(WIP) Make DS properties menu spawn with sequential datasets

[DivergentEuropeans]

Signed-off-by: Leanid Astrakou lastrakou@rocketsoftware.com

[Martin-Zeithaml]

formatSummary would be IMO more readable, if the "if reclen > 0 summary with length else summary without length" will be simple separate function:

formatSummaryReclen(org: string, reclen: number): string {
  if (reclen > 0) {
    return org + reclen;
  } else {
    return org;
  }
}

 formatSummary(org: string, recfm: string, reclen: number): string {
    let summary = "N/A";
    if (org.substring(0, 2) == "PS") {
      if (recfm && recfm != "N/A") {
        if (recfm[0] == 'F') {
          summary = formatSummaryReclen("FB", reclen);
        } else if (recfm[0] == 'V') {
	  summary = formatSummaryReclen("VB", reclen);
        }
      } else {
        summary = formatSummaryReclen("S", reclen);
      }
    } else if (org.substring(0, 2) == "PO") {
      if (this.datasetIsPDS.length == 0) { //PDS is false
        summary = formatSummaryReclen("HFS", reclen);
      } else if (this.datasetIsPDS.length == 1) { //PDS is true
        summary = formatSummaryReclen("PDS", reclen);
      } else { // PDS/E is true
        summary = formatSummaryReclen("PDSE", reclen);
      }
    } else if (org.substring(0, 2) == "VS") {
      summary = formatSummaryReclen("VSAM", reclen);
    } else if (org.substring(0, 2) == "DA") {
      summary = formatSummaryReclen("DA", reclen);
    }
    return summary;
  }

Anyway, with or without suggested change, looks good.

[DivergentEuropeans]

@Martin-Zeithaml Thanks for the review! The problem appears to be with this PR, I may have been using an invalid dataset, as sequential datasets work in the DS properties view, but not this one which has an undefined record format. If that's true, then we'd want UX to show the DS was invalid though I'm not 100% certain the test DS I was using is an invalid one, changed title to "WIP"