Decouple the Clipboard API from fyne.Window

app.go

@@ -79,6 +79,11 @@ type App interface {
 	//
 	// Since: 2.3
 	SetCloudProvider(CloudProvider) // configure cloud for this app
+
+	// Clipboard returns the system clipboard.
+	//
+	// Since: 2.6
+	Clipboard() Clipboard
 }
 
 var app atomic.Pointer[App]

app/app.go

@@ -19,9 +19,10 @@ import (
 var _ fyne.App = (*fyneApp)(nil)
 
 type fyneApp struct {
-	driver   fyne.Driver
-	icon     fyne.Resource
-	uniqueID string
+	driver    fyne.Driver
+	clipboard fyne.Clipboard
+	icon      fyne.Resource
+	uniqueID  string
 
 	cloud     fyne.CloudProvider
 	lifecycle app.Lifecycle
@@ -109,6 +110,10 @@ func (a *fyneApp) newDefaultPreferences() *preferences {
 	return p
 }
 
+func (a *fyneApp) Clipboard() fyne.Clipboard {
+	return a.clipboard
+}
+
 // New returns a new application instance with the default driver and no unique ID (unless specified in FyneApp.toml)
 func New() fyne.App {
 	if meta.ID == "" {
@@ -137,8 +142,8 @@ func makeStoreDocs(id string, s *store) *internal.Docs {
 	}
 }
 
-func newAppWithDriver(d fyne.Driver, id string) fyne.App {
-	newApp := &fyneApp{uniqueID: id, driver: d}
+func newAppWithDriver(d fyne.Driver, clipboard fyne.Clipboard, id string) fyne.App {
+	newApp := &fyneApp{uniqueID: id, clipboard: clipboard, driver: d}
 	fyne.SetCurrentApp(newApp)
 
 	newApp.prefs = newApp.newDefaultPreferences()

app/app_gl.go

@@ -10,5 +10,5 @@ import (
 // NewWithID returns a new app instance using the appropriate runtime driver.
 // The ID string should be globally unique to this app.
 func NewWithID(id string) fyne.App {
-	return newAppWithDriver(glfw.NewGLDriver(), id)
+	return newAppWithDriver(glfw.NewGLDriver(), glfw.NewClipboard(), id)
 }

app/app_mobile.go

@@ -12,7 +12,7 @@ import (
 // The ID string should be globally unique to this app.
 func NewWithID(id string) fyne.App {
 	d := mobile.NewGoMobileDriver()
-	a := newAppWithDriver(d, id)
+	a := newAppWithDriver(d, mobile.NewClipboard(), id)
 	d.(mobile.ConfiguredDriver).SetOnConfigurationChanged(func(c *mobile.Configuration) {
 		internalapp.SystemTheme = c.SystemTheme
 

app/app_software.go

@@ -11,5 +11,5 @@ import (
 // NewWithID returns a new app instance using the test (headless) driver.
 // The ID string should be globally unique to this app.
 func NewWithID(id string) fyne.App {
-	return newAppWithDriver(test.NewDriverWithPainter(software.NewPainter()), id)
+	return newAppWithDriver(test.NewDriverWithPainter(software.NewPainter()), test.NewClipboard(), id)
 }

app/app_test.go

@@ -6,7 +6,7 @@ import (
 	"github.com/stretchr/testify/assert"
 
 	"fyne.io/fyne/v2"
-	_ "fyne.io/fyne/v2/test"
+	"fyne.io/fyne/v2/test"
 )
 
 func TestDummyApp(t *testing.T) {
@@ -48,3 +48,26 @@ func TestFyneApp_SetIcon(t *testing.T) {
 
 	assert.Equal(t, setIcon, app.Icon())
 }
+
+func TestFynaApp_Clipboard(t *testing.T) {
+	app := test.NewTempApp(t)
+	test.NewTempWindow(t, nil)
+
+	text := "My content from test window"
+	cb := app.Clipboard()
+
+	cliboardContent := cb.Content()
+	if cliboardContent != "" {
+		// Current environment has some content stored in clipboard,
+		// set temporary to an empty string to allow test and restore later.
+		cb.SetContent("")
+	}
+
+	assert.Empty(t, cb.Content())
+
+	cb.SetContent(text)
+	assert.Equal(t, text, cb.Content())
+
+	// Restore clipboardContent, if any
+	cb.SetContent(cliboardContent)
+}

app_test.go

@@ -68,6 +68,10 @@ func (dummyApp) Metadata() AppMetadata {
 	return AppMetadata{}
 }
 
