mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-30 21:55:31 +00:00
49993ef1f0
(not complete, not yet part of the build)
451 lines
14 KiB
C++
451 lines
14 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 Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#include "nscore.h"
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#include "nsCRT.h"
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#include "nsCOMPtr.h"
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#include "nsIRDFService.h"
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#include "nsRDFCID.h"
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#include "nsIRDFDataSource.h"
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#include "rdf.h"
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#include "nsIServiceManager.h"
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#include "nsEnumeratorUtils.h"
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#include "nsXPIDLString.h"
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#ifdef NS_DEBUG
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#include "stdio.h"
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#endif
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#define NC_RDF_Name NC_NAMESPACE_URI "Name"
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#define NC_RDF_Value NC_NAMESPACE_URI "Value"
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#define NC_RDF_Child NC_NAMESPACE_URI "child"
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static NS_DEFINE_CID(kRDFServiceCID, NS_RDFSERVICE_CID);
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class nsRDFDataSourceDataSource : public nsIRDFDataSource {
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public:
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NS_DECL_ISUPPORTS
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nsRDFDataSourceDataSource();
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virtual ~nsRDFDataSourceDataSource();
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/* void Init (in string uri); */
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NS_IMETHOD Init(const char *uri);
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/* readonly attribute string URI; */
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NS_IMETHOD GetURI(char * *aURI);
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/* nsIRDFResource GetSource (in nsIRDFResource aProperty, in nsIRDFNode aTarget, in boolean aTruthValue); */
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NS_IMETHOD GetSource(nsIRDFResource *aProperty, nsIRDFNode *aTarget, PRBool aTruthValue, nsIRDFResource **_retval);
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/* nsISimpleEnumerator GetSources (in nsIRDFResource aProperty, in nsIRDFNode aTarget, in boolean aTruthValue); */
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NS_IMETHOD GetSources(nsIRDFResource *aProperty, nsIRDFNode *aTarget, PRBool aTruthValue, nsISimpleEnumerator **_retval);
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/* nsIRDFNode GetTarget (in nsIRDFResource aSource, in nsIRDFResource aProperty, in boolean aTruthValue); */
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NS_IMETHOD GetTarget(nsIRDFResource *aSource, nsIRDFResource *aProperty, PRBool aTruthValue, nsIRDFNode **_retval);
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/* nsISimpleEnumerator GetTargets (in nsIRDFResource aSource, in nsIRDFResource aProperty, in boolean aTruthValue); */
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NS_IMETHOD GetTargets(nsIRDFResource *aSource, nsIRDFResource *aProperty, PRBool aTruthValue, nsISimpleEnumerator **_retval);
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/* void Assert (in nsIRDFResource aSource, in nsIRDFResource aProperty, in nsIRDFNode aTarget, in boolean aTruthValue); */
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NS_IMETHOD Assert(nsIRDFResource *aSource, nsIRDFResource *aProperty, nsIRDFNode *aTarget, PRBool aTruthValue);
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/* void Unassert (in nsIRDFResource aSource, in nsIRDFResource aProperty, in nsIRDFNode aTarget); */
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NS_IMETHOD Unassert(nsIRDFResource *aSource, nsIRDFResource *aProperty, nsIRDFNode *aTarget);
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/* boolean HasAssertion (in nsIRDFResource aSource, in nsIRDFResource aProperty, in nsIRDFNode aTarget, in boolean aTruthValue); */
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NS_IMETHOD HasAssertion(nsIRDFResource *aSource, nsIRDFResource *aProperty, nsIRDFNode *aTarget, PRBool aTruthValue, PRBool *_retval);
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/* void AddObserver (in nsIRDFObserver aObserver); */
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NS_IMETHOD AddObserver(nsIRDFObserver *aObserver);
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/* void RemoveObserver (in nsIRDFObserver aObserver); */
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NS_IMETHOD RemoveObserver(nsIRDFObserver *aObserver);
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/* nsISimpleEnumerator ArcLabelsIn (in nsIRDFNode aNode); */
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NS_IMETHOD ArcLabelsIn(nsIRDFNode *aNode, nsISimpleEnumerator **_retval);
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/* nsISimpleEnumerator ArcLabelsOut (in nsIRDFResource aSource); */
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NS_IMETHOD ArcLabelsOut(nsIRDFResource *aSource, nsISimpleEnumerator **_retval);
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/* nsISimpleEnumerator GetAllResources (); */
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NS_IMETHOD GetAllResources(nsISimpleEnumerator **_retval);
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/* void Flush (); */
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NS_IMETHOD Flush();
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/* nsIEnumerator GetAllCommands (in nsIRDFResource aSource); */
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NS_IMETHOD GetAllCommands(nsIRDFResource *aSource, nsIEnumerator **_retval);
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/* boolean IsCommandEnabled (in nsISupportsArray aSources, in nsIRDFResource aCommand, in nsISupportsArray aArguments); */
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NS_IMETHOD IsCommandEnabled(nsISupportsArray * aSources, nsIRDFResource *aCommand, nsISupportsArray * aArguments, PRBool *_retval);
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/* void DoCommand (in nsISupportsArray aSources, in nsIRDFResource aCommand, in nsISupportsArray aArguments); */
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NS_IMETHOD DoCommand(nsISupportsArray * aSources, nsIRDFResource *aCommand, nsISupportsArray * aArguments);
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private:
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char *mURI;
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nsIRDFDataSource* mDataSource;
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static nsIRDFResource* kNC_Name;
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static nsIRDFResource* kNC_Value;
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static nsIRDFResource* kNC_Child;
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};
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nsIRDFResource* nsRDFDataSourceDataSource::kNC_Name=nsnull;
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nsIRDFResource* nsRDFDataSourceDataSource::kNC_Value=nsnull;
