Examples of com.vaadin.ui.Component

com.vaadin.ui.Component
{@code Component} is the top-level interface that is and must be implementedby all Vaadin components. {@code Component} is paired with{@link AbstractComponent}, which provides a default implementation for all the methods defined in this interface.
Components are laid out in the user interface hierarchically. The layout is managed by layout components, or more generally by components that implement the {@link ComponentContainer} interface. Such a container is theparent of the contained components.

The {@link #getParent()} method allows retrieving the parent component of acomponent. While there is a {@link #setParent(Component) setParent()}, you rarely need it as you normally add components with the {@link ComponentContainer#addComponent(Component) addComponent()} method ofthe layout or other {@code ComponentContainer}, which automatically sets the parent.

A component becomes attached to an application (and the {@link #attach()} is called) when it or one of its parents is attached to themain window of the application through its containment hierarchy.
@author IT Mill Ltd. @version 6.7.1 @since 3.0

                }
            }
        };


        filteringInflater.addAttributeFilter(filter);
        Component filteredView = filteringInflater
                .inflate(getXml("attributefilter-test.xml"));
        Component view = inflater.inflate(getXml("attributefilter-test.xml"));


        // check caption
        Button button200px = (Button) Clara.findComponentById(filteredView,
                "button200px");
        assertEquals("filteredValue", button200px.getCaption());

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        assertEquals("{i18n:test}", button200px.getCaption());
    }


    @Test
    public void inflate_singleButton_findByIdWorks() {
        Component view = inflater.inflate(getXml("single-button.xml"));


        // check that the id my-button returns a Button
        assertEquals(com.vaadin.ui.Button.class,
                Clara.findComponentById(view, "myButton").getClass());

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            Map<String, String> attributes)
            throws ComponentInstantiationException {
        try {
            Class<? extends Component> componentClass = resolveComponentClass(
                    namespace, name);
            Component newComponent = componentClass.newInstance();
            handleAttributes(newComponent, attributes);
            return newComponent;
        } catch (Exception e) {
            throw createException(e, namespace, name);
        }

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    }


    private void bindEventHandler(ComponentMapper mapper, Object controller,
            Method method, EventHandler eventListener) {
        String componentId = eventListener.value();
        Component component = mapper.findById(componentId);


        Class<?> eventClass = (method.getParameterTypes().length > 0 ? method
                .getParameterTypes()[0] : null);
        if (eventClass != null && component != null) {
            Method addListenerMethod = findAddListenerMethod(
                    component.getClass(), eventClass);
            if (addListenerMethod != null) {
                try {
                    Object listener = createListenerProxy(
                            addListenerMethod.getParameterTypes()[0],
                            eventClass, method, controller);

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    }


    private void bindDataSource(ComponentMapper mapper, Object controller,
            Method method, DataSource dataSource) {
        String componentId = dataSource.value();
        Component component = mapper.findById(componentId);
        Class<?> dataSourceClass = method.getReturnType();


        try {
            // Vaadin data model consists of Property/Item/Container
            // objects and each of them have a Viewer interface.

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            if (uri.startsWith("urn:" + URN_NAMESPACE_ID + ":")) {
                // Throw an exception if the id is already used.
                verifyUniqueId(attributes);


                Component component = instantiateComponent(uri, localName,
                        attributes.getValue(ID_ATTRIBUTE));


                if (root == null) {
                    // This was the first Component created -> root.
                    root = component;

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                componentStack.push(component);
            }
        }


        private void attachComponent(Component component) {
            Component topComponent = componentStack.isEmpty() ? null
                    : componentStack.peek();
            if (topComponent instanceof SingleComponentContainer) {
                ((SingleComponentContainer) topComponent).setContent(component);
            } else if (currentContainer != null) {
                currentContainer.addComponent(component);

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        @Override
        public void endElement(String uri, String localName, String qName)
                throws SAXException {
            super.endElement(uri, localName, qName);
            Component component = componentStack.pop();
            if (component instanceof ComponentContainer) {
                Component parent = component.getParent();
                while (parent != null
                        && !(parent instanceof ComponentContainer)) {
                    parent = parent.getParent();
                }
                currentContainer = (ComponentContainer) parent;
            }
        }

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    public Component createComponent(String namespace, String name)
            throws ComponentInstantiationException {
        try {
            Class<? extends Component> componentClass = resolveComponentClass(
                    namespace, name);
            Component newComponent = componentClass.newInstance();
            return newComponent;
        } catch (Exception e) {
            throw createException(e, namespace, name);
        }
    }

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        secondFilter = getSecondFilter();
    }


    @Test
    public void testCreateMethod_usingAllParametersWithTwoFilters_filtersAndControllerCalled() {
        Component layout = Clara.create(xml, controller, firstFilter,
                secondFilter);


        // check caption
        Button button200px = (Button) Clara.findComponentById(layout,
                "button200px");

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