selectmap.vm

2005年出版之《Beginning Java Server Pages》亚马逊书评5颗星

#*
  -- selectmap.vm
  --
  -- Required Parameters:
  --   * label  - The description that will be used to identfy the control.
  --   * name   - The name of the attribute to put and pull the result from.
  --              Equates to the NAME parameter of the HTML SELECT tag.
  --   * list   - Iterator that will provide the options for the control.
  --              Equates to the HTML OPTION tags in the SELECT and supplies
  --              both the NAME and VALUE parameters of the OPTION tag.
  --
  -- Optional Parameters:
  --   * labelposition   - determines were the label will be place in relation
  --                       to the control.  Default is to the left of the control.
  --   * size            - SIZE parameter of the HTML SELECT tag.
  --   * disabled        - DISABLED parameter of the HTML SELECT tag.
  --   * tabindex        - tabindex parameter of the HTML SELECT tag.
  --   * onchange        - onkeyup parameter of the HTML SELECT tag.
  --   * size            - SIZE parameter of the HTML SELECT tag.
  --   * multiple        - MULTIPLE parameter of the HTML SELECT tag.
  --   * headerKey       - Combined with headerValue parameter specifies the top of select list
  --   * headerValue     - see above
  --
    *#

#bean ("webwork.util.ContainUtil" $contain)

#parse("/template/xhtml/controlheader.vm")

<select name="$parameters.name"
#if ($parameters.size)             size="$parameters.size"            #end
#if ($parameters.disabled == true) disabled="disabled"                #end
#if ($parameters.tabindex)         tabindex="$parameters.tabindex"    #end
#if ($parameters.onchange)         onchange="$parameters.onchange"    #end
#if ($parameters.id)               id="$parameters.id"                #end
#if ($parameters.multiple)         multiple="multiple"                #end
>

#if ($parameters.headerKey && $parameters.headerValue)
    <option value="$parameters.headerKey">$parameters.headerValue</option>
#end

## What I really want to do is:       #set ( $listKey = ${param.${parameters.listKey}} )
## However, velocity doesn't allow nested ${'s.  So we have to go to all this effort!
## see http://www.mail-archive.com/[e-mail]/msg09369.html for more information

#set ($param_prefix = '$param.')  ## This is because we use $param in the foreach block below
#set ($prefix_key = "$param_prefix$parameters.listKey")
#set ($prefix_value = "$param_prefix$parameters.listValue")

#foreach ($param in $parameters.list)
    #set ($listKey = $webwork.evaluate("$prefix_key"))
    #set ($listValue = $webwork.evaluate("$prefix_value"))

    <option value="$listKey"
        #if ($contain.contains($parameters.nameValue, $listKey) == true)
            selected="selected"
        #end
    >$listValue</option>
#end
</select>
#parse("/template/xhtml/controlfooter.vm")