package gw.bizrules.pcf

uses java.util.Map

/**
 * a CommandParameterUIConfig impl for parameters that aren't shown in the UI, but exist to "pass through" parameters
 * from the context definition
 */
class HiddenContextPassThruCommandParameterUIConfig implements CommandDefinitionUIConfig.CommandParameterUIConfig {

  delegate _config represents CommandDefinitionUIConfig.CommandParameterUIConfig

  construct(valuesPerContext: Map<RuleContextDefinitionKey, String>) {
    _config = new CommandParameterUIConfigBuilder()
        .withContextChangeHandler(\context, holder -> {
          var key = context == null ? null : context.get().getKey()
          var frag = holder.FragHolder.Fragment as CodeExpressionFragment
          if (key == null) {
            frag.setCodeText(null);
          } else {
            frag.setCodeText(valuesPerContext.get(key));
          }
        })
        .build()
  }

  override property get Visible() : boolean {
    return false
  }
}