added files via upload

Tweaks/FLEX/Editing/FLEXVariableEditorViewController.m

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+//
+//  FLEXVariableEditorViewController.m
+//  Flipboard
+//
+//  Created by Ryan Olson on 5/16/14.
+//  Copyright (c) 2020 FLEX Team. All rights reserved.
+//
+
+#import "FLEXColor.h"
+#import "FLEXVariableEditorViewController.h"
+#import "FLEXFieldEditorView.h"
+#import "FLEXRuntimeUtility.h"
+#import "FLEXUtility.h"
+#import "FLEXObjectExplorerFactory.h"
+#import "FLEXArgumentInputView.h"
+#import "FLEXArgumentInputViewFactory.h"
+#import "FLEXObjectExplorerViewController.h"
+#import "UIBarButtonItem+FLEX.h"
+
+@interface FLEXVariableEditorViewController () <UIScrollViewDelegate>
+@property (nonatomic) UIScrollView *scrollView;
+@end
+
+@implementation FLEXVariableEditorViewController
+
+#pragma mark - Initialization
+
++ (instancetype)target:(id)target data:(nullable id)data commitHandler:(void(^_Nullable)(void))onCommit {
+    return [[self alloc] initWithTarget:target data:data commitHandler:onCommit];
+}
+
+- (id)initWithTarget:(id)target data:(nullable id)data commitHandler:(void(^_Nullable)(void))onCommit {
+    self = [super init];
+    if (self) {
+        _target = target;
+        _data = data;
+        _commitHandler = onCommit;
+        [NSNotificationCenter.defaultCenter
+            addObserver:self selector:@selector(keyboardDidShow:)
+            name:UIKeyboardDidShowNotification object:nil
+        ];
+        [NSNotificationCenter.defaultCenter
+            addObserver:self selector:@selector(keyboardWillHide:)
+            name:UIKeyboardWillHideNotification object:nil
+        ];
+    }
+    
+    return self;
+}
+
+- (void)dealloc {
+    [NSNotificationCenter.defaultCenter removeObserver:self];
+}
+
+#pragma mark - UIViewController methods
+
+- (void)keyboardDidShow:(NSNotification *)notification {
+    CGRect keyboardRectInWindow = [[[notification userInfo] objectForKey:UIKeyboardFrameEndUserInfoKey] CGRectValue];
+    CGSize keyboardSize = [self.view convertRect:keyboardRectInWindow fromView:nil].size;
+    UIEdgeInsets scrollInsets = self.scrollView.contentInset;
+    scrollInsets.bottom = keyboardSize.height;
+    self.scrollView.contentInset = scrollInsets;
+    self.scrollView.scrollIndicatorInsets = scrollInsets;
+    
+    // Find the active input view and scroll to make sure it's visible.
+    for (FLEXArgumentInputView *argumentInputView in self.fieldEditorView.argumentInputViews) {
+        if (argumentInputView.inputViewIsFirstResponder) {
+            CGRect scrollToVisibleRect = [self.scrollView convertRect:argumentInputView.bounds fromView:argumentInputView];
+            [self.scrollView scrollRectToVisible:scrollToVisibleRect animated:YES];
+            break;
+        }
+    }
+}
+
+- (void)keyboardWillHide:(NSNotification *)notification {
+    UIEdgeInsets scrollInsets = self.scrollView.contentInset;
+    scrollInsets.bottom = 0.0;
+    self.scrollView.contentInset = scrollInsets;
+    self.scrollView.scrollIndicatorInsets = scrollInsets;
+}
+
+- (void)viewDidLoad {
+    [super viewDidLoad];
+    
+    self.view.backgroundColor = FLEXColor.scrollViewBackgroundColor;
+    
+    self.scrollView = [[UIScrollView alloc] initWithFrame:self.view.bounds];
+    self.scrollView.backgroundColor = self.view.backgroundColor;
+    self.scrollView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
+    self.scrollView.delegate = self;
+    [self.view addSubview:self.scrollView];
+    
+    _fieldEditorView = [FLEXFieldEditorView new];
+    self.fieldEditorView.targetDescription = [NSString stringWithFormat:@"%@ %p", [self.target class], self.target];
+    [self.scrollView addSubview:self.fieldEditorView];
+    
+    _actionButton = [[UIBarButtonItem alloc]
+        initWithTitle:@"Set"
+        style:UIBarButtonItemStyleDone
+        target:self
+        action:@selector(actionButtonPressed:)
+    ];
+    
+    self.navigationController.toolbarHidden = NO;
+    self.toolbarItems = @[UIBarButtonItem.flex_flexibleSpace, self.actionButton];
+}
+
+- (void)viewWillLayoutSubviews {
+    CGSize constrainSize = CGSizeMake(self.scrollView.bounds.size.width, CGFLOAT_MAX);
+    CGSize fieldEditorSize = [self.fieldEditorView sizeThatFits:constrainSize];
+    self.fieldEditorView.frame = CGRectMake(0, 0, fieldEditorSize.width, fieldEditorSize.height);
+    self.scrollView.contentSize = fieldEditorSize;
+}
+
+#pragma mark - Public
+
+- (FLEXArgumentInputView *)firstInputView {
+    return [self.fieldEditorView argumentInputViews].firstObject;
+}
+
+- (void)actionButtonPressed:(id)sender {
+    // Subclasses can override
+    [self.fieldEditorView endEditing:YES];
+    if (_commitHandler) {
+        _commitHandler();
+    }
+}
+
+- (void)exploreObjectOrPopViewController:(id)objectOrNil {
+    if (objectOrNil) {
+        // For non-nil (or void) return types, push an explorer view controller to display the object
+        FLEXObjectExplorerViewController *explorerViewController = [FLEXObjectExplorerFactory explorerViewControllerForObject:objectOrNil];
+        [self.navigationController pushViewController:explorerViewController animated:YES];
+    } else {
+        // If we didn't get a returned object but the method call succeeded,
+        // pop this view controller off the stack to indicate that the call went through.
+        [self.navigationController popViewControllerAnimated:YES];
+    }
+}
+
+@end