ProgressBarPanel.java

package se.cambio.openehr.view.panels;

import org.apache.log4j.Logger;
import se.cambio.openehr.util.OpenEHRImageUtil;
import se.cambio.openehr.util.OpenEHRLanguageManager;
import se.cambio.openehr.util.ProgressManager;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.concurrent.Future;

/**
 * User: Iago.Corbal
 * Date: 2013-10-31
 * Time: 17:51
 */
public class ProgressBarPanel extends JPanel implements ProgressManager {

    private JProgressBar jProgressBar = null;
    private Future<?> _currentThread = null;
    private boolean _isProgresoActivo = false;
    private int _progressValue = 0;
    private String _description = null;
    private JButton cancelButton;
    private JLabel descriptionLabel = null;
    private JPanel mainPanel;

    public ProgressBarPanel(){
        _description = "";
        getDescriptionLabel().setText(_description);
        this.setLayout(new BorderLayout());
        this.add(getMainPanel());
    }

    private JPanel getMainPanel() {
        if (mainPanel == null) {
            GridBagConstraints gridBagConstraints1 = new GridBagConstraints();
            mainPanel = new JPanel();
            mainPanel.setLayout(new GridBagLayout());
            mainPanel.setBackground(Color.WHITE);
            mainPanel.setBorder(javax.swing.BorderFactory.createEtchedBorder(javax.swing.border.EtchedBorder.LOWERED));
            gridBagConstraints1.gridx = 0;
            gridBagConstraints1.gridy = 0;
            gridBagConstraints1.weightx=1;
            gridBagConstraints1.weighty=1;
            gridBagConstraints1.insets = new java.awt.Insets(0,5,0,0);
            gridBagConstraints1.fill = java.awt.GridBagConstraints.HORIZONTAL;
            gridBagConstraints1.anchor = java.awt.GridBagConstraints.WEST;
            gridBagConstraints1.insets = new java.awt.Insets(5,10,0,10);
            mainPanel.add(getDescriptionLabel(), gridBagConstraints1);
            gridBagConstraints1.gridy++;
            mainPanel.add(getJProgressBar(), gridBagConstraints1);
            gridBagConstraints1.gridy++;
            gridBagConstraints1.fill = java.awt.GridBagConstraints.NONE;
            gridBagConstraints1.anchor = java.awt.GridBagConstraints.CENTER;
            mainPanel.add(getCancelButton(), gridBagConstraints1);
        }
        return mainPanel;
    }


    public void changeLoadingText(String description){
        _description = description;
        getDescriptionLabel().setText(_description);
        this.repaint();
        this.validate();
    }

    public void start(){
        _isProgresoActivo = true;
        _progressValue = 1;
        new Thread(new ProgresoActivo()).start();
        this.getJProgressBar().setVisible(true);
    }

    public void stop(){
        _isProgresoActivo = false;
        _progressValue = 0;
        _description = "";
        _currentThread = null;
        getCancelButton().setVisible(false);
        getDescriptionLabel().setText("");
        getJProgressBar().setVisible(false);
        stateUpdated();
    }

    public void setCurrentProgress(String msg, double progress){
        _isProgresoActivo = false;
        _progressValue = (int)(100*progress);
        _description = msg;
        stateUpdated();
    }


    public void stateUpdated() {
        if (_description!=null && !_description.isEmpty()){
            getJProgressBar().setVisible(true);
            getCancelButton().setVisible(true);
        }
        getDescriptionLabel().setText(_description);
        if (_progressValue>=0){
            getJProgressBar().setValue(_progressValue);
        }
    }

    public void setCurrentThread(Future<?> currentThread){
        _currentThread = currentThread;
        getCancelButton().setVisible(true);
    }

    public Future<?> getCurrentThread(){
        return _currentThread;
    }

    public JButton getCancelButton(){
        if (cancelButton==null){
            cancelButton = new JButton(OpenEHRLanguageManager.getMessage("Cancel"));
            cancelButton.setIcon(OpenEHRImageUtil.STOP_ICON);
            cancelButton.setBackground(null);
            cancelButton.setBorder(BorderFactory.createEmptyBorder());
            cancelButton.setVisible(false);
            cancelButton.setFocusable(false);
            cancelButton.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    if(_currentThread!=null){
                    _currentThread.cancel(true);
                    }else{
                        Logger.getLogger(ProgressBarPanel.class).warn("Stopping progress, but currentThread is not set!");
                    }
                    stop();
                }
            });
        }
        return cancelButton;
    }

    public JLabel getDescriptionLabel(){
        if (descriptionLabel == null){
            descriptionLabel = new JLabel();
            descriptionLabel.setText("");
        }
        return descriptionLabel;
    }

    /**
     * This method initializes jProgressBar
     *
     * @return javax.swing.JProgressBar
     */
    public JProgressBar getJProgressBar() {
        if (jProgressBar == null) {
            jProgressBar = new JProgressBar();
            jProgressBar.setName("jProgressBar");
            jProgressBar.setPreferredSize(new java.awt.Dimension(200,14));
            jProgressBar.setVisible(false);
        }
        return jProgressBar;
    }

    /* (non-Javadoc)
     * @see es.sergas.canalejo.sisegtx.model.facade.vo.StatusObserver#stateUpdated()
     */



    private class ProgresoActivo implements Runnable{
        private boolean up = true;
        public void run() {
            while (_isProgresoActivo){
                if (up) _progressValue = _progressValue+3;
                else _progressValue = _progressValue-3;
                if (_progressValue>=100) up = false;
                else if (_progressValue<=1) up = true;
                stateUpdated();
                try {
                    Thread.sleep(50);
                } catch (InterruptedException e) {
                }
            }
        }
    }
}