com.gargoylesoftware.htmlunit.html
Class HtmlScript

java.lang.Object
  com.gargoylesoftware.htmlunit.html.DomNode
      com.gargoylesoftware.htmlunit.html.DomNamespaceNode
          com.gargoylesoftware.htmlunit.html.DomElement
              com.gargoylesoftware.htmlunit.html.HtmlElement
                  com.gargoylesoftware.htmlunit.html.HtmlScript

All Implemented Interfaces:

Serializable, Cloneable, Element, Node

public class HtmlScript
extends HtmlElement

Wrapper for the HTML element "script".
When a script tag references an external script (with attribute src) it gets executed when the node is added to the DOM tree. When the script code is nested, it gets executed when the text node containing the script is added to the HtmlScript.
The ScriptFilter feature of NekoHtml can't be used because it doesn't allow immediate access to the DOM (i.e. document.write("<span id='mySpan'/>"); document.getElementById("mySpan").tagName; can't work with a filter).

Version:

$Revision: 5876 $

Author:

Mike Bowler, Christian Sell, Marc Guillemot, David K. Taylor, Ahmed Ashour, Daniel Gredler, Dmitri Zoubkov, Sudhan Moghe

See Also:

DOM Level 1, DOM Level 2, Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.gargoylesoftware.htmlunit.html.HtmlElement

HtmlElement.ChildElementsIterator

Nested classes/interfaces inherited from class com.gargoylesoftware.htmlunit.html.DomNode

DomNode.ChildIterator, DomNode.DescendantElementsIterator<T extends DomNode>

Field Summary

static String

TAG_NAME The HTML tag represented by this element.

Fields inherited from class com.gargoylesoftware.htmlunit.html.HtmlElement

TAB_INDEX_OUT_OF_BOUNDS

Fields inherited from class com.gargoylesoftware.htmlunit.html.DomElement

ATTRIBUTE_NOT_DEFINED, ATTRIBUTE_VALUE_EMPTY

Fields inherited from class com.gargoylesoftware.htmlunit.html.DomNode

AS_TEXT_BLANK, AS_TEXT_BLOCK_SEPARATOR, AS_TEXT_NEW_LINE, AS_TEXT_TAB, PROPERTY_ELEMENT, READY_STATE_COMPLETE, READY_STATE_INTERACTIVE, READY_STATE_LOADED, READY_STATE_LOADING, READY_STATE_UNINITIALIZED

Fields inherited from interface org.w3c.dom.Node

ATTRIBUTE_NODE, CDATA_SECTION_NODE, COMMENT_NODE, DOCUMENT_FRAGMENT_NODE, DOCUMENT_NODE, DOCUMENT_POSITION_CONTAINED_BY, DOCUMENT_POSITION_CONTAINS, DOCUMENT_POSITION_DISCONNECTED, DOCUMENT_POSITION_FOLLOWING, DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC, DOCUMENT_POSITION_PRECEDING, DOCUMENT_TYPE_NODE, ELEMENT_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, NOTATION_NODE, PROCESSING_INSTRUCTION_NODE, TEXT_NODE

Method Summary

String	asText() Returns a textual representation of this element that represents what would be visible to the user if this page was shown in a web browser.
String	getCharsetAttribute() Returns the value of the attribute "charset".
String	getDeferAttribute() Returns the value of the attribute "defer".
String	getEventAttribute() Returns the value of the attribute "event".
String	getHtmlForAttribute() Returns the value of the attribute "for".
String	getLanguageAttribute() Returns the value of the attribute "language".
String	getSrcAttribute() Returns the value of the attribute "src".
String	getTypeAttribute() Returns the value of the attribute "type".
protected boolean	isDeferred() Returns true if this script is deferred.
protected boolean	isEmptyXmlTagExpanded() Indicates if a node without children should be written in expanded form as XML (i.e.
boolean	mayBeDisplayed() Returns true if nodes of this type can ever be displayed, false otherwise.
protected void	onAllChildrenAddedToPage(boolean postponed) Executes the onreadystatechange handler when simulating IE, as well as executing the script itself, if necessary.
protected void	printChildrenAsXml(String indent, PrintWriter printWriter) Recursively writes the XML data for the node tree starting at node.
protected void	setAndExecuteReadyState(String state) Sets the readyState to the specified state and executes the onreadystatechange handler when simulating IE.
void	setAttributeNS(String namespaceURI, String qualifiedName, String attributeValue) If setting the src attribute, this method executes the new JavaScript if necessary (behavior varies by browser version).

