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- /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
- *
- * ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is Chatzilla.
- *
- * The Initial Developer of the Original Code is
- * New Dimensions Consulting, Inc.
- * Portions created by the Initial Developer are Copyright (C) 1999
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- * Robert Ginda, rginda@ndcico.com, original author
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
- /*
- * This file is largely a ripoff of the chatzilla rdf.js file. It could (and
- * probably should) be refactored into a more reusable library, and placed in
- * some global place (like utils.js)
- */
-
- /*
- * The RDFHelper class wraps useful the RDFService and in-memory-datasource
- * into a single object making them generally easier to use, and defines
- * some RDF resources and literals that will be used throughout the app.
- * it also makes it wasy to debug RDF asserts, (by forwarding
- * RDFHelper.prototype.Assert() to RDFHelper.prototype.dAssert().)
- */
-
- const RES_PFX = "http://www.mozilla.org/NC-xpcom#";
-
- const nsIRDFResource = Components.interfaces.nsIRDFResource;
- const nsIRDFNode = Components.interfaces.nsIRDFNode;
- const nsIRDFLiteral = Components.interfaces.nsIRDFLiteral;
-
- function RDFHelper()
- {
- const RDF_MEMORYDS_CONTRACTID =
- "@mozilla.org/rdf/datasource;1?name=in-memory-datasource";
- const RDF_DS_IID = Components.interfaces.nsIRDFDataSource;
-
- const RDF_DS_CONTRACTID = "@mozilla.org/rdf/rdf-service;1";
- const RDF_SVC_IID = Components.interfaces.nsIRDFService;
-
- this.ds =
- Components.classes[RDF_MEMORYDS_CONTRACTID].createInstance(RDF_DS_IID);
- this.svc =
- Components.classes[RDF_DS_CONTRACTID].getService(RDF_SVC_IID);
-
- /* predefined nodes */
- this.resRoot = this.svc.GetResource ("NC:cview-data");
- this.resEmptyRoot = this.svc.GetResource ("NC:cview-data-empty");
-
- /* predefined arcs */
- this.resCmp = this.svc.GetResource (RES_PFX + "component");
- this.resContractID = this.svc.GetResource (RES_PFX + "contractid");
- this.resCLSID = this.svc.GetResource (RES_PFX + "clsid");
- this.resIfc = this.svc.GetResource (RES_PFX + "interface");
- this.resIName = this.svc.GetResource (RES_PFX + "iname");
- this.resIID = this.svc.GetResource (RES_PFX + "iid");
- this.resShow = this.svc.GetResource (RES_PFX + "show");
-
- /* predefined literals */
- this.litTrue = this.svc.GetLiteral ("true");
- this.litFalse = this.svc.GetLiteral ("false");
-
- }
-
- RDFHelper.prototype.GetResource =
- function rdf_getr (s)
- {
- return this.svc.GetResource(s);
- }
-
- RDFHelper.prototype.GetLiteral =
- function rdf_getl (s)
- {
- if (!s)
- {
- dd ("rdf_getl: no argument provided!");
- dd (getStackTrace());
-
- return "";
- }
-
- return this.svc.GetLiteral(s);
- }
-
- RDFHelper.prototype.Assert =
- function rdf_assert (n1, a, n2, f)
- {
- if (typeof f == "undefined")
- f = true;
-
- // return this.dAssert (n1, a, n2, f);
- return this.ds.Assert (n1, a, n2, f);
- }
-
- RDFHelper.prototype.Unassert =
- function rdf_uassert (n1, a, n2)
- {
- /*return this.dUnassert (n1, a, n2);*/
- return this.ds.Unassert (n1, a, n2);
- }
-
- RDFHelper.prototype.dAssert =
- function rdf_dassert (n1, a, n2, f)
- {
- var n1v = n1 ? n1.Value : "!!!";
- var av = a ? a.Value : "!!!";
- var n2v = n2 ? n2.Value : "!!!";
-
- if (!n1 || !a || !n2)
- {
- dd ("n1 " + n1v + " a " + av + " n2 " + n2v);
- dd(getStackTrace());
- }
-
- this.ds.Assert (n1, a, n2, f)
- }
-
- RDFHelper.prototype.dUnassert =
- function rdf_duassert (n1, a, n2)
- {
-
- var n1v = n1 ? n1.Value : "!!!";
- var av = a ? a.Value : "!!!";
- var n2v = n2 ? n2.Value : "!!!";
-
- if (!n1 || !a || !n2)
- dd(getStackTrace());
-
- this.ds.Unassert (n1, a, n2)
-
- }
-
- RDFHelper.prototype.Change =
- function rdf_duassert (n1, a, n2)
- {
-
- var oldN2 = this.ds.GetTarget (n1, a, true);
- if (!oldN2)
- {
- dd ("** Unable to change " + n1.Value + " -[" + a.Value + "]->, " +
- "because old value was not found.");
- return;
- }
-
- this.ds.Change (n1, a, oldN2, n2);
-
- }
-
- RDFHelper.prototype.GetTarget =
- function rdf_gettarget (n1, a)
- {
- return this.ds.GetTarget (n1, a, true);
- }
-
- RDFHelper.prototype.GetTargets =
- function rdf_gettarget (n1, a)
- {
- return this.ds.GetTargets (n1, a, true);
- }
-
- RDFHelper.prototype.clearTargets =
- function rdf_inittree (n1, a, recurse)
- {
- if (typeof recurse == "undefined")
- recurse = false;
-
- var targets = this.ds.GetTargets(n1, a, true);
-
- while (targets.hasMoreElements())
- {
- var n2 = targets.getNext().QueryInterface(nsIRDFNode);
-
- if (recurse)
- {
- try
- {
- var resN2 = n2.QueryInterface(nsIRDFResource);
- var arcs = this.ds.ArcLabelsOut(resN2);
-
- while (arcs.hasMoreElements())
- {
- arc = arcs.getNext().QueryInterface(nsIRDFNode);
- this.clearTargets (resN2, arc, true);
- }
- }
- catch (e)
- {
- /*
- dd ("** Caught " + e + " while recursivley clearing " +
- n2.Value + " **");
- */
- }
- }
-
- this.Unassert (n1, a, n2);
- }
- }
-
- RDFHelper.prototype.initTree =
- function rdf_inittree (id)
- {
- var tree = document.getElementById (id);
- tree.database.AddDataSource (this.ds);
- }
-
- RDFHelper.prototype.setTreeRoot =
- function rdf_settroot (id, root)
- {
- var tree = document.getElementById (id);
-
- if (typeof root == "object")
- root = root.Value;
- tree.setAttribute ("ref", root);
- }
-
- RDFHelper.prototype.getTreeRoot =
- function rdf_gettroot (id, root)
- {
- var tree = document.getElementById (id);
-
- return tree.getAttribute ("ref");
- }
-