org.sf.charttaglibs
Class BaseHandlerTag

java.lang.Object
  javax.servlet.jsp.tagext.TagSupport
      javax.servlet.jsp.tagext.BodyTagSupport
          org.sf.charttaglibs.BaseHandlerTag

All Implemented Interfaces:

javax.servlet.jsp.tagext.BodyTag, javax.servlet.jsp.tagext.IterationTag, javax.servlet.jsp.tagext.JspTag, java.io.Serializable, javax.servlet.jsp.tagext.Tag

Direct Known Subclasses:

BaseChartTag

public abstract class BaseHandlerTag

extends javax.servlet.jsp.tagext.BodyTagSupport

Base class for tags that render form elements capable of including JavaScript event handlers and the common html tags. This class does not implement the doStartTag() or doEndTag() methods. Subclasses should provide appropriate implementations of these.

See Also:

Serialized Form

Field Summary

protected java.lang.String	align The property to specify where to align the image.
private java.lang.String	alt The alternate text of this element.
protected java.lang.String	border The border size around the image.
protected java.lang.String	height The image height.
protected java.lang.String	hspace The horizontal spacing around the image.
protected java.lang.String	ismap Server-side image map declaration.
protected static Message	messages The message resources for this package.
protected java.lang.String	name The JSP bean name for query parameters.
private java.lang.String	onabort Component has received abort event.
private java.lang.String	onblur Component lost focus event.
private java.lang.String	onclick Mouse click event.
private java.lang.String	onerror Component has received error event.
private java.lang.String	onfocus Component has received focus event.
private java.lang.String	onload Component has received load event.
protected java.lang.String	vspace The vertical spacing around the image.
protected java.lang.String	width The image width.
private boolean	xhtml

Fields inherited from class javax.servlet.jsp.tagext.BodyTagSupport

bodyContent

Fields inherited from class javax.servlet.jsp.tagext.TagSupport

id, pageContext

Fields inherited from interface javax.servlet.jsp.tagext.BodyTag

EVAL_BODY_BUFFERED, EVAL_BODY_TAG

Fields inherited from interface javax.servlet.jsp.tagext.IterationTag

EVAL_BODY_AGAIN

Fields inherited from interface javax.servlet.jsp.tagext.Tag

EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE

Constructor Summary

BaseHandlerTag()

Method Summary

java.lang.String	getAlign()
java.lang.String	getAlt()
java.lang.String	getBorder()
protected java.lang.String	getElementClose() Returns the closing brace for an input element depending on xhtml status.
java.lang.String	getHeight()
java.lang.String	getHspace()
java.lang.String	getIsmap()
java.lang.String	getName()
java.lang.String	getOnabort()
java.lang.String	getOnblur()
java.lang.String	getOnclick()
java.lang.String	getOnerror()
java.lang.String	getOnfocus()
java.lang.String	getOnload()
java.lang.String	getVspace()
java.lang.String	getWidth()
protected boolean	isXhtml() Allows HTML tags to find out if they're nested within an %lt;html:html> tag that has xhtml set to true.
protected java.lang.String	lookupProperty(java.lang.String beanName, java.lang.String property) Searches all scopes for the bean and calls BeanUtils.getProperty() with the given arguments and converts any exceptions into JspException.
protected void	prepareAttribute(java.lang.StringBuffer handlers, java.lang.String name, java.lang.Object value) Prepares an attribute if the value is not null, appending it to the the given StringBuffer.
protected java.lang.String	prepareHtmlElements() Prepares the html attributes for inclusion in the component's HTML tag.
protected java.lang.String	prepareJavaScriptsEvent() Prepares the JavaScript event for inclusion in the component's HTML tag.
protected void	prepareOtherAttributes(java.lang.StringBuffer handlers) 'Hook' to enable tags to be extended and additional attributes added.
void	release() Release any acquired resources.
void	setAlign(java.lang.String align)
void	setAlt(java.lang.String alt)
void	setBorder(java.lang.String border)
void	setHeight(java.lang.String height)
void	setHspace(java.lang.String hspace)
void	setIsmap(java.lang.String ismap)
void	setName(java.lang.String name)
void	setOnabort(java.lang.String onabort)
void	setOnblur(java.lang.String onblur)
void	setOnclick(java.lang.String onclick)
void	setOnerror(java.lang.String onerror)
void	setOnfocus(java.lang.String onfocus)
void	setOnload(java.lang.String onload)
void	setVspace(java.lang.String vspace)
void	setWidth(java.lang.String width)

Methods inherited from class javax.servlet.jsp.tagext.BodyTagSupport

doAfterBody, doEndTag, doInitBody, doStartTag, getBodyContent, getPreviousOut, setBodyContent

Methods inherited from class javax.servlet.jsp.tagext.TagSupport

findAncestorWithClass, getId, getParent, getValue, getValues, removeValue, setId, setPageContext, setParent, setValue

