Fix int field paste breaking it

app/src/main/java/io/xpipe/app/core/AppChecks.java

@@ -1,9 +1,12 @@
 package io.xpipe.app.core;
 
 import io.xpipe.app.issue.ErrorEvent;
+import io.xpipe.core.process.OsType;
 
 import java.io.IOException;
 import java.nio.file.Files;
+import java.nio.file.InvalidPathException;
+import java.nio.file.Path;
 
 public class AppChecks {
 
@@ -26,4 +29,26 @@ public class AppChecks {
                     .handle();
         }
     }
+
+    private static void checkTemp(String tmpdir) {
+        Path dir = null;
+        try {
+            dir = Path.of(tmpdir);
+        } catch (InvalidPathException ignored) {
+        }
+
+        if (dir == null || !Files.exists(dir) || !Files.isDirectory(dir) || !Files.isWritable(dir)) {
+            ErrorEvent.fromThrowable(
+                            new IOException("Specified temporary directory " + tmpdir + ", set via the environment variable %TEMP% is invalid."))
+                    .term()
+                    .handle();
+        }
+    }
+
+    public static void checkTemp() {
+        if (OsType.getLocal().equals(OsType.WINDOWS)) {
+            checkTemp(System.getProperty("java.io.tmpdir"));
+            checkTemp(System.getenv("TEMP"));
+        }
+    }
 }

app/src/main/java/io/xpipe/app/core/mode/OperationMode.java

@@ -89,6 +89,7 @@ public abstract class OperationMode {
             AppState.init();
             XPipeSession.init(AppProperties.get().getBuildUuid());
             AppChecks.checkDirectoryPermissions();
+            AppChecks.checkTemp();
             AppLogs.init();
             AppProperties.logArguments(args);
             AppProperties.logSystemProperties();

app/src/main/java/io/xpipe/app/fxcomps/impl/IntFieldComp.java

@@ -67,7 +67,7 @@ public class IntFieldComp extends Comp<CompStructure<TextField>> {
         });
 
         text.textProperty().addListener((observableValue, oldValue, newValue) -> {
-            if (newValue == null || "".equals(newValue) || (minValue < 0 && "-".equals(newValue))) {
+            if (newValue == null || newValue.isEmpty() || (minValue < 0 && "-".equals(newValue)) || !newValue.matches("-?\\d+")) {
                 value.setValue(null);
                 return;
             }