de.saxsys.jfx.mvvm.di

Class DependencyInjector

java.lang.Object

de.saxsys.jfx.mvvm.di.DependencyInjector

public class DependencyInjector
extends Object

This class handles the dependency injection for the mvvmFX framework. The main reason for this class is to make it possible for the user to use her own dependency injection mechanism/framework. The user can define how instances should be retrieved by setting an callback that returns an instance for a given class type (see setCustomInjector(javafx.util.Callback<java.lang.Class<?>, java.lang.Object>).

Author:

manuel.mauky

Method Summary

Modifier and Type	Method and Description
javafx.util.Callback<Class<?>,Object>	getCustomInjector() See setCustomInjector(javafx.util.Callback) for more details.
static DependencyInjector	getInstance()
<T> T	getInstanceOf(Class<? extends T> type) Returns an instance of the given type.
boolean	isCustomInjectorDefined()
void	setCustomInjector(javafx.util.Callback<Class<?>,Object> callback) Define a custom injector that is used to retrieve instances.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getInstance

public static DependencyInjector getInstance()

getInstanceOf

public <T> T getInstanceOf(Class<? extends T> type)

Returns an instance of the given type. When there is a custom injector defined (See: setCustomInjector(javafx.util.Callback)) then this injector is used. Otherwise a new instance of the desired type is created. This is done by a call to Class.newInstance() which means that all constraints of the newInstance method are also need to be satisfied.

Type Parameters:

T -

Parameters:

type -

Returns:

getCustomInjector

public javafx.util.Callback<Class<?>,Object> getCustomInjector()

See setCustomInjector(javafx.util.Callback) for more details.

Returns:

the defined custom injector if any

setCustomInjector

public void setCustomInjector(javafx.util.Callback<Class<?>,Object> callback)

Define a custom injector that is used to retrieve instances. This can be used as a bridge to you dependency injection framework. The callback has to return an instance for the given class type. This is same way as it is done in the FXMLLoader.setControllerFactory(javafx.util.Callback) method.

Parameters:

callback - the callback that returns instances of a specific class type.

isCustomInjectorDefined

public boolean isCustomInjectorDefined()

Returns:

true when a custom injector is defined, otherwise false.