# com.bea.wlw.netui.tags.template
Visible Class

public class Visible
extends `AbstractBaseTag`
implements `TemplateConstants`

Tag that turns on or off display of the body content based upon the visible state of the tag.

Attribute Descriptions
Attribute | Required | Runtime Expression Evaluation | Data Bindable
--- | --- | --- | ---
visible | No | No | No
A boolean property indicating if the content is visible or not.
visibility | No | No | Read Only
Sets the visible property through an expression.
negate | No | No | No
Sets the negate property which will negate the visible state.

Related Topics

<netui-template:...> Tags Sample
``Attribute``
``IncludeSection``
``Section``
``SetAttribute``
``Template``

Hierarchy
  `Object`
  `TagSupport`
  `BodyTagSupport`
  `AbstractBaseTag`
  `Visible`

All Implemented Interfaces
  `BodyTag`, `IterationTag`, `Serializable`, `Tag`, `TemplateConstants`

## Field Summary

Fields from com.bea.wlw.netui.tags`.`AbstractBaseTag``
``ATTR_GENERAL`, `ATTR_GENERAL_EXPRESSION`, `ATTR_JAVASCRIPT`, `ATTR_STYLE`, `CLASS`, `ID`, `JAVASCRIPT_STATUS`, `NAME`, `NETUI_UNIQUE_CNT`, `ONCLICK`, `ONDBLCLICK`, `ONKEYDOWN`, `ONKEYPRESS`, `ONKEYUP`, `ONMOUSEDOWN`, `ONMOUSEMOVE`, `ONMOUSEOUT`, `ONMOUSEOVER`, `ONMOUSEUP`, `STYLE`, `TABINDEX``

Fields from javax.servlet.jsp.tagext`.`BodyTagSupport``
`bodyContent`

Fields from javax.servlet.jsp.tagext`.`TagSupport``
`id, pageContext`

Fields from interface javax.servlet.jsp.tagext`.`BodyTag``
`EVAL_BODY_BUFFERED, EVAL_BODY_TAG`

Fields from interface javax.servlet.jsp.tagext`.`IterationTag``
`EVAL_BODY_AGAIN`

Fields from interface javax.servlet.jsp.tagext`.`Tag``
`EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE`

Fields from interface com.bea.wlw.netui.tags.template`.`TemplateConstants``
``TEMPLATE_ATTRIBUTES`, `TEMPLATE_SECTIONS``

## Constructor Summary

Visible()

## Method Summary

`public int` | `doStartTag`() Renders the body content if the visible state is `true`.
`public `String`` | `getTagName`() Returns the name of the Tag.
`public `String`` | `getVisibility`() Returns the expression used to set the visibility state.
`public boolean` | `isNegate`() Returns the negate state of the tag.
`public boolean` | `isVisible`() Returns the visible state of the tag.
`protected void` | `localRelease`() Resets all of the fields of the tag.
`public void` | `setNegate`(boolean negate) Sets the negate state of the tag.
`public void` | `setVisibility`(`String` expr) Sets the visible state of the tag through an expression.
`public void` | `setVisible`(boolean visible) Sets the visible state of the tag.

Methods from `com.bea.wlw.netui.tags.`AbstractBaseTag``
``addTagIdMapping`, `evaluateAttributeToString`, `filter`, `filter`, `getJavaScriptUtils`, `getNearestForm`, `getScriptReporter`, `getUserLocale`, `registerTagError`, `release`, `renderAttribute`, `rewriteName`, `write``

Methods from `javax.servlet.jsp.tagext.`BodyTagSupport``
`doAfterBody, doEndTag, doInitBody, getBodyContent, getPreviousOut, release, setBodyContent`

Methods from `javax.servlet.jsp.tagext.`TagSupport``
`doAfterBody, doEndTag, doStartTag, findAncestorWithClass, getId, getParent, getValue, getValues, release, removeValue, setId, setPageContext, setParent, setValue`

Methods from class `java.lang.`Object``
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods from interface `javax.servlet.jsp.tagext.`BodyTag``
`doInitBody, setBodyContent`

Methods from interface `javax.servlet.jsp.tagext.`IterationTag``
`doAfterBody`

Methods from interface `javax.servlet.jsp.tagext.`Tag``
`doEndTag, doStartTag, getParent, release, setPageContext, setParent`

## Constructor Detail

### Visible

    public Visible()

## Method Detail

### doStartTag() Method

    public int doStartTag()
         throws JspException

Renders the body content if the visible state is `true`. Otherwise nothing is rendered.

Overrides
  `BodyTagSupport.doStartTag()`

#### Returns

SKIP_BODY if the visible state is `false`, otherwise EVAL_BODY_INCLUDE to evaluate the body content.

#### Exceptions

``JspException``
  if there are errors.

### getTagName() Method

    public String getTagName()

Returns the name of the Tag. This is used to identify the type of tag reporting errors.

Overrides
  `AbstractBaseTag.getTagName()`

#### Returns

a constant string representing the name of the tag.

### getVisibility() Method

    public String getVisibility()

Returns the expression used to set the visibility state.

#### Returns

a String expression

### isNegate() Method

    public boolean isNegate()

Returns the negate state of the tag.

#### Returns

`true` if the isVisible should be negated, `false` otherwise.

### isVisible() Method

    public boolean isVisible()

Returns the visible state of the tag.

#### Returns

`true` if the body content is visible, `false` otherwise.

### localRelease() Method

    protected void localRelease()

Resets all of the fields of the tag.

Overrides
  `AbstractBaseTag.localRelease()`

### setNegate(boolean) Method

    public void setNegate(boolean negate)

Sets the negate state of the tag. If negate is `true` this will negate the meaning of the visible state.

#### Parameters

negate
  `Boolean` value representing the negate state.

### setVisibility(String) Method

    public void setVisibility(String expr)
         throws JspException

Sets the visible state of the tag through an expression.

#### Parameters

expr
  an expression will be checked to see if the body content is visible or not.

#### Exceptions

``JspException``

### setVisible(boolean) Method

    public void setVisible(boolean visible)

Sets the visible state of the tag.

#### Parameters

visible
  `Boolean` value representing the visible state.