Changed core, DB, and data access methods to create everything under a global Scholar object that can be shared across windows

Added include.js for use in non-browser.xul windows to bring in the SCHOLAR_CONFIG and Scholar objects

Adjusted sidebar to use shared object

Added test line (displayable by clicking "Hello, World" before and after sidebar load to demonstrate cross-window access
This commit is contained in:
Dan Stillman 2006-03-20 21:47:22 +00:00
parent dc4f276297
commit 9abad678fe
7 changed files with 116 additions and 94 deletions

View file

@ -1,9 +1,9 @@
/*
* Constructor for Object object
*
* Generally should be called through Scholar_Objects rather than directly
* Generally should be called through Scholar.Objects rather than directly
*/
function Scholar_Object(){
Scholar.Object = function(){
this._init();
// Accept objectTypeID, folderID and orderIndex in constructor
@ -13,7 +13,7 @@ function Scholar_Object(){
}
}
Scholar_Object.prototype._init = function(){
Scholar.Object.prototype._init = function(){
//
// Public members for access by public methods -- do not access directly
//
@ -33,16 +33,16 @@ Scholar_Object.prototype._init = function(){
/*
* Check if the specified field is a primary field from the objects table
*/
Scholar_Object.prototype.isPrimaryField = function(field){
if (!Scholar_Object.primaryFields){
Scholar_Object.primaryFields = Scholar_DB.getColumnHash('objects');
Scholar_Object.primaryFields['firstCreator'] = true;
Scholar.Object.prototype.isPrimaryField = function(field){
if (!Scholar.Object.primaryFields){
Scholar.Object.primaryFields = Scholar.DB.getColumnHash('objects');
Scholar.Object.primaryFields['firstCreator'] = true;
}
return !!Scholar_Object.primaryFields[field];
return !!Scholar.Object.primaryFields[field];
}
Scholar_Object.editableFields = {
Scholar.Object.editableFields = {
title: true,
source: true,
rights: true
@ -51,20 +51,20 @@ Scholar_Object.editableFields = {
/*
* Check if the specified primary field can be changed with setField()
*/
Scholar_Object.prototype.isEditableField = function(field){
return !!Scholar_Object.editableFields[field];
Scholar.Object.prototype.isEditableField = function(field){
return !!Scholar.Object.editableFields[field];
}
/*
* Build object from database
*/
Scholar_Object.prototype.loadFromID = function(id){
Scholar.Object.prototype.loadFromID = function(id){
var sql = 'SELECT O.*, lastName AS firstCreator FROM objects O '
+ 'LEFT JOIN objectCreators OC USING (objectID) '
+ 'LEFT JOIN creators USING (creatorID) '
+ 'WHERE objectID=' + id + ' AND OC.orderIndex=0';
var row = Scholar_DB.rowQuery(sql);
var row = Scholar.DB.rowQuery(sql);
this.loadFromRow(row);
}
@ -72,7 +72,7 @@ Scholar_Object.prototype.loadFromID = function(id){
/*
* Populate basic object data from a database row
*/
Scholar_Object.prototype.loadFromRow = function(row){
Scholar.Object.prototype.loadFromRow = function(row){
this._init();
for (col in row){
if (this.isPrimaryField(col) || col=='firstCreator'){
@ -86,18 +86,18 @@ Scholar_Object.prototype.loadFromRow = function(row){
/*
* Check if any data fields have changed since last save
*/
Scholar_Object.prototype.hasChanged = function(){
Scholar.Object.prototype.hasChanged = function(){
return (this._changed.length || this._changedCreators.length ||
this._changedObjectData.length);
}
Scholar_Object.prototype.getID = function(){
Scholar.Object.prototype.getID = function(){
return this._data['objectID'] ? this._data['objectID'] : false;
}
Scholar_Object.prototype.getType = function(){
Scholar.Object.prototype.getType = function(){
