package org.apache.beehive.controls.runtime.generator;
/*
* Copyright 2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* $Header:$
*/
import com.sun.mirror.declaration.FieldDeclaration;
import com.sun.mirror.type.InterfaceType;
import com.sun.mirror.type.TypeMirror;
import org.apache.beehive.controls.runtime.generator.apt.TwoPhaseAnnotationProcessor;
/**
* The AptContextField class contains information about a field referring to a contextual
* service with an AptControlImplementation class.
*/
public class AptContextField extends AptEventField
{
/**
* Base constructor, protected so only a custom subclass can invoke
* @param controlImpl the declaring ControlImplementation
*/
public AptContextField(AptControlImplementation controlImpl, FieldDeclaration fieldDecl,
TwoPhaseAnnotationProcessor ap)
{
super(fieldDecl);
_controlImpl = controlImpl;
_ap = ap;
};
/**
* Initializes a ControlInterface associated with this context field. Because
* contextual services can expose both APIs and events, they are similar to controls.
*/
protected AptControlInterface initControlInterface()
{
TypeMirror fieldType = _fieldDecl.getType();
if (! (fieldType instanceof InterfaceType))
{
_ap.printError( _fieldDecl, "context.field.badinterface" );
return null;
}
//
// For contextual services, the declared type of the field is always the public
// interface for the contextual service.
//
return new AptControlInterface(((InterfaceType)_fieldDecl.getType()).getDeclaration(),
_ap);
}
private AptControlImplementation _controlImpl;
private TwoPhaseAnnotationProcessor _ap;
}