org.pdfsam.ui.info.SummaryTab.java Source code

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Here is the source code for org.pdfsam.ui.info.SummaryTab.java

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/* 
 * This file is part of the PDF Split And Merge source code
 * Created on 12/mag/2014
 * Copyright 2013-2014 by Andrea Vacondio (andrea.vacondio@gmail.com).
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as 
 * published by the Free Software Foundation, either version 3 of the 
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.pdfsam.ui.info;

import static org.sejda.eventstudio.StaticStudio.eventStudio;

import java.io.File;
import java.text.DateFormat;

import javafx.application.Platform;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.beans.value.WeakChangeListener;
import javafx.scene.control.Label;

import javax.annotation.PostConstruct;
import javax.inject.Named;

import org.apache.commons.io.FileUtils;
import org.apache.commons.lang3.time.FastDateFormat;
import org.pdfsam.context.DefaultI18nContext;
import org.pdfsam.pdf.PdfDescriptorLoadingStatus;
import org.pdfsam.pdf.PdfDocumentDescriptor;
import org.pdfsam.ui.event.ShowPdfDescriptorRequest;
import org.sejda.eventstudio.annotation.EventListener;
import org.sejda.model.pdf.PdfMetadataKey;

import com.itextpdf.text.pdf.PdfDate;

/**
 * Tab displaying a summary of the PDF document information.
 * 
 * @author Andrea Vacondio
 *
 */
@Named
class SummaryTab extends BaseInfoTab implements ChangeListener<PdfDescriptorLoadingStatus> {
    private static FastDateFormat FORMATTER = FastDateFormat.getDateTimeInstance(DateFormat.FULL,
            DateFormat.MEDIUM);
    private Label fileLabel = createValueLabel();
    private Label size = createValueLabel();
    private Label version = createValueLabel();
    private Label created = createValueLabel();
    private Label modified = createValueLabel();
    private Label pages = createValueLabel();
    private Label title = createValueLabel();
    private Label author = createValueLabel();
    private Label creator = createValueLabel();
    private Label producer = createValueLabel();
    private Label subject = createValueLabel();
    private PdfDocumentDescriptor current;

    SummaryTab() {
        setText(DefaultI18nContext.getInstance().i18n("Summary"));
    }

    @PostConstruct
    void init() {
        grid().add(createTitleLabel("File"), 0, 0);
        grid().add(fileLabel, 1, 0);
        grid().add(createTitleLabel("Size"), 0, 1);
        grid().add(size, 1, 1);
        grid().add(createTitleLabel("Created"), 0, 2);
        grid().add(created, 1, 2);
        grid().add(createTitleLabel("Modified"), 0, 3);
        grid().add(modified, 1, 3);
        grid().add(createTitleLabel("PDF version"), 0, 4);
        grid().add(version, 1, 4);
        grid().add(createTitleLabel("Pages"), 0, 5);
        grid().add(pages, 1, 5);
        grid().add(createTitleLabel("Title"), 0, 6);
        grid().add(title, 1, 6);
        grid().add(createTitleLabel("Author"), 0, 7);
        grid().add(author, 1, 7);
        grid().add(createTitleLabel("Creator"), 0, 8);
        grid().add(creator, 1, 8);
        grid().add(createTitleLabel("Producer"), 0, 9);
        grid().add(producer, 1, 9);
        grid().add(createTitleLabel("Subject"), 0, 10);
        grid().add(subject, 1, 10);
        eventStudio().addAnnotatedListeners(this);
    }

    @EventListener
    void requestShow(ShowPdfDescriptorRequest event) {
        if (current != event.getDescriptor()) {
            current = event.getDescriptor();
            current.loadedProperty().addListener(new WeakChangeListener<>(this));
        }
        setFileProperties(current.getFile());
        setPdfProperties(current);
    }

    private void setFileProperties(File file) {
        fileLabel.setText(file.getAbsolutePath());
        size.setText(FileUtils.byteCountToDisplaySize(file.length()));
        modified.setText(FORMATTER.format(file.lastModified()));
    }

    private void setPdfProperties(PdfDocumentDescriptor descriptor) {
        version.setText(descriptor.getVersion());
        pages.setText(Integer.toString(descriptor.pagesPropery().get()));
        created.setText(FORMATTER.format(PdfDate.decode(descriptor.getInformation("CreationDate"))));
        title.setText(descriptor.getInformation(PdfMetadataKey.TITLE.getKey()));
        author.setText(descriptor.getInformation(PdfMetadataKey.AUTHOR.getKey()));
        creator.setText(descriptor.getInformation(PdfMetadataKey.CREATOR.getKey()));
        subject.setText(descriptor.getInformation(PdfMetadataKey.SUBJECT.getKey()));
        producer.setText(descriptor.getInformation("Producer"));
    }

    public void changed(ObservableValue<? extends PdfDescriptorLoadingStatus> observable,
            PdfDescriptorLoadingStatus oldValue, PdfDescriptorLoadingStatus newValue) {
        if (newValue == PdfDescriptorLoadingStatus.LOADED) {
            Platform.runLater(() -> {
                setPdfProperties(current);
            });
        }
    }
}