From 96fc9b2b2e4e486d92e45d4e60e2533acf2b32d2 Mon Sep 17 00:00:00 2001
From: piro <piro@599a83e7-65a4-db11-8015-0010dcdd6dc2>
Date: Wed, 20 Jan 2010 12:36:19 +0000
Subject: [PATCH] =?UTF-8?q?=E3=83=96=E3=83=83=E3=82=AF=E3=83=9E=E3=83=BC?=
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git-svn-id: http://www.cozmixng.org/repos/piro/treestyletab/trunk@6120 599a83e7-65a4-db11-8015-0010dcdd6dc2
---
 content/treestyletab/bookmarksOverlay.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/content/treestyletab/bookmarksOverlay.js b/content/treestyletab/bookmarksOverlay.js
index 1eb1706f..476959a4 100644
--- a/content/treestyletab/bookmarksOverlay.js
+++ b/content/treestyletab/bookmarksOverlay.js
@@ -13,6 +13,9 @@ var TreeStyleTabBookmarksService = {
 
 	beginAddBookmarksFromTabs : function TSTBMService_beginAddBookmarksFromTabs(aTabs) /* PUBLIC API */ 
 	{
+		if (this._observing) return;
+		this._observing = true;
+
 		this._addingBookmarks = [];
 		this._addingBookmarkTreeStructure = this
 				.cleanUpTabsArray(aTabs)
@@ -26,6 +29,9 @@ var TreeStyleTabBookmarksService = {
  
 	endAddBookmarksFromTabs : function TSTBMService_endAddBookmarksFromTabs() /* PUBLIC API */ 
 	{
+		if (!this._observing) return;
+		this._observing = false;
+
 		this.BookmarksService.removeObserver(this);
 
 		// this is adding bookmark folder from tabs, so ignroe the first item!