Support SaveFile dialog

v3/internal/runtime/desktop/dialogs.js

@@ -78,3 +78,8 @@ export function Question(options) {
 export function OpenFile(options) {
     return dialog("OpenFile", options);
 }
+
+export function SaveFile(options) {
+    return dialog("SaveFile", options);
+}
+

v3/internal/runtime/desktop/main.js

@@ -15,7 +15,7 @@ import {EventsNotify, eventListeners} from "./events";
 import {SetBindings} from "./bindings";
 
 
-import {Info, Warning, Error, Question, OpenFile, dialogCallback, dialogErrorCallback, } from "./dialogs";
+import {Info, Warning, Error, Question, OpenFile, SaveFile, dialogCallback, dialogErrorCallback, } from "./dialogs";
 
 import * as Clipboard from './clipboard';
 import {newWindow} from "./window";
@@ -50,6 +50,7 @@ export function newRuntime(id) {
             Error,
             Question,
             OpenFile,
+            SaveFile,
         },
         Window: newWindow(id),
         Application: {

v3/internal/runtime/runtime_production_desktop_darwin.js

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v3/internal/runtime/runtime_production_desktop_linux.js

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v3/internal/runtime/runtime_production_desktop_windows.js

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v3/pkg/application/application.go

@@ -395,3 +395,9 @@ func (a *App) OpenFileDialogWithOptions(options *OpenFileDialogOptions) *OpenFil
 	result.SetOptions(options)
 	return result
 }
+
+func (a *App) SaveFileDialogWithOptions(s *SaveFileDialogOptions) *SaveFileDialog {
+	result := a.SaveFileDialog()
+	result.SetOptions(s)
+	return result
+}

v3/pkg/application/dialogs.go

@@ -331,6 +331,19 @@ func newSaveFileDialog() *SaveFileDialog {
 	}
 }
 
+type SaveFileDialogOptions struct {
+	CanCreateDirectories            bool
+	ShowHiddenFiles                 bool
+	CanSelectHiddenExtension        bool
+	AllowOtherFileTypes             bool
+	HideExtension                   bool
+	TreatsFilePackagesAsDirectories bool
+	Message                         string
+	Directory                       string
+	Filename                        string
+	ButtonText                      string
+}
+
 type SaveFileDialog struct {
 	id                              uint
 	canCreateDirectories            bool
@@ -353,6 +366,19 @@ type saveFileDialogImpl interface {
 	show() (string, error)
 }
 
+func (d *SaveFileDialog) SetOptions(options *SaveFileDialogOptions) {
+	d.canCreateDirectories = options.CanCreateDirectories
+	d.showHiddenFiles = options.ShowHiddenFiles
+	d.canSelectHiddenExtension = options.CanSelectHiddenExtension
+	d.allowOtherFileTypes = options.AllowOtherFileTypes
+	d.hideExtension = options.HideExtension
+	d.treatsFilePackagesAsDirectories = options.TreatsFilePackagesAsDirectories
+	d.message = options.Message
+	d.directory = options.Directory
+	d.filename = options.Filename
+	d.buttonText = options.ButtonText
+}
+
 func (d *SaveFileDialog) CanCreateDirectories(canCreateDirectories bool) *SaveFileDialog {
 	d.canCreateDirectories = canCreateDirectories
 	return d

v3/pkg/application/messageprocessor_dialog.go

@@ -102,6 +102,25 @@ func (m *MessageProcessor) processDialogMethod(method string, rw http.ResponseWr
 			}
 		}()
 		m.ok(rw)
+	case "SaveFile":
+		var options SaveFileDialogOptions
+		err := params.ToStruct(&options)
+		if err != nil {
+			m.httpError(rw, "Error parsing dialog options: %s", err.Error())
+			return
+		}
+		dialog := globalApplication.SaveFileDialogWithOptions(&options)
+
+		go func() {
+			file, err := dialog.PromptForSingleSelection()
+			if err != nil {
+				m.dialogErrorCallback("Error getting selection: %s", dialogID, err)
+				return
+			}
+			m.dialogCallback(dialogID, file, false)
+		}()
+		m.ok(rw)
+
 	default:
 		m.httpError(rw, "Unknown dialog method: %s", method)
 	}