org.snaker.modules.base.helper.SnakerJsonHelper.java Source code

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Here is the source code for org.snaker.modules.base.helper.SnakerJsonHelper.java

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/* Copyright 2012-2013 the original author or authors.
 *
 * 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.snaker.modules.base.helper;

import java.util.ArrayList;
import java.util.List;

import org.apache.commons.lang.StringUtils;
import org.snaker.engine.entity.Task;
import org.snaker.engine.model.CustomModel;
import org.snaker.engine.model.NodeModel;
import org.snaker.engine.model.ProcessModel;
import org.snaker.engine.model.SubProcessModel;
import org.snaker.engine.model.TaskModel;
import org.snaker.engine.model.TransitionModel;

/**
 * @author yuqs
 * @version 1.0
 */
public class SnakerJsonHelper {
    //{"activeRects":{"rects":[{"paths":[],"name":"3"},{"paths":[],"name":"4"},{"paths":[],"name":"2"}]},"historyRects":{"rects":[{"paths":["TO 1"],"name":""},{"paths":["TO "],"name":"1"},{"paths":["TO 3","TO 4","TO 2"],"name":""}]}}
    public static String getActiveJson(List<Task> tasks) {
        StringBuffer buffer = new StringBuffer();
        buffer.append("{'activeRects':{'rects':[");
        for (Task task : tasks) {
            buffer.append("{'paths':[],'name':'");
            buffer.append(task.getDisplayName());
            buffer.append("'},");
        }
        buffer.deleteCharAt(buffer.length() - 1);
        buffer.append("]}}");
        buffer.append("");
        buffer.append("");
        return buffer.toString();
    }

    public static String getModelJson(ProcessModel model) {
        StringBuffer buffer = new StringBuffer();
        List<TransitionModel> tms = new ArrayList<TransitionModel>();
        for (NodeModel node : model.getNodes()) {
            for (TransitionModel tm : node.getOutputs()) {
                tms.add(tm);
            }
        }
        buffer.append("{");
        buffer.append(getNodeJson(model.getNodes()));
        buffer.append(getPathJson(tms));
        buffer.append("props:{props:{name:{value:'");
        buffer.append(model.getName());
        buffer.append("'},displayName:{value:'");
        buffer.append(model.getDisplayName());
        buffer.append("'},expireTime:{value:'");
        buffer.append(model.getExpireTime());
        buffer.append("'},instanceUrl:{value:'");
        buffer.append(model.getInstanceUrl());
        buffer.append("'},instanceNoClass:{value:'");
        buffer.append(model.getInstanceNoClass());
        buffer.append("'}}}}");
        return buffer.toString();
    }

    //start:{type:'start',text:{text:'start'}, attr:{ x:164, y:83, width:50, height:50}, props:{name:{value:'start'}}}
    public static String getNodeJson(List<NodeModel> nodes) {
        StringBuffer buffer = new StringBuffer();
        buffer.append("states: {");
        for (NodeModel node : nodes) {
            buffer.append(node.getName());
            buffer.append(getBase(node));
            buffer.append(getLayout(node));
            buffer.append(getProperty(node));
            buffer.append(",");
        }
        buffer.deleteCharAt(buffer.length() - 1);
        buffer.append("},");
        return buffer.toString();
    }

    public static String getPathJson(List<TransitionModel> tms) {
        StringBuffer buffer = new StringBuffer();
        buffer.append("paths:{");
        for (TransitionModel tm : tms) {
            buffer.append(tm.getName());
            buffer.append(":{from:'");
            buffer.append(tm.getSource().getName());
            buffer.append("',to:'");
            buffer.append(tm.getTarget().getName());
            buffer.append("', dots:[");
            if (StringUtils.isNotEmpty(tm.getG())) {
                String[] bendpoints = tm.getG().split(";");
                for (String bendpoint : bendpoints) {
                    buffer.append("{");
                    String[] xy = bendpoint.split(",");
                    buffer.append("x:").append(getNumber(xy[0]));
                    buffer.append(",y:").append(xy[1]);
                    buffer.append("},");
                }
                buffer.deleteCharAt(buffer.length() - 1);
            }
            buffer.append("],text:{text:'");
            buffer.append(tm.getDisplayName());
            buffer.append("'},textPos:{");
            if (StringUtils.isNotEmpty(tm.getOffset())) {
                String[] values = tm.getOffset().split(",");
                buffer.append("x:").append(values[0]).append(",");
                buffer.append("y:").append(values[1]).append("");
            }
            buffer.append("}, props:{text:{value:''}}}");
            buffer.append(",");
        }
        buffer.deleteCharAt(buffer.length() - 1);
        buffer.append("},");
        return buffer.toString();
    }

    private static String getBase(NodeModel node) {
        StringBuffer buffer = new StringBuffer();
        buffer.append(":{type:'");
        String nodeClass = node.getClass().getSimpleName().toLowerCase();
        buffer.append(nodeClass.substring(0, nodeClass.length() - 5));
        buffer.append("',text:{text:'");
        buffer.append(node.getDisplayName());
        buffer.append("'},");
        return buffer.toString();
    }

    private static String getProperty(NodeModel node) {
        StringBuffer buffer = new StringBuffer();
        buffer.append("props:{name:{value:'");
        buffer.append(node.getName());
        buffer.append("'},displayName:{value:'");
        buffer.append(node.getDisplayName());
        buffer.append("'}}}");
        return buffer.toString();
    }

    private static String getLayout(NodeModel node) {
        StringBuffer buffer = new StringBuffer();
        buffer.append("attr:{");
        String[] values = node.getLayout().split(",");
        buffer.append("x:").append(getNumber(values[0])).append(",");
        buffer.append("y:").append(values[1]).append(",");
        if ("-1".equals(values[2])) {
            if (node instanceof TaskModel || node instanceof CustomModel || node instanceof SubProcessModel) {
                values[2] = "100";
            } else {
                values[2] = "50";
            }
        }
        if ("-1".equals(values[3])) {
            values[3] = "50";
        }
        buffer.append("width:").append(values[2]).append(",");
        buffer.append("height:").append(values[3]);
        buffer.append("},");
        return buffer.toString();
    }

    private static int getNumber(String value) {
        if (value == null)
            return 0;
        try {
            return Integer.parseInt(value) + 180;
        } catch (Exception e) {
            return 0;
        }
    }
}