Behavioral Design Patterns in C++ - DialogBox - III

The lecture discusses the interaction of widget classes, highlighting issues like circular dependencies and tight coupling. It introduces a display function to show control information and addresses the problem of reusability due to tight coupling. The solution proposed is using the mediator pattern, which will be elaborated in the next lecture.

What is the purpose of the display function in the widget interaction setup?

• To modify the widget classes

• To display the content of the controls

• To create new widget instances

• To delete existing widgets

What issue arises due to the interaction between widget classes?

• Slow execution speed

• Excessive memory usage

• Circular dependency

• Lack of user input

Why is tight coupling between classes problematic?

• It increases code readability

• It enhances performance

• It makes the code non-reusable

• It simplifies debugging

How does the mediator pattern help in widget class interactions?

• By reducing the coupling between classes

• By eliminating the need for a display function

• By adding more dependencies

• By increasing the number of classes

What role does the dialog box play in the mediator pattern?

• It acts as a mediator for the widget classes

• It stores user input data

• It serves as a backup for widget instances

• It replaces the display function