Gambling company test
Task
Mission is to build a simple iOS application, that displays three types of buttons.
Important notes:
- Use Swift
- The number, order and types of the buttons are retrieved from the server - in order to make the implementation easier, one can define an array that will hold the button types
- On each press of button the application displays a pop-up with the button's name
- Provide application class diagram (UML is preferable)
- Submit the solution using a git repo
Implementation guidelines:
- Easy to add new types of buttons
- If the order of the buttons changes, code should remain the same
- Follow iOS UI spirit /Guidelines
- Design patterns - the more the merrier
Solution
Since the end goal of task is to be able stylize application to different custumers according to specific flags, AbstractFactory design pattern is best choice here, as it allows us easily change variants of elements without dependency on concrete types.
To hide implementation details of factory choice I used Builder pattern as ButtonBuilder which can be easily extended to UIBuilder with addition of new element classes.
To expand number of ui component styles, we need to create one new ConcreteFactory and inject it in our UIBuilder.