From 5ab839a187860632c5337b72c807d043107dd88b Mon Sep 17 00:00:00 2001
From: Nikolay Yakimov <root@livid.pp.ru>
Date: Sat, 6 Dec 2014 18:33:12 +0300
Subject: Docx Writer: Initial support for --toc option (issue #458)

Creates a "dirty" TOC at the beginning of document, before abstract
---
 src/Text/Pandoc/Writers/Docx.hs | 30 +++++++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/src/Text/Pandoc/Writers/Docx.hs b/src/Text/Pandoc/Writers/Docx.hs
index 81369e278..b019ab73f 100644
--- a/src/Text/Pandoc/Writers/Docx.hs
+++ b/src/Text/Pandoc/Writers/Docx.hs
@@ -581,6 +581,33 @@ mkLvl marker lvl =
 getNumId :: WS Int
 getNumId = (((baseListId - 1) +) . length) `fmap` gets stLists
 
+makeTOC :: WriterOptions -> WS [Element]
+makeTOC opts | writerTableOfContents opts = do
+  let depth = "1-"++(show (writerTOCDepth opts))
+  let tocCmd = "TOC \\o \""++depth++"\" \\h \\z \\u"
+  title <- withParaPropM (pStyleM "TOC Heading") (blocksToOpenXML opts [Para [Str "Table of Contents"]])
+  return $
+    [mknode "w:sdt" [] ([
+      mknode "w:sdtPr" [] (
+        mknode "w:docPartObj" [] (
+          [mknode "w:docPartGallery" [("w:val","Table of Contents")] (),
+          mknode "w:docPartUnique" [] ()]
+        ) -- w:docPartObj
+      ), -- w:sdtPr
+      mknode "w:sdtContent" [] (title++[
+        mknode "w:p" [] (
+          mknode "w:r" [] ([
+            mknode "w:fldChar" [("w:fldCharType","begin"),("w:dirty","true")] (),
+            mknode "w:instrText" [("xml:space","preserve")] tocCmd,
+            mknode "w:fldChar" [("w:fldCharType","separate")] (),
+            mknode "w:fldChar" [("w:fldCharType","end")] ()
+          ]) -- w:r
+        ) -- w:p
+      ])
+    ])] -- w:sdt
+makeTOC _ = return []
+
+
 -- | Convert Pandoc document to two lists of
 -- OpenXML elements (the main document and footnotes).
 writeOpenXML :: WriterOptions -> Pandoc -> WS ([Element], [Element])
@@ -613,7 +640,8 @@ writeOpenXML opts (Pandoc meta blocks) = do
   let blocks' = bottomUp convertSpace blocks
   doc' <- (setFirstPara >> blocksToOpenXML opts blocks')
   notes' <- reverse `fmap` gets stFootnotes
-  let meta' = title ++ subtitle ++ authors ++ date ++ abstract
+  toc <- makeTOC opts
+  let meta' = title ++ subtitle ++ authors ++ date ++ toc ++ abstract
   return (meta' ++ doc', notes')
 
 -- | Convert a list of Pandoc blocks to OpenXML.
-- 
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