com.google.inject.grapher.graphviz.BindingEdgeFactory Maven / Gradle / Ivy
/**
* 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.inject.Inject;
import com.google.inject.grapher.BindingEdge;
import com.google.inject.internal.util.ImmutableList;
/**
* Graphviz-specific implementation of {@link BindingEdge.Factory}. Uses a
* {@link GraphvizEdgeAdaptor} to delegate to a {@link GraphvizEdge}.
*
* @author [email protected] (Pete Hopkins)
*/
public class BindingEdgeFactory implements BindingEdge.Factory> {
private final GraphvizRenderer renderer;
@Inject
public BindingEdgeFactory(GraphvizRenderer renderer) {
this.renderer = renderer;
}
public BindingEdge newBindingEdge(String fromId, String toId) {
GraphvizEdge edge = new GraphvizEdge(fromId, toId);
renderer.addEdge(edge);
return newAdaptor(edge);
}
protected GraphvizEdgeAdaptor newAdaptor(GraphvizEdge edge) {
return new GraphvizEdgeAdaptor(edge);
}
/**
* Adaptor class that converts {@link BindingEdge} methods to display
* operations on a {@link GraphvizEdge}.
*/
protected class GraphvizEdgeAdaptor implements BindingEdge {
protected final GraphvizEdge edge;
public GraphvizEdgeAdaptor(GraphvizEdge edge) {
this.edge = edge;
this.edge.setStyle(EdgeStyle.DASHED);
}
public void setType(BindingEdge.Type type) {
switch (type) {
case NORMAL:
edge.setArrowHead(ImmutableList.of(ArrowType.NORMAL_OPEN));
break;
case PROVIDER:
edge.setArrowHead(ImmutableList.of(ArrowType.NORMAL_OPEN, ArrowType.NORMAL_OPEN));
break;
case CONVERTED_CONSTANT:
edge.setArrowHead(ImmutableList.of(ArrowType.NORMAL_OPEN, ArrowType.DOT_OPEN));
break;
}
}
}
}