com.vaadin.flow.server.startup.

java.lang.Object
- com.vaadin.flow.server.startup.DevModeInitializer

All Implemented Interfaces:

ClassLoaderAwareServletContainerInitializer, VaadinContextStartupInitializer, VaadinServletContextStartupInitializer, Serializable, EventListener, javax.servlet.ServletContainerInitializer, javax.servlet.ServletContextListener
```
@WebListener
public class DevModeInitializer
extends Object
implements VaadinServletContextStartupInitializer, Serializable, javax.servlet.ServletContextListener
```
Servlet initializer starting node updaters as well as the webpack-dev-mode server.
For internal use only. May be renamed or removed in a future release.

Since:

2.0

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor and Description

DevModeInitializer()

Method Summary

All Methods
Modifier and Type	Method and Description
`void`	`contextDestroyed(javax.servlet.ServletContextEvent ctx)`
`void`	`contextInitialized(javax.servlet.ServletContextEvent ctx)`
`static void`	`initDevModeHandler(Set<Class<?>> classes, javax.servlet.ServletContext context)` Deprecated. Use `initDevModeHandler(Set, VaadinContext)` instead by wrapping `ServletContext` with `VaadinServletContext`.
`static void`	`initDevModeHandler(Set<Class<?>> classes, VaadinContext context)` Initialize the devmode server if not in production mode or compatibility mode.
`void`	`initialize(Set<Class<?>> classes, VaadinContext context)` Applies this initializer to the given context
`static boolean`	`isDevModeAlreadyStarted(javax.servlet.ServletContext servletContext)` Deprecated. Use `isDevModeAlreadyStarted(VaadinContext)` instead by wrapping `ServletContext` with `VaadinServletContext`.
`static boolean`	`isDevModeAlreadyStarted(VaadinContext context)` Shows whether `DevModeHandler` has been already started or not.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.vaadin.flow.server.startup.VaadinServletContextStartupInitializer
process

Methods inherited from interface com.vaadin.flow.server.startup.ClassLoaderAwareServletContainerInitializer
onStartup, requiresLookup

- Constructor Detail
  - DevModeInitializer
```
public DevModeInitializer()
```
- Method Detail
  - initialize
```
public void initialize(Set<Class<?>> classes,
                       VaadinContext context)
                throws VaadinInitializerException
```
    Description copied from interface: VaadinContextStartupInitializer
    
    Applies this initializer to the given context
    
    Specified by:
    
    initialize in interface VaadinContextStartupInitializer
    
    Parameters:
    
    classes - the Set of application classes which this initializer needs to do its job
    
    context - the VaadinContext to use with this initializer
    
    Throws:
    
    VaadinInitializerException - if an error has occurred
  - initDevModeHandler
```
@Deprecated
public static void initDevModeHandler(Set<Class<?>> classes,
                                                  javax.servlet.ServletContext context)
                                           throws javax.servlet.ServletException
```
    Deprecated. Use initDevModeHandler(Set, VaadinContext) instead by wrapping ServletContext with VaadinServletContext.
    
    Initialize the devmode server if not in production mode or compatibility mode.
    
    Parameters:
    
    classes - classes to check for npm- and js modules
    
    context - servlet context we are running in
    
    Throws:
    
    javax.servlet.ServletException - if dev mode can't be initialized
  - initDevModeHandler
```
public static void initDevModeHandler(Set<Class<?>> classes,
                                      VaadinContext context)
                               throws VaadinInitializerException
```
    Initialize the devmode server if not in production mode or compatibility mode.
    
    Parameters:
    
    classes - classes to check for npm- and js modules
    
    context - VaadinContext we are running in
    
    Throws:
    
    VaadinInitializerException - if dev mode can't be initialized
  - isDevModeAlreadyStarted
```
@Deprecated
public static boolean isDevModeAlreadyStarted(javax.servlet.ServletContext servletContext)
```
    Deprecated. Use isDevModeAlreadyStarted(VaadinContext) instead by wrapping ServletContext with VaadinServletContext.
    
    Shows whether DevModeHandler has been already started or not.
    
    Parameters:
    
    servletContext - The servlet context, not null
    
    Returns:
    
    true if DevModeHandler has already been started, false - otherwise
  - isDevModeAlreadyStarted
```
public static boolean isDevModeAlreadyStarted(VaadinContext context)
```
    Shows whether DevModeHandler has been already started or not.
    
    Parameters:
    
    context - The VaadinContext, not null
    
    Returns:
    
    true if DevModeHandler has already been started, false - otherwise
  - contextInitialized
```
public void contextInitialized(javax.servlet.ServletContextEvent ctx)
```
    Specified by:
    
    contextInitialized in interface javax.servlet.ServletContextListener
  - contextDestroyed
```
public void contextDestroyed(javax.servlet.ServletContextEvent ctx)
```
    Specified by:
    
    contextDestroyed in interface javax.servlet.ServletContextListener

com.vaadin.flow.server.startup.

Class DevModeInitializer

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface com.vaadin.flow.server.startup.VaadinServletContextStartupInitializer

Methods inherited from interface com.vaadin.flow.server.startup.ClassLoaderAwareServletContainerInitializer

Constructor Detail

DevModeInitializer

Method Detail

initialize

initDevModeHandler

initDevModeHandler

isDevModeAlreadyStarted

isDevModeAlreadyStarted

contextInitialized

contextDestroyed