Class KeySensorObject

java.lang.Object
org.web3d.x3d.jsail.X3DConcreteElement
org.web3d.x3d.jsail.X3DConcreteNode
org.web3d.x3d.jsail.KeyDeviceSensor.KeySensorObject
All Implemented Interfaces:
X3DChildNode, X3DNode, X3DSensorNode, KeySensor, X3DKeyDeviceSensorNode

public class KeySensorObject
extends X3DConcreteNode
implements KeySensor
KeySensor generates events as the user presses keys on the keyboard.

X3D node tooltip: [X3DKeyDeviceSensorNode] KeySensor generates events as the user presses keys on the keyboard. Browser support includes the notion of "keyboard focus".
Package hint: This org.web3d.x3d.jsail concrete class is used for implementing a standalone X3D object as a Plain Old Java Object (POJO). If you are writing Java code for use inside an X3D Script node, compile separate code using only the org.web3d.x3d.sai package instead.
See Also:
X3D Abstract Specification: KeySensor, X3D Tooltips: KeySensor, X3D Scene Authoring Hints
  • Field Details

  • Constructor Details

    • KeySensorObject

      public KeySensorObject()
      Constructor for KeySensorObject to initialize member variables with default values.
    • KeySensorObject

      public KeySensorObject​(java.lang.String DEFlabel)
      Utility constructor that assigns DEF label after initializing member variables with default values.
      Parameters:
      DEFlabel - unique DEF name for this X3D node
  • Method Details

    • getElementName

      public final java.lang.String getElementName()
      Provides name of this element: KeySensor
      Specified by:
      getElementName in class X3DConcreteElement
      Returns:
      name of this element
    • getComponent

      public final java.lang.String getComponent()
      Defines X3D component for the KeySensor element: KeyDeviceSensor
      Specified by:
      getComponent in class X3DConcreteElement
      Returns:
      X3D component for this element
    • getComponentLevel

      public final int getComponentLevel()
      Provides default X3D component level for this element: 1
      Specified by:
      getComponentLevel in class X3DConcreteElement
      Returns:
      default X3D component level for this element
    • getFieldType

      public java.lang.String getFieldType​(java.lang.String fieldName)
      Indicate type corresponding to given fieldName.
      Specified by:
      getFieldType in class X3DConcreteElement
      Parameters:
      fieldName - name of field in this X3D node
      Returns:
      X3D type (SFvec3f etc.), otherwise ConfigurationProperties.ERROR_UNKNOWN_FIELD_TYPE if not recognized
      See Also:
      ConfigurationProperties.ERROR_UNKNOWN_FIELD_TYPE
    • getAccessType

      public java.lang.String getAccessType​(java.lang.String fieldName)
      Indicate accessType corresponding to given fieldName.
      Specified by:
      getAccessType in class X3DConcreteElement
      Parameters:
      fieldName - name of field in this X3D node
      Returns:
      X3D accessType (inputOnly etc.), otherwise ConfigurationProperties.ERROR_UNKNOWN_FIELD_ACCESSTYPE if not recognized
      See Also:
      ConfigurationProperties.ERROR_UNKNOWN_FIELD_ACCESSTYPE
    • getContainerFieldDefault

      public final java.lang.String getContainerFieldDefault()
      containerField describes typical field relationship of a node to its parent. Usage is not ordinarily needed when using this API, default value is provided for informational purposes.
      Specified by:
      getContainerFieldDefault in class X3DConcreteNode
      Returns:
      default containerField value
      See Also:
      X3D Scene Authoring Hints: containerField, X3D Unified Object Model (X3DUOM)
    • initialize

      public final void initialize()
      Initialize all member variables to default values.
      Overrides:
      initialize in class X3DConcreteNode
    • getActionKeyPress

      public int getActionKeyPress()
      Provide int value from outputOnly SFInt32 field named actionKeyPress.

      Tooltip: action key press gives following values: HOME=000 END=1001 PGUP=1002 PGDN=1003 UP=1004 DOWN=1005 LEFT=1006 RIGHT=1007 F1..F12 = 1008..1019.
      • Warning: it is an error to define this transient outputOnly field in an X3D file, instead only use it a source for ROUTE events.
      Specified by:
      getActionKeyPress in interface KeySensor
      Returns:
      value of actionKeyPress field
    • getActionKeyRelease

      public int getActionKeyRelease()
      Provide int value from outputOnly SFInt32 field named actionKeyRelease.

