zotero/components/zotero-service.js

const ZOTERO_CONTRACTID = '@zotero.org/Zotero;1';
const ZOTERO_CLASSNAME = 'Zotero';
const ZOTERO_CID = Components.ID('{e4c61080-ec2d-11da-8ad9-0800200c9a66}');
const ZOTERO_IID = Components.interfaces.chnmIZoteroService; //unused

const Cc = Components.classes;
const Ci = Components.interfaces;

// Assign the global scope to a variable to passed via wrappedJSObject
var ZoteroWrapped = this;


/********************************************************************
* Include the core objects to be stored within XPCOM
*********************************************************************/

var xpcomFiles = [
	'zotero',
	'annotate',
	'attachments',
	'collectionTreeView',
	'csl',
	'dataServer',
	'data_access',
	'data/dataObjects',
	'data/cachedTypes',
	'data/item',
	'data/items',
	'data/collection',
	'data/collections',
	'data/creator',
	'data/creators',
	'data/group',
	'data/groups',
	'data/itemFields',
	'data/notes',
	'data/libraries',
	'data/relation',
	'data/relations',
	'data/tag',
	'data/tags',
	'db',
	'duplicate',
	'enstyle',
	'error',
	'file',
	'fulltext',
	'id',
	'ingester',
	'integration',
	'itemTreeView',
	'mime',
	'mimeTypeHandler',
	'notifier',
	'progressWindow',
	'proxy',
	'quickCopy',
	'report',
	'schema',
	'search',
	'style',
	'sync',
	'storage',
	'timeline',
	'translate',
	'uri',
	'utilities',
	'zeroconf'
];

for (var i=0; i<xpcomFiles.length; i++) {
	try {
		Cc["@mozilla.org/moz/jssubscript-loader;1"]
			.getService(Ci.mozIJSSubScriptLoader)
			.loadSubScript("chrome://zotero/content/xpcom/" + xpcomFiles[i] + ".js");
	}
	catch (e) {
		Components.utils.reportError("Error loading " + xpcomFiles[i] + ".js");
		throw (e);
	}
}


// Load RDF files into Zotero.RDF.AJAW namespace (easier than modifying all of the references)
var rdfXpcomFiles = [
	'rdf/uri',
	'rdf/term',
	'rdf/identity',
	'rdf/match',
	'rdf/n3parser',
	'rdf/rdfparser',
	'rdf/serialize',
	'rdf'
];

Zotero.RDF = {AJAW:{}};

for (var i=0; i<rdfXpcomFiles.length; i++) {
	Cc["@mozilla.org/moz/jssubscript-loader;1"]
		.getService(Ci.mozIJSSubScriptLoader)
		.loadSubScript("chrome://zotero/content/xpcom/" + rdfXpcomFiles[i] + ".js", Zotero.RDF.AJAW);
}


Cc["@mozilla.org/moz/jssubscript-loader;1"]
	.getService(Ci.mozIJSSubScriptLoader)
	.loadSubScript("chrome://global/content/nsTransferable.js");

Cc["@mozilla.org/moz/jssubscript-loader;1"]
	.getService(Ci.mozIJSSubScriptLoader)
	.loadSubScript("chrome://global/content/nsDragAndDrop.js");

/********************************************************************/


// Initialize the Zotero service
//
// This runs when ZoteroService is first requested.
// Calls to other XPCOM components must be in here rather than in top-level
// code, as other components may not have yet been initialized.
function setupService(){
	try {
		Zotero.init();
	}
	catch (e) {
		var msg = typeof e == 'string' ? e : e.name;
		dump(e + "\n\n");
		Components.utils.reportError(e);
		throw (e);
	}
}

function ZoteroService(){
	this.wrappedJSObject = ZoteroWrapped.Zotero;
	setupService();
}


/**
* Convenience method to replicate window.alert()
**/
function alert(msg){
	Cc["@mozilla.org/embedcomp/prompt-service;1"]
		.getService(Ci.nsIPromptService)
		.alert(null, "", msg);
}

/**
* Convenience method to replicate window.confirm()
**/
function confirm(msg){
	return Cc["@mozilla.org/embedcomp/prompt-service;1"]
		.getService(Ci.nsIPromptService)
		.confirm(null, "", msg);
}


/**
* Convenience method to replicate window.setTimeout()
**/
function setTimeout(func, ms){
	var timer = Components.classes["@mozilla.org/timer;1"].
		createInstance(Components.interfaces.nsITimer);
	// {} implements nsITimerCallback
	timer.initWithCallback({notify:func}, ms,
		Components.interfaces.nsITimer.TYPE_ONE_SHOT);
	return timer;
}


//
// XPCOM goop
//
ZoteroService.prototype = {
	QueryInterface: function(iid){
		if (!iid.equals(Components.interfaces.nsISupports) &&
			!iid.equals(ZOTERO_IID)){ // interface unused
			throw Components.results.NS_ERROR_NO_INTERFACE;
		}
		return this;
	}
};


var ZoteroFactory = {
	createInstance: function(outer, iid){
		if (outer != null){
			throw Components.results.NS_ERROR_NO_AGGREGATION;
		}
		return new ZoteroService().QueryInterface(iid);
	}
};


var ZoteroModule = {
	_firstTime: true,
	
	registerSelf: function(compMgr, fileSpec, location, type){
		if (!this._firstTime){
			throw Components.results.NS_ERROR_FACTORY_REGISTER_AGAIN;
		}
		this._firstTime = false;
		
		compMgr =
			compMgr.QueryInterface(Components.interfaces.nsIComponentRegistrar);
		
		compMgr.registerFactoryLocation(ZOTERO_CID,
										ZOTERO_CLASSNAME,
										ZOTERO_CONTRACTID,
										fileSpec,
										location,
										type);
	},
	
	unregisterSelf: function(compMgr, location, type){
		compMgr =
			compMgr.QueryInterface(Components.interfaces.nsIComponentRegistrar);
		compMgr.unregisterFactoryLocation(ZOTERO_CID, location);
	},
	
	getClassObject: function(compMgr, cid, iid){
		if (!cid.equals(ZOTERO_CID)){
			throw Components.results.NS_ERROR_NO_INTERFACE;
		}
		if (!iid.equals(Components.interfaces.nsIFactory)){
			throw Components.results.NS_ERROR_NOT_IMPLEMENTED;
		}
		return ZoteroFactory;
	},
	
	canUnload: function(compMgr){ return true; }
};

function NSGetModule(comMgr, fileSpec){ return ZoteroModule; }