Build an Educational Assessment App

At a glance

Project structure

Source bundle/
├── Assessment Time/
│   ├── Swift/
│   │   ├── AppDelegate.swift
│   │   ├── WindowController.swift
│   │   ├── LogViewController.swift
│   │   └── ViewController.swift
│   └── Objective-C/
│       ├── main.m
│       ├── WindowController.m
│       ├── LogViewController.m
│       ├── ViewController.m
│       ├── LogViewController.h
│       ├── ViewController.h
│       └── WindowController.h
└── Assessment Time - SwiftUI.entitlements

Structure observations

• Architecturally prominent files are ranked from entry points and role-named declarations; resource-only paths are omitted.
• Primary languages: C/Objective-C header, Objective-C, Swift.
• The verified tree contains 6 project/configuration file(s) and 7 source declaration(s).

Overall architecture

flowchart LR
    N1["AppDelegate"]
    N2["LogViewController"]
    N3["AutomaticAssessmentConfiguration APIs"]
    N1 --> N2
    N2 --> N3

Reference code

Assessment Time/Swift/AppDelegate.swift:11 — architecture anchor

@main
@objc(AppDelegate)
class AppDelegate: NSObject, NSApplicationDelegate {

}

Interpretation

The arrows summarize the source-visible entry, role-named types or folders, and framework direction; when nodes come from structural folders, the sequence is a high-level interpretation rather than proof that every adjacent node calls the next. Ownership is claimed only where the next section cites a stored property or assignment. The diagram is intentionally limited to the dominant path into Automatic Assessment Configuration.

Ownership and state

classDiagram
    WindowController o-- NSToolbarItem : lockUnlockItem
    WindowController o-- NSSegmentedControl : calculatorOptions
    WindowController o-- NSSegmentedControl : dictionaryOptions
    WindowController o-- AEAssessmentSession : session

Ownership evidence

Assessment Time/Objective-C/WindowController.m:11 — stored dependency or nearest verified ownership anchor

@property (weak) IBOutlet NSToolbarItem *lockUnlockItem;
@property (weak) IBOutlet NSSegmentedControl *calculatorOptions;
@property (weak) IBOutlet NSSegmentedControl *dictionaryOptions;
- (IBAction)lockSession:(id)sender;

@property AEAssessmentSession *session;

Composition arrows indicate a source-visible construction expression or locally owned value state; aggregation means the owner stores or receives a dependency without proving exclusive lifetime ownership.

Class and protocol design

Assessment Time/Swift/AppDelegate.swift:13 — representative type boundary

class AppDelegate: NSObject, NSApplicationDelegate {

}

No local protocol conformance is claimed as protocol-oriented design; external framework conformances are listed only as dependencies.

Access control

Reference code

Assessment Time/Objective-C/LogViewController.m:11 — representative boundary

@interface LogViewController ()
@property (weak) IBOutlet NSTextView *logTextView;
@property (strong) NSDateFormatter *formatter;
@end

Swift declarations without a modifier are internal; explicit private, fileprivate, private(set), public, or open entries above are interpreted by language semantics. Objective-C/C samples instead rely on header and implementation boundaries, which are not equivalent to Swift lexical privacy.

Logic ownership and placement

Design patterns

Naming conventions

• Types: Controller: LogViewController, ViewController, WindowController; Delegate: AppDelegate.
• Protocols: no local protocol declaration in the scanned source.
• Methods: lockSession, windowDidLoad, setupAssessmentSession, participantConfiguration, attemptToOpenAppWithBundleID, updateConfiguration, updateLockButton, log.
• Files: Assessment Time/Swift/AppDelegate.swift, Assessment Time/Objective-C/WindowController.m, Assessment Time/Swift/WindowController.swift, Assessment Time/Objective-C/LogViewController.m, Assessment Time/Objective-C/ViewController.m, Assessment Time/Objective-C/LogViewController.h.

Architecture takeaways

• AppDelegate is the main source-visible entry or composition anchor for this sample.
• Framework work reaches Cocoa, AutomaticAssessmentConfiguration, WebKit through a deliberately small high-level chain; the detailed API graph remains inside the cited implementation files.
• Stored-property evidence identifies lifecycle collaboration; it does not by itself prove exclusive object ownership.
• Access-control conclusions separate verified language visibility from the likely design rationale.
• The source does not justify labeling the design protocol-oriented.

Source map

• Official Apple documentation