Package org.htmlunit.javascript.host.file

Class FileReader

java.lang.Object

org.htmlunit.corejs.javascript.ScriptableObject

org.htmlunit.javascript.HtmlUnitScriptable

org.htmlunit.javascript.host.event.EventTarget

org.htmlunit.javascript.host.file.FileReader

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

public class FileReader
extends EventTarget

A JavaScript object for FileReader.

See Also:

• Serialized Form

Nested Class Summary

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

org.htmlunit.corejs.javascript.ScriptableObject.KeyComparator

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DONE	The entire read request has been completed.
static final int	EMPTY	No data has been loaded yet.
static final int	LOADING	Data is currently being loaded.
private static final org.apache.commons.logging.Log	LOG
private int	readyState_
private Object	result_

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

CONST, DONTENUM, PERMANENT, READONLY, UNINITIALIZED_CONST

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

NOT_FOUND

Constructor Summary

Constructors

Constructor	Description
FileReader()	Creates an instance.

Method Summary

Modifier and Type	Method	Description
org.htmlunit.corejs.javascript.Function	getOnerror()	Returns the onerror event handler for this FileReader.
org.htmlunit.corejs.javascript.Function	getOnload()	Returns the onload event handler for this FileReader.
int	getReadyState()	Returns the current state of the reading operation.
Object	getResult()	Returns the file's contents.
void	jsConstructor()	JavaScript constructor.
void	readAsArrayBuffer(Object object)	Reads the contents of the specified Blob or File.
void	readAsDataURL(Object object)	Reads the contents of the specified Blob or File.
void	readAsText(Object object, Object encoding)	Reads the contents of the specified Blob or File.
void	setOnerror(Object onerror)	Sets the onerror event handler for this FileReader.
void	setOnload(Object onload)	Sets the onload event handler for this FileReader.

Methods inherited from class org.htmlunit.javascript.host.event.EventTarget

addEventListener, clearEventListenersContainer, dispatchEvent, executeEventLocally, fireEvent, getEventHandler, getEventListenersContainer, hasEventHandlers, isEventHandlerOnWindow, removeEventListener, setEventHandler

Methods inherited from class org.htmlunit.javascript.HtmlUnitScriptable

clone, equivalentValues, get, getBrowserVersion, getClassName, getDefaultValue, getDomNodeOrDie, getDomNodeOrNull, getPrototype, getScriptableFor, getStartingScope, getWindow, getWindow, 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, checkPropertyChange, checkPropertyDefinition, defineClass, defineClass, defineClass, defineConst, defineConstProperty, defineFunctionProperties, defineOwnProperties, defineOwnProperty, defineOwnProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, delete, delete, delete, deleteProperty, deleteProperty, deleteProperty, ensureScriptable, ensureScriptableObject, 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, 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, putProperty, putProperty, putProperty, querySlot, redefineProperty, sameValue, sealObject, setAttributes, setAttributes, setAttributes, setAttributes, setAttributes, setCommonDescriptorProperties, setExternalArrayData, setGetterOrSetter, setPrototype, size

Methods inherited from class java.lang.Object

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

Field Details

LOG

private static final org.apache.commons.logging.Log LOG

EMPTY

public static final int EMPTY

No data has been loaded yet.

See Also:

• Constant Field Values

LOADING

public static final int LOADING

Data is currently being loaded.

See Also:

• Constant Field Values

DONE

public static final int DONE

The entire read request has been completed.

See Also:

• Constant Field Values

readyState_

private int readyState_

result_

private Object result_

Constructor Details

FileReader

public FileReader()

Creates an instance.

Method Details

jsConstructor

public void jsConstructor()

JavaScript constructor.

Overrides:

jsConstructor in class EventTarget

getReadyState

public int getReadyState()

Returns the current state of the reading operation.

Returns:

0, 1, or 2

getResult

public Object getResult()

Returns the file's contents.

Returns:

the file's contents

readAsDataURL

public void readAsDataURL(Object object)
                   throws IOException

Reads the contents of the specified Blob or File.

Parameters:

object - the Blob or File from which to read

Throws:

IOException - if an error occurs

readAsArrayBuffer

public void readAsArrayBuffer(Object object)

Reads the contents of the specified Blob or File.

Parameters:

object - the Blob or File from which to read

readAsText

public void readAsText(Object object,
 Object encoding)

Reads the contents of the specified Blob or File. When the read operation is complete, the readyState is changed to DONE, the loaded event is triggered, and the result attribute contains the contents of the file as a text string.

Parameters:

object - the Blob or File from which to read

encoding - the encoding

getOnload

public org.htmlunit.corejs.javascript.Function getOnload()

Returns the onload event handler for this FileReader.

Returns:

the onload event handler for this FileReader

setOnload

public void setOnload(Object onload)

Sets the onload event handler for this FileReader.

Parameters:

onload - the onload event handler for this FileReader

getOnerror

public org.htmlunit.corejs.javascript.Function getOnerror()

Returns the onerror event handler for this FileReader.

Returns:

the onerror event handler for this FileReader

setOnerror

public void setOnerror(Object onerror)

Sets the onerror event handler for this FileReader.

Parameters:

onerror - the onerror event handler for this FileReader