org.vectomatic.file

Class Blob

java.lang.Object

com.google.gwt.core.client.JavaScriptObject

org.vectomatic.file.Blob

Direct Known Subclasses:

File

public class Blob
extends com.google.gwt.core.client.JavaScriptObject

A Blob object represents a file-like object of raw data. It's used to represent data that isn't necessarily in a JavaScript-native format. The File interface is based on it, inheriting the Blob's functionality and expanding it to support files on the user's system.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Blob()

Method Summary

Modifier and Type	Method and Description
String	createObjectURL() Deprecated. Replaced by FileUtils.createObjectURL(org.vectomatic.file.Blob)
long	getSize() The size, in bytes, of the data contained in the Blob object.
String	getType() An ASCII-encoded string, in all lower case, indicating the MIME type of the data contained in the Blob.
void	revokeObjectURL(String url) Deprecated. Replaced by FileUtils.revokeObjectURL(java.lang.String)
Blob	slice() Returns a new Blob object containing a full copy of the data in the source Blob.
Blob	slice(long start) Returns a new Blob object containing the data in the specified range of bytes of the source Blob.
Blob	slice(long start, long end) Returns a new Blob object containing the data in the specified range of bytes of the source Blob.
Blob	slice(long start, long end, String contentType) Returns a new Blob object containing the data in the specified range of bytes of the source Blob.

Methods inherited from class com.google.gwt.core.client.JavaScriptObject

cast, createArray, createArray, createFunction, createObject, equals, hashCode, toSource, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Blob

protected Blob()

Method Detail

getSize

public final long getSize()

The size, in bytes, of the data contained in the Blob object.

Returns:

The size, in bytes, of the data contained in the Blob object.

getType

public final String getType()

An ASCII-encoded string, in all lower case, indicating the MIME type of the data contained in the Blob. If the type is unknown, this string is empty.

Returns:

The MIME type of the data contained in the Blob

slice

public final Blob slice()

Returns a new Blob object containing a full copy of the data in the source Blob.

Returns:

The new Blob object

slice

public final Blob slice(long start)

Returns a new Blob object containing the data in the specified range of bytes of the source Blob.

Parameters:

start - An index into the Blob indicating the first byte to copy into the new Blob. If you specify a negative value, it's treated as an offset from the end of the string toward the beginning (for example, -10 would be the 10th from last byte in the Blob).

Returns:

The new Blob object

slice

public final Blob slice(long start,
                        long end)

Returns a new Blob object containing the data in the specified range of bytes of the source Blob.

Parameters:

start - An index into the Blob indicating the first byte to copy into the new Blob. If you specify a negative value, it's treated as an offset from the end of the string toward the beginning (for example, -10 would be the 10th from last byte in the Blob).

end - An index into the Blob indicating the last byte to copy into the new Blob. If you specify a negative value, it's treated as an offset from the end of the string toward the beginning (for example, -10 would be the 10th from last byte in the Blob).

Returns:

The new Blob object

slice

public final Blob slice(long start,
                        long end,
                        String contentType)

Returns a new Blob object containing the data in the specified range of bytes of the source Blob.

Parameters:

start - An index into the Blob indicating the first byte to copy into the new Blob. If you specify a negative value, it's treated as an offset from the end of the string toward the beginning (for example, -10 would be the 10th from last byte in the Blob).

end - An index into the Blob indicating the last byte to copy into the new Blob. If you specify a negative value, it's treated as an offset from the end of the string toward the beginning (for example, -10 would be the 10th from last byte in the Blob).

contentType - The content type to assign to the new Blob; this will be the value of its type property.

Returns:

The new Blob object

createObjectURL

@Deprecated
public final String createObjectURL()

Deprecated. Replaced by FileUtils.createObjectURL(org.vectomatic.file.Blob)

revokeObjectURL

@Deprecated
public final void revokeObjectURL(String url)

Deprecated. Replaced by FileUtils.revokeObjectURL(java.lang.String)