Copied out scraping progress window for general use -- I'll use this for fulltext indexing notification, and ideally the scraper will use this instead now (Simon, let me know if there's any problem with that)

Example usage:

var windowWatcher = Components.classes["@mozilla.org/embedcomp/window-watcher;1"].
					getService(Components.interfaces.nsIWindowWatcher);
var progress = new Scholar.ProgressWindow(windowWatcher.activeWindow);
progress.changeHeadline('Indexing item...');
progress.addLines(['All About Foo'], ['chrome://scholar/skin/treeitem-book.png']);
progress.addDescription('Bar bar bar bar bar');
progress.show();
progress.fade();

chrome/chromeFiles/content/scholar/progressWindow.xul

@@ -0,0 +1,17 @@
+<?xml version="1.0"?>
+
+<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
+<?xml-stylesheet href="chrome://scholar/skin/scholar.css" type="text/css"?>
+
+<window id="zotero-progress-window"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        windowtype="alert:alert"
+        align="start">
+
+	<hbox id="zotero-progress-box">
+		<vbox id="zotero-progress-text-box">
+			<label id="zotero-progress-text-headline" style="font-weight: bold;" />
+		</vbox>
+	</hbox>
+
+</window>

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

@@ -0,0 +1,135 @@
+/*
+ * Handles the display of a div showing progress in scraping, indexing, etc.
+ *
+ * Pass the active window into the constructor
+ */
+Scholar.ProgressWindow = function(_window){
+	var _progressWindow = null;
+	var _windowLoaded = false;
+	var _windowLoading = false;
+	// keep track of all of these things in case they're called before we're
+	// done loading the progress window
+	var _loadDescription = null;
+	var _loadLines = new Array();
+	var _loadIcons = new Array();
+	var _loadHeadline = '';
+	
+	this.show = show;
+	this.changeHeadline = changeHeadline;
+	this.addLines = addLines;
+	this.addDescription = addDescription;
+	this.fade = fade;
+	this.kill = kill;
+	
+	function show() {
+		if(_windowLoading || _windowLoaded) {	// already loading or loaded
+			return false;
+		}
+		_progressWindow = _window.openDialog("chrome://scholar/chrome/progressWindow.xul",
+		                                    "", "chrome,dialog=no,titlebar=no,popup=yes");
+		_progressWindow.addEventListener("load", _onWindowLoaded, false);
+		_windowLoading = true;
+		
+		return true;
+	}
+	
+	function changeHeadline(headline) {
+		if(_windowLoaded) {
+			_progressWindow.document.getElementById("zotero-progress-text-headline").value = headline;
+		} else {
+			_loadHeadline = headline;
+		}
+	}
+	
+	function addLines(label, icon) {
+		if(_windowLoaded) {
+			for(i in label) {
+				var newLabel = _progressWindow.document.createElement("label");
+				newLabel.setAttribute("class", "zotero-progress-item-label");
+				newLabel.setAttribute("crop", "end");
+				newLabel.setAttribute("value", label[i]);
+				
+				var newImage = _progressWindow.document.createElement("image");
+				newImage.setAttribute("class", "zotero-progress-item-icon");
+				newImage.setAttribute("src", icon[i]);
+				
+				var newHB = _progressWindow.document.createElement("hbox");
+				newHB.setAttribute("class", "zotero-progress-item-hbox");
+				newHB.setAttribute("valign", "center");
+				newHB.appendChild(newImage);
+				newHB.appendChild(newLabel);
+				
+				_progressWindow.document.getElementById("zotero-progress-text-box").appendChild(newHB);
+			}
+			
+			_move();
+		} else {
+			_loadLines = _loadLines.concat(label);
+			_loadIcons = _loadIcons.concat(icon);
+		}
+	}
+	
+	function addDescription(text) {
+		if(_windowLoaded) {
+			var newHB = _progressWindow.document.createElement("hbox");
+			newHB.setAttribute("class", "zotero-progress-item-hbox");
+			var newDescription = _progressWindow.document.createElement("description");
+			newDescription.setAttribute("class", "zotero-progress-description");
+			var newText = _progressWindow.document.createTextNode(text);
+			
+			newDescription.appendChild(newText);
+			newHB.appendChild(newDescription);
+			_progressWindow.document.getElementById("zotero-progress-text-box").appendChild(newHB);
+			
+			_move();
+		} else {
+			_loadDescription = text;
+		}
+	}
+	
+	function fade() {
+		if(_windowLoaded || _windowLoading) {
+			_window.setTimeout(_timeout, 2500);
+		}
+	}
+	
+	function kill() {
+		_windowLoaded = false;
+		_windowLoading = false;
+		try {
+			_progressWindow.close();
+		} catch(ex) {}
+	}
+	
+	function _onWindowLoaded() {
+		_windowLoading = false;
+		_windowLoaded = true;
+		
+		_move();
+		// do things we delayed because the window was loading
+		changeHeadline(_loadHeadline);
+		addLines(_loadLines, _loadIcons);
+		if(_loadDescription) {
+			addDescription(_loadDescription);
+		}
+		
+		// reset parameters
+		_loadDescription = null;
+		_loadLines = new Array();
+		_loadIcons = new Array();
+		_loadHeadline = '';
+	}
+	
+	function _move() {
+		_progressWindow.sizeToContent();
+		_progressWindow.moveTo(
+			_window.screenX + _window.innerWidth - _progressWindow.outerWidth - 30,
+			_window.screenY + _window.innerHeight - _progressWindow.outerHeight - 10
+		);
+	}
+	
+	function _timeout() {
+		kill();	// could check to see if we're really supposed to fade yet
+				// (in case multiple scrapers are operating at once)
+	}
+}

chrome/chromeFiles/skin/default/scholar/scholar.css

@@ -147,7 +147,7 @@ zoterosearchtextbox .toolbarbutton-menu-dropmarker
 	background: #666666;
 }
 
-#scholar-progress-box
+#zotero-progress-box, #scholar-progress-box
 {
 	border: 2px solid #7a0000;
 	margin: 0;
@@ -156,13 +156,13 @@ zoterosearchtextbox .toolbarbutton-menu-dropmarker
 	padding-bottom: 3px;
 }
 
-.scholar-progress-item-icon
+.zotero-progress-item-icon, .scholar-progress-item-icon
 {
 	width: 16px;
 	height: 16px;
 }
 
-.scholar-progress-item-hbox
+.zotero-progress-item-hbox, .scholar-progress-item-hbox
 {
 	padding-left: 5px;
 	margin-top: 3px;

components/chnmIZoteroService.js

@@ -82,6 +82,10 @@ Cc["@mozilla.org/moz/jssubscript-loader;1"]
 	.getService(Ci.mozIJSSubScriptLoader)
 	.loadSubScript("chrome://scholar/content/xpcom/collectionTreeView.js");
 
+Cc["@mozilla.org/moz/jssubscript-loader;1"]
+	.getService(Ci.mozIJSSubScriptLoader)
+	.loadSubScript("chrome://scholar/content/xpcom/progressWindow.js");
+
 Cc["@mozilla.org/moz/jssubscript-loader;1"]
 	.getService(Ci.mozIJSSubScriptLoader)
 	.loadSubScript("chrome://global/content/nsTransferable.js");