org.apache.tapestry5.services
Interface BeanBlockSource

All Known Implementing Classes:
BeanBlockSourceImpl

@UsesConfiguration(value=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.ioc.Configuration)

Method Summary
 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


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