4.5

3 files changed, 16 insertions, 10 deletions

diff --git a/lib/folder_history_box.cpp b/lib/folder_history_box.cpp
index b395cbf4..c8bd042a 100644
--- a/lib/folder_history_box.cpp
+++ b/lib/folder_history_box.cpp
@@ -60,8 +60,8 @@ void FolderHistoryBox::OnHideDropDown(wxCommandEvent& event)
 }
 #endif
 
-
-void FolderHistoryBox::update(const wxString& dirname)
+//set value and update list are technically entangled: see potential bug description below
+void FolderHistoryBox::setValueAndUpdateList(const wxString& dirname)
 {
     //it may be a little lame to update the list on each mouse-button click, but it should be working and we dont't have to manipulate wxComboBox internals
 
@@ -69,8 +69,7 @@ void FolderHistoryBox::update(const wxString& dirname)
 
     //add some aliases to allow user changing to volume name and back, if possible
 #ifdef FFS_WIN
-    const Zstring activePath = toZ(GetValue());
-    std::vector<Zstring> aliases = getDirectoryAliases(activePath);
+    std::vector<Zstring> aliases = getDirectoryAliases(toZ(dirname));
     dirList.insert(dirList.end(), aliases.begin(), aliases.end());
 #endif
 
diff --git a/lib/folder_history_box.h b/lib/folder_history_box.h
index 28b85c90..859234cc 100644
--- a/lib/folder_history_box.h
+++ b/lib/folder_history_box.h
@@ -80,7 +80,7 @@ public:
 
     void setValue(const wxString& dirname)
     {
-        update(dirname); //required for setting value correctly + Linux to ensure the dropdown is shown as being populated
+        setValueAndUpdateList(dirname); //required for setting value correctly + Linux to ensure the dropdown is shown as being populated
     }
 
     // GetValue
@@ -88,9 +88,9 @@ public:
 private:
     void OnKeyEvent(wxKeyEvent& event);
     void OnSelection(wxCommandEvent& event);
-    void OnUpdateList(wxEvent& event) { update(GetValue()); event.Skip(); }
+    void OnUpdateList(wxEvent& event) { setValueAndUpdateList(GetValue()); event.Skip(); }
 
-    void update(const wxString& dirname);
+    void setValueAndUpdateList(const wxString& dirname);
 
 #if wxCHECK_VERSION(2, 9, 1)
     void OnShowDropDown(wxCommandEvent& event);
diff --git a/lib/resolve_path.cpp b/lib/resolve_path.cpp
index feeb98e3..df65b98b 100644
--- a/lib/resolve_path.cpp
+++ b/lib/resolve_path.cpp
@@ -5,6 +5,7 @@
 #include <map>
 #include <set>
 #include <zen/scope_guard.h>
+#include <zen/thread.h>
 
 #ifdef FFS_WIN
 #include <zen/dll.h>
@@ -354,6 +355,7 @@ Zstring volumenNameToPath(const Zstring& volumeName) //return empty string on er
 
 
 #ifdef FFS_WIN
+//attention: this call may seriously block if network volume is not available!!!
 Zstring volumePathToName(const Zstring& volumePath) //return empty string on error
 {
     const DWORD bufferSize = MAX_PATH + 1;
@@ -440,9 +442,14 @@ void getDirectoryAliasesRecursive(const Zstring& dirname, std::set<Zstring, Less
         dirname[1] == L':' &&
         dirname[2] == L'\\')
     {
-        Zstring volname = volumePathToName(Zstring(dirname.c_str(), 3));
-        if (!volname.empty())
-            output.insert(L"[" + volname + L"]" + Zstring(dirname.c_str() + 2));
+        //attention: "volumePathToName()" will seriously block if network volume is not available!!!
+        boost::unique_future<Zstring> futVolName = zen::async([=] { return volumePathToName(Zstring(dirname.c_str(), 3)); });
+        if (futVolName.timed_wait(boost::posix_time::seconds(1)))
+        {
+            Zstring volname = futVolName.get();
+            if (!volname.empty())
+                output.insert(L"[" + volname + L"]" + Zstring(dirname.c_str() + 2));
+        }
     }
 
     //2. replace volume name by volume path: [SYSTEM]\dirname -> c:\dirname