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!

7 files changed, 154 insertions, 3 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
diff --git a/gui/saveload-dialog.cpp b/gui/saveload-dialog.cpp
index d9713505e6..e5e71a73b8 100644
--- a/gui/saveload-dialog.cpp
+++ b/gui/saveload-dialog.cpp
@@ -38,6 +38,53 @@
 
 namespace GUI {
 
+enum {
+	kSavesSyncProgressCmd = 'SSPR',
+	kSavesSyncEndedCmd = 'SSEN',
+
+	kCancelSyncCmd = 'PDCS',
+	kBackgroundSyncCmd = 'PDBS'
+};
+
+SaveLoadCloudSyncProgressDialog::SaveLoadCloudSyncProgressDialog(): Dialog(10, 10, 320, 100) {
+	int x = 10;
+	int buttonHeight = 24;
+	int buttonWidth = 140;
+	int marginBottom = 8;
+	
+	uint32 progress = (uint32)(100 * CloudMan.getSyncProgress());
+	_label = new StaticTextWidget(this, 10, 10, 300, kLineHeight, Common::String::format("Downloading saves (%u%% complete)...", progress), Graphics::kTextAlignCenter);
+
+	//if (defaultButton)
+		new ButtonWidget(this, x, _h - buttonHeight - marginBottom, buttonWidth, buttonHeight, "Cancel", 0, kCancelSyncCmd, Common::ASCII_ESCAPE);	// Cancel dialog
+
+	//if (altButton)
+		new ButtonWidget(this, x + buttonWidth + 10, _h - buttonHeight - 8, buttonWidth, buttonHeight, "Run in background", 0, kBackgroundSyncCmd, Common::ASCII_RETURN);	// Confirm dialog
+}
+
+SaveLoadCloudSyncProgressDialog::~SaveLoadCloudSyncProgressDialog() {}
+
+void SaveLoadCloudSyncProgressDialog::handleCommand(CommandSender *sender, uint32 cmd, uint32 data) {
+	switch(cmd) {
+	case kSavesSyncProgressCmd:				
+		_label->setLabel(Common::String::format("Downloading saves (%u%% complete)...", data));
+		break;
+
+	case kCancelSyncCmd:
+		setResult(kCancelSyncCmd);
+		close();
+		break;
+
+	case kSavesSyncEndedCmd:
+	case kBackgroundSyncCmd:
+		setResult(kBackgroundSyncCmd);
+		close();
+		break;
+	}
+
+	Dialog::handleCommand(sender, cmd, data);
+}
+
 #ifndef DISABLE_SAVELOADCHOOSER_GRID
 SaveLoadChooserType getRequestedSaveLoadDialog(const MetaEngine &metaEngine) {
 	const Common::String &userConfig = ConfMan.get("gui_saveload_chooser", Common::ConfigManager::kApplicationDomain);
@@ -71,7 +118,8 @@ enum {
 
 SaveLoadChooserDialog::SaveLoadChooserDialog(const Common::String &dialogName, const bool saveMode)
 	: Dialog(dialogName), _metaEngine(0), _delSupport(false), _metaInfoSupport(false),
-	_thumbnailSupport(false), _saveDateSupport(false), _playTimeSupport(false), _saveMode(saveMode)
+	_thumbnailSupport(false), _saveDateSupport(false), _playTimeSupport(false), _saveMode(saveMode),
+	_dialogWasShown(false)
 #ifndef DISABLE_SAVELOADCHOOSER_GRID
 	, _listButton(0), _gridButton(0)
 #endif // !DISABLE_SAVELOADCHOOSER_GRID
@@ -83,7 +131,8 @@ SaveLoadChooserDialog::SaveLoadChooserDialog(const Common::String &dialogName, c
 