return this._data['objectTypeID'] ? this._data['objectTypeID'] : false;
}
@ -105,7 +105,7 @@ Scholar_Object.prototype.getType = function(){
/*
* Set or change the object's type
*/
Scholar_Object.prototype.setType = function(objectTypeID){
Scholar.Object.prototype.setType = function(objectTypeID){
if (objectTypeID==this.getType()){
return true;
}
@ -116,7 +116,7 @@ Scholar_Object.prototype.setType = function(objectTypeID){
+ 'WHERE objectTypeID=' + this.getType() + ' AND fieldID NOT IN '
+ '(SELECT fieldID FROM objectTypeFields WHERE objectTypeID='
+ objectTypeID + ')';
var obsoleteFields = Scholar_DB.columnQuery(sql);
var obsoleteFields = Scholar.DB.columnQuery(sql);
if (obsoleteFields){
for (var i=0; i<obsoleteFields.length; i++){
@ -134,7 +134,7 @@ Scholar_Object.prototype.setType = function(objectTypeID){
/*
* Returns the number of creators for this object
*/
Scholar_Object.prototype.numCreators = function(){
Scholar.Object.prototype.numCreators = function(){
if (this.getID() && !this._creatorsLoaded){
this._loadCreators();
}
@ -144,7 +144,7 @@ Scholar_Object.prototype.numCreators = function(){
/*
* Returns an array of the creator data at the given position, or false if none
*/
Scholar_Object.prototype.getCreator = function(pos){
Scholar.Object.prototype.getCreator = function(pos){
if (this.getID() && !this._creatorsLoaded){
this._loadCreators();
}
@ -159,7 +159,7 @@ Scholar_Object.prototype.getCreator = function(pos){
/*
* Set or update the creator at the specified position
*/
Scholar_Object.prototype.setCreator = function(orderIndex, firstName, lastName, creatorTypeID){
Scholar.Object.prototype.setCreator = function(orderIndex, firstName, lastName, creatorTypeID){
if (this.getID() && !this._creatorsLoaded){
this._loadCreators();
}
@ -193,7 +193,7 @@ Scholar_Object.prototype.setCreator = function(orderIndex, firstName, lastName,
/*
* Remove a creator and shift others down
*/
Scholar_Object.prototype.removeCreator = function(orderIndex){
Scholar.Object.prototype.removeCreator = function(orderIndex){
if (this.getID() && !this._creatorsLoaded){
this._loadCreators();
}
@ -218,7 +218,7 @@ Scholar_Object.prototype.removeCreator = function(orderIndex){
*
* Field can be passed as fieldID or fieldName
*/
Scholar_Object.prototype.getField = function(field){
Scholar.Object.prototype.getField = function(field){
//Scholar.debug('Requesting field ' + field + ' for object ' + this.getID(), 4);
if (this.isPrimaryField(field)){
return this._data[field] ? this._data[field] : '';
@ -228,7 +228,7 @@ Scholar_Object.prototype.getField = function(field){
this._loadObjectData();
}
var fieldID = Scholar_ObjectFields.getID(field);
var fieldID = Scholar.ObjectFields.getID(field);
return this._objectData[fieldID] ? this._objectData[fieldID] : '';
}
@ -240,7 +240,7 @@ Scholar_Object.prototype.getField = function(field){
*
* Field can be passed as fieldID or fieldName
*/
Scholar_Object.prototype.setField = function(field, value, loadIn){
Scholar.Object.prototype.setField = function(field, value, loadIn){
// Primary field
if (this.isPrimaryField(field)){
if (!this.isEditableField()){
@ -267,13 +267,13 @@ Scholar_Object.prototype.setField = function(field, value, loadIn){
this._loadObjectData();
}
var fieldID = Scholar_ObjectFields.getID(field);
var fieldID = Scholar.ObjectFields.getID(field);
if (!fieldID){
throw (field + ' is not a valid objectData field.');
}
if (!Scholar_ObjectFields.isValidForType(fieldID, this.getType())){
if (!Scholar.ObjectFields.isValidForType(fieldID, this.getType())){
throw (field + ' is not a valid field for this type.');
