ImageLoaderFactory class

A factory class for creating instances of ImageLoader.

The ImageLoaderFactory class is responsible for providing the appropriate image loader implementation based on the specified ImageType. It allows for flexible instantiation of image loaders and supports overriding the default loader behavior for testing purposes.

This factory pattern is useful for managing multiple types of image loading strategies in a clean and maintainable way.

Methods:

  • ImageLoader getImageLoader(ImageType imageType):

    • Returns an instance of ImageLoader based on the specified imageType.
    • Parameters:
      • imageType: An ImageType enum value that indicates the type of image loader to create (e.g., NETWORK, ASSET, SVG, FILE).
    • Returns: An instance of ImageLoader corresponding to the requested image type.
    • Throws:
    • Example: 
      ImageLoader loader = ImageLoaderFactory.getImageLoader(ImageType.NETWORK);

  • void setLoaderOverride(ImageLoader Function(ImageType) loader):

    • Allows for overriding the default loader implementation, useful for testing or custom behavior.
    • Parameters:

  • void resetLoaderOverride():

    • Resets the loader override to the default implementation.

Usage:

The factory pattern allows clients to request specific image loaders without needing to know the concrete classes. This abstraction makes it easier to manage different loading strategies and facilitates unit testing by allowing developers to inject mock loaders as needed.

Constructors

ImageLoaderFactory()

Properties

hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Static Methods

getImageLoader(ImageType imageType) → ImageLoader
Returns an instance of ImageLoader based on the specified imageType.
resetLoaderOverride() → void
Resets the loader override to the default implementation.
setLoaderOverride(ImageLoader loader(ImageType)) → void
Sets a custom loader implementation for testing purposes.