cfslider

Description

Puts a slider control, for selecting a numeric value from a range, in a ColdFusion form. The slider moves over the slider groove. As the user moves the slider, the current value displays. Used within a cfform tag. Not supported with Flash forms.

Syntax

<cfslider 
name = "name"
   label = "text"
   range = "min_value, max_value"
   scale = "uinteger"
   value = "integer"
   onValidate = "script_name"
   message = "text"
   onError = "text"
   height = "integer"
   width = "integer"
   vSpace = "integer"
   hSpace = "integer"
   align = "alignment"
   lookAndFeel = "motif" or "windows" or "metal"
   vertical = "yes" or "no"
   bgColor = "color"
   textColor = "color"
   font = "font_name"
   fontSize = "integer"
   italic = "yes" or "no"
   bold = "yes" or "no"
   notSupported = "text">

History

ColdFusion MX: Deprecated the img, imgStyle, grooveColor, refreshLabel, tickmarklabels, tickmarkmajor, tickmarkminor, and tickmarkimages attributes. They might not work, and might cause an error, in later releases.

Attributes

Attribute	Req/Opt	Default	Description
name	Required		Name of `cfslider` control.
label	Optional		Label to display with control; for example, `"Volume"` This displays: `"Volume %value%"` To reference the value, use `"%value%"`. If `%%` is omitted, slider value displays directly after label.
range	Optional	"0,100"	Numeric slider range values. Separate values with a comma.
scale	Optional		Unsigned integer. Defines slider scale, within `range`. For example, if `range` `=` `"0,1000"` and `scale` `=` `"100"`, the display values are: 0, 100, 200, 300, ... Signed and unsigned integers in ColdFusion are in the range -2,147,483,648 to 2,147,483,647.
value	Optional	Minimum in range	Starting slider setting. Must be within the `range` values.
onValidate	Optional		Custom JavaScript function to validate user input; in this case, a change to the default slider value. Specify only the function name.
message	Optional		Message text to appear if validation fails.
onError	Optional		Custom JavaScript function to execute if validation fails. Specify only the function name.
height	Optional	40	Slider control height, in pixels.
width	Optional		Slider control width, in pixels.
vSpace	Optional		Vertical spacing above and below slider, in pixels.
hSpace	Optional		Horizontal spacing to left and right of slider, in pixels.
align	Optional		Alignment of slider: top left bottom baseline texttop absbottom middle absmiddle right
lookAndFeel	Optional	Windows	motif: renders slider using Motif style. windows: renders slider using Windows style. metal: renders slider using Java Swing style. If platform does not support choice, the tag defaults to the platform's default style.
vertical	Optional	No	Yes: renders slider in browser vertically. You must set `width` and `height` attributes; ColdFusion does not automatically swap width and height values. No: renders slider horizontally.
bgColor	Optional		Background color of slider label. For a hexadecimal value, use the form: `bgColor` `=` `"##xxxxxx"`, where x = 0-9 or A-F; use two number signs or none. Any color, in hexadecimal format black red blue magenta cyan orange darkgray pink gray white lightgray yellow
textColor	Optional		Options: same as for `bgcolor` attribute.
font	Optional		Font name for label text.
fontSize	Optional		Font size for label text, in points.
italic	Optional	No	Yes: label text in italics. No: normal text.
bold	Optional	No	Yes: label text in bold. No: medium text.
notSupported	Optional		Text to display if a page that contains a Java applet-based `cfform` control is opened by a browser that does not support Java or has Java support disabled. For example: `"<b> Browser must support Java to view ColdFusion Java Applets</b>"` Default message: <b>Browser must support Java to <br>view ColdFusion Java Applets!</b>

Usage

This tag requires the client to download a Java applet. Using this tag may be slightly slower than using an HTML form element to display the same information. Also, if the client does not have an up-to-date Java plugin installed, the system might also have to download an updated Java plugin to display the tag.

For this tag to work properly, the browser must be JavaScript-enabled.

If the following conditions are true, a user's selection from query data that populates this tag's options continues to display after the user submits the form:

The cfform preserveData attribute is set to "Yes".
The cfform action attribute posts to the same page as the form itself (this is the default), or the action page has a form that contains controls with the same names as corresponding controls on the user entry form.

For more information, see the cfform tag entry.

Example

<!--- This example shows how to use cfslider within cfform. --->
<h3>cfslider Example</h3>
<p>cfslider, used within a cfform, can provide functionality 
   to Java-enabled browsers.
<p>Try moving the slider back and forth to see the real-time value change. 
   Then, submit the form to show how cfslider passes its value on to a new page.
<cfif isdefined("form.mySlider") is true>
   <h3>You slid to a value of    <cfoutput>#mySlider#</cfoutput></h3>
   Try again!
</cfif>
<cfform action = "cfslider.cfm">
   <cfslider name = "mySlider" value = "12" 
      label = "Actual Slider Value "
      range = "1,100" align = "BASELINE" 
      message = "Slide the bar to get a value between 1 and 100" 
      height = "50"       width = "150" font = "Verdana" 
      bgColor = "Silver" bold = "No" 
      italic = "Yes" refreshLabel = "Yes"> 100
<p><input type = "Submit" name = "" value = "Show the Result">
</cfform>

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