dw.web
Class FormField
Object
dw.web.FormElement
dw.web.FormField
Represents a field in a form.
Properties
checked  :  boolean  (Read Only)
Identifies if the current selected state of this field is checked. In case of a boolean field the method directly represent the boolean value. In case of a string or int field, the method returns true if the current value matched with the value specified as "selected-value". In this way a selected status can be as determined for non-boolean fields.
description  :  String  (Read Only)
An optinal description for the field.
error  :  String  (Read Only)
The error text that will be shown to the user when the field is invalid. The error messages that may be returned by this method are defined in the form field definition under the following attribute names:
  • missing-error
  • parse-error
  • range-error
  • value-error
The framework performs error checks in a specific order, and so if there are multiple errors for a single FormField, the following sequence defines which error is returned:
  • When submitting a form entry, whitespace is first trimmed from user entry and the entry is parsed into native data type (boolean, date, integer, number, or string). A regex, if defined, is also matched against the input. If there is an error while parsing or matching with regex, "parse-error" is set as error.
  • If field was marked as "mandatory" but there is no entry, "missing-error" is returned
  • The min/max and minlength/maxlength checks are performed. If test failed, "range-error" is returned.
  • value-error or form-error are returned when "invalidate()" was called programatically (or pipelet InvalidateFormElement is used)
If the field is valid, this method returns null. If no error message was specified in the form field definition, this method also returns null.
static FIELD_TYPE_BOOLEAN  :  Number
indicates a boolean/checkbox field in the form definition
static FIELD_TYPE_DATE  :  Number
indicates a date field in the form definition
static FIELD_TYPE_INTEGER  :  Number
indicates an integer field in the form definition
static FIELD_TYPE_NUMBER  :  Number
indicates a number field in the form definition
static FIELD_TYPE_STRING  :  Number
indicates a string field in the form definition
htmlValue  :  String
The current external string representation of the value in this field.
label  :  String  (Read Only)
An optional label text for the field.
mandatory  :  boolean  (Read Only)
Indicates if the field is mandatory.
maxLength  :  Number  (Read Only)
The maximum length for the form field. A maximum length can be specified for all form data types, but is only used to validate fields of type "string". For other data types the value is just provided as an easy way to dynamically format the user interface. If not specified in the form definition the default minimum length is Integer.MAX_VALUE.
maxValue  :  Object  (Read Only)
The maximum value for a form field. A maximum value is only applicable for fields with the data type "int", "number" and "date". If a maximum value was not specified in the form definition the method returns null.
minLength  :  Number  (Read Only)
The minimum length for the form field. A minimum length can be specified for all form data types, but is only used to validate fields of type "string". For other data types the value is just provided as an easy way to dynamically format the user interface. If not specified in the form definition the default minimum length is 0.
minValue  :  Object  (Read Only)
The minimum value for a form field. A minimum value is only applicable for fields with the data type "int", "number" and "date". If a minimum value was not specified in the form definition the method returns null.
options  :  FormFieldOptions
A list of possible values for this field. The method is typically used to render a selection list or to render radio buttons.
regEx  :  String  (Read Only)
An optional regular expression pattern, which was set in the form definition. A pattern is only used for validation only for string fields. If no pattern was set, the method returns null.
selected  :  boolean  (Read Only)
Identifies if the current selected state of this field is selected. In case of a boolean field the method directly represent the boolean value. In case of a string or int field, the method returns true if the current value matched with the value specified as "selected-value". In this way a selected status can be as determined for non-boolean fields.
selectedOption  :  FormFieldOption  (Read Only)
The selected options or null if the field has no option or non is selected.
selectedOptionObject  :  Object  (Read Only)
The object that was optionally associated with the currently selected option.
type  :  Number  (Read Only)
The method returns the type of the field. The type is one of the FIELD_TYPE constants defined in this class.
value  :  Object
The internal value representation, which can be a string, a number, a boolean or a date.
Constructor Summary
This class does not have a constructor, so you cannot create it directly.
Method Summary
getDescription() : String
Returns an optinal description for the field.
getError() : String
Returns the error text that will be shown to the user when the field is invalid.
getHtmlValue() : String
Returns the current external string representation of the value in this field.
getLabel() : String
Returns an optional label text for the field.
getMaxLength() : Number
Returns the maximum length for the form field.
getMaxValue() : Object
Returns the maximum value for a form field.
getMinLength() : Number
Returns the minimum length for the form field.
getMinValue() : Object
Returns the minimum value for a form field.
getOptions() : FormFieldOptions
Returns a list of possible values for this field.
getRegEx() : String
Returns an optional regular expression pattern, which was set in the form definition.
getSelectedOption() : FormFieldOption
Returns the selected options or null if the field has no option or non is selected.
getSelectedOptionObject() : Object
Returns the object that was optionally associated with the currently selected option.
getType() : Number
The method returns the type of the field.
getValue() : Object
Returns the internal value representation, which can be a string, a number, a boolean or a date.
isChecked() : boolean
Identifies if the current selected state of this field is checked.
isMandatory() : boolean
Indicates if the field is mandatory.
isSelected() : boolean
Identifies if the current selected state of this field is selected.
setHtmlValue(htmlValue : String) : void
A form field has two value representations, the HTML value and the plain value.
setOptions(optionValues : Map) : void
The method can be called to update an option list based on the given key and values in the given map.
setOptions(optionValues : Map, begin : Number, end : Number) : void
The method can be called to update an option list based on the given key and values in the given map.
setOptions(optionValues : Iterator, begin : Number, end : Number) : void
The method can be called to update an option list based on the given iterator with objects.
setOptions(optionValues : Iterator) : void
The method can be called to update an option list based on the given iterator with objects.
setValue(value : Object) : void
Sets the typed value of the field.
Methods inherited from class FormElement
Methods inherited from class Object
Method Detail
getDescription
getDescription() : String
Returns an optinal description for the field.
Returns:
an optional description for the field.

