File selection tweaks, options, API (windows).

cmd/zenity/main.go

@@ -37,6 +37,8 @@ var (
 	multiple         bool
 	directory        bool
 	confirmOverwrite bool
+	confirmCreate    bool
+	showHidden       bool
 	filename         string
 	separator        string
 	fileFilters      FileFilters
@@ -104,6 +106,8 @@ func setupFlags() {
 	flag.BoolVar(&multiple, "multiple", false, "Allow multiple files to be selected")
 	flag.BoolVar(&directory, "directory", false, "Activate directory-only selection")
 	flag.BoolVar(&confirmOverwrite, "confirm-overwrite", false, "Confirm file selection if filename already exists")
+	flag.BoolVar(&confirmCreate, "confirm-create", false, "Confirm file selection if filename does not yet exist (Windows only)")
+	flag.BoolVar(&showHidden, "show-hidden", false, "Show hidden files (Windows and macOS only)")
 	flag.StringVar(&filename, "filename", "", "Set the filename")
 	flag.StringVar(&separator, "separator", "|", "Set output separator character")
 	flag.Var(&fileFilters, "file-filter", "Set a filename filter (NAME | PATTERN1 PATTERN2 ...)")
@@ -158,24 +162,30 @@ func loadFlags() []zenity.Option {
 	options = append(options, zenity.CancelLabel(cancelLabel))
 	options = append(options, zenity.ExtraButton(extraButton))
 	if noWrap {
-		options = append(options, zenity.NoWrap)
+		options = append(options, zenity.NoWrap())
 	}
 	if ellipsize {
-		options = append(options, zenity.Ellipsize)
+		options = append(options, zenity.Ellipsize())
 	}
 	if defaultCancel {
-		options = append(options, zenity.DefaultCancel)
+		options = append(options, zenity.DefaultCancel())
 	}
 
 	// File selection options
 
-	options = append(options, fileFilters.New())
+	options = append(options, fileFilters.Build())
 	options = append(options, zenity.Filename(filename))
 	if directory {
-		options = append(options, zenity.Directory)
+		options = append(options, zenity.Directory())
 	}
 	if confirmOverwrite {
-		options = append(options, zenity.ConfirmOverwrite)
+		options = append(options, zenity.ConfirmOverwrite())
+	}
+	if confirmCreate {
+		options = append(options, zenity.ConfirmCreate())
+	}
+	if showHidden {
+		options = append(options, zenity.ShowHidden())
 	}
 
 	cmd.Separator = separator

file_test.go

@@ -12,7 +12,7 @@ func ExampleSelectFile() {
 			{"Go files", []string{"*.go"}},
 			{"Web files", []string{"*.html", "*.js", "*.css"}},
 			{"Image files", []string{"*.png", "*.gif", "*.ico", "*.jpg", "*.webp"}},
-		}.New())
+		}.Build())
 	// Output:
 }
 
@@ -23,32 +23,32 @@ func ExampleSelectFileMutiple() {
 			{"Go files", []string{"*.go"}},
 			{"Web files", []string{"*.html", "*.js", "*.css"}},
 			{"Image files", []string{"*.png", "*.gif", "*.ico", "*.jpg", "*.webp"}},
-		}.New())
+		}.Build())
 	// Output:
 }
 
 func ExampleSelectFileSave() {
 	zenity.SelectFileSave(
-		zenity.ConfirmOverwrite,
+		zenity.ConfirmOverwrite(),
 		zenity.Filename(defaultName),
 		zenity.FileFilters{
 			{"Go files", []string{"*.go"}},
 			{"Web files", []string{"*.html", "*.js", "*.css"}},
 			{"Image files", []string{"*.png", "*.gif", "*.ico", "*.jpg", "*.webp"}},
-		}.New())
+		}.Build())
 	// Output:
 }
 
 func ExampleSelectFile_directory() {
 	zenity.SelectFile(
 		zenity.Filename(defaultPath),
-		zenity.Directory)
+		zenity.Directory())
 	// Output:
 }
 
 func ExampleSelectFileMutiple_directory() {
 	zenity.SelectFileMutiple(
 		zenity.Filename(defaultPath),
-		zenity.Directory)
+		zenity.Directory())
 	// Output:
 }

file_unix.go

@@ -14,7 +14,7 @@ import (
 //
 // Returns an empty string on cancel.
 //
-// Valid options: Title, Directory, Filename, FileFilters.
+// Valid options: Title, Directory, Filename, ShowHidden, FileFilter(s).
 func SelectFile(options ...Option) (string, error) {
 	opts := optsParse(options)
 
