Welcome window now displays a list of recent documents.

also the window now gets closed when a document is loaded

MacPass/MPWelcomeViewController.m

@@ -0,0 +1,50 @@
+//
+//  MPWelcomeWindowViewController.m
+//  MacPass
+//
+//  Created by Michael Starke on 28.09.18.
+//  Copyright © 2018 HicknHack Software GmbH. All rights reserved.
+//
+
+#import "MPWelcomeViewController.h"
+
+@interface MPWelcomeViewController ()
+
+@property (strong) IBOutlet NSTableView *tableView;
+
+@end
+
+@implementation MPWelcomeViewController
+
+- (NSNibName)nibName {
+  return @"WelcomeView";
+}
+
+- (void)viewWillAppear {
+  [super viewWillAppear];
+  [self.tableView reloadData];
+}
+
+- (NSInteger)numberOfRowsInTableView:(NSTableView *)tableView {
+  return NSDocumentController.sharedDocumentController.recentDocumentURLs.count;
+}
+
+- (nullable NSView *)tableView:(NSTableView *)tableView viewForTableColumn:(nullable NSTableColumn *)tableColumn row:(NSInteger)row {
+  NSTableCellView *view = [tableView makeViewWithIdentifier:tableColumn.identifier owner:self];
+  NSURL *url = NSDocumentController.sharedDocumentController.recentDocumentURLs[row];
+  view.textField.stringValue = url.lastPathComponent;
+  view.imageView.image = [NSWorkspace.sharedWorkspace iconForFile:url.path];
+  return view;
+}
+
+- (IBAction)openRecentURL:(id)sender {
+  NSInteger clicked = self.tableView.clickedRow;
+  NSArray <NSURL *> *recentURLS = NSDocumentController.sharedDocumentController.recentDocumentURLs;
+  if(clicked > 0 && clicked < recentURLS.count) {
+    [NSDocumentController.sharedDocumentController openDocumentWithContentsOfURL:recentURLS[clicked]
+                                                                         display:YES
+                                                               completionHandler:^(NSDocument * _Nullable document, BOOL documentWasAlreadyOpen, NSError * _Nullable error) {}];
+  }
+}
+
+@end