ParamField (Geotools modules 31-SNAPSHOT API)

Object
- ParamField

Direct Known Subclasses:

JDoubleField, JField, JFileField, JGeometryField, JURLField
```
public abstract class ParamField
extends Object
```
Super class that provides additional helper methods useful when implementing your own ParamWidget.

Author:

gdavis

Field Summary

Fields
Modifier and Type Field Description

protected Parameter<?> parameter

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract void`	`addListener(JWizard.Controller controller)`
`static ParamField`	`create(Parameter<?> parameter)`	Factory method creating the appropriate ParamField for the supplied Param.
`abstract JComponent`	`doLayout()`	Called to build the widget, initialize it (setting defaults or whatever) and setup any listeners needed for validation of the widget value.
`abstract Object`	`getValue()`	Returns the current value of the widget.
`abstract void`	`removeListener(JWizard.Controller controller)`
`abstract void`	`setValue(Object value)`	Sets the value of the widget.
`abstract boolean`	`validate()`	Validates the current value of the widget, returns false if not valid, true otherwise

Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - parameter
```
protected final Parameter<?> parameter
```
- Method Detail
  - doLayout
```
public abstract JComponent doLayout()
```
    Called to build the widget, initialize it (setting defaults or whatever) and setup any listeners needed for validation of the widget value. The returned JComponent will contain the widget for editing.
    
    Returns:
    
    JComponent or null if error
  - validate
```
public abstract boolean validate()
```
    Validates the current value of the widget, returns false if not valid, true otherwise
    
    Returns:
    
    boolean if validated
  - setValue
```
public abstract void setValue(Object value)
```
    Sets the value of the widget.
    
    Parameters:
    
    value - an object containing the value to set for the widget
  - addListener
```
public abstract void addListener(JWizard.Controller controller)
```
  - removeListener
```
public abstract void removeListener(JWizard.Controller controller)
```
  - getValue
```
public abstract Object getValue()
```
    Returns the current value of the widget.
    
    Returns:
    
    Object representing the current value of the widget
  - create
```
public static ParamField create(Parameter<?> parameter)
```
    Factory method creating the appropriate ParamField for the supplied Param.