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/**
* Copyright (C) 2008 Google Inc.
*
* 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.
*/
package com.google.inject.grapher.graphviz;
import com.google.common.collect.ImmutableList;
import com.google.inject.Inject;
import com.google.inject.grapher.DependencyEdge;
import com.google.inject.spi.InjectionPoint;
/**
* Graphviz-specific implementation of {@link DependencyEdge.Factory}. Uses a
* {@link GraphvizEdgeAdaptor} to delegate to a {@link GraphvizEdge}.
*
* @author phopkins@gmail.com (Pete Hopkins)
*/
public class DependencyEdgeFactory
implements DependencyEdge.Factory<String, DependencyEdge<String>> {
private final GraphvizRenderer renderer;
private final PortIdFactory portIdFactory;
@Inject
public DependencyEdgeFactory(GraphvizRenderer renderer, PortIdFactory portIdFactory) {
this.renderer = renderer;
this.portIdFactory = portIdFactory;
}
public DependencyEdge<String> newDependencyEdge(String fromId,
InjectionPoint fromPoint, String toId) {
GraphvizEdge edge = new GraphvizEdge(fromId, toId);
if (fromPoint == null) {
edge.setTailPortId("header");
} else {
edge.setTailPortId(portIdFactory.getPortId(fromPoint.getMember()));
}
renderer.addEdge(edge);
return newAdaptor(edge);
}
protected GraphvizEdgeAdaptor newAdaptor(GraphvizEdge edge) {
return new GraphvizEdgeAdaptor(edge);
}
/**
* Adaptor class that converts {@link DependencyEdge} methods to display
* operations on a {@link GraphvizEdge}.
*/
protected class GraphvizEdgeAdaptor implements DependencyEdge<String> {
protected final GraphvizEdge edge;
public GraphvizEdgeAdaptor(GraphvizEdge edge) {
this.edge = edge;
this.edge.setArrowHead(ImmutableList.of(ArrowType.NORMAL));
this.edge.setTailCompassPoint(CompassPoint.EAST);
}
}
}
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