com.gargoylesoftware.htmlunit
Class WebClient

java.lang.Object
  extended by com.gargoylesoftware.htmlunit.WebClient
All Implemented Interfaces:
Serializable

public class WebClient
extends Object
implements Serializable

The main starting point in HtmlUnit: this class simulates a web browser.

A standard usage of HtmlUnit will start with using the getPage(String) method (or getPage(URL)) to load a first Page and will continue with further processing on this page depending on its type.

Example:

final WebClient webClient = new WebClient();
final HtmlPage startPage = webClient.getPage("http://htmlunit.sf.net");
assertEquals("HtmlUnit - Welcome to HtmlUnit", startPage.getTitleText());

Note: a WebClient instance is not thread safe. It is intended to be used from a single thread.

Version:
$Revision: 9017 $
Author:
Mike Bowler, Mike J. Bresnahan, Dominique Broeglin, Noboru Sinohara, Chen Jun, David K. Taylor, Christian Sell, Ben Curren, Marc Guillemot, Chris Erskine, Daniel Gredler, Sergey Gorelkin, Hans Donner, Paul King, Ahmed Ashour, Bruce Chapman, Sudhan Moghe, Martin Tamme, Amit Manjhi, Nicolas Belisle, Ronald Brill, Frank Danek
See Also:
Serialized Form

Field Summary
static String ABOUT_BLANK
          "about:blank".
static URL URL_ABOUT_BLANK
          URL for "about:blank".
 
Constructor Summary
WebClient()
          Creates a web client instance using the browser version returned by BrowserVersion.getDefault().
WebClient(BrowserVersion browserVersion)
          Creates a web client instance using the specified BrowserVersion.
WebClient(BrowserVersion browserVersion, String proxyHost, int proxyPort)
          Creates an instance that will use the specified BrowserVersion and proxy server.
 