+func (dummyApp) Clipboard() Clipboard {
+	return nil
+}
+
 func TestSetCurrentApp(t *testing.T) {
 	a := &dummyApp{}
 	SetCurrentApp(a)

cmd/fyne_demo/main.go

@@ -133,19 +133,19 @@ func makeMenu(a fyne.App, w fyne.Window) *fyne.MainMenu {
 		openSettings()
 	})
 
-	cutShortcut := &fyne.ShortcutCut{Clipboard: w.Clipboard()}
+	cutShortcut := &fyne.ShortcutCut{Clipboard: a.Clipboard()}
 	cutItem := fyne.NewMenuItem("Cut", func() {
-		shortcutFocused(cutShortcut, w)
+		shortcutFocused(cutShortcut, a.Clipboard(), w.Canvas().Focused())
 	})
 	cutItem.Shortcut = cutShortcut
-	copyShortcut := &fyne.ShortcutCopy{Clipboard: w.Clipboard()}
+	copyShortcut := &fyne.ShortcutCopy{Clipboard: a.Clipboard()}
 	copyItem := fyne.NewMenuItem("Copy", func() {
-		shortcutFocused(copyShortcut, w)
+		shortcutFocused(copyShortcut, a.Clipboard(), w.Canvas().Focused())
 	})
 	copyItem.Shortcut = copyShortcut
-	pasteShortcut := &fyne.ShortcutPaste{Clipboard: w.Clipboard()}
+	pasteShortcut := &fyne.ShortcutPaste{Clipboard: a.Clipboard()}
 	pasteItem := fyne.NewMenuItem("Paste", func() {
-		shortcutFocused(pasteShortcut, w)
+		shortcutFocused(pasteShortcut, a.Clipboard(), w.Canvas().Focused())
 	})
 	pasteItem.Shortcut = pasteShortcut
 	performFind := func() { fmt.Println("Menu Find") }
@@ -251,16 +251,16 @@ func makeNav(setTutorial func(tutorial tutorials.Tutorial), loadPrevious bool) f
 	return container.NewBorder(nil, themes, nil, nil, tree)
 }
 
-func shortcutFocused(s fyne.Shortcut, w fyne.Window) {
+func shortcutFocused(s fyne.Shortcut, cb fyne.Clipboard, f fyne.Focusable) {
 	switch sh := s.(type) {
 	case *fyne.ShortcutCopy:
-		sh.Clipboard = w.Clipboard()
+		sh.Clipboard = cb
 	case *fyne.ShortcutCut:
-		sh.Clipboard = w.Clipboard()
+		sh.Clipboard = cb
 	case *fyne.ShortcutPaste:
-		sh.Clipboard = w.Clipboard()
+		sh.Clipboard = cb
 	}
-	if focused, ok := w.Canvas().Focused().(fyne.Shortcutable); ok {
+	if focused, ok := f.(fyne.Shortcutable); ok {
 		focused.TypedShortcut(s)
 	}
 }

internal/driver/glfw/clipboard.go

@@ -12,13 +12,17 @@ import (
 )
 
 // Declare conformity with Clipboard interface
-var _ fyne.Clipboard = (*clipboard)(nil)
+var _ fyne.Clipboard = clipboard{}
+
+func NewClipboard() fyne.Clipboard {
+	return clipboard{}
+}
 
 // clipboard represents the system clipboard
 type clipboard struct{}
 
 // Content returns the clipboard content
-func (c *clipboard) Content() string {
+func (c clipboard) Content() string {
 	// This retry logic is to work around the "Access Denied" error often thrown in windows PR#1679
 	if runtime.GOOS != "windows" {
 		return c.content()
@@ -34,7 +38,7 @@ func (c *clipboard) Content() string {
 	return ""
 }
 
