2471024921
r=ashuk bug=2069 Native code for spec compliant webclient impl. git-svn-id: svn://10.0.0.236/trunk@62196 18797224-902f-48f8-a5cc-f745e15eee43
511 lines
15 KiB
C++
511 lines
15 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is RaptorCanvas.
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*
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* The Initial Developer of the Original Code is Kirk Baker and
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* Ian Wilkinson. Portions created by Kirk Baker and Ian Wilkinson are
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* Copyright (C) 1999 Kirk Baker and Ian Wilkinson. All
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* Rights Reserved.
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*
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* Contributor(s): Ed Burns <edburns@acm.org>
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*/
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#include "rdf_util.h"
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#include "nsIServiceManager.h"
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static PRBool rdf_inited = PR_FALSE;
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nsCOMPtr<nsIRDFContainerUtils> gRDFCU = NULL;
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nsCOMPtr<nsIRDFService> gRDF = NULL;
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nsCOMPtr<nsIBookmarksService> gBookmarks = NULL;
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nsCOMPtr<nsIRDFDataSource> gBookmarksDataSource = NULL;
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nsCOMPtr<nsIRDFResource> kNC_BookmarksRoot = NULL;
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nsCOMPtr<nsIRDFResource> kNC_Name = NULL;
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nsCOMPtr<nsIRDFResource> kNC_URL = NULL;
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nsCOMPtr<nsIRDFResource> kNC_Folder = NULL;
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nsCOMPtr<nsIRDFResource> kRDF_type = NULL;
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nsresult rdf_InitRDFUtils()
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{
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nsresult rv = NS_ERROR_FAILURE;
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if (rdf_inited) {
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return NS_OK;
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}
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// Init the global instances
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if (NULL == gBookmarks) {
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// Get the bookmarks service
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rv = nsServiceManager::GetService(NS_IBOOKMARKSSERVICE_PROGID,
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NS_GET_IID(nsIBookmarksService),
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getter_AddRefs(gBookmarks));
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if (NS_FAILED(rv)) {
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return rv;
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}
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}
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if (NULL == gBookmarksDataSource) {
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// get the bookmarks service as an RDFDataSource
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rv = gBookmarks->QueryInterface(NS_GET_IID(nsIRDFDataSource),
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getter_AddRefs(gBookmarksDataSource));
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if (NS_FAILED(rv)) {
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return rv;
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}
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}
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if (NULL == gRDF) {
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// get the RDF service
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rv = nsServiceManager::GetService(NS_IRDFSERVICE_PROGID,
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NS_GET_IID(nsIRDFService),
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getter_AddRefs(gRDF));
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if (NS_FAILED(rv)) {
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return rv;
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}
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}
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if (NULL == gRDFCU) {
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// get the RDF service
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rv = nsServiceManager::GetService(NS_ICONTAINERUTILS_PROGID,
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NS_GET_IID(nsIRDFContainerUtils),
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getter_AddRefs(gRDFCU));
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if (NS_FAILED(rv)) {
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return rv;
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}
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}
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// init the properties
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// find the nsIRDFResource for the bookmarks
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if (NULL == kNC_BookmarksRoot) {
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rv = gRDF->GetResource(BOOKMARKS_URI,
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getter_AddRefs(kNC_BookmarksRoot));
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if (NS_FAILED(rv)) {
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return rv;
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}
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}
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if (NULL == kNC_Name) {
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rv = gRDF->GetResource("http://home.netscape.com/NC-rdf#Name",
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getter_AddRefs(kNC_Name));
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if (NS_FAILED(rv)) {
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return rv;
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}
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}
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if (NULL == kNC_URL) {
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rv = gRDF->GetResource("http://home.netscape.com/NC-rdf#URL",
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getter_AddRefs(kNC_URL));
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if (NS_FAILED(rv)) {
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return rv;
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}
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}
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if (NULL == kNC_Folder) {
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rv = gRDF->GetResource("http://home.netscape.com/NC-rdf#Folder",
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getter_AddRefs(kNC_Folder));
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if (NS_FAILED(rv)) {
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return rv;
