macos: register known clipboard types for drag destination

gdk/macos/GdkMacosWindow.c

@@ -28,6 +28,7 @@
 #import "GdkMacosGLView.h"
 #import "GdkMacosWindow.h"
 
+#include "gdkmacosclipboard-private.h"
 #include "gdkmacosdisplay-private.h"
 #include "gdkmacosmonitor-private.h"
 #include "gdkmacossurface-private.h"
@@ -287,6 +288,9 @@ typedef NSString *CALayerContentsGravity;
   [self setContentView:view];
   [view release];
 
+  /* TODO: We might want to make this more extensible at some point */
+  _gdk_macos_clipboard_register_drag_types (self);
+
   return self;
 }
 

gdk/macos/gdkmacosclipboard-private.h

@@ -40,6 +40,7 @@ void              _gdk_macos_clipboard_check_externally_modified (GdkMacosClipbo
 NSPasteboardType  _gdk_macos_clipboard_to_ns_type                (const char        *mime_type,
                                                                   NSPasteboardType  *alternate);
 const char       *_gdk_macos_clipboard_from_ns_type              (NSPasteboardType   ns_type);
+void              _gdk_macos_clipboard_register_drag_types       (NSWindow          *window);
 
 @interface GdkMacosClipboardDataProvider : NSObject <NSPasteboardItemDataProvider>
 {

gdk/macos/gdkmacosclipboard.c

@@ -622,4 +622,17 @@ on_data_ready_cb (GObject      *object,
   write_request_free (wr);
 }
 
+void
+_gdk_macos_clipboard_register_drag_types (NSWindow *window)
+{
+  [window registerForDraggedTypes:[NSArray arrayWithObjects:PTYPE(STRING),
+                                                            PTYPE(PBOARD),
+                                                            PTYPE(URL),
+                                                            PTYPE(FILE_URL),
+                                                            PTYPE(COLOR),
+                                                            PTYPE(TIFF),
+                                                            PTYPE(PNG),
+                                                            nil]];
+}
+
 @end