Methods inherited from class com.gargoylesoftware.htmlunit.html.HtmlElement

addHtmlAttributeChangeListener, appendChildIfNoneExists, blur, checkChildHierarchy, click, click, click, dblClick, dblClick, doClickAction, doType, fireEvent, fireEvent, fireHtmlAttributeAdded, fireHtmlAttributeRemoved, fireHtmlAttributeReplaced, focus, getCanonicalXPath, getChildElements, getElementById, getElementsByAttribute, getEnclosingElement, getEnclosingForm, getEnclosingFormOrDie, getEventTargetElement, getHtmlElementsByTagName, getHtmlElementsByTagNames, getId, getLangAttribute, getNodeName, getOnClickAttribute, getOnDblClickAttribute, getOneHtmlElementByAttribute, getOnKeyDownAttribute, getOnKeyPressAttribute, getOnKeyUpAttribute, getOnMouseDownAttribute, getOnMouseMoveAttribute, getOnMouseOutAttribute, getOnMouseOverAttribute, getOnMouseUpAttribute, getTabIndex, getTextDirectionAttribute, getXmlLangAttribute, hasEventHandlers, hasHtmlElementWithId, isAttributeCaseSensitive, isStateUpdateFirst, isSubmittableByEnter, mouseDown, mouseDown, mouseMove, mouseMove, mouseOut, mouseOut, mouseOver, mouseOver, mouseUp, mouseUp, preventDefault, removeAttribute, removeChild, removeEventHandler, removeHtmlAttributeChangeListener, rightClick, rightClick, setEventHandler, setEventHandler, setId, toString, type, type, type, type

Methods inherited from class com.gargoylesoftware.htmlunit.html.DomElement

cloneNode, getAttribute, getAttributeNode, getAttributeNodeNS, getAttributeNS, getAttributes, getAttributesMap, getElementsByTagName, getElementsByTagNameNS, getNodeType, getSchemaTypeInfo, getTagName, hasAttribute, hasAttributeNS, hasAttributes, namespaces, printOpeningTagContentAsXml, printXml, removeAttributeNode, removeAttributeNS, setAttribute, setAttributeNode, setAttributeNodeNS, setIdAttribute, setIdAttributeNode, setIdAttributeNS

Methods inherited from class com.gargoylesoftware.htmlunit.html.DomNamespaceNode

getLocalName, getNamespaceURI, getPrefix, getQualifiedName, setPrefix

Methods inherited from class com.gargoylesoftware.htmlunit.html.DomNode

addDomChangeListener, appendChild, asXml, compareDocumentPosition, fireNodeAdded, fireNodeDeleted, getAllHtmlChildElements, getAncestors, getBaseURI, getByXPath, getChildNodes, getChildren, getDescendants, getEndColumnNumber, getEndLineNumber, getFeature, getFirstByXPath, getFirstChild, getHtmlElementDescendants, getIndex, getLastChild, getNextSibling, getNodeValue, getOwnerDocument, getPage, getParentNode, getPreviousSibling, getReadyState, getScriptObject, getStartColumnNumber, getStartLineNumber, getTextContent, getUserData, hasChildNodes, insertBefore, insertBefore, isAncestorOf, isAncestorOfAny, isBlock, isDefaultNamespace, isDisplayed, isEqualNode, isSameNode, isSupported, isTrimmedText, lookupNamespaceURI, lookupPrefix, normalize, notifyIncorrectness, onAddedToPage, remove, removeAllChildren, removeChild, removeDomChangeListener, replace, replaceChild, setNextSibling, setNodeValue, setParentNode, setPreviousSibling, setReadyState, setScriptObject, setTextContent, setUserData

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.w3c.dom.Node

appendChild, compareDocumentPosition, getBaseURI, getChildNodes, getFeature, getFirstChild, getLastChild, getLocalName, getNamespaceURI, getNextSibling, getNodeValue, getOwnerDocument, getParentNode, getPrefix, getPreviousSibling, getTextContent, getUserData, hasChildNodes, insertBefore, isDefaultNamespace, isEqualNode, isSameNode, isSupported, lookupNamespaceURI, lookupPrefix, normalize, removeChild, replaceChild, setNodeValue, setPrefix, setTextContent, setUserData

Field Detail

TAG_NAME

public static final String TAG_NAME

The HTML tag represented by this element.

