From cc4f1d7251e24e74a1a8510129e234ff832a5d9a Mon Sep 17 00:00:00 2001
From: Bill Ferguson <wpferguson@gmail.com>
Date: Sat, 8 Aug 2020 23:11:33 -0400
Subject: [PATCH] Added check to ensure we are in lighttable view prior to
 callling darktable.register_lib.  If darktable was invoked in single image
 (darkroom) mode, then an event handler is registered to detect the change
 from darkroom mode to lighttable mode so that we can then call
 darktable.register_lib.

---
 official/image_path_in_ui.lua | 33 +++++++++++++++++++++++++++++----
 1 file changed, 29 insertions(+), 4 deletions(-)

diff --git a/official/image_path_in_ui.lua b/official/image_path_in_ui.lua
index 18e57ca..60bcce6 100644
--- a/official/image_path_in_ui.lua
+++ b/official/image_path_in_ui.lua
@@ -33,8 +33,22 @@ local du = require "lib/dtutils"
 
 du.check_min_api_version("2.0.0", "image_path_in_ui") 
 
+local ipiu = {}
+ipiu.module_installed = false
+ipiu.event_registered = false
+
 local main_label = dt.new_widget("label"){selectable = true, ellipsize = "middle", halign = "start"}
 
+local function install_module()
+  if not ipiu.module_installed then
+    dt.register_lib("image_path_no_ui","Selected Images path",true,false,{
+      [dt.gui.views.lighttable] = {"DT_UI_CONTAINER_PANEL_LEFT_CENTER",300}
+      }, main_label
+    )
+    ipiu.module_installed = true
+  end
+end
+
 local function reset_widget()
   local selection = dt.gui.selection()
   local result = ""
@@ -54,10 +68,21 @@ end
 
 main_label.reset_callback = reset_widget
 
-dt.register_lib("image_path_no_ui","Selected Images path",true,false,{
-    [dt.gui.views.lighttable] = {"DT_UI_CONTAINER_PANEL_LEFT_CENTER",300}
-    }, main_label
-  );
+if dt.gui.current_view().name == "lighttable" then
+  install_module()
+else
+  if not ipiu.event_registered then
+    dt.register_event(
+      "view-changed",
+      function(event, old_view, new_view)
+        if new_view.name == "lighttable" and old_view.name == "darkroom" then
+          install_module()
+         end
+      end
+    )
+    ipiu.event_registered = true
+  end
+end
 
 dt.register_event("mouse-over-image-changed",reset_widget);