/home/ivan/src/sit/branches/3.x/scripts/dojo/src/ns.js

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/*
    Copyright (c) 2004-2006, The Dojo Foundation
    All Rights Reserved.

    Licensed under the Academic Free License version 2.1 or above OR the
    modified BSD license. For more information on Dojo licensing, see:

        http://dojotoolkit.org/community/licensing.shtml
*/



dojo.provide("dojo.ns");
dojo.ns = {namespaces:{}, failed:{}, loading:{}, loaded:{}, register:function (name, module, resolver, noOverride) {
    if (!noOverride || !this.namespaces[name]) {
        this.namespaces[name] = new dojo.ns.Ns(name, module, resolver);
    }
}, allow:function (name) {
    if (this.failed[name]) {
        return false;
    }
    if ((djConfig.excludeNamespace) && (dojo.lang.inArray(djConfig.excludeNamespace, name))) {
        return false;
    }
    return ((name == this.dojo) || (!djConfig.includeNamespace) || (dojo.lang.inArray(djConfig.includeNamespace, name)));
}, get:function (name) {
    return this.namespaces[name];
}, require:function (name) {
    var ns = this.namespaces[name];
    if ((ns) && (this.loaded[name])) {
        return ns;
    }
    if (!this.allow(name)) {
        return false;
    }
    if (this.loading[name]) {
        dojo.debug("dojo.namespace.require: re-entrant request to load namespace \"" + name + "\" must fail.");
        return false;
    }
    var req = dojo.require;
    this.loading[name] = true;
    try {
        if (name == "dojo") {
            req("dojo.namespaces.dojo");
        } else {
            if (!dojo.hostenv.moduleHasPrefix(name)) {
                dojo.registerModulePath(name, "../" + name);
            }
            req([name, "manifest"].join("."), false, true);
        }
        if (!this.namespaces[name]) {
            this.failed[name] = true;
        }
    }
    finally {
        this.loading[name] = false;
    }
    return this.namespaces[name];
}};
dojo.ns.Ns = function (name, module, resolver) {
    this.name = name;
    this.module = module;
    this.resolver = resolver;
    this._loaded = [];
    this._failed = [];
};
dojo.ns.Ns.prototype.resolve = function (name, domain, omitModuleCheck) {
    if (!this.resolver || djConfig["skipAutoRequire"]) {
        return false;
    }
    var fullName = this.resolver(name, domain);
    if ((fullName) && (!this._loaded[fullName]) && (!this._failed[fullName])) {
        var req = dojo.require;
        req(fullName, false, true);
        if (dojo.hostenv.findModule(fullName, false)) {
            this._loaded[fullName] = true;
        } else {
            if (!omitModuleCheck) {
                dojo.raise("dojo.ns.Ns.resolve: module '" + fullName + "' not found after loading via namespace '" + this.name + "'");
            }
            this._failed[fullName] = true;
        }
    }
    return Boolean(this._loaded[fullName]);
};
dojo.registerNamespace = function (name, module, resolver) {
    dojo.ns.register.apply(dojo.ns, arguments);
};
dojo.registerNamespaceResolver = function (name, resolver) {
    var n = dojo.ns.namespaces[name];
    if (n) {
        n.resolver = resolver;
    }
};
dojo.registerNamespaceManifest = function (module, path, name, widgetModule, resolver) {
    dojo.registerModulePath(name, path);
    dojo.registerNamespace(name, widgetModule, resolver);
};
dojo.registerNamespace("dojo", "dojo.widget");