}
@ -296,7 +296,7 @@ Scholar_Object.prototype.setField = function(field, value, loadIn){
* N.B. This action updates the DB immediately and reloads all cached
* objects -- a save() is not required
*/
Scholar_Object.prototype.setPosition = function(newFolder, newPos){
Scholar.Object.prototype.setPosition = function(newFolder, newPos){
var oldFolder = this.getField('folderID');
var oldPos = this.getField('orderIndex');
@ -308,7 +308,7 @@ Scholar_Object.prototype.setPosition = function(newFolder, newPos){
// If no position provided, drop at end of folder
if (!newPos){
newPos = Scholar_DB.valueQuery('SELECT MAX(orderIndex)+1 FROM ' +
newPos = Scholar.DB.valueQuery('SELECT MAX(orderIndex)+1 FROM ' +
'objects WHERE folderID=' + newFolder);
}
// Otherwise shift down above it in old folder and shift up at it or
@ -326,12 +326,12 @@ Scholar_Object.prototype.setPosition = function(newFolder, newPos){
sql += 'COMMIT;';
Scholar_DB.query(sql);
Scholar.DB.query(sql);
}
this._data['folderID'] = newFolder;
this._data['orderIndex'] = newPos;
Scholar_Objects.reloadAll();
Scholar.Objects.reloadAll();
return true;
}
@ -339,7 +339,7 @@ Scholar_Object.prototype.setPosition = function(newFolder, newPos){
/*
* Save changes back to database
*/
Scholar_Object.prototype.save = function(){
Scholar.Object.prototype.save = function(){
if (!this.hasChanged()){
Scholar.debug('Object ' + this.getID() + ' has not changed', 4);
return !!this.getID();
@ -354,7 +354,7 @@ Scholar_Object.prototype.save = function(){
var objectID = this.getID();
try {
Scholar_DB.beginTransaction();
Scholar.DB.beginTransaction();
//
// Primary fields
@ -397,7 +397,7 @@ Scholar_Object.prototype.save = function(){
sql2 = 'DELETE FROM objectCreators '
+ ' WHERE objectID=' + this.getID()
+ ' AND orderIndex=' + orderIndex;
Scholar_DB.query(sql2);
Scholar.DB.query(sql2);
continue;
}
@ -422,7 +422,7 @@ Scholar_Object.prototype.save = function(){
+ ' WHERE objectID=' + this.getID()
+ ' AND orderIndex=' + orderIndex;
if (Scholar_DB.valueQuery(sql2)){
if (Scholar.DB.valueQuery(sql2)){
sql += 'UPDATE objectCreators SET creatorID='
+ creatorID + ' WHERE objectID=' + this.getID()
+ ' AND orderIndex=' + orderIndex + ";\n";
@ -451,10 +451,10 @@ Scholar_Object.prototype.save = function(){
+ 'WHERE objectID=' + this.getID()
+ ' AND fieldID=' + fieldID;
if (Scholar_DB.valueQuery(sql2)){
if (Scholar.DB.valueQuery(sql2)){
sql += "UPDATE objectData SET value=";
// Take advantage of SQLite's manifest typing
if (Scholar_ObjectFields.isInteger(fieldID)){
if (Scholar.ObjectFields.isInteger(fieldID)){
sql += this.getField(fieldID);
}
else {
@ -467,7 +467,7 @@ Scholar_Object.prototype.save = function(){
sql += 'INSERT INTO objectData VALUES ('
+ this.getID() + ',' + fieldID + ',';
if (Scholar_ObjectFields.isInteger(fieldID)){
if (Scholar.ObjectFields.isInteger(fieldID)){
sql += this.getField(fieldID);
}
else {
@ -491,11 +491,11 @@ Scholar_Object.prototype.save = function(){
}
Scholar_DB.query(sql);
Scholar_DB.commitTransaction();
Scholar.DB.query(sql);
Scholar.DB.commitTransaction();
}
catch (e){
Scholar_DB.rollbackTransaction();
Scholar.DB.rollbackTransaction();
throw (e);
}
}
@ -535,7 +535,7 @@ Scholar_Object.prototype.save = function(){
sqlValues.push({'int':newFolder});
try {
Scholar_DB.beginTransaction();
Scholar.DB.beginTransaction();
// We set the index here within the transaction so that MAX()+1
// stays consistent through the INSERT
@ -544,7 +544,7 @@ Scholar_Object.prototype.save = function(){
sqlValues.push({'int':this.getField('orderIndex')});
}
else {