-func (c *clipboard) content() string {
+func (c clipboard) content() string {
 	content := ""
 	runOnMain(func() {
 		content = glfw.GetClipboardString()
@@ -43,7 +47,7 @@ func (c *clipboard) content() string {
 }
 
 // SetContent sets the clipboard content
-func (c *clipboard) SetContent(content string) {
+func (c clipboard) SetContent(content string) {
 	// This retry logic is to work around the "Access Denied" error often thrown in windows PR#1679
 	if runtime.GOOS != "windows" {
 		c.setContent(content)
@@ -59,7 +63,7 @@ func (c *clipboard) SetContent(content string) {
 	fyne.LogError("GLFW clipboard set failed", nil)
 }
 
-func (c *clipboard) setContent(content string) {
+func (c clipboard) setContent(content string) {
 	runOnMain(func() {
 		glfw.SetClipboardString(content)
 	})

internal/driver/glfw/clipboard_goxjs.go

@@ -8,15 +8,19 @@ import (
 )
 
 // Declare conformity with Clipboard interface
-var _ fyne.Clipboard = (*clipboard)(nil)
+var _ fyne.Clipboard = clipboard{}
+
+func NewClipboard() fyne.Clipboard {
+	return clipboard{}
+}
 
 // clipboard represents the system clipboard
 type clipboard struct {
 	window *glfw.Window
 }
 
 // Content returns the clipboard content
-func (c *clipboard) Content() string {
+func (c clipboard) Content() string {
 	content := ""
 	runOnMain(func() {
 		content, _ = c.window.GetClipboardString()
@@ -25,7 +29,7 @@ func (c *clipboard) Content() string {
 }
 
 // SetContent sets the clipboard content
-func (c *clipboard) SetContent(content string) {
+func (c clipboard) SetContent(content string) {
 	runOnMain(func() {
 		c.window.SetClipboardString(content)
 	})

internal/driver/glfw/window.go

@@ -237,7 +237,7 @@ func (w *window) ShowAndRun() {
 
 // Clipboard returns the system clipboard
 func (w *window) Clipboard() fyne.Clipboard {
-	return &clipboard{}
+	return NewClipboard()
 }
 
 func (w *window) Content() fyne.CanvasObject {
@@ -858,17 +858,17 @@ func (w *window) triggersShortcut(localizedKeyName fyne.KeyName, key fyne.KeyNam
 		case fyne.KeyV:
 			// detect paste shortcut
 			shortcut = &fyne.ShortcutPaste{
-				Clipboard: w.Clipboard(),
+				Clipboard: NewClipboard(),
 			}
 		case fyne.KeyC, fyne.KeyInsert:
 			// detect copy shortcut
 			shortcut = &fyne.ShortcutCopy{
-				Clipboard: w.Clipboard(),
+				Clipboard: NewClipboard(),
 			}
 		case fyne.KeyX:
 			// detect cut shortcut
 			shortcut = &fyne.ShortcutCut{
-				Clipboard: w.Clipboard(),
+				Clipboard: NewClipboard(),
 			}
 		case fyne.KeyA:
 			// detect selectAll shortcut
@@ -881,12 +881,12 @@ func (w *window) triggersShortcut(localizedKeyName fyne.KeyName, key fyne.KeyNam
 		case fyne.KeyInsert:
 			// detect paste shortcut
 			shortcut = &fyne.ShortcutPaste{
-				Clipboard: w.Clipboard(),
+				Clipboard: NewClipboard(),
 			}
 		case fyne.KeyDelete:
 			// detect cut shortcut
 			shortcut = &fyne.ShortcutCut{
-				Clipboard: w.Clipboard(),
+				Clipboard: NewClipboard(),
 			}
 		}
 	}

internal/driver/glfw/window_test.go

@@ -1621,28 +1621,6 @@ func TestWindow_ManualFocus(t *testing.T) {
 	assert.Equal(t, 1, content.unfocusedTimes)
 }
 
