visiodemo.java

java 与COM组件的连接桥

package com.jacob.samples.visio;
import javax.swing.*;
import javax.swing.filechooser.FileFilter;

import com.jacob.com.ComThread;

import java.io.*;
import java.awt.*;
import java.awt.event.*;

/**
 * Created as part of sourceforge 1386454 to demonstrate returning values in event handlers
 * @author [e-mail]
 * <p>
 * This file contains the main() that runs the demo
 * <p>
 * Look in the docs area at the Jacob usage document for command line options.
 */
public class VisioDemo extends JFrame implements ActionListener, WindowListener {

    /**
	 * Totally dummy value to make Eclipse quit complaining
	 */
	private static final long serialVersionUID = 1L;
	
	JButton chooseButton;
    JButton openButton;
    JPanel buttons;

    ImageIcon theImage;
    JLabel theLabel; // the icon on the page is actually this button's icon

    File selectedFile;
    /** everyone should get this through getVisio() */
    private VisioAppFacade visioProxy = null;

    // put this up here so it remembers where we were on the last choose
    JFileChooser chooser = null;
    

    public class VisioFileFilter extends FileFilter {
        public boolean accept(File f) {
        	if (f.isDirectory()){
        		return true;
        	} else {
        		return (f.getName().toUpperCase().endsWith(".VSD"));
        	}
        }

        public String getDescription() {
            return "Visio Drawings";
        }
    }

    public VisioDemo()  {
        super("Visio in Swing POC");
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        buttons = new JPanel();
        getContentPane().setLayout(new BorderLayout());
        chooseButton = new JButton("Choose file to display");
        openButton = new JButton("Open file chosen file in Visio");
        chooseButton.addActionListener(this);
        openButton.addActionListener(this);
        buttons.add(chooseButton);
        buttons.add(openButton);
        getContentPane().add(buttons, BorderLayout.SOUTH);
        theLabel = new JLabel("");
        getContentPane().add(theLabel, BorderLayout.CENTER);
        addWindowListener(this);
        setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
        setSize(640,480);
        this.setVisible(true);
    }

    public static void main(String args[]) throws Exception {
    	SwingUtilities.invokeLater(new Runnable(){
    		public void run(){
			    ComThread.InitSTA();
		        VisioDemo poc = new VisioDemo();
		        ComThread.Release();
		        if (poc == null){
		        	System.out.println("poc== null? That should never happen!");
		        }
    		}
    	});
    }

    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == chooseButton) {
            pickFile();
        } else if (e.getSource() == openButton) {
            try {
                openFile();
            } catch (Exception ex) {
                ex.printStackTrace();
                throw new RuntimeException(ex);
            }
        } else {
            System.out.println("Awesome!");
        }
    }

    private void pickFile() {
        try {
        	chooser = new JFileChooser();
        	// comment this out if you want it to always go to myDocuments
        	chooser.setCurrentDirectory(new File(System.getProperty("user.dir")));
            chooser.setFileFilter(new VisioFileFilter());
            int returnVal = chooser.showOpenDialog(this);
            if(returnVal == JFileChooser.APPROVE_OPTION) {
                selectedFile = chooser.getSelectedFile();
               	showSelectedFilePreview();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * use this private method instead of initializing on boot up so that instance
     * and all listeners are created in this thread (event thread) rather than root thread
     * @return
     */
    private VisioAppFacade getVisio(){
    	if (visioProxy == null){
    		try {
            visioProxy = VisioAppFacade.getInstance();
        	} catch (VisioException ve){
        		System.out.println("ailed to openFile()");
        		ve.printStackTrace();
        	}            
    	}
    	return visioProxy;
    }
    private void showSelectedFilePreview() throws VisioException {
        if (selectedFile != null) {
            byte[] image = getVisio().createPreview(selectedFile);
            theImage = new ImageIcon(image);
            theLabel.setIcon(theImage);
        }
    }

    private void openFile() throws VisioException {
    	try {
        getVisio().editDiagram(selectedFile);
        showSelectedFilePreview();
    	} catch (VisioException ve){
    		System.out.println("ailed to openFile()");
    		ve.printStackTrace();
    	}

    }

    public void windowActivated(WindowEvent e) {
    }

    public void windowClosed(WindowEvent e) {
        System.out.println("WINDOW CLOSED");
        if (visioProxy != null){
        	visioProxy.quit();
        }
    }
    public void windowClosing(WindowEvent e){
    }

    public void windowDeactivated(WindowEvent e){
    }

    public void windowDeiconified(WindowEvent e){
    }

    public void windowIconified(WindowEvent e){
        System.out.println("Fooboo");
    }
    public void windowOpened(WindowEvent e){
    }
}