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com.sas.servlet.tbeans.models
Class JavaScriptNode

com.sas.servlet.tbeans.models.JavaScriptNode
All Implemented Interfaces:
ItemInterface, JavaScriptNodeInterface, JavaScriptNodeStyleKeysInterface
Direct Known Subclasses:
DataItemNode, PercentItemNode, PropertyNode
public class JavaScriptNode
implements JavaScriptNodeInterface, JavaScriptNodeStyleKeysInterface

JavaScriptNode is a generic implementation of JavaScriptNodeInterface.

JavaScriptNode is used to construct an item that has text and a return value. Along with text and return value, JavaScriptNode can contain images that will be displayed along with the text.

A JavaScriptNode is used to construct a node in Java that will be created as a node in JavaScript.

ComboBoxView and ListBoxView require JavaScriptNodes as items populated in the model.

Problem: Create a document using JSP that contains a ComboBox input field.

Solution: Write a Java scriptlet in a JSP page that uses the ComboBox Transformation Bean to create the HTML ComboBox element.

JSP Page:

 <html>
 <LINK REL=STYLESHEET HREF="sasComponents.css" TYPE="text/css">
 <body>
 
 <p> This example shows a simple ComboBox generated by the ComboBox Transformation Bean. </p>
 <form>
 <%
    // Create a new ComboBox object
    com.sas.servlet.tbeans.form.html.ComboBoxView combobox =
        new com.sas.servlet.tbeans.form.html.ComboBoxView();
 
 

    //Create the Nodes
          com.sas.servlet.tbeans.models.JavaScriptNode node1 = 
                new com.sas.servlet.tbeans.models.JavaScriptNode();
        node1.setText("red");
  node1.setImage("folderOpen.gif");
        

  com.sas.servlet.tbeans.models.JavaScriptNode node2 = 
                new com.sas.servlet.tbeans.models.JavaScriptNode();
        node2.setText("blue");
  node2.setImage("folderOpen.gif");

        com.sas.servlet.tbeans.models.JavaScriptNode node3 = 
                new com.sas.servlet.tbeans.models.JavaScriptNode();
        node3.setText("green");
  node3.setImage("folderOpen.gif");
 


    // Create the model
    javax.swing.DefaultComboBoxModel model =
        new javax.swing.DefaultComboBoxModel();
    model.addElement(node1);
    model.addElement(node2);
    model.addElement(node3);

    // Set the model
    combobox.setModel(model);


    // Set the selected index
    combobox.setSelectedIndex(1);


    // Output the select
    combobox.write(out);
 %>
 </form>
 </body>
 </html>

HTML output:

 <html>
 <LINK REL=STYLESHEET HREF="sasComponents.css" TYPE="text/css">
 <script language="JavaScript" src="sas_comboBoxView.js"></script>
 <script language="JavaScript" src="sas_listBoxView.js"></script>
 <script language="JavaScript" src="sas_node.js"></script>
 <body>
 
 <p> This example shows a simple ComboBox generated by the ComboBox Transformation Bean. </p>
 
 <TABLE BORDER="0" CELLSPACING="0" CELLPADDING="0">
 <TR VALIGN="TOP">
 <TD ALIGN="LEFT">
     <DIV ID='ComboBoxView_0_LabelNode' CLASS='comboBoxViewLabel' STYLE=width:116px; >

 <SCRIPT LANGUAGE='JavaScript'>

 var args = new Array(1);

 args[0] = {render:render,value:"null",image:"folderOpen.gif",text:"red"};

 ComboBoxView_0_node = new JavaScriptNode(args[0]);
 ComboBoxView_0_node.render('ComboBoxView_0_LabelNode');
 </SCRIPT>
     </DIV>
  </TD>
 <TD ALIGN="LEFT">
    <IMG src="/assets/select_up.gif" onMouseDown="this.src='/assets/select_down.gif'; 
      comboBoxView_showDiv('_ComboBoxView_0_divObject', ListBoxView_2_list, ComboBoxView_0_node);" 
      onMouseup="this.src='/assets/select_up.gif'; comboBoxView_setFocus('_ComboBoxView_0_divObject', 'ListBoxView_2', ComboBoxView_0_LabelNode);" 
      style="height:100%; width:100%;">
 </TD>
 </TR>
 <TR>
  <TD COLSPAN="2">
    <DIV ID='_ComboBoxView_0_divObject' CLASS="comboBoxViewDropDown" onBlur="comboBoxView_hideDiv('_ComboBoxView_0_divObject', 'ComboBoxView_0_LabelNode');" 
      onKeyDown="comboBoxView_changeRow(event, '_ComboBoxView_0_divObject', ListBoxView_2_list,'ComboBoxView_0_LabelNode',ComboBoxView_0_node,true)">
 <DIV ID='ListBoxView_2' CLASS="comboBoxViewList" STYLE=";">

