83 lines
2.8 KiB
Java
83 lines
2.8 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* $Header:$
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*/
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package org.apache.beehive.controls.runtime.generator;
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import com.sun.mirror.declaration.MethodDeclaration;
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import com.sun.mirror.type.VoidType;
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import org.apache.beehive.controls.runtime.generator.apt.TwoPhaseAnnotationProcessor;
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/**
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* The AptEvent class represents a control Property where the event attributes
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* are derived using APT metadata
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*/
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public class AptEvent extends AptMethod
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{
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/**
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* Constructs a new AptEvent instance from APT metadata
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* @param eventSet the declaring EventSet
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* @param eventDecl the event annotation type element declaration
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*/
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public AptEvent(AptEventSet eventSet, MethodDeclaration eventDecl, TwoPhaseAnnotationProcessor ap)
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{
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super(eventDecl, ap);
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_eventSet = eventSet;
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_eventDecl = eventDecl;
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//
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// If the event is in multicast event set but does not return 'void', then generate
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// an error. Only unicast events can have a return value, to avoid ambiguity over
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// which listener gets to provide the value.
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//
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if (!eventSet.isUnicast() && !(eventDecl.getReturnType() instanceof VoidType))
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{
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ap.printError( eventDecl, "eventset.illegal.multicast" );
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}
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}
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/**
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* Returns the name of the static field that holds the name of this method.
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*/
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public String getMethodField()
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{
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//
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// Both the event set and event name must be used for the generated field to avoid
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// conflicts between same-named events in different event sets.
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//
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StringBuffer sb = new StringBuffer();
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sb.append("_");
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sb.append(_eventSet.getShortName());
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sb.append("_");
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sb.append(getName());
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int methodIndex = getIndex();
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if (methodIndex != -1)
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sb.append(methodIndex);
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sb.append("Event");
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return sb.toString();
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}
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/**
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* Returns the EventSet associated with the event
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*/
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public AptEventSet getEventSet() { return _eventSet; }
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MethodDeclaration _eventDecl;
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private AptEventSet _eventSet;
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}
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