From faf4d3a47d63aed7866cc50cc8f4f022bd8be43a Mon Sep 17 00:00:00 2001
From: piro <piro@599a83e7-65a4-db11-8015-0010dcdd6dc2>
Date: Wed, 13 Oct 2010 15:06:41 +0000
Subject: [PATCH] =?UTF-8?q?=E4=B8=8D=E5=8F=AF=E8=A6=96=E3=81=AE=E3=82=BF?=
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git-svn-id: http://www.cozmixng.org/repos/piro/treestyletab/trunk@7282 599a83e7-65a4-db11-8015-0010dcdd6dc2
---
 content/treestyletab/treestyletabbrowser.js | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/content/treestyletab/treestyletabbrowser.js b/content/treestyletab/treestyletabbrowser.js
index 2ec30e10..99ae9ae8 100644
--- a/content/treestyletab/treestyletabbrowser.js
+++ b/content/treestyletab/treestyletabbrowser.js
@@ -2550,6 +2550,7 @@ TreeStyleTabBrowser.prototype = {
 		this.internallyTabMovingCount++;
 		var tabs = this.getAllTabsArray(this.mTabBrowser);
 		aChangedTabs = aChangedTabs || tabs;
+		var lastVisibleTab = this.getLastVisibleTab(this.mTabBrowser);
 		tabs.reverse().forEach(function(aTab) {
 			var parent = this.getParentTab(aTab);
 			var attached = false;
@@ -2573,6 +2574,7 @@ TreeStyleTabBrowser.prototype = {
 					this.partTab(aTab);
 				}
 			}
+
 			if (
 				!aTab.hidden &&
 				!attached &&
@@ -2580,6 +2582,15 @@ TreeStyleTabBrowser.prototype = {
 				aChangedTabs.indexOf(aTab) > -1
 				)
 				this.attachTabFromPosition(aTab, tabs.length-1);
+
+			// Hidden tabs have to be moved below visible tabs, because
+			// sometimes hidden tabs between visible tabs break tree
+			// structure.
+			if (aTab.hidden) {
+				let newPos = lastVisibleTab._tPos;
+				if (aTab.tPos < lastVisibleTab._tPos) newPos--;
+				this.mTabBrowser.moveTabTo(aTab, newPos);
+			}
 		}, this);
 		this.internallyTabMovingCount--;
 	},