com.vaadin.util

Class FileTypeResolver

java.lang.Object

com.vaadin.util.FileTypeResolver

public class FileTypeResolver
extends Object

Utility class that can figure out mime-types and icons related to files.

Note : The icons are associated purely to mime-types, so a file may not have a custom icon accessible with this class.

Since:

3.0

Author:

Vaadin Ltd.

Field Summary

Fields

Modifier and Type	Field and Description
static Resource	DEFAULT_ICON Default icon given if no icon is specified for a mime-type.
static String	DEFAULT_MIME_TYPE Default mime-type.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	FileTypeResolver()

Method Summary

Modifier and Type	Method and Description
static void	addExtension(String extension, String mimeType) Adds a mime-type mapping for the given filename extension.
static Map<String,String>	getExtensionToMIMETypeMapping() Gets the internal file extension to mime-type mapping.
static String	getMIMEType(File file) Gets the mime-type for a file.
static String	getMIMEType(String fileName) Gets the mime-type of a file.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_ICON

public static Resource DEFAULT_ICON

Default icon given if no icon is specified for a mime-type.

DEFAULT_MIME_TYPE

public static String DEFAULT_MIME_TYPE

Default mime-type.

Constructor Detail

FileTypeResolver

protected FileTypeResolver()

Method Detail

getMIMEType

public static String getMIMEType(String fileName)

Gets the mime-type of a file. Currently the mime-type is resolved based only on the file name extension.

Parameters:

fileName - the name of the file whose mime-type is requested.

Returns:

mime-type String for the given filename

getMIMEType

public static String getMIMEType(File file)

Gets the mime-type for a file. Currently the returned file type is resolved by the filename extension only.

Parameters:

file - the file whose mime-type is requested.

Returns:

the files mime-type String

addExtension

public static void addExtension(String extension,
                                String mimeType)

Adds a mime-type mapping for the given filename extension. If the extension is already in the internal mapping it is overwritten.

Parameters:

extension - the filename extension to be associated with MIMEType.

mimeType - the new mime-type for extension.

getExtensionToMIMETypeMapping

public static Map<String,String> getExtensionToMIMETypeMapping()

Gets the internal file extension to mime-type mapping.

Returns:

unmodifiable map containing the current file extension to mime-type mapping