The MVC Connection 

In general a visual component is a composition of three distinct aspects:

  • The way that a particular component looks when rendered on screen
  • The way that a particular component reacts to an user
  • The state information which is associated with a particular component

No matter what the architecture used to implement a particular component it must implicitly contain the three parts i.e. Model-View-Controller or MVC for short.

In the MVC terminology we have ,

  • Model:

the Model corresponds to the state information which is associated with a component. For example-in case of a check box, the model contains a field which indicates whether the box is checked or unchecked.

  • View:

The view determines how a component has displayed on the screen, including any aspects of view that are affected by the current state of the model.

  • Controller:

The controller determines how the component will react to the user.

For example, when user clicks a check box, the controller will reacts by changing  model to reflect the user’s choice (checked or unchecked) which then results in the view being updated.

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