GwtWidgetBuilder (Metawidget API Documentation)

java.lang.Object
- org.metawidget.gwt.client.widgetbuilder.GwtWidgetBuilder

All Implemented Interfaces:

GwtValueAccessor, Immutable, WidgetBuilder<com.google.gwt.user.client.ui.Widget,GwtMetawidget>
```
public class GwtWidgetBuilder
extends Object
implements WidgetBuilder<com.google.gwt.user.client.ui.Widget,GwtMetawidget>, GwtValueAccessor
```
WidgetBuilder for GWT environments.
Creates native GWT Widgets, such as TextBox and ListBox, to suit the inspected fields.

Author:

Richard Kennard

Constructor Summary

Constructors
Constructor and Description

GwtWidgetBuilder()

Constructors
Constructor and Description
`GwtWidgetBuilder()`

Method Summary

Methods
Modifier and Type	Method and Description
`com.google.gwt.user.client.ui.Widget`	`buildWidget(String elementName, Map<String,String> attributes, GwtMetawidget metawidget)` Builds the most appropriate widget for this business field.
`Object`	`getValue(com.google.gwt.user.client.ui.Widget widget)`
`boolean`	`setValue(com.google.gwt.user.client.ui.Widget widget, Object value)` Sets the given Widget to the specified value.

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

- Constructor Detail
  - GwtWidgetBuilder
```
public GwtWidgetBuilder()
```
- Method Detail
  - getValue
```
public Object getValue(com.google.gwt.user.client.ui.Widget widget)
```
    Specified by:
    
    getValue in interface GwtValueAccessor
  - setValue
```
public boolean setValue(com.google.gwt.user.client.ui.Widget widget,
               Object value)
```
    Description copied from interface: GwtValueAccessor
    
    Sets the given Widget to the specified value.
    
    Specified by:
    
    setValue in interface GwtValueAccessor
    
    Returns:
    true if the Widget was recognised and its value set
  - buildWidget
```
public com.google.gwt.user.client.ui.Widget buildWidget(String elementName,
                                               Map<String,String> attributes,
                                               GwtMetawidget metawidget)
```
    Description copied from interface: WidgetBuilder
    
    Builds the most appropriate widget for this business field.
    
    Specified by:
    
    buildWidget in interface WidgetBuilder<com.google.gwt.user.client.ui.Widget,GwtMetawidget>
    
    Parameters:
    elementName - XML node name of the business field. Typically 'entity', 'property' or 'action'. Never null
    attributes - attributes of the business field to build a widget for. Never null. This Map is modifiable - changes will be passed to subsequent WidgetBuilders, WidgetProcessors and Layouts
    metawidget - the parent Metawidget. Never null
    
    Returns:
    the built widget. To suppress a field, return a Stub. To defer to the next WidgetBuilder in the pipeline, return null. If there are no more WidgetBuilders in the pipeline, will create a nested Metawidget. This approach (return Stub for no field, null for nested Metawidget) as opposed to the other way around (return null for no field, return Metawidget for nested Metawidget) works better for those UI frameworks that cannot instatiate widgets without adding them to containers (eg. SWT)

Class GwtWidgetBuilder

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

GwtWidgetBuilder

Method Detail

getValue

setValue

buildWidget