Java 如何为GWT装饰的Popuppanel应用不同的背景色？

您可以通过使用CSS创建自己的自定义样式来实现它

默认情况下，

decoratedpoppanel

使用clean.css中定义的

gwt decoratedpoppanel

样式

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创建您自己的样式，只需更新“背景色”属性并对其应用样式，如下所示：

CSS:

爪哇：

final DecoratedPopupPanel infoPopup = new DecoratedPopupPanel(true);
    infoPopup.setWidget(new Label("Table below displays the total number of users for each application for the selected time range."));
    infoPopup.setWidth("150px");

    inImage.addMouseOverHandler(new MouseOverHandler(){
        public void onMouseOver(MouseOverEvent arg0){
            int left = inImage.getAbsoluteLeft() + 10;
            int top = inImage.getAbsoluteTop() + 10;
           infoPopup.setPopupPosition(left, top);

            // Show the popup
            infoPopup.show();
        }

    });

    inImage.addMouseOutHandler(new MouseOutHandler(){
        public void onMouseOut(MouseOutEvent arg0){
           //hide
            infoPopup.hide();

        }
    });

.gwt-DecoratedPopupPanel .popupMiddleCenter {
    padding: 3px;
    background: #f1f1f1;
}

.myPopupPanelStyle {
  background: #0000FF;
}

infoPopup.setStyleName("myPopupPanelStyle");