me.uni.emuseo.view.exhibits.ExhibitImageEditWindow.java Source code

Introduction

Here is the source code for me.uni.emuseo.view.exhibits.ExhibitImageEditWindow.java

Source

/*******************************************************************************
 * Copyright (c) 2016 Darian Jakubik.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser Public License v2.1
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * 
 * Contributors:
 *     Darian Jakubik - initial API and implementation
 ******************************************************************************/
package me.uni.emuseo.view.exhibits;

import org.vaadin.easyuploads.ImagePreviewField;

import com.vaadin.server.FontAwesome;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Button.ClickListener;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.VerticalLayout;
import com.vaadin.ui.Window;

import me.uni.emuseo.model.exhibits.ExhibitDTO;
import me.uni.emuseo.model.resources.ResourceAddEditDTO;
import me.uni.emuseo.view.common.form.InvalidBeanException;

public abstract class ExhibitImageEditWindow extends Window {
    /**
     * 
     */
    private static final long serialVersionUID = 4023778432405550695L;

    protected ExhibitDTO bean;
    protected Button saveButton;
    protected Button cancelButton;
    protected VerticalLayout windowLayout;
    protected HorizontalLayout buttonLayout;
    protected ExhibitionImagePreviewField imagePreviewField;

    public ExhibitImageEditWindow(ExhibitDTO bean) {
        this.bean = bean;
        setSizeUndefined();
        setWidth(400, Unit.PIXELS);
        setHeight(360, Unit.PIXELS);
        windowLayout = new VerticalLayout();

        buildButtons();

        windowLayout.setMargin(true);
        imagePreviewField = new ExhibitionImagePreviewField();
        imagePreviewField.setCaption("Wybierz zdjcie eksponatu");
        windowLayout.addComponent(imagePreviewField);
        windowLayout.addComponent(buttonLayout);

        setContent(windowLayout);
        setModal(true);
    }

    public ExhibitImageEditWindow(ExhibitDTO bean, String caption) {
        this(bean);
        setCaption(caption);
    }

    private void buildButtons() {
        ClickListener clickListener = new ClickListener() {

            private static final long serialVersionUID = 5320702365033343873L;

            @Override
            public void buttonClick(ClickEvent event) {
                Button button = event.getButton();
                if (button.equals(saveButton)) {
                    onPreSave();
                } else if (button.equals(cancelButton)) {
                    onCancel();
                }
            }
        };
        buttonLayout = new HorizontalLayout();
        saveButton = new Button();
        saveButton.addStyleName("primary");
        saveButton.setIcon(FontAwesome.SAVE);
        saveButton.addClickListener(clickListener);
        cancelButton = new Button();
        cancelButton.addStyleName("primary");
        cancelButton.setIcon(FontAwesome.UNDO);
        cancelButton.addClickListener(clickListener);
        buttonLayout.addComponent(saveButton);
        buttonLayout.addComponent(cancelButton);
        buttonLayout.setSpacing(true);
        buttonLayout.addStyleName("form-buttons");
    }

    @Override
    public void close() {
        onCancel();
    }

    protected void onCancel() {
        super.close();
    }

    protected void onPreSave() {
        byte[] imageData = (byte[]) imagePreviewField.getValue();
        ResourceAddEditDTO resourceDTO = new ResourceAddEditDTO();
        resourceDTO.setFileName(imagePreviewField.getLastFileName());
        resourceDTO.setMimeType(imagePreviewField.getLastMimeType());
        resourceDTO.setFileData(imageData);
        resourceDTO.setFileSize(imagePreviewField.getLastFileSize());
        try {
            if (onSave(bean, resourceDTO)) {
                super.close();
            }
        } catch (InvalidBeanException e) {
            e.printStackTrace();
        }
    }

    protected abstract boolean onSave(ExhibitDTO bean, ResourceAddEditDTO resourceDTO) throws InvalidBeanException;

    public static class ExhibitionImagePreviewField extends ImagePreviewField {

        private static final long serialVersionUID = 8122769686585628384L;

        @Override
        public String getLastMimeType() {
            // TODO Auto-generated method stub
            return super.getLastMimeType();
        }

        @Override
        public long getLastFileSize() {
            if (isEmpty()) {
                return 0;
            }
            return super.getLastFileSize();
        }
    }

}