Eclipse REST 库使用

很高兴今天成为了CSDN的专家，所以再忙也要抽空写一篇博客。最近公司有个需求要在RCP应用中用树状结构显示层级关系。我找了半天的开源框架，最后发现Eclipse REST最符合现在的需求。REST是专门用来显示图状效果的，废话少说了上效果，上代码。

public class DeviceTreeViewSWT {

    public static void main(String[] args) {
        Display d = new Display();
        Shell shell = new Shell(d);
        Image image1 = Display.getDefault().getSystemImage(SWT.ICON_INFORMATION);
        Image image2 = Display.getDefault().getSystemImage(SWT.ICON_WARNING);
        Image image3 = Display.getDefault().getSystemImage(SWT.ICON_ERROR);
        shell.setLayout(new FillLayout());
        shell.setSize(800, 800);



        Graph g = new Graph(shell, SWT.NONE);
        g.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e) {
                System.out.println(((Graph) e.widget).getSelection());
            }
        });

        g.setConnectionStyle(ZestStyles.CONNECTIONS_DIRECTED);
        GraphNode n1 = new GraphNode(g, SWT.NONE, "Virtual");
        n1.setBackgroundColor(new Color(d,255,0,0));
        GraphNode n2 = new GraphNode(g, SWT.NONE, "Shanghai");
        GraphNode n3 = new GraphNode(g, SWT.NONE, "Beijing");
        GraphNode n4 = new GraphNode(g, SWT.NONE, "AGM001");
        GraphNode n5 = new GraphNode(g, SWT.NONE, "AGM002");
        GraphNode n6 = new GraphNode(g, SWT.NONE, "AGM003");
        GraphNode n7 = new GraphNode(g, SWT.NONE, "AGM004");
        GraphNode n8 = new GraphNode(g, SWT.NONE, "AGM005");
        GraphNode n9 = new GraphNode(g, SWT.NONE, "AGM006");
        GraphNode n10 = new GraphNode(g, SWT.NONE, "AGM007");
        GraphNode n11 = new GraphNode(g, SWT.NONE, "AGM008");
//        class PathFigure extends PolylineConnection {
//            public PathFigure() {
//                setTargetDecoration(new PolylineDecoration());
//                setConnectionRouter(new ManhattanConnectionRouter());
//            }
//        }

        new GraphConnection(g, SWT.NONE, n1, n2);
        new GraphConnection(g, SWT.NONE, n1, n3);
        new GraphConnection(g, SWT.NONE, n2, n4);
        new GraphConnection(g, SWT.NONE, n2, n5);
        new GraphConnection(g, SWT.NONE, n2, n6);
        new GraphConnection(g, SWT.NONE, n3, n7);
        new GraphConnection(g, SWT.NONE, n3, n8);
        new GraphConnection(g, SWT.NONE, n5, n9);
        new GraphConnection(g, SWT.NONE, n5, n10);
        new GraphConnection(g, SWT.NONE, n4, n11);

        //g.setLayoutAlgorithm(new TreeLayoutAlgorithm(LayoutStyles.ENFORCE_BOUNDS), true);
        //g.setLayoutAlgorithm(new HorizontalTreeLayoutAlgorithm(LayoutStyles.ENFORCE_BOUNDS),true);
        g.setLayoutAlgorithm(new RadialLayoutAlgorithm(LayoutStyles.ENFORCE_BOUNDS),true);
        //g.setLayoutAlgorithm(new GridLayoutAlgorithm(LayoutStyles.ENFORCE_BOUNDS), true);

        shell.open();
        while (!shell.isDisposed()) {
            while (!d.readAndDispatch()) {
                d.sleep();
            }
        }
        image1.dispose();
        image2.dispose();
        image3.dispose();

    }
}

改下LayoutAlgorithm可以看到更炫的辐射状图

效果不错吧,用来显示图，树等都非常的方便

如果你用Jface封装的GraphViewer，那MVC使用起来更是方便.