 <SCRIPT LANGUAGE='JavaScript'>

 var args = new Array(4);

 args[0] = {render:render,value:"null",image:"folderOpen.gif",text:"red"};
 args[1] = {render:render,value:"null",image:"folderOpen.gif",text:"blue"};
 args[2] = {render:render,value:"null",image:"folderOpen.gif",text:"green"};


 ListBoxView_2_node1 = new MyJSNode(args[0]);
 ListBoxView_2_node2 = new MyJSNode(args[1]);
 ListBoxView_2_node3 = new MyJSNode(args[2]);
 
 ListBoxView_2_list = new List('ListBoxView_2_list');
 ListBoxView_2_list.imageLoc='/assets/';
 ListBoxView_2_list.wrapperName="ListBoxView_2";
 ListBoxView_2_list.addItem(ListBoxView_2_node1);
 ListBoxView_2_list.addItem(ListBoxView_2_node2);
 ListBoxView_2_list.addItem(ListBoxView_2_node3);

 ListBoxView_2_list.useMouseDown = true;

 ListBoxView_2_list.useMouseOver = true;

 ListBoxView_2_list.useMouseOut = true;
 
 ListBoxView_2_list.render();
 
 function listViewAddMouseDown(node)
 {
    comboBoxView_madeChoice(node, 'ComboBoxView_0_LabelNode', ComboBoxView_0_node)
 }
 
 function listViewAddMouseOver(node)
 {
    comboBoxView_highlightRow(node);
 }
 
 function listViewAddMouseOut(node)
 {
    comboBoxView_unhighlightRow(node);
 }
 
 </SCRIPT>
 </DIV>
 
 </DIV>
 </TD>
 </TR>
 </TABLE>


Field Summary
 
Fields inherited from interface com.sas.servlet.tbeans.models.JavaScriptNodeStyleKeysInterface
JAVASCRIPTNODE_IMAGE, JAVASCRIPTNODE_INDENT, JAVASCRIPTNODE_SELECTED_TEXT, JAVASCRIPTNODE_TEXT
 
Constructor Summary
JavaScriptNode()
          Construct a new JSNode
 
Method Summary
 java.lang.String createNodeParameterString(java.util.Map params)
          Returns a String containing the name/value pairs of the properties to be passed to the JavaScript node constructor.
protected static java.lang.String escapeNodeText(java.lang.String nText)
          escapeNodeText reformats the text if a user needs to include quotes or a backslash or newline inside the text.
 java.lang.String getAlternateText()
          Gets the alternate text for the image of the JavaScriptNode.
 java.lang.String getCloneNodeFunctionName()
          Gets the clone node function name for the JavaScriptNode.
 java.lang.String getDeselectNodeFunctionName()
          Gets the deselect node function name for the JavaScriptNode.
 java.lang.String getDisabledImage()
          Gets the disabled image source for the JavaScriptNode.
 java.lang.String getImage()
          Gets the image source for the JavaScriptNode.
 java.lang.String getImageLocation()
          Gets the image location for the JavaScriptNode.
 java.lang.String getNodeConstructorName()
          Gets the node constructor name for the JavaScriptNode.
 java.util.Map getNodeConstructorParameters()
          Returns a Map containing the name/value pairs of the properties to be passed to the constructor.
 java.lang.String getRenderNodeFunctionName()
          Gets the render node function name for the JavaScriptNode.
 java.lang.String getSelectNodeFunctionName()
          Gets the select node function name for the JavaScriptNode.
 java.lang.String getStyleClassPrefix()
          Gets the style class prefix for the JavaScriptNode.
 java.util.Map getStyleMap()
          Returns the style map for this JavaScriptNode.
 boolean isImagesOnly()
          Determines if images only should be displayed.
 boolean isNoWrap()
          Determines if node text should wrap.
 void setAlternateText(java.lang.String value)
          Sets the alternate text for the image of the JavaScriptNode.
 void setCloneNodeFunctionName(java.lang.String value)
          Sets the name of the JavaScript function to use to clone this JavaScriptNode.
 void setDeselectNodeFunctionName(java.lang.String value)
          Sets the name of the JavaScript function to use when node is deselected.
 void setDisabledImage(java.lang.String value)
          Sets the disabled image source for the JavaScriptNode.
 void setImage(java.lang.String value)
          Sets the image source for the JavaScriptNode.
 void setImageLocation(java.lang.String imageLocation)
          Sets the location of images for the JavaScriptNode.
 void setImagesOnly(boolean value)
          Sets whether or not to display images only.
 void setNodeConstructorName(java.lang.String value)
          Sets the name of the JavaScript function to use as the constructor for this object.
 void setNoWrap(boolean value)
          Sets whether or not to wrap the node text.
 void setRenderNodeFunctionName(java.lang.String value)
          Sets the name of the JavaScript function to use to render this object.
 void setSelectNodeFunctionName(java.lang.String value)
          Sets the name of the JavaScript function to use when node is selected.
 void setStyleClassPrefix(java.lang.String value)
          Sets the style class prefix for the JavaScriptNode.
 
