Sample UI builder class with registerOverride() method

 

This blog demonstrates how to use the registerOverride() method in the UIBuilder class to dynamically enable or disable dialog fields, such as date ranges, based on user input.

class myUIBuilder extends SrsReportDataContractUIBuilder
{
    DialogField dlgIsManually;
    DialogField dlgFromDate;
    DialogField dlgToDate;
    myContract contract;

    public void postBuild()
    {
         super();
         contract = this.dataContractObject() as myContract;

         dlgfromdate =                                     this.bindinfo().getdialogfield(contract,

         methodstr(myContract,parmFromDate));
         dlgtodate this.bindinfo().getdialogfield(contract,methodstr

         (myContract,parmToDate));

         dlgIsManually =               this.bindInfo().getDialogField(contract,methodStr            (myContract,parmIsManually));

     //By default these controls will be disabled when parameter form loads first time

       dlgFromDate.enabled(false);
        dlgToDate.enabled(false);

        if (dlgIsManually.value() == NoYes::Yes)
        {
            dlgFromDate.enabled(true);
            dlgToDate.enabled(true);
        }

        //disableDataRange() method attached with modified event of dlgIsManually             control so //this will call whenever dlgIsManually is modified

        dlgIsManually.registerOverrideMethod(methodstr(

        FormCheckBoxControl,modified),            methodstr(myUIBuilder,                     disableDateRange),this);

}

/// Disables date range based on checkbox selection

public boolean disableDateRange(FormCheckBoxControl _isManually)
{
    boolean returnValue;

    returnValue = _isManually.modified();

    dlgFromDate.enabled(true);
    dlgToDate.enabled(true);

    if (returnValue && dlgIsManually.value() == NoYes::No)
    {
        dlgFromDate.enabled(false);
        dlgToDate.enabled(false);    
    }

    return returnValue;
    }

}

UIBuilder provides a powerful way to customize and control parameters by manipulating dialog fields at runtime. 

By using the registerOverride() method in UIBuilder, you can control the behavior of dialog fields in a parameter form dynamically.