滚动 TreeViewer 树 SWT

本文介绍了滚动 TreeViewer 树 SWT的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我的对话框有两个 TreeViewer 组件.垂直滚动条必须同步.我尝试过 setSelection 和 setTopItem 方法，但都对其他树没有影响.

My dialog have two TreeViewer components. The vertical scroll bars have to be synchronized. I have tried with setSelection and setTopItem methods but both have no effect to other tree.

xViewerLeft = createXViewer(leftComposite, this);
xViewerRight = createXViewer(rightComposite, this);

xViewerLeft.getTree().getVerticalBar().addListener(SWT.Selection, new Listener() {
    @Override public void handleEvent(Event arg0) {
    //xViewerRight.getTree().setSelection(xViewerLeft.getTree().getSelection());
    //xViewerRight.getTree().setTopItem(xViewerLeft.getTree().getTopItem());
    }
});

有什么想法吗?

推荐答案

解决方案:

vBar1.addListener(SWT.Selection, new Listener() {
        @Override public void handleEvent(Event arg0) {
        double y = vBar1.getSelection()*xViewerRight.getTree().view.bounds().height/100;
        NSPoint nsPoint = new NSPoint();
        nsPoint.x = 0;
        nsPoint.y = y;
        xViewerRight.getTree().view.scrollPoint(nsPoint);
        }
    });

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