-func TestWindow_Clipboard(t *testing.T) {
-	w := createWindow("Test")
-
-	text := "My content from test window"
-	cb := w.Clipboard()
-
-	cliboardContent := cb.Content()
-	if cliboardContent != "" {
-		// Current environment has some content stored in clipboard,
-		// set temporary to an empty string to allow test and restore later.
-		cb.SetContent("")
-	}
-
-	assert.Empty(t, cb.Content())
-
-	cb.SetContent(text)
-	assert.Equal(t, text, cb.Content())
-
-	// Restore clipboardContent, if any
-	cb.SetContent(cliboardContent)
-}
-
 func TestWindow_ClipboardCopy_DisabledEntry(t *testing.T) {
 	w := createWindow("Test").(*window)
 	e := widget.NewEntry()
@@ -1662,7 +1640,7 @@ func TestWindow_ClipboardCopy_DisabledEntry(t *testing.T) {
 	w.keyPressed(nil, glfw.KeyC, 0, glfw.Repeat, ctrlMod)
 	w.WaitForEvents()
 
-	assert.Equal(t, "Testing", w.Clipboard().Content())
+	assert.Equal(t, "Testing", NewClipboard().Content())
 
 	e.SetText("Testing2")
 	e.DoubleTapped(nil)
@@ -1673,14 +1651,14 @@ func TestWindow_ClipboardCopy_DisabledEntry(t *testing.T) {
 	w.WaitForEvents()
 
 	assert.Equal(t, "Testing2", e.Text)
-	assert.Equal(t, "Testing", w.Clipboard().Content())
+	assert.Equal(t, "Testing", NewClipboard().Content())
 
 	// any other shortcut should be forbidden (Paste)
 	w.keyPressed(nil, glfw.KeyV, 0, glfw.Repeat, ctrlMod)
 	w.WaitForEvents()
 
 	assert.Equal(t, "Testing2", e.Text)
-	assert.Equal(t, "Testing", w.Clipboard().Content())
+	assert.Equal(t, "Testing", NewClipboard().Content())
 }
 
 func TestWindow_CloseInterception(t *testing.T) {

internal/driver/mobile/clipboard.go

@@ -5,7 +5,11 @@ import (
 )
 
 // Declare conformity with Clipboard interface
-var _ fyne.Clipboard = (*mobileClipboard)(nil)
+var _ fyne.Clipboard = mobileClipboard{}
+
+func NewClipboard() fyne.Clipboard {
+	return mobileClipboard{}
+}
 
 // mobileClipboard represents the system mobileClipboard
 type mobileClipboard struct {

internal/driver/mobile/clipboard_android.go

@@ -18,7 +18,7 @@ import (
 )
 
 // Content returns the clipboard content for Android
-func (c *mobileClipboard) Content() string {
+func (c mobileClipboard) Content() string {
 	content := ""
 	app.RunOnJVM(func(vm, env, ctx uintptr) error {
 		chars := C.getClipboardContent(C.uintptr_t(vm), C.uintptr_t(env), C.uintptr_t(ctx))
@@ -34,7 +34,7 @@ func (c *mobileClipboard) Content() string {
 }
 
 // SetContent sets the clipboard content for Android
-func (c *mobileClipboard) SetContent(content string) {
+func (c mobileClipboard) SetContent(content string) {
 	contentStr := C.CString(content)
 	defer C.free(unsafe.Pointer(contentStr))
 

internal/driver/mobile/clipboard_desktop.go

@@ -5,12 +5,12 @@ package mobile
 import "fyne.io/fyne/v2"
 
 // Content returns the clipboard content for mobile simulator runs
-func (c *mobileClipboard) Content() string {
+func (c mobileClipboard) Content() string {
 	fyne.LogError("Clipboard is not supported in mobile simulation", nil)
 	return ""
 }
 
 // SetContent sets the clipboard content for mobile simulator runs
-func (c *mobileClipboard) SetContent(content string) {
+func (c mobileClipboard) SetContent(content string) {
 	fyne.LogError("Clipboard is not supported in mobile simulation", nil)
 }