如何在Gwt中的PopupPanel中添加取消按钮

Question

我是编程新手。

我有垂直面板。在verticalPanel和一些小部件上添加了一个按钮（lblAddFolderIcon）。

点击b1时，应该有一个带有更多小部件的弹出式面板和两个带有添加和取消的按钮。

我的代码：

   lblAddFolderIcon.addClickHandler(new ClickHandler() {
        public void onClick(ClickEvent event) {
            String childFolder = item.getText();
            String[] mainRepository=getPath(item);
            String objectId=item.getTitle();

            final AddFolderPopup addFolderPopup = new AddFolderPopup(childFolder,mainRepository[0],objectId);
            addFolderPopup.setHeight("300px");
            addFolderPopup.setWidth("502px");
            addFolderPopup.setPopupPositionAndShow(new PopupPanel.PositionCallback() {

                public void setPosition(int offsetWidth, int offsetHeight) {
                    // TODO Auto-generated method stub
                    int left = (Window.getClientWidth() - offsetWidth) / 3;
                    int top = (Window.getClientHeight() - offsetHeight) / 3;
                    addFolderPopup.setPopupPosition(left, top);
                }
            });
            //addFolderPopup.show();
            addFolderPopup.addFolderGui();
        }
    });

---

    public class AddFolderPopup extends PopupPanel {
VerticalPanel vpPopupl = new VerticalPanel();
private String childFolder;
private String mainRepository;
private String objectId;

public AddFolderPopup(){
    super(true);
}
public AddFolderPopup(String childFolder, String mainRepository, String objectId) {
    this.childFolder = childFolder;
    this.mainRepository = mainRepository;
    this.objectId = objectId;   

}
public void addFolderGui() {
         // some widget to design Gui and
      Button btnCancel = new Button("Cancel");
    btnCancel.addClickHandler(new ClickHandler() {
        public void onClick(ClickEvent event) {
                               /* i Dont Know what should i write here 
                                  so that this popupwindow is closed
                                */
                }
    });
      }
    }

Plz建议关闭此弹出窗口的一些代码 我的方法是否正确。

Answer 1

试试吧  hide() 在你取消的onclick

Answer 2

在点击处理程序的匿名类中： AddFolderPopup.this.hide（）;