FLEX/Classes/ObjectExplorers/Sections/Shortcuts/FLEXShortcut.m

//
//  FLEXShortcut.m
//  FLEX
//
//  Created by Tanner Bennett on 12/10/19.
//  Copyright © 2019 Flipboard. All rights reserved.
//

#import "FLEXShortcut.h"
#import "FLEXProperty.h"
#import "FLEXPropertyAttributes.h"
#import "FLEXIvar.h"
#import "FLEXMethod.h"
#import "FLEXRuntime+UIKitHelpers.h"
#import "FLEXObjectExplorerFactory.h"
#import "FLEXFieldEditorViewController.h"
#import "FLEXMethodCallingViewController.h"
#import "FLEXMetadataSection.h"

@interface FLEXShortcut () {
    id _item;
}

@property (nonatomic, readonly) FLEXMetadataKind metadataKind;
@property (nonatomic, readonly) FLEXProperty *property;
@property (nonatomic, readonly) FLEXMethod *method;
@property (nonatomic, readonly) FLEXIvar *ivar;
@property (nonatomic, readonly) id<FLEXRuntimeMetadata> metadata;
@end

@implementation FLEXShortcut

+ (id<FLEXShortcut>)shortcutFor:(id)item {
    if ([item conformsToProtocol:@protocol(FLEXShortcut)]) {
        return item;
    }
    
    FLEXShortcut *shortcut = [self new];
    shortcut->_item = item;

    if ([item isKindOfClass:[FLEXProperty class]]) {
        if (shortcut.property.isClassProperty) {
            shortcut->_metadataKind =  FLEXMetadataKindClassProperties;
        } else {
            shortcut->_metadataKind =  FLEXMetadataKindProperties;
        }
    }
    if ([item isKindOfClass:[FLEXIvar class]]) {
        shortcut->_metadataKind = FLEXMetadataKindIvars;
    }
    if ([item isKindOfClass:[FLEXMethod class]]) {
        // We don't care if it's a class method or not
        shortcut->_metadataKind = FLEXMetadataKindMethods;
    }

    return shortcut;
}

- (id)propertyOrIvarValue:(id)object {
    return [self.metadata currentValueWithTarget:object];
}

- (NSString *)titleWith:(id)object {
    switch (self.metadataKind) {
        case FLEXMetadataKindClassProperties:
        case FLEXMetadataKindProperties:
            // Since we're outside of the "properties" section, prepend @property for clarity.
            return [@"@property " stringByAppendingString:[_item description]];

        default:
            return [_item description];
    }

    NSAssert(
        [_item isKindOfClass:[NSString class]],
        @"Unexpected type: %@", [_item class]
    );

    return _item;
}

- (NSString *)subtitleWith:(id)object {
    if (self.metadataKind) {
        return [self.metadata previewWithTarget:object];
    }

    // Item is probably a string; must return empty string since
    // these will be gathered into an array. If the object is a
    // just a string, it doesn't get a subtitle.
    return @"";
}

- (UIViewController *)viewerWith:(id)object {
    NSAssert(self.metadataKind, @"Static titles cannot be viewed");
    return [self.metadata viewerWithTarget:object];
}

- (UIViewController *)editorWith:(id)object {
    NSAssert(self.metadataKind, @"Static titles cannot be edited");
    return [self.metadata editorWithTarget:object];
}

- (UITableViewCellAccessoryType)accessoryTypeWith:(id)object {
    if (self.metadataKind) {
        return [self.metadata suggestedAccessoryTypeWithTarget:object];
    }

    return UITableViewCellAccessoryDisclosureIndicator;
}

#pragma mark - Helpers

- (FLEXProperty *)property { return _item; }
- (FLEXMethodBase *)method { return _item; }
- (FLEXIvar *)ivar { return _item; }
- (id<FLEXRuntimeMetadata>)metadata { return _item; }

@end