From a12e1a5defaab30bab64ec36d27b6e0f3a8cd570 Mon Sep 17 00:00:00 2001
From: Geoff Lankow <geoff@darktrojan.net>
Date: Wed, 3 Feb 2010 13:59:01 +0100
Subject: [PATCH] Bug 295506 - Variable tabulator width instead of fixed width
 of 4 spaces. r=mrbkap

---
 parser/htmlparser/src/nsViewSourceHTML.cpp | 12 ++++++++++++
 parser/htmlparser/src/nsViewSourceHTML.h   |  1 +
 2 files changed, 13 insertions(+)

diff --git a/parser/htmlparser/src/nsViewSourceHTML.cpp b/parser/htmlparser/src/nsViewSourceHTML.cpp
index 5f905994c511..38fcb948da6d 100644
--- a/parser/htmlparser/src/nsViewSourceHTML.cpp
+++ b/parser/htmlparser/src/nsViewSourceHTML.cpp
@@ -94,6 +94,7 @@ Stopwatch vsTimer;
 // viewsource.css; the setting is remembered between invocations using a pref.
 static const char kBodyId[] = "viewsource";
 static const char kBodyClassWrap[] = "wrap";
+static const char kBodyTabSize[] = "-moz-tab-size: ";
 
 NS_IMPL_ISUPPORTS1(CViewSourceHTML, nsIDTD)
 
@@ -197,6 +198,7 @@ CViewSourceHTML::CViewSourceHTML()
 {
   mSyntaxHighlight = PR_FALSE;
   mWrapLongLines = PR_FALSE;
+  mTabSize = -1;
   nsCOMPtr<nsIPrefBranch> prefBranch(do_GetService(NS_PREFSERVICE_CONTRACTID));
   if (prefBranch) {
     PRBool temp;
@@ -206,6 +208,9 @@ CViewSourceHTML::CViewSourceHTML()
 
     rv = prefBranch->GetBoolPref("view_source.wrap_long_lines", &temp);
     mWrapLongLines = NS_SUCCEEDED(rv) ? temp : PR_FALSE;
+
+    rv = prefBranch->GetIntPref("view_source.tab_size", &temp);
+    mTabSize = NS_SUCCEEDED(rv) ? temp : -1;
   }
 
   mSink = 0;
@@ -402,6 +407,13 @@ NS_IMETHODIMP CViewSourceHTML::BuildModel(nsITokenizer* aTokenizer,
                           NS_LITERAL_STRING("class"),
                           NS_ConvertASCIItoUTF16(kBodyClassWrap));
           }
+          if (mTabSize >= 0) {
+            nsAutoString styleValue = NS_ConvertASCIItoUTF16(kBodyTabSize);
+            styleValue.AppendInt(mTabSize);
+            AddAttrToNode(bodyNode, theAllocator,
+                          NS_LITERAL_STRING("style"),
+                          styleValue);
+          }
           result = mSink->OpenContainer(bodyNode);
           if(NS_SUCCEEDED(result)) mHasOpenBody=PR_TRUE;
         }
diff --git a/parser/htmlparser/src/nsViewSourceHTML.h b/parser/htmlparser/src/nsViewSourceHTML.h
index e7ed360888d2..3a0586e0f3c1 100644
--- a/parser/htmlparser/src/nsViewSourceHTML.h
+++ b/parser/htmlparser/src/nsViewSourceHTML.h
@@ -141,6 +141,7 @@ protected:
     PRInt32             mLineNumber;
     nsITokenizer*       mTokenizer; // weak
 
+    PRInt32             mTabSize;
     PRPackedBool        mSyntaxHighlight;
     PRPackedBool        mWrapLongLines;
     PRPackedBool        mHasOpenRoot;