LET'S GET THIS FINAL REWRITE EVER STARTED

1 files changed, 59 insertions, 0 deletions

diff --git a/prev/dialog_unix.go b/prev/dialog_unix.go
new file mode 100644
index 0000000..c908910
--- /dev/null
+++ b/prev/dialog_unix.go
@@ -0,0 +1,59 @@
+// +build !windows,!darwin
+
+// 19 august 2014
+
+package ui
+
+import (
+	"unsafe"
+)
+
+// #include "gtk_unix.h"
+// extern void our_openfile_response_callback(GtkDialog *, gint, gpointer);
+// /* because cgo doesn't like ... */
+// static inline GtkWidget *newOpenFileDialog(GtkWindow *parent)
+// {
+// 	return gtk_file_chooser_dialog_new(NULL,	/* default title */
+// 		parent,
+// 		GTK_FILE_CHOOSER_ACTION_OPEN,
+// 		GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
+// 		GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
+// 		NULL);
+// }
+import "C"
+
+func (w *window) openFile(f func(filename string)) {
+	widget := C.newOpenFileDialog(w.window)
+	window := (*C.GtkWindow)(unsafe.Pointer(widget))
+	dialog := (*C.GtkDialog)(unsafe.Pointer(widget))
+	fc := (*C.GtkFileChooser)(unsafe.Pointer(widget))
+	// non-local filenames are relevant mainly to GIO where we can open *anything*, not to Go os.File; see https://twitter.com/braket/status/506142849654870016
+	C.gtk_file_chooser_set_local_only(fc, C.TRUE)
+	C.gtk_file_chooser_set_select_multiple(fc, C.FALSE)
+	C.gtk_file_chooser_set_show_hidden(fc, C.TRUE)
+	C.gtk_window_set_modal(window, C.TRUE)
+	g_signal_connect(
+		C.gpointer(unsafe.Pointer(dialog)),
+		"response",
+		C.GCallback(C.our_openfile_response_callback),
+		C.gpointer(unsafe.Pointer(&f)))
+	C.gtk_widget_show_all(widget)
+}
+
+//export our_openfile_response_callback
+func our_openfile_response_callback(dialog *C.GtkDialog, response C.gint, data C.gpointer) {
+	f := (*func(string))(unsafe.Pointer(data))
+	if response != C.GTK_RESPONSE_ACCEPT {
+		(*f)("")
+		C.gtk_widget_destroy((*C.GtkWidget)(unsafe.Pointer(dialog)))
+		return
+	}
+	filename := C.gtk_file_chooser_get_filename((*C.GtkFileChooser)(unsafe.Pointer(dialog)))
+	if filename == nil {
+		panic("chosen filename NULL in OpenFile()")
+	}
+	realfilename := fromgstr(filename)
+	C.g_free(C.gpointer(unsafe.Pointer(filename)))
+	C.gtk_widget_destroy((*C.GtkWidget)(unsafe.Pointer(dialog)))
+	(*f)(realfilename)
+}