# Extended Item Presentation-Time Support

###### Identifier:

org.eclipse.birt.report.engine.reportitempresentation

###### Since:

1.0

###### Description:

This extension point specifies how the new report item should be instantiated, processed, and rendered at presentation (rendering) time. In a server environment, the plugin registry uses this extension point registration to discover supported report item extensions.

###### Configuration Markup:

<!ELEMENT extension (reportItem+)>

<!ATTLIST extension

point CDATA #REQUIRED

id CDATA #IMPLIED

name CDATA #IMPLIED

>

- point - a fully qualified identifier of the target extension point
- id - an optional identifier of the extension instance
- name - an optional name of the extension instance

<!ELEMENT reportItem EMPTY>

<!ATTLIST reportItem

name CDATA #REQUIRED

class CDATA #REQUIRED

supportedFormats CDATA #IMPLIED

>

- name - the unique name of the extended item, i.e., "org.eclipse.birt.chart" for BIRT supplied chart extension.
- class - the java class that implements the `IReportItemPresentation`
- supportedFormats - The supported rendering formats for this extended item. The value for this attribute is a comma-separated string, i.e., "HTML,PDF,EXCEL', etc. The string is case-insensitive.

###### Examples:

The following is a sample usage of the reportItemPresentation extension point:

    <extension point="org.eclipse.birt.report.engine.reportitempresentation"
    name="chart presentation extension">
      <reportItem name="org.eclipse.birt.chart" class="org.eclipse.birt.report.chartitem.ChartPresentation"
      supportedFormats="FO,HTML,PDF"/>
     </extension>

###### Supplied Implementation:

Chart as an extended item

Copyright (c) 2005 Actuate Corporation. All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is available at http://www.eclipse.org/legal/epl-v10.html
Contributors: Actuate Corporation - initial API and implementation