source: main/trunk/gli/src/org/greenstone/gatherer/download/ServerInfoDialog.java@ 31877

package org.greenstone.gatherer.download;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import java.io.*;
import java.util.ArrayList;
import org.greenstone.gatherer.cdm.Argument;
import org.greenstone.gatherer.Configuration;
import org.greenstone.gatherer.DebugStream;
import org.greenstone.gatherer.Dictionary;
import org.greenstone.gatherer.Gatherer;
import org.greenstone.gatherer.greenstone.LocalGreenstone;
import org.greenstone.gatherer.gui.*;
import org.greenstone.gatherer.util.SafeProcess;
import org.greenstone.gatherer.util.Utility;

public class ServerInfoDialog extends JDialog
{    
    static private Dimension SIZE = new Dimension(500, 300);
    private String url;
    private String mode;
    private JPanel info_list_pane;
    private JScrollPane info_scroll_pane;
    private JDialog info_dialog;
    private Download download;
    private String proxy_url;
    
    public ServerInfoDialog(String url, String proxy_url, String mode, Download download) {
    super();
    this.url = url;
    this.mode = mode;
        this.download = download;
        this.proxy_url = proxy_url;
    this.info_dialog = this;
    
    this.setSize(SIZE);

    JButton close_button = new GLIButton(Dictionary.get("General.Close"),Dictionary.get("General.Close_Tooltip"));
    close_button.setEnabled(true); 
    close_button.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent event) {
            info_dialog.dispose();
        }
        });
    
    JPanel button_pane = new JPanel();
    button_pane.setLayout(new FlowLayout());
    button_pane.setBorder(BorderFactory.createEtchedBorder());
    button_pane.add(close_button);
    
    info_list_pane = new JPanel();
    info_list_pane.setLayout(new BoxLayout(info_list_pane, BoxLayout.Y_AXIS));
    info_list_pane.setBorder(BorderFactory.createEtchedBorder());
    getServerInfo();

    info_scroll_pane = new JScrollPane(info_list_pane);
    
    JPanel information_pane = new JPanel();
    information_pane.setLayout(new BorderLayout());
    information_pane.setBorder(BorderFactory.createEtchedBorder());
    information_pane.add(info_scroll_pane,BorderLayout.CENTER);
    
    JPanel main_pane = new JPanel();
    main_pane.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
    main_pane.setLayout(new BorderLayout());
    main_pane.add(information_pane,BorderLayout.CENTER);
    main_pane.add(button_pane,BorderLayout.SOUTH);

    Container main_container = this.getContentPane();
    main_container.add(main_pane);
    
    // Show
    Dimension screen_size = Configuration.screen_size;
    setLocation((screen_size.width - SIZE.width) / 2, (screen_size.height - SIZE.height) / 2);
    setVisible(true);

    }

    private void getServerInfo()
    {
    ArrayList commands = new ArrayList();
    commands.add(Configuration.perl_path);
    commands.add("-S");
    commands.add(LocalGreenstone.getBinScriptDirectoryPath()+"downloadfrom.pl");
    commands.add("-info");
    commands.add("-download_mode");
    commands.add(mode);
    
        ArrayList all_arg = download.getArguments(true,false);
    for (int i = 0; i < all_arg.size(); i++) {
        Argument argument = (Argument) all_arg.get(i);
        
        if(argument.isAssigned()) {
        commands.add("-" + argument.getName());
        if(argument.getType() != Argument.FLAG) {
            commands.add(argument.getValue());
        }
        }   
    }
    
    String[] command = (String[]) commands.toArray(new String[0]);
    DebugStream.println("Getting server info: "+commands);
    try {       
        SafeProcess prcs = null;
        
        if (proxy_url != null && !proxy_url.equals("")) {
            // Specify proxies as environment variables
            // Need to manually specify GSDLHOME and GSDLOS also
            
            proxy_url = proxy_url.replaceAll("http://","");
            
            String [] env = new String[7];
            
            env[0] = "http_proxy=http://"+proxy_url;
            env[1] = "https_proxy=http://"+proxy_url; // yes, HTTP protocol for https:// too
                           // see also https://wiki.archlinux.org/index.php/proxy_settings
            env[2] = "ftp_proxy=ftp://"+proxy_url;
            env[3] = "GSDLHOME=" + Configuration.gsdl_path;
            env[4] = "GSDLOS=" + Gatherer.client_operating_system;
            env[5] = "WGETRC=" + LocalGreenstone.getBinOSDirectoryPath(Gatherer.client_operating_system)+"wgetrc"; // teach it where the wgetrc file lives, in gs2build/bin/<os>
            // If PATH is not made available, so that Perl is not on the PATH, then WgetDownload.pm's open3() call
            // to run wget fails with cryptic failure message. So make PATH available for open3():
            env[6] = "PATH="+System.getenv("PATH");
            
            prcs = new SafeProcess(command, env, null);
        } 
        else {
            // Will inherit the GLI's environment, with GSDLHOME and GSDLOS set
            prcs = new SafeProcess(command);
        }
        
        // special processing of Process' stderr stream: 
        // Search the process standard error stream and seach for two particular occurences.
        int exitVal = prcs.runProcess(null, new ProcErrStreamLineByLineHandler());
        
    } catch (Exception ioe) {
        ioe.printStackTrace();
    }
    
    }

    private class ProcErrStreamLineByLineHandler extends SafeProcess.LineByLineHandler
    {
    public ProcErrStreamLineByLineHandler() {
        super(SafeProcess.STDERR); // sets this.source
    }

    public void gotLine(String line) {
        // Check the current line from the standard error stream and seach for two particular occurences.
        if (!line.trim().equals("<<Finished>>")) {
          
        JLabel a_label = new JLabel(line);
        a_label.setAlignmentX(Component.LEFT_ALIGNMENT);
        ServerInfoDialog.this.info_list_pane.add(a_label);
        }
    }
    public void gotException(Exception e) {
        e.printStackTrace();
    }
    }
}