File dialogs for macos.

This commit is contained in:
Nuno Cruces 2019-12-11 10:29:31 +00:00
parent b477ca2786
commit 5dd85636fd
3 changed files with 196 additions and 0 deletions

138
dialog/dialog_darwin.go Normal file
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@ -0,0 +1,138 @@
package dialog
import (
"bytes"
"html/template"
"io"
"os/exec"
"strings"
)
func OpenFile(title, defaultPath string, filters []FileFilter) (string, error) {
cmd := exec.Command("osascript", "-l", "JavaScript")
cmd.Stdin = scriptExpand(scriptData{
Operation: "chooseFile",
Title: title,
DefaultPath: defaultPath,
Filter: toFilter(filters),
})
out, err := cmd.Output()
if err != nil {
return "", err
}
if len(out) > 0 {
out = out[:len(out)-1]
}
return string(out), nil
}
func OpenFiles(title, defaultPath string, filters []FileFilter) ([]string, error) {
cmd := exec.Command("osascript", "-l", "JavaScript")
cmd.Stdin = scriptExpand(scriptData{
Operation: "chooseFile",
Multiple: true,
Title: title,
DefaultPath: defaultPath,
Filter: toFilter(filters),
})
out, err := cmd.Output()
if err != nil {
return nil, err
}
if len(out) > 0 {
out = out[:len(out)-1]
}
return strings.Split(string(out), "\x00"), nil
}
func SaveFile(title, defaultPath string, filters []FileFilter) (string, error) {
cmd := exec.Command("osascript", "-l", "JavaScript")
cmd.Stdin = scriptExpand(scriptData{
Operation: "chooseFileName",
Title: title,
DefaultPath: defaultPath,
})
out, err := cmd.Output()
if err != nil {
return "", err
}
if len(out) > 0 {
out = out[:len(out)-1]
}
return string(out), nil
}
func PickFolder(title, defaultPath string) (string, error) {
cmd := exec.Command("osascript", "-l", "JavaScript")
cmd.Stdin = scriptExpand(scriptData{
Operation: "chooseFolder",
Title: title,
DefaultPath: defaultPath,
})
out, err := cmd.Output()
if err != nil {
return "", err
}
if len(out) > 0 {
out = out[:len(out)-1]
}
return string(out), nil
}
type FileFilter struct {
Name string
Exts []string
}
func toFilter(filters []FileFilter) []string {
var filter []string
for _, f := range filters {
for _, e := range f.Exts {
filter = append(filter, strings.TrimPrefix(e, "."))
}
}
return filter
}
type scriptData struct {
Operation string
Title string
DefaultPath string
Filter []string
Multiple bool
}
func scriptExpand(data scriptData) io.Reader {
var buf bytes.Buffer
err := script.Execute(&buf, data)
if err != nil {
panic(err)
}
var slice = buf.Bytes()
return bytes.NewReader(slice[len("<script>") : len(slice)-len("</script>")])
}
var script = template.Must(template.New("").Parse(`<script>
var app = Application.currentApplication();
app.includeStandardAdditions = true;
var opts = {};
opts.withPrompt = {{.Title}};
opts.multipleSelectionsAllowed = {{.Multiple}};
{{if .DefaultPath}}
opts.defaultLocation = {{.DefaultPath}};
{{end}}
{{if .Filter}}
opts.ofType = {{.Filter}};
{{end}}
var ret = app[{{.Operation}}](opts);
if (Array.isArray(ret)) {
ret.join('\0');
} else {
ret.toString();
}
</script>`))

55
dialog/dialog_test.go Normal file
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package dialog
import "testing"
func TestOpenFile(t *testing.T) {
ret, err := OpenFile("", "", []FileFilter{
{"Go files", []string{".go"}},
{"Web files", []string{".html", ".js", ".css"}},
{"Image files", []string{".png", ".ico"}},
})
if err != nil {
t.Error(err)
} else {
t.Logf("%#v", ret)
}
}
func TestOpenFiles(t *testing.T) {
ret, err := OpenFiles("", "", []FileFilter{
{"Go files", []string{".go"}},
{"Web files", []string{".html", ".js", ".css"}},
{"Image files", []string{".png", ".ico"}},
})
if err != nil {
t.Error(err)
} else {
t.Logf("%#v", ret)
}
}
func TestSaveFile(t *testing.T) {
ret, err := SaveFile("", "", []FileFilter{
{"Go files", []string{".go"}},
{"Web files", []string{".html", ".js", ".css"}},
{"Image files", []string{".png", ".ico"}},
})
if err != nil {
t.Error(err)
} else {
t.Logf("%#v", ret)
}
}
func TestPickFolder(t *testing.T) {
ret, err := PickFolder("", "")
if err != nil {
t.Error(err)
} else {
t.Logf("%#v", ret)
}
}

3
go.mod Normal file
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module github.com/ncruces/go-ui
go 1.13