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nsIRDFResource* nsRDFDataSourceDataSource::kNC_Child=nsnull;
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nsRDFDataSourceDataSource::nsRDFDataSourceDataSource():
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mURI(nsnull),
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mDataSource(nsnull)
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{
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NS_INIT_REFCNT();
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}
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nsRDFDataSourceDataSource::~nsRDFDataSourceDataSource()
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{
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nsCRT::free(mURI);
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}
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NS_IMPL_ISUPPORTS(nsRDFDataSourceDataSource, nsIRDFDataSource::GetIID());
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/* void Init (in string uri); */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::Init(const char *uri)
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{
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nsresult rv;
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if (mURI) nsCRT::free(mURI);
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mURI = nsCRT::strdup(uri);
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// get RDF resources
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NS_WITH_SERVICE(nsIRDFService, rdf, kRDFServiceCID, &rv);
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if (!kNC_Name) {
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rdf->GetResource(NC_RDF_Name, &kNC_Name);
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rdf->GetResource(NC_RDF_Child, &kNC_Child);
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rdf->GetResource(NC_RDF_Value, &kNC_Value);
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}
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#ifdef DEBUG_alecf
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printf("nsRDFDataSourceDataSource::Init(%s)\n", uri);
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#endif
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return NS_OK;
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}
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/* readonly attribute string URI; */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::GetURI(char * *aURI)
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{
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#ifdef DEBUG_alecf
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printf("nsRDFDataSourceDataSource::GetURI()\n");
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#endif
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*aURI = nsCRT::strdup(mURI);
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return NS_OK;
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}
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/* nsIRDFResource GetSource (in nsIRDFResource aProperty, in nsIRDFNode aTarget, in boolean aTruthValue); */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::GetSource(nsIRDFResource *aProperty,
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nsIRDFNode *aTarget,
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PRBool aTruthValue,
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nsIRDFResource **_retval)
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{
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return NS_RDF_NO_VALUE;
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}
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/* nsISimpleEnumerator GetSources (in nsIRDFResource aProperty, in nsIRDFNode aTarget, in boolean aTruthValue); */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::GetSources(nsIRDFResource *aProperty,
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nsIRDFNode *aTarget,
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PRBool aTruthValue,
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nsISimpleEnumerator **_retval)
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{
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return NS_RDF_NO_VALUE;
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}
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/* nsIRDFNode GetTarget (in nsIRDFResource aSource, in nsIRDFResource aProperty, in boolean aTruthValue); */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::GetTarget(nsIRDFResource *aSource,
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nsIRDFResource *aProperty,
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PRBool aTruthValue,
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nsIRDFNode **_retval)
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{
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#ifdef DEBUG_alecf
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nsXPIDLCString sourceval;
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nsXPIDLCString propval;
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aSource->GetValue(getter_Copies(sourceval));
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aProperty->GetValue(getter_Copies(propval));
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printf("GetTarget(%s, %s,..)\n", (const char*)sourceval,
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(const char*)propval);
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#endif
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return NS_OK;
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}
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/* nsISimpleEnumerator GetTargets (in nsIRDFResource aSource, in nsIRDFResource aProperty, in boolean aTruthValue); */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::GetTargets(nsIRDFResource *aSource,
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nsIRDFResource *aProperty,
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PRBool aTruthValue,
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nsISimpleEnumerator **_retval)
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{
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#ifdef DEBUG_alecf
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nsXPIDLCString sourceval;
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nsXPIDLCString propval;
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aSource->GetValue(getter_Copies(sourceval));
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aProperty->GetValue(getter_Copies(propval));
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printf("GetTargets(%s, %s,..)\n", (const char*)sourceval,
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(const char*)propval);
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#endif
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nsresult rv;
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PRBool isProp;
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nsCOMPtr<nsISupportsArray> arcs;
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nsISimpleEnumerator *enumerator;
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if (NS_SUCCEEDED(aProperty.EqualsResource(kNC_Child, &isProp)) &&
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isProp) {
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// here we need to determine if we need to extract out the source
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// or use aSource?