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}
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}
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if (NULL == kRDF_type) {
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rv = gRDF->GetResource("http://home.netscape.com/NC-rdf#type",
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getter_AddRefs(kRDF_type));
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if (NS_FAILED(rv)) {
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return rv;
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}
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}
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rdf_inited = PR_TRUE;
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return rv;
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}
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void rdf_recursiveResourceTraversal(nsCOMPtr<nsIRDFResource> currentResource)
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{
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nsresult rv;
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PRBool result;
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const PRUnichar *textForNode = NULL;
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nsCOMPtr<nsISupports> supportsResult;
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nsCOMPtr<nsIRDFNode> node;
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nsCOMPtr<nsIRDFLiteral> literal;
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nsCOMPtr<nsIRDFResource> childResource;
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nsCOMPtr<nsIRDFContainer> container;
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nsCOMPtr<nsISimpleEnumerator> elements;
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// ASSERT(NULL != gRDFCU)
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rv = gRDFCU->IsContainer(gBookmarksDataSource, currentResource,
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&result);
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if (result) {
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// It's a folder
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printf("FOLDER:\n");
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rdf_printArcLabels(currentResource);
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// see if it has a name target
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rv = gBookmarksDataSource->GetTarget(currentResource,
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kNC_Name, true,
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getter_AddRefs(node));
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if (NS_SUCCEEDED(rv)) {
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// if so, make sure it's an nsIRDFLiteral
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rv = node->QueryInterface(NS_GET_IID(nsIRDFLiteral),
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getter_AddRefs(literal));
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if (NS_SUCCEEDED(rv)) {
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rv = literal->GetValueConst(&textForNode);
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printf("folder: %S\n", textForNode);
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}
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else {
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printf("recursiveResourceTraversal: node is not an nsIRDFLiteral.\n");
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}
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}
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else {
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printf("recursiveResourceTraversal: can't get name from currentResource.\n");
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}
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// get a container in order to recurr
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rv = nsComponentManager::CreateInstance(NS_IRDFCONTAINER_PROGID,
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nsnull,
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NS_GET_IID(nsIRDFContainer),
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getter_AddRefs(container));
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if (NS_FAILED(rv)) {
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printf("recursiveResourceTraversal: can't get a new container\n");
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return;
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}
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rv = container->Init(gBookmarksDataSource, currentResource);
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if (NS_FAILED(rv)) {
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printf("recursiveResourceTraversal: can't init container\n");
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return;
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}
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// go over my children
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rv = container->GetElements(getter_AddRefs(elements));
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if (NS_FAILED(rv)) {
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printf("recursiveResourceTraversal: can't get elements from folder\n");
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return;
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}
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rv = elements->HasMoreElements(&result);
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if (NS_FAILED(rv)) {
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printf("recursiveResourceTraversal: folder %s has no children.\n",
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textForNode);
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return;
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}
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while (result) {
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rv = elements->GetNext(getter_AddRefs(supportsResult));
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if (NS_FAILED(rv)) {
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printf("Exception: Can't get next from enumerator.\n");
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return;
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}
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// make sure it's an RDFResource
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rv = supportsResult->QueryInterface(NS_GET_IID(nsIRDFResource),
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getter_AddRefs(childResource));
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if (NS_FAILED(rv)) {
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printf("Exception: next from enumerator is not an nsIRDFResource.\n");
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return;
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}
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rdf_recursiveResourceTraversal(childResource);
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rv = elements->HasMoreElements(&result);
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if (NS_FAILED(rv)) {
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printf("Exception: can't tell if we have more elements.\n");
