More and better playlist management.

git-svn-id: https://samskivert.googlecode.com/svn/trunk@177 6335cc39-0255-0410-8fd6-9bcaacd3b74c

projects/robodj/src/java/robodj/chooser/ChooserFrame.java

@@ -1,5 +1,5 @@
 //
-// $Id: ChooserFrame.java,v 1.4 2001/07/12 23:06:55 mdb Exp $
+// $Id: ChooserFrame.java,v 1.5 2001/07/13 00:11:05 mdb Exp $
 
 package robodj.chooser;
 
@@ -33,13 +33,13 @@ public class ChooserFrame
 
         // the top of the UI is the browser and the playlist manager
         JTabbedPane tpane = new JTabbedPane();
-        BrowsePanel bpanel = new BrowsePanel();
-        String tip = "Browse and select tunes to play.";
-        tpane.addTab("Browse", null, bpanel, tip);
-
         PlaylistPanel ppanel = new PlaylistPanel();
-        tip = "View and manipulate the playlist.";
+        String tip = "View and manipulate the playlist.";
         tpane.addTab("Playlist", null, ppanel, tip);
+
+        BrowsePanel bpanel = new BrowsePanel();
+        tip = "Browse and select tunes to play.";
+        tpane.addTab("Browse", null, bpanel, tip);
         top.add(tpane);
 
         // the bottom is the control bar
@@ -50,8 +50,6 @@ public class ChooserFrame
         // add some fake control buttons for now
         cbar.add(_pause = createControlButton("Pause", "pause"));
         cbar.add(createControlButton("Stop", "stop"));
-        cbar.add(createControlButton("Skip", "skip"));
-        cbar.add(createControlButton("Clear", "clear"));
         cbar.add(createControlButton("Exit", "exit"));
 
 	// stick it into the frame

projects/robodj/src/java/robodj/chooser/PlaylistPanel.java

@@ -1,17 +1,26 @@
 //
-// $Id: PlaylistPanel.java,v 1.1 2001/07/12 23:06:55 mdb Exp $
+// $Id: PlaylistPanel.java,v 1.2 2001/07/13 00:11:05 mdb Exp $
 
 package robodj.chooser;
 
+import java.awt.Color;
+import java.awt.Font;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
+import java.sql.SQLException;
+import java.util.ArrayList;
 import javax.swing.*;
 
 import com.samskivert.swing.*;
+import com.samskivert.swing.util.*;
+import com.samskivert.util.StringUtil;
+
+import robodj.Log;
+import robodj.repository.*;
 
 public class PlaylistPanel
     extends JPanel
-    implements ActionListener
+    implements TaskObserver, ActionListener
 {
     public PlaylistPanel ()
     {
@@ -31,11 +40,29 @@ public class PlaylistPanel
 	JScrollPane bscroll = new JScrollPane(_bpanel);
         add(bscroll);
 
-        // add our navigation button
+        GroupLayout bgl = new HGroupLayout(GroupLayout.NONE);
-        _clearbut = new JButton("Clear");
+        bgl.setJustification(GroupLayout.RIGHT);
-        _clearbut.setActionCommand("clear");
+        JPanel cbar = new JPanel(bgl);
-        _clearbut.addActionListener(this);
+
-        add(_clearbut, GroupLayout.FIXED);
+        // add our control buttons
+        cbar.add(_clearbut = createControlButton("Clear", "clear"));
+        cbar.add(createControlButton("Skip", "skip"));
+        cbar.add(createControlButton("Refresh", "refresh"));
+        add(cbar, GroupLayout.FIXED);
+
+        // use a special font for our name buttons
+        _nameFont = new Font("Helvetica", Font.PLAIN, 10);
+
+        // load up the playlist
+        refreshPlaylist();
+    }
+
+    protected JButton createControlButton (String label, String action)
+    {
+        JButton cbut = new JButton(label);
+        cbut.setActionCommand(action);
+        cbut.addActionListener(this);
+        return cbut;
     }
 
     public void actionPerformed (ActionEvent e)
@@ -45,9 +72,181 @@ public class PlaylistPanel
 
