[linux] support clipboard

v3/pkg/application/clipboard.go

@@ -16,9 +16,11 @@ func newClipboard() *Clipboard {
 }
 
 func (c *Clipboard) SetText(text string) bool {
-	return c.impl.setText(text)
+	return InvokeSyncWithResult(func() bool {
+		return c.impl.setText(text)
+	})
 }
 
 func (c *Clipboard) Text() (string, bool) {
-	return c.impl.text()
+	return InvokeSyncWithResultAndOther(c.impl.text)
 }

v3/pkg/application/clipboard_linux.go

@@ -2,8 +2,29 @@
 
 package application
 
+/*
+#cgo linux pkg-config: gtk+-3.0 webkit2gtk-4.0
+
+#include "gtk/gtk.h"
+#include "webkit2/webkit2.h"
+
+static gchar* getClipboardText() {
+	GtkClipboard *clip = gtk_clipboard_get(GDK_SELECTION_CLIPBOARD);
+	return gtk_clipboard_wait_for_text(clip);
+}
+
+static void setClipboardText(gchar* text) {
+	GtkClipboard *clip = gtk_clipboard_get(GDK_SELECTION_CLIPBOARD);
+	gtk_clipboard_set_text(clip, text, -1);
+
+	clip = gtk_clipboard_get(GDK_SELECTION_PRIMARY);
+	gtk_clipboard_set_text(clip, text, -1);
+}
+*/
+import "C"
 import (
 	"sync"
+	"unsafe"
 )
 
 var clipboardLock sync.RWMutex
@@ -13,19 +34,18 @@ type linuxClipboard struct{}
 func (m linuxClipboard) setText(text string) bool {
 	clipboardLock.Lock()
 	defer clipboardLock.Unlock()
-	// cText := C.CString(text)
+	cText := C.CString(text)
-	// success := C.setClipboardText(cText)
+	C.setClipboardText(cText)
-	// C.free(unsafe.Pointer(cText))
+	C.free(unsafe.Pointer(cText))
-	success := false
+	return true
-	return bool(success)
 }
 
 func (m linuxClipboard) text() (string, bool) {
 	clipboardLock.RLock()
 	defer clipboardLock.RUnlock()
-	//	clipboardText := C.getClipboardText()
+	clipboardText := C.getClipboardText()
-	//	result := C.GoString(clipboardText)
+	result := C.GoString(clipboardText)
-	return "", false
+	return result, true
 }
 
 func newClipboardImpl() *linuxClipboard {

v3/pkg/application/linux_cgo.go

@@ -119,7 +119,7 @@ static void* gtkFileChooserDialogNew(char* title, GtkWindow* window, GtkFileChoo
 		GTK_RESPONSE_CANCEL,
 		acceptLabel,
 		GTK_RESPONSE_ACCEPT,
-		0);
+		NULL);
 }
 
 typedef struct Screen {

v3/pkg/application/mainthread.go

@@ -67,6 +67,18 @@ func InvokeSyncWithResultAndError[T any](fn func() (T, error)) (res T, err error
 	return res, err
 }
 
+func InvokeSyncWithResultAndOther[T any, U any](fn func() (T, U)) (res T, other U) {
+	var wg sync.WaitGroup
+	wg.Add(1)
+	globalApplication.dispatchOnMainThread(func() {
+		defer processPanicHandlerRecover()
+		res, other = fn()
+		wg.Done()
+	})
+	wg.Wait()
+	return res, other
+}
+
 func InvokeAsync(fn func()) {
 	globalApplication.dispatchOnMainThread(func() {
 		defer processPanicHandlerRecover()