 SaveLoadChooserDialog::SaveLoadChooserDialog(int x, int y, int w, int h, const bool saveMode)
 	: Dialog(x, y, w, h), _metaEngine(0), _delSupport(false), _metaInfoSupport(false),
-	_thumbnailSupport(false), _saveDateSupport(false), _playTimeSupport(false), _saveMode(saveMode)
+	_thumbnailSupport(false), _saveDateSupport(false), _playTimeSupport(false), _saveMode(saveMode),
+	_dialogWasShown(false)
 #ifndef DISABLE_SAVELOADCHOOSER_GRID
 	, _listButton(0), _gridButton(0)
 #endif // !DISABLE_SAVELOADCHOOSER_GRID
@@ -99,6 +148,8 @@ void SaveLoadChooserDialog::open() {
 	// So that quitting ScummVM will not cause the dialog result to say a
 	// saved game was selected.
 	setResult(-1);
+
+	_dialogWasShown = false;
 }
 
 int SaveLoadChooserDialog::run(const Common::String &target, const MetaEngine *metaEngine) {
@@ -137,6 +188,21 @@ void SaveLoadChooserDialog::handleCommand(CommandSender *sender, uint32 cmd, uin
 	}
 #endif // !DISABLE_SAVELOADCHOOSER_GRID
 
+	if (cmd == kSavesSyncProgressCmd || cmd == kSavesSyncEndedCmd) {
+		Cloud::SavesSyncRequest *request = (Cloud::SavesSyncRequest *)sender;
+
+		//this dialog only gets these commands if the progress dialog was shown and user clicked "run in background"
+		switch (cmd) {
+		case kSavesSyncProgressCmd:			
+			//TODO: unlock that save which was downloaded
+			break;
+
+		case kSavesSyncEndedCmd:
+			//TODO: ?
+			break;
+		}
+	}
+
 	return Dialog::handleCommand(sender, cmd, data);
 }
 
@@ -151,6 +217,23 @@ void SaveLoadChooserDialog::runSaveSync(bool hasSavepathOverride) {
 	}
 }
 
+void SaveLoadChooserDialog::handleTickle() {
+	if (!_dialogWasShown && CloudMan.isSyncing()) {
+		Common::Array<Common::String> files = CloudMan.getSyncingFiles();
+		if (!files.empty()) {
+			SaveLoadCloudSyncProgressDialog dialog;
+			CloudMan.setSyncTarget(&dialog);
+			int result = dialog.runModal();
+			if (result == kCancelSyncCmd) {
+				CloudMan.cancelSync();
+			}
+			CloudMan.setSyncTarget(this);
+			_dialogWasShown = true;
+		}
+	}
+	Dialog::handleTickle();
+}
+
 void SaveLoadChooserDialog::reflowLayout() {
 #ifndef DISABLE_SAVELOADCHOOSER_GRID
 	addChooserButtons();
diff --git a/gui/saveload-dialog.h b/gui/saveload-dialog.h
index 0e67ba89fe..ffb8f34458 100644
--- a/gui/saveload-dialog.h
+++ b/gui/saveload-dialog.h
@@ -30,6 +30,15 @@
 
 namespace GUI {
 
+class SaveLoadCloudSyncProgressDialog : public Dialog { //protected?
+	StaticTextWidget *_label;
+public:
+	SaveLoadCloudSyncProgressDialog();
+	virtual ~SaveLoadCloudSyncProgressDialog();
+
+	virtual void handleCommand(CommandSender *sender, uint32 cmd, uint32 data);
+};
+
 #define kSwitchSaveLoadDialog -2
 
 // TODO: We might want to disable the grid based save/load chooser for more
@@ -61,6 +70,8 @@ public:
 	virtual void handleCommand(CommandSender *sender, uint32 cmd, uint32 data);
 
 	virtual void runSaveSync(bool hasSavepathOverride);
+	
+	virtual void handleTickle();
 
 #ifndef DISABLE_SAVELOADCHOOSER_GRID
 	virtual SaveLoadChooserType getType() const = 0;
@@ -80,6 +91,7 @@ protected:
 	bool					_saveDateSupport;
 	bool					_playTimeSupport;
 	Common::String			_target;
+	bool _dialogWasShown;
 
 #ifndef DISABLE_SAVELOADCHOOSER_GRID
 	ButtonWidget *_listButton;