/*
* Copyright 2005 JBoss 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 org.drools.eclipse.flow.common.editor.action;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.drools.eclipse.flow.common.editor.GenericModelEditor;
import org.drools.eclipse.flow.common.editor.core.DefaultElementWrapper;
import org.drools.eclipse.flow.common.editor.core.ProcessWrapper;
import org.eclipse.draw2d.geometry.Dimension;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.draw2d.graph.DirectedGraph;
import org.eclipse.draw2d.graph.DirectedGraphLayout;
import org.eclipse.draw2d.graph.Edge;
import org.eclipse.draw2d.graph.Node;
import org.eclipse.jface.action.IAction;
import org.eclipse.ui.IEditorActionDelegate;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.actions.ActionDelegate;
import org.kie.definition.process.Connection;
import org.kie.definition.process.WorkflowProcess;
/**
* Action for auto layouting a RuleFlow.
*/
public class VerticalAutoLayoutAction extends ActionDelegate implements IEditorActionDelegate {
private IEditorPart editor;
public void run(IAction action) {
execute();
}
public void setActiveEditor(IAction action, IEditorPart targetEditor) {
editor = targetEditor;
}
private void execute() {
editor.doSave(null);
Map<Long, Node> mapping = new HashMap<Long, Node>();
DirectedGraph graph = createDirectedGraph(mapping);
DirectedGraphLayout layout = new DirectedGraphLayout();
layout.visit(graph);
for (Map.Entry<Long, Node> entry: mapping.entrySet()) {
Node node = entry.getValue();
DefaultElementWrapper elementWrapper = (DefaultElementWrapper)
((ProcessWrapper) ((GenericModelEditor) editor).getModel()).getElement(entry.getKey() + "");
elementWrapper.setConstraint(new Rectangle(node.x, node.y, node.width, node.height));
}
// TODO: implement changes as a command, so we can support undo
editor.doSave(null);
}
protected DirectedGraph createDirectedGraph(Map<Long, Node> mapping) {
DirectedGraph graph = new DirectedGraph();
WorkflowProcess process = (WorkflowProcess) ((ProcessWrapper) ((GenericModelEditor) editor).getModel()).getProcess();
for (org.kie.definition.process.Node processNode: process.getNodes()) {
Node node = new Node();
Integer width = (Integer) processNode.getMetaData().get("width");
Integer height = (Integer) processNode.getMetaData().get("height");
if (width == null || width <= 0) {
width = 80;
}
if (height == null || height <= 0) {
height = 40;
}
node.setSize(new Dimension(width, height));
graph.nodes.add(node);
mapping.put(processNode.getId(), node);
}
for (org.kie.definition.process.Node processNode: process.getNodes()) {
for (List<Connection> connections: processNode.getIncomingConnections().values()) {
for (Connection connection: connections) {
Node source = mapping.get(connection.getFrom().getId());
Node target = mapping.get(connection.getTo().getId());
graph.edges.add(new Edge(source, target));
}
}
}
return graph;
}
}