Method Summary
 void addRequestHeader(String name, String value)
          Adds a header which will be sent with EVERY request from this client.
 void addWebWindowListener(WebWindowListener listener)
          Adds a listener for WebWindowEvents.
 void closeAllWindows()
          Closes all opened windows, stopping all background JavaScript processing.
 boolean containsWebWindow(WebWindow webWindow)
          INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Returns true if the list of WebWindows contains the provided one.
 void deregisterWebWindow(WebWindow webWindow)
          INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Removes a window from the list of available windows.
 void download(WebWindow requestingWindow, String target, WebRequest request, boolean isHashJump, String description)
          INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Perform the downloads and stores it for loading later into a window.
static URL expandUrl(URL baseUrl, String relativeUrl)
          Expands a relative URL relative to the specified base.
 Map<String,String> getActiveXObjectMap()
          Returns the active X object map for this webclient.
 AjaxController getAjaxController()
          Gets the current AJAX controller.
 AlertHandler getAlertHandler()
          Returns the alert handler for this webclient.
 AttachmentHandler getAttachmentHandler()
          Returns the current attachment handler.
 BrowserVersion getBrowserVersion()
          Returns the current browser version.
 Cache getCache()
          Gets the cache currently being used.
 ConfirmHandler getConfirmHandler()
          Returns the confirm handler.
 CookieManager getCookieManager()
          Returns the cookie manager used by this web client.
 CredentialsProvider getCredentialsProvider()
          Returns the credentials provider for this client instance.
 org.w3c.css.sac.ErrorHandler getCssErrorHandler()
          Returns the CSS error handler used by this web client when CSS problems are encountered.
 WebWindow getCurrentWindow()
          Returns the "current" window for this client.
 HTMLParserListener getHTMLParserListener()
          Gets the configured listener for messages generated by the HTML parser.
 IncorrectnessListener getIncorrectnessListener()
          Gets the current listener for encountered incorrectness (except HTML parsing messages that are handled by the HTML parser listener).
 com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine getJavaScriptEngine()
          This method is intended for testing only - use at your own risk.
 com.gargoylesoftware.htmlunit.javascript.JavaScriptErrorListener getJavaScriptErrorListener()
          Returns the javascript error listener for this webclient.
 long getJavaScriptTimeout()
          Returns the number of milliseconds that a script is allowed to execute before being terminated.
 MSXMLActiveXObjectFactory getMSXMLActiveXObjectFactory()
          Returns the MSXML ActiveX object factory (if supported).
 OnbeforeunloadHandler getOnbeforeunloadHandler()
          Returns the onbeforeunload handler for this webclient.
 WebClientOptions getOptions()
          Returns the options object of this WebClient.
<P extends Page>
P
getPage(String url)
          Convenient method to build an URL and load it into the current WebWindow as it would be done by getPage(WebWindow, WebRequest).
<P extends Page>
P
getPage(URL url)
          Convenient method to load a URL into the current top WebWindow as it would be done by getPage(WebWindow, WebRequest).
<P extends Page>
P
getPage(WebRequest request)
          Convenient method to load a web request into the current top WebWindow.
<P extends Page>
P
getPage(WebWindow opener, String target, WebRequest params)
          INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
<P extends Page>
P
getPage(WebWindow webWindow, WebRequest webRequest)
          Send a request to a server and return a Page that represents the response from the server.
 PageCreator getPageCreator()
          Returns the current page creator.
 PromptHandler getPromptHandler()
          Returns the prompt handler.
 RefreshHandler getRefreshHandler()
          Returns the current refresh handler.
 ScriptPreProcessor getScriptPreProcessor()
          Returns the script pre processor for this webclient.
 StatusHandler getStatusHandler()
          Returns the status handler for this webclient.
 StorageHolder getStorageHolder()
          Gets the holder for the different storages.
 List<TopLevelWindow> getTopLevelWindows()
          Returns an immutable list of open top level windows.
 WebConnection getWebConnection()
          Returns the object that will resolve all URL requests.
 WebConsole getWebConsole()
          Returns the WebConsole.
 WebWindow getWebWindowByName(String name)
          Returns the first WebWindow that matches the specified name.
 List<WebWindow> getWebWindows()
          Returns an immutable list of open web windows (whether they are top level windows or not).
 String guessContentType(File file)
          Tries to guess the content type of the file.
This utility could be located in an helper class but we can compare this functionality for instance with the "Helper Applications" settings of Mozilla and therefore see it as a property of the "browser".
 void initialize(Page newPage)
          INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Initializes a new page for JavaScript.
 void initialize(WebWindow webWindow)
          INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Initializes a new web window for JavaScript.
 void initializeEmptyWindow(WebWindow webWindow)
          INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Initializes a new empty window for JavaScript.
 void loadDownloadedResponses()
          INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Loads downloaded responses into the corresponding windows.
 WebResponse loadWebResponse(WebRequest webRequest)
          Loads a WebResponse from the server.
 Page loadWebResponseInto(WebResponse webResponse, WebWindow webWindow)
          Creates a page based on the specified response and inserts it into the specified window.
 DialogWindow openDialogWindow(URL url, WebWindow opener, Object dialogArguments)
          INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
 WebWindow openWindow(URL url, String windowName)
          Open a new window with the specified name.
 WebWindow openWindow(URL url, String windowName, WebWindow opener)
          Open a new window with the specified name.
 void printContentIfNecessary(WebResponse webResponse)
          INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
 void registerWebWindow(WebWindow webWindow)
          INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Adds a new window to the list of available windows.
 void removeRequestHeader(String name)
          Removes a header from being sent with EVERY request from this client.
 void removeWebWindowListener(WebWindowListener listener)
          Removes a listener for WebWindowEvents.
 void setActiveXObjectMap(Map<String,String> activeXObjectMap)
          Sets the active X object map for this webclient.
 void setAjaxController(AjaxController newValue)
          Sets the current AJAX controller.
 void setAlertHandler(AlertHandler alertHandler)
          Sets the alert handler for this webclient.
 void setAttachmentHandler(AttachmentHandler handler)
          Sets the attachment handler.
 void setCache(Cache cache)
          Sets the cache to use.
 void setConfirmHandler(ConfirmHandler handler)
          Sets the handler that will be executed when the JavaScript method Window.confirm() is called.
 void setCookieManager(CookieManager cookieManager)
          Sets the cookie manager used by this web client.
 void setCredentialsProvider(CredentialsProvider credentialsProvider)
          Sets the credentials provider that will provide authentication information when trying to access protected information on a web server.
 void setCssErrorHandler(org.w3c.css.sac.ErrorHandler cssErrorHandler)
          Sets the CSS error handler used by this web client when CSS problems are encountered.
 void setCurrentWindow(WebWindow window)
          Sets the "current" window for this client.
 void setHTMLParserListener(HTMLParserListener listener)
          Sets the listener for messages generated by the HTML parser.
 void setIncorrectnessListener(IncorrectnessListener listener)
          Returns the current HTML incorrectness listener.
 void setJavaScriptEngine(com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine engine)
          This method is intended for testing only - use at your own risk.
 void setJavaScriptErrorListener(com.gargoylesoftware.htmlunit.javascript.JavaScriptErrorListener javaScriptErrorListener)
          Sets the javascript error listener for this webclient.
 void setJavaScriptTimeout(long timeout)
          Sets the number of milliseconds that a script is allowed to execute before being terminated.
 void setOnbeforeunloadHandler(OnbeforeunloadHandler onbeforeunloadHandler)
          Sets the onbeforeunload handler for this webclient.
 void setPageCreator(PageCreator pageCreator)
          Sets the object that will be used to create pages.
 void setPromptHandler(PromptHandler handler)
          Sets the handler that will be executed when the JavaScript method Window.prompt() is called.
 void setRefreshHandler(RefreshHandler handler)
          Sets the handler to be used whenever a refresh is triggered.
 void setScriptPreProcessor(ScriptPreProcessor scriptPreProcessor)
          Sets the script pre processor for this webclient.
 void setStatusHandler(StatusHandler statusHandler)
          Sets the status handler for this webclient.
 void setWebConnection(WebConnection webConnection)
          Sets the object that will resolve all URL requests.
 void throwFailingHttpStatusCodeExceptionIfNecessary(WebResponse webResponse)
          INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
 int waitForBackgroundJavaScript(long timeoutMillis)
          Experimental API: May be changed in next release and may not yet work perfectly!
 int waitForBackgroundJavaScriptStartingBefore(long delayMillis)
          Experimental API: May be changed in next release and may not yet work perfectly!
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