Methods inherited from class com.sas.servlet.tbeans.models.Item
getName, getOnBlur, getOnChange, getOnClick, getOnFocus, getOnKeyDown, getOnKeyPress, getOnKeyUp, getOnMouseDown, getOnMouseOut, getOnMouseOver, getOnMouseUp, getText, getValue, isSelected, setName, setOnBlur, setOnChange, setOnClick, setOnFocus, setOnKeyDown, setOnKeyPress, setOnKeyUp, setOnMouseDown, setOnMouseOut, setOnMouseOver, setOnMouseUp, setSelected, setText, setValue, toString
 
Methods inherited from interface com.sas.servlet.tbeans.models.JavaScriptNodeInterface
getIndentionLevel, getText, getValue, setIndentionLevel, setText, setValue
 

Constructor Detail

JavaScriptNode

public JavaScriptNode()
Construct a new JSNode

Method Detail

getStyleMap

public java.util.Map getStyleMap()
Returns the style map for this JavaScriptNode.
STYLE KEY DEFAULT STYLE
JAVASCRIPTNODE_IMAGE NONE
JAVASCRIPTNODE_TEXT NONE
JAVASCRIPTNODE_INDENT NONE

Specified by:
getStyleMap in interface JavaScriptNodeInterface
Returns:
styles used for this JavaScriptNode

setImagesOnly

public void setImagesOnly(boolean value)
Sets whether or not to display images only. By default if you only set image and value on a node, the display text is set to value. By setting this method to TRUE, the display text will NOT be set to value. FALSE by default.

Parameters:
value - TRUE to display images only.

isImagesOnly

public boolean isImagesOnly()
Determines if images only should be displayed.

Returns:
TRUE if images only are displayed.

setNoWrap

public void setNoWrap(boolean value)
Sets whether or not to wrap the node text. FALSE by default.

Specified by:
setNoWrap in interface JavaScriptNodeInterface
Parameters:
value - TRUE to wrap node text.

isNoWrap

public boolean isNoWrap()
Determines if node text should wrap.

Specified by:
isNoWrap in interface JavaScriptNodeInterface
Returns:
TRUE if node text should wrap.

setImage

public void setImage(java.lang.String value)
Sets the image source for the JavaScriptNode.

Specified by:
setImage in interface JavaScriptNodeInterface
Parameters:
value - The source for the image

getImage

public java.lang.String getImage()
Gets the image source for the JavaScriptNode.

Specified by:
getImage in interface JavaScriptNodeInterface
Returns:
The source of the image

setDisabledImage

public void setDisabledImage(java.lang.String value)
Sets the disabled image source for the JavaScriptNode.

Specified by:
setDisabledImage in interface JavaScriptNodeInterface
Parameters:
value - The source for the disabled image

getDisabledImage

public java.lang.String getDisabledImage()
Gets the disabled image source for the JavaScriptNode.

Specified by:
getDisabledImage in interface JavaScriptNodeInterface
Returns:
The source of the disabled image

setImageLocation

public void setImageLocation(java.lang.String imageLocation)
Sets the location of images for the JavaScriptNode.

Specified by:
setImageLocation in interface JavaScriptNodeInterface
Parameters:
value - The location for the images

getImageLocation

public java.lang.String getImageLocation()
Gets the image location for the JavaScriptNode.

Specified by:
getImageLocation in interface JavaScriptNodeInterface
Returns:
The location of the images

setAlternateText

public void setAlternateText(java.lang.String value)
Sets the alternate text for the image of the JavaScriptNode.

Parameters:
text - The alternate text of the image

getAlternateText

public java.lang.String getAlternateText()
Gets the alternate text for the image of the JavaScriptNode.

Returns:
The alternate text of the image

setStyleClassPrefix

public void setStyleClassPrefix(java.lang.String value)
Sets the style class prefix for the JavaScriptNode.

Specified by:
setStyleClassPrefix in interface JavaScriptNodeInterface
Parameters:
value - The style class prefix

getStyleClassPrefix

public java.lang.String getStyleClassPrefix()
Gets the style class prefix for the JavaScriptNode.

