org.apache.struts2.components

Class Select

java.lang.Object

org.apache.struts2.components.Component

org.apache.struts2.components.UIBean

org.apache.struts2.components.ListUIBean

org.apache.struts2.components.Select

Direct Known Subclasses:

UpDownSelect

public class Select
extends ListUIBean

Render an HTML input tag of type select.

Examples

 

 <s:select label="Pets"
        name="petIds"
        list="petDao.pets"
        listKey="id"
        listValue="name"
        multiple="true"
        size="3"
        required="true"
        value="%{petDao.pets.{id}}"
 />

 <s:select label="Months"
        name="months"
        headerKey="-1" headerValue="Select Month"
        list="#{'01':'Jan', '02':'Feb', [...]}"
        value="selectedMonth"
        required="true"
 />

 // The month id (01, 02, ...) returned by the getSelectedMonth() call
 // against the stack will be auto-selected

 
 

Note: For any of the tags that use lists (select probably being the most ubiquitous), which uses the OGNL list notation (see the "months" example above), it should be noted that the map key created (in the months example, the '01', '02', etc.) is typed. '1' is a char, '01' is a String, "1" is a String. This is important since if the value returned by your "value" attribute is NOT the same type as the key in the "list" attribute, they WILL NOT MATCH, even though their String values may be equivalent. If they don't match, nothing in your list will be auto-selected.

Field Summary

Fields

Modifier and Type	Field and Description
protected String	emptyOption
protected String	headerKey
protected String	headerValue
protected String	multiple
protected String	size
static String	TEMPLATE

Fields inherited from class org.apache.struts2.components.ListUIBean

list, listCssClass, listCssStyle, listKey, listLabelKey, listTitle, listValue, listValueKey, throwExceptionOnNullValueAttribute

Fields inherited from class org.apache.struts2.components.UIBean

accesskey, cssClass, cssErrorClass, cssErrorStyle, cssStyle, defaultTemplateDir, defaultUITheme, disabled, dynamicAttributes, errorPosition, id, javascriptTooltip, key, label, labelPosition, labelSeparator, name, onblur, onchange, onclick, ondblclick, onfocus, onkeydown, onkeypress, onkeyup, onmousedown, onmousemove, onmouseout, onmouseover, onmouseup, onselect, request, requiredLabel, requiredPosition, response, tabindex, template, templateDir, templateEngineManager, templateSuffix, theme, title, tooltip, tooltipConfig, tooltipCssClass, tooltipDelay, tooltipIconPath, uiThemeExpansionToken, value

Fields inherited from class org.apache.struts2.components.Component

actionMapper, COMPONENT_STACK, devMode, parameters, stack, standardAttributesMap, throwExceptionOnELFailure

Constructor Summary

Constructors

Constructor and Description
Select(ValueStack stack, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)

Method Summary

Modifier and Type	Method and Description
void	evaluateExtraParams()
protected String	getDefaultTemplate() A contract that requires each concrete UI Tag to specify which template should be used as a default.
void	setEmptyOption(String emptyOption)
void	setHeaderKey(String headerKey)
void	setHeaderValue(String headerValue)
void	setMultiple(String multiple)
void	setSize(String size)

Methods inherited from class org.apache.struts2.components.ListUIBean

contains, getValueClassType, setList, setListCssClass, setListCssStyle, setListKey, setListLabelKey, setListTitle, setListValue, setListValueKey, setThrowExceptionOnNullValueAttribute

Methods inherited from class org.apache.struts2.components.UIBean

addFormParameter, buildTemplateName, copyParams, enableAncestorFormCustomOnsubmit, end, ensureAttributeSafelyNotEscaped, escape, evaluateNameValue, evaluateParams, getId, getTemplate, getTemplateDir, getTheme, getTooltipConfig, mergeTemplate, populateComponentHtmlId, setAccesskey, setClass, setCssClass, setCssErrorClass, setCssErrorStyle, setCssStyle, setDefaultTemplateDir, setDefaultUITheme, setDisabled, setDynamicAttributes, setErrorPosition, setId, setJavascriptTooltip, setKey, setLabel, setLabelposition, setLabelSeparator, setName, setOnblur, setOnchange, setOnclick, setOndblclick, setOnfocus, setOnkeydown, setOnkeypress, setOnkeyup, setOnmousedown, setOnmousemove, setOnmouseout, setOnmouseover, setOnmouseup, setOnselect, setRequiredLabel, setRequiredPosition, setStyle, setTabindex, setTemplate, setTemplateDir, setTemplateEngineManager, setTheme, setTitle, setTooltip, setTooltipConfig, setTooltipCssClass, setTooltipDelay, setTooltipIconPath, setUIThemeExpansionToken, setValue

Methods inherited from class org.apache.struts2.components.Component

addAllParameters, addParameter, altSyntax, completeExpressionIfAltSyntax, determineActionURL, determineNamespace, end, escapeHtmlBody, fieldError, findAncestor, findString, findString, findStringIfAltSyntax, findValue, findValue, findValue, getComponentStack, getParameters, getStack, getStandardAttributes, isValidTagAttribute, popComponentStack, setActionMapper, setDevMode, setThrowExceptionsOnELFailure, setUrlHelper, start, stripExpressionIfAltSyntax, toString, usesBody

Methods inherited from class java.lang.Object

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

Field Detail

TEMPLATE

public static final String TEMPLATE

See Also:

Constant Field Values

emptyOption

protected String emptyOption

headerKey

protected String headerKey

headerValue

protected String headerValue

multiple

protected String multiple

size

protected String size

Constructor Detail

Select

public Select(ValueStack stack,
              javax.servlet.http.HttpServletRequest request,
              javax.servlet.http.HttpServletResponse response)

Method Detail

getDefaultTemplate

protected String getDefaultTemplate()

Description copied from class: UIBean

A contract that requires each concrete UI Tag to specify which template should be used as a default. For example, the CheckboxTab might return "checkbox.vm" while the RadioTag might return "radio.vm". This value not begin with a '/' unless you intend to make the path absolute rather than relative to the current theme.

Specified by:

getDefaultTemplate in class UIBean

Returns:

The name of the template to be used as the default.

evaluateExtraParams

public void evaluateExtraParams()

Overrides:

evaluateExtraParams in class ListUIBean

setEmptyOption

public void setEmptyOption(String emptyOption)

setHeaderKey

public void setHeaderKey(String headerKey)

setHeaderValue

public void setHeaderValue(String headerValue)

setMultiple

public void setMultiple(String multiple)

setSize

public void setSize(String size)