From 33a61e38b4b877432840d6ac8101f98ca67739d4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Karl=20Yngve=20Lerv=C3=A5g?= <karl.yngve+git@gmail.com>
Date: Tue, 10 Mar 2015 22:37:54 +0100
Subject: [PATCH] Run callbacks only when appropriate (fixes #132)

---
 autoload/vimtex/view.vim | 28 +++++++++++++++++++++-------
 1 file changed, 21 insertions(+), 7 deletions(-)

diff --git a/autoload/vimtex/view.vim b/autoload/vimtex/view.vim
index 4e650b3..0ad2004 100644
--- a/autoload/vimtex/view.vim
+++ b/autoload/vimtex/view.vim
@@ -207,10 +207,17 @@ endfunction
 
 " }}}2
 function! s:mupdf.latexmk_callback() dict " {{{2
-  call self.xwin_get_id()
-  call self.xwin_send_keys(g:vimtex_view_mupdf_send_keys)
-  call self.forward_search()
-  call self.focus_vim()
+  " Try to get xwin ID
+  if !self.xwin_exists()
+    call self.xwin_get_id()
+  endif
+
+  " Some additional callbacks if possible
+  if self.xwin_exists()
+    call self.xwin_send_keys(g:vimtex_view_mupdf_send_keys)
+    call self.forward_search()
+    call self.focus_vim()
+  endif
 endfunction
 
 " }}}2
@@ -355,9 +362,16 @@ endfunction
 
 " }}}2
 function! s:zathura.latexmk_callback() dict " {{{2
-  call self.xwin_get_id()
-  call self.forward_search()
-  call self.focus_vim()
+  " Try to get xwin ID
+  if !self.xwin_exists()
+    call self.xwin_get_id()
+  endif
+
+  " Some additional callbacks if possible
+  if self.xwin_exists()
+    call self.forward_search()
+    call self.focus_vim()
+  endif
 endfunction
 
 " }}}2