Package com.microsoft.playwright.impl

Class WorkerImpl

java.lang.Object

com.microsoft.playwright.impl.LoggingSupport

com.microsoft.playwright.impl.ChannelOwner

com.microsoft.playwright.impl.WorkerImpl

All Implemented Interfaces:

Worker

class WorkerImpl
extends ChannelOwner
implements Worker

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static enum	WorkerImpl.EventType

Nested classes/interfaces inherited from interface com.microsoft.playwright.Worker

Worker.WaitForCloseOptions

Field Summary

Fields

Modifier and Type	Field	Description
private final ListenerCollection<WorkerImpl.EventType>	listeners
(package private) PageImpl	page

Fields inherited from class com.microsoft.playwright.impl.ChannelOwner

connection, guid, initializer, type

Constructor Summary

Constructors

Constructor	Description
WorkerImpl(ChannelOwner parent, String type, String guid, com.google.gson.JsonObject initializer)

Method Summary

Modifier and Type	Method	Description
Object	evaluate(String pageFunction, Object arg)	Returns the return value of expression.
JSHandle	evaluateHandle(String pageFunction, Object arg)	Returns the return value of expression as a JSHandle.
protected void	handleEvent(String event, com.google.gson.JsonObject params)
void	offClose(Consumer<Worker> handler)	Removes handler that was previously added with onClose(handler).
void	onClose(Consumer<Worker> handler)	Emitted when this dedicated WebWorker is terminated.
String	url()
Worker	waitForClose(Worker.WaitForCloseOptions options, Runnable code)	Performs action and waits for the Worker to close.
private Worker	waitForCloseImpl(Worker.WaitForCloseOptions options, Runnable code)
private <T> T	waitForEventWithTimeout(WorkerImpl.EventType eventType, Runnable code, Double timeout)

Methods inherited from class com.microsoft.playwright.impl.ChannelOwner

adopt, disposeChannelOwner, runUntil, sendMessage, sendMessage, sendMessageAsync, toProtocolRef, withLogging, withWaitLogging

Methods inherited from class com.microsoft.playwright.impl.LoggingSupport

logApi, logApiIfEnabled, logWithTimestamp, withLogging

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.microsoft.playwright.Worker

evaluate, evaluateHandle, waitForClose

Field Details

listeners

private final ListenerCollection<WorkerImpl.EventType> listeners

page

PageImpl page

Constructor Details

WorkerImpl

WorkerImpl(ChannelOwner parent,
 String type,
 String guid,
 com.google.gson.JsonObject initializer)

Method Details

onClose

public void onClose(Consumer<Worker> handler)

Description copied from interface: Worker

Emitted when this dedicated WebWorker is terminated.

Specified by:

onClose in interface Worker

offClose

public void offClose(Consumer<Worker> handler)

Description copied from interface: Worker

Removes handler that was previously added with onClose(handler).

Specified by:

offClose in interface Worker

waitForEventWithTimeout

private <T> T waitForEventWithTimeout(WorkerImpl.EventType eventType,
 Runnable code,
 Double timeout)

waitForClose

public Worker waitForClose(Worker.WaitForCloseOptions options,
 Runnable code)

Description copied from interface: Worker

Performs action and waits for the Worker to close.

Specified by:

waitForClose in interface Worker

Parameters:

code - Callback that performs the action triggering the event.

waitForCloseImpl

private Worker waitForCloseImpl(Worker.WaitForCloseOptions options,
 Runnable code)

evaluate

public Object evaluate(String pageFunction,
 Object arg)

Description copied from interface: Worker

Returns the return value of expression.

If the function passed to the Worker.evaluate() returns a Promise, then Worker.evaluate() would wait for the promise to resolve and return its value.

If the function passed to the Worker.evaluate() returns a non-[Serializable] value, then Worker.evaluate() returns undefined. Playwright also supports transferring some additional values that are not serializable by JSON: -0, NaN, Infinity, -Infinity.

Specified by:

evaluate in interface Worker

Parameters:

pageFunction - JavaScript expression to be evaluated in the browser context. If the expression evaluates to a function, the function is automatically invoked.

arg - Optional argument to pass to expression.

evaluateHandle

public JSHandle evaluateHandle(String pageFunction,
 Object arg)

Description copied from interface: Worker

Returns the return value of expression as a JSHandle.

The only difference between Worker.evaluate() and Worker.evaluateHandle() is that Worker.evaluateHandle() returns JSHandle.

If the function passed to the Worker.evaluateHandle() returns a Promise, then Worker.evaluateHandle() would wait for the promise to resolve and return its value.

Specified by:

evaluateHandle in interface Worker

Parameters:

pageFunction - JavaScript expression to be evaluated in the browser context. If the expression evaluates to a function, the function is automatically invoked.

arg - Optional argument to pass to expression.

url

public String url()

Specified by:

url in interface Worker

handleEvent

protected void handleEvent(String event,
 com.google.gson.JsonObject params)

Overrides:

handleEvent in class ChannelOwner