See Also:

Constant Field Values

Method Detail

getCharsetAttribute

public final String getCharsetAttribute()

Returns the value of the attribute "charset". Refer to the HTML 4.01 documentation for details on the use of this attribute.

Returns:

the value of the attribute "charset" or an empty string if that attribute isn't defined.

getTypeAttribute

public final String getTypeAttribute()

Returns the value of the attribute "type". Refer to the HTML 4.01 documentation for details on the use of this attribute.

Returns:

the value of the attribute "type" or an empty string if that attribute isn't defined.

getLanguageAttribute

public final String getLanguageAttribute()

Returns the value of the attribute "language". Refer to the HTML 4.01 documentation for details on the use of this attribute.

Returns:

the value of the attribute "language" or an empty string if that attribute isn't defined.

getSrcAttribute

public final String getSrcAttribute()

Returns the value of the attribute "src". Refer to the HTML 4.01 documentation for details on the use of this attribute.

Returns:

the value of the attribute "src" or an empty string if that attribute isn't defined.

getEventAttribute

public final String getEventAttribute()

Returns the value of the attribute "event".

Returns:

the value of the attribute "event"

getHtmlForAttribute

public final String getHtmlForAttribute()

Returns the value of the attribute "for".

Returns:

the value of the attribute "for"

getDeferAttribute

public final String getDeferAttribute()

Returns the value of the attribute "defer". Refer to the HTML 4.01 documentation for details on the use of this attribute.

Returns:

the value of the attribute "defer" or an empty string if that attribute isn't defined.

isDeferred

protected boolean isDeferred()

Returns true if this script is deferred.

Returns:

true if this script is deferred

mayBeDisplayed

public boolean mayBeDisplayed()

Returns true if nodes of this type can ever be displayed, false otherwise. Examples of nodes that can never be displayed are <head>, <meta>, <script>, etc.

Overrides:

mayBeDisplayed in class DomNode

Returns:

true if nodes of this type can ever be displayed, false otherwise

See Also:

DomNode.isDisplayed()

setAttributeNS

public void setAttributeNS(String namespaceURI,
                           String qualifiedName,
                           String attributeValue)

If setting the src attribute, this method executes the new JavaScript if necessary (behavior varies by browser version). Sets the value of the specified attribute. This method may be overridden by subclasses which are interested in specific attribute value changes, but such methods must invoke super.setAttributeValue(), and should consider the value of the cloning parameter when deciding whether or not to execute custom logic.

Specified by:

setAttributeNS in interface Element

Overrides:

setAttributeNS in class HtmlElement

Parameters:

namespaceURI - the URI that identifies an XML namespace

qualifiedName - the qualified name of the attribute

attributeValue - the value of the attribute

onAllChildrenAddedToPage

protected void onAllChildrenAddedToPage(boolean postponed)

Executes the onreadystatechange handler when simulating IE, as well as executing the script itself, if necessary. Lifecycle method invoked after a node and all its children have been added to a page, during parsing of the HTML. Intended to be overridden by nodes which need to perform custom logic after they and all their child nodes have been processed by the HTML parser. This method is not recursive, and the default implementation is empty, so there is no need to call super.onAllChildrenAddedToPage() if you implement this method.

Overrides:

onAllChildrenAddedToPage in class DomNode

Parameters:

postponed - whether to use PostponedAction or no

setAndExecuteReadyState

protected void setAndExecuteReadyState(String state)

Sets the readyState to the specified state and executes the onreadystatechange handler when simulating IE.

Parameters:

state - this script ready state

asText

public String asText()

Description copied from class: DomNode

Returns a textual representation of this element that represents what would be visible to the user if this page was shown in a web browser. For example, a single-selection select element would return the currently selected value as text.

Overrides:

asText in class DomNode

Returns:

an empty string as the content of script is not visible by itself

See Also:

DomNode.asText()

isEmptyXmlTagExpanded

protected boolean isEmptyXmlTagExpanded()

Indicates if a node without children should be written in expanded form as XML (i.e. with closing tag rather than with "/>")

Overrides:

isEmptyXmlTagExpanded in class DomElement

Returns:

true to make generated XML readable as HTML

printChildrenAsXml

protected void printChildrenAsXml(String indent,
                                  PrintWriter printWriter)

Recursively writes the XML data for the node tree starting at node.

Overrides:

printChildrenAsXml in class DomNode

Parameters:

indent - white space to indent child nodes

printWriter - writer where child nodes are written