accounts: import/export

Allow import/export of accounts in the preferences.
PathPasswordWC is a generic modal window asking for a path and a
password. It is used for both export and import UI.

Tuleap: #335
Change-Id: Ic478140e64b51d10672ef466509326fc17be2712
diff --git a/src/PathPasswordWC.h b/src/PathPasswordWC.h
new file mode 100644
index 0000000..667e481
--- /dev/null
+++ b/src/PathPasswordWC.h
@@ -0,0 +1,73 @@
+/*
+ *  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>
+
+@protocol PathPasswordDelegate <NSObject>
+
+@optional
+
+-(void) didCompleteWithPath:(NSURL*) path Password:(NSString*) password;
+-(void) didCompleteWithPath:(NSURL*) path Password:(NSString*) password ActionCode:(NSInteger) requestCode;
+
+@end
+
+@interface PathPasswordWC : NSWindowController
+
+/*
+ * Delegate to inform about completion of the linking process between
+ * a ContactMethod and a Person.
+ */
+@property (nonatomic) id <PathPasswordDelegate> delegate;
+
+/*
+ * caller specific code to identify ongoing action
+ */
+@property (nonatomic) NSInteger actionCode;
+
+/*
+ * Custom init
+ */
+- (id)initWithDelegate:(id <PathPasswordDelegate>) del actionCode:(NSInteger) code;
+
+/**
+ * password string contained in passwordField.
+ * This is a KVO method to bind the text with the OK Button
+ * if password.length is > 0, button is enabled, otherwise disabled
+ */
+@property (retain) NSString* password;
+
+/**
+ * Allow the NSPathControl of this window to select files or not
+ */
+@property (nonatomic) BOOL allowFileSelection;
+
+/*
+ * Show progress during action completion
+ */
+- (void)showLoading;
+
+
+/*
+ * Display error message to the user
+ */
+- (void)showError:(NSString*) error;
+
+
+@end