ABOUT_BLANK

public static final String ABOUT_BLANK
"about:blank".

See Also:
Constant Field Values

URL_ABOUT_BLANK

public static final URL URL_ABOUT_BLANK
URL for "about:blank".

Constructor Detail

WebClient

public WebClient()
Creates a web client instance using the browser version returned by BrowserVersion.getDefault().


WebClient

public WebClient(BrowserVersion browserVersion)
Creates a web client instance using the specified BrowserVersion.

Parameters:
browserVersion - the browser version to simulate

WebClient

public WebClient(BrowserVersion browserVersion,
                 String proxyHost,
                 int proxyPort)
Creates an instance that will use the specified BrowserVersion and proxy server.

Parameters:
browserVersion - the browser version to simulate
proxyHost - the server that will act as proxy
proxyPort - the port to use on the proxy server
Method Detail

getWebConnection

public WebConnection getWebConnection()
Returns the object that will resolve all URL requests.

Returns:
the connection that will be used

setWebConnection

public void setWebConnection(WebConnection webConnection)
Sets the object that will resolve all URL requests.

Parameters:
webConnection - the new web connection

getPage

public <P extends Page> P getPage(WebWindow webWindow,
                                  WebRequest webRequest)
                       throws IOException,
                              FailingHttpStatusCodeException
Send a request to a server and return a Page that represents the response from the server. This page will be used to populate the provided window.

The returned Page will be created by the PageCreator configured by setPageCreator(PageCreator), if any.

The DefaultPageCreator will create a Page depending on the content type of the HTTP response, basically HtmlPage for HTML content, XmlPage for XML content, TextPage for other text content and UnexpectedPage for anything else.

Type Parameters:
P - the page type
Parameters:
webWindow - the WebWindow to load the result of the request into
webRequest - the web request
Returns:
the page returned by the server when the specified request was made in the specified window
Throws:
IOException - if an IO error occurs
FailingHttpStatusCodeException - if the server returns a failing status code AND the property WebClientOptions.setThrowExceptionOnFailingStatusCode(boolean) is set to true
See Also:
WebRequest

getPage

public <P extends Page> P getPage(WebWindow opener,
                                  String target,
                                  WebRequest params)
                       throws FailingHttpStatusCodeException,
                              IOException
INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.