var newPos = Scholar_DB.valueQuery('SELECT MAX(orderIndex)+1 '
var newPos = Scholar.DB.valueQuery('SELECT MAX(orderIndex)+1 '
+ 'FROM objects WHERE folderID=' + newFolder);
sqlValues.push({'int': newPos});
}
@ -597,14 +597,14 @@ Scholar_Object.prototype.save = function(){
}
sql = sql.substring(0,sql.length-1) + ");\n";
var objectID = Scholar_DB.query(sql,sqlValues);
var objectID = Scholar.DB.query(sql,sqlValues);
if (this._changedObjectData.length){
sql = '';
for (fieldID in this._changedObjectData.items){
sql += 'INSERT INTO objectData VALUES (' +
objectID + ',' + fieldID + ',';
if (Scholar_ObjectFields.isInteger(fieldID)){
if (Scholar.ObjectFields.isInteger(fieldID)){
sql += this.getField(fieldID);
}
else {
@ -614,22 +614,22 @@ Scholar_Object.prototype.save = function(){
}
}
Scholar_DB.query(sql);
Scholar_DB.commitTransaction();
Scholar.DB.query(sql);
Scholar.DB.commitTransaction();
}
catch (e){
Scholar_DB.rollbackTransaction();
Scholar.DB.rollbackTransaction();
throw (e);
}
}
Scholar_Objects.reload(this.getID());
Scholar.Objects.reload(this.getID());
return isNew ? this.getID() : true;
}
Scholar_Object.prototype.toString = function(){
Scholar.Object.prototype.toString = function(){
return this.getTitle();
}
@ -637,7 +637,7 @@ Scholar_Object.prototype.toString = function(){
/*
* Load in the creators from the database
*/
Scholar_Object.prototype._loadCreators = function(){
Scholar.Object.prototype._loadCreators = function(){
if (!this.getID()){
throw ('ObjectID not set for object before attempting to load creators');
}
@ -645,7 +645,7 @@ Scholar_Object.prototype._loadCreators = function(){
var sql = 'SELECT C.creatorID, C.*, orderIndex FROM objectCreators OC '
+ 'LEFT JOIN creators C USING (creatorID) '
+ 'WHERE objectID=' + this.getID() + ' ORDER BY orderIndex';
var creators = Scholar_DB.query(sql);
var creators = Scholar.DB.query(sql);
this._creatorsLoaded = true;
@ -669,7 +669,7 @@ Scholar_Object.prototype._loadCreators = function(){
/*
* Load in the field data from the database
*/
Scholar_Object.prototype._loadObjectData = function(){
Scholar.Object.prototype._loadObjectData = function(){
if (!this.getID()){
throw ('ObjectID not set for object before attempting to load data');
}
@ -679,7 +679,7 @@ Scholar_Object.prototype._loadObjectData = function(){
+ 'objects WHERE objectID=?1) AND OTF.fieldID=OD.fieldID) '
+ 'WHERE objectID=?1 ORDER BY orderIndex';
var result = Scholar_DB.query(sql,[{'int':this._data['objectID']}]);
var result = Scholar.DB.query(sql,[{'int':this._data['objectID']}]);
this._objectDataLoaded = true;
@ -698,7 +698,7 @@ Scholar_Object.prototype._loadObjectData = function(){
var Scholar_Objects = new function(){
Scholar.Objects = new function(){
// Private members
var _objects = new Array();
@ -760,7 +760,7 @@ var Scholar_Objects = new function(){
// TODO: allow folders to intermingle with items, order-wise
+ 'ORDER BY O.folderID=0, F.orderIndex, O.orderIndex';
var ids = Scholar_DB.columnQuery(sql);
var ids = Scholar.DB.columnQuery(sql);
return this.get(ids);
}
@ -799,7 +799,7 @@ var Scholar_Objects = new function(){
function add(data, objectTypeID, folderID, orderIndex){
var insert = new Array();
var obj = new Scholar_Object(objectTypeID, folderID, orderIndex);
var obj = new Scholar.Object(objectTypeID, folderID, orderIndex);
for (field in data){
obj.setField(data[field]);
@ -825,11 +825,11 @@ var Scholar_Objects = new function(){
sql += ' AND O.objectID IN (' + Scholar.join(arguments,',') + ')';
}
var result = Scholar_DB.query(sql);
var result = Scholar.DB.query(sql);
if (result){
for (var i=0,len=result.length; i<len; i++){
