Finalized Zino's changes, and many other things.

* added broadcast command
* added interface for distinguishing command line commands
* added button to switch from english to dutch (work in progress)
* fixed playlist viewer and now uses list models.

src/main/java/handiebot/HandieBot.java

@@ -30,7 +30,9 @@ import java.util.*;
  */
 public class HandieBot {
 
+    //Application name is the name of application as it appears on display window.
     public static final String APPLICATION_NAME = "HandieBot";
+    //The token required for logging into Discord. This is secure and must not be in the source code on GitHub.
     private static final String TOKEN;
     static {
         TOKEN = readToken();
@@ -39,15 +41,16 @@ public class HandieBot {
             System.exit(-1);
         }
     }
+    //Variable to enable or disable GUI.
     private static boolean USE_GUI = true;
-
-    public static final ResourceBundle resourceBundle = ResourceBundle.getBundle("Strings");
+    //Resource bundle for localized strings.
+    public static ResourceBundle resourceBundle = ResourceBundle.getBundle("Strings");
 
     //Discord client object.
     public static IDiscordClient client;
 
     //Display objects.
-    private static BotWindow window;
+    public static BotWindow window;
     public static BotLog log;
 
     //The cross-guild music player.

src/main/java/handiebot/command/Commands.java

@@ -1,5 +1,6 @@
 package handiebot.command;
 
+import handiebot.command.commands.admin.BroadcastCommand;
 import handiebot.command.commands.admin.QuitCommand;
 import handiebot.command.commands.admin.SetPrefixCommand;
 import handiebot.command.commands.misc.TengwarCommand;
@@ -42,6 +43,7 @@ public class Commands {
         commands.add(new InfoCommand());
         commands.add(new SetPrefixCommand());
         commands.add(new QuitCommand());
+        commands.add(new BroadcastCommand());
         commands.add(new TengwarCommand());
     }
 

src/main/java/handiebot/command/commands/admin/BroadcastCommand.java

@@ -0,0 +1,33 @@
+package handiebot.command.commands.admin;
+
+import handiebot.command.CommandContext;
+import handiebot.command.types.CommandLineCommand;
+import handiebot.command.types.ContextCommand;
+import handiebot.utils.MessageUtils;
+import sx.blah.discord.handle.obj.IGuild;
+
+import static handiebot.HandieBot.*;
+import static handiebot.utils.MessageUtils.sendMessage;
+
+/**
+ * @author Andrew Lalis
+ * Command to broadcast a message to all guilds the bot is connected to.
+ */
+public class BroadcastCommand extends ContextCommand implements CommandLineCommand {
+
+    public BroadcastCommand() {
+        super("broadcast",
+                "<message>",
+                resourceBundle.getString("commands.command.broadcast.description"),
+                8);
+    }
+
+    @Override
+    public void execute(CommandContext context) {
+        String message = MessageUtils.getTextFromArgs(context.getArgs(), 0);
+        for (IGuild guild : client.getGuilds()){
+            sendMessage(message, musicPlayer.getChatChannel(guild));
+        }
+    }
+
+}

src/main/java/handiebot/command/commands/admin/QuitCommand.java

@@ -1,6 +1,7 @@
 package handiebot.command.commands.admin;
 
 import handiebot.HandieBot;
+import handiebot.command.types.CommandLineCommand;
 import handiebot.command.types.StaticCommand;
 
 import static handiebot.HandieBot.resourceBundle;
@@ -9,7 +10,7 @@ import static handiebot.HandieBot.resourceBundle;
  * @author Andrew Lalis
  * Command to quit the entire bot. This shuts down every guild's support, and the GUI.
  */
-public class QuitCommand extends StaticCommand {
+public class QuitCommand extends StaticCommand implements CommandLineCommand {
 
     public QuitCommand() {
         super("quit",

src/main/java/handiebot/command/commands/music/PlaylistCommand.java

@@ -20,8 +20,7 @@ import java.text.MessageFormat;
 import java.util.ArrayList;
 import java.util.List;
 
-import static handiebot.HandieBot.log;
-import static handiebot.HandieBot.resourceBundle;
+import static handiebot.HandieBot.*;
 import static handiebot.utils.MessageUtils.sendMessage;
 import static handiebot.utils.YoutubeSearch.WATCH_URL;
 
