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/box/boxstorage.cpp b/backends/cloud/box/boxstorage.cpp
index f76fa3ac23..13046a08e0 100644
--- a/backends/cloud/box/boxstorage.cpp
+++ b/backends/cloud/box/boxstorage.cpp
@@ -45,8 +45,8 @@ namespace Box {
 BoxStorage::BoxStorage(Common::String token, Common::String refreshToken):
 	IdStorage(token, refreshToken) {}
 
-BoxStorage::BoxStorage(Common::String code) {
-	getAccessToken(code);
+BoxStorage::BoxStorage(Common::String code, Networking::ErrorCallback cb) {
+	getAccessToken(code, cb);
 }
 
 BoxStorage::~BoxStorage() {}
@@ -227,6 +227,11 @@ BoxStorage *BoxStorage::loadFromConfig(Common::String keyPrefix) {
 	return new BoxStorage(accessToken, refreshToken);
 }
 
+void BoxStorage::removeFromConfig(Common::String keyPrefix) {
+	ConfMan.removeKey(keyPrefix + "access_token", ConfMan.kCloudDomain);
+	ConfMan.removeKey(keyPrefix + "refresh_token", ConfMan.kCloudDomain);
+}
+
 Common::String BoxStorage::getRootDirectoryId() {
 	return "0";
 }
diff --git a/backends/cloud/box/boxstorage.h b/backends/cloud/box/boxstorage.h
index a8fd32c404..ce77192bfa 100644
--- a/backends/cloud/box/boxstorage.h
+++ b/backends/cloud/box/boxstorage.h
@@ -55,7 +55,7 @@ protected:
 
 public:
 	/** This constructor uses OAuth code flow to get tokens. */
-	BoxStorage(Common::String code);
+	BoxStorage(Common::String code, Networking::ErrorCallback cb);
 	virtual ~BoxStorage();
 
 	/**
@@ -104,6 +104,11 @@ public:
 	 */
 	static BoxStorage *loadFromConfig(Common::String keyPrefix);
 
+	/**
+	 * Remove all BoxStorage-related data from config.
+	 */
+	static void removeFromConfig(Common::String keyPrefix);
+
 	virtual Common::String getRootDirectoryId();
 
 	Common::String accessToken() const { return _token; }