Make browser restore functionality work

app/src/main/java/io/xpipe/app/browser/BrowserModel.java

@@ -67,12 +67,32 @@ public class BrowserModel {
     private final BrowserTransferModel localTransfersStage = new BrowserTransferModel();
     private final ObservableList<BrowserEntry> selection = FXCollections.observableArrayList();
 
+    public void restoreState(BrowserSavedState state) {
+        state.getLastSystems().forEach((uuid, s) -> {
+            var storageEntry = DataStorage.get().getStoreEntry(uuid);
+            storageEntry.ifPresent(entry -> {
+                openFileSystemAsync(entry.getName(), entry.getStore().asNeeded(), s, new SimpleBooleanProperty());
+            });
+        });
+    }
+
     public void reset() {
         var map = new LinkedHashMap<UUID, String>();
         openFileSystems.forEach(model -> {
             var storageEntry = DataStorage.get().getStoreEntryIfPresent(model.getStore());
             storageEntry.ifPresent(entry -> map.put(entry.getUuid(), model.getCurrentPath().get()));
         });
+
+        // Don't override state if it is empty
+        if (map.size() == 0) {
+            return;
+        }
+
+        var meaningful = map.size() > 1 || map.values().stream().allMatch(s -> s != null);
+        if (!meaningful) {
+            return;
+        }
+
         var state = new BrowserSavedState(map);
         state.save();
     }

app/src/main/java/io/xpipe/app/browser/BrowserSavedState.java

@@ -17,8 +17,8 @@ import java.util.UUID;
 public class BrowserSavedState {
 
     static BrowserSavedState load() {
-        var state = AppCache.get("browser-state", BrowserSavedState.class, () -> {
+        BrowserSavedState state = AppCache.get("browser-state", BrowserSavedState.class, () -> {
-            return new BrowserSavedState();
+            return null;
         });
         return state;
     }

app/src/main/java/io/xpipe/app/browser/BrowserWelcomeComp.java

@@ -12,6 +12,8 @@ import javafx.scene.control.Label;
 import javafx.scene.layout.Region;
 import javafx.scene.layout.VBox;
 
+import java.util.concurrent.atomic.AtomicBoolean;
+
 public class BrowserWelcomeComp extends SimpleComp {
 
     private final BrowserModel model;
@@ -23,16 +25,16 @@ public class BrowserWelcomeComp extends SimpleComp {
     @Override
     protected Region createSimple() {
         var state = BrowserSavedState.load();
-        var showList = state.getLastSystems().size() > 1
-                || (state.getLastSystems().size() == 1
-                        && state.getLastSystems().values().stream().allMatch(s -> s != null));
 
         var welcome = new BrowserGreetingComp().createSimple();
 
         var vbox = new VBox(welcome);
         vbox.setPadding(new Insets(40, 40, 40, 50));
         vbox.setSpacing(18);
-        if (!showList) {
+        if (state == null) {
+            var header = new Label("Have fun with the file browser!");
+            AppFont.header(header);
+            vbox.getChildren().add(header);
             return vbox;
         }
 
@@ -65,6 +67,16 @@ public class BrowserWelcomeComp extends SimpleComp {
         vbox.getChildren().add(restoreLabel);
 
         var restoreButton = new Button("Restore sessions");
+        var done = new AtomicBoolean();
+        restoreButton.setOnAction(event -> {
+            if (done.get()) {
+                return;
+            }
+
+            done.set(true);
+            model.restoreState(state);
+            event.consume();
+        });
         vbox.getChildren().add(restoreButton);
 
         return vbox;

app/src/main/java/io/xpipe/app/prefs/UsageNotificationBehaviour.java

@@ -1,3 +0,0 @@
-package io.xpipe.app.prefs;
-
-public class UsageNotificationBehaviour {}