import netscape_beta.application.*;
import netscape_beta.util.*;

/**
 * A class used to transfer data to and from a widow.
 * When run as an Applet, applications may not touch the
 * disk due to security restrictions.  This class solves
 * that problem by displaying an Input and Output window.
 *
 * @version        1.0 12 Dec 1996
 * @author         Andrew Miller
 */
public class AppletIOView
{
    protected TextView m_appletInput = null;
    protected TextView m_appletOutput = null;
    protected TextField m_appletInputL = null;
    protected TextField m_appletOutputL = null;

    /**
     * Construct and display an AppletIOView in the provided
     * root window.
     * @param rootView   View to display in.
     */
    public AppletIOView(RootView rootView)
    {
        rootView.setColor(Color.lightGray);

        m_appletInputL = new TextField(0,0, 300, 20);
        m_appletInputL.setStringValue("Traversal Studio Input");
        m_appletInputL.setBorder(null);
        m_appletInputL.setBackgroundColor(Color.lightGray);
        m_appletInputL.setSelectable(false);
        m_appletInputL.setEditable(false);
        
        m_appletOutputL = new TextField(320,0, 300, 20);
        m_appletOutputL.setStringValue("Traversal Studio Output");
        m_appletOutputL.setBorder(null);
        m_appletOutputL.setBackgroundColor(Color.lightGray);
        m_appletOutputL.setSelectable(false);
        m_appletOutputL.setEditable(false);
        
        // two fields for transferring data
        m_appletInput = new TextView(0, 20, 300, 300);
        m_appletOutput = new TextView(320, 20, 300, 300);

        m_appletInput.setEditable(true);
        m_appletInput.setUseSingleFont(true);
        m_appletInput.setBackgroundColor(Color.white);
        m_appletInput.setSelectionColor(Color.cyan);

        m_appletOutput.setEditable(false);
	    m_appletOutput.setSelectable(true);
        m_appletOutput.setUseSingleFont(true);
        m_appletOutput.setBackgroundColor(Color.white);
        m_appletOutput.setSelectionColor(Color.cyan);


	    rootView.addSubview(m_appletInputL);
        rootView.addSubview(m_appletOutputL);
        rootView.addSubview(m_appletInput);
	    rootView.addSubview(m_appletOutput);
    }

    /**
     * Remove an AppletIOView from it's rootview.
     */
    public void removeFromSuperView()
    {
        if(m_appletInput != null)
            m_appletInput.removeFromSuperview();
        if(m_appletOutput != null)
            m_appletOutput.removeFromSuperview();
        if(m_appletInputL != null)
            m_appletInputL.removeFromSuperview();
        if(m_appletOutputL != null)
            m_appletOutputL.removeFromSuperview();
    }

    /**
     * Retrieve the text the input window in the form of a string
     * @return    Text string containing user input
     */
    public String getAppletInput()
    {
        return m_appletInput.string();
    }

    /**
     * Set the text output window to the specified string.
     * @param    Text string containing output
     */
    public void setAppletOutput(String output)
    {
        m_appletOutput.setString(output);
    }

}