Example usage for com.vaadin.ui Button setIcon

Introduction

In this page you can find the example usage for com.vaadin.ui Button setIcon.

Prototype

public void setIcon(Resource icon, String iconAltText) 

Source Link

Document

Sets the component's icon and alt text.

Usage

From source file:eu.maxschuster.vaadin.buttonlink.demo.DemoUI.java

License:Apache License

@Override
protected void init(VaadinRequest request) {

    final VerticalLayout wrapper = new VerticalLayout();
    wrapper.setSizeFull();//from  w  w w  .ja v a  2s  .co m
    setContent(wrapper);

    // Show it in the middle of the screen
    final VerticalLayout layout = new VerticalLayout();
    layout.setSpacing(true);
    layout.setSizeUndefined();
    wrapper.addComponent(layout);
    wrapper.setComponentAlignment(layout, Alignment.MIDDLE_CENTER);

    final Label themeName = new Label();
    themeName.setCaption("Current Theme:");
    themeName.addStyleName("h1");
    layout.addComponent(themeName);

    Label waring = new Label("<strong>Attention:</strong><br />\nChanging the theme may take a few seconds!");
    waring.setContentMode(ContentMode.HTML);
    layout.addComponent(waring);

    getPage().addUriFragmentChangedListener(new UriFragmentChangedListener() {

        @Override
        public void uriFragmentChanged(UriFragmentChangedEvent event) {
            String fragment = event.getUriFragment().replace("!", "");
            if (fragment.isEmpty()) {
                fragment = defaultTheme;
            }
            loadTheme(fragment);
        }
    });

    themeSelect.setSizeFull();
    themeSelect.setNullSelectionAllowed(false);
    themeSelect.addValueChangeListener(new ValueChangeListener() {

        @Override
        public void valueChange(ValueChangeEvent event) {
            String fragment = "!" + themeSelect.getValue();
            getPage().setUriFragment(fragment);
        }
    });
    layout.addComponent(themeSelect);
    layout.setComponentAlignment(themeSelect, Alignment.BOTTOM_CENTER);

    final CheckBox useIcon = new CheckBox("Use icons");
    useIcon.setValue(false);
    layout.addComponent(useIcon);

    final HorizontalLayout comparsionLayout = new HorizontalLayout();
    comparsionLayout.setSpacing(true);
    layout.addComponent(comparsionLayout);
    layout.setComponentAlignment(comparsionLayout, Alignment.TOP_CENTER);

    final Button button = new Button("This is a \"normal\" Button", new Button.ClickListener() {

        @Override
        public void buttonClick(ClickEvent event) {
            Notification.show("Hello World!");
        }
    });
    comparsionLayout.addComponent(button);
    comparsionLayout.setComponentAlignment(button, Alignment.MIDDLE_RIGHT);

    // Initialize our new UI component
    final ButtonLink buttonLink = new ButtonLink("This is a ButtonLink",
            new ExternalResource("https://vaadin.com"));
    buttonLink.setTargetName("_blank");
    buttonLink.setDescription("Visit vaadin.com in a new tab or window.");
    buttonLink.addStyleName("test-stylename");
    comparsionLayout.addComponent(buttonLink);
    comparsionLayout.setComponentAlignment(buttonLink, Alignment.MIDDLE_LEFT);

    themeName.setPropertyDataSource(themeSelect);

    useIcon.addValueChangeListener(new ValueChangeListener() {

        @Override
        public void valueChange(ValueChangeEvent event) {
            boolean b = (Boolean) event.getProperty().getValue();
            if (b) {
                button.setIcon(vaadinIcon, "Vaadin Logo");
                buttonLink.setIcon(vaadinIcon, "Vaadin Logo");
            } else {
                button.setIcon(null);
                buttonLink.setIcon(null);
            }
        }
    });

    String fragment = getPage().getUriFragment();

    loadTheme(
            fragment == null || fragment.replace("!", "").isEmpty() ? defaultTheme : fragment.replace("!", ""));
}

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