totalpages.java

来自「Java生成PDF Java生成PDF Java生成PDF」· Java 代码 · 共 41 行

// $Id: TotalPages.java,v 1.8 2007/09/12 09:54:31 mike Exp $

package org.faceless.pdf2.viewer2.feature;

import org.faceless.pdf2.viewer2.*;
import org.faceless.pdf2.*;
import javax.swing.*;
import java.awt.event.*;

/**
 * Creates a {@link JLabel} which displays the total number of pages on the Toolbar.
 * The name of this feature is "TotalPages".
 * <p><i>This code is copyright the Big Faceless Organization. You're welcome to use, modify and distribute it in any form in your own projects, provided those projects continue to make use of the Big Faceless PDF library.</i></p>
 * @since 2.8
 */
public class TotalPages extends ViewerWidget implements DocumentPanelListener
{
    private JLabel totalpages;

    public TotalPages() {
        super("TotalPages");
        totalpages = new JLabel();
        totalpages.setHorizontalAlignment(JTextField.LEFT);
        totalpages.setText("/  ");
        setComponent("Navigation", totalpages);
    }

    public void initialize(PDFViewer viewer) {
        super.initialize(viewer);
        viewer.addDocumentPanelListener(this);
    }

    public void documentUpdated(DocumentPanelEvent event) {
        if (event.getType()=="deactivated") {
            totalpages.setText("/ ");
        } else if (event.getType()=="activated") {
            totalpages.setText("/ "+event.getDocumentPanel().getPDF().getNumberOfPages());
        }
    }
}