Commons:

- Reload bucket on bucket click if not loaded in the last 60 seconds
- Add "Show Original" button to Commons metadata pane to switch back to original linked item, if it exists
- Hide metadata pane tabs in Commons view
- Add support for setting credentials via zotero.org (untested, and not yet stored in Fx login manager)

Also:

- Add ZoteroPane.getItemGroup() function

chrome/content/zotero/overlay.js

@@ -1075,7 +1075,11 @@ var ZoteroPane = new function()
 			}
 		}
 	}
-
+	
+	this.getItemGroup = function () {
+		return this.collectionsView._getItemAtRow(this.collectionsView.selection.currentIndex);
+	}
+	
 
 	function itemSelected()
 	{
@@ -1096,6 +1100,7 @@ var ZoteroPane = new function()
 		
 		var tabs = document.getElementById('zotero-view-tabbox');
 		
+		// Single item selected
 		if (this.itemsView && this.itemsView.selection.count == 1 && this.itemsView.selection.currentIndex != -1)
 		{
 			var item = this.itemsView._getItemAtRow(this.itemsView.selection.currentIndex);
@@ -1142,10 +1147,23 @@ var ZoteroPane = new function()
 			}
 			
 			// Regular item
-			else
-			{
+			else {
+				var isCommons = this.getItemGroup().isBucket();
+				
 				document.getElementById('zotero-item-pane-content').selectedIndex = 1;
-				var pane = document.getElementById('zotero-view-tabbox').selectedIndex;
+				var tabBox = document.getElementById('zotero-view-tabbox');
+				var pane = tabBox.selectedIndex;
+				tabBox.firstChild.hidden = isCommons;
+				
+				var button = document.getElementById('zotero-item-show-original');
+				if (isCommons) {
+					button.hidden = false;
+					button.disabled = !this.getOriginalItem();
+				}
+				else {
+					button.hidden = true;
+				}
+				
 				if (this.collectionsView.editable) {
 					ZoteroItemPane.viewItem(item.ref, null, pane);
 					tabs.selectedIndex = document.getElementById('zotero-view-item').selectedIndex;
@@ -1156,8 +1174,8 @@ var ZoteroPane = new function()
 				}
 			}
 		}
-		else
-		{
+		// Zero or multiple items selected
+		else {
 			document.getElementById('zotero-item-pane-content').selectedIndex = 0;
 			
 			var label = document.getElementById('zotero-view-selected-label');
@@ -1439,6 +1457,25 @@ var ZoteroPane = new function()
 	}
 	
 	
+	// Currently used only for Commons to find original linked item
+	this.getOriginalItem = function () {
+		var item = this.getSelectedItems()[0];
+		var itemGroup = this.getItemGroup();
+		// TEMP: Commons buckets only
+		return itemGroup.ref.getLocalItem(item);
+	}
+	
+	
+	this.showOriginalItem = function () {
+		var item = this.getOriginalItem();
+		if (!item) {
+			Zotero.debug("Original item not found");
+			return;
+		}
+		this.selectItem(item.id);
+	}
+	
+	
 	this.restoreSelectedItems = function () {
 		var items = this.getSelectedItems();
 		if (!items) {

chrome/content/zotero/overlay.xul

@@ -401,6 +401,9 @@
 				<!-- TODO: localize -->
 				<button id="zotero-item-restore-button" label="Restore to Library"
 					oncommand="ZoteroPane.restoreSelectedItems()" hidden="true"/>
+				<!-- TODO: localize -->
+				<button id="zotero-item-show-original" label="Show Original"
+					oncommand="ZoteroPane.showOriginalItem()" hidden="true"/>
 				<deck id="zotero-item-pane-content" selectedIndex="0" flex="1">
 					<groupbox pack="center" align="center">
 						<label id="zotero-view-selected-label"/>

chrome/content/zotero/xpcom/commons.js

@@ -33,6 +33,10 @@ Zotero.Commons = new function() {
 		return Zotero.Prefs.get("commons.enabled");
 	});
 	
+	this.__defineSetter__('enabled', function (val) {
+		return Zotero.Prefs.set("commons.enabled", !!val);
+	});
+	
 	this.__defineGetter__('userIdentifier', function () {
 		return Zotero.Prefs.get("commons.accessKey");
 	});
@@ -41,10 +45,19 @@ Zotero.Commons = new function() {
 		return Zotero.Prefs.get("commons.accessKey");
 	});
 	
+	this.__defineSetter__('accessKey', function (val) {
+		return Zotero.Prefs.set("commons.accessKey", val);
+	});
+	
 	this.__defineGetter__('secretKey', function () {
 		return Zotero.Prefs.get("commons.secretKey");
 	});
 	