Open a new web window and populate it with a page loaded by getPage(WebWindow,WebRequest)

Type Parameters:
P - the page type
Parameters:
opener - the web window that initiated the request
target - the name of the window to be opened (the name that will be passed into the JavaScript open() method)
params - any parameters
Returns:
the new page
Throws:
FailingHttpStatusCodeException - if the server returns a failing status code AND the property WebClientOptions.setThrowExceptionOnFailingStatusCode(boolean) is set to true.
IOException - if an IO problem occurs

getPage

public <P extends Page> P getPage(String url)
                       throws IOException,
                              FailingHttpStatusCodeException,
                              MalformedURLException
Convenient method to build an URL and load it into the current WebWindow as it would be done by getPage(WebWindow, WebRequest).

Type Parameters:
P - the page type
Parameters:
url - the URL of the new content
Returns:
the new page
Throws:
FailingHttpStatusCodeException - if the server returns a failing status code AND the property WebClientOptions.setThrowExceptionOnFailingStatusCode(boolean) is set to true.
IOException - if an IO problem occurs
MalformedURLException - if no URL can be created from the provided string

getPage

public <P extends Page> P getPage(URL url)
                       throws IOException,
                              FailingHttpStatusCodeException
Convenient method to load a URL into the current top WebWindow as it would be done by getPage(WebWindow, WebRequest).

Type Parameters:
P - the page type
Parameters:
url - the URL of the new content
Returns:
the new page
Throws:
FailingHttpStatusCodeException - if the server returns a failing status code AND the property WebClientOptions.setThrowExceptionOnFailingStatusCode(boolean) is set to true.
IOException - if an IO problem occurs

getPage

public <P extends Page> P getPage(WebRequest request)
                       throws IOException,
                              FailingHttpStatusCodeException
Convenient method to load a web request into the current top WebWindow.

Type Parameters:
P - the page type
Parameters:
request - the request parameters
Returns:
the new page
Throws:
FailingHttpStatusCodeException - if the server returns a failing status code AND the property WebClientOptions.setThrowExceptionOnFailingStatusCode(boolean) is set to true.
IOException - if an IO problem occurs
See Also:
getPage(WebWindow,WebRequest)

loadWebResponseInto

public Page loadWebResponseInto(WebResponse webResponse,
                                WebWindow webWindow)
                         throws IOException,
                                FailingHttpStatusCodeException

Creates a page based on the specified response and inserts it into the specified window. All page initialization and event notification is handled here.

Note that if the page created is an attachment page, and an AttachmentHandler has been registered with this client, the page is not loaded into the specified window; in this case, the page is loaded into a new window, and attachment handling is delegated to the registered AttachmentHandler.

Parameters:
webResponse - the response that will be used to create the new page
webWindow - the window that the new page will be placed within
Returns:
the newly created page
Throws:
IOException - if an IO error occurs
FailingHttpStatusCodeException - if the server returns a failing status code AND the property WebClientOptions.setThrowExceptionOnFailingStatusCode(boolean) is set to true
See Also:
setAttachmentHandler(AttachmentHandler)

printContentIfNecessary

public void printContentIfNecessary(WebResponse webResponse)
INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.

Logs the response's content if its status code indicates a request failure and WebClientOptions.getPrintContentOnFailingStatusCode() returns true.

Parameters:
webResponse - the response whose content may be logged

throwFailingHttpStatusCodeExceptionIfNecessary

public void throwFailingHttpStatusCodeExceptionIfNecessary(WebResponse webResponse)
INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.

Throws a FailingHttpStatusCodeException if the request's status code indicates a request failure and WebClientOptions.isThrowExceptionOnFailingStatusCode() returns true.

Parameters:
webResponse - the response which may trigger a FailingHttpStatusCodeException

addRequestHeader

public void addRequestHeader(String name,
                             String value)
Adds a header which will be sent with EVERY request from this client.

Parameters:
name - the name of the header to add
value - the value of the header to add
See Also:
removeRequestHeader(String)

removeRequestHeader

public void removeRequestHeader(String name)
Removes a header from being sent with EVERY request from this client.

