mobile: add status text for cloud sync state

This allows the mobile UI to reflect the three states that the dive list can be
in:
- changes that haven't been written to local storage
- there potentially are changes in local storage that were not synced with the cloud
- dive list is in sync with cloud storage

The last state could be misleading if the user access the cloud from a
different device and makes changes to the cloud storage from there, but from
the point of view of this device, the states are consistent.

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

2 files changed, 17 insertions, 0 deletions

diff --git a/mobile-widgets/qmlmanager.cpp b/mobile-widgets/qmlmanager.cpp
index be4dc4ec3..6e5357cdc 100644
--- a/mobile-widgets/qmlmanager.cpp
+++ b/mobile-widgets/qmlmanager.cpp
@@ -733,6 +733,7 @@ void QMLManager::loadDivesWithValidCredentials()
 		appendTextToLog(QStringLiteral("%1 dives loaded after importing nocloud local storage").arg(dive_table.nr));
 		noCloudToCloud = false;
 		mark_divelist_changed(true);
+		emit syncStateChanged();
 		saveChangesLocal();
 		if (git_local_only == false) {
 			appendTextToLog(QStringLiteral("taking things back offline now that storage is synced"));
@@ -1292,6 +1293,7 @@ void QMLManager::changesNeedSaving()
 	// on iOS
 	// on all other platforms we just save the changes and be done with it
 	mark_divelist_changed(true);
+	emit syncStateChanged();
 #if defined(Q_OS_IOS)
 	saveChangesLocal();
 #else
@@ -2251,4 +2253,15 @@ QStringList QMLManager::cloudCacheList() const
 void QMLManager::updateHaveLocalChanges(bool status)
 {
 	localChanges = status;
+	emit syncStateChanged();
+}
+
+// show the state of the dive list
+QString QMLManager::getSyncState() const
+{
+	if (unsavedChanges())
+		return tr("(unsaved changes in memory)");
+	if (localChanges)
+		return tr("(changes synced locally)");
+	return tr("(synced with cloud)");
 }
diff --git a/mobile-widgets/qmlmanager.h b/mobile-widgets/qmlmanager.h
index a40a9da3c..250493e79 100644
--- a/mobile-widgets/qmlmanager.h
+++ b/mobile-widgets/qmlmanager.h
@@ -60,6 +60,7 @@ class QMLManager : public QObject {
 	Q_PROPERTY(QString redoText READ getRedoText NOTIFY redoTextChanged) // this is a read-only property
 	Q_PROPERTY(bool diveListProcessing MEMBER m_diveListProcessing  WRITE setDiveListProcessing NOTIFY diveListProcessingChanged)
 	Q_PROPERTY(bool initialized MEMBER m_initialized NOTIFY initializedChanged)
+	Q_PROPERTY(QString syncState READ getSyncState NOTIFY syncStateChanged)
 
 public:
 	QMLManager();
@@ -175,6 +176,8 @@ public:
 	void setOldStatus(const qPrefCloudStorage::cloud_status value);
 	void rememberOldStatus();
 
+	QString getSyncState() const;
+
 public slots:
 	void appInitialized();
 	void applicationStateChanged(Qt::ApplicationState state);
@@ -317,6 +320,7 @@ signals:
 	void undoTextChanged();
 	void redoTextChanged();
 	void restartDownloadSignal();
+	void syncStateChanged();
 
 	// From upload process
 	void uploadFinish(bool success, const QString &text);