added files via upload

Tweaks/FLEX/Editing/FLEXFieldEditorViewController.m

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+//
+//  FLEXFieldEditorViewController.m
+//  FLEX
+//
+//  Created by Tanner on 11/22/18.
+//  Copyright © 2020 FLEX Team. All rights reserved.
+//
+
+#import "FLEXFieldEditorViewController.h"
+#import "FLEXFieldEditorView.h"
+#import "FLEXArgumentInputViewFactory.h"
+#import "FLEXPropertyAttributes.h"
+#import "FLEXRuntimeUtility.h"
+#import "FLEXUtility.h"
+#import "FLEXColor.h"
+#import "UIBarButtonItem+FLEX.h"
+
+@interface FLEXFieldEditorViewController () <FLEXArgumentInputViewDelegate>
+
+@property (nonatomic) FLEXProperty *property;
+@property (nonatomic) FLEXIvar *ivar;
+
+@property (nonatomic, readonly) id currentValue;
+@property (nonatomic, readonly) const FLEXTypeEncoding *typeEncoding;
+@property (nonatomic, readonly) NSString *fieldDescription;
+
+@end
+
+@implementation FLEXFieldEditorViewController
+
+#pragma mark - Initialization
+
++ (instancetype)target:(id)target property:(nonnull FLEXProperty *)property commitHandler:(void(^_Nullable)(void))onCommit {
+    FLEXFieldEditorViewController *editor = [self target:target data:property commitHandler:onCommit];
+    editor.title = [@"Property: " stringByAppendingString:property.name];
+    editor.property = property;
+    return editor;
+}
+
++ (instancetype)target:(id)target ivar:(nonnull FLEXIvar *)ivar commitHandler:(void(^_Nullable)(void))onCommit {
+    FLEXFieldEditorViewController *editor = [self target:target data:ivar commitHandler:onCommit];
+    editor.title = [@"Ivar: " stringByAppendingString:ivar.name];
+    editor.ivar = ivar;
+    return editor;
+}
+
+#pragma mark - Overrides
+
+- (void)viewDidLoad {
+    [super viewDidLoad];
+
+    self.view.backgroundColor = FLEXColor.groupedBackgroundColor;
+
+    // Create getter button
+    _getterButton = [[UIBarButtonItem alloc]
+        initWithTitle:@"Get"
+        style:UIBarButtonItemStyleDone
+        target:self
+        action:@selector(getterButtonPressed:)
+    ];
+    self.toolbarItems = @[
+        UIBarButtonItem.flex_flexibleSpace, self.getterButton, self.actionButton
+    ];
+
+    // Configure input view
+    self.fieldEditorView.fieldDescription = self.fieldDescription;
+    FLEXArgumentInputView *inputView = [FLEXArgumentInputViewFactory argumentInputViewForTypeEncoding:self.typeEncoding];
+    inputView.inputValue = self.currentValue;
+    inputView.delegate = self;
+    self.fieldEditorView.argumentInputViews = @[inputView];
+
+    // Don't show a "set" button for switches; we mutate when the switch is flipped
+    if ([inputView isKindOfClass:[FLEXArgumentInputSwitchView class]]) {
+        self.actionButton.enabled = NO;
+        self.actionButton.title = @"Flip the switch to call the setter";
+        // Put getter button before setter button 
+        self.toolbarItems = @[
+            UIBarButtonItem.flex_flexibleSpace, self.actionButton, self.getterButton
+        ];
+    }
+}
+
+- (void)actionButtonPressed:(id)sender {
+    if (self.property) {
+        id userInputObject = self.firstInputView.inputValue;
+        NSArray *arguments = userInputObject ? @[userInputObject] : nil;
+        SEL setterSelector = self.property.likelySetter;
+        NSError *error = nil;
+        [FLEXRuntimeUtility performSelector:setterSelector onObject:self.target withArguments:arguments error:&error];
+        if (error) {
+            [FLEXAlert showAlert:@"Property Setter Failed" message:error.localizedDescription from:self];
+            sender = nil; // Don't pop back
+        }
+    } else {
+        // TODO: check mutability and use mutableCopy if necessary;
+        // this currently could and would assign NSArray to NSMutableArray
+        [self.ivar setValue:self.firstInputView.inputValue onObject:self.target];
+    }
+    
+    // Dismiss keyboard and handle committed changes
+    [super actionButtonPressed:sender];
+
+    // Go back after setting, but not for switches.
+    if (sender) {
+        [self.navigationController popViewControllerAnimated:YES];
+    } else {
+        self.firstInputView.inputValue = self.currentValue;
+    }
+}
+
+- (void)getterButtonPressed:(id)sender {
+    [self.fieldEditorView endEditing:YES];
+
+    [self exploreObjectOrPopViewController:self.currentValue];
+}
+
+- (void)argumentInputViewValueDidChange:(FLEXArgumentInputView *)argumentInputView {
+    if ([argumentInputView isKindOfClass:[FLEXArgumentInputSwitchView class]]) {
+        [self actionButtonPressed:nil];
+    }
+}
+
+#pragma mark - Private
+
+- (id)currentValue {
+    if (self.property) {
+        return [self.property getValue:self.target];
+    } else {
+        return [self.ivar getValue:self.target];
+    }
+}
+
+- (const FLEXTypeEncoding *)typeEncoding {
+    if (self.property) {
+        return self.property.attributes.typeEncoding.UTF8String;
+    } else {
+        return self.ivar.typeEncoding.UTF8String;
+    }
+}
+
+- (NSString *)fieldDescription {
+    if (self.property) {
+        return self.property.fullDescription;
+    } else {
+        return self.ivar.description;
+    }
+}
+
+@end