通過單擊其子面板的按鈕關閉彈出的面板

Question

我有以下面板層次結構：

自定義面板1包含PopupPanel包含DecklayoutPanel包含CustomPanel 2包含FlowPanel包含按鈕。

如何通過單擊按鈕關閉自定義面板1或PopupPanel？

Answer 1

// CustomPanel2

class CustomPanel2 { 
    @UiField Button closeButton; 

    public CustomPanel2() { 
    initWidget(uiBinder.createAndBindUi(this)); 
    } 

    public HasClickHandlers closeButton() { 
    return closeButton; 
    } 
} 

// CustomPanel1

class CustomPanel1 implements ClickHandler { 
    @UiField PopupPanel myPopupPanel; 
    @UiField CustomPanel2 customPanel2; 

    public CustomPanel1() { 
    initWidget(uiBinder.createAndBindUi(this)); 
    customPanel2.closeButton().addClickHandler(this); 
    } 

    @Override 
    public void onClick(ClickEvent e) { 
    myPopupPanel.hide(); 
    } 
}