      Tooltip: action key release gives following values: HOME=000 END=1001 PGUP=1002 PGDN=1003 UP=1004 DOWN=1005 LEFT=1006 RIGHT=1007 F1..F12 = 1008..1019.
      • Warning: it is an error to define this transient outputOnly field in an X3D file, instead only use it a source for ROUTE events.
      Specified by:
      getActionKeyRelease in interface KeySensor
      Returns:
      value of actionKeyRelease field
    • getAltKey

      public boolean getAltKey()
      Provide boolean value from outputOnly SFBool field named altKey.

      Tooltip: altKey generates true event when pressed, false event when released.
      • Warning: it is an error to define this transient outputOnly field in an X3D file, instead only use it a source for ROUTE events.
      Specified by:
      getAltKey in interface KeySensor
      Returns:
      value of altKey field
    • getControlKey

      public boolean getControlKey()
      Provide boolean value from outputOnly SFBool field named controlKey.

      Tooltip: controlKey generates true event when pressed, false event when released.
      • Warning: it is an error to define this transient outputOnly field in an X3D file, instead only use it a source for ROUTE events.
      Specified by:
      getControlKey in interface KeySensor
      Returns:
      value of controlKey field
    • getEnabled

      public boolean getEnabled()
      Provide boolean value from inputOutput SFBool field named enabled.

      Tooltip: Enables/disables node operation. *
      Specified by:
      getEnabled in interface KeySensor
      Specified by:
      getEnabled in interface X3DKeyDeviceSensorNode
      Specified by:
      getEnabled in interface X3DSensorNode
      Returns:
      value of enabled field
    • setEnabled

      public KeySensorObject setEnabled​(boolean newValue)
      Accessor method to assign boolean value to inputOutput SFBool field named enabled.

      Tooltip: Enables/disables node operation. *
      Specified by:
      setEnabled in interface KeySensor
      Specified by:
      setEnabled in interface X3DKeyDeviceSensorNode
      Specified by:
      setEnabled in interface X3DSensorNode
      Parameters:
      newValue - is new value for the enabled field.
      Returns:
      KeySensorObject - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
    • setEnabled

      public KeySensorObject setEnabled​(SFBoolObject newValue)
      Assign typed object value to SFBool enabled field, similar to setEnabled(boolean).
      Parameters:
      newValue - is new value for the enabled field.
      Returns:
      KeySensorObject - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
    • getIS

      public ISObject getIS()
      Provide ISObject instance (using a properly typed node) from inputOutput SFNode field IS.
      Specified by:
      getIS in class X3DConcreteNode
      Returns:
      value of IS field
      See Also:
      X3D Tooltips: IS, X3D Tooltips: connect
    • setIS

      public KeySensorObject setIS​(ISObject newValue)
      Accessor method to assign ISObject instance (using a properly typed node) to inputOutput SFNode field IS.
      Specified by:
      setIS in class X3DConcreteNode
      Parameters:
      newValue - is new value for the IS field.
      Returns:
      KeySensorObject - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
      See Also:
      X3D Tooltips: IS, X3D Tooltips: connect
    • clearIS

      public KeySensorObject clearIS()
      Utility method to clear SFNode value of IS field.
      Returns:
      KeySensorObject - namely this same object to allow sequential method pipelining (i.e. consecutive setAttribute method invocations).
    • hasIS

      public boolean hasIS()
      Indicate whether an object is available for inputOutput SFNode field IS.
      Returns:
      whether a concrete statement or CommentsBlock is available.
      See Also:
      getIS()
    • getIsActive

      public boolean getIsActive()
      Provide boolean value from outputOnly SFBool field named isActive.