@@ -101,13 +100,16 @@ public class PlaylistCommand extends ContextCommand {
         if (context.getArgs().length >= 2) {
             Playlist playlist = new Playlist(context.getArgs()[1]);
             playlist.save();
+            if (context.getArgs().length > 2) {
                 for (int i = 2; i < context.getArgs().length; i++) {
                     String url = context.getArgs()[i];
                     playlist.loadTrack(url);
                 }
                 playlist.save();
+            }
             log.log(BotLog.TYPE.INFO, MessageFormat.format(resourceBundle.getString("commands.command.playlist.createdPlaylist.log"), playlist.getName(), playlist.getTrackCount()));
             sendMessage(MessageFormat.format(resourceBundle.getString("commands.command.playlist.createdPlaylist.message"), playlist.getName(), this.getPrefixedName(context.getGuild()), playlist.getName()), context.getChannel());
+            window.updatePlaylistNames();//Refresh the list of names in the GUI.
         } else {
             sendMessage(resourceBundle.getString("commands.command.playlist.error.createPlaylistName"), context.getChannel());
         }
@@ -126,6 +128,7 @@ public class PlaylistCommand extends ContextCommand {
             if (success){
                 log.log(BotLog.TYPE.INFO, MessageFormat.format(resourceBundle.getString("commands.command.playlist.delete.log"), context.getArgs()[1]));
                 sendMessage(MessageFormat.format(resourceBundle.getString("commands.command.playlist.delete.message"), context.getArgs()[1]), context.getChannel());
+                window.updatePlaylistNames();//Refresh the list of names in the GUI.
             } else {
                 log.log(BotLog.TYPE.ERROR, MessageFormat.format(resourceBundle.getString("commands.command.playlist.error.delete.log"), context.getArgs()[1]));
                 sendMessage(resourceBundle.getString("commands.command.playlist.error.delete.message"), context.getChannel());

src/main/java/handiebot/command/types/CommandLineCommand.java

@@ -0,0 +1,8 @@
+package handiebot.command.types;
+
+/**
+ * @author Andrew Lalis
+ * If a command implements this Interface, it is marked as safe to use in the command line.
+ */
+public interface CommandLineCommand {
+}

src/main/java/handiebot/command/types/ReactionListener.java

@@ -8,6 +8,6 @@ import sx.blah.discord.handle.impl.events.guild.channel.message.reaction.Reactio
  */
 public interface ReactionListener {
 
-    public void onReactionEvent(ReactionEvent event);
+    void onReactionEvent(ReactionEvent event);
 
 }

src/main/java/handiebot/lavaplayer/playlist/Playlist.java

@@ -22,7 +22,7 @@ import static handiebot.HandieBot.resourceBundle;
  * on the playlist.
  */
 public class Playlist {
-
+//TODO: Externalize strings.
     private String name;
 
     private List<UnloadedTrack> tracks;
@@ -119,7 +119,7 @@ public class Playlist {
      * @param listLength The number of items in a potential list to choose from.
      * @return A pseudo-random choice as to which item to pick from the list.
      */
-    public static int getShuffledIndex(int listLength){
+    private static int getShuffledIndex(int listLength){
         float threshold = 0.2f;
         int trueLength = listLength - (int)(threshold*(float)listLength);
         Random rand = new Random();
@@ -160,13 +160,11 @@ public class Playlist {
      */
     public void load(){
         String path = System.getProperty("user.home")+"/.handiebot/playlist/"+name.replace(" ", "_")+".txt";
-        log.log(BotLog.TYPE.MUSIC, "Loading playlist from: "+path);
         File playlistFile = new File(path);
         if (playlistFile.exists()){
             try {
                 List<String> lines = Files.readAllLines(Paths.get(playlistFile.toURI()));
                 int trackCount = Integer.parseInt(lines.remove(0));
-                this.name = name;
                 this.tracks = new ArrayList<>(trackCount);
                 for (int i = 0; i < trackCount; i++){
                     String[] words = lines.remove(0).split(" / ");

src/main/java/handiebot/view/BotWindow.java

@@ -2,7 +2,6 @@ package handiebot.view;
 
