com.vaadin.server.

java.lang.Object
- com.vaadin.server.SynchronizedRequestHandler
- - com.vaadin.server.UnsupportedBrowserHandler

All Implemented Interfaces:

RequestHandler, Serializable
```
public class UnsupportedBrowserHandler
extends SynchronizedRequestHandler
```
A RequestHandler that presents an informative page if the browser in use is unsupported. Recognizes Chrome Frame and allow it to be used.
This handler is usually added to the application by LegacyCommunicationManager.

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

static String FORCE_LOAD_COOKIE
Cookie used to ignore browser checks

Constructor Summary

Constructors
Constructor Description

UnsupportedBrowserHandler()

Method Summary

All Methods
Modifier and Type	Method	Description
`boolean`	`synchronizedHandleRequest(VaadinSession session, VaadinRequest request, VaadinResponse response)`	Identical to `SynchronizedRequestHandler.handleRequest(VaadinSession, VaadinRequest, VaadinResponse)` except the `VaadinSession` is locked before this is called and unlocked after this has completed.
`protected void`	`writeBrowserTooOldPage(VaadinRequest request, VaadinResponse response)`	Writes a page encouraging the user to upgrade to a more current browser.

Methods inherited from class com.vaadin.server.SynchronizedRequestHandler
canHandleRequest, handleRequest

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

- Field Detail
  - FORCE_LOAD_COOKIE
```
public static final String FORCE_LOAD_COOKIE
```
    Cookie used to ignore browser checks
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - UnsupportedBrowserHandler
```
public UnsupportedBrowserHandler()
```
- Method Detail
  - synchronizedHandleRequest
```
public boolean synchronizedHandleRequest(VaadinSession session,
                                         VaadinRequest request,
                                         VaadinResponse response)
                                  throws IOException
```
    Description copied from class: SynchronizedRequestHandler
    
    Identical to SynchronizedRequestHandler.handleRequest(VaadinSession, VaadinRequest, VaadinResponse) except the VaadinSession is locked before this is called and unlocked after this has completed.
    
    Specified by:
    
    synchronizedHandleRequest in class SynchronizedRequestHandler
    
    Parameters:
    
    session - The session for the request
    
    request - The request to handle
    
    response - The response object to which a response can be written.
    
    Returns:
    
    true if a response has been written and no further request handlers should be called, otherwise false
    
    Throws:
    
    IOException - If an IO error occurred
    
    See Also:
    
    SynchronizedRequestHandler.handleRequest(VaadinSession, VaadinRequest, VaadinResponse)
  - writeBrowserTooOldPage
```
protected void writeBrowserTooOldPage(VaadinRequest request,
                                      VaadinResponse response)
                               throws IOException
```
    Writes a page encouraging the user to upgrade to a more current browser.
    
    Parameters:
    
    request -
    
    response -
    
    Throws:
    
    IOException

com.vaadin.server.

Class UnsupportedBrowserHandler

Field Summary

Constructor Summary

Method Summary

Methods inherited from class com.vaadin.server.SynchronizedRequestHandler

Methods inherited from class java.lang.Object

Field Detail

FORCE_LOAD_COOKIE

Constructor Detail

UnsupportedBrowserHandler

Method Detail

synchronizedHandleRequest

writeBrowserTooOldPage