Parameters:
name - the name of the header to remove
See Also:
addRequestHeader(java.lang.String, java.lang.String)

setCredentialsProvider

public void setCredentialsProvider(CredentialsProvider credentialsProvider)
Sets the credentials provider that will provide authentication information when trying to access protected information on a web server. This information is required when the server is using Basic HTTP authentication, NTLM authentication, or Digest authentication.

Parameters:
credentialsProvider - the new credentials provider to use to authenticate

getCredentialsProvider

public CredentialsProvider getCredentialsProvider()
Returns the credentials provider for this client instance. By default, this method returns an instance of DefaultCredentialsProvider.

Returns:
the credentials provider for this client instance

getJavaScriptEngine

public com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine getJavaScriptEngine()
This method is intended for testing only - use at your own risk.

Returns:
the current JavaScript engine (never null)

setJavaScriptEngine

public void setJavaScriptEngine(com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine engine)
This method is intended for testing only - use at your own risk.

Parameters:
engine - the new script engine to use

getCookieManager

public CookieManager getCookieManager()
Returns the cookie manager used by this web client.

Returns:
the cookie manager used by this web client

setCookieManager

public void setCookieManager(CookieManager cookieManager)
Sets the cookie manager used by this web client.

Parameters:
cookieManager - the cookie manager used by this web client

setAlertHandler

public void setAlertHandler(AlertHandler alertHandler)
Sets the alert handler for this webclient.

Parameters:
alertHandler - the new alerthandler or null if none is specified

getAlertHandler

public AlertHandler getAlertHandler()
Returns the alert handler for this webclient.

Returns:
the alert handler or null if one hasn't been set

setConfirmHandler

public void setConfirmHandler(ConfirmHandler handler)
Sets the handler that will be executed when the JavaScript method Window.confirm() is called.

Parameters:
handler - the new handler or null if no handler is to be used

getConfirmHandler

public ConfirmHandler getConfirmHandler()
Returns the confirm handler.

Returns:
the confirm handler or null if one hasn't been set

setPromptHandler

public void setPromptHandler(PromptHandler handler)
Sets the handler that will be executed when the JavaScript method Window.prompt() is called.

Parameters:
handler - the new handler or null if no handler is to be used

getPromptHandler

public PromptHandler getPromptHandler()
Returns the prompt handler.

Returns:
the prompt handler or null if one hasn't been set

setStatusHandler

public void setStatusHandler(StatusHandler statusHandler)
Sets the status handler for this webclient.

Parameters:
statusHandler - the new status handler or null if none is specified

getStatusHandler

public StatusHandler getStatusHandler()
Returns the status handler for this webclient.

Returns:
the status handler or null if one hasn't been set

setJavaScriptErrorListener

public void setJavaScriptErrorListener(com.gargoylesoftware.htmlunit.javascript.JavaScriptErrorListener javaScriptErrorListener)
Sets the javascript error listener for this webclient.

Parameters:
javaScriptErrorListener - the new javaScriptErrorHandler or null if none is specified

getJavaScriptErrorListener

public com.gargoylesoftware.htmlunit.javascript.JavaScriptErrorListener getJavaScriptErrorListener()
Returns the javascript error listener for this webclient.

Returns:
the javascript error listener or null if one hasn't been set

getBrowserVersion

public BrowserVersion getBrowserVersion()
Returns the current browser version.

Returns:
the current browser version

getCurrentWindow

public WebWindow getCurrentWindow()
Returns the "current" window for this client. This window (or its top window) will be used when getPage(...) is called without specifying a window.

Returns:
the "current" window for this client

setCurrentWindow

public void setCurrentWindow(WebWindow window)
Sets the "current" window for this client. This is the window that will be used when getPage(...) is called without specifying a window.

Parameters:
window - the new "current" window for this client

addWebWindowListener

public void addWebWindowListener(WebWindowListener listener)
Adds a listener for WebWindowEvents. All events from all windows associated with this client will be sent to the specified listener.

Parameters:
listener - a listener

removeWebWindowListener

public void removeWebWindowListener(WebWindowListener listener)
Removes a listener for WebWindowEvents.

