package genegui;

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
import javax.swing.*;

import affectors.*;
import main.*;

/** AffectorViewPanel.java
 Displays information about an An Affector Template and allows some values to
 be modified.
 @author WJS
 */
public class AffectorViewPanel extends JPanel implements GuiInterface  {
	
	/** The MainGui object that this belongs to */
	private MainGui                          TheMainGui;
	/** The AFfector Template */
	private AffectorTemplate                 TheTemplate;
	
	public AffectorViewPanel(AffectorTemplate affectorTemplate, MainGui theMainGui) {
		
		TheTemplate = affectorTemplate;
		TheMainGui = theMainGui;
		
		setLayout(new BoxLayout(this,BoxLayout.Y_AXIS));
		setBackground(Color.lightGray);
		
		// Show the name of the Affector
		String nameString = TheTemplate.getAffectorName();
		nameString = nameString.substring(nameString.indexOf("affector.")+11);
		JLabel name = new JLabel(nameString);
		name.setFont(new Font("Helvetica",Font.BOLD,16));
		name.setOpaque(false);
		JPanel namePanel = new JPanel();
		namePanel.setBorder(BorderFactory.createMatteBorder(1,1,1,1,Color.black));
		namePanel.setLayout(new BoxLayout(namePanel,BoxLayout.X_AXIS));
		namePanel.add(name);
		JPanel filler = new JPanel();
		filler.setOpaque(false);
		namePanel.add(filler);
		namePanel.setBackground(Color.white);
		add(namePanel);
		
		// Create all the sub-panels, one for each parameter
		AffectorViewSubPanel subPanel;
		int parameterNumber;
		Enumeration e = TheTemplate.getAffectorParameters();
		while (e.hasMoreElements()) {
			parameterNumber = ((Integer)e.nextElement()).intValue();
			subPanel = new AffectorViewSubPanel(parameterNumber);
			add(subPanel);
		}
		
		// Add the set button that applies all changes
		JPanel p = new JPanel();
		p.setBackground(Color.lightGray);
		p.setLayout(new BorderLayout());
		JButton setButton = new JButton("Apply Changes");
		setButton.setOpaque(false);
		setButton.addActionListener(new ActionListener() {
					public void actionPerformed(ActionEvent ae) {
						setValues();
					}
				});
		p.add(setButton,BorderLayout.CENTER);
		add(p);
		
	}
	
	/** Reads the parameter values from the JTextFields and applys them to the
	 Network.
	 @author WJS
	 */
	private void setValues() {
		
		Component c[] = getComponents();
		for (int i=0;i<c.length;i++) {
			if (c[i] instanceof AffectorViewSubPanel) {
				Affector.setParamValue(((AffectorViewSubPanel)c[i]).getParameterNumber(),((AffectorViewSubPanel)c[i]).getParameterValue());
        TheMainGui.parameterSetChanged(GuiInterface.PARAMETER_CHANGED,((AffectorViewSubPanel)c[i]).getParameterNumber(),this);
			}
		}
		// Notify the MainGui of change so it can be passed on to others
		TheMainGui.affectorTemplateChanged(GuiInterface.CHANGED,TheTemplate,this);
		
	}
	
	/** Updates all the affector display sub panels.
	 @author WJS
	 */
	public void updateTemplate() {
		
		Component c[] = getComponents();
		for (int i=0;i<c.length;i++) {
			if (c[i] instanceof AffectorViewSubPanel) {
				((AffectorViewSubPanel)c[i]).updateTemplate();
			}
		}
		
	}
	
	
	/******************** GUItoNet Interface implementation *********************/
	
	
	/** Called when a change is made to the passed AffectorTemplate
	 @param int operation
	 @param AffectorTemplate affectorTemplate
	 @param GuiInterface source - Originator of this interface change.
	 @author WJS
	 */
	public void affectorTemplateChanged(int operation, AffectorTemplate affectorTemplate, GuiInterface source) {
		
		switch (operation) {
			case GuiInterface.ADDED:
				break;
			case GuiInterface.CHANGED:
				if (affectorTemplate==TheTemplate)
					updateTemplate();
				break;
			case GuiInterface.REMOVED:
				break;
		}
		
	}
	
	/** Method for invoking general network IO operations.
	 @param int operation - The network IO operation code.
	 @param File file - The file if needed, else don't care.
	 @author WJS
	 */
	public boolean networkIO(int operation, File file) {
		
		boolean result = true;
		
		return(result);
		
	}
	
	/** Called when a change is made to the passed NodeTemplate
	 @param int operation
	 @param NodeTemplate nodeTemplate
	 @param GuiInterface source - Originator of this interface change.
	 @author WJS
	 */
	public void nodeTemplateChanged(int operation, NodeTemplate nodeTemplate, GuiInterface source) {
		
		// Notify other listeners.
		
