com.eclipsesource.v8

Class V8Function

java.lang.Object

com.eclipsesource.v8.V8Value

com.eclipsesource.v8.V8Object

com.eclipsesource.v8.V8Function

All Implemented Interfaces:

Releasable

public class V8Function
extends V8Object

A V8Value that represents a JavaScript function. JavaScript functions cannot be created in Java, but can be returned as the result of invoking a JS script or JS Function.

Field Summary

Fields inherited from class com.eclipsesource.v8.V8Value

BOOLEAN, BYTE, DOUBLE, FLOAT_32_ARRAY, FLOAT_64_ARRAY, INT_16_ARRAY, INT_32_ARRAY, INT_8_ARRAY, INTEGER, NULL, objectHandle, released, STRING, UNDEFINED, UNKNOWN, UNSIGNED_INT_16_ARRAY, UNSIGNED_INT_32_ARRAY, UNSIGNED_INT_8_ARRAY, UNSIGNED_INT_8_CLAMPED_ARRAY, v8, V8_ARRAY, V8_ARRAY_BUFFER, V8_FUNCTION, V8_OBJECT, V8_TYPED_ARRAY

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	V8Function(V8 v8)
	V8Function(V8 v8, JavaCallback javaCallback) Create a JavaScript function, that when invoked will call the javaCallback passed to the receiver.

Method Summary

Modifier and Type	Method and Description
Object	call(V8Object receiver, V8Array parameters) Invoke the JavaScript function on the current runtime.
protected V8Value	createTwin()
protected long	initialize(long runtimePtr, Object data)
V8Function	twin() Creates a new Java object pointing at the same V8 Value as this.

Methods inherited from class com.eclipsesource.v8.V8Object

add, add, add, add, add, addNull, addUndefined, contains, executeArrayFunction, executeBooleanFunction, executeDoubleFunction, executeFunction, executeIntegerFunction, executeJSFunction, executeJSFunction, executeObjectFunction, executeStringFunction, executeVoidFunction, get, getArray, getBoolean, getDouble, getInteger, getKeys, getObject, getString, getType, registerJavaMethod, registerJavaMethod, registerJavaMethod, registerJavaMethod, setPrototype, toString

Methods inherited from class com.eclipsesource.v8.V8Value

checkReleased, equals, getHandle, getRuntime, getStringRepresentaion, hashCode, isReleased, isUndefined, jsEquals, release, strictEquals

Methods inherited from class java.lang.Object

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

Constructor Detail

V8Function

public V8Function(V8 v8,
                  JavaCallback javaCallback)

Create a JavaScript function, that when invoked will call the javaCallback passed to the receiver.

Parameters:

v8 - The v8 runtime on which to create this function

javaCallback - The callback to invoke

V8Function

protected V8Function(V8 v8)

Method Detail

createTwin

protected V8Value createTwin()

Overrides:

createTwin in class V8Object

initialize

protected long initialize(long runtimePtr,
                          Object data)

Overrides:

initialize in class V8Value

twin

public V8Function twin()

Description copied from class: V8Value

Creates a new Java object pointing at the same V8 Value as this. If the value is mutated (by adding new members or changing existing ones) then both the original and twin will be updated. Twins are .equal and .strict equals, but not == in Java. Twins must be released separately since they have their own native resources.

Overrides:

twin in class V8Object

Returns:

A new Java object pointing at the same V8 Value as this.

call

public Object call(V8Object receiver,
                   V8Array parameters)

Invoke the JavaScript function on the current runtime.

Parameters:

receiver - The object on which to call the function on. The receiver will be mapped to 'this' in JavaScript. If receiver is null or undefined, then the V8 runtime will be used instead.

parameters - The parameters passed to the JS Function.

Returns:

The result of JavaScript function.