NJX:NJXFILEUPLOAD2

The NJX:NJXFILEUPLOAD2 control is used to upload files from the client to the Natural server. The rendering is identical to the FILEUPLOAD2 control.

To use the NJX:NJXFILEUPLOAD2 control, you must also add an NJX:OBJECTS control to your page layout because the uploaded file will be added to the NJX:OBJECTS data structure. Once a file is uploaded, the Natural application can refer to the file via the CONTENTID of the uploaded object.

The following topics are covered below:

Example
Adapter Interface
Built-in Events
Properties

Note:
See also Documents in Some Common Rules for all Controls.

Example

The XML layout definition is:

<itr>
   <njx:njxfileupload2 width="400" valueprop="myupload" 
        withsubmitbutton="true" submitbuttonname="Upload to Natural">
   </njx:njxfileupload2>
</itr>

Adapter Interface

1 MYUPLOAD 
2 CEXT (A) DYNAMIC
2 CNAME (A) DYNAMIC
2 CONTENTID (A) DYNAMIC
2 CPATH (A) DYNAMIC

When uploading a file, the client-side file name, extension and path are provided in the CNAME, CEXT and CPATH fields, respectively. The Natural application can optionally specify a CONTENTID for the NJX:OBJECTS data structure. If CONTENTID is not specified, a concatenation of file name and extension is automatically set as the CONTENTID value.

Built-in Events

When you choose the Upload to Natural button in the above example, the value-of-valueprop.onUploadFinished event is triggered in the Natural application. When this event is triggered, the CNAME, CEXT, CPATH and CONTENTID fields are filled, and the file content is provided in the data structure of the NJX:OBJECTS control.

Properties

Basic
width	Width of the control. There are three possibilities to define the width: (A) You do not define a width at all. In this case the width of the control will either be a default width or - in case of container controls - it will follow the width that is occupied by its content. (B) Pixel sizing: just input a number value (e.g. "100"). (C) Percentage sizing: input a percantage value (e.g. "50%"). Pay attention: percentage sizing will only bring up correct results if the parent element of the control properly defines a width this control can reference. If you specify this control to have a width of 50% then the parent element (e.g. an ITR-row) may itself define a width of "100%". If the parent element does not specify a width then the rendering result may not represent what you expect.	Optional	100 120 140 160 180 200 50% 100%
valueprop	Name of the adapter parameter that provides the content of the control.	Optional
withsubmitbutton	If set to "TRUE" adds an additional button to the control to start the file upload.	Optional	true false
submitbuttonname	The name of the submit button in case WITSUBMITBUTTON is set to "true".	Optional
submitbuttontextid	"Textid" for the name of the submitbutton if WITHSUBMITBUTTON is set to "true".	Optional
comment	Comment without any effect on rendering and behaviour. The comment is shown in the layout editor's tree view.	Optional
Binding
valueprop	(already explained above)
visibleprop	Name of the adapter parameter that provides the information if this control is displayed or not. As consequence you can control the visibility of the control dynamically.	Optional
invisiblemode	If the visibility of the control is determined dynamically by an adapter property then there are two rendering modes if the visibility is "false": (1) "invisible": the control is not visible. (2)"cleared": the control is not visible but it still occupies space.	Optional	invisible disabled cleared
Appearance
invisiblemode	(already explained above)
rowspan	Row spanning of control. If you use TR table rows then you may sometimes want to control the number of rows your control occupies. By default it is "1" - but you may want to define the control to span over more than one columns. The property only makes sense in table rows that are snychronized within one container (i.e. TR, STR table rows). It does not make sense in ITR rows, because these rows are explicitly not synched.	Optional	1 2 3 4 5 50 int-value
colspan	Column spanning of control. If you use TR table rows then you may sometimes want to control the number of columns your control occupies. By default it is "1" - but you may want to define the control to span over more than one columns. The property only makes sense in table rows that are snychronized within one container (i.e. TR, STR table rows). It does not make sense in ITR rows, because these rows are explicitly not synched.	Optional	1 2 3 4 5 50 int-value
darkbackground	Normally the background is in light colour but the CIS style sheets also have a dark(er) grey colour to be used. If DARKBACKGROUND is set to true then the darker background colour is chosen. This property typically is used to integrate light coloured controls into darker container areas.	Optional	true false