getError
getError() : String
Returns the error text that will be shown to the user when the field is invalid. The error messages that may be returned by this method are defined in the form field definition under the following attribute names:
  • missing-error
  • parse-error
  • range-error
  • value-error
The framework performs error checks in a specific order, and so if there are multiple errors for a single FormField, the following sequence defines which error is returned:
  • When submitting a form entry, whitespace is first trimmed from user entry and the entry is parsed into native data type (boolean, date, integer, number, or string). A regex, if defined, is also matched against the input. If there is an error while parsing or matching with regex, "parse-error" is set as error.
  • If field was marked as "mandatory" but there is no entry, "missing-error" is returned
  • The min/max and minlength/maxlength checks are performed. If test failed, "range-error" is returned.
  • value-error or form-error are returned when "invalidate()" was called programatically (or pipelet InvalidateFormElement is used)
If the field is valid, this method returns null. If no error message was specified in the form field definition, this method also returns null.
Returns:
the error text that will be shown to the user when the field is invalid.

getHtmlValue
getHtmlValue() : String
Returns the current external string representation of the value in this field.
Returns:
the current external string representation of the value in this field.

getLabel
getLabel() : String
Returns an optional label text for the field.
Returns:
an optional label text for the field.

getMaxLength
getMaxLength() : Number
Returns the maximum length for the form field. A maximum length can be specified for all form data types, but is only used to validate fields of type "string". For other data types the value is just provided as an easy way to dynamically format the user interface. If not specified in the form definition the default minimum length is Integer.MAX_VALUE.
Returns:
maximum length or MAX_VALUE

getMaxValue
getMaxValue() : Object
Returns the maximum value for a form field. A maximum value is only applicable for fields with the data type "int", "number" and "date". If a maximum value was not specified in the form definition the method returns null.
Returns:
maximum value or null

getMinLength
getMinLength() : Number
Returns the minimum length for the form field. A minimum length can be specified for all form data types, but is only used to validate fields of type "string". For other data types the value is just provided as an easy way to dynamically format the user interface. If not specified in the form definition the default minimum length is 0.
Returns:
minimum length or 0

getMinValue
getMinValue() : Object
Returns the minimum value for a form field. A minimum value is only applicable for fields with the data type "int", "number" and "date". If a minimum value was not specified in the form definition the method returns null.
Returns:
minimum value or null

getOptions
getOptions() : FormFieldOptions
Returns a list of possible values for this field. The method is typically used to render a selection list or to render radio buttons.
Returns:
a list of possible values for this field.

