Class jala.Form.Component.File

Object
   |
   +--jala.Form.Component.Input
         |
         +--jala.Form.Component.File

Direct Known Subclasses:

jala.Form.Component.Image

class jala.Form.Component.File

extends jala.Form.Component.Input

Subclass of jala.Form.Component.Input which renders and validates a file upload.
Defined in Form.js

Constructor Detail

jala.Form.Component.File

jala.Form.Component.File(<String> name)

Creates a new File component instance

Parameters:
name - Name of the component, used as name of the html controls.

Returns:
A newly created File component

checkRequirements

String checkRequirements(<Object> reqData)

Validates a file upload by making sure it's there (if REQUIRE is set), checking the file size, the content type and by trying to construct an image.

Parameters:
reqData - request data
tracker - jala.Form.Tracker object storing possible error messages

Returns:
null if everything is ok or string containing error message

renderControls

void renderControls(<Object> attr, <Object> value, <Object> reqData)

Renders a file input tag to the response.

Parameters:
attr - Basic attributes for this element.
value - Value to be used for rendering this element.
reqData - Request data for the whole form. This argument is passed only if the form is re-rendered after an error occured.