org.apache.struts2.components
类 ComboBox

java.lang.Object
  org.apache.struts2.components.Component
      org.apache.struts2.components.UIBean
          org.apache.struts2.components.TextField
              org.apache.struts2.components.ComboBox

public class ComboBox
extends TextField

The combo box is basically an HTML INPUT of type text and HTML SELECT grouped together to give you a combo box functionality. You can place text in the INPUT control by using the SELECT control or type it in directly in the text field.

In this example, the SELECT will be populated from id=year attribute. Counter is itself an Iterator. It will span from first to last. The population is done via javascript, and requires that this tag be surrounded by a <form>.

Note that unlike the <s:select/> tag, there is no ability to define the individual <option> tags' id attribute or content separately. Each of these is simply populated from the toString() method of the list item. Presumably this is because the select box isn't intended to actually submit useful data, but to assist the user in filling out the text field.

Examples

 
 JSP:
 <-- Example One -->
 <s:bean name="struts.util.Counter" var="year">
   <s:param name="first" value="text('firstBirthYear')"/>
   <s:param name="last" value="2000"/>

   <s:combobox label="Birth year" size="6" maxlength="4" name="birthYear" list="#year"/>
 </s:bean>

 <-- Example Two -->
 

 <-- Example Two -->
 

 Velocity:
 #tag( ComboBox "label=Birth year" "size=6" "maxlength=4" "name=birthYear" "list=#year" )
 
 

字段摘要

static String

TEMPLATE

从类 org.apache.struts2.components.Component 继承的字段

COMPONENT_STACK

构造方法摘要

ComboBox(com.opensymphony.xwork2.util.ValueStack stack, javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)

方法摘要

void	evaluateExtraParams()
void	setEmptyOption(String emptyOption)
void	setHeaderKey(String headerKey)
void	setHeaderValue(String headerValue)
void	setList(String list)
void	setListKey(String listKey)
void	setListValue(String listValue)

从类 org.apache.struts2.components.TextField 继承的方法

setMaxlength, setMaxLength, setReadonly, setSize, setType

从类 org.apache.struts2.components.UIBean 继承的方法

addFormParameter, copyParams, end, evaluateParams, getId, getTemplate, getTemplateDir, getTheme, setAccesskey, 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, setTabindex, setTemplate, setTemplateDir, setTemplateEngineManager, setTheme, setTitle, setTooltip, setTooltipConfig, setTooltipCssClass, setTooltipDelay, setTooltipIconPath, setUIThemeExpansionToken, setValue

从类 org.apache.struts2.components.Component 继承的方法

addAllParameters, addParameter, altSyntax, getComponentStack, getParameters, getStack, setActionMapper, setThrowExceptionsOnELFailure, setUrlHelper, start, usesBody

从类 java.lang.Object 继承的方法

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

字段详细信息

TEMPLATE

public static final String TEMPLATE

另请参见：

常量字段值

构造方法详细信息

ComboBox

public ComboBox(com.opensymphony.xwork2.util.ValueStack stack,
                javax.servlet.http.HttpServletRequest request,
                javax.servlet.http.HttpServletResponse response)

方法详细信息

evaluateExtraParams

public void evaluateExtraParams()

setList

public void setList(String list)

setEmptyOption

public void setEmptyOption(String emptyOption)

setHeaderKey

public void setHeaderKey(String headerKey)

setHeaderValue

public void setHeaderValue(String headerValue)

setListKey

public void setListKey(String listKey)

setListValue

public void setListValue(String listValue)