 import handiebot.HandieBot;
 import handiebot.lavaplayer.playlist.Playlist;
-import handiebot.lavaplayer.playlist.UnloadedTrack;
 
 import javax.imageio.ImageIO;
 import javax.swing.*;
@@ -30,6 +29,7 @@ public class BotWindow extends JFrame {
     private JList<String> playlistNamesList;
     private JList<String> currentPlaylistList;
     private ListSelectionListener playlistListener;
+    private JPanel playlistDisplayPanel;
 
     public BotWindow(){
         super(HandieBot.APPLICATION_NAME);
@@ -37,6 +37,7 @@ public class BotWindow extends JFrame {
         //Output area.
         outputArea = new JTextPane();
         outputArea.setBackground(Color.white);
+        outputArea.setEditable(false);
         JScrollPane scrollPane = new JScrollPane();
         scrollPane.setViewportView(outputArea);
         scrollPane.setAutoscrolls(true);
@@ -49,24 +50,24 @@ public class BotWindow extends JFrame {
         this.playlistNamesList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
         this.currentPlaylistList = new JList<>(this.currentPlaylistModel);
         this.currentPlaylistList.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
-        this.playlistListener = e -> {
-            System.out.println("user updated list.");
-            updatePlaylistData();
-        };
-        this.playlistNamesList.addListSelectionListener(this.playlistListener);
-        updatePlaylistData();
 
-        JPanel playlistDisplayPanel = new JPanel(new BorderLayout());
+        updatePlaylistNames();
+        this.playlistNamesList.addListSelectionListener(new PlaylistSelectionListener(this.currentPlaylistModel));
 
-        //Song names scroll pane.
-        JScrollPane songNamesScrollPane = new JScrollPane(this.currentPlaylistList);
-        songNamesScrollPane.setPreferredSize(new Dimension(250, 200));
-        playlistDisplayPanel.add(songNamesScrollPane, BorderLayout.PAGE_END);
+        //Create the panel to hold both of the sub-panels.
+        playlistDisplayPanel = new JPanel();
+        playlistDisplayPanel.setPreferredSize(new Dimension(250, 0));
+        playlistDisplayPanel.setLayout(new BorderLayout());
 
         //Playlist name scroll pane.
         JScrollPane playlistNamesScrollPane = new JScrollPane(playlistNamesList);
-        playlistNamesScrollPane.setPreferredSize(new Dimension(250, 1000));
-        playlistDisplayPanel.add(playlistNamesScrollPane, BorderLayout.CENTER);
+        playlistNamesScrollPane.setColumnHeaderView(new JLabel("Playlists"));
+        playlistDisplayPanel.add(playlistNamesScrollPane, BorderLayout.PAGE_START);
+
+        //Song names scroll pane.
+        JScrollPane songNamesScrollPane = new JScrollPane(this.currentPlaylistList);
+        songNamesScrollPane.setColumnHeaderView(new JLabel("Selected Playlist"));
+        playlistDisplayPanel.add(songNamesScrollPane, BorderLayout.CENTER);
 
         getContentPane().add(playlistDisplayPanel, BorderLayout.EAST);
 
@@ -99,7 +100,6 @@ public class BotWindow extends JFrame {
             e.printStackTrace();
         }
         setJMenuBar(new MenuBar(this));
-        //SelectionController controller = new SelectionController();
         setPreferredSize(new Dimension(800, 600));
         pack();
         setLocationRelativeTo(null);
@@ -107,50 +107,21 @@ public class BotWindow extends JFrame {
     }
 
