public interface GridValidation
 Default validation occurs in response to the user
 navigating between edit cells (see ListGrid.validateByCell) or
 whenever edited values are to be committed to the server for saving.  Standard validation can
 also be triggered for a cell or row programmatically at any time.
 When standard validation
 occurs, ListGridField.validators will be run on each cell to be validated.
 In addition to this
 standard behavior developers can add custom errors to fields via ListGrid.setFieldError() / ListGrid.setFieldError().
Editing, 
ListGrid.validateRow(int), 
ListGrid.validateCell(int, java.lang.String), 
com.smartgwt.client.widgets.grid.ListGrid#getRequiredFieldMessage, 
ListGrid.hasErrors(), 
ListGrid.rowHasErrors(int), 
ListGrid.cellHasErrors(int, java.lang.String), 
ListGrid.getRowErrors(int), 
ListGrid.getCellErrors(int, java.lang.String), 
ListGrid.setFieldError(int, java.lang.String, java.lang.String), 
ListGrid.setRowErrors(int, java.lang.Object), 
ListGrid.clearFieldError(int, int), 
com.smartgwt.client.widgets.grid.ListGridField#getValidators, 
ListGridField.getValidateOnChange(), 
ListGridField.getRequired(), 
ListGrid.getValidateByCell(), 
ListGrid.getValidateOnChange(), 
ListGrid.getNeverValidate()