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if (!PL_strcmp(sourceval, "dsresource:", 11)) {
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// somehow get the source
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rv = mDataSource->ArcLabelsOut(realsource, &enumerator);
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} else {
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rv = mDataSource->ArcLabelsOut(aSource, &enumerator);
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}
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// enumerate all the children and create the composite resources
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PRBool hasMoreArcs=PR_FALSE;
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rv = enumerator->hasMoreElements(&hasMoreArcs);
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while (NS_SUCCEEDED(rv) && hasMoreArcs) {
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// get the next arc
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nsCOMPtr<nsISupports> arcSupports;
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rv = enumerator->GetNext(getter_AddRefs(arcSupports));
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nsCOMPtr<nsIRDFResource> arc = do_QueryInterface(arcSupports, &rv);
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// get all the resources on the ends of the arc arcs
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nsCOMPtr<nsISimpleEnumerator> targetEnumerator;
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rv = mDataSource->GetTargets(aSource, element, PR_TRUE,
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getter_AddRefs(targetEnumerator));
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PRBool hasMoreTargets;
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rv = targetEnumerator->hasMoreElements(&hasMoreTargets);
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while (NS_SUCCEEDED(rv) && hasMoreTargets) {
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// get the next target
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nsCOMPtr<nsISupports> targetSupports;
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rv = enumerator->GetNext(getter_AddRefs(targetSupports));
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nsCOMPtr<nsIRDFResource> target=do_QueryInterface(targetSupports, &rv);
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// now we have an (arc, target) tuple that will be our node
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// arc will become #Name
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// target will become #Value
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#ifdef DEBUG_alecf
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nsXPIDLString arcValue;
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nsXPIDLString targetValue;
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arc->GetValue(getter_Copies(arcValue));
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target->GetValue(getter_Copies(targetValue));
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printf("#child of %s:\n\t%s = %s\n",
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(const char*)sourceval
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#endif
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}
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rv = enumerator->hasMoreElements(&hasMoreArcs);
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}
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nsIRDFResource *res = CreateCompositeResource(aSource, aProperty);
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} else if (NS_SUCCEEDED(aProperty.EqualsResource(kNC_Name, &isProp)) &&
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isProp) {
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if (!PL_strncmp(sourceval, "dsresource:", 11) {
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// extract out the name
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}
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} else if (NS_SUCCEEDED(aProperty.EqualsResource(kNC_Value, &isProp)) &&
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isProp) {
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} else {
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rv = NS_NewISupportsArray(getter_AddRefs(arcs));
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if (NS_FAILED(rv)) return rv;
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nsArrayEnumerator* cursor =
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new nsArrayEnumerator(arcs);
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if (!cursor) return NS_ERROR_OUT_OF_MEMORY;
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*_retval = cursor;
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NS_ADDREF(*_retval);
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}
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return NS_OK;
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}
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/* void Assert (in nsIRDFResource aSource, in nsIRDFResource aProperty, in nsIRDFNode aTarget, in boolean aTruthValue); */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::Assert(nsIRDFResource *aSource, nsIRDFResource *aProperty, nsIRDFNode *aTarget, PRBool aTruthValue)
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{
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return NS_RDF_NO_VALUE;
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}
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/* void Unassert (in nsIRDFResource aSource, in nsIRDFResource aProperty, in nsIRDFNode aTarget); */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::Unassert(nsIRDFResource *aSource, nsIRDFResource *aProperty, nsIRDFNode *aTarget)
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{
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return NS_RDF_NO_VALUE;
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}
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/* boolean HasAssertion (in nsIRDFResource aSource, in nsIRDFResource aProperty, in nsIRDFNode aTarget, in boolean aTruthValue); */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::HasAssertion(nsIRDFResource *aSource, nsIRDFResource *aProperty, nsIRDFNode *aTarget, PRBool aTruthValue, PRBool *_retval)
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{
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return NS_RDF_NO_VALUE;
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}
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/* void AddObserver (in nsIRDFObserver aObserver); */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::AddObserver(nsIRDFObserver *aObserver)
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{