     /**
-     * Sets the playlist data in the window.
+     * Updates the list of playlist names.
      */
-    private void updatePlaylistData() {
+    public void updatePlaylistNames(){
         List<String> playlistNames = Playlist.getAvailablePlaylists();
-        this.playlistNamesList.removeListSelectionListener(this.playlistListener);
         this.playlistNamesModel.clear();
         for (String name : playlistNames){
             this.playlistNamesModel.addElement(name);
         }
-        this.playlistNamesList.addListSelectionListener(this.playlistListener);
-        String selectedValue = this.playlistNamesList.getSelectedValue();
-        System.out.println("selected value: "+selectedValue);
-        if (selectedValue != null && Playlist.playlistExists(selectedValue)){
-            Playlist playlist = new Playlist(selectedValue);
-            playlist.load();
-            List<UnloadedTrack> tracks = playlist.getTracks();
-            this.currentPlaylistModel.clear();
-            for (int i = 0; i < playlist.getTrackCount(); i++){
-                this.currentPlaylistModel.addElement(tracks.get(i).getTitle());
     }
-        }
-        /*
-        this.playlistNamesList.addListSelectionListener(e -> {
-            String name = playlistNamesList.getSelectedValue();
-            String path = System.getProperty("user.home") + "/.handiebot/playlist/" + name + ".txt";
-            File playlistFile = new File(path);
-            if (playlistFile.exists()) {
-                try {
-                    List<String> lines = Files.readAllLines(Paths.get(playlistFile.toURI()));
-                    int trackCount = Integer.parseInt(lines.remove(0));
-                    String[] words = {"A"};
-                    StringBuilder sb = new StringBuilder();
-                    for (int i1 = 0; i1 < trackCount; i1++) {
-                        words = lines.remove(0).split(" / ");
-                        sb.append(i1 +1).append(". ").append(words[0]).append("\n");
-                    }
-                    if(!words[0].equals("A")) {
-                        pane.setText(sb.toString());
-                    }
-                } catch (IOException ioe) {
-                    ioe.printStackTrace();
-                }
-            }
-        });*/
+
+    /**
+     * Sets the playlists panel as visible or invisible.
+     */
+    public void togglePlaylistsVisibility(){
+        this.playlistDisplayPanel.setVisible(!this.playlistDisplayPanel.isVisible());
     }
 
     public JTextPane getOutputArea(){

src/main/java/handiebot/view/CommandLineListener.java

@@ -1,11 +1,19 @@
 package handiebot.view;
 
-import handiebot.command.Commands;
+import handiebot.HandieBot;
+import handiebot.command.CommandContext;
+import handiebot.command.types.Command;
+import handiebot.command.types.CommandLineCommand;
+import handiebot.command.types.ContextCommand;
+import handiebot.command.types.StaticCommand;
 
 import javax.swing.*;
 import java.awt.event.KeyEvent;
 import java.awt.event.KeyListener;
 
+import static handiebot.HandieBot.log;
+import static handiebot.command.Commands.commands;
+
 /**
  * @author Andrew Lalis
  * Class to listen for commands from the console command line.
@@ -26,7 +34,7 @@ public class CommandLineListener implements KeyListener {
             String command = words[0];
             String[] args = new String[words.length-1];
             System.arraycopy(words, 1, args, 0, words.length - 1);
-            executeCommand(command, args);
+            executeCommand(command, new CommandContext(HandieBot.client.getOurUser(), null, null, args));
         }
     }
 
@@ -35,15 +43,21 @@ public class CommandLineListener implements KeyListener {
     }
 
     /**
-     * Executes a given command on the command line.
+     * Executes a given command on the command line. This must be written separate from the {@code executeCommand}
+     * method in {@code Commands}, because here, no permissions may be checked.
      * @param command The first word typed, or the command itself.
-     * @param args The list of arguments for the command.
+     * @param context The list of arguments for the command.
      */
-    private void executeCommand(String command, String[] args) {
-        switch (command) {
-            case "quit":
-                Commands.executeCommand("quit", null);
-                break;
+    private void executeCommand(String command, CommandContext context) {
+        for (Command cmd : commands){
+            if (cmd.getName().equals(command) && (cmd instanceof CommandLineCommand)){
+                log.log(BotLog.TYPE.COMMAND, "Command issued: "+command);
+                if (cmd instanceof StaticCommand){
+                    ((StaticCommand) cmd).execute();
+                } else if (cmd instanceof ContextCommand){
+                    ((ContextCommand) cmd).execute(context);
+                }
+            }
         }
     }
 }

src/main/java/handiebot/view/MenuBar.java

@@ -5,6 +5,8 @@ import handiebot.view.actions.ActionItem;
 import handiebot.view.actions.CommandAction;
 
 import javax.swing.*;
+import java.util.Locale;
+import java.util.ResourceBundle;
 
 import static handiebot.HandieBot.resourceBundle;
 
