Bug 120215 BPS 40 - DE changes
1. all report elements' properties will be overidable with an expression. The binding expression will have access to report parameter, and static BIRT report objects only. 2) DE will provide api to get property binding expression for a given property on a report element handle. It's up to the engine to evaluate the property binding expression when the report gets executed. DE API changes -------------------------- a) DesignElementHandle will support the following two methods. - String (expression) GetPropertyBinding ( propertyName ) - void SetPropertyBinding( propertyName , String (expression) ) // Note get and set property methods are wrapper classes which actually use reportDesignHandle methods to retrive and set the property binding. b) rom.def changes Property bindings contains a list of binding expressions. ReportDesign element will be enhanced to support a new property called. <Property canInherit="false" detailType="propertyBinding" displayNameID="Element.Module.propertyBindings" isList="true" name="propertyBindings" type="structure"/> A new datatype - <Structure name="propertybinding"> <Member name="name" since="2.0" type="name"/> <Member name="id" returnType="any" since="2.0" type="string"/> // Use the unique id used to identify an element. <Member name="value" returnType="string" since="2.0" type="expression"/> </Structure>
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/DesignElementHandle.java
if ( style == null )
			setStyleElement( null );
		else
			setStyleElement( (StyleElement) style.getElement( ) );
	}
	/**
	 * Returns a handle to work with the style properties of this element. Use a
	 * style handle to work with the specific getter/setter methods for each
	 * style property. The style handle is not necessary to work with style
	 * properties generically.
	 * <p>
	 * Note a key difference between this method and the
	 * <code>getStyle( )</code> method. This method returns a handle to the
	 * <em>this</em> element. The <code>getStyle( )</code> method returns a
	 * handle to the shared style, if any, that this element references.
	 * 
	 * @return a style handle to work with the style properties of this element.
	 *         Returns <code>null</code> if this element does not have style
	 *         properties.
	 */
	public StyleHandle getPrivateStyle( )
	{
		if ( getDefn( ).hasStyle( ) )
			return new PrivateStyleHandle( module, getElement( ) );
		return null;
	}
	/**
	 * Returns the name of this element. Returns <code>null</code> if the
	 * element does not have a name. Many elements do not require a name. The
	 * name does not inherit. If this element does not have a name, it will not