com.gmail.volodymyrdotsenko.cms.fe.vaadin.views.ErrorView.java Source code

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Here is the source code for com.gmail.volodymyrdotsenko.cms.fe.vaadin.views.ErrorView.java

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/*
 * Copyright 2015 The original authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.gmail.volodymyrdotsenko.cms.fe.vaadin.views;

import com.vaadin.navigator.View;
import com.vaadin.navigator.ViewChangeListener;
import com.vaadin.ui.Label;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.themes.ValoTheme;

/**
 * View that is shown when the user tries to navigate to a view that does not exist. Please not
 * this view is not Spring-managed; the Navigator will take care of instantiating it when needed.
 *
 * @author Petter Holmstrm (petter@vaadin.com)
 */
public class ErrorView extends VerticalLayout implements View {

    private Label message;

    public ErrorView() {
        setMargin(true);
        addComponent(message = new Label());
        message.setSizeUndefined();
        message.addStyleName(ValoTheme.LABEL_FAILURE);
    }

    @Override
    public void enter(ViewChangeListener.ViewChangeEvent event) {
        message.setValue(String.format("No such view: %s", event.getViewName()));
    }
}