This documentation outlines the structure and components of a shape drawing application implemented in Java. The application is designed around the Model-View-Controller (MVC) architecture and consists of several key interfaces and classes.
PhotoAlbumMain is the main class of the application and serves as its entry point. It parses command-line arguments to configure and run the application. It validates command-line arguments and prints error messages for missing or invalid inputs.
In the main method, command-line arguments are parsed using a switch statement. The PhotoAlbumMain class creates and configures a Controller object to parse input files and generate outputs based on view configurations.
IModel defines the operations expected from the model in the shape drawing application. The model maintains a canvas of shapes and provides methods for adding, removing, resizing, and moving shapes. It also supports the creation and management of snapshots to capture the state of the canvas.
Model is the concrete class that implements the IModel interface. It contains two primary fields: canvas (a list of shapes in the model) and snapshots (a list of snapshots captured from the model). The Model class provides implementations for all the methods defined in the IModel interface.
A Snapshot represents a read-only copy of the model's state at a specific moment in time. Each Snapshot is a copy of the model's canvas tagged with a timestamp id and description.
The Snapshot class implements the ISnapshot interface, which defines methods for retrieving information about the snapshot.
In the Snapshot class, the constructor takes a short description of the snapshot and the current state of the model's canvas as input.
It creates a new list of shapes and adds shapes from the input list as new Rectangle and Oval objects, ensuring immutability.
IController is an interface for the controller class, responsible for coordinating interactions between the model and view components. It defines methods for parsing files, managing snapshots, generating outputs, and retrieving information from the view.
The Controller class implements IController and acts as the central component of the application. It initializes the model and view based on provided parameters and coordinates their interactions.
The view component is responsible for rendering the application's user interface. It's represented by two concrete classes: GUIView and WebView. Both classes implement the IView interface, defining methods for generating output based on snapshots.
GUIView displays snapshots graphically in a Swing window with navigation controls, while WebView generates an HTML representation of the snapshots. Both classes provide methods for interacting with snapshots and user interfaces.
This documentation provides an overview of the key components and their interactions in the shape drawing application. The Model-View-Controller design pattern separates data, user interface, and control flow, enabling flexibility and maintainability in the application's design.