var obj = new Scholar_Object();
var obj = new Scholar.Object();
obj.loadFromRow(result[i]);
_objects[result[i]['objectID']] = obj;
}
@ -839,7 +839,7 @@ var Scholar_Objects = new function(){
}
var Scholar_Creators = new function(){
Scholar.Creators = new function(){
var _creators = new Array; // indexed by first%%%last%%%creatorTypeID hash
var _creatorsByID = new Array; // indexed by creatorID
@ -857,7 +857,7 @@ var Scholar_Creators = new function(){
}
var sql = 'SELECT * FROM creators WHERE creatorID=' + creatorID;
var result = Scholar_DB.rowQuery(sql);
var result = Scholar.DB.rowQuery(sql);
if (!result){
return false;
@ -883,7 +883,7 @@ var Scholar_Creators = new function(){
var params = [
{'string': firstName}, {'string': lastName}, {'int': creatorTypeID}
];
var creatorID = Scholar_DB.valueQuery(sql,params);
var creatorID = Scholar.DB.valueQuery(sql,params);
if (creatorID){
_creators[hash] = creatorID;
@ -915,7 +915,7 @@ var Scholar_Creators = new function(){
}
var rnd = Math.floor(Math.random()*max);
var sql2 = 'SELECT COUNT(*) FROM creators WHERE creatorID=' + rnd;
var exists = Scholar_DB.valueQuery(sql2);
var exists = Scholar.DB.valueQuery(sql2);
tries--;
}
while (exists);
@ -924,7 +924,7 @@ var Scholar_Creators = new function(){
{'int': rnd}, {'int': creatorTypeID},
{'string': firstName}, {'string': lastName},
];
return Scholar_DB.query(sql,params);
return Scholar.DB.query(sql,params);
}
@ -936,7 +936,7 @@ var Scholar_Creators = new function(){
function purge(returnSQL){
var sql = 'SELECT creatorID FROM creators WHERE creatorID NOT IN '
+ '(SELECT creatorID FROM objectCreators);';
var toDelete = Scholar_DB.columnQuery(sql);
var toDelete = Scholar.DB.columnQuery(sql);
if (!toDelete){
return false;
@ -946,7 +946,7 @@ var Scholar_Creators = new function(){
+ '(SELECT creatorID FROM objectCreators);';
if (!returnSQL){
var result = Scholar_DB.query(sql);
var result = Scholar.DB.query(sql);
}
// Clear creator entries in internal array
@ -971,7 +971,7 @@ var Scholar_Creators = new function(){
}
var Scholar_ObjectFields = new function(){
Scholar.ObjectFields = new function(){
// Private members
var _fields = new Array();
var _fieldFormats = new Array();
@ -1034,7 +1034,7 @@ var Scholar_ObjectFields = new function(){
var sql = 'SELECT fieldID FROM objectTypeFields '
+ 'WHERE objectTypeID=' + objectTypeID + ' ORDER BY orderIndex';
_objectTypeFields[objectTypeID] = Scholar_DB.columnQuery(sql);
_objectTypeFields[objectTypeID] = Scholar.DB.columnQuery(sql);
return _objectTypeFields[objectTypeID];
}
@ -1045,7 +1045,7 @@ var Scholar_ObjectFields = new function(){
function _getFieldObjectTypes(){
var sql = 'SELECT fieldID,objectTypeID FROM objectTypeFields';
var results = Scholar_DB.query(sql);
var results = Scholar.DB.query(sql);
if (!results){
throw ('No fields in objectTypeFields!');
@ -1067,7 +1067,7 @@ var Scholar_ObjectFields = new function(){
function _loadFields(){
var i,len;
var result = Scholar_DB.query('SELECT * FROM fieldFormats');
var result = Scholar.DB.query('SELECT * FROM fieldFormats');
for (i=0; i<result.length; i++){
_fieldFormats[result[i]['fieldFormatID']] = {
@ -1076,7 +1076,7 @@ var Scholar_ObjectFields = new function(){
};
}
result = Scholar_DB.query('SELECT * FROM fields');
result = Scholar.DB.query('SELECT * FROM fields');
if (!result.length){
throw ('No fields in database!');
@ -1098,7 +1098,7 @@ var Scholar_ObjectFields = new function(){
}
/*
var objects = Scholar_Objects.getAll();
var objects = Scholar.Objects.getAll();
var obj = objects[9];
for (var i=0,len=obj.numCreators(); i<len; i++){

