fix: Report a message while calculating total size of files to transfer. (#362)

* fix: Report a message while calculating total size of files to transfer.

Currently, in case of huge transfers the app may look frozen while calculating the transfer size. We should at least report to the user we are actually doing something.

closes #361

* ci: windows runner

.github/workflows/windows.yml

@@ -15,7 +15,7 @@ env:
 
 jobs:
   build:
-    runs-on: windows-2019
+    runs-on: windows-latest
 
     steps:
       - uses: actions/checkout@v2

CHANGELOG.md

@@ -49,6 +49,7 @@ Released on 20/09/2025
 - [Issue 356](https://github.com/veeso/termscp/issues/356): Fixed SSH auth issue not trying with the password if any RSA key was found.
 - [Issue 334](https://github.com/veeso/termscp/issues/334): SMB support for MacOS with vendored build of libsmbclient.
 - [Issue 337](https://github.com/veeso/termscp/issues/337): Migrated to libssh.org on Linux and MacOS for better ssh agent support.
+- [Issue 361](https://github.com/veeso/termscp/issues/361): Report a message while calculating total size of files to transfer.
 
 ## 0.18.0
 

src/ui/activities/filetransfer/session.rs

@@ -1260,7 +1260,10 @@ impl FileTransferActivity {
 
     /// Get total size of transfer for host_bridgehost
     fn get_total_transfer_size_host(&mut self, entry: &File) -> usize {
-        if entry.is_dir() {
+        // mount message to tell we are calculating size
+        self.mount_blocking_wait("Calculating transfer size…");
+
+        let sz = if entry.is_dir() {
             // List dir
             match self.host_bridge.list_dir(entry.path()) {
                 Ok(files) => files
@@ -1281,12 +1284,18 @@ impl FileTransferActivity {
             }
         } else {
             entry.metadata.size as usize
-        }
+        };
+        self.umount_wait();
+
+        sz
     }
 
     /// Get total size of transfer for remote host
     fn get_total_transfer_size_remote(&mut self, entry: &File) -> usize {
-        if entry.is_dir() {
+        // mount message to tell we are calculating size
+        self.mount_blocking_wait("Calculating transfer size…");
+
+        let sz = if entry.is_dir() {
             // List directory
             match self.client.list_dir(entry.path()) {
                 Ok(files) => files
@@ -1307,7 +1316,11 @@ impl FileTransferActivity {
             }
         } else {
             entry.metadata.size as usize
-        }
+        };
+
+        self.umount_wait();
+
+        sz
     }
 
     // file changed