Initial

bukkit/src/main/java/org/zhdev/varioutil/bukkit/command/AbstractPluginCommand.java

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+package org.zhdev.varioutil.bukkit.command;
+
+import org.bukkit.command.*;
+import org.bukkit.plugin.Plugin;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.List;
+
+public abstract class AbstractPluginCommand extends Command implements PluginIdentifiableCommand {
+    private final Plugin plugin;
+
+    protected AbstractPluginCommand(@NotNull String name, Plugin plugin) {
+        super(name);
+        this.plugin = plugin;
+    }
+
+    protected abstract boolean onExecute(@NotNull CommandSender sender, @NotNull String label, @NotNull String[] args);
+
+    protected abstract List<String> onTabComplete(@NotNull CommandSender sender, @NotNull String label, @NotNull String[] args);
+
+    @Override
+    public boolean execute(@NotNull CommandSender sender, @NotNull String label, @NotNull String[] args) {
+        if (!plugin.isEnabled()) {
+            throw new CommandException("Cannot execute command '" + label + "' in plugin " + plugin.getDescription().getFullName() + " - plugin is disabled.");
+        }
+
+        if (!testPermission(sender)) {
+            return true;
+        }
+
+        try {
+            return onExecute(sender, label, args);
+        } catch (Throwable ex) {
+            throw new CommandException("Unhandled exception executing command '" + label + "' in plugin " + plugin.getDescription().getFullName(), ex);
+        }
+    }
+
+    @NotNull
+    @Override
+    public List<String> tabComplete(@NotNull CommandSender sender, @NotNull String label, @NotNull String[] args) throws IllegalArgumentException {
+        List<String> completions;
+        try {
+            completions = onTabComplete(sender, label, args);
+        } catch (Throwable ex) {
+            StringBuilder message = new StringBuilder();
+            message.append("Unhandled exception during tab completion for command '/").append(label).append(' ');
+            for (String arg : args) {
+                message.append(arg).append(' ');
+            }
+            message.deleteCharAt(message.length() - 1).append("' in plugin ").append(plugin.getDescription().getFullName());
+            throw new CommandException(message.toString(), ex);
+        }
+
+        if (completions == null) {
+            return super.tabComplete(sender, label, args);
+        }
+        return completions;
+    }
+
+    @NotNull
+    @Override
+    public Plugin getPlugin() {
+        return plugin;
+    }
+}