implement null.Frontend

null.Frontend does nothing and is merely needed to pass to the devserver so
it has a frontend.Frontend to drive

v2/internal/frontend/desktop/null/browser.go

@@ -0,0 +1,5 @@
+package null
+
+// BrowserOpenURL does nothing
+func (f *Frontend) BrowserOpenURL(url string) {
+}

v2/internal/frontend/desktop/null/dialog.go

@@ -0,0 +1,28 @@
+package null
+
+import "github.com/wailsapp/wails/v2/internal/frontend"
+
+// OpenFileDialog does nothing
+func (f *Frontend) OpenFileDialog(dialogOptions frontend.OpenDialogOptions) (result string, err error) {
+	return "", nil
+}
+
+// OpenMultipleFilesDialog does nothing
+func (f *Frontend) OpenMultipleFilesDialog(dialogOptions frontend.OpenDialogOptions) ([]string, error) {
+	return []string{}, nil
+}
+
+// OpenDirectoryDialog does nothing
+func (f *Frontend) OpenDirectoryDialog(dialogOptions frontend.OpenDialogOptions) (string, error) {
+	return "", nil
+}
+
+// SaveFileDialog does nothing
+func (f *Frontend) SaveFileDialog(dialogOptions frontend.SaveDialogOptions) (string, error) {
+	return "", nil
+}
+
+// MessageDialog does nothing
+func (f *Frontend) MessageDialog(dialogOptions frontend.MessageDialogOptions) (string, error) {
+	return "", nil
+}

v2/internal/frontend/desktop/null/frontend.go

@@ -0,0 +1,202 @@
+package null
+
+import (
+	"context"
+	"time"
+
+	"github.com/wailsapp/wails/v2/internal/frontend"
+	"github.com/wailsapp/wails/v2/pkg/options"
+)
+
+// Frontend implements an empty Frontend that simply waits until the context is done.
+type Frontend struct {
+	// Context
+	ctx  context.Context
+	done bool
+}
+
+// NewFrontend returns an initialized Frontend
+func NewFrontend(ctx context.Context) *Frontend {
+	return &Frontend{
+		ctx: ctx,
+	}
+}
+
+// Show does nothing
+func (f *Frontend) Show() {
+
+}
+
+// Hide does nothing
+func (f *Frontend) Hide() {
+
+}
+
+// ScreenGetAll returns an empty slice
+func (f *Frontend) ScreenGetAll() ([]frontend.Screen, error) {
+	return []frontend.Screen{}, nil
+}
+
+// WindowSetBackgroundColour does nothing
+func (f *Frontend) WindowSetBackgroundColour(col *options.RGBA) {
+
+}
+
+// WindowReload does nothing
+func (f *Frontend) WindowReload() {
+
+}
+
+// WindowReloadApp does nothing
+func (f *Frontend) WindowReloadApp() {
+
+}
+
+// WindowSetAlwaysOnTop does nothing
+func (f *Frontend) WindowSetAlwaysOnTop(b bool) {
+
+}
+
+// WindowSetSystemDefaultTheme does nothing
+func (f *Frontend) WindowSetSystemDefaultTheme() {
+
+}
+
+// WindowSetLightTheme does nothing
+func (f *Frontend) WindowSetLightTheme() {
+
+}
+
+// WindowSetDarkTheme does nothing
+func (f *Frontend) WindowSetDarkTheme() {
+
+}
+
+// Run waits until the context is done and then exits
+func (f *Frontend) Run(ctx context.Context) error {
+	for {
+		select {
+		case <-ctx.Done():
+			break
+		default:
+			time.Sleep(1 * time.Millisecond)
+		}
+		if f.done {
+			break
+		}
+	}
+	return nil
+}
+
+// WindowCenter does nothing
+func (f *Frontend) WindowCenter() {
+
+}
+
+// WindowSetPosition does nothing
+func (f *Frontend) WindowSetPosition(x, y int) {
+
+}
+
+// WindowGetPosition does nothing
+func (f *Frontend) WindowGetPosition() (int, int) {
+	return 0, 0
+}
+
+// WindowSetSize does nothing
+func (f *Frontend) WindowSetSize(width, height int) {
+
+}
+
+// WindowGetSize does nothing
+func (f *Frontend) WindowGetSize() (int, int) {
+	return 0, 0
+}
+
+// WindowSetTitle does nothing
+func (f *Frontend) WindowSetTitle(title string) {
+
+}
+
+// WindowFullscreen does nothing
+func (f *Frontend) WindowFullscreen() {
+
+}
+
+// WindowUnfullscreen does nothing
+func (f *Frontend) WindowUnfullscreen() {
+
+}
+
+// WindowShow does nothing
+func (f *Frontend) WindowShow() {
+
+}
+
+// WindowHide does nothing
+func (f *Frontend) WindowHide() {
+
+}
+
+// WindowMaximize does nothing
+func (f *Frontend) WindowMaximise() {
+
+}
+
+// WindowToggleMaximise does nothing
+func (f *Frontend) WindowToggleMaximise() {
+
+}
+
+// WindowUnmaximise does nothing
+func (f *Frontend) WindowUnmaximise() {
+}
+
+// WindowMinimise does nothing
+func (f *Frontend) WindowMinimise() {
+
+}
+
+// WindowUnminimise does nothing
+func (f *Frontend) WindowUnminimise() {
+
+}
+
+// WindowSetMinSize does nothing
+func (f *Frontend) WindowSetMinSize(width int, height int) {
+
+}
+
+// WindowSetMaxSize does nothing
+func (f *Frontend) WindowSetMaxSize(width int, height int) {
+
+}
+
+// WindowSetRGBA does nothing
+func (f *Frontend) WindowSetRGBA(col *options.RGBA) {
+}
+
+// Quit does nothing
+func (f *Frontend) Quit() {
+	f.done = true
+}
+
+// Notify does nothing
+func (f *Frontend) Notify(name string, data ...interface{}) {
+
+}
+
+// Callback does nothing
+func (f *Frontend) Callback(message string) {
+
+}
+
+// startDrag does nothing
+func (f *Frontend) startDrag() {
+
+}
+
+// ExecJS does nothing
+func (f *Frontend) ExecJS(js string) {
+
+}

v2/internal/frontend/desktop/null/menu.go

@@ -0,0 +1,11 @@
+package null
+
+import "github.com/wailsapp/wails/v2/pkg/menu"
+
+//MenuSetApplicationMenu does nothing
+func (f *Frontend) MenuSetApplicationMenu(menu *menu.Menu) {
+}
+
+// MenuUpdateApplicationMenu does nothing
+func (f *Frontend) MenuUpdateApplicationMenu() {
+}