1 files changed, 15 insertions, 8 deletions

diff --git a/src/main/java/cuchaz/enigma/gui/GuiController.java b/src/main/java/cuchaz/enigma/gui/GuiController.java
index 45c6131..15211e0 100644
--- a/src/main/java/cuchaz/enigma/gui/GuiController.java
+++ b/src/main/java/cuchaz/enigma/gui/GuiController.java
@@ -32,6 +32,7 @@ import cuchaz.enigma.translation.representation.entry.MethodEntry;
 import cuchaz.enigma.utils.ReadableToken;
 
 import javax.annotation.Nullable;
+import javax.swing.*;
 import java.awt.event.ItemEvent;
 import java.io.File;
 import java.io.IOException;
@@ -80,16 +81,22 @@ public class GuiController {
                 this.gui.onCloseJar();
         }
 
-        public void openMappings(MappingFormat format, Path path) throws IOException, MappingParseException {
-                EntryTree<EntryMapping> mappings = format.read(path);
-                deobfuscator.setMappings(mappings);
+        public void openMappings(MappingFormat format, Path path) {
+                ProgressDialog.runInThread(this.gui.getFrame(), progress -> {
+                        try {
+                                EntryTree<EntryMapping> mappings = format.read(path, progress);
+                                deobfuscator.setMappings(mappings, progress);
 
-                gui.setMappingsFile(path);
-                loadedMappingFormat = format;
-                loadedMappingPath = path;
+                                gui.setMappingsFile(path);
+                                loadedMappingFormat = format;
+                                loadedMappingPath = path;
 
-                refreshClasses();
-                refreshCurrentClass();
+                                refreshClasses();
+                                refreshCurrentClass();
+                        } catch (MappingParseException e) {
+                                JOptionPane.showMessageDialog(this.gui.getFrame(), e.getMessage());
+                        }
+                });
         }
 
         public void saveMappings(Path path) {