org.apache.velocity.runtime.directive

Class BlockMacro

java.lang.Object

org.apache.velocity.runtime.directive.Directive

org.apache.velocity.runtime.directive.Block

org.apache.velocity.runtime.directive.BlockMacro

All Implemented Interfaces:

Cloneable, DirectiveConstants

public class BlockMacro
extends Block

BlockMacro directive is used to invoke Velocity macros with normal parameters and a macro body.

The macro can then refer to the passed body AST. This directive can be used as a "decorator". Body AST can contain any valid Velocity syntax. An example:

 #set($foobar = "yeah!")

 #macro(strong $txt)
 <strong>$bodyContent</strong> $txt
 #end

 #@strong($foobar)
 <u>This text is underlined and bold</u>
 #end
 

Will print:

 <strong><u>This text is underlined and bold<u></strong> yeah!
 

bodyContent reference name is configurable (see velocity.properties).

Since:

1.7

Version:

$Id$

Author:

Jarkko Viinamaki

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.velocity.runtime.directive.Block

Block.Reference

Field Summary

Fields inherited from class org.apache.velocity.runtime.directive.Block

block, key, log, maxDepth

Fields inherited from class org.apache.velocity.runtime.directive.Directive

rsvc

Fields inherited from interface org.apache.velocity.runtime.directive.DirectiveConstants

BLOCK, LINE

Constructor Summary

Constructors

Constructor and Description
BlockMacro()

Method Summary

Modifier and Type	Method and Description
String	getName() Return the name of this directive.
String	getScopeName() Override to use the macro name, since it is within an #@myMacro() ...
void	init(RuntimeServices rs, String macroName, InternalContextAdapter context, Node node) Initializes the directive.
boolean	render(InternalContextAdapter context, Writer writer, Node node) Renders content using the selected macro and the passed AST body.

Methods inherited from class org.apache.velocity.runtime.directive.Block

getType, id, init, render

Methods inherited from class org.apache.velocity.runtime.directive.Directive

checkArgs, getColumn, getLine, getTemplate, getTemplateName, isScopeProvided, makeScope, postRender, preRender, setLocation, setLocation

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BlockMacro

public BlockMacro()

Method Detail

getName

public String getName()

Description copied from class: Directive

Return the name of this directive.

Specified by:

getName in class Directive

Returns:

The name of this directive.

getScopeName

public String getScopeName()

Override to use the macro name, since it is within an #@myMacro() ... #end block that the scope in question would be used.

Overrides:

getScopeName in class Directive

Returns:

the name to be used when a scope control is provided for this directive.

init

public void init(RuntimeServices rs,
                 String macroName,
                 InternalContextAdapter context,
                 Node node)
          throws TemplateInitException

Initializes the directive.

Parameters:

rs -

macroName -

context -

node -

Throws:

TemplateInitException

render

public boolean render(InternalContextAdapter context,
                      Writer writer,
                      Node node)
               throws IOException

Renders content using the selected macro and the passed AST body.

Specified by:

render in class Directive

Parameters:

context -

writer -

node -

Returns:

True if the directive rendered successfully.

Throws:

IOException