BeanBlockSource (Tapestry API - 5.7.2)乐学网一站式学习平台

All Known Implementing Classes:

BeanBlockSourceImpl
```
@UsesConfiguration(BeanBlockContribution.class)
public interface BeanBlockSource
```
A source of Blocks used to display the properties of a bean (used by the Grid component), or to edit the properties of a bean (used by the BeanEditForm component). Contributions to this service (a configuration of BeanBlockContributions) define what properties may be editted. Blocks are accessed in terms of a data type a string that identifies the type of data to be editted, such as "string", "date", "boolean", etc. Tapestry contributes a number of default data types and corresponding edit and display blocks. The BeanBlockOverrideSource service allows these to be overridden.

See Also:

DataTypeAnalyzer, TapestryModule.provideDefaultBeanBlocks(org.apache.tapestry5.commons.Configuration)

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Block`	`getDisplayBlock(String datatype)`	Returns a block which can be used to render output for the given data type.
`Block`	`getEditBlock(String datatype)`	Returns a block which can be used to render an editor for the given data type, in the form of a field label and input field.
`boolean`	`hasDisplayBlock(String datatype)`	Checks to see if there is a display block for the indicated data type.

- Method Detail
  - getEditBlock
```
Block getEditBlock(String datatype)
```
    Returns a block which can be used to render an editor for the given data type, in the form of a field label and input field.
    
    Parameters:
    
    datatype - logical name for the type of data to be displayed
    
    Returns:
    
    the Block
    
    Throws:
    
    RuntimeException - if no appropriate block is available
  - getDisplayBlock
```
Block getDisplayBlock(String datatype)
```
    Returns a block which can be used to render output for the given data type.
    
    Parameters:
    
    datatype - logical name for the type of data to be displayed
    
    Returns:
    
    the Block
    
    Throws:
    
    RuntimeException - if no appropriate block is available
  - hasDisplayBlock
```
boolean hasDisplayBlock(String datatype)
```
    Checks to see if there is a display block for the indicated data type.
    
    Parameters:
    
    datatype - to check for
    
    Returns:
    
    true if a block is available