RemarkPanel.java

import java.io.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.BorderFactory; 
import javax.swing.border.*;

public class RemarkPanel extends JPanel implements ActionListener, FocusListener
{
	private Comment comment = new Comment();
	private JTextArea note;
	private JButton editBtn;
	private ViewPanel parent;
	
	public RemarkPanel() {}
	
	public RemarkPanel(Comment comm)
	{
		setLayout(new BorderLayout());
		comment = comm;
		
		initPanel();
	}
	
	private void initPanel()
	{
		try
		{
			//JPanel contentPanel = new JPanel(new FlowLayout());
			//JPanel contentPanel = new JPanel(new GridLayout(1, 0));
			JPanel contentPanel = new JPanel();
			contentPanel.setLayout(new BoxLayout(contentPanel, BoxLayout.PAGE_AXIS));
			
			TitledBorder titleBorder = BorderFactory.createTitledBorder(comment.getAuthor().getNickname()+" ("+comment.getKarma()+")");
			TitledBorder dateBorder = BorderFactory.createTitledBorder(BorderFactory.createEmptyBorder(), comment.getTimeEdited(),
																		TitledBorder.TRAILING, TitledBorder.ABOVE_BOTTOM);
			contentPanel.setBorder(BorderFactory.createCompoundBorder(titleBorder, dateBorder));
			
			note = new JTextArea(comment.getText());
			note.setFont(UIManager.getFont("Label.font"));
			note.addFocusListener(this);
			note.setOpaque(false);
			note.setEditable(false);
			note.setLineWrap(true);
			note.setWrapStyleWord(true);
			if(!comment.getText().equals(""))
				contentPanel.add(note);
			
			if(comment instanceof ImageComment)
			{
				ImageComment imgComment = (ImageComment)comment;
				ImageIcon im = new ImageIcon(imgComment.getImagePath());
				if(im != null)
				{
					JScrollPane imgScrollPane = new JScrollPane(new JLabel(im));
					imgScrollPane.setPreferredSize(new Dimension(Math.min(im.getIconWidth(), note.getPreferredSize().width), im.getIconHeight()+4));
					contentPanel.add(imgScrollPane);
				}
			}
			else if(comment instanceof FileComment)
			{
				FileComment fileComment = (FileComment)comment;
				JPanel filePanel = new JPanel(new FlowLayout(FlowLayout.LEADING));
				JLabel fileName = new JLabel(fileComment.getFileName());
				fileName.setFont(new Font("Default", Font.BOLD, 12));
				JButton dloadFileBtn = new JButton("Download");
				dloadFileBtn.addActionListener(this);
				filePanel.add(fileName);
				filePanel.add(dloadFileBtn);
				contentPanel.add(filePanel);
			}
			
			JPanel buttonsPanel = new JPanel();
			buttonsPanel.setLayout(new BoxLayout(buttonsPanel, BoxLayout.LINE_AXIS));
			JButton upvoteBtn = new JButton("^");
			upvoteBtn.addActionListener(this);
			upvoteBtn.setEnabled(MainFrame.currentUser.requireAccessLevel(User.AccessLevel.STUDENT));
			JButton downvoteBtn = new JButton("v");
			downvoteBtn.addActionListener(this);
			downvoteBtn.setEnabled(MainFrame.currentUser.requireAccessLevel(User.AccessLevel.STUDENT));
			
			JButton deleteBtn = new JButton("delete");
			deleteBtn.addActionListener(this);
			deleteBtn.setEnabled(MainFrame.currentUser.requireAccessLevel(User.AccessLevel.LECTURER) ||
								MainFrame.currentUser.getUsername().equals(comment.getAuthor().getUsername()));
			editBtn = new JButton("edit");
			editBtn.addActionListener(this);
			editBtn.setEnabled(MainFrame.currentUser.requireAccessLevel(User.AccessLevel.LECTURER) ||
								MainFrame.currentUser.getUsername().equals(comment.getAuthor().getUsername()));
			//JButton replyBtn = new JButton("reply");
			//replyBtn.addActionListener(this);
			//replyBtn.setEnabled(MainFrame.currentUser.requireAccessLevel(User.AccessLevel.LECTURER));
			
			buttonsPanel.add(upvoteBtn);
			buttonsPanel.add(downvoteBtn);
			buttonsPanel.add(Box.createHorizontalGlue());
			buttonsPanel.add(deleteBtn);
			buttonsPanel.add(editBtn);
			//buttonsPanel.add(replyBtn);
			
			add(contentPanel, BorderLayout.CENTER);
			add(buttonsPanel, BorderLayout.PAGE_END);
		}
		catch(NullPointerException e)
		{
			StringWriter errors = new StringWriter();
			e.printStackTrace(new PrintWriter(errors));
			
			JOptionPane.showMessageDialog(this.getTopLevelAncestor(), errors.toString(), "Error!", JOptionPane.ERROR_MESSAGE);
			System.out.println(errors.toString());
		}
		catch(Exception e)
		{
			StringWriter errors = new StringWriter();
			e.printStackTrace(new PrintWriter(errors));
			
			JOptionPane.showMessageDialog(this.getTopLevelAncestor(), errors.toString(), "Error!", JOptionPane.ERROR_MESSAGE);
			System.out.println(errors.toString());
		}
	}
	
	public void actionPerformed(ActionEvent evt)
	{
		try
		{
			String btnText = evt.getActionCommand();
			
			if(btnText.equals("^"))
			{
				comment.upvote();
			}
			else if(btnText.equals("v"))
			{
				comment.downvote();
			}
			else if(btnText.equals("delete"))
			{
				comment.deleteThis();
			}
			else if(btnText.equals("edit"))
			{
				note.setOpaque(true);
				note.setEditable(true);
				editBtn.setText("done");
				return;
			}
			else if(btnText.equals("done"))
			{
				comment.setText(note.getText());
				comment.setTimeEdited(true);
				note.setOpaque(false);
				note.setEditable(false);
				editBtn.setText("edit");
			}
			else if(btnText.equals("Download"))
			{
				FileComment fileComment = (FileComment)comment;
				JFileChooser fch = new JFileChooser();
				
				int returnVal = fch.showSaveDialog(this.getTopLevelAncestor());
				if (returnVal == JFileChooser.APPROVE_OPTION) {
					File fileDest = fch.getSelectedFile();
					FileOperation.downloadFile(fileComment.getFile(), fileDest);
				}
			}
			else
			{
				JOptionPane.showMessageDialog(this.getTopLevelAncestor(), "Y U No Implement?");
			}
			
			parent = (ViewPanel)getParent();
			if(parent != null)
				parent.refresh();
		}
		catch(Exception e)
		{
			StringWriter errors = new StringWriter();
			e.printStackTrace(new PrintWriter(errors));
			
			JOptionPane.showMessageDialog(this.getTopLevelAncestor(), errors.toString(), "Error!", JOptionPane.ERROR_MESSAGE);
			System.out.println(errors.toString());
		}
	}
	
	public void focusGained(FocusEvent evt) {}
	
	public void focusLost(FocusEvent evt)
	{
		comment.setText(note.getText());
		comment.setTimeEdited(true);
		note.setOpaque(false);
		note.setEditable(false);
		editBtn.setText("edit");
		
		parent = (ViewPanel)getParent();
		if(parent != null)
			parent.refresh();
	}
}