Parameters:
listener - a listener

openWindow

public WebWindow openWindow(URL url,
                            String windowName)
Open a new window with the specified name. If the URL is non-null then attempt to load a page from that location and put it in the new window.

Parameters:
url - the URL to load content from or null if no content is to be loaded
windowName - the name of the new window
Returns:
the new window

openWindow

public WebWindow openWindow(URL url,
                            String windowName,
                            WebWindow opener)
Open a new window with the specified name. If the URL is non-null then attempt to load a page from that location and put it in the new window.

Parameters:
url - the URL to load content from or null if no content is to be loaded
windowName - the name of the new window
opener - the web window that is calling openWindow
Returns:
the new window

openDialogWindow

public DialogWindow openDialogWindow(URL url,
                                     WebWindow opener,
                                     Object dialogArguments)
                              throws IOException

INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.

Opens a new dialog window.

Parameters:
url - the URL of the document to load and display
opener - the web window that is opening the dialog
dialogArguments - the object to make available inside the dialog via window.dialogArguments
Returns:
the new dialog window
Throws:
IOException - if there is an IO error

setPageCreator

public void setPageCreator(PageCreator pageCreator)
Sets the object that will be used to create pages. Set this if you want to customize the type of page that is returned for a given content type.

Parameters:
pageCreator - the new page creator

getPageCreator

public PageCreator getPageCreator()
Returns the current page creator.

Returns:
the page creator

getWebWindowByName

public WebWindow getWebWindowByName(String name)
                             throws WebWindowNotFoundException
Returns the first WebWindow that matches the specified name.

Parameters:
name - the name to search for
Returns:
the WebWindow with the specified name
Throws:
WebWindowNotFoundException - if the WebWindow can't be found
See Also:
getWebWindows(), getTopLevelWindows()

initialize

public void initialize(WebWindow webWindow)
INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Initializes a new web window for JavaScript.

Parameters:
webWindow - the new WebWindow

initialize

public void initialize(Page newPage)
INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Initializes a new page for JavaScript.

Parameters:
newPage - the new page

initializeEmptyWindow

public void initializeEmptyWindow(WebWindow webWindow)
INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Initializes a new empty window for JavaScript.

Parameters:
webWindow - the new WebWindow

registerWebWindow

public void registerWebWindow(WebWindow webWindow)
INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Adds a new window to the list of available windows.

Parameters:
webWindow - the new WebWindow

deregisterWebWindow

public void deregisterWebWindow(WebWindow webWindow)
INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Removes a window from the list of available windows.

Parameters:
webWindow - the window to remove

expandUrl

public static URL expandUrl(URL baseUrl,
                            String relativeUrl)
                     throws MalformedURLException
Expands a relative URL relative to the specified base. In most situations this is the same as new URL(baseUrl, relativeUrl) but there are some cases that URL doesn't handle correctly. See RFC1808 regarding Relative Uniform Resource Locators for more information.

Parameters:
baseUrl - the base URL
relativeUrl - the relative URL
Returns:
the expansion of the specified base and relative URLs
Throws:
MalformedURLException - if an error occurred when creating a URL object

guessContentType

public String guessContentType(File file)
Tries to guess the content type of the file.
This utility could be located in an helper class but we can compare this functionality for instance with the "Helper Applications" settings of Mozilla and therefore see it as a property of the "browser".

Parameters:
file - the file
Returns:
"application/octet-stream" if nothing could be guessed

loadWebResponse

public WebResponse loadWebResponse(WebRequest webRequest)
                            throws IOException
Loads a WebResponse from the server.

Parameters:
webRequest - the request
Returns:
the WebResponse
Throws:
IOException - if an IO problem occurs

getWebWindows

public List<WebWindow> getWebWindows()
Returns an immutable list of open web windows (whether they are top level windows or not). This is a snapshot; future changes are not reflected by this list.

Returns:
an immutable list of open web windows (whether they are top level windows or not)
See Also:
getWebWindowByName(String), getTopLevelWindows()

containsWebWindow

public boolean containsWebWindow(WebWindow webWindow)
INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Returns true if the list of WebWindows contains the provided one. This method is there to improve the performance of some internal checks because calling getWebWindows().contains(.) creates some objects without any need.

