import com.vaadin.server.Page.BrowserWindowResizeEvent; //导入依赖的package包/类
@Override
protected void init(final VaadinRequest request) {
    setLocale(Locale.US);

    DashboardEventBus.register(this);
    Responsive.makeResponsive(this);
    addStyleName(ValoTheme.UI_WITH_MENU);

    updateContent();

    // Some views need to be aware of browser resize events so a
    // BrowserResizeEvent gets fired to the event bus on every occasion.
    Page.getCurrent().addBrowserWindowResizeListener(
            new BrowserWindowResizeListener() {
                @Override
                public void browserWindowResized(
                        final BrowserWindowResizeEvent event) {
                    DashboardEventBus.post(new BrowserResizeEvent());
                }
            });
}
 

import com.vaadin.server.Page.BrowserWindowResizeEvent; //导入依赖的package包/类
@Override
public void browserWindowResized(final BrowserWindowResizeEvent event) {
    showOrHideFilterButtons(event.getWidth());
}
 

import com.vaadin.server.Page.BrowserWindowResizeEvent; //导入依赖的package包/类
@Override
public void browserWindowResized(final BrowserWindowResizeEvent event) {
    final int browserWidth = event.getWidth();
    showOrHideFilterButtons(browserWidth);
}
 

import com.vaadin.server.Page.BrowserWindowResizeEvent; //导入依赖的package包/类
private void buildMainLayout()
{

	addComponent((Component) component);
	setExpandRatio((Component) component, 1);
	helpPane = new Panel();
	helpPane.setImmediate(false);

	showHelpLoadingSplash();

	helpSliderPanel = new SliderPanelBuilder(helpPane).expanded(false).mode(SliderMode.RIGHT)
			.tabPosition(SliderTabPosition.MIDDLE).style(SliderPanelStyles.COLOR_BLUE).caption("Help")
			.animationDuration(400).tabSize(30).autoCollapseSlider(true)
			.fixedContentSize((int) (UI.getCurrent().getPage().getBrowserWindowWidth() * 0.75)).build();

	helpLoader = new SlideOutLoader();

	innerSecondPanel = new VerticalLayout();
	innerSecondPanel.setSizeFull();
	innerSecondPanel.setWidth("30");
	innerSecondPanel.addComponent(helpSliderPanel);
	innerSecondPanel.setComponentAlignment(helpSliderPanel, Alignment.MIDDLE_RIGHT);

	addComponent(innerSecondPanel);

	Page.getCurrent().addBrowserWindowResizeListener(new BrowserWindowResizeListener()
	{

		private static final long serialVersionUID = -8548907013566961812L;

		@Override
		public void browserWindowResized(BrowserWindowResizeEvent event)
		{

			helpSliderPanel.setFixedContentSize((int) (event.getWidth() * 0.75));
			if (helpSliderPanel.isExpanded())
			{
				helpSliderPanel.collapse();
			}

		}

	});

}