GUI: Add SaveLoadCloudSyncProgressDialog

It's shown by SaveLoadChooserDialog when files are downloaded and some
save slots are locked. One can hide that dialog to interact with
non-locked slots or cancel saves sync completely. Dialog's label shows
current sync progress.

Dialog automatically hides itself when all files are downloaded.
WARNING: right now that results in a crash!

5 files changed, 57 insertions, 1 deletions

diff --git a/backends/cloud/cloudmanager.cpp b/backends/cloud/cloudmanager.cpp
index b4598d7a97..f5d60e025c 100644
--- a/backends/cloud/cloudmanager.cpp
+++ b/backends/cloud/cloudmanager.cpp
@@ -151,4 +151,14 @@ Common::Array<Common::String> CloudManager::getSyncingFiles() {
 	return Common::Array<Common::String>();
 }
 
+void CloudManager::cancelSync() {
+	Storage *storage = getCurrentStorage();
+	if (storage) storage->cancelSync();
+}
+
+void CloudManager::setSyncTarget(GUI::CommandReceiver *target) {
+	Storage *storage = getCurrentStorage();
+	if (storage) storage->setSyncTarget(target);
+}
+
 } // End of namespace Common
diff --git a/backends/cloud/cloudmanager.h b/backends/cloud/cloudmanager.h
index a02dc90008..c7351dab2e 100644
--- a/backends/cloud/cloudmanager.h
+++ b/backends/cloud/cloudmanager.h
@@ -27,6 +27,12 @@
 #include "common/array.h"
 #include "common/singleton.h"
 
+namespace GUI {
+
+class CommandReceiver;
+
+}
+
 namespace Cloud {
 
 class CloudManager : public Common::Singleton<CloudManager> {
@@ -89,6 +95,12 @@ public:
 
 	/** Returns an array of saves names which are not yet synced (thus cannot be used). */
 	Common::Array<Common::String> getSyncingFiles();
+
+	/** Cancels running sync. */
+	void cancelSync();
+
+	/** Sets SavesSyncRequest's target to given CommandReceiver. */
+	void setSyncTarget(GUI::CommandReceiver *target);
 };
 
 /** Shortcut for accessing the connection manager. */
diff --git a/backends/cloud/savessyncrequest.cpp b/backends/cloud/savessyncrequest.cpp
index a99c229925..e066c53a92 100644
--- a/backends/cloud/savessyncrequest.cpp
+++ b/backends/cloud/savessyncrequest.cpp
@@ -24,14 +24,19 @@
 #include "common/config-manager.h"
 #include "common/debug.h"
 #include "common/file.h"
+#include "common/json.h"
 #include "common/savefile.h"
 #include "common/system.h"
-#include <common/json.h>
 
 namespace Cloud {
 
 const char *SavesSyncRequest::TIMESTAMPS_FILENAME = "timestamps";
 
+enum {
+	kSavesSyncProgressCmd = 'SSPR',
+	kSavesSyncEndedCmd = 'SSEN'
+};
+
 SavesSyncRequest::SavesSyncRequest(Storage *storage, Storage::BoolCallback callback, Networking::ErrorCallback ecb):
 	Request(nullptr, ecb), CommandSender(nullptr), _storage(storage), _boolCallback(callback),
 	_workingRequest(nullptr), _ignoreCallback(false) {
@@ -203,10 +208,13 @@ void SavesSyncRequest::directoryCreatedErrorCallback(Networking::ErrorResponse e
 
 void SavesSyncRequest::downloadNextFile() {
 	if (_filesToDownload.empty()) {
+		sendCommand(kSavesSyncEndedCmd, 0);
 		uploadNextFile();
 		return;
 	}
 
+	sendCommand(kSavesSyncProgressCmd, (int)(getProgress() * 100));
+
 	_currentDownloadingFile = _filesToDownload.back();
 	_filesToDownload.pop_back();
 
diff --git a/backends/cloud/storage.cpp b/backends/cloud/storage.cpp
index 19f0845c47..c98310d3dd 100644
--- a/backends/cloud/storage.cpp
+++ b/backends/cloud/storage.cpp
@@ -142,5 +142,19 @@ Common::Array<Common::String> Storage::getSyncingFiles() {
 	return result;
 }
 
+void Storage::cancelSync() {
+	_runningRequestsMutex.lock();
+	if (_savesSyncRequest)
+		_savesSyncRequest->finish();
+	_runningRequestsMutex.unlock();
+}
+
+void Storage::setSyncTarget(GUI::CommandReceiver *target) {
+	_runningRequestsMutex.lock();
+	if (_savesSyncRequest)
+		_savesSyncRequest->setTarget(target);
+	_runningRequestsMutex.unlock();
+}
+
 } // End of namespace Cloud
 
diff --git a/backends/cloud/storage.h b/backends/cloud/storage.h
index 5941fe4a32..40ea14a3a1 100644
--- a/backends/cloud/storage.h
+++ b/backends/cloud/storage.h
@@ -33,6 +33,12 @@
 #include "common/stream.h"
 #include "common/str.h"
 
+namespace GUI {
+
+class CommandReceiver;
+
+}
+
 namespace Cloud {
 
 class SavesSyncRequest;
@@ -146,6 +152,12 @@ public:
 
 	/** Returns an array of saves names which are not yet synced (thus cannot be used). */
 	virtual Common::Array<Common::String> getSyncingFiles();
+
+	/** Cancels running sync. */
+	virtual void cancelSync();
+
+	/** Sets SavesSyncRequest's target to given CommandReceiver. */
+	virtual void setSyncTarget(GUI::CommandReceiver *target);
 };
 
 } // End of namespace Cloud