/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* ***** 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 mozilla.org code. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * Original Author: David W. Hyatt (hyatt@netscape.com) * * 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 ***** */ #include "nsCOMPtr.h" #include "nsChromeUIDataSource.h" #include "nsIRDFDataSource.h" #include "nsIRDFObserver.h" #include "nsIRDFRemoteDataSource.h" #include "nsCRT.h" #include "rdf.h" #include "nsIServiceManager.h" #include "nsIRDFService.h" #include "nsRDFCID.h" #include "nsIRDFResource.h" #include "nsIRDFDataSource.h" #include "nsIRDFContainer.h" #include "nsHashtable.h" #include "nsString.h" #include "nsXPIDLString.h" #include "nsISimpleEnumerator.h" #include "nsNetUtil.h" #include "nsISupportsArray.h" #include "nsIIOService.h" //////////////////////////////////////////////////////////////////////////////// static NS_DEFINE_CID(kRDFServiceCID, NS_RDFSERVICE_CID); nsChromeUIDataSource::nsChromeUIDataSource(nsIRDFDataSource* aComposite) { mComposite = aComposite; mComposite->AddObserver(this); nsresult rv; rv = CallGetService(kRDFServiceCID, &mRDFService); NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get RDF service"); mRDFService->RegisterDataSource(this, PR_TRUE); } nsChromeUIDataSource::~nsChromeUIDataSource() { mRDFService->UnregisterDataSource(this); NS_IF_RELEASE(mRDFService); } // we require a special implementation of Release, which knows about // a circular strong reference NS_IMPL_ADDREF(nsChromeUIDataSource) NS_IMPL_QUERY_INTERFACE2(nsChromeUIDataSource, nsIRDFDataSource, nsIRDFObserver) NS_IMETHODIMP_(nsrefcnt) nsChromeUIDataSource::Release() { NS_PRECONDITION(PRInt32(mRefCnt) > 0, "duplicate release"); --mRefCnt; NS_LOG_RELEASE(this, mRefCnt, "nsChromeUIDataSource"); // delete if the last reference is our strong circular reference if (mComposite && PRInt32(mRefCnt) == 1) { mComposite->RemoveObserver(this); return 0; } else if (mRefCnt == 0) { delete this; return 0; } return mRefCnt; } //---------------------------------------------------------------------- // // nsIRDFDataSource interface // NS_IMETHODIMP nsChromeUIDataSource::GetURI(char** aURI) { *aURI = nsCRT::strdup("rdf:chrome"); if (! *aURI) return NS_ERROR_OUT_OF_MEMORY; return NS_OK; } NS_IMETHODIMP nsChromeUIDataSource::GetSource(nsIRDFResource* property, nsIRDFNode* target, PRBool tv, nsIRDFResource** source) { return mComposite->GetSource(property, target, tv, source); } NS_IMETHODIMP nsChromeUIDataSource::GetSources(nsIRDFResource* aProperty, nsIRDFNode* aTarget, PRBool aTruthValue, nsISimpleEnumerator** aResult) { return mComposite->GetSources(aProperty, aTarget, aTruthValue, aResult); } NS_IMETHODIMP nsChromeUIDataSource::GetTarget(nsIRDFResource* aSource, nsIRDFResource* aProperty, PRBool aTruthValue, nsIRDFNode** aResult) { return mComposite->GetTarget(aSource, aProperty, aTruthValue, aResult); } NS_IMETHODIMP nsChromeUIDataSource::GetTargets(nsIRDFResource* aSource, nsIRDFResource* aProperty, PRBool aTruthValue, nsISimpleEnumerator** aResult) { return mComposite->GetTargets(aSource, aProperty, aTruthValue, aResult); } NS_IMETHODIMP nsChromeUIDataSource::Assert(nsIRDFResource* aSource, nsIRDFResource* aProperty, nsIRDFNode* aTarget, PRBool