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return;
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}
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}
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}
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else {
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// It's a bookmark
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printf("BOOKMARK:\n");
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rdf_printArcLabels(currentResource);
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// see if it has a URL target
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rv = gBookmarksDataSource->GetTarget(currentResource,
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kNC_URL, true,
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getter_AddRefs(node));
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if (NS_FAILED(rv)) {
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printf("recursiveResourceTraversal: can't get url from currentResource\n");
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return;
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}
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// if so, make sure it's an nsIRDFLiteral
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rv = node->QueryInterface(NS_GET_IID(nsIRDFLiteral),
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getter_AddRefs(literal));
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if (NS_FAILED(rv)) {
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printf("recursiveResourceTraversal: node is not an nsIRDFLiteral.\n");
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return;
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}
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// get the value of the literal
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rv = literal->GetValueConst(&textForNode);
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if (NS_FAILED(rv)) {
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printf("recursiveResourceTraversal: node doesn't have a value.\n");
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return;
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}
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printf("\turl: %S\n", textForNode);
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}
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}
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void rdf_printArcLabels(nsCOMPtr<nsIRDFResource> currentResource)
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{
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nsCOMPtr<nsISimpleEnumerator> labels;
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nsCOMPtr<nsISupports> supportsResult;
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nsCOMPtr<nsIRDFResource> resourceResult;
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nsresult rv;
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PRBool result;
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const char *arcLabel;
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const char *currentResourceValue;
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rv = currentResource->GetValueConst(¤tResourceValue);
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if (NS_SUCCEEDED(rv)) {
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printf("resource: %s\n", currentResourceValue);
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}
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else {
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printf("printArcLabels: can't get value from current resource.\n");
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}
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rv = gBookmarksDataSource->ArcLabelsOut(currentResource,
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getter_AddRefs(labels));
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if (NS_FAILED(rv)) {
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printf("printArcLabels: currentResource has no outgoing arcs.\n");
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return;
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}
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rv = labels->HasMoreElements(&result);
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if (NS_FAILED(rv)) {
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printf("printArcLabels: can't get elements from currentResource's enum.\n");
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return;
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}
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while (result) {
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rv = labels->GetNext(getter_AddRefs(supportsResult));
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if (NS_FAILED(rv)) {
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printf("printArcLabels: Can't get next arc from enumerator.\n");
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return;
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}
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// make sure it's an RDFResource
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rv = supportsResult->QueryInterface(NS_GET_IID(nsIRDFResource),
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getter_AddRefs(resourceResult));
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if (NS_SUCCEEDED(rv)) {
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rv = resourceResult->GetValueConst(&arcLabel);
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if (NS_SUCCEEDED(rv)) {
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printf("\tarc label: %s\n", arcLabel);
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}
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else {
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printf("printArcLabels: can't get value from current arc.\n");
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}
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}
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else {
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printf("printArcLabels: next arc from enumerator is not an nsIRDFResource.\n");
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}
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rv = labels->HasMoreElements(&result);
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if (NS_FAILED(rv)) {
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printf("printArcLabels: can't get elements from currentResource's enum.\n");
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return;
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}
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}
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}
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nsresult rdf_getChildAt(int index, nsIRDFResource *theParent,
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nsIRDFResource **retval)
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{
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// Since there's no getChildAt type thing in RDF, we just get an
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// enumeration and get the indexth child.
