source: main/trunk/greenstone3/src/java/org/greenstone/admin/guiext/PanelStep.java@ 21919

package org.greenstone.admin.guiext;

import org.w3c.dom.Element;

import javax.swing.JButton;
import javax.swing.JPanel;

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

import java.lang.reflect.Constructor;

public class PanelStep extends Step
{
    String _controlPanelClass = null;

    public PanelStep(Element panelStepElement, SequenceList parent)
    {
    super(panelStepElement, parent);

    if(panelStepElement != null){

        _controlPanelClass = ExtXMLHelper.getValueFromSingleElement(panelStepElement, ExtXMLHelper.CLASS, true);

        if(_controlPanelClass == null || _controlPanelClass.equals("")){
        System.err.println("The <" + ExtXMLHelper.CLASS + "> element inside this panel <" + ExtXMLHelper.STEP + "> either does not exist or is empty");
        }
        
        _button.addActionListener(new PanelButtonListener());   
    }
    else{
         System.err.println("This panel <" + ExtXMLHelper.STEP + "> element is null");
    }
    }

    public class PanelButtonListener implements ActionListener
    {
    public void actionPerformed(ActionEvent e)
    {
        _parent.getParent().loadGuiExtFile();

        Class controlPanelClass = null;
        try{
        controlPanelClass = Class.forName(_controlPanelClass);
        }
        catch(Exception ex){
        ex.printStackTrace();
        return;
        }

        Object classObj = null;
        try{
        Constructor classConstructor = controlPanelClass.getConstructor(new Class[0]);
        classObj = classConstructor.newInstance(new Object[0]);
        }
        catch(Exception ex){
        System.err.println("Could not create the control panel class, either the class name is incorrect or the class does not exist inside the guiext.jar file");
        return;
        }
        
        _parent.getParent().changeExtPane(((BasePanel)(classObj)).getControlPanel());

        _parent.registerStepCompletion(PanelStep.this);
    }
    }
}