Basic saving done (save on every LSK entry, no saving on empty CO RTE -> (TODO: possibly more dynamic for more than one leading whitespace, delete leading whitespace))

FMC Planner 2/Menu.plist

@@ -2,13 +2,13 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <array>
-	<string>Departure</string>
-	<string>Arrival</string>
-	<string>Aircraft</string>
-	<string></string>
+	<string>DEPARTURE</string>
+	<string>ARRIVAL</string>
+	<string>AIRCRAFT</string>
 	<string></string>
 	<string></string>
 	<string></string>
+	<string>CO RTE</string>
 	<string></string>
 	<string></string>
 	<string></string>

FMC Planner 2/ViewController.h

@@ -15,9 +15,13 @@
 
 @property(strong, nonatomic) ViewControllerScreen *screen;
 @property(strong, nonatomic) ViewControllerKeyboard *keys;
+@property(strong, nonatomic) NSMutableDictionary *save;
 
 @property(strong, nonatomic) IBOutlet UIView *backdropKeys;
 
 @property(strong, nonatomic) IBOutlet UIView *backdropScreen;
 
+- (void)loadSave:(NSString *)file;
+- (void)saveToFile:(NSDictionary *)save;
+
 @end

FMC Planner 2/ViewController.m

@@ -18,6 +18,8 @@
     _backdropKeys.layer.masksToBounds = YES;
     _backdropScreen.layer.cornerRadius = 5;
     _backdropScreen.layer.masksToBounds = YES;
+    // Setup save system
+    _save = [[NSMutableDictionary alloc] init];
 }
 
 - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
@@ -32,4 +34,22 @@
     }
 }
 
+#warning TODO: check if file already exists -- load or replace
+#warning TODO: else -> jump to file browsing for load/delete
+- (void)saveToFile:(NSDictionary *)save {
+    if (!([_save valueForKey:@"MENU@LSKR1"] == nil ||
+          [[_save valueForKey:@"MENU@LSKR1"] isEqualToString:@""])) {
+        NSArray *paths = NSSearchPathForDirectoriesInDomains(
+            NSDocumentDirectory, NSUserDomainMask, YES);
+        NSString *documentsPath = [paths objectAtIndex:0];
+        [_save writeToFile:[documentsPath
+                               stringByAppendingString:
+                                   [NSString
+                                       stringWithFormat:
+                                           @"/%@",
+                                           [_save valueForKey:@"MENU@LSKR1"]]]
+                atomically:YES];
+    }
+}
+
 @end

FMC Planner 2/ViewControllerKeyboard.m

@@ -6,8 +6,8 @@
 //  Copyright © 2016 Kilian Hofmann. All rights reserved.
 //
 
-#import "ViewController.h"
 #import "ViewControllerKeyboard.h"
+#import "ViewController.h"
 
 @implementation ViewControllerKeyboard
 

FMC Planner 2/ViewControllerScreen.h

@@ -7,6 +7,7 @@
 //
 
 #import "SharedDeclerations.h"
+#import "ViewController.h"
 #import <UIKit/UIKit.h>
 
 @class ViewController;
@@ -26,5 +27,6 @@
 @property(strong, nonatomic) IBOutlet NSLayoutConstraint *FrameHeight;
 
 - (void)loadScreen:(NSString *)screenName withOptions:(NSArray *)options;
+- (void)loadDataToScreen;
 
 @end

FMC Planner 2/ViewControllerScreen.m

@@ -6,6 +6,7 @@
 //  Copyright © 2016 Kilian Hofmann. All rights reserved.
 //
 
+#import "ViewController.h"
 #import "ViewControllerScreen.h"
 
 @implementation ViewControllerScreen
@@ -65,8 +66,6 @@
     for (UILabel *label in _LSK) {
         label.text = @"";
     }
-    _Scratchpad.text = @"";
-    _Header.text = @"";
 }
 
 - (void)enterLSK:(UITapGestureRecognizer *)tapReg {
@@ -76,8 +75,8 @@
         ((UILabel *)tapReg.view).text = _Scratchpad.text;
     }
     if ([((UILabel *)tapReg.view)
-                .restorationIdentifier
-            isEqualToString:@"LSKR6"] &&_numRoutePage = _maxNumRoutePages) {
+                .restorationIdentifier isEqualToString:@"LSKR6"] &&
+        _numRoutePage == _maxNumRoutePages) {
         _maxNumRoutePages += 1;
         NSRange indexSlash = [_Header.text rangeOfString:@"/"];
         _Header.text = [_Header.text
@@ -91,6 +90,12 @@
                                                        _maxNumRoutePages]];
     }
     _Scratchpad.text = @"";
+    [_main.save
+        setObject:((UILabel *)tapReg.view).text
+           forKey:[NSString stringWithFormat:@"%@@%@", _Header.text,
+                                             ((UILabel *)tapReg.view)
+                                                 .restorationIdentifier]];
+    [_main saveToFile:_main.save];
 }
 
 - (void)loadScreen:(NSString *)screenName withOptions:(NSArray *)options {
@@ -120,6 +125,24 @@
                                                          _numRoutePage,
                                                          _maxNumRoutePages]];
     }
+    [self loadDataToScreen];
+}
+
+- (void)loadDataToScreen {
+    for (NSString *ident in _main.save) {
+        NSRange range = [ident rangeOfString:@"@"];
+        if ([[ident substringToIndex:range.location]
+                isEqualToString:_Header.text]) {
+            for (UILabel *label in _LSK) {
+                if ([label.restorationIdentifier
+                        isEqualToString:[ident
+                                            substringFromIndex:range.location +
+                                                               1]]) {
+                    label.text = [_main.save valueForKey:ident];
+                }
+            }
+        }
+    }
 }
 
 @end