      Tooltip: Select geometry by activating the pointing device (e.g. clicking the mouse) to generate isActive events. Output event isActive=true is sent when geometry is selected (e.g. when primary mouse button is pressed), output event isActive=false is sent when geometry is deselected (e.g. when primary mouse button is released).
      • Warning: it is an error to define this transient outputOnly field in an X3D file, instead only use it a source for ROUTE events.
      Specified by:
      getIsActive in interface KeySensor
      Specified by:
      getIsActive in interface X3DKeyDeviceSensorNode
      Specified by:
      getIsActive in interface X3DSensorNode
      Returns:
      value of isActive field
    • getKeyPress

      public java.lang.String getKeyPress()
      Provide String value from outputOnly SFString field named keyPress.

      Tooltip: Events generated when user presses character-producing keys on keyboard produces integer UTF-8 character values.
      • Warning: it is an error to define this transient outputOnly field in an X3D file, instead only use it a source for ROUTE events.
      Specified by:
      getKeyPress in interface KeySensor
      Returns:
      value of keyPress field
    • getKeyRelease

      public java.lang.String getKeyRelease()
      Provide String value from outputOnly SFString field named keyRelease.

      Tooltip: Events generated when user releases character-producing keys on keyboard produces integer UTF-8 character values.
      • Warning: it is an error to define this transient outputOnly field in an X3D file, instead only use it a source for ROUTE events.
      Specified by:
      getKeyRelease in interface KeySensor
      Returns:
      value of keyRelease field
    • getMetadata

      public X3DMetadataObject getMetadata()
      Provide X3DMetadataObject instance (using a properly typed node) from inputOutput SFNode field metadata.
      Specified by:
      getMetadata in interface KeySensor
      Specified by:
      getMetadata in interface X3DChildNode
      Specified by:
      getMetadata in interface X3DKeyDeviceSensorNode
      Specified by:
      getMetadata in interface X3DNode
      Specified by:
      getMetadata in interface X3DSensorNode
      Returns:
      value of metadata field
      See Also:
      Tooltip: [X3DMetadataObject] Information about this node can be contained in a MetadataBoolean, MetadataDouble, MetadataFloat, MetadataInteger, MetadataString or MetadataSet node. Hint: X3D Architecture 7.2.4 Metadata https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/core.html#Metadata , X3D Scene Authoring Hints: Metadata Nodes
    • setMetadata

      public KeySensorObject setMetadata​(X3DMetadataObject newValue)
      Accessor method to assign X3DMetadataObject instance (using a properly typed node) to inputOutput SFNode field metadata.
      Specified by:
      setMetadata in interface KeySensor
      Specified by:
      setMetadata in interface X3DChildNode
      Specified by:
      setMetadata in interface X3DKeyDeviceSensorNode
      Specified by:
      setMetadata in interface X3DNode
      Specified by:
      setMetadata in interface X3DSensorNode
      Specified by:
      setMetadata in class X3DConcreteNode
      Parameters:
      newValue - is new value for the metadata field.
      Returns:
      KeySensorObject - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
      See Also:
      Tooltip: [X3DMetadataObject] Information about this node can be contained in a MetadataBoolean, MetadataDouble, MetadataFloat, MetadataInteger, MetadataString or MetadataSet node. Hint: X3D Architecture 7.2.4 Metadata https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/core.html#Metadata , X3D Scene Authoring Hints: Metadata Nodes
    • clearMetadata

      public KeySensorObject clearMetadata()
      Utility method to clear SFNode value of metadata field.
      Returns:
      KeySensorObject - namely this same object to allow sequential method pipelining (i.e. consecutive setAttribute method invocations).
    • setMetadata

      public KeySensorObject setMetadata​(ProtoInstanceObject newValue)
      Assign ProtoInstance (using a properly typed node) to inputOutput SFNode field metadata.
      Specified by:
      setMetadata in class X3DConcreteNode
      Parameters:
      newValue - is new value for the metadata field.
      Returns:
      KeySensorObject - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
      See Also:
      setMetadata(X3DMetadataObject)
    • hasMetadata

      public boolean hasMetadata()
      Indicate whether an object is available for inputOutput SFNode field metadata.
      Returns:
      whether a properly typed node or ProtoInstance or CommentsBlock is available.
      See Also:
      getMetadata(), getMetadataProtoInstance(), X3D Scene Authoring Hints: Metadata Nodes
    • getShiftKey

      public boolean getShiftKey()
      Provide boolean value from outputOnly SFBool field named shiftKey.

