GUI: Rewrite Cloud tab

- StorageWizardDialog is removed, along with bmps it was using;
- EditTextWidget now accepts custom font in constructor;
- ScrollContainer scrollbar now jumps to top when content height changes
so it's "overscrolled";
- IndexPageHandler now does not awaits for `code` GET-parameter, as
local webserver is no longer used to connect Storages;
- CloudManager and all corresponding Storages are updated to support
disconnecting and to notify about successful connection.

2 files changed, 13 insertions, 3 deletions

diff --git a/backends/cloud/googledrive/googledrivestorage.cpp b/backends/cloud/googledrive/googledrivestorage.cpp
index 67d157748a..a6e17e6ad3 100644
--- a/backends/cloud/googledrive/googledrivestorage.cpp
+++ b/backends/cloud/googledrive/googledrivestorage.cpp
@@ -46,8 +46,8 @@ namespace GoogleDrive {
 GoogleDriveStorage::GoogleDriveStorage(Common::String token, Common::String refreshToken):
 	IdStorage(token, refreshToken) {}
 
-GoogleDriveStorage::GoogleDriveStorage(Common::String code) {
-	getAccessToken(code);
+GoogleDriveStorage::GoogleDriveStorage(Common::String code, Networking::ErrorCallback cb) {
+	getAccessToken(code, cb);
 }
 
 GoogleDriveStorage::~GoogleDriveStorage() {}
@@ -231,6 +231,11 @@ GoogleDriveStorage *GoogleDriveStorage::loadFromConfig(Common::String keyPrefix)
 	return new GoogleDriveStorage(accessToken, refreshToken);
 }
 
+void GoogleDriveStorage::removeFromConfig(Common::String keyPrefix) {
+	ConfMan.removeKey(keyPrefix + "access_token", ConfMan.kCloudDomain);
+	ConfMan.removeKey(keyPrefix + "refresh_token", ConfMan.kCloudDomain);
+}
+
 Common::String GoogleDriveStorage::getRootDirectoryId() {
 	return "root";
 }
diff --git a/backends/cloud/googledrive/googledrivestorage.h b/backends/cloud/googledrive/googledrivestorage.h
index 21e027c4a7..db47e7cd3c 100644
--- a/backends/cloud/googledrive/googledrivestorage.h
+++ b/backends/cloud/googledrive/googledrivestorage.h
@@ -58,7 +58,7 @@ protected:
 
 public:
 	/** This constructor uses OAuth code flow to get tokens. */
-	GoogleDriveStorage(Common::String code);
+	GoogleDriveStorage(Common::String code, Networking::ErrorCallback cb);
 	virtual ~GoogleDriveStorage();
 
 	/**
@@ -106,6 +106,11 @@ public:
 	 */
 	static GoogleDriveStorage *loadFromConfig(Common::String keyPrefix);
 
+	/**
+	 * Remove all GoogleDriveStorage-related data from config.
+	 */
+	static void removeFromConfig(Common::String keyPrefix);
+
 	virtual Common::String getRootDirectoryId();
 
 	Common::String accessToken() const { return _token; }