@@ -47,7 +47,7 @@ func SelectFile(options ...Option) (string, error) {
 //
 // Returns a nil slice on cancel.
 //
-// Valid options: Title, Directory, Filename, FileFilters.
+// Valid options: Title, Directory, Filename, ShowHidden, FileFilter(s).
 func SelectFileMutiple(options ...Option) ([]string, error) {
 	opts := optsParse(options)
 
@@ -80,7 +80,7 @@ func SelectFileMutiple(options ...Option) ([]string, error) {
 //
 // Returns an empty string on cancel.
 //
-// Valid options: Title, Filename, ConfirmOverwrite, FileFilters.
+// Valid options: Title, Filename, ConfirmOverwrite, ConfirmCreate, ShowHidden, FileFilter(s).
 func SelectFileSave(options ...Option) (string, error) {
 	opts := optsParse(options)
 

file_windows.go

@@ -28,11 +28,14 @@ func SelectFile(options ...Option) (string, error) {
 
 	var args _OPENFILENAME
 	args.StructSize = uint32(unsafe.Sizeof(args))
-	args.Flags = 0x80008 // OFN_NOCHANGEDIR|OFN_EXPLORER
+	args.Flags = 0x81008 // OFN_NOCHANGEDIR|OFN_FILEMUSTEXIST|OFN_EXPLORER
 
 	if opts.title != "" {
 		args.Title = syscall.StringToUTF16Ptr(opts.title)
 	}
+	if opts.hidden {
+		args.Flags |= 0x10000000 // OFN_FORCESHOWHIDDEN
+	}
 	if opts.filters != nil {
 		args.Filter = &windowsFilters(opts.filters)[0]
 	}
@@ -40,7 +43,7 @@ func SelectFile(options ...Option) (string, error) {
 	res := [32768]uint16{}
 	args.File = &res[0]
 	args.MaxFile = uint32(len(res))
-	args.InitialDir = initDirAndName(opts.filename, res[:])
+	args.InitialDir, args.DefExt = initDirNameExt(opts.filename, res[:])
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
@@ -61,11 +64,14 @@ func SelectFileMutiple(options ...Option) ([]string, error) {
 
 	var args _OPENFILENAME
 	args.StructSize = uint32(unsafe.Sizeof(args))
-	args.Flags = 0x80208 // OFN_NOCHANGEDIR|OFN_ALLOWMULTISELECT|OFN_EXPLORER
+	args.Flags = 0x81208 // OFN_NOCHANGEDIR|OFN_ALLOWMULTISELECT|OFN_FILEMUSTEXIST|OFN_EXPLORER
 
 	if opts.title != "" {
 		args.Title = syscall.StringToUTF16Ptr(opts.title)
 	}
+	if opts.hidden {
+		args.Flags |= 0x10000000 // OFN_FORCESHOWHIDDEN
+	}
 	if opts.filters != nil {
 		args.Filter = &windowsFilters(opts.filters)[0]
 	}
@@ -73,7 +79,7 @@ func SelectFileMutiple(options ...Option) ([]string, error) {
 	res := [32768 + 1024*256]uint16{}
 	args.File = &res[0]
 	args.MaxFile = uint32(len(res))
-	args.InitialDir = initDirAndName(opts.filename, res[:])
+	args.InitialDir, args.DefExt = initDirNameExt(opts.filename, res[:])
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
@@ -112,10 +118,14 @@ func SelectFileMutiple(options ...Option) ([]string, error) {
 
 func SelectFileSave(options ...Option) (string, error) {
 	opts := optsParse(options)
+	if opts.directory {
+		res, _, err := pickFolders(opts, false)
+		return res, err
+	}
 
 	var args _OPENFILENAME
 	args.StructSize = uint32(unsafe.Sizeof(args))
-	args.Flags = 0x80008 // OFN_NOCHANGEDIR|OFN_EXPLORER
+	args.Flags = 0x88808 // OFN_NOCHANGEDIR|OFN_PATHMUSTEXIST|OFN_NOREADONLYRETURN|OFN_EXPLORER
 