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nsCOMPtr<nsIRDFResource> parent = theParent;
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nsCOMPtr<nsIRDFContainer> container;
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nsCOMPtr<nsISimpleEnumerator> elements;
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nsCOMPtr<nsISupports> supportsResult;
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nsCOMPtr<nsIRDFResource> childResource;
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nsresult rv;
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PRBool result, hasChildAtIndex = PR_FALSE;
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*retval = NULL;
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PRInt32 i = 0;
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rv = gRDFCU->IsContainer(gBookmarksDataSource, parent,
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&result);
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if (NS_FAILED(rv)) {
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return rv;
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}
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if (PR_FALSE == result) {
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return NS_OK;
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}
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rv = nsComponentManager::CreateInstance(NS_IRDFCONTAINER_PROGID,
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nsnull,
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NS_GET_IID(nsIRDFContainer),
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getter_AddRefs(container));
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if (NS_FAILED(rv)) {
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return rv;
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}
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rv = container->Init(gBookmarksDataSource, parent);
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if (NS_FAILED(rv)) {
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return rv;
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}
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rv = container->GetElements(getter_AddRefs(elements));
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if (NS_FAILED(rv)) {
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return rv;
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}
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rv = elements->HasMoreElements(&result);
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if (NS_FAILED(rv)) {
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return rv;
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}
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while (result) {
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rv = elements->GetNext(getter_AddRefs(supportsResult));
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if (NS_FAILED(rv)) {
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return rv;
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}
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if (index == i) {
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hasChildAtIndex = PR_TRUE;
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break;
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}
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i++;
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rv = elements->HasMoreElements(&result);
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if (NS_FAILED(rv)) {
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return rv;
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}
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}
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if (hasChildAtIndex) {
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rv = supportsResult->QueryInterface(NS_GET_IID(nsIRDFResource),
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getter_AddRefs(childResource));
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if (NS_FAILED(rv)) {
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return rv;
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}
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*retval = childResource;
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}
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return NS_OK;
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}
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nsresult rdf_getChildCount(nsIRDFResource *theParent, PRInt32 *count)
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{
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nsresult rv;
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nsCOMPtr<nsIRDFResource> parent = theParent;
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nsCOMPtr<nsIRDFContainer> container;
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PRBool result;
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*count = 0;
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rv = gRDFCU->IsContainer(gBookmarksDataSource, parent,
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&result);
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if (NS_FAILED(rv)) {
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return rv;
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}
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if (PR_FALSE == result) {
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return NS_OK;
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}
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rv = nsComponentManager::CreateInstance(NS_IRDFCONTAINER_PROGID,
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nsnull,
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NS_GET_IID(nsIRDFContainer),
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getter_AddRefs(container));
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if (NS_FAILED(rv)) {
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return rv;
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}
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rv = container->Init(gBookmarksDataSource, parent);
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if (NS_FAILED(rv)) {
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return rv;
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}
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rv = container->GetCount(count);
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if (NS_FAILED(rv)) {
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return rv;
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}
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return NS_OK;
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}
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nsresult rdf_getIndexOfChild(nsIRDFResource *theParent,
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nsIRDFResource *theChild,
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PRInt32 *index)
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{
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nsCOMPtr<nsIRDFResource> parent = theParent;
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nsCOMPtr<nsIRDFResource> child = theChild;
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nsCOMPtr<nsIRDFContainer> container;
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nsCOMPtr<nsISimpleEnumerator> elements;
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nsCOMPtr<nsISupports> supportsResult;
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nsresult rv;
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PRBool result;
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*index = -1;
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PRInt32 i = 0;
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rv = gRDFCU->IsContainer(gBookmarksDataSource, parent,
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&result);
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if (NS_FAILED(rv)) {
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return rv;
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}
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if (PR_FALSE == result) {
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return NS_OK;
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}
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rv = nsComponentManager::CreateInstance(NS_IRDFCONTAINER_PROGID,
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nsnull,
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NS_GET_IID(nsIRDFContainer),
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getter_AddRefs(container));
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if (NS_FAILED(rv)) {
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return rv;
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}
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rv = container->Init(gBookmarksDataSource, parent);
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if (NS_FAILED(rv)) {
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return rv;
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}
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rv = container->GetElements(getter_AddRefs(elements));
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if (NS_FAILED(rv)) {
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return rv;
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}
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rv = elements->HasMoreElements(&result);
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if (NS_FAILED(rv)) {
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return rv;
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}
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while (result) {
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rv = elements->GetNext(getter_AddRefs(supportsResult));
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if (NS_FAILED(rv)) {
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return rv;
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}
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if (supportsResult == child) {
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*index = i;
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rv = NS_OK;
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break;
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}
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i++;
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rv = elements->HasMoreElements(&result);
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if (NS_FAILED(rv)) {
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return rv;
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}
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}
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return rv;
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}
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