Custom Validation Message for CustomValidator in ListGridField

[carlossierra]

Hi Isomorphic.

I have a CustomValidator associated to a ListGridField which is working as expected, generating validation errors when some specific condition is not met by the values entered in the field. But now I want to display custom messages explaining the cause of the error (which for my real case, are several), but I can't seem to be able to get it to work. I read several posts here in the forums, and they all talk about the setFieldError api, which is the one I am using, but the custom error message simply won't show.

Here is a simple test case:

public class TestCases implements EntryPoint {  
    
    private static final String PARAMETER_FIELD = "Parameter";
    private static final String GROUP_FIELD = "Group";
    private static final String VALUE_FIELD = "Value";
    
    private ListGrid grid = new ListGrid();
    
    public void onModuleLoad() {       
        configureListGrid(grid);
        setGridFields();
        setGridData();
        grid.show();
        enableAdminConsole();
    }

    private void configureListGrid(ListGrid grid) {
        grid.setWidth(400);
        grid.setHeight(300);
        grid.setCanEdit(true);
    }
    
    private void setGridFields() {
        
        CustomValidator validator = new CustomValidator() {
            @Override
            protected boolean condition(Object rawValue) {
                Record validatedRecord = getRecord();
                String parameterName = validatedRecord.getAttribute(PARAMETER_FIELD);
                return isValid(parameterName, rawValue);
            }
            
            private boolean isValid(String parameterName, Object rawValue) {
                try {
                    int value = Integer.parseInt((String) rawValue);
                    SC.say("Value: " + value);
                    if ((value < 0) || (value > 100)){
                        return false;
                    }
                } catch (Exception e) {
                    RecordList gridRecords = grid.getDataAsRecordList();
                    int validatedRow = gridRecords.findIndex(PARAMETER_FIELD, parameterName);
                    SC.say("Row: " + validatedRow);
                    grid.setFieldError(validatedRow, VALUE_FIELD, "Wrong number format");
                    grid.refreshRow(validatedRow);
                    return false;
                }
                return true;
            }
        };
        
        ListGridField group = new ListGridField(GROUP_FIELD);
        group.setCanEdit(false);
        ListGridField parameter = new ListGridField(PARAMETER_FIELD);
        parameter.setCanEdit(false);
        ListGridField value = new ListGridField(VALUE_FIELD);
        value.setValidators(validator);
        grid.setFields(group, parameter, value);
    }
    
    private void setGridData() {  
        RecordList parameters = new RecordList();
        for (int i = 1; i < 5; i++) {
               Record parameter = new Record();
               int group = ((i % 2) != 0) ? 1 : 2;
               parameter.setAttribute(GROUP_FIELD, "Group" + group);
               parameter.setAttribute(PARAMETER_FIELD, "Parameter" + i);
               parameters.add(parameter);
        }
        grid.setData(parameters);
    }
}

So the question is what am I missing here? Maybe something in specific place I am calling setFieldError? Any specific required call sequence I need to be aware of?

SmartGWT 6.0-p20160622. Chrome 52.0.2743.116 m.

[Isomorphic]

You want Validator.setErrorMessage().

setFieldError() would be attempting to set an error message for something other than validation. Doing this in the middle of validation is invalid.

[carlossierra]

Thanks Isomorphic. Indeed, this solved the issue. Here is the full working code in case anyone is interested (it shows different errors according to the validation that failed):

public class TestCases implements EntryPoint {  
    
    private static final String PARAMETER_FIELD = "Parameter";
    private static final String GROUP_FIELD = "Group";
    private static final String VALUE_FIELD = "Value";
    
    private ListGrid grid = new ListGrid();
    
    public void onModuleLoad() {       
        configureListGrid(grid);
        setGridFields();
        setGridData();
        grid.show();
        enableAdminConsole();
    }

    private void configureListGrid(ListGrid grid) {
        grid.setWidth(400);
        grid.setHeight(300);
        grid.setCanEdit(true);
    }
    
    private void setGridFields() {
        
        CustomValidator validator = new CustomValidator() {
            @Override
            protected boolean condition(Object rawValue) {
                Record validatedRecord = getRecord();
                String parameterName = validatedRecord.getAttribute(PARAMETER_FIELD);
                return isValid(parameterName, rawValue);
            }
            
            private boolean isValid(String parameterName, Object rawValue) {
                try {
                    int value = Integer.parseInt((String) rawValue);
                    if ((value < 0) || (value > 100)){
                        setErrorMessage("Value outside limits");
                        return false;
                    }
                } catch (Exception e) {
                    setErrorMessage("Wrong number format");
                    return false;
                }
                return true;
            }
        };
        
        ListGridField group = new ListGridField(GROUP_FIELD);
        group.setCanEdit(false);
        ListGridField parameter = new ListGridField(PARAMETER_FIELD);
        parameter.setCanEdit(false);
        ListGridField value = new ListGridField(VALUE_FIELD);
        value.setValidators(validator);
        grid.setFields(group, parameter, value);
    }
    
    private void setGridData() {  
        RecordList parameters = new RecordList();
        for (int i = 1; i < 5; i++) {
               Record parameter = new Record();
               int group = ((i % 2) != 0) ? 1 : 2;
               parameter.setAttribute(GROUP_FIELD, "Group" + group);
               parameter.setAttribute(PARAMETER_FIELD, "Parameter" + i);
               parameters.add(parameter);
        }
        grid.setData(parameters);
    }
}