- Change: Scholar.Notifier.trigger() can be passed an array of ids in some cases rather than a single id -- trees that implement notify() should use Scholar.flattenArguments(ids) to get an array either way

- Added Notifier triggers to Item.erase() (which only runs if not in a nested transaction) and Collections.erase()

- notify() in ItemTreeView updated with example of taking multiple ids, though it doesn't actually work (and notify() implementations may decide just to refresh the whole tree when ids.length>1 rather than dealing with changes individually)

- When deleting collections, use DB tables that actually exist

chrome/chromeFiles/content/scholar/itemTreeView.js

@@ -156,9 +156,13 @@ Scholar.ItemTreeView.prototype.getCollectionID = function()
 }
 
 //CALLED BY DATA LAYER ON CHANGE:
-Scholar.ItemTreeView.prototype.notify = function(action, type, id)
+Scholar.ItemTreeView.prototype.notify = function(action, type, ids)
 {
-	var row = this._itemRowMap[id];
+	ids = Scholar.flattenArguments(ids);
+	
+	for (var i=0, len=ids.length; i<len; i++){
+	
+		var row = this._itemRowMap[ids[i]];
 		if(action == 'remove' && row)
 		{
 			this._hideItem(row);
@@ -170,7 +174,7 @@ Scholar.ItemTreeView.prototype.notify = function(action, type, id)
 		}
 		else if(action == 'add' && !row)
 		{
-		var item = Scholar.Items.get(id);
+			var item = Scholar.Items.get(ids[i]);
 			
 			if(this._itemGroup.isLibrary() || item.inCollection(this.getCollectionID()))
 			{
@@ -184,5 +188,7 @@ Scholar.ItemTreeView.prototype.notify = function(action, type, id)
 			return;
 		}
 		
+	}
+	
 	this._refreshHashMap();
 }

chrome/chromeFiles/content/scholar/xpcom/data_access.js

@@ -324,6 +324,7 @@ Scholar.Item.prototype.setField = function(field, value, loadIn){
 	}
 }
 
+
 /*
  * Save changes back to database
  */
@@ -634,9 +635,12 @@ Scholar.Item.prototype.erase = function(){
 		throw (e);
 	}
 	
-	Scholar.Items.unload(this.getID());
+	// If we're not in the middle of a larger commit, trigger the notifier now
+	if (!Scholar.DB.transactionInProgress()){
+		Scholar.Notifier.trigger('remove', 'item', this.getID());
+	}
 	
-	// TODO: trigger reloading of treeview
+	Scholar.Items.unload(this.getID());
 }
 
 
@@ -1043,6 +1047,7 @@ Scholar.Collection.prototype.erase = function(deleteItems){
 	
 	var descendents = this._getDescendents();
 	var collections = new Array(this._id);
+	var items = new Array();
 	
 	for(var i=0, len=descendents.length; i<len; i++){
 		// Descendent collections
@@ -1055,21 +1060,25 @@ Scholar.Collection.prototype.erase = function(deleteItems){
 				// Delete items from DB
 				Scholar.Items.get(descendents[i]['id']).erase();
 			}
+			items.push(descendents[i]['id']);
 		}
 	}
 	
 	// Remove item associations for all descendent collections
-	Scholar.DB.query('DELETE FROM itemCollections WHERE collectionID IN ('
+	Scholar.DB.query('DELETE FROM collectionItems WHERE collectionID IN ('
 		+ collections.join() + ')');
 	
 	// And delete all descendent collections
-	Scholar.DB.query('DELETE FROM collection WHERE collectionID IN ('
+	Scholar.DB.query('DELETE FROM collections WHERE collectionID IN ('
 		+ collections.join() + ')');
 	
+	Scholar.DB.commitTransaction();
+	
+	Scholar.Notifier.trigger('remove', 'collection', collections);
+	Scholar.Notifier.trigger('remove', 'item', items);
+	
 	// Clear deleted collection from internal memory
 	Scholar.Collections.unload(collections);
-	
-	Scholar.DB.commitTransaction();
 }
 
 

chrome/chromeFiles/content/scholar/xpcom/notifier.js

@@ -26,10 +26,11 @@ Scholar.Notifier = new function(){
 	}
 	
 	/**
-	* event is one of 'add', 'remove', 'modify'
-	* type is one of 'collection', 'smartcollection', 'item'
+	* event - 'add', 'remove', 'modify'
+	* type - 'collection', 'smartcollection', 'item'
+	* ids - single id or array of ids
 	**/
-	function trigger(event, type, id){
+	function trigger(event, type, ids){
 		switch (type){
 			case 'item':
 				var treeType = 'itemTree';
@@ -44,8 +45,8 @@ Scholar.Notifier = new function(){
 		
 		for (i in _observers[treeType]){
 			Scholar.debug("Calling _observers['" + treeType + "']['" + i + "'].notify('" + event
-				+ "', " + type + "', " + id + ")", 4);
-			_observers[treeType][i].notify(event, type, id);
+				+ "', " + type + "', " + ids.join() + ")", 4);
+			_observers[treeType][i].notify(event, type, ids);
 		}
 	}