      Tooltip: shiftKey generates true event when pressed, false event when released.
      • Warning: it is an error to define this transient outputOnly field in an X3D file, instead only use it a source for ROUTE events.
      Specified by:
      getShiftKey in interface KeySensor
      Returns:
      value of shiftKey field
    • getDEF

      public java.lang.String getDEF()
      Provide String value from inputOutput SFString field named DEF.

      Tooltip: DEF defines a unique ID name for this node, referenceable by other nodes.
      Overrides:
      getDEF in class X3DConcreteNode
      Returns:
      value of DEF field
      See Also:
      X3D Scene Authoring Hints: Naming Conventions
    • setDEF

      public final KeySensorObject setDEF​(java.lang.String newValue)
      Accessor method to assign String value to inputOutput SFString field named DEF.

      Tooltip: DEF defines a unique ID name for this node, referenceable by other nodes.

      Note that setting the DEF value clears the USE value.
      Specified by:
      setDEF in class X3DConcreteNode
      Parameters:
      newValue - is new value for the DEF field.
      Returns:
      KeySensorObject - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
    • setDEF

      public KeySensorObject setDEF​(SFStringObject newValue)
      Assign typed object value to SFString DEF field, similar to setDEF(String).
      Parameters:
      newValue - is new value for the DEF field.
      Returns:
      KeySensorObject - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
    • getUSE

      public java.lang.String getUSE()
      Provide String value from inputOutput SFString field named USE.

      Tooltip: USE means reuse an already DEF-ed node ID, excluding all child nodes and all other attributes (except for containerField, which can have a different value).
      • Hint: USE references to previously defined DEF geometry (instead of duplicating nodes) can improve performance.
      • Warning: do NOT include any child nodes, a DEF attribute, or any other attribute values (except for containerField) when defining a USE attribute.
      • Warning: each USE value must match a corresponding DEF value that is defined earlier in the scene.
      Overrides:
      getUSE in class X3DConcreteNode
      Returns:
      value of USE field
      See Also:
      X3D Scene Authoring Hints: Naming Conventions
    • setUSE

      public final KeySensorObject setUSE​(java.lang.String newValue)
      Accessor method to assign String value to inputOutput SFString field named USE.

      Tooltip: USE means reuse an already DEF-ed node ID, excluding all child nodes and all other attributes (except for containerField, which can have a different value).
      • Hint: USE references to previously defined DEF geometry (instead of duplicating nodes) can improve performance.
      • Warning: do NOT include any child nodes, a DEF attribute, or any other attribute values (except for containerField) when defining a USE attribute.
      • Warning: each USE value must match a corresponding DEF value that is defined earlier in the scene.


      Note: each USE node is still an independent object, with the USE value matching the DEF value in the preceding object.

      Warning: invoking the setUSE() method on this node resets all other fields to their default values (except for containerField) and also releases all child nodes.

      Warning: no other operations can be performed to modify a USE node other than setting an alternate containerField value.
      Specified by:
      setUSE in class X3DConcreteNode
      Parameters:
      newValue - is new value for the USE field.
      Returns:
      KeySensorObject - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
    • setUSE

      public KeySensorObject setUSE​(SFStringObject newValue)
      Assign typed object value to SFString USE field, similar to setUSE(String).
      Parameters:
      newValue - is new value for the USE field.
      Returns:
      KeySensorObject - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
    • getCssClass

      public java.lang.String getCssClass()
      Provide String value from inputOutput SFString field named class.

      Tooltip: The class attribute is a space-separated list of classes, reserved for use by CSS cascading stylesheets.
      • Warning: currently the class attribute is only supported in XML encoding of X3D scenes.
      • Hint: W3C Cascading Style Sheets https://www.w3.org/Style/CSS
      Overrides:
      getCssClass in class X3DConcreteNode
      Returns:
      value of class field
      See Also:
      W3C Cascading Style Sheets
    • setCssClass

      public final KeySensorObject setCssClass​(java.lang.String newValue)
      Accessor method to assign String value to inputOutput SFString field named class.

