Bug 430852 [Classic] Missing Treelines in MailNews. p=Mnyromyr <mnyromyr@tprac.de>,r=gavin.sharp

toolkit/content/xul.css

@@ -581,6 +581,11 @@ treecol[hidden="true"] {
   overflow: hidden;
 }
 
+/* ::::: lines connecting cells ::::: */
+tree:not([treelines="true"]) > treechildren::-moz-tree-line {
+  visibility: hidden;
+}
+
 /********** deck & stack *********/
 
 deck {

toolkit/themes/gnomestripe/global/tree.css

@@ -171,11 +171,6 @@ tree[seltype="text"] > treechildren::-moz-tree-cell-text(active, selected, curre
   border: 1px dotted #C0C0C0;
 }
 
-/* ::::: lines connecting cells ::::: */
-
-treechildren::-moz-tree-line {
-  visibility: hidden;
-}
 
 /* ::::: tree separator ::::: */
 

toolkit/themes/winstripe/global/tree.css

@@ -172,9 +172,16 @@ tree[seltype="text"] > treechildren::-moz-tree-cell-text(active, selected, curre
 }
 
 /* ::::: lines connecting cells ::::: */
-/* Windows hasn't used dotted lines for this since XP */
+
+tree[seltype="cell"] > treechildren::-moz-tree-line,
+tree[seltype="text"] > treechildren::-moz-tree-line,
 treechildren::-moz-tree-line {
-  visibility: hidden;
+  border: 1px dotted ThreeDShadow;
+}
+
+tree[seltype="cell"] > treechildren::-moz-tree-line(active, selected, focus),
+treechildren::-moz-tree-line(selected, focus) {
+  border: 1px dotted HighlightText;
 }
 
 /* ::::: tree separator ::::: */