aTruthValue) { return mComposite->Assert(aSource, aProperty, aTarget, aTruthValue); } NS_IMETHODIMP nsChromeUIDataSource::Unassert(nsIRDFResource* aSource, nsIRDFResource* aProperty, nsIRDFNode* aTarget) { return mComposite->Unassert(aSource, aProperty, aTarget); } NS_IMETHODIMP nsChromeUIDataSource::Change(nsIRDFResource* aSource, nsIRDFResource* aProperty, nsIRDFNode* aOldTarget, nsIRDFNode* aNewTarget) { return mComposite->Change(aSource, aProperty, aOldTarget, aNewTarget); } NS_IMETHODIMP nsChromeUIDataSource::Move(nsIRDFResource* aOldSource, nsIRDFResource* aNewSource, nsIRDFResource* aProperty, nsIRDFNode* aTarget) { return mComposite->Move(aOldSource, aNewSource, aProperty, aTarget); } NS_IMETHODIMP nsChromeUIDataSource::HasAssertion(nsIRDFResource* aSource, nsIRDFResource* aProperty, nsIRDFNode* aTarget, PRBool aTruthValue, PRBool* aResult) { return mComposite->HasAssertion(aSource, aProperty, aTarget, aTruthValue, aResult); } NS_IMETHODIMP nsChromeUIDataSource::AddObserver(nsIRDFObserver* aObserver) { NS_PRECONDITION(aObserver != nsnull, "null ptr"); if (! aObserver) return NS_ERROR_NULL_POINTER; // XXX ensure uniqueness? mObservers.AppendObject(aObserver); return NS_OK; } NS_IMETHODIMP nsChromeUIDataSource::RemoveObserver(nsIRDFObserver* aObserver) { NS_PRECONDITION(aObserver != nsnull, "null ptr"); if (! aObserver) return NS_ERROR_NULL_POINTER; mObservers.RemoveObject(aObserver); return NS_OK; } NS_IMETHODIMP nsChromeUIDataSource::HasArcIn(nsIRDFNode *aNode, nsIRDFResource *aArc, PRBool *result) { return mComposite->HasArcIn(aNode, aArc, result); } NS_IMETHODIMP nsChromeUIDataSource::HasArcOut(nsIRDFResource *aSource, nsIRDFResource *aArc, PRBool *result) { return mComposite->HasArcOut(aSource, aArc, result); } NS_IMETHODIMP nsChromeUIDataSource::ArcLabelsIn(nsIRDFNode* aTarget, nsISimpleEnumerator** aResult) { return mComposite->ArcLabelsIn(aTarget, aResult); } NS_IMETHODIMP nsChromeUIDataSource::ArcLabelsOut(nsIRDFResource* aSource, nsISimpleEnumerator** aResult) { return mComposite->ArcLabelsOut(aSource, aResult); } NS_IMETHODIMP nsChromeUIDataSource::GetAllResources(nsISimpleEnumerator** aResult) { return mComposite->GetAllResources(aResult); } NS_IMETHODIMP nsChromeUIDataSource::GetAllCmds(nsIRDFResource* source, nsISimpleEnumerator/**/** result) { return mComposite->GetAllCmds(source, result); } NS_IMETHODIMP nsChromeUIDataSource::IsCommandEnabled(nsISupportsArray/**/* aSources, nsIRDFResource* aCommand, nsISupportsArray/**/* aArguments, PRBool* aResult) { return mComposite->IsCommandEnabled(aSources, aCommand, aArguments, aResult); } NS_IMETHODIMP nsChromeUIDataSource::DoCommand(nsISupportsArray/**/* aSources, nsIRDFResource* aCommand, nsISupportsArray/**/* aArguments) { return mComposite->DoCommand(aSources, aCommand, aArguments); } NS_IMETHODIMP nsChromeUIDataSource::BeginUpdateBatch() { return mComposite->BeginUpdateBatch(); } NS_IMETHODIMP nsChromeUIDataSource::EndUpdateBatch() { return mComposite->EndUpdateBatch(); } ////////////////////////////////////////////////////////////////////// NS_IMETHODIMP nsChromeUIDataSource::OnAssert(nsIRDFDataSource* aDataSource, nsIRDFResource* aSource, nsIRDFResource* aProperty, nsIRDFNode* aