Description
When using SaveFileDialog.SetFilename() on Linux, the filename is not pre-populated in the GTK file chooser dialog. The same code works correctly on Windows and macOS.
To Reproduce
- Create a save file dialog with a default filename:
result, err := application.SaveFileDialog().
SetFilename("example.txt").
PromptForSingleSelection()
2. Run on Linux
3. Observe that the filename field in the dialog is empty
### Expected behaviour
The filename field should be pre-populated with "example.txt".
### Screenshots
_No response_
### Attempted Fixes
Extra arguments can be passed to runChooserDialog to correct this behaviour.
### System Details
```shell
Wails (v3.0.0-dev) Wails Doctor
# System
┌────────────────────────────────────────────────────────────────────────────────────────┐
| Name | Arch Linux |
| Version | Unknown |
| ID | arch |
| Branding | |
| Platform | linux |
| Architecture | amd64 |
| CPU | Intel(R) Core(TM) i9-8950HK CPU @ 2.90GHz |
| GPU 1 | GP107GLM [Quadro P2000 Mobile] (NVIDIA Corporation) - Driver: nouveau |
| GPU 2 | CoffeeLake-H GT2 [UHD Graphics 630] (Intel Corporation) - Driver: i915 |
| Memory | 31GB |
└────────────────────────────────────────────────────────────────────────────────────────┘
# Build Environment
┌─────────────────────────────────────────────────────────────────────────────────────────────────────┐
| Wails CLI | v3.0.0-dev |
| Go Version | go1.25.3 X:nodwarf5 |
| Revision | be60783f3a7f81366f4a60348c530dbf5d8d40b2 |
| Modified | false |
| -buildmode | exe |
| -compiler | gc |
| CGO_CFLAGS | |
| CGO_CPPFLAGS | |
| CGO_CXXFLAGS | |
| CGO_ENABLED | 1 |
| CGO_LDFLAGS | |
| DefaultGODEBUG | containermaxprocs=0,decoratemappings=0,tlssha1=1,updatemaxprocs=0,x509sha256skid=0 |
| GOAMD64 | v1 |
| GOARCH | amd64 |
| GOEXPERIMENT | nodwarf5 |
| GOOS | linux |
| vcs | git |
| vcs.modified | false |
| vcs.revision | be60783f3a7f81366f4a60348c530dbf5d8d40b2 |
| vcs.time | 2025-09-08T08:42:14Z |
└─────────────────────────────────────────────────────────────────────────────────────────────────────┘
# Dependencies
┌──────────────────────────────────────────┐
| gcc | 15.2.1+r301+gf24307422d1d-1 |
| gtk3 | 1:3.24.51-1 |
| npm | 11.6.4 |
| pkg-config | 2.5.1-1 |
| webkit2gtk | 2.50.4-1 |
| |
└──────── * - Optional Dependency ─────────┘
# Checking for issues
SUCCESS No issues found
# Diagnosis
SUCCESS Your system is ready for Wails development!
Need documentation? Run: wails3 docs
♥ If Wails is useful to you or your company, please consider sponsoring the project: wails3 sponsorAdditional context
In v3/pkg/application/linux_cgo.go and linux_purego.go, the runChooserDialog function never receives or uses the filename parameter. The runSaveFileDialog function has access to dialog.filename but doesn't pass it to runChooserDialog, and gtk_file_chooser_set_current_name() is never called.
Description
When using
SaveFileDialog.SetFilename()on Linux, the filename is not pre-populated in the GTK file chooser dialog. The same code works correctly on Windows and macOS.To Reproduce
Additional context
In v3/pkg/application/linux_cgo.go and linux_purego.go, the runChooserDialog function never receives or uses the filename parameter. The runSaveFileDialog function has access to dialog.filename but doesn't pass it to runChooserDialog, and gtk_file_chooser_set_current_name() is never called.