From a7ec09aef91d41a8a1fa5ca531cae5bbbbcde161 Mon Sep 17 00:00:00 2001
From: Campbell Barton <ideasman42@gmail.com>
Date: Sat, 25 Aug 2012 14:07:51 +0000
Subject: ability to register your own online manual callbacks - useful for 3rd
 party addon developers, who may want to link to their own URL's.

---
 release/scripts/modules/bpy/utils.py | 39 +++++++++++++++++++++++++++++++++++-
 1 file changed, 38 insertions(+), 1 deletion(-)

(limited to 'release/scripts/modules/bpy')

diff --git a/release/scripts/modules/bpy/utils.py b/release/scripts/modules/bpy/utils.py
index 09deb33c174..ef2c151dad2 100644
--- a/release/scripts/modules/bpy/utils.py
+++ b/release/scripts/modules/bpy/utils.py
@@ -33,6 +33,7 @@ __all__ = (
     "refresh_script_paths",
     "register_class",
     "register_module",
+    "register_manual_map",
     "resource_path",
     "script_path_user",
     "script_path_pref",
@@ -56,7 +57,6 @@ import addon_utils as _addon_utils
 
 _script_module_dirs = "startup", "modules"
 
-
 def _test_import(module_name, loaded_modules):
     use_time = _bpy.app.debug_python
 
@@ -595,3 +595,40 @@ def unregister_module(module, verbose=False):
             traceback.print_exc()
     if verbose:
         print("done.\n")
+
+
+# -----------------------------------------------------------------------------
+# Manual lookups, each function has to return a basepath and a sequence
+# of...
+
+# we start with the built-in default mapping
+def _blender_default_map():
+    import sys
+    import rna_wiki_reference as ref_mod
+    ret = (ref_mod.url_manual_prefix, ref_mod.url_manual_mapping)
+    # avoid storing in memory
+    del sys.modules["rna_wiki_reference"]
+    return ret
+
+# hooks for doc lookups
+_manual_map = [_blender_default_map]
+
+def register_manual_map(manual_hook):
+    _manual_map.append(manual_hook)
+
+def unregister_manual_map(manual_hook):
+    _manual_map.remove(manual_hook)
+
+def manual_map():
+    # reverse so default is called last
+    for cb in reversed(_manual_map):
+        try:
+            prefix, url_manual_mapping = cb()
+        except:
+            print("Error calling %r" % cb)
+            import traceback
+            traceback.print_exc()
+            continue
+
+        yield prefix, url_manual_mapping
+
-- 
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