org.htmlunit.javascript

Interface AbstractJavaScriptEngine<SCRIPT>

Type Parameters:

SCRIPT - the script type

All Known Implementing Classes:

JavaScriptEngine

public interface AbstractJavaScriptEngine<SCRIPT>

An interface for JavaScriptEngine.

Author:

Mike Bowler, Chen Jun, David K. Taylor, Chris Erskine, Ben Curren, David D. Kilzer, Marc Guillemot, Daniel Gredler, Ahmed Ashour, Amit Manjhi, Ronald Brill, Frank Danek

Method Summary

Modifier and Type	Method and Description
void	addPostponedAction(PostponedAction action) Adds an action that should be executed first when the script currently being executed has finished.
SCRIPT	compile(HtmlPage owningPage, org.htmlunit.corejs.javascript.Scriptable scope, String sourceCode, String sourceName, int startLine) Compiles the specified JavaScript code in the context of a given scope.
Object	execute(HtmlPage page, org.htmlunit.corejs.javascript.Scriptable scope, SCRIPT script) Executes the specified JavaScript code in the context of a given page.
Object	execute(HtmlPage page, org.htmlunit.corejs.javascript.Scriptable scope, String sourceCode, String sourceName, int startLine) Executes the specified JavaScript code in the context of a given page.
HtmlUnitContextFactory	getContextFactory()
JavaScriptConfiguration	getJavaScriptConfiguration() Gets the associated configuration.
long	getJavaScriptTimeout() Returns the number of milliseconds that a script is allowed to execute before being terminated.
void	holdPosponedActions() INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
void	initialize(WebWindow webWindow, Page page) Performs initialization for the given webWindow and page.
boolean	isScriptRunning() Indicates if JavaScript is running in current thread.
void	prepareShutdown() Disable starting of new js threads.
void	processPostponedActions() INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
void	registerWindowAndMaybeStartEventLoop(WebWindow webWindow) Register WebWindow with the JavaScriptExecutor.
void	setJavaScriptTimeout(long timeout) Sets the number of milliseconds that a script is allowed to execute before being terminated.
void	shutdown() Shutdown the JavaScriptEngine.

Method Detail

getJavaScriptConfiguration

JavaScriptConfiguration getJavaScriptConfiguration()

Gets the associated configuration.

Returns:

the configuration

addPostponedAction

void addPostponedAction(PostponedAction action)

Adds an action that should be executed first when the script currently being executed has finished.

Parameters:

action - the action

processPostponedActions

void processPostponedActions()

INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Process postponed actions, if any.

registerWindowAndMaybeStartEventLoop

void registerWindowAndMaybeStartEventLoop(WebWindow webWindow)

Register WebWindow with the JavaScriptExecutor.

Parameters:

webWindow - the WebWindow to be registered.

initialize

void initialize(WebWindow webWindow,
                Page page)

Performs initialization for the given webWindow and page.

Parameters:

webWindow - the web window to initialize for

page - the page that will become the enclosing page

setJavaScriptTimeout

void setJavaScriptTimeout(long timeout)

Sets the number of milliseconds that a script is allowed to execute before being terminated. A value of 0 or less means no timeout.

Parameters:

timeout - the timeout value, in milliseconds

getJavaScriptTimeout

long getJavaScriptTimeout()

Returns the number of milliseconds that a script is allowed to execute before being terminated. A value of 0 or less means no timeout.

Returns:

the timeout value, in milliseconds

prepareShutdown

void prepareShutdown()

Disable starting of new js threads.

shutdown

void shutdown()

Shutdown the JavaScriptEngine.

isScriptRunning

boolean isScriptRunning()

Indicates if JavaScript is running in current thread. This allows code to know if their own evaluation has been triggered by some JS code.

Returns:

true if JavaScript is running

holdPosponedActions

void holdPosponedActions()

INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Indicates that no postponed action should be executed.

compile

SCRIPT compile(HtmlPage owningPage,
               org.htmlunit.corejs.javascript.Scriptable scope,
               String sourceCode,
               String sourceName,
               int startLine)

Compiles the specified JavaScript code in the context of a given scope.

Parameters:

owningPage - the page from which the code started

scope - the scope in which to execute the javascript code

sourceCode - the JavaScript code to execute

sourceName - the name that will be displayed on error conditions

startLine - the line at which the script source starts

Returns:

the result of executing the specified code

execute

Object execute(HtmlPage page,
               org.htmlunit.corejs.javascript.Scriptable scope,
               SCRIPT script)

Executes the specified JavaScript code in the context of a given page.

Parameters:

page - the page that the code will execute within

scope - the scope in which to execute

script - the script to execute

Returns:

the result of executing the specified code

execute

Object execute(HtmlPage page,
               org.htmlunit.corejs.javascript.Scriptable scope,
               String sourceCode,
               String sourceName,
               int startLine)

Executes the specified JavaScript code in the context of a given page.

Parameters:

page - the page that the code will execute within

scope - the scope in which to execute

sourceCode - the JavaScript code to execute

sourceName - the name that will be displayed on error conditions

startLine - the line at which the script source starts

Returns:

the result of executing the specified code

getContextFactory

HtmlUnitContextFactory getContextFactory()

Returns:

this JavaScript engine's HtmlUnitContextFactory