added files via upload

Tweaks/FLEX/Editing/ArgumentInputViews/FLEXArgumentInputSwitchView.m

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+//
+//  FLEXArgumentInputSwitchView.m
+//  Flipboard
+//
+//  Created by Ryan Olson on 6/16/14.
+//  Copyright (c) 2020 FLEX Team. All rights reserved.
+//
+
+#import "FLEXArgumentInputSwitchView.h"
+
+@interface FLEXArgumentInputSwitchView ()
+
+@property (nonatomic) UISwitch *inputSwitch;
+
+@end
+
+@implementation FLEXArgumentInputSwitchView
+
+- (instancetype)initWithArgumentTypeEncoding:(const char *)typeEncoding {
+    self = [super initWithArgumentTypeEncoding:typeEncoding];
+    if (self) {
+        self.inputSwitch = [UISwitch new];
+        [self.inputSwitch addTarget:self action:@selector(switchValueDidChange:) forControlEvents:UIControlEventValueChanged];
+        [self.inputSwitch sizeToFit];
+        [self addSubview:self.inputSwitch];
+    }
+    return self;
+}
+
+
+#pragma mark Input/Output
+
+- (void)setInputValue:(id)inputValue {
+    BOOL on = NO;
+    if ([inputValue isKindOfClass:[NSNumber class]]) {
+        NSNumber *number = (NSNumber *)inputValue;
+        on = [number boolValue];
+    } else if ([inputValue isKindOfClass:[NSValue class]]) {
+        NSValue *value = (NSValue *)inputValue;
+        if (strcmp([value objCType], @encode(BOOL)) == 0) {
+            [value getValue:&on];
+        }
+    }
+    self.inputSwitch.on = on;
+}
+
+- (id)inputValue {
+    BOOL isOn = [self.inputSwitch isOn];
+    NSValue *boxedBool = [NSValue value:&isOn withObjCType:@encode(BOOL)];
+    return boxedBool;
+}
+
+- (void)switchValueDidChange:(id)sender {
+    [self.delegate argumentInputViewValueDidChange:self];
+}
+
+
+#pragma mark - Layout and Sizing
+
+- (void)layoutSubviews {
+    [super layoutSubviews];
+    
+    self.inputSwitch.frame = CGRectMake(0, self.topInputFieldVerticalLayoutGuide, self.inputSwitch.frame.size.width, self.inputSwitch.frame.size.height);
+}
+
+- (CGSize)sizeThatFits:(CGSize)size {
+    CGSize fitSize = [super sizeThatFits:size];
+    fitSize.height += self.inputSwitch.frame.size.height;
+    return fitSize;
+}
+
+
+#pragma mark - Class Helpers
+
++ (BOOL)supportsObjCType:(const char *)type withCurrentValue:(id)value {
+    NSParameterAssert(type);
+    // Only BOOLs. Current value is irrelevant.
+    return strcmp(type, @encode(BOOL)) == 0;
+}
+
+@end