1 files changed, 51 insertions, 0 deletions
diff --git a/powerline/segments/vim/plugin/tagbar.py b/powerline/segments/vim/plugin/tagbar.py
new file mode 100644
index 0000000..e683758
--- /dev/null
+++ b/powerline/segments/vim/plugin/tagbar.py
@@ -0,0 +1,51 @@
+# vim:fileencoding=utf-8:noet
+from __future__ import (unicode_literals, division, absolute_import, print_function)
+
+try:
+	import vim
+except ImportError:
+	vim = object()
+
+from powerline.bindings.vim import vim_command_exists, vim_get_autoload_func
+from powerline.theme import requires_segment_info
+
+
+currenttag = None
+tag_cache = {}
+
+
+@requires_segment_info
+def current_tag(segment_info, pl, flags='s'):
+	'''Return tag that is near the cursor.
+
+	:param str flags:
+		Specifies additional properties of the displayed tag. Supported values:
+
+		* s - display complete signature
+		* f - display the full hierarchy of the tag
+		* p - display the raw prototype
+
+		More info in the `official documentation`_ (search for 
+		“tagbar#currenttag”).
+
+		.. _`official documentation`: https://github.com/majutsushi/tagbar/blob/master/doc/tagbar.txt
+	'''
+	global currenttag
+	global tag_cache
+	window_id = segment_info['window_id']
+	if segment_info['mode'] == 'nc':
+		return tag_cache.get(window_id, (None,))[-1]
+	if not currenttag:
+		if vim_command_exists('Tagbar'):
+			currenttag = vim_get_autoload_func('tagbar#currenttag')
+			if not currenttag:
+				return None
+		else:
+			return None
+	prev_key, r = tag_cache.get(window_id, (None, None))
+	key = (int(vim.eval('b:changedtick')), segment_info['window'].cursor[0])
+	if prev_key and key == prev_key:
+		return r
+	r = currenttag('%s', '', flags)
+	tag_cache[window_id] = (key, r)
+	return r