jgrouppanel.java

JGraph扩展应用。自定义Renderer,自定义视图View实现自定义工作流控件

package flow.graph.gui.tools;

import java.util.*;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;


public class JGroupPanel extends JPanel {
    /*用来管理组的三个容器*/
    private JPanel pNorth = new JPanel() {
    };
    private JPanel pCenter = new JPanel();
    private JPanel pSouth = new JPanel();

    /*当前全部组的集合*/
    private ArrayList groupList = new ArrayList();

    /*是否已禁止添加组件*/
    private boolean forbidFlag = false;
	
	private int activeGroupIndex;

    /*当前激活的组*/
    private JGroupContainer activeGroup = null;
    transient ActionListener al = new ActionListener() {
        public void actionPerformed(ActionEvent e) {
			AbstractButton bttTitle = (AbstractButton) e.getSource();
            expandGroup( (JGroupContainer) bttTitle.getParent());
			//System.out.println(bttTitle.getParent());
        }
    };

    private boolean hasCreateDefaultGroup = false;
	
	
	
    public JGroupPanel() {
        initComponents();
        //createDefaultGroup();
    }
    private void initComponents(){
        this.setLayout(new BorderLayout());
        this.add(pNorth, BorderLayout.NORTH);
        this.add(pCenter, BorderLayout.CENTER);
        this.add(pSouth, BorderLayout.SOUTH);
        pNorth.setLayout(new GroupLayout());
        pCenter.setLayout(new BorderLayout());
        pSouth.setLayout(new GroupLayout());
        forbidFlag = true;
    }
    public void createDefaultGroup(){
        //Default Group
		/*
        Color bg[] = {
            Color.black, Color.red, Color.orange, Color.yellow, Color.green,
            Color.cyan, Color.blue, Color.white};
        for (int i = 1; i <= 2; i++) {
	        //for (int i = 1; i <= bg.length; i++) {
            //insertGroup(i - 1, "Group " + i, bg[i - 1]);
            insertGroup(i - 1, "Group " + i);
            Color mc = new Color(255 - bg[i - 1].getRed(),
                                 255 - bg[i - 1].getGreen(),
                                 255 - bg[i - 1].getBlue());
            for (int j = 1; j <= 5; j++) {
                JButton bttMember = new JButton("Member " + j + " of " + i);
                addMember(i - 1, bttMember);
                bttMember.setPreferredSize(new Dimension(1, 40));
                bttMember.setOpaque(false);
                bttMember.setForeground(mc);
            }
            getGroup(i - 1).setMemberGap(20, 5);
            getGroup(i - 1).getTitleButton().setForeground(bg[i - 1]);
        }*/
		
		insertGroup(0, "业务列表");
		JButton sb = new JButton("哈哈");
		sb.setPreferredSize(new Dimension(1, 40));
		addMember(0, sb);
		
		insertGroup(1, "业务模板");
		JButton sb1 = new JButton("哈哈");
		sb1.setPreferredSize(new Dimension(1, 40));
		addMember(1, sb1);
		getGroup(0).setMemberGap(30, 5);
        expandGroup(0);
        hasCreateDefaultGroup = true;
    }

	public JGroupContainer getActiveGroup(){
		return activeGroup;
	}
	
    /**
     * @param groupNames String[] 预设组名
     */
    public JGroupPanel(String groupNames[]) {
        initComponents();
        addGroup(groupNames);
    }

    /**
     * 展开组
     * @param name String 组名
     */
    public void expandGroup(String name) {
        for (int i = getGroupCount() - 1; i >= 0; i--) {
            if (getGroupName(i).equals(name)) {
                expandGroup(i);
            }
        }
    }

    public void expandGroup() {
		/*
        pNorth.removeAll();
        pCenter.removeAll();
        pSouth.removeAll();
        pNorth.doLayout();
        pCenter.doLayout();
        pSouth.doLayout();
        doLayout();
        */
		//if(getGroupCount() > 0)
		//	expandGroup(0);
		this.updateUI();
    }

    /**
     * 展开组
     * @param index int 组的顺序号
     */
    public void expandGroup(int index) {
        expandGroup(getGroup(index));
    }

    /**
     * 展开组
     * @param group JGroupContainer 组
     */
    protected void expandGroup(JGroupContainer group) {
        pNorth.removeAll();
        pCenter.removeAll();
        pSouth.removeAll();
        boolean hasAddCenter = false;
        for (int i = 0; i < groupList.size(); i++) {
            Component c = (Component) groupList.get(i);
            if (hasAddCenter) {
                pSouth.add(c);
            }
            else if (c == group) {
                pCenter.add(c, BorderLayout.CENTER);
                hasAddCenter = true;
            }
            else {
                pNorth.add(c);
            }
			if(group.equals(groupList.get(i)))
				activeGroupIndex = i;
        }
        if (activeGroup != null) {
            activeGroup.collapse();
        }
        activeGroup = group;
        activeGroup.expand();
        pNorth.doLayout();
        pCenter.doLayout();
        pSouth.doLayout();
        doLayout();
    }
	
	public int getActiveGroupIndex(){
		return activeGroupIndex;
	}

    /**
     * 收缩组
     * @param name String 组名
     */
    public void collapseGroup(String name) {
        for (int i = getGroupCount() - 1; i >= 0; i--) {
            if (getGroupName(i).equals(name)) {
                collapseGroup(i);
            }
        }
    }

    /**
     * 收缩组
     * @param index int 组的顺序号
     */
    public void collapseGroup(int index) {
        collapseGroup(getGroup(index));
    }

    /**
     * 收缩组
     * @param group JGroupContainer 组
     */
    protected void collapseGroup(JGroupContainer group) {
        if (group == activeGroup) {
            activeGroup.collapse();
            activeGroup = null;
        }
    }

    /**
     * 添加组
     * @param name String 组名
     */
    public void addGroup(String name) {
        this.insertGroup(getGroupCount(), name);
    }

    /**
     * 添加多个组
     * @param names String[] 组名
     */
    public void addGroup(String names[]) {
        for (int i = 0; i < names.length; i++) {
            addGroup(names[i]);
        }
    }

    /**
     * 插入一个组
     * @param index int 顺序号
     * @param name String 组名
     * @param bg Color 背景色
     */
	
    public void insertGroup(int index, String name, Color bg) {
        if (index < 0 || index > groupList.size()) {
            throw new ArrayIndexOutOfBoundsException("index:" + index +
                " >count:" + groupList.size());
        }
        if(hasCreateDefaultGroup){
            while(getGroupCount()>0){
                removeGroup(0);
            }
            hasCreateDefaultGroup = false;
        }
        int countNorth = pNorth.getComponentCount();
        int countCenter = pCenter.getComponentCount();
        int countSouth = pSouth.getComponentCount();
        JGroupContainer group;
        if (index <= countNorth) {
            group = insertGroup(pNorth, index, name, bg);
        }
        else if (index <= countNorth + countCenter) {
            group = insertGroup(pCenter, index - countNorth, name, bg);
        }
        else if (index <= countNorth + countCenter + countSouth) {
            group = insertGroup(pSouth, index - countNorth - countCenter, name,
                                bg);
        }
        else {
            group = insertGroup(pSouth, countSouth, name, bg);
        }
        group.getTitleButton().addActionListener(al);
        groupList.add(index, group);

    }

    /**
     * 插入一个组
     * @param index int 顺序号
     * @param name String 组名
     */
    public void insertGroup(int index, String name) {
        //insertGroup(index, name, UIManager.getColor("Desktop.background"));
        insertGroup(index, name, Color.LIGHT_GRAY);