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, 12 insertions, 3 deletions

diff --git a/backends/cloud/dropbox/dropboxstorage.cpp b/backends/cloud/dropbox/dropboxstorage.cpp
index c12dec9968..5d8b9e0425 100644
--- a/backends/cloud/dropbox/dropboxstorage.cpp
+++ b/backends/cloud/dropbox/dropboxstorage.cpp
@@ -42,8 +42,8 @@ namespace Dropbox {
 
 DropboxStorage::DropboxStorage(Common::String accessToken, bool unused): BaseStorage(accessToken, "") {}
 
-DropboxStorage::DropboxStorage(Common::String code): BaseStorage() {
-	getAccessToken(code);
+DropboxStorage::DropboxStorage(Common::String code, Networking::ErrorCallback cb): BaseStorage() {
+	getAccessToken(code, cb);
 }
 
 DropboxStorage::~DropboxStorage() {}
@@ -112,5 +112,9 @@ DropboxStorage *DropboxStorage::loadFromConfig(Common::String keyPrefix) {
 	return new DropboxStorage(accessToken, true);
 }
 
+void DropboxStorage::removeFromConfig(Common::String keyPrefix) {
+	ConfMan.removeKey(keyPrefix + "access_token", ConfMan.kCloudDomain);
+}
+
 } // End of namespace Dropbox
 } // End of namespace Cloud
diff --git a/backends/cloud/dropbox/dropboxstorage.h b/backends/cloud/dropbox/dropboxstorage.h
index bca83d2b5a..0b76bb5c4a 100644
--- a/backends/cloud/dropbox/dropboxstorage.h
+++ b/backends/cloud/dropbox/dropboxstorage.h
@@ -51,7 +51,7 @@ protected:
 
 public:
 	/** This constructor uses OAuth code flow to get tokens. */
-	DropboxStorage(Common::String code);
+	DropboxStorage(Common::String code, Networking::ErrorCallback cb);
 	virtual ~DropboxStorage();
 
 	/**
@@ -98,6 +98,11 @@ public:
 	 * @return pointer to the newly created DropboxStorage or 0 if some problem occured.
 	 */
 	static DropboxStorage *loadFromConfig(Common::String keyPrefix);
+
+	/**
+	 * Remove all DropboxStorage-related data from config.
+	 */
+	static void removeFromConfig(Common::String keyPrefix);
 };
 
 } // End of namespace Dropbox