 	if opts.title != "" {
 		args.Title = syscall.StringToUTF16Ptr(opts.title)
@@ -123,6 +133,12 @@ func SelectFileSave(options ...Option) (string, error) {
 	if opts.overwrite {
 		args.Flags |= 0x2 // OFN_OVERWRITEPROMPT
 	}
+	if opts.create {
+		args.Flags |= 0x2000 // OFN_CREATEPROMPT
+	}
+	if opts.hidden {
+		args.Flags |= 0x10000000 // OFN_FORCESHOWHIDDEN
+	}
 	if opts.filters != nil {
 		args.Filter = &windowsFilters(opts.filters)[0]
 	}
@@ -130,7 +146,7 @@ func SelectFileSave(options ...Option) (string, error) {
 	res := [32768]uint16{}
 	args.File = &res[0]
 	args.MaxFile = uint32(len(res))
-	args.InitialDir = initDirAndName(opts.filename, res[:])
+	args.InitialDir, args.DefExt = initDirNameExt(opts.filename, res[:])
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
@@ -171,6 +187,9 @@ func pickFolders(opts options, multi bool) (str string, lst []string, err error)
 	if multi {
 		flgs |= 0x200 // FOS_ALLOWMULTISELECT
 	}
+	if opts.hidden {
+		flgs |= 0x10000000 // FOS_FORCESHOWHIDDEN
+	}
 	hr, _, _ = dialog.Call(dialog.vtbl.SetOptions, uintptr(flgs|0x68)) // FOS_NOCHANGEDIR|FOS_PICKFOLDERS|FOS_FORCEFILESYSTEM
 	if int32(hr) < 0 {
 		return "", nil, syscall.Errno(hr)
@@ -239,11 +258,8 @@ func pickFolders(opts options, multi bool) (str string, lst []string, err error)
 		if int32(hr) < 0 {
 			return "", nil, syscall.Errno(hr)
 		}
-		for i := uintptr(0); i < uintptr(count); i++ {
+		for i := uintptr(0); i < uintptr(count) && err == nil; i++ {
 			err = shellItemPath(&items._COMObject, items.vtbl.GetItemAt, i)
-			if err != nil {
-				return
-			}
 		}
 	} else {
 		err = shellItemPath(&dialog._COMObject, dialog.vtbl.GetResult)
@@ -272,17 +288,21 @@ func browseForFolder(title string) (string, []string, error) {
 	return str, []string{str}, nil
 }
 
-func initDirAndName(filename string, name []uint16) (dir *uint16) {
+func initDirNameExt(filename string, name []uint16) (dir *uint16, ext *uint16) {
 	if filename != "" {
 		d, n := splitDirAndName(filename)
+		e := filepath.Ext(n)
 		if n != "" {
 			copy(name, syscall.StringToUTF16(n))
 		}
 		if d != "" {
-			return syscall.StringToUTF16Ptr(d)
+			dir = syscall.StringToUTF16Ptr(d)
+		}
+		if e != "" {
+			ext = syscall.StringToUTF16Ptr(e[1:])
 		}
 	}
-	return nil
+	return
 }
 
 func windowsFilters(filters []FileFilter) []uint16 {

internal/osa/generator.go

@@ -23,9 +23,10 @@ func main() {
 	var str strings.Builder
 
 	for _, file := range files {
-		if name := file.Name(); filepath.Ext(name) == ".gots" {
+		name := file.Name()
+
 		str.WriteString("\n" + `{{define "`)
-			str.WriteString(strings.TrimSuffix(name, ".gots"))
+		str.WriteString(strings.TrimSuffix(name, filepath.Ext(name)))
 		str.WriteString(`"}}<script>`)
 
 		func() {
@@ -50,7 +51,6 @@ func main() {
 
 		str.WriteString("</script>{{end}}")
 	}
-	}
 
 	out, err := os.Create("generated.go")
 	if err != nil {

zenity.go

@@ -20,6 +20,8 @@ type options struct {
 	filename  string
 	directory bool
 	overwrite bool
+	create    bool
+	hidden    bool
 	filters   []FileFilter
 