getRegEx
getRegEx() : String
Returns an optional regular expression pattern, which was set in the form definition. A pattern is only used for validation only for string fields. If no pattern was set, the method returns null.
Returns:
the regular expression used for validation or null

getSelectedOption
getSelectedOption() : FormFieldOption
Returns the selected options or null if the field has no option or non is selected.
Returns:
the selected options or null if the field has no option or non is selected.

getSelectedOptionObject
getSelectedOptionObject() : Object
Returns the object that was optionally associated with the currently selected option.
Returns:
the object that was optionally associated with the currently selected option.

getType
getType() : Number
The method returns the type of the field. The type is one of the FIELD_TYPE constants defined in this class.
Returns:
the type of the form field

getValue
getValue() : Object
Returns the internal value representation, which can be a string, a number, a boolean or a date.
Returns:
the internal value representation, which can be a string, a number, a boolean or a date.

isChecked
isChecked() : boolean
Identifies if the current selected state of this field is checked. In case of a boolean field the method directly represent the boolean value. In case of a string or int field, the method returns true if the current value matched with the value specified as "selected-value". In this way a selected status can be as determined for non-boolean fields.
Returns:
true if current selected state of this field is checked.

isMandatory
isMandatory() : boolean
Indicates if the field is mandatory.
Returns:
true if the field is mandatory, false otherwise.

isSelected
isSelected() : boolean
Identifies if the current selected state of this field is selected. In case of a boolean field the method directly represent the boolean value. In case of a string or int field, the method returns true if the current value matched with the value specified as "selected-value". In this way a selected status can be as determined for non-boolean fields.
Returns:
true if current selected state of this field is checked.

setHtmlValue
setHtmlValue(htmlValue : String) : void
A form field has two value representations, the HTML value and the plain value. The HTML value is always a string representation of the field value. The plain value is the fully typed and validated field value. The sets the HTML value for a field. The method is typically called from the HTTP POST processing framework. The method than parses, validates and assigns the value to the typed field value (see getValue()). If the value is invalid the typed field value is set to null and the valid flag is set to false. The error property contains an error message for the form.
Parameters:
htmlValue - the HTML value to use.

setOptions
setOptions(optionValues : Map) : void
The method can be called to update an option list based on the given key and values in the given map.
Parameters:
optionValues - a Map with the values for the option list

setOptions
setOptions(optionValues : Map, begin : Number, end : Number) : void
The method can be called to update an option list based on the given key and values in the given map. The method also expects and index range. This index range only makes sense when the Map is a SortedMap.
Parameters:
optionValues - a Map with the values for the option list.
begin - the index of the first element to use as option value.
end - the last of the last element to use as option value.

setOptions
setOptions(optionValues : Iterator, begin : Number, end : Number) : void
The method can be called to update an option list based on the given iterator with objects. The option list is updated using the bindings specified in the form definition. If no bindings are specified in the form definition the elements are interpreted as pure strings.
Parameters:
optionValues - an iterator hows elements are used as option values
begin - the index of the first element to use as option value
end - the last of the last element to use as option value

setOptions
setOptions(optionValues : Iterator) : void
The method can be called to update an option list based on the given iterator with objects.
Parameters:
optionValues - an iterator whose elements are used as option values

setValue
setValue(value : Object) : void
Sets the typed value of the field. The value is than immediately formatted into the external string representation, which is availble through the getHtmlValue() method. Also the valid flag is set to true. The actual value is not validated against the rules defined in the form definition. The method is typically used to directly set a typed value and to circumvent the validation rules. The type of the argument must match with the type of the field.
Parameters:
value - the value to set.

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