editor / add helper

[fxp]

Create an helper list for the current input element. Current input could be an element or an attribute (eg. uom). In editing mode, for gco:CharacterString elements (with no codelist or enumeration defined in the schema) an helper list could be defined in loc files using the helper tag. Then a list of values is displayed next to the input field.

Example :

<element name="srv:serviceType">
		<label>Service Type</label>
		<description>Service type name from a registry of services. For example, the values of the nameSpace and name attributes of GeneralName may be 'OGC' and 'catalogue'</description>
		<helper>
			<option value="OGC:WMS">OGC Web Map Service (OGC:WMS)</option>
			<option value="OGC:WFS">OGC Web Feature Service (OGC:WFS)</option>
			<option value="OGC:WCS">OGC Web Coverage Service (OGC:WCS)</option>
			<option value="W3C:HTML:DOWNLOAD">Download (W3C:HTML:DOWNLOAD)</option>
			<option value="W3C:HTML:LINK">Information (W3C:HTML:LINK)</option>
		</helper>
	</element>}}}

[fxp]

Added helper mechanism. Committed revision 4456.

Todo : add helper to other language file.