Specified by:
getStyleClassPrefix in interface JavaScriptNodeInterface
Returns:
The style class prefix

setCloneNodeFunctionName

public void setCloneNodeFunctionName(java.lang.String value)
Sets the name of the JavaScript function to use to clone this JavaScriptNode. This function should clone the node the method is called on. The function should look similar to function sas_Node_nodeClone() { ...... return clonedNode; }

Specified by:
setCloneNodeFunctionName in interface JavaScriptNodeInterface
Parameters:
value - The clone node function name

getCloneNodeFunctionName

public java.lang.String getCloneNodeFunctionName()
Gets the clone node function name for the JavaScriptNode.

Specified by:
getCloneNodeFunctionName in interface JavaScriptNodeInterface
Returns:
The clone node function name

setSelectNodeFunctionName

public void setSelectNodeFunctionName(java.lang.String value)
Sets the name of the JavaScript function to use when node is selected. This function should update the style of the selected node to differentiate it from nodes which are not selected, for example by highlighting it. The function should look similar to function selectNodeFunction() { ..... }

Specified by:
setSelectNodeFunctionName in interface JavaScriptNodeInterface
Parameters:
value - The select node function name

getSelectNodeFunctionName

public java.lang.String getSelectNodeFunctionName()
Gets the select node function name for the JavaScriptNode.

Specified by:
getSelectNodeFunctionName in interface JavaScriptNodeInterface
Returns:
The select node function name

setDeselectNodeFunctionName

public void setDeselectNodeFunctionName(java.lang.String value)
Sets the name of the JavaScript function to use when node is deselected. This function should update the style of the deselected node to differentiate it from nodes which are selected, for example by unhighlighting it. The function should look similar to function deselectNodeFunction() { ..... }

Specified by:
setDeselectNodeFunctionName in interface JavaScriptNodeInterface
Parameters:
value - The deselect node function name

getDeselectNodeFunctionName

public java.lang.String getDeselectNodeFunctionName()
Gets the deselect node function name for the JavaScriptNode.

Specified by:
getDeselectNodeFunctionName in interface JavaScriptNodeInterface
Returns:
The deselect node function name

setNodeConstructorName

public void setNodeConstructorName(java.lang.String value)
Sets the name of the JavaScript function to use as the constructor for this object. This function should create the JavaScriptNode along with initalizing parameters set by the user. The function should look similar to function sas_Node_BaseNode(args) { ..... } The parameter (args) is an array of properties of the JavaScript that should be initalized upon creation.

Specified by:
setNodeConstructorName in interface JavaScriptNodeInterface
Parameters:
value - The node constructor name

getNodeConstructorName

public java.lang.String getNodeConstructorName()
Gets the node constructor name for the JavaScriptNode.

Specified by:
getNodeConstructorName in interface JavaScriptNodeInterface
Returns:
The node constructor function name

escapeNodeText

protected static java.lang.String escapeNodeText(java.lang.String nText)
escapeNodeText reformats the text if a user needs to include quotes or a backslash or newline inside the text. It will run the text through Strings.quoteForXML() and Strings.escapeForJavaScript().

Parameters:
nText - the string to be reformatted
Returns:
String the reformatted string

getNodeConstructorParameters

public java.util.Map getNodeConstructorParameters()
Returns a Map containing the name/value pairs of the properties to be passed to the constructor.

Specified by:
getNodeConstructorParameters in interface JavaScriptNodeInterface
Returns:
parameters The node constructor parameters

createNodeParameterString

public java.lang.String createNodeParameterString(java.util.Map params)
Returns a String containing the name/value pairs of the properties to be passed to the JavaScript node constructor.

Specified by:
createNodeParameterString in interface JavaScriptNodeInterface
Parameters:
The - map of node constructor parameters
Returns:
The JavaScript representation of the node constructor parameters

setRenderNodeFunctionName

public void setRenderNodeFunctionName(java.lang.String value)
Sets the name of the JavaScript function to use to render this object. This function should render the JavaScriptNode to be viewed in the browser, for example by creating a table that makes up the JavaScriptNode. The function should look similar to function sas_Node_nodeRender(_destinationObj) { ..... } The parameter (_destinationObj) is the html/javascript object that you want the node rendered in.

Specified by:
setRenderNodeFunctionName in interface JavaScriptNodeInterface
Parameters:
value - The render node function name

getRenderNodeFunctionName

public java.lang.String getRenderNodeFunctionName()
Gets the render node function name for the JavaScriptNode.

Specified by:
getRenderNodeFunctionName in interface JavaScriptNodeInterface
Returns:
The render node function name
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