges(QString diveId, QString suit, QString buddy, QString diveMaster, QString notes);
 	void saveChanges();
@@ -74,6 +79,7 @@ private:
 	QString m_cloudUserName;
 	QString m_cloudPassword;
 	QString m_ssrfGpsWebUserid;
+	QString m_startPageText;
 	bool m_saveCloudPassword;
 	QString m_logText;
 	bool m_locationServiceEnabled;
@@ -95,6 +101,7 @@ signals:
 	void timeThresholdChanged();
 	void distanceThresholdChanged();
 	void loadFromCloudChanged();
+	void startPageTextChanged();
 };
 
 #endif