// The PasspetJava XPCOM component provides a place to store and retrieve
// the Java LiveConnect object so that other components have access to Java.

// Shorthand for getting XPConnect interfaces, classes, objects, and services.
const XPI = Components.interfaces, XPC = Components.classes;
function XPC_(c) { return XPC[c.match(/^@/) ? c : '@mozilla.org/' + c]; }
function XPO(c, i) { return XPC_(c) ? XPC_(c).createInstance(i) : null; }
function XPS(c, i) { return XPC_(c) ? XPC_(c).getService(i) : null; }
function XQI(o, i) { return o.QueryInterface(i); }

const XPR = Components.results;
const CID = Components.ID('{3dedbdc8-91ca-5f13-bb4b-70fc4e4b5c7e}');
const NAME = 'Java Service';
const CONTRACT = '@passpet.org/java;1';

// The module registers and unregisters the Passpet component interface.
function NSGetModule(manager, filespec) {
    return new function() {
        this.registerSelf = function(manager, filespec, location, type) {
            manager = XQI(manager, XPI.nsIComponentRegistrar);
            manager.registerFactoryLocation(
                CID, NAME, CONTRACT, filespec, location, type);
        };

        this.unregisterSelf = function(manager, location, type) {
            manager = XQI(manager, XPI.nsIComponentRegistrar);
            manager.unregisterFactoryLocation(CID, location);
        };

        this.canUnload = function(manager) {
            return true;
        };

        this.getClassObject = function(manager, cid, iid) {
            if (!iid.equals(XPI.nsIFactory)) throw XPR.NS_ERROR_NOT_IMPLEMENTED;
            if (!cid.equals(CID)) throw XPR.NS_ERROR_NO_INTERFACE;
            return new function() {
                this.createInstance = function(outer, iid) {
                    if (outer != null) throw XPR.NS_ERROR_NO_AGGREGATION;
                    return XQI(new service(), iid);
                };
            };
        };
    };
};

const service = function() {
    this.wrappedJSObject = this; // Expose internal fields across XPCOM.
    this.java = null; // A place to put the Java LiveConnect object.

    // This method implements the nsISupports interface.
    this.QueryInterface = function(iid) {
        if (iid.equals(XPI.IPasspetJava)) return this;
        if (iid.equals(XPI.nsISupports)) return this;
        throw XPR.NS_ERROR_NO_INTERFACE;
    };
};