Infor M3 H5 Script TypeScript Template Generator

// H5 script for MMS001/E: reads WBITNO, calls MMS200MI/GetItmBasic, shows STAT.
// Run mode: Init
class MMS001_ShowItemStatus {
    private controller: IInstanceController;
    private log: IScriptLog;
    private unsubscribeRequesting: Function;
    private unsubscribeRequested: Function;
    private static readonly RUN_ON: string = "Init";

    constructor(scriptArgs: IScriptArgs) {
        this.controller = scriptArgs.controller;
        this.log = scriptArgs.log;
    }

    public static Init(args: IScriptArgs): void {
        new MMS001_ShowItemStatus(args).run();
    }

    private run(): void {
        if (MMS001_ShowItemStatus.RUN_ON === "Requesting") {
            this.unsubscribeRequesting = this.controller.Requesting.On((e: IRequestingEventArgs) => {
                this.onRequesting(e);
            });
            this.unsubscribeRequested = this.controller.Requested.On(() => {
                this.detach();
            });
        } else {
            this.lookup();
        }
    }

    private onRequesting(e: IRequestingEventArgs): void {
        if (e.commandType === "KEY" && e.commandValue === "ENTER") {
            this.lookup();
        }
    }

    private detach(): void {
        if (this.unsubscribeRequesting) { this.unsubscribeRequesting(); }
        if (this.unsubscribeRequested) { this.unsubscribeRequested(); }
    }

    private lookup(): void {
        const value: string = this.controller.GetValue("WBITNO");
        if (!value) {
            this.log.Info("MMS001_ShowItemStatus: WBITNO is empty, nothing to look up");
            return;
        }
        const request = new MIRequest();
        request.program = "MMS200MI";
        request.transaction = "GetItmBasic";
        request.record = { ITNO: value };
        request.outputFields = ["STAT"];

        MIService.Current.executeRequest(request).then((response: IMIResponse) => {
            const item = response.item;
            const shown: string = item ? String(item["STAT"]) : "(no record)";
            this.log.Info("MMS001_ShowItemStatus: " + value + " -> STAT = " + shown);
            this.showLabel("STAT: " + shown);
        }).catch((response: IMIResponse) => {
            this.log.Error("MMS001_ShowItemStatus: MMS200MI/GetItmBasic failed: " + response.errorMessage);
            this.showLabel("Lookup failed: " + response.errorMessage);
        });
    }

    private showLabel(text: string): void {
        const label = new LabelElement();
        label.Name = "MMS001_ShowItemStatus_lbl";
        label.Value = text;
        label.Position = new PositionElement();
        label.Position.Top = 2;
        label.Position.Left = 60;
        label.Position.Width = 30;
        this.controller.GetContentElement().AddElement(label);
    }
}

1. Compile the TypeScript to JavaScript with the H5 Script SDK typings referenced (tsc, target as in the SDK samples).
2. Upload MMS001_ShowItemStatus.js in H5 Administration Tools > Scripts.
3. Open MMS001/E, then Tools > Personalize > Scripts, add script MMS001_ShowItemStatus and save.
4. Reload the panel and check the script log for the Info lines.