Create a copy schem for automatic clipboard saving

Signed-off-by: Lixfel <agga-games@gmx.de>

SchematicSystem_Main/src/de/steamwar/schematicsystem/ClipboardListener.java

@@ -0,0 +1,48 @@
+package de.steamwar.schematicsystem;
+
+import de.steamwar.sql.NoClipboardException;
+import de.steamwar.sql.Schematic;
+import de.steamwar.sql.SchematicType;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerJoinEvent;
+import org.bukkit.event.player.PlayerQuitEvent;
+
+import java.io.IOException;
+import java.util.UUID;
+
+public class ClipboardListener implements Listener {
+
+    private static final String CLIPBOARD_SCHEMNAME = "//copy";
+
+    @EventHandler
+    public void onLogin(PlayerJoinEvent e){
+        Schematic schematic = Schematic.getSchemFromDB(CLIPBOARD_SCHEMNAME, e.getPlayer().getUniqueId());
+        if(schematic != null){
+            try {
+                schematic.loadToPlayer(e.getPlayer());
+            } catch (IOException | NoClipboardException ex) {
+                //ignore
+            }
+        }
+    }
+
+    @EventHandler
+    public void onLogout(PlayerQuitEvent e){
+        UUID playerUUID = e.getPlayer().getUniqueId();
+        Schematic schematic = Schematic.getSchemFromDB(CLIPBOARD_SCHEMNAME, playerUUID);
+        boolean newSchem = false;
+        if(schematic == null){
+            Schematic.createSchem(CLIPBOARD_SCHEMNAME, playerUUID, "", SchematicType.Normal);
+            schematic = Schematic.getSchemFromDB(CLIPBOARD_SCHEMNAME, playerUUID);
+            newSchem = true;
+        }
+
+        try{
+            schematic.saveFromPlayer(e.getPlayer());
+        } catch (IOException | NoClipboardException ex) {
+            if(newSchem)
+                schematic.remove();
+        }
+    }
+}

SchematicSystem_Main/src/de/steamwar/schematicsystem/SchematicSystem.java

@@ -29,5 +29,7 @@ public class SchematicSystem extends JavaPlugin {
         CommandRemover.removeAll("/schematic", "/schem", "//schematic", "//schem");
 
         getCommand("schem").setExecutor(new SchematicCommand());
+
+        Bukkit.getPluginManager().registerEvents(new ClipboardListener(), this);
     }
 }