      Tooltip: The class attribute is a space-separated list of classes, reserved for use by CSS cascading stylesheets.
      • Warning: currently the class attribute is only supported in XML encoding of X3D scenes.
      • Hint: W3C Cascading Style Sheets https://www.w3.org/Style/CSS
      Specified by:
      setCssClass in class X3DConcreteNode
      Parameters:
      newValue - is new value for the class field.
      Returns:
      KeySensorObject - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
      See Also:
      W3C Cascading Style Sheets
    • setCssClass

      public KeySensorObject setCssClass​(SFStringObject newValue)
      Assign typed object value to SFString cssClass field, similar to setCssClass(String).
      Parameters:
      newValue - is new value for the class field.
      Returns:
      KeySensorObject - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
    • setUSE

      public KeySensorObject setUSE​(KeySensorObject DEFnode)
      Assign a USE reference to another DEF node of same node type, similar to setUSE(String).

      Warning: note that the setUSE() method on this node resets all other fields to their default values (except for containerField) and also releases all child nodes.

      Warning: no other operations can be performed to modify a USE node other than setting an alternate containerField value.
      Parameters:
      DEFnode - must have a DEF value defined
      Returns:
      KeySensorObject - namely this same object to allow sequential method pipelining (i.e. consecutive method invocations on the same object).
    • addComments

      public KeySensorObject addComments​(java.lang.String newComment)
      Add comment as String to contained commentsList.
      Specified by:
      addComments in class X3DConcreteElement
      Parameters:
      newComment - initial value
      Returns:
      KeySensorObject - namely this same object to allow sequential method pipelining (i.e. consecutive setAttribute method invocations).
    • addComments

      public KeySensorObject addComments​(java.lang.String[] newComments)
      Add comments as String[] array to contained commentsList.
      Specified by:
      addComments in class X3DConcreteElement
      Parameters:
      newComments - array of comments
      Returns:
      KeySensorObject - namely this same object to allow sequential method pipelining (i.e. consecutive setAttribute method invocations).
    • addComments

      public KeySensorObject addComments​(CommentsBlock newCommentsBlock)
      Add CommentsBlock to contained commentsList.
      Specified by:
      addComments in class X3DConcreteElement
      Parameters:
      newCommentsBlock - block of comments to add
      Returns:
      KeySensorObject - namely this same object to allow sequential method pipelining (i.e. consecutive setAttribute method invocations).
    • toStringX3D

      public java.lang.String toStringX3D​(int indentLevel)
      Recursive method to provide X3D string serialization of this model subgraph, utilizing XML encoding and conforming to X3D Canonical Form.
      Specified by:
      toStringX3D in class X3DConcreteElement
      Parameters:
      indentLevel - number of levels of indentation for this element
      Returns:
      X3D string
      See Also:
      X3DObject.FILE_EXTENSION_X3D, X3DObject.FILE_EXTENSION_XML, X3DObject.toStringXML(), X3DObject.toFileXML(String), X3DObject.toFileX3D(String), X3D XML Encoding, X3D Compressed Binary Encoding: X3D Canonical Form, X3D Canonicalization (C14N) Tool
    • toStringClassicVRML

      public java.lang.String toStringClassicVRML​(int indentLevel)
      Recursive method to provide ClassicVRML string serialization.
      Specified by:
      toStringClassicVRML in class X3DConcreteElement
      Parameters:
      indentLevel - number of levels of indentation for this element
      Returns:
      ClassicVRML string
      See Also:
      X3DObject.FILE_EXTENSION_CLASSICVRML, X3D Resources: Virtual Reality Modeling Language (VRML) 97, Extensible 3D (X3D) encodings Part 2: Classic VRML encoding, Extensible 3D (X3D) encodings Part 2: Classic VRML encoding, Annex A: Grammar
    • toStringVRML97

      public java.lang.String toStringVRML97​(int indentLevel)
      Recursive method to provide VRML97 string serialization.
      Specified by:
      toStringVRML97 in class X3DConcreteElement
      Parameters:
      indentLevel - number of levels of indentation for this element
      Returns:
      VRML97 string
      See Also:
      X3DObject.FILE_EXTENSION_VRML97, X3D Resources: Virtual Reality Modeling Language (VRML) 97, Virtual Reality Modeling Language (VRML) 97 specification, VRML 97 v2.1 Amendment
    • findElementByNameValue

      public X3DConcreteElement findElementByNameValue​(java.lang.String nameValue)
      Recursive method to provide object reference to node or statement by name attribute, if found as part of this element or in a contained element. Elements with name fields include meta, Metadata* nodes, field/fieldValue, ProtoDeclare/ExternProtoDeclare/ProtoInstance, CAD and HAnim nodes.

