File Selector, support filepath dropping

This adds support for dropping a filepath on an open file-selector to set that path.

1 files changed, 27 insertions, 1 deletions

diff --git a/source/blender/editors/space_file/space_file.c b/source/blender/editors/space_file/space_file.c
index 97c2d75e469..3202164edbd 100644
--- a/source/blender/editors/space_file/space_file.c
+++ b/source/blender/editors/space_file/space_file.c
@@ -441,6 +441,7 @@ static void file_operatortypes(void)
 	WM_operatortype_append(FILE_OT_delete);
 	WM_operatortype_append(FILE_OT_rename);
 	WM_operatortype_append(FILE_OT_smoothscroll);
+	WM_operatortype_append(FILE_OT_filepath_drop);
 }
 
 /* NOTE: do not add .blend file reading on this level */
@@ -661,6 +662,30 @@ static void file_ui_area_listener(bScreen *UNUSED(sc), ScrArea *UNUSED(sa), AReg
 	}
 }
 
+static int filepath_drop_poll(bContext *C, wmDrag *drag, const wmEvent *UNUSED(event))
+{
+	if (drag->type == WM_DRAG_PATH) {
+		SpaceFile *sfile = CTX_wm_space_file(C);
+		if (sfile) {
+			return 1;
+		}
+	}
+	return 0;
+}
+
+static void filepath_drop_copy(wmDrag *drag, wmDropBox *drop)
+{
+	RNA_string_set(drop->ptr, "filepath", drag->path);
+}
+
+/* region dropbox definition */
+static void file_dropboxes(void)
+{
+	ListBase *lb = WM_dropboxmap_find("Window", SPACE_EMPTY, RGN_TYPE_WINDOW);
+
+	WM_dropbox_add(lb, "FILE_OT_filepath_drop", filepath_drop_poll, filepath_drop_copy);
+}
+
 /* only called once, from space/spacetypes.c */
 void ED_spacetype_file(void)
 {
@@ -679,7 +704,8 @@ void ED_spacetype_file(void)
 	st->listener = file_listener;
 	st->operatortypes = file_operatortypes;
 	st->keymap = file_keymap;
-	
+	st->dropboxes = file_dropboxes;
+
 	/* regions: main window */
 	art = MEM_callocN(sizeof(ARegionType), "spacetype file region");
 	art->regionid = RGN_TYPE_WINDOW;