Parameters:
webWindow - the window to check
Returns:
true or false

getTopLevelWindows

public List<TopLevelWindow> getTopLevelWindows()
Returns an immutable list of open top level windows. This is a snapshot; future changes are not reflected by this list.

Returns:
an immutable list of open top level windows
See Also:
getWebWindowByName(String), getWebWindows()

setRefreshHandler

public void setRefreshHandler(RefreshHandler handler)
Sets the handler to be used whenever a refresh is triggered. Refer to the documentation for RefreshHandler for more details.

Parameters:
handler - the new handler

getRefreshHandler

public RefreshHandler getRefreshHandler()
Returns the current refresh handler. The default refresh handler is a NiceRefreshHandler(2) (since HtmlUnit-2.12).

Returns:
the current RefreshHandler

setScriptPreProcessor

public void setScriptPreProcessor(ScriptPreProcessor scriptPreProcessor)
Sets the script pre processor for this webclient.

Parameters:
scriptPreProcessor - the new preprocessor or null if none is specified

getScriptPreProcessor

public ScriptPreProcessor getScriptPreProcessor()
Returns the script pre processor for this webclient.

Returns:
the pre processor or null of one hasn't been set

setActiveXObjectMap

public void setActiveXObjectMap(Map<String,String> activeXObjectMap)
Sets the active X object map for this webclient. The Map is used to map the string passed into the ActiveXObject constructor to a java class name. Therefore you can emulate ActiveXObjects in a web page's JavaScript by mapping the object name to a java class to emulate the active X object.

Parameters:
activeXObjectMap - the new preprocessor or null if none is specified

getActiveXObjectMap

public Map<String,String> getActiveXObjectMap()
Returns the active X object map for this webclient.

Returns:
the active X object map

getMSXMLActiveXObjectFactory

public MSXMLActiveXObjectFactory getMSXMLActiveXObjectFactory()
Returns the MSXML ActiveX object factory (if supported).

Returns:
the msxmlActiveXObjectFactory

setHTMLParserListener

public void setHTMLParserListener(HTMLParserListener listener)
Sets the listener for messages generated by the HTML parser.

Parameters:
listener - the new listener, null if messages should be totally ignored

getHTMLParserListener

public HTMLParserListener getHTMLParserListener()
Gets the configured listener for messages generated by the HTML parser.

Returns:
null if no listener is defined (default value)

getCssErrorHandler

public org.w3c.css.sac.ErrorHandler getCssErrorHandler()
Returns the CSS error handler used by this web client when CSS problems are encountered.

Returns:
the CSS error handler used by this web client when CSS problems are encountered
See Also:
DefaultCssErrorHandler, SilentCssErrorHandler

setCssErrorHandler

public void setCssErrorHandler(org.w3c.css.sac.ErrorHandler cssErrorHandler)
Sets the CSS error handler used by this web client when CSS problems are encountered.

Parameters:
cssErrorHandler - the CSS error handler used by this web client when CSS problems are encountered
See Also:
DefaultCssErrorHandler, SilentCssErrorHandler

setJavaScriptTimeout

public 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

public 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

getIncorrectnessListener

public IncorrectnessListener getIncorrectnessListener()
Gets the current listener for encountered incorrectness (except HTML parsing messages that are handled by the HTML parser listener). Default value is an instance of IncorrectnessListenerImpl.

Returns:
the current listener (not null)

setIncorrectnessListener

public void setIncorrectnessListener(IncorrectnessListener listener)
Returns the current HTML incorrectness listener.

Parameters:
listener - the new value (not null)

getWebConsole

public WebConsole getWebConsole()
Returns the WebConsole.

Returns:
the web console

getAjaxController

public AjaxController getAjaxController()
Gets the current AJAX controller.

Returns:
the controller

setAjaxController

public void setAjaxController(AjaxController newValue)
Sets the current AJAX controller.

Parameters:
newValue - the controller

setAttachmentHandler

public void setAttachmentHandler(AttachmentHandler handler)
Sets the attachment handler.

Parameters:
handler - the new attachment handler

getAttachmentHandler

public AttachmentHandler getAttachmentHandler()
Returns the current attachment handler.