         } else if (cmd.equals("clear")) {
             Chooser.scontrol.clear();
+
+        } else if (cmd.equals("skip")) {
+            Chooser.scontrol.skip();
+
+        } else if (cmd.equals("refresh")) {
+            refreshPlaylist();
+
+        } else if (cmd.equals("skipto")) {
+            JButton src = (JButton)e.getSource();
+            PlaylistEntry entry =
+                (PlaylistEntry)src.getClientProperty("entry");
+            Chooser.scontrol.skipto(entry.song.songid);
+            refreshPlaylist();
+
+        } else if (cmd.equals("remove")) {
+            JButton src = (JButton)e.getSource();
+            PlaylistEntry entry =
+                (PlaylistEntry)src.getClientProperty("entry");
+            Chooser.scontrol.remove(entry.song.songid);
+            refreshPlaylist();
+        }
+    }
+
+    protected void refreshPlaylist ()
+    {
+        // stick a "loading" label in the list to let the user know
+        // what's up
+        _bpanel.removeAll();
+        _bpanel.add(new JLabel("Loading..."));
+
+        // start up the task that reads the CD info from the database
+        TaskMaster.invokeMethodTask("readPlaylist", this, this);
+    }
+
+    public void readPlaylist ()
+        throws SQLException
+    {
+        // clear out any previous playlist
+        _plist.clear();
+
+        // find out what's currently playing
+        String playing = Chooser.scontrol.getPlaying();
+        playing = StringUtil.split(playing, ":")[1].trim();
+        _playid = -1;
+        if (!playing.equals("<none>")) {
+            try {
+                _playid = Integer.parseInt(playing);
+            } catch (NumberFormatException nfe) {
+                Log.warning("Unable to parse currently playing id '" +
+                            playing + "'.");
+            }
+        }
+
+        // get the playlist from the music daemon
+        String[] plist = Chooser.scontrol.getPlaylist();
+
+        // parse it into playlist entries
+        for (int i = 0; i < plist.length; i++) {
+            String[] toks = StringUtil.split(plist[i], "\t");
+            int eid, sid;
+            try {
+                eid = Integer.parseInt(toks[0]);
+                sid = Integer.parseInt(toks[1]);
+            } catch (NumberFormatException nfe) {
+                Log.warning("Bogus playlist record: '" + plist[i] + "'.");
+                continue;
+            }
+            Entry entry = Chooser.model.getEntry(eid);
+            Song song = entry.getSong(sid);
+            _plist.add(new PlaylistEntry(entry, song));
+        }
+    }
+
+    public void taskCompleted (String name, Object result)
+    {
+	if (name.equals("readPlaylist")) {
+            populatePlaylist();
+        }
+    }
+
+    public void taskFailed (String name, Throwable exception)
+    {
+        String msg;
+        if (Exception.class.equals(exception.getClass())) {
+            msg = exception.getMessage();
+        } else {
+            msg = exception.toString();
+        }
+        JOptionPane.showMessageDialog(this, msg, "Error",
+                                      JOptionPane.ERROR_MESSAGE); 
+        Log.logStackTrace(exception);
+    }
+
+    protected void populatePlaylist ()
+    {
+        // clear out any existing children
+        _bpanel.removeAll();
+
+        // adjust our layout policy
+        GroupLayout gl = (GroupLayout)_bpanel.getLayout();
+        gl.setOffAxisPolicy(GroupLayout.EQUALIZE);
+        gl.setOffAxisJustification(GroupLayout.LEFT);
+
+        // add buttons for every entry
+        String title = null;
+        for (int i = 0; i < _plist.size(); i++) {
+            PlaylistEntry entry = (PlaylistEntry)_plist.get(i);
+
+            // add record/artist indicators when the record and artist
+            // changes
+            if (!entry.entry.title.equals(title)) {
+                title = entry.entry.title;
+                JLabel label = new JLabel(entry.entry.title + " - " +
+                                          entry.entry.artist);
+                _bpanel.add(label);
+            }
+
+            // create a browse and a play button
+            JPanel hpanel = new JPanel();
+            gl = new HGroupLayout(GroupLayout.NONE);
+            gl.setOffAxisPolicy(GroupLayout.STRETCH);
+            gl.setJustification(GroupLayout.LEFT);
+            hpanel.setLayout(gl);
+
+            entry.label = new JLabel(entry.song.title);
+            if (entry.song.songid == _playid) {
+                entry.label.setForeground(Color.red);
+            }
+            entry.label.setFont(_nameFont);
+            hpanel.add(entry.label);
+
+            JButton button;
+            button = new JButton("Skip to");
+            button.setFont(_nameFont);
+            button.setActionCommand("skipto");
+            button.addActionListener(this);
+            button.putClientProperty("entry", entry);
+            hpanel.add(button);
+
+            button = new JButton("Remove");
+            button.setActionCommand("remove");
+            button.setFont(_nameFont);
+            button.addActionListener(this);
+            button.putClientProperty("entry", entry);
+            hpanel.add(button);
+
+            _bpanel.add(hpanel);
+        }
+
+        // if there were no entries, stick a label in to that effect
+        if (_plist.size() == 0) {
+            _bpanel.add(new JLabel("Nothing playing."));
+        }
+    }
+
+    protected static class PlaylistEntry
+    {
+        public Entry entry;
+
+        public Song song;
+
+        public JLabel label;
+
+        public PlaylistEntry (Entry entry, Song song)
+        {
+            this.entry = entry;
+            this.song = song;
         }
     }
 
     protected JPanel _bpanel;
     protected JButton _clearbut;
+
+    protected ArrayList _plist = new ArrayList();
+    protected int _playid;
+
+    protected Font _nameFont;
 }