+	this.__defineSetter__('secretKey', function (val) {
+		// TODO: use login manager
+		return Zotero.Prefs.set("commons.secretKey", val);
+	});
+	
 	this.RDF_TRANSLATOR = {
 		'label': 'Zotero RDF',
 		'target': 'rdf',
@@ -377,6 +390,7 @@ Zotero.Commons.Bucket = function (name) {
 	this._items = {};
 	this._itemsLoading = false;
 	this._itemsLoaded = false;
+	this._lastLoad = null;
 	
 	this._metadataLoading = false;
 	this._itemDataLoaded = false;
@@ -406,7 +420,7 @@ Zotero.Commons.Bucket.prototype.__defineGetter__('apiURI', function() {
 
 
 Zotero.Commons.Bucket.prototype.relationPredicate = "owl:sameAs";
-
+Zotero.Commons.Bucket.prototype.reloadSeconds = 60;
 
 Zotero.Commons.Bucket.prototype.exists = function (callback, maxTries, tries) {
 	if (!tries) {
@@ -450,10 +464,15 @@ Zotero.Commons.Bucket.prototype.exists = function (callback, maxTries, tries) {
 
 
 Zotero.Commons.Bucket.prototype.getItems = function (callback) {
-	if (this._itemsLoaded || this._itemsLoading) {
+	if (this._itemsLoading ||
+			// Reload if data is too old
+			(this._itemsLoaded && (!this._lastLoad || (new Date - this._lastLoad) < (this.reloadSeconds * 1000)))) {
+		Zotero.debug("Using cached items");
 		return this._getCachedItems();
 	}
 	
+	Zotero.debug("Loading items from IA");
+	
 	this._itemsLoading = true;
 	
 	var method = "GET";
@@ -527,6 +546,7 @@ Zotero.Commons.Bucket.prototype.getItems = function (callback) {
 		
 		self._itemsLoading = false;
 		self._itemsLoaded = true;
+		self._lastLoad = new Date;
 		
 		Zotero.debug(zips);
 		
@@ -630,7 +650,7 @@ Zotero.Commons.Bucket.prototype.getItems = function (callback) {
 							
 							var rels = Zotero.Relations.getByURIs(null, self.relationPredicate, iaFileURI);
 							if (rels.length) {
-								Zotero.debug("Commons: " + IAFileName + " has already been downloaded -- skipping");
+								Zotero.debug("Commons: " + iaFileName + " has already been downloaded -- skipping");
 								continue;
 							}
 							

chrome/content/zotero/xpcom/mimeTypeHandler.js

@@ -65,6 +65,7 @@ Zotero.MIMETypeHandler = new function () {
 		}
 		this.addHandler("text/x-csl", function(a1, a2) { Zotero.Styles.install(a1, a2) });
 		this.addHandler("application/x-zotero-schema", Zotero.Schema.importSchema);
+		this.addHandler("application/x-zotero-settings", Zotero.Prefs.importSettings);
 	}
 	
 	/**

chrome/content/zotero/xpcom/zotero.js

@@ -1360,6 +1360,46 @@ Zotero.Prefs = new function(){
 	}
 	
 	
+	// Import settings bundles
+	this.importSettings = function (str, uri) {
+		var prompt = Components.classes["@mozilla.org/network/default-prompt;1"]
+						.createInstance(Components.interfaces.nsIPrompt);
+		
+		if (!uri.match(/https:\/\/([^\.]+\.)?zotero.org\//)) {
+			Zotero.debug("Ignoring settings file not from https://zotero.org");
+			return;
+		}
+		
+		str = Zotero.Utilities.prototype.trim(str);
+		
+		Zotero.debug(str);
+		
+		prompt.confirm(
+			"",
+			"Apply settings from zotero.org?"
+		);
+		
+		// Convert to DOM XML
+		var xml = Components.classes["@mozilla.org/xmlextras/domparser;1"]
+			.createInstance(Components.interfaces.nsIDOMParser)
+			.parseFromString(str, "text/xml");
+		
+		// TODO: allow arbitrary settings?
+		
+		var commonsEnable = xml.getElementById('commons-enable');
+		if (commonsEnable.nodeValue == 'true') {
+			Zotero.Commons.enabled = true;
+			Zotero.Commons.accessKey = xml.getElementById('commons-accessKey').nodeValue;
+			Zotero.Commons.secretKey = xml.getElementById('commons-secretKey').nodeValue;
+			ZoteroPane.collectionsView.refresh();
+		}
+		else if (commonsEnable == 'false') {
+			Zotero.Commons.enabled = false;
+			ZoteroPane.collectionsView.refresh();
+		}
+	}
+	
+	
 	//
 	// Methods to register a preferences observer
 	//