在Jface Treeviewer中实现搜索功能

Text searchText = new Text(parent, SWT.SEARCH | SWT.CANCEL);
searchText.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL));
searchText.addModifyListener(new ModifyListener() {
    public void modifyText(ModifyEvent e) {
        // 获取搜索关键字
        String keyword = searchText.getText();
        // 设置过滤器的关键字
        viewer.setFilters(new ViewerFilter[] { new TreeViewerFilter(keyword) });
        // 刷新树节点显示
        viewer.refresh();
    }
});

Button searchButton = new Button(parent, SWT.PUSH);
searchButton.setText("搜索");
searchButton.addSelectionListener(new SelectionAdapter() {
    public void widgetSelected(SelectionEvent e) {
        // 获取搜索关键字
        String keyword = searchText.getText();
        // 设置过滤器的关键字
        viewer.setFilters(new ViewerFilter[] { new TreeViewerFilter(keyword) });
        // 刷新树节点显示
        viewer.refresh();
    }
});

class TreeViewerFilter extends ViewerFilter {
    private String keyword;

    public TreeViewerFilter(String keyword) {
        this.keyword = keyword;
    }

    public boolean select(Viewer viewer, Object parentElement, Object element) {
        if (keyword == null || keyword.isEmpty()) {
            return true;
        }
        // 根据关键字过滤树节点
        // 这里可以根据实际情况进行匹配逻辑的实现
        // 返回true表示显示该节点，返回false表示隐藏该节点
        return element.toString().contains(keyword);
    }
}