decodersettings.java

Java version of ABC/HR comparator v0.5. by schnofler. Runs on Sun JRE 1.5 or later

package abchr.settings;

import abchr.audio.CLIDecoder;
import abchr.audio.SampleFactory;
import abchr.audio.SampleProcessor;
import guiutils.LineLayout;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;

public class DecoderSettings implements Settings {
	private static final String[] path=new String[]{"Decoders"};

	private static class CLIDecoderWrapper {
		private CLIDecoder decoder;
		private String s;

		public CLIDecoderWrapper(CLIDecoder decoder) {
			this.decoder=decoder;
			s=decoder.getAcceptedExtensions()[0]+", "+decoder.getCommandLine();
		}

		public String toString(){return s;}
	}

	private static class Change {
		public static final int ADD=0;
		public static final int REMOVE=1;

		public int type;
		public CLIDecoder decoder;

		public Change(int type,CLIDecoder decoder) {
			this.decoder=decoder;
			this.type=type;
		}
	}

	private JPanel panel;
	private DefaultListModel listModel=new DefaultListModel();
	private JList list;
	private JTextField extensionField;
	private JTextField cmdLineField;

	private List changes=new LinkedList();

	public DecoderSettings() {
		File f=new File("clicodecs.cfg");
		BufferedReader reader=null;
		try {
			reader=new BufferedReader(new InputStreamReader(new FileInputStream(f)));
			String line=null;
			while((line=reader.readLine())!=null) {
				String[] cmd=line.split(",");
				if(cmd.length!=2) {
					System.out.println("Invalid line in clicodecs.cfg: "+line);
					continue;
				}
				try {
					CLIDecoder decoder=new CLIDecoder(cmd[0].trim(),cmd[1].trim());
					SampleFactory.registerDecoder(decoder);
				} catch(IllegalArgumentException e) {
					System.out.println("Invalid line in clicodecs.cfg: "+line);
				}
			}
		} catch(Exception e) {
			e.printStackTrace();
		} finally {
			if(reader!=null) {
				try{reader.close();}catch(Exception e){}
			}
		}
	}

	public String[] getPath(){return path;}

	private void initPanel() {
		if(panel!=null){return;}

		panel=new JPanel(new BorderLayout());
		list=new JList(listModel);
		panel.add(new JScrollPane(list),BorderLayout.CENTER);

		JPanel bottomPanel=new JPanel(new GridBagLayout());
		GridBagConstraints constraints=new GridBagConstraints();
		constraints.gridy=0;
		bottomPanel.add(new JLabel("Extension:  "),constraints);
		constraints.weightx=1.0f;
		constraints.fill=GridBagConstraints.HORIZONTAL;
		bottomPanel.add(extensionField=new JTextField(),constraints);
		constraints.gridy=1;
		constraints.weightx=0.0f;
		constraints.fill=GridBagConstraints.NONE;
		bottomPanel.add(new JLabel("Command:  "),constraints);
		constraints.weightx=1.0f;
		constraints.fill=GridBagConstraints.HORIZONTAL;
		bottomPanel.add(cmdLineField=new JTextField(),constraints);
		cmdLineField.setToolTipText("Use the placeholders %i for input file, %o for output file");
		JPanel buttonPanel=new JPanel(new LineLayout(LineLayout.RIGHT_ALIGN));
		JButton addButton=new JButton("Add");
		addButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				try {
					CLIDecoder decoder=new CLIDecoder(extensionField.getText(),cmdLineField.getText());
					listModel.addElement(new CLIDecoderWrapper(decoder));
					changes.add(new Change(Change.ADD,decoder));
					extensionField.setText("");
					cmdLineField.setText("");
				} catch(IllegalArgumentException ex) {
					JOptionPane.showMessageDialog(JOptionPane.getFrameForComponent(panel),"Invalid command line.\nYou must use %i and %o to specify the input and\noutput file arguments respectively","Error",JOptionPane.WARNING_MESSAGE);
				}
			}
		});
		buttonPanel.add(addButton);
		JButton removeButton=new JButton("Remove");
		removeButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				int index=list.getSelectedIndex();
				if(index==-1){return;}
				CLIDecoder decoder=((CLIDecoderWrapper)listModel.remove(index)).decoder;
				changes.add(new Change(Change.REMOVE,decoder));
			}
		});
		buttonPanel.add(removeButton);
		constraints.gridy=2;
		constraints.weightx=0.0f;
		constraints.gridwidth=2;
		bottomPanel.add(buttonPanel,constraints);

		panel.add(bottomPanel,BorderLayout.SOUTH);
	}

	public JComponent getView() {
		initPanel();
		return panel;
	}

	public void apply() {
		Change c;
		for(Iterator it=changes.iterator();it.hasNext();) {
			c=(Change)it.next();
			switch(c.type) {
				case Change.ADD:SampleFactory.registerDecoder(c.decoder);break;
				case Change.REMOVE:SampleFactory.unregisterDecoder(c.decoder);break;
			}
		}
		changes.clear();

		BufferedWriter writer=null;
		try {
			File f=new File("clicodecs.cfg");
			f.delete();
			writer=new BufferedWriter(new OutputStreamWriter(new FileOutputStream(f)));
			CLIDecoderWrapper decoder;
			for(int i=0,n=listModel.getSize();i<n;i++) {
				decoder=(CLIDecoderWrapper)listModel.get(i);
				writer.write(decoder.s.substring(1)+'\n');
			}
		} catch(IOException e) {
			e.printStackTrace();
		} finally {
			if(writer!=null) {
				try{writer.close();}catch(Exception e){}
			}
		}
	}

	public void reset() {
		changes.clear();
		listModel.clear();
		SampleProcessor[] decoders=SampleFactory.getDecoders();
		for(int i=0;i<decoders.length;i++) {
			if(decoders[i] instanceof CLIDecoder){listModel.addElement(new CLIDecoderWrapper((CLIDecoder)decoders[i]));}
		}
	}
}