com.mcparland.john.vaadin_mvn_arch.samples.ErrorView.java Source code

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Here is the source code for com.mcparland.john.vaadin_mvn_arch.samples.ErrorView.java

Source

package com.mcparland.john.vaadin_mvn_arch.samples;

/*
 * #%L
 * vaadin_mvn_arch-ui
 * %%
 * Copyright (C) 2014 John McParland
 * %%
 * 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.
 * #L%
 */

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.Reindeer;

/**
 * View shown when trying to navigate to a view that does not exist using
 * {@link com.vaadin.navigator.Navigator}.
 * 
 * 
 */
public class ErrorView extends VerticalLayout implements View {

    /**
     * The serialVersionUID.
     */
    private static final long serialVersionUID = 1L;
    private Label explanation;

    public ErrorView() {
        setMargin(true);
        setSpacing(true);

        Label header = new Label("The view could not be found");
        header.addStyleName(Reindeer.LABEL_H1);
        addComponent(header);
        addComponent(explanation = new Label());
    }

    @Override
    public void enter(ViewChangeListener.ViewChangeEvent event) {
        explanation.setValue(
                String.format("You tried to navigate to a view ('%s') that does not exist.", event.getViewName()));
    }
}