From a5329880d791f93a45201199210ba0973c6a86d6 Mon Sep 17 00:00:00 2001
From: Dan Stillman <dstillman@zotero.org>
Date: Wed, 27 Jan 2010 10:39:35 +0000
Subject: [PATCH] - Purge tags immediately on delete from tag selector - Adds
 optional tagIDs parameter to Zotero.Tags.purge()

---
 .../content/zotero/bindings/tagselector.xml   |  1 +
 chrome/content/zotero/xpcom/data/tags.js      | 57 ++++++++++++-------
 2 files changed, 38 insertions(+), 20 deletions(-)

diff --git a/chrome/content/zotero/bindings/tagselector.xml b/chrome/content/zotero/bindings/tagselector.xml
index 21ee307e7..812d58d27 100644
--- a/chrome/content/zotero/bindings/tagselector.xml
+++ b/chrome/content/zotero/bindings/tagselector.xml
@@ -682,6 +682,7 @@
 						}
 						
 						Zotero.Tags.erase(tagIDs);
+						Zotero.Tags.purge(tagIDs);
 						
 						Zotero.DB.commitTransaction()
 					}
diff --git a/chrome/content/zotero/xpcom/data/tags.js b/chrome/content/zotero/xpcom/data/tags.js
index 458f9b31e..298b131c9 100644
--- a/chrome/content/zotero/xpcom/data/tags.js
+++ b/chrome/content/zotero/xpcom/data/tags.js
@@ -399,37 +399,54 @@ Zotero.Tags = new function() {
 	}
 	
 	
-	/*
+	/**
 	 * Delete obsolete tags from database and clear internal array entries
 	 *
-	 * Returns removed tagIDs on success
+	 * @param	[Integer[]|Integer]		[tagIDs]	tagID or array of tagIDs to purge
 	 */
-	function purge() {
-		if (!Zotero.Prefs.get('purge.tags')) {
+	function purge(tagIDs) {
+		if (!tagIDs && !Zotero.Prefs.get('purge.tags')) {
 			return;
 		}
 		
+		if (tagIDs) {
+			tagIDs = Zotero.flattenArguments(tagIDs);
+		}
+		
 		Zotero.UnresponsiveScriptIndicator.disable();
 		try {
 			Zotero.DB.beginTransaction();
 			
-			var sql = "CREATE TEMPORARY TABLE tagDelete AS "
-				+ "SELECT tagID FROM tags WHERE tagID "
-				+ "NOT IN (SELECT tagID FROM itemTags)";
-			Zotero.DB.query(sql);
-			
-			sql = "CREATE INDEX tagDelete_tagID ON tagDelete(tagID)";
-			Zotero.DB.query(sql);
-			
-			sql = "SELECT * FROM tagDelete";
-			var toDelete = Zotero.DB.columnQuery(sql);
-			
-			if (!toDelete) {
-				sql = "DROP TABLE tagDelete";
+			// Use given tags
+			if (tagIDs) {
+				var sql = "CREATE TEMPORARY TABLE tagDelete (tagID INT PRIMARY KEY)";
 				Zotero.DB.query(sql);
-				Zotero.DB.commitTransaction();
-				Zotero.Prefs.set('purge.tags', false);
-				return;
+				for each(var id in tagIDs) {
+					Zotero.DB.query("INSERT OR IGNORE INTO tagDelete VALUES (?)", id);
+				}
+				// Remove duplicates
+				var toDelete = Zotero.DB.columnQuery("SELECT * FROM tagDelete");
+			}
+			// Look for orphaned tags
+			else {
+				var sql = "CREATE TEMPORARY TABLE tagDelete AS "
+					+ "SELECT tagID FROM tags WHERE tagID "
+					+ "NOT IN (SELECT tagID FROM itemTags)";
+				Zotero.DB.query(sql);
+				
+				sql = "CREATE INDEX tagDelete_tagID ON tagDelete(tagID)";
+				Zotero.DB.query(sql);
+				
+				sql = "SELECT * FROM tagDelete";
+				var toDelete = Zotero.DB.columnQuery(sql);
+				
+				if (!toDelete) {
+					sql = "DROP TABLE tagDelete";
+					Zotero.DB.query(sql);
+					Zotero.DB.commitTransaction();
+					Zotero.Prefs.set('purge.tags', false);
+					return;
+				}
 			}
 			
 			var notifierData = {};