multi-device: add account migration

Prompt user to add a password for each of his Ring accounts in order to
use the new multi-device system.

Change-Id: I7a75b04330eabc3d229f8fd613cad69ed8d66eb5
Tuleap: #960
diff --git a/src/MigrateRingAccountsWC.h b/src/MigrateRingAccountsWC.h
new file mode 100644
index 0000000..31db7a8
--- /dev/null
+++ b/src/MigrateRingAccountsWC.h
@@ -0,0 +1,62 @@
+/*
+ *  Copyright (C) 2016 Savoir-faire Linux Inc.
+ *  Author: Alexandre Lision <alexandre.lision@savoirfairelinux.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.
+ */
+
+#import <Cocoa/Cocoa.h>
+
+//LRC
+#import <account.h>
+
+//RING
+#import "LoadingWCProtocol.h"
+#import "LoadingWCDelegate.h"
+#import "AbstractLoadingWC.h"
+
+@protocol MigrateRingAccountsDelegate <LoadingWCDelegate>
+
+-(void) migrationDidCompleteWithError;
+-(void) migrationDidComplete;
+
+@end
+
+@interface MigrateRingAccountsWC : AbstractLoadingWC <LoadingWCProtocol>
+
+/**
+ * password string contained in passwordField.
+ */
+@property (retain) NSString* password;
+
+/**
+ * passwordConfirmation string contained in passwordConfirmationField.
+ */
+@property (retain) NSString* passwordConfirmation;
+
+/**
+ * computed properties calculated by password string contained in
+ * passwordField and passwordCOnfirmation string contained
+ * inpasswordConfirmationField
+ * This is a KVO method to bind the text with the OK Button
+ * if password.length is > 0 AND passwordConfirmation.length > 0
+ * AND password isEqualsToString passwordCOnfirmationbutton is enabled,
+ * otherwise disabled
+ */
+@property (readonly) BOOL validatePasswords;
+
+@property Account* account;
+
+@end