Interface JSObject

Methods

call

Object call(Object thiz,
            Object... args)

Call this object as a JavaScript function. This is equivalent to 'func.apply(thiz, args)' in JavaScript.

Parameters:

thiz - 'this' object to be passed to the function. This may be null.

args - arguments to method

Returns:

result of call

newObject

Object newObject(Object... args)

Call this 'constructor' JavaScript function to create a new object. This is equivalent to 'new func(arg1, arg2...)' in JavaScript.

Parameters:

args - arguments to method

Returns:

result of constructor call

eval

Object eval(String s)

Evaluate a JavaScript expression.

Parameters:

s - JavaScript expression to evaluate

Returns:

evaluation result

getMember

Object getMember(String name)

Retrieves a named member of this JavaScript object.

Parameters:

name - of member

Returns:

member

Throws:

NullPointerException - if name is null

getSlot

Object getSlot(int index)

Retrieves an indexed member of this JavaScript object.

Parameters:

index - index slot to retrieve

Returns:

member

hasMember

boolean hasMember(String name)

Does this object have a named member?

Parameters:

name - name of member

Returns:

true if this object has a member of the given name

hasSlot

boolean hasSlot(int slot)

Does this object have a indexed property?

Parameters:

slot - index to check

Returns:

true if this object has a slot

removeMember

void removeMember(String name)

Remove a named member from this JavaScript object

Parameters:

name - name of the member

Throws:

NullPointerException - if name is null

setMember

void setMember(String name,
               Object value)

Set a named member in this JavaScript object

Parameters:

name - name of the member

value - value of the member

Throws:

NullPointerException - if name is null

setSlot

void setSlot(int index,
             Object value)

Set an indexed member in this JavaScript object

Parameters:

index - index of the member slot

value - value of the member

keySet

Set<String> keySet()

Returns the set of all property names of this object.

Returns:

set of property names

values

Collection<Object> values()

Returns the set of all property values of this object.

Returns:

set of property values.

isInstance

boolean isInstance(Object instance)

Checking whether the given object is an instance of 'this' object.

Parameters:

instance - instance to check

Returns:

true if the given 'instance' is an instance of this 'function' object

isInstanceOf

boolean isInstanceOf(Object clazz)

Checking whether this object is an instance of the given 'clazz' object.

Parameters:

clazz - clazz to check

Returns:

true if this object is an instance of the given 'clazz'

getClassName

String getClassName()

ECMA [[Class]] property

Returns:

ECMA [[Class]] property value of this object

isFunction

boolean isFunction()

Is this a function object?

Returns:

if this mirror wraps a ECMAScript function instance

isStrictFunction

boolean isStrictFunction()

Is this a 'use strict' function object?

Returns:

true if this mirror represents a ECMAScript 'use strict' function

isArray

boolean isArray()

Is this an array object?

Returns:

if this mirror wraps a ECMAScript array object

toNumber

@Deprecated
default double toNumber()

Returns this object's numeric value.

Returns:

this object's numeric value.

getDefaultValue

default Object getDefaultValue(Class<?> hint)
                        throws UnsupportedOperationException

Implements this object's [[DefaultValue]] method as per ECMAScript 5.1 section 8.6.2.

Parameters:

hint - the type hint. Should be either null, Number.class or String.class.

Returns:

this object's default value.

Throws:

UnsupportedOperationException - if the conversion can't be performed. The engine will convert this exception into a JavaScript TypeError.