org.htmlunit.javascript.host.file

Class Blob

java.lang.Object

org.htmlunit.corejs.javascript.SlotMapOwner

org.htmlunit.corejs.javascript.ScriptableObject

org.htmlunit.javascript.HtmlUnitScriptable

org.htmlunit.javascript.host.file.Blob

All Implemented Interfaces:

Serializable, Cloneable, org.htmlunit.corejs.javascript.ConstProperties, org.htmlunit.corejs.javascript.debug.DebuggableObject, org.htmlunit.corejs.javascript.Scriptable, org.htmlunit.corejs.javascript.SymbolScriptable

Direct Known Subclasses:

File

public class Blob
extends HtmlUnitScriptable

A JavaScript object for Blob.

Author:

Ahmed Ashour, Ronald Brill, Lai Quang Duong

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	Blob.Backend The backend used for saving the blob.
protected static class	Blob.InMemoryBackend Implementation of the Blob.Backend that stores the bytes in memory.

Nested classes/interfaces inherited from class org.htmlunit.corejs.javascript.ScriptableObject

org.htmlunit.corejs.javascript.ScriptableObject.KeyComparator, org.htmlunit.corejs.javascript.ScriptableObject.LambdaGetterFunction, org.htmlunit.corejs.javascript.ScriptableObject.LambdaSetterFunction

Field Summary

Fields inherited from class org.htmlunit.corejs.javascript.ScriptableObject

CONST, DONTENUM, EMPTY, PERMANENT, READONLY, UNINITIALIZED_CONST

Fields inherited from interface org.htmlunit.corejs.javascript.Scriptable

NOT_FOUND

Constructor Summary

Constructors

Constructor and Description
Blob() Creates an instance.
Blob(byte[] bytes, String contentType) Ctor.

Method Summary

Modifier and Type	Method and Description
org.htmlunit.corejs.javascript.NativePromise	arrayBuffer()
protected static String	extractFileTypeOrDefault(org.htmlunit.corejs.javascript.ScriptableObject properties)
protected static long	extractLastModifiedOrDefault(org.htmlunit.corejs.javascript.ScriptableObject properties)
void	fillRequest(WebRequest webRequest) Sets the specified request with the parameters in this FormData.
protected Blob.Backend	getBackend()
byte[]	getBytes()
KeyDataPair	getKeyDataPair(String name, String fileName) Delegates the KeyDataPair construction to the backend.
long	getSize() Returns the size property.
String	getType() Returns the type property.
void	jsConstructor(org.htmlunit.corejs.javascript.NativeArray fileBits, org.htmlunit.corejs.javascript.ScriptableObject properties) Creates an instance.
protected void	setBackend(Blob.Backend backend)
Blob	slice(Object start, Object end, Object contentType)
ReadableStream	stream()
org.htmlunit.corejs.javascript.NativePromise	text()

Methods inherited from class org.htmlunit.javascript.HtmlUnitScriptable

clone, equivalentValues, get, getBrowserVersion, getClassName, getDefaultValue, getDomNodeOrDie, getDomNodeOrNull, getPrototype, getScriptableFor, getWindow, getWindow, getWindowFromTopCallScope, getWithPreemption, has, hasInstance, initParentScope, makeScriptableFor, put, setClassName, setDomNode, setDomNode, setParentScope, setupPromise, setupRejectedPromise