Returns:
the current attachment handler

setOnbeforeunloadHandler

public void setOnbeforeunloadHandler(OnbeforeunloadHandler onbeforeunloadHandler)
Sets the onbeforeunload handler for this webclient.

Parameters:
onbeforeunloadHandler - the new onbeforeunloadHandler or null if none is specified

getOnbeforeunloadHandler

public OnbeforeunloadHandler getOnbeforeunloadHandler()
Returns the onbeforeunload handler for this webclient.

Returns:
the onbeforeunload handler or null if one hasn't been set

getCache

public Cache getCache()
Gets the cache currently being used.

Returns:
the cache (may not be null)

setCache

public void setCache(Cache cache)
Sets the cache to use.

Parameters:
cache - the new cache (must not be null)

closeAllWindows

public void closeAllWindows()
Closes all opened windows, stopping all background JavaScript processing.


waitForBackgroundJavaScript

public int waitForBackgroundJavaScript(long timeoutMillis)

Experimental API: May be changed in next release and may not yet work perfectly!

This method blocks until all background JavaScript tasks have finished executing. Background JavaScript tasks are JavaScript tasks scheduled for execution via window.setTimeout, window.setInterval or asynchronous XMLHttpRequest.

If a job is scheduled to begin executing after (now + timeoutMillis), this method will wait for timeoutMillis milliseconds and then return a value greater than 0. This method will never block longer than timeoutMillis milliseconds.

Use this method instead of waitForBackgroundJavaScriptStartingBefore(long) if you don't know when your background JavaScript is supposed to start executing, but you're fairly sure that you know how long it should take to finish executing.

Parameters:
timeoutMillis - the maximum amount of time to wait (in milliseconds)
Returns:
the number of background JavaScript jobs still executing or waiting to be executed when this method returns; will be 0 if there are no jobs left to execute

waitForBackgroundJavaScriptStartingBefore

public int waitForBackgroundJavaScriptStartingBefore(long delayMillis)

Experimental API: May be changed in next release and may not yet work perfectly!

This method blocks until all background JavaScript tasks scheduled to start executing before (now + delayMillis) have finished executing. Background JavaScript tasks are JavaScript tasks scheduled for execution via window.setTimeout, window.setInterval or asynchronous XMLHttpRequest.

If there is no background JavaScript task currently executing, and there is no background JavaScript task scheduled to start executing within the specified time, this method returns immediately -- even if there are tasks scheduled to be executed after (now + delayMillis).

Note that the total time spent executing a background JavaScript task is never known ahead of time, so this method makes no guarantees as to how long it will block.

Use this method instead of waitForBackgroundJavaScript(long) if you know roughly when your background JavaScript is supposed to start executing, but you're not necessarily sure how long it will take to execute.

Parameters:
delayMillis - the delay which determines the background tasks to wait for (in milliseconds)
Returns:
the number of background JavaScript jobs still executing or waiting to be executed when this method returns; will be 0 if there are no jobs left to execute

download

public void download(WebWindow requestingWindow,
                     String target,
                     WebRequest request,
                     boolean isHashJump,
                     String description)
INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Perform the downloads and stores it for loading later into a window. In the future downloads should be performed in parallel in separated threads. TODO: refactor it before next release.

Parameters:
requestingWindow - the window from which the request comes
target - the name of the target window
request - the request to perform
isHashJump - in at least one case (anchor url is '#') it is not possible to decide that this is only a hash jump; in this case you can provide true here; otherwise use false
description - information about the origin of the request. Useful for debugging.

loadDownloadedResponses

public void loadDownloadedResponses()
                             throws FailingHttpStatusCodeException,
                                    IOException
INTERNAL API - SUBJECT TO CHANGE AT ANY TIME - USE AT YOUR OWN RISK.
Loads downloaded responses into the corresponding windows. TODO: refactor it before next release.

Throws:
IOException - in case of exception
FailingHttpStatusCodeException - in case of exception

getOptions

public WebClientOptions getOptions()
Returns the options object of this WebClient.

Returns:
the options object

getStorageHolder

public StorageHolder getStorageHolder()
Gets the holder for the different storages.

Experimental API: May be changed in next release!

Returns:
the holder


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