@@ -13,7 +15,7 @@ import static handiebot.HandieBot.resourceBundle;
  * Custom menu bar to be added to the console control panel.
  */
 public class MenuBar extends JMenuBar {
-
+//TODO: Implement a way to restart the program in nederlands.
     private BotWindow window;
     private int language;
 
@@ -24,6 +26,10 @@ public class MenuBar extends JMenuBar {
             this.add(fileMenu);
         JMenu viewMenu = new JMenu(resourceBundle.getString("menu.viewMenu.view"));
             JMenu language =  new JMenu(resourceBundle.getString("menu.viewMenu.language"));
+                language.add(new ActionItem(resourceBundle.getString("menu.viewMenu.language.english"), e -> resourceBundle = ResourceBundle.getBundle("Strings", Locale.US)));
+                language.add(new ActionItem(resourceBundle.getString("menu.viewMenu.language.dutch"), e -> resourceBundle = ResourceBundle.getBundle("Strings", Locale.forLanguageTag("nl"))));
+            viewMenu.add(language);
+            viewMenu.add(new ActionItem(resourceBundle.getString("menu.viewMenu.playlistsVisible"), e -> window.togglePlaylistsVisibility()));
             this.add(viewMenu);
     }
 

src/main/java/handiebot/view/PlaylistSelectionListener.java

@@ -0,0 +1,47 @@
+package handiebot.view;
+
+import handiebot.lavaplayer.playlist.Playlist;
+import handiebot.lavaplayer.playlist.UnloadedTrack;
+
+import javax.swing.*;
+import javax.swing.event.ListSelectionEvent;
+import javax.swing.event.ListSelectionListener;
+import java.util.List;
+
+/**
+ * @author Andrew Lalis
+ * Listens for if the user selects a playlist from the list.
+ */
+public class PlaylistSelectionListener implements ListSelectionListener {
+
+    private DefaultListModel<String> songsListModel;
+
+    public PlaylistSelectionListener(DefaultListModel<String> songsListModel){
+        this.songsListModel = songsListModel;
+    }
+
+    @Override
+    public void valueChanged(ListSelectionEvent e) {
+        if (e.getValueIsAdjusting()){
+            updatePlaylistData((JList<String>) e.getSource());
+        }
+    }
+
+    /**
+     * Updates the list of songs for a selected playlist.
+     * Does not update the list of playlists.
+     */
+    private void updatePlaylistData(JList<String> playlistNamesList) {
+        String selectedValue = playlistNamesList.getSelectedValue();
+        if (selectedValue != null && Playlist.playlistExists(selectedValue)){
+            Playlist playlist = new Playlist(selectedValue);
+            playlist.load();
+            List<UnloadedTrack> tracks = playlist.getTracks();
+            songsListModel.clear();
+            for (int i = 0; i < playlist.getTrackCount(); i++){
+                songsListModel.addElement(tracks.get(i).getTitle());
+            }
+        }
+    }
+
+}

src/main/resources/Strings.properties

@@ -16,9 +16,11 @@ window.close.title=Confirm shutdown
 #MenuBar
 menu.fileMenu.title=File
 menu.fileMenu.quit=Quit
-menu.editMenu.edit=Edit
 menu.viewMenu.view=View
 menu.viewMenu.language=Language
+menu.viewMenu.language.english=English
+menu.viewMenu.language.dutch=Dutch
+menu.viewMenu.playlistsVisible=Playlists
 #Actions
 action.menu.playlist=Edit playlists
 action.menu.playlist.add=Add
@@ -40,6 +42,7 @@ commands.command.info.embed.helpCommand=Receive a message with a detailed list o
 commands.command.info.embed.playCommand=Play a song, or add it to the queue if one is already playing. A URL can be a YouTube or SoundCloud link.
 commands.command.info.embed.queueCommand=Show a list of songs that will soon be played.
 commands.command.quit.description=Shuts down the bot on all servers.
+commands.command.broadcast.description=Broadcasts a message to every server the bot is connected to.
 commands.command.setPrefix.description=Sets the prefix for commands.
 commands.command.setPrefix.changed=Changed command prefix to "{0}"
 commands.command.setPrefix.noPrefixError=You must provide a new prefix.