 	// Message options
@@ -32,7 +34,7 @@ type options struct {
 	defcancel bool
 }
 
-// Options are arguments you pass to dialog functions to customize their behavior.
+// Options are arguments passed to dialog functions to customize their behavior.
 type Option func(*options)
 
 func optsParse(options []Option) (res options) {
@@ -46,9 +48,7 @@ func optsParse(options []Option) (res options) {
 
 // Option to set the dialog title.
 func Title(title string) Option {
-	return func(o *options) {
+	return func(o *options) { o.title = title }
-		o.title = title
-	}
 }
 
 // File selection options
@@ -57,41 +57,51 @@ func Title(title string) Option {
 //
 // You can specify a file name, a directory path, or both.
 // Specifying a file name, makes it the default selected file.
-// Specifying a directory path, make it the default dialog location.
+// Specifying a directory path, makes it the default dialog location.
 func Filename(filename string) Option {
-	return func(o *options) {
+	return func(o *options) { o.filename = filename }
-		o.filename = filename
-	}
 }
 
 // Option to activate directory-only selection.
-func Directory(o *options) {
+func Directory() Option {
-	o.directory = true
+	return func(o *options) { o.directory = true }
 }
 
 // Option to confirm file selection if filename already exists.
-func ConfirmOverwrite(o *options) {
+func ConfirmOverwrite() Option {
-	o.overwrite = true
+	return func(o *options) { o.overwrite = true }
+}
+
+// Option to confirm file selection if filename does not yet exist (Windows only).
+func ConfirmCreate() Option {
+	return func(o *options) { o.create = true }
+}
+
+// Option to show hidden files (Windows and macOS only).
+func ShowHidden() Option {
+	return func(o *options) { o.hidden = true }
 }
 
 // FileFilter encapsulates a filename filter.
+//
+// macOS hides filename filters from the user,
+// and only supports filtering by extension (or "type").
 type FileFilter struct {
 	Name     string   // display string that describes the filter (optional)
 	Patterns []string // filter patterns for the display string
 }
 
+// Build option to set a filename filter.
+func (f FileFilter) Build() Option {
+	return func(o *options) { o.filters = append(o.filters, f) }
+}
+
 // FileFilters is a list of filename filters.
-//
-// macOS hides filename filters from the user,
-// and only supports filtering by extension (or "type").
-// We make an effort to convert any "*.EXT" like patterns.
 type FileFilters []FileFilter
 
-// Creates Option to set the filename filter list.
+// Build option to set filename filters.
-func (f FileFilters) New() Option {
+func (f FileFilters) Build() Option {
-	return func(o *options) {
+	return func(o *options) { o.filters = append(o.filters, f...) }
-		o.filters = f
-	}
 }
 
 // Message options
@@ -108,43 +118,35 @@ const (
 
 // Option to set the dialog icon.
 func Icon(icon MessageIcon) Option {
-	return func(o *options) {
+	return func(o *options) { o.icon = icon }
-		o.icon = icon
-	}
 }
 
 // Option to set the label of the OK button.
 func OKLabel(ok string) Option {
-	return func(o *options) {
+	return func(o *options) { o.ok = ok }
-		o.ok = ok
-	}
 }
 
 // Option to set the label of the Cancel button.
 func CancelLabel(cancel string) Option {
-	return func(o *options) {
+	return func(o *options) { o.cancel = cancel }
-		o.cancel = cancel
-	}
 }
 
 // Option to add an extra button.
 func ExtraButton(extra string) Option {
-	return func(o *options) {
+	return func(o *options) { o.extra = extra }
-		o.extra = extra
-	}
 }
 
 // Option to disable enable text wrapping.
-func NoWrap(o *options) {
+func NoWrap() Option {
-	o.nowrap = true
+	return func(o *options) { o.nowrap = true }
 }
 
 // Option to enable ellipsizing in the dialog text.
-func Ellipsize(o *options) {
+func Ellipsize() Option {
-	o.ellipsize = true
+	return func(o *options) { o.ellipsize = true }
 }
 
 // Option to give Cancel button focus by default.
-func DefaultCancel(o *options) {
+func DefaultCancel() Option {
-	o.defcancel = true
+	return func(o *options) { o.defcancel = true }
 }