avoid having dangling panel pointers in the interface, unregistering addons could leave the interface pointing to freed memory.

1 files changed, 25 insertions, 0 deletions

diff --git a/source/blender/editors/interface/interface_panel.c b/source/blender/editors/interface/interface_panel.c
index 9fbf2fe8898..bcd49551784 100644
--- a/source/blender/editors/interface/interface_panel.c
+++ b/source/blender/editors/interface/interface_panel.c
@@ -306,6 +306,31 @@ void uiEndPanel(uiBlock *block, int width, int height)
 	}
 }
 
+void uiPanelClearType(wmWindowManager *wm, const ARegionType *art, const PanelType *type)
+{
+	wmWindow *win;
+	for (win = wm->windows.first; win; win = win->next) {
+		ScrArea *sa;
+		for (sa = win->screen->areabase.first; sa; sa = sa->next) {
+			ARegion *ar;
+			for (ar = sa->regionbase.first; ar; ar = ar->next) {
+				if (ar->type == art) {
+					uiBlock *block, *nblock = ar->uiblocks.first;
+					while ((block = nblock)) {
+						nblock = block->next;
+						if (block->panel) {
+							if (block->panel->type == type) {
+								uiFreeBlock(block->evil_C, block);
+								BLI_remlink(&ar->uiblocks, block);
+							}
+						}
+					}
+				}
+			}
+		}
+	}
+}
+
 static void ui_offset_panel_block(uiBlock *block)
 {
 	uiStyle *style = UI_GetStyleDraw();