View file

@ -1,7 +1,7 @@
/*
* DB connection and schema management class
*/
var Scholar_DB = new function(){
Scholar.DB = new function(){
// Private members
var _connection;

View file

@ -0,0 +1,6 @@
var Scholar_browserWindow = Components.classes["@mozilla.org/appshell/window-mediator;1"]
.getService(Components.interfaces.nsIWindowMediator)
.getMostRecentWindow("navigator:browser");
const SCHOLAR_CONFIG = Scholar_browserWindow.SCHOLAR_CONFIG;
var Scholar = Scholar_browserWindow.Scholar;

View file

@ -9,13 +9,29 @@ const SCHOLAR_CONFIG = {
/*
* Core functions
*/
var Scholar = {
var Scholar = new function(){
var _initialized = false
this.testString = 'Sidebar is not registered';
this.init = init;
this.debug = debug;
this.varDump = varDump;
this.flattenArguments = flattenArguments;
this.join = join;
this.Hash = Hash;
/*
* Initialize the extension
*/
init: function() {
Scholar_DB.updateSchema();
},
function init(){
if (!_initialized){
Scholar.DB.updateSchema();
_initialized = true;
return true;
}
return false;
}
/*
@ -26,7 +42,7 @@ var Scholar = {
*
* Defaults to log level 3 if level not provided
*/
debug: function(message, level) {
function debug(message, level) {
if (!SCHOLAR_CONFIG['DEBUG_LOGGING']){
return false;
}
@ -50,7 +66,7 @@ var Scholar = {
dump('scholar(' + level + '): ' + message);
}
return true;
},
}
/**
@ -58,7 +74,7 @@ var Scholar = {
*
* Adapted from http://binnyva.blogspot.com/2005/10/dump-function-javascript-equivalent-of.html
*/
varDump: function(arr,level) {
function varDump(arr,level) {
var dumped_text = "";
if (!level){
level = 0;
@ -92,7 +108,7 @@ var Scholar = {
dumped_text = "===>"+arr+"<===("+typeof(arr)+")";
}
return dumped_text;
},
}
/*
@ -100,7 +116,7 @@ var Scholar = {
* an array of values -- allows for functions to accept both arrays of
* values and/or an arbitrary number of individual values
*/
flattenArguments: function(args){
function flattenArguments(args){
var returns = new Array();
for (var i=0; i<args.length; i++){
@ -115,7 +131,7 @@ var Scholar = {
}
return returns;
},
}
/*
@ -124,13 +140,13 @@ var Scholar = {
*
* Note that this is safer than extending Object()
*/
join: function(obj, delim){
function join(obj, delim){
var a = [];
for (var i=0, len=obj.length; i<len; i++){
a.push(obj[i]);
}
return a.join(delim);
},
}
/*
@ -155,7 +171,7 @@ var Scholar = {
* (c) Mojavelinux, Inc.
* License: Creative Commons
*/
Hash: function(){
function Hash(){
this.length = 0;
this.items = new Array();
@ -205,5 +221,4 @@ Scholar.Hash.prototype.has = function(in_key){
return typeof(this.items[in_key]) != 'undefined';
}
window.addEventListener("load", function(e) { Scholar.init(e); }, false);

View file

@ -10,7 +10,7 @@
<script src="data_access.js"/>
<statusbar id="status-bar">
<statusbarpanel id="my-panel" label="&statusbarpanel.helloworld;"/>
<statusbarpanel onclick="alert(Scholar.testString)" id="my-panel" label="&statusbarpanel.helloworld;"/>
</statusbar>
<menupopup id="viewSidebarMenu">

View file

@ -23,7 +23,7 @@ var treeView = {
},
setTree: function(treebox){
this.treebox = treebox;
this.dataObjects = Scholar_Objects.getAll();
this.dataObjects = Scholar.Objects.getAll();
},
isContainer: function(row){ return false; },
isSeparator: function(row){ return false; },
@ -99,4 +99,6 @@ function setView()
{
ScholarLocalizedStrings = document.getElementById('scholar-strings');
document.getElementById('scholar-sidebar-items').view=treeView;
}
}
Scholar.testString = 'Sidebar is registered.';

View file

@ -8,10 +8,9 @@
onload="setView()"
xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" >
<script src="include.js"/>
<script src="sidebar.js"/>
<script src="scholar.js"/>
<script src="db.js"/>
<script src="data_access.js"/>
<stringbundle id="scholar-strings" src="chrome://scholar/locale/scholar.properties"/>
<tree