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.servlet.jsp.tagext.Tag

getParent, setPageContext, setParent

Field Detail

messages

protected static Message messages

The message resources for this package.

alt

private java.lang.String alt

The alternate text of this element.

align

protected java.lang.String align

The property to specify where to align the image.

border

protected java.lang.String border

The border size around the image.

height

protected java.lang.String height

The image height.

hspace

protected java.lang.String hspace

The horizontal spacing around the image.

ismap

protected java.lang.String ismap

Server-side image map declaration.

name

protected java.lang.String name

The JSP bean name for query parameters.

vspace

protected java.lang.String vspace

The vertical spacing around the image.

width

protected java.lang.String width

The image width.

onclick

private java.lang.String onclick

Mouse click event.

onblur

private java.lang.String onblur

Component lost focus event.

onfocus

private java.lang.String onfocus

Component has received focus event.

onabort

private java.lang.String onabort

Component has received abort event.

onerror

private java.lang.String onerror

Component has received error event.

onload

private java.lang.String onload

Component has received load event.

xhtml

private boolean xhtml

Constructor Detail

BaseHandlerTag

public BaseHandlerTag()

Method Detail

release

public void release()

Release any acquired resources.

prepareHtmlElements

protected java.lang.String prepareHtmlElements()
                                        throws javax.servlet.jsp.JspException

Prepares the html attributes for inclusion in the component's HTML tag.

Returns:

The prepared String for inclusion in the HTML tag.

Throws:

javax.servlet.jsp.JspException - if invalid attributes are specified

prepareJavaScriptsEvent

protected java.lang.String prepareJavaScriptsEvent()

Prepares the JavaScript event for inclusion in the component's HTML tag.

Returns:

The prepared String for inclusion in the HTML tag.

prepareOtherAttributes

protected void prepareOtherAttributes(java.lang.StringBuffer handlers)

'Hook' to enable tags to be extended and additional attributes added.

Parameters:

handlers - The StringBuffer that output will be appended to.

prepareAttribute

protected void prepareAttribute(java.lang.StringBuffer handlers,
                                java.lang.String name,
                                java.lang.Object value)

Prepares an attribute if the value is not null, appending it to the the given StringBuffer.

Parameters:

handlers - The StringBuffer that output will be appended to.

isXhtml

protected boolean isXhtml()

Allows HTML tags to find out if they're nested within an %lt;html:html> tag that has xhtml set to true.

Returns:

true if the tag is nested within an html tag with xhtml set to true, false otherwise.

getElementClose

protected java.lang.String getElementClose()

Returns the closing brace for an input element depending on xhtml status. The tag must be nested within an %lt;html:html> tag that has xhtml set to true.

Returns:

String - > if xhtml is false, /> if xhtml is true

lookupProperty

protected java.lang.String lookupProperty(java.lang.String beanName,
                                          java.lang.String property)
                                   throws javax.servlet.jsp.JspException

Searches all scopes for the bean and calls BeanUtils.getProperty() with the given arguments and converts any exceptions into JspException.

Parameters:

beanName - The name of the object to get the property from.

property - The name of the property to get.

Returns:

The value of the property.

Throws:

javax.servlet.jsp.JspException

getAlign

public java.lang.String getAlign()

setAlign

public void setAlign(java.lang.String align)

getAlt

public java.lang.String getAlt()

setAlt

public void setAlt(java.lang.String alt)

getBorder

public java.lang.String getBorder()

setBorder

public void setBorder(java.lang.String border)

getHeight

public java.lang.String getHeight()

setHeight

public void setHeight(java.lang.String height)

getHspace

public java.lang.String getHspace()

setHspace

public void setHspace(java.lang.String hspace)

getIsmap

public java.lang.String getIsmap()

setIsmap

public void setIsmap(java.lang.String ismap)

getName

public java.lang.String getName()

setName

public void setName(java.lang.String name)

getOnabort

public java.lang.String getOnabort()

setOnabort

public void setOnabort(java.lang.String onabort)

getOnblur

public java.lang.String getOnblur()

setOnblur

public void setOnblur(java.lang.String onblur)

getOnclick

public java.lang.String getOnclick()

setOnclick

public void setOnclick(java.lang.String onclick)

getOnerror

public java.lang.String getOnerror()

setOnerror

public void setOnerror(java.lang.String onerror)

getOnfocus

public java.lang.String getOnfocus()

setOnfocus

public void setOnfocus(java.lang.String onfocus)

getOnload

public java.lang.String getOnload()

setOnload

public void setOnload(java.lang.String onload)

getVspace

public java.lang.String getVspace()

setVspace

public void setVspace(java.lang.String vspace)

getWidth

public java.lang.String getWidth()

setWidth

public void setWidth(java.lang.String width)