User Guide

Building Tag Editors 179

Using OPTIONLinearLayout

Here is a version of the mytag layout template that responds to user preferences for

single line or indented layout:

</WIZIF>

<mytag color="$${clrBGColor}"$${Spacer}face="$${fontFace}

"$${Spacer}size="$${txtSize}">

</taglayout>

The template would generate a tag based on the following user layout preference:

LINEAR:

NONLINEAR:

<mytag color="White"

face="Arial"

size="10">

Using TAGDATAUnknownAttributes

The TagDataUnknownAttributes tag contains the list of attributes that are contained

in the original tag string but are not supported by the editor. For example, you can

write an editor for the HTML tag input. that provides editing capabilities for all basic

attributes, however, the editor will not cover JavaScript event attributes such as,

onCLick). To prevent loss of what are in effect unknown attributes during the editing

process, the editor engine creates the TagDataUnknownAttributes variable

containing a list of unknown attributes together with their original values. You can

use this variable to “stamp” all the unsupported attributes at the end of the tag you

are generating.

<wizif TagDataUnknownAttributes NEQ’’> $$TagDataUnknownAttributes

</wizif>

</taglayout>

If you edit a tag <mytag color="Blue" onClick="CallThis">, the above template

preserves the

onClick attribute even though it is not supported in the editor.