uk.co.weft.htform
Class DoubleWidget

java.lang.Object
  uk.co.weft.htform.ResourceConsumerImpl
      uk.co.weft.domutil.NodeGeneratorImpl
          uk.co.weft.htform.Widget
              uk.co.weft.htform.DoubleWidget

All Implemented Interfaces:

java.lang.Cloneable, NodeGenerator, ResourceConsumer

public class DoubleWidget

extends Widget

A widget which constrains entry to floating point numbers -- if JavaScript allows. All the intelligence for this is in the JavaScript, q.v.

Version:

$Revision: 1.1.2.2 $ This revision: $Author: simon $

Author:

Simon Brooke

Field Summary

static int

DW_SIZE my size

Fields inherited from class uk.co.weft.htform.Widget

ACTIONCSSCLASS, akprompt, attrs, CONTEXTATTRIBUTESSUFFIX, cssClass, DANGEROUSCSSCLASS, debug, DEFAULTTOKEN, dflt, form, generateAs, GENERATEASHTML, GENERATEASXFORM, GENERATEASXML, help, HELPTOKEN, immutable, ISIMMUTABLETOKEN, ISMANDATORYTOKEN, mandatory, MANDATORYCSSCLASS, maxVisibleSize, name, NAMETOKEN, OPTIONALCSSCLASS, PREVIOUSVALUESUFFIX, prompt, PROMPTTOKEN, size, SIZETOKEN, type, TYPETOKEN

Fields inherited from class uk.co.weft.domutil.NodeGeneratorImpl

namespaceURI

Fields inherited from class uk.co.weft.htform.ResourceConsumerImpl

resourceBundleName

Fields inherited from interface uk.co.weft.domutil.NodeGenerator

NAMESPACEURIMAGICTOKEN

Fields inherited from interface uk.co.weft.htform.ResourceConsumer

RESOURCEBUNDLEMAGICTOKEN

Constructor Summary

DoubleWidget()
If you use this constructor, you are strongly advised to use the init() method.

DoubleWidget(java.lang.String myname)
minimum initialisation is I must have a name

DoubleWidget(java.lang.String myname, java.lang.String myprompt)
name and prompt is better

DoubleWidget(java.lang.String myname, java.lang.String myprompt, java.lang.String myhelp)
name, prompt and helptext is better still.

Method Summary

int	getWidth(Context context) Specialisation:
protected void	preProcess(Context context) Check that the value, if present, is parsable as a floating point number.
java.lang.String	scriptRequest(Context context) A double widget does nothing clever without it's script

Methods inherited from class uk.co.weft.htform.Widget

clone, generate, generateAttributes, generateAttributes, generateHTML, generateHTMLPrompt, generateInnerHTML, generateValue, generateXML, getContextAttribute, getCssClass, getHeight, getHelp, getName, getPrompt, getTabPlaces, getType, init, layout, layout, layout, layout, layoutAttribute, layoutAttributes, layoutValue, makeReady, maybeLayout, maybeLayout, onloadRequest, onloadRequest, postProcess, scriptRequest, setAttribute, setContextAttribute, setCssClass, setDebug, setDefault, setHelp, setImmutable, setMandatory, setMandatory, setName, setPrompt, setSize, setType

Methods inherited from class uk.co.weft.domutil.NodeGeneratorImpl

getNamespaceURI, setNamespaceURI

Methods inherited from class uk.co.weft.htform.ResourceConsumerImpl

getContextOrResource, getResource, getResourceOrContext, getResourceString, grs, grs

Methods inherited from class java.lang.Object

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

Field Detail

DW_SIZE

public static final int DW_SIZE

my size

See Also:

Constant Field Values

Constructor Detail

DoubleWidget

public DoubleWidget()

If you use this constructor, you are strongly advised to use the init() method.

See Also:

Widget.init(Context)

DoubleWidget

public DoubleWidget(java.lang.String myname)

minimum initialisation is I must have a name

DoubleWidget

public DoubleWidget(java.lang.String myname,
                    java.lang.String myprompt)

name and prompt is better

DoubleWidget

public DoubleWidget(java.lang.String myname,
                    java.lang.String myprompt,
                    java.lang.String myhelp)

name, prompt and helptext is better still.

Method Detail

scriptRequest

public java.lang.String scriptRequest(Context context)
                               throws java.lang.Exception

A double widget does nothing clever without it's script

Overrides:

scriptRequest in class Widget

Returns:

a comma separated list of JavaScript files which must be loaded to support this widget

Throws:

java.lang.Exception

preProcess

protected void preProcess(Context context)
                   throws DataStoreException,
                          javax.servlet.ServletException

Check that the value, if present, is parsable as a floating point number.

Overrides:

preProcess in class Widget

Parameters:

context - the Context of the service in which I'm called

Throws:

DataFormatException - if data fails validation test

javax.servlet.ServletException - if the thing itself breaks

DataStoreException

getWidth

public int getWidth(Context context)

Specialisation:

Overrides:

getWidth in class Widget

Parameters:

context -

Returns:

See Also:

Widget.getWidth(uk.co.weft.dbutil.Context)