      Warning: first start with findAncestorSceneObject() to check entire scene graph, or findAncestorX3DObject() to check entire model document.

      Warning: more than one element may be found that has the same name, this method does not handle that case.
      Specified by:
      findElementByNameValue in class X3DConcreteElement
      Parameters:
      nameValue - is value of the name field being searched for in this element and child elements(if any)
      Returns:
      object reference to found element, null otherwise
      See Also:
      findNodeByDEF(String), X3DConcreteElement.hasAncestorSceneObject(), X3DConcreteElement.findAncestorX3DObject()
    • findElementByNameValue

      public X3DConcreteElement findElementByNameValue​(java.lang.String nameValue, java.lang.String elementName)
      Recursive method to provide object reference to node or statement by name attribute, if found as part of this element or in a contained element. Elements with name fields include meta, Metadata* nodes, field/fieldValue, ProtoDeclare/ExternProtoDeclare/ProtoInstance, CAD and HAnim nodes.

      Warning: first start with findAncestorSceneObject() to check entire scene graph, or findAncestorX3DObject() to check entire model document.

      Warning: more than one element may be found that has the same name, this method does not handle that case.
      Specified by:
      findElementByNameValue in class X3DConcreteElement
      Parameters:
      nameValue - is value of the name field being searched for in this element and child elements(if any)
      elementName - identifies the element of interest (meta MetadataString ProtoDeclare CADassembly ProtoInstance HAnimHumanoid etc.)
      Returns:
      object reference to found element, null otherwise
      See Also:
      findNodeByDEF(String), X3DConcreteElement.hasAncestorSceneObject(), X3DConcreteElement.findAncestorX3DObject()
    • hasElementByNameValue

      public boolean hasElementByNameValue​(java.lang.String nameValue, java.lang.String elementName)
      Recursive method to determine whether node or statement with given name attribute is found, meaning both objects are attached to same scene graph.
      Parameters:
      nameValue - is value of the name field being searched for in this element and child elements(if any)
      elementName - identifies the element of interest (meta MetadataString ProtoDeclare CADassembly ProtoInstance HAnimHumanoid etc.)
      Returns:
      whether node is found
      See Also:
      findElementByNameValue(String, String)
    • findNodeByDEF

      public X3DConcreteNode findNodeByDEF​(java.lang.String DEFvalue)
      Recursive method to provide object reference to node by DEF, if found as this node or in a contained node.

      Warning: first start with findAncestorSceneObject() to check entire scene graph, or findAncestorX3DObject() to check entire model document.

      Warning: more than one element may be found that has the same DEF, this method does not handle that case.
      Specified by:
      findNodeByDEF in class X3DConcreteElement
      Parameters:
      DEFvalue - is value of the name field being searched for in this element and child elements(if any)
      Returns:
      object reference to found node, null otherwise
      See Also:
      findElementByNameValue(String), X3DConcreteElement.hasAncestorSceneObject(), X3DConcreteElement.findAncestorX3DObject()
    • hasNodeByDEF

      public boolean hasNodeByDEF​(java.lang.String DEFvalue)
      Recursive method to determine whether node with DEFvalue is found, meaning both objects are attached to same scene graph.
      Parameters:
      DEFvalue - is value of the name field being searched for in this element and child elements(if any)
      Returns:
      whether node is found
      See Also:
      findNodeByDEF(String)
    • validate

      public java.lang.String validate()
      Recursive method to validate this element plus all contained nodes and statements, using both datatype-specification value checks and regular expression (regex) checking of corresponding string values.
      Specified by:
      validate in class X3DConcreteElement
      Returns:
      validation results (if any)