Methods inherited from class org.htmlunit.corejs.javascript.ScriptableObject

applyDescriptorToAttributeBitset, associateValue, avoidObjectDetection, buildDataDescriptor, callMethod, callMethod, checkPropertyChangeForSlot, checkPropertyDefinition, defineClass, defineClass, defineClass, defineConst, defineConstProperty, defineFunctionProperties, defineOwnProperties, defineOwnProperty, defineOwnProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, delete, delete, delete, deleteProperty, deleteProperty, deleteProperty, ensureScriptable, ensureScriptableObject, ensureScriptableObjectButNotSymbol, ensureSymbolScriptable, get, get, get, getAllIds, getArrayPrototype, getAssociatedValue, getAttributes, getAttributes, getAttributes, getAttributes, getAttributes, getClassPrototype, getDefaultValue, getExternalArrayData, getExternalArrayLength, getFunctionPrototype, getGeneratorFunctionPrototype, getGetterOrSetter, getGetterOrSetter, getIds, getObjectPrototype, getOwnPropertyDescriptor, getParentScope, getProperty, getProperty, getProperty, getPropertyIds, getPrototype, getSuperProperty, getSuperProperty, getSuperProperty, getTopLevelScope, getTopScopeValue, getTypedProperty, getTypedProperty, getTypeOf, has, has, hasProperty, hasProperty, hasProperty, isAccessorDescriptor, isConst, isDataDescriptor, isEmpty, isExtensible, isFalse, isGenericDescriptor, isGetterOrSetter, isSealed, isTrue, preventExtensions, put, put, putConst, putConstProperty, putOwnProperty, putOwnProperty, putOwnProperty, putProperty, putProperty, putProperty, putSuperProperty, putSuperProperty, putSuperProperty, querySlot, redefineProperty, sameValue, sealObject, setAttributes, setAttributes, setAttributes, setAttributes, setAttributes, setCommonDescriptorProperties, setExternalArrayData, setGetterOrSetter, setPrototype, size

Methods inherited from class org.htmlunit.corejs.javascript.SlotMapOwner

createSlotMap

Methods inherited from class java.lang.Object

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

Constructor Detail

Blob

public Blob()

Creates an instance.

Blob

public Blob(byte[] bytes,
            String contentType)

Ctor.

Parameters:

bytes - the bytes

contentType - the content type

Method Detail

extractFileTypeOrDefault

protected static String extractFileTypeOrDefault(org.htmlunit.corejs.javascript.ScriptableObject properties)

extractLastModifiedOrDefault

protected static long extractLastModifiedOrDefault(org.htmlunit.corejs.javascript.ScriptableObject properties)

jsConstructor

public void jsConstructor(org.htmlunit.corejs.javascript.NativeArray fileBits,
                          org.htmlunit.corejs.javascript.ScriptableObject properties)

Creates an instance.

Parameters:

fileBits - the bits

properties - the properties

getSize

public long getSize()

Returns the size property.

Returns:

the size property

getType

public String getType()

Returns the type property.

Returns:

the type property

arrayBuffer

public org.htmlunit.corejs.javascript.NativePromise arrayBuffer()

Returns:

a Promise that resolves with an ArrayBuffer containing the data in binary form.

slice

public Blob slice(Object start,
                  Object end,
                  Object contentType)

Parameters:

start - An index into the Blob indicating the first byte to include in the new Blob. If you specify a negative value, it's treated as an offset from the end of the Blob toward the beginning. For example, -10 would be the 10th from last byte in the Blob. The default value is 0. If you specify a value for start that is larger than the size of the source Blob, the returned Blob has size 0 and contains no data.

end - An index into the Blob indicating the first byte that will not be included in the new Blob (i.e. the byte exactly at this index is not included). If you specify a negative value, it's treated as an offset from the end of the Blob toward the beginning. For example, -10 would be the 10th from last byte in the Blob. The default value is size.

contentType - The content type to assign to the new Blob; this will be the value of its type property. The default value is an empty string.

Returns:

a new Blob object which contains data from a subset of the blob on which it's called.

stream

public ReadableStream stream()

Returns:

a ReadableStream which, upon reading, returns the contents of the Blob.

text

public org.htmlunit.corejs.javascript.NativePromise text()

Returns:

a Promise that resolves with a string containing the contents of the blob, interpreted as UTF-8.

getBytes

public byte[] getBytes()

Returns:

the bytes of this blob

fillRequest

public void fillRequest(WebRequest webRequest)

Sets the specified request with the parameters in this FormData.

Parameters:

webRequest - the web request to fill

getKeyDataPair

public KeyDataPair getKeyDataPair(String name,
                                  String fileName)

Delegates the KeyDataPair construction to the backend.

Parameters:

name - the name

fileName - the filename

Returns:

the constructed KeyDataPair

getBackend

protected Blob.Backend getBackend()

setBackend

protected void setBackend(Blob.Backend backend)