	}

	/** Called when a change is made to a parameter or the whole parameter set
	 @param int operation
	 @param int parameterNumber
	 @param GuiInterface source - Originator of this interface change.
	 @author WJS
	 */
	public void parameterSetChanged(int operation, int parameterNumber, GuiInterface source) {
		
		switch (operation) {
			case GuiInterface.PARAMETER_ADDED:
				// TODO
				break;
			case GuiInterface.PARAMETER_CHANGED:
				updateTemplate();
				break;
			case GuiInterface.PARAMETER_SET_CHANGED:
				updateTemplate();
				break;
			case GuiInterface.PARAMETER_REMOVED:
				// TODO
				break;
		}
		
	}
	
	/** Method for controling model/iterator runs.
	 @param int operation - Run control code.
	 @author WJS
	 */
	public void runControl(int operation) {
		
		
	}

	/** Method for reporting status of the model/iterator runs
	 @param int operation - Run status code.
	 @author WJS
	 */
	public void runStatus(int operation) {
		
	}
	
	/** AffectorViewSubPanel.java
	 Internal class for display/edit of Parameter values.
	 @author WJS
	 */
	private class AffectorViewSubPanel extends JPanel {
		
		/** The Parameter Number */
		private int                   ParameterNumber = 0;
		/** The dimensions of the label that displays the parameter name */
		private Dimension             NameLabelDimension = new Dimension(160,20);
		/** The dimensions of the value box */
		private Dimension             ValueBoxDimension = new Dimension(200,20);
		/** The JTextField for showing/changing the parameter value */
		private JTextField            ValueField;
		
		/** Simple constructor requires only the parameter number. All the other
		 information is gotten from Affector.
		 @author WJS
		 */
		private AffectorViewSubPanel(int parameterNumber) {
			
			ParameterNumber = parameterNumber;
			
			setLayout(new BoxLayout(this,BoxLayout.X_AXIS));
			setBorder(BorderFactory.createMatteBorder(0,1,1,1,Color.black));
		  setBackground(Color.lightGray);
			
		  JLabel name = new JLabel(Affector.getParamName(parameterNumber));
			name.setMaximumSize(NameLabelDimension);
			name.setMinimumSize(NameLabelDimension);
			name.setPreferredSize(NameLabelDimension);
			name.setSize(NameLabelDimension);
			name.setHorizontalAlignment(SwingConstants.LEFT);
			add(name);
			
			ValueField = new JTextField(Float.toString(Affector.getParamValue(parameterNumber)));
			ValueField.setMaximumSize(ValueBoxDimension);
			ValueField.setMinimumSize(ValueBoxDimension);
			ValueField.setPreferredSize(ValueBoxDimension);
			ValueField.setSize(ValueBoxDimension);
			add(ValueField);
			
		}
		
		/** Returns the parameter number for the parameter represented by this panel.
		 @return int - Parameter number.
		 @author WJS
		 */
		public int getParameterNumber() {
			
			return(ParameterNumber);
			
		}
		
		/** Returns the parameter value for the parameter represented by this panel. Also
		 does error checking on entered value and resets it to the original for value
		 is bad.
		 @return float - Parameter value.
		 @author WJS
		 */
		public float getParameterValue() {
			
			float v = 0f;
			
			try {
			  v = Float.parseFloat(ValueField.getText());
			} catch (NumberFormatException nfe) {
				v = Affector.getParamValue(ParameterNumber);
				ValueField.setText(Float.toString(v));
			}
			
			return(v);
			
		}
		
		/** Updates the affector display sub panels.
		 @author WJS
		 */
		public void updateTemplate() {
			
			ValueField.setText(Float.toString(Affector.getParamValue(ParameterNumber)));
			
		}
		
	}
	
}