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return NS_RDF_NO_VALUE;
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}
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/* void RemoveObserver (in nsIRDFObserver aObserver); */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::RemoveObserver(nsIRDFObserver *aObserver)
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{
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return NS_RDF_NO_VALUE;
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}
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/* nsISimpleEnumerator ArcLabelsIn (in nsIRDFNode aNode); */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::ArcLabelsIn(nsIRDFNode *aNode, nsISimpleEnumerator **_retval)
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{
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return NS_RDF_NO_VALUE;
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}
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/* nsISimpleEnumerator ArcLabelsOut (in nsIRDFResource aSource); */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::ArcLabelsOut(nsIRDFResource *aSource,
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nsISimpleEnumerator **_retval)
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{
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nsresult rv=NS_OK;
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nsCOMPtr<nsISupportsArray> arcs;
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rv = NS_NewISupportsArray(getter_AddRefs(arcs));
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if (NS_FAILED(rv)) return rv;
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nsXPIDLCString sourceval;
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aSource->GetValue(getter_Copies(sourceval));
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#ifdef DEBUG_alecf
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printf("ArcLabelsOut(%s)\n", (const char*)sourceval);
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#endif
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// this is a terrible ugly hack, but it works.
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// set the datasource if the URI begins with rdf:
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if (!PL_strncmp((const char*)sourceval, "rdf:", 4)) {
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#ifdef DEBUG_alecf
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printf("Ahah! This is a datasource node. Setting the datasource..");
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#endif
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NS_WITH_SERVICE(nsIRDFService, rdf, kRDFServiceCID, &rv);
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rv = rdf->GetDataSource((const char*)sourceval, &mDataSource);
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#ifdef DEBUG_alecf
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printf("done.\n");
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#endif
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} else {
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arcs->AppendElement(kNC_Name);
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arcs->AppendElement(kNC_Value);
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arcs->AppendElement(kNC_Child);
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}
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nsArrayEnumerator* cursor =
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new nsArrayEnumerator(arcs);
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if (!cursor) return NS_ERROR_OUT_OF_MEMORY;
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NS_ADDREF(cursor);
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*_retval = cursor;
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return NS_OK;
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}
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/* nsISimpleEnumerator GetAllResources (); */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::GetAllResources(nsISimpleEnumerator **_retval)
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{
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return NS_RDF_NO_VALUE;
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}
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/* void Flush (); */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::Flush()
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{
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return NS_RDF_NO_VALUE;
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}
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/* nsIEnumerator GetAllCommands (in nsIRDFResource aSource); */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::GetAllCommands(nsIRDFResource *aSource, nsIEnumerator **_retval)
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{
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return NS_RDF_NO_VALUE;
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}
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/* boolean IsCommandEnabled (in nsISupportsArray aSources, in nsIRDFResource aCommand, in nsISupportsArray aArguments); */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::IsCommandEnabled(nsISupportsArray * aSources, nsIRDFResource *aCommand, nsISupportsArray * aArguments, PRBool *_retval)
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{
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return NS_RDF_NO_VALUE;
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}
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/* void DoCommand (in nsISupportsArray aSources, in nsIRDFResource aCommand, in nsISupportsArray aArguments); */
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NS_IMETHODIMP
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nsRDFDataSourceDataSource::DoCommand(nsISupportsArray * aSources, nsIRDFResource *aCommand, nsISupportsArray * aArguments)
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{
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return NS_RDF_NO_VALUE;
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}
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nsresult
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NS_NewRDFDataSourceDataSource(nsISupports *, const nsIID& iid,
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void ** result)
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{
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nsRDFDataSourceDataSource * dsds = new nsRDFDataSourceDataSource();
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return dsds->QueryInterface(iid, result);
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}
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