Add GUI

cmd/cbconvert-gui/main_filedlg_portal.go

@@ -0,0 +1,105 @@
+//go:build portal
+
+package main
+
+import (
+	"net/url"
+
+	"github.com/godbus/dbus/v5"
+)
+
+func fileDlg(title string, multiple, directory bool) ([]string, error) {
+	ret := make([]string, 0)
+
+	conn, err := dbus.ConnectSessionBus()
+	if err != nil {
+		return ret, err
+	}
+	defer conn.Close()
+
+	dest := "org.freedesktop.portal.Desktop"
+	path := "/org/freedesktop/portal/desktop"
+	resp := "org.freedesktop.portal.Request.Response"
+
+	if err = conn.AddMatchSignal(
+		dbus.WithMatchInterface(dest),
+		dbus.WithMatchObjectPath(dbus.ObjectPath(path)),
+		dbus.WithMatchSender(conn.Names()[0]),
+	); err != nil {
+		return ret, err
+	}
+
+	c := make(chan *dbus.Signal, 10)
+	conn.Signal(c)
+
+	type Item struct {
+		Index  uint32
+		Filter string
+	}
+
+	type Filter struct {
+		Title   string
+		Filters []Item
+	}
+
+	filters := []Filter{
+		{
+			"Comic Files",
+			[]Item{
+				Item{0, "*.rar"},
+				Item{0, "*.zip"},
+				Item{0, "*.7z"},
+				Item{0, "*.tar"},
+				Item{0, "*.cbr"},
+				Item{0, "*.cbz"},
+				Item{0, "*.cb7"},
+				Item{0, "*.cbt"},
+				Item{0, "*.pdf"},
+				Item{0, "*.epub"},
+				Item{0, "*.mobi"},
+				Item{0, "*.xps"},
+			},
+		},
+	}
+
+	opts := map[string]any{
+		"multiple":  multiple,
+		"directory": directory,
+	}
+
+	if !directory {
+		opts["filters"] = filters
+	}
+
+	obj := conn.Object(dest, dbus.ObjectPath(path))
+	call := obj.Call("org.freedesktop.portal.FileChooser.OpenFile", 0, "", title, opts)
+	if call.Err != nil {
+		return ret, call.Err
+	}
+
+	for v := range c {
+		if v.Name != resp {
+			continue
+		}
+
+		status := v.Body[0].(uint32)
+
+		if status == 0 {
+			m := v.Body[1].(map[string]dbus.Variant)
+			uris := m["uris"].Value().([]string)
+
+			for _, uri := range uris {
+				u, err := url.ParseRequestURI(uri)
+				if err != nil {
+					return ret, err
+				}
+
+				ret = append(ret, u.Path)
+			}
+		}
+
+		break
+	}
+
+	return ret, nil
+}