3b06ec5e08
The script engine didn't have the plugin class loader. Instead, it had the thread context class loader. The problem with this is that this prevents scripts from instantiating classes from other plugins to e.g. implement undo when WorldEdit is available. The thread context class loader is now set to the plugin class loader while instantiating the script engine which solves this issue.
86 lines
3 KiB
Java
86 lines
3 KiB
Java
package net.walterhiggins.scriptcraft;
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import org.bukkit.command.Command;
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import org.bukkit.command.CommandSender;
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import org.bukkit.event.Listener;
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import org.bukkit.plugin.java.JavaPlugin;
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import javax.script.Invocable;
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import javax.script.ScriptEngine;
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import javax.script.ScriptEngineManager;
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import java.io.InputStreamReader;
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import java.util.ArrayList;
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import java.util.List;
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public class ScriptCraftPlugin extends JavaPlugin implements Listener
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{
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// right now all ops share the same JS context/scope
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// need to look at possibly having context/scope per operator
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//protected Map<CommandSender,ScriptCraftEvaluator> playerContexts = new HashMap<CommandSender,ScriptCraftEvaluator>();
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private String NO_JAVASCRIPT_MESSAGE = "No JavaScript Engine available. ScriptCraft will not work without Javascript.";
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protected ScriptEngine engine = null;
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@Override
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public void onEnable()
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{
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Thread currentThread = Thread.currentThread();
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ClassLoader previousClassLoader = currentThread.getContextClassLoader();
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currentThread.setContextClassLoader(getClassLoader());
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try{
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ScriptEngineManager factory = new ScriptEngineManager();
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this.engine = factory.getEngineByName("JavaScript");
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if (this.engine == null){
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this.getLogger().severe(NO_JAVASCRIPT_MESSAGE);
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} else {
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Invocable inv = (Invocable)this.engine;
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this.engine.eval(new InputStreamReader(this.getResource("boot.js")));
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inv.invokeFunction("__scboot", this, engine);
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}
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}catch(Exception e){
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e.printStackTrace();
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this.getLogger().severe(e.getMessage());
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}finally{
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currentThread.setContextClassLoader(previousClassLoader);
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}
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}
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public List<String> onTabComplete(CommandSender sender, Command cmd,
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String alias,
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String[] args)
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{
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List<String> result = new ArrayList<String>();
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if (this.engine == null){
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this.getLogger().severe(NO_JAVASCRIPT_MESSAGE);
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return null;
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}
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try {
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Invocable inv = (Invocable)this.engine;
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inv.invokeFunction("__onTabComplete", result, sender, cmd, alias, args);
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}catch (Exception e){
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sender.sendMessage(e.getMessage());
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e.printStackTrace();
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}
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return result;
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}
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public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args)
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{
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boolean result = false;
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String javascriptCode = "";
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Object jsResult = null;
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if (this.engine == null){
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this.getLogger().severe(NO_JAVASCRIPT_MESSAGE);
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return false;
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}
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try {
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jsResult = ((Invocable)this.engine).invokeFunction("__onCommand", sender, cmd, label, args);
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}catch (Exception se){
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this.getLogger().severe(se.toString());
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se.printStackTrace();
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sender.sendMessage(se.getMessage());
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}
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if (jsResult != null){
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return ((Boolean)jsResult).booleanValue();
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}
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return result;
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}
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}
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