/** * 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 phopkins@gmail.com (Pete Hopkins) */ public class BindingEdgeFactory implements BindingEdge.Factory<String, BindingEdge<String>> { private final GraphvizRenderer renderer; @Inject public BindingEdgeFactory(GraphvizRenderer renderer) { this.renderer = renderer; } public BindingEdge<String> 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<String> { 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; } } } }