DotNode.java

package flowchat;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
 * 流程图节点类
 * @author 华硕
 *
 */

public class DotNode {
	private int id;//节点的id，dot文件中作为节点的唯一标识
	private String text;//将显示在节点框中的内容
	private String shape;//节点的形状，只用了4种，单圆开始，双圆结束，普通四方，判断菱形	
	private List<Integer> preIds;//接到节点的id
	private Map<Integer, String> edgeLabels;//指向本节点的边的标签
	private int Level;
	
	public DotNode(){
		this.text = "";
		this.shape = "record";	
		this.preIds = new ArrayList<>();;
		this.edgeLabels = new HashMap<>();
		this.setLevel(0);
	}
	
	public int getId() {
		return id;
	}

	public void setId(int id) {
		this.id = id;
	}

	public String getText() {
		return text;
	}

	public void setText(String text) {
		this.text = text;
	}

	public String getShape() {
		return shape;
	}

	public void setShape(String shape) {
		this.shape = shape;
	}

	public List<Integer> getPreIds() {
		return preIds;
	}

	public void setPreIds(List<Integer> preIds) {
		this.preIds = preIds;
	}
	
	public Map<Integer, String> getEdgeLbls(){
		return this.edgeLabels;
	}
	
	public String getEdgeLbl(int key){
		return edgeLabels.get(key) == null ? "" : edgeLabels.get(key);
	}
	public void setEdgeLbl(Integer preId, String label){
		edgeLabels.put(preId, label);
	}

	/**
	 * 在switch语句的case条件中，简单添加switch标志语句作为前导节点
	 * @param preId
	 */
	public void addPreId(int preId){
		boolean exist = false;
		for(int pid : preIds){
			if(preId == pid){
				exist = true;
				break;
			}
		}
		if(!exist){
			preIds.add(preId);
		}
	}
	/**
	 * 添加前导节点，如前导节点为判断节点，则设置边的标记为no
	 * @param list
	 * @param preId
	 */
	public void addPreId(List<DotNode> list, int preId){
		boolean exist = false;
		for(int pid : preIds){
			if(preId == pid){
				exist = true;
				break;
			}
		}
		if(!exist){
			preIds.add(preId);
			DotNode pre = getDotNode(list, preId);
			if(pre != null){
				if(pre.getShape().equals("diamond") && getEdgeLbl(preId).equals("")){
					setEdgeLbl(preId, "no");
				}
			}
		}
	}
	/**
	 * 在结点链表中查找指定id的节点
	 * @param list
	 * @param id
	 * @return
	 */
	public static DotNode getDotNode(List<DotNode> list, int id){
		for(DotNode d : list){
			if(d.getId() == id){
				return d;
			}
		}
		return null;
	}
	/**
	 * 将toAdd合并到dest中，过滤掉重复的节点
	 * @param dest
	 * @param toAdd
	 */
	public static void listAdd(List<DotNode> dest, List<DotNode> toAdd){
		if(toAdd == null){
			return;
		}
		if(dest == null){
			dest = new ArrayList<>();
		}
		for(DotNode addNode : toAdd){
			boolean exist = false;
			for(DotNode node : dest){
				if(addNode.getId() == node.getId()){
					exist = true;
					break;
				}
			}
			if(!exist){
				dest.add(addNode);
			}
		}
		
	}
	
	public static void listAdd(List<DotNode> destList, DotNode node){
		if(node == null){
			return;
		}
		if(destList == null){
			destList = new ArrayList<>();
		}
		boolean exist = false;
		for(DotNode d1 : destList){
			if(node.getId() == d1.getId()){
				exist = true;
				break;
			}
		}
		if(!exist){
			destList.add(node);
		}
	}

	public int getLevel() {
		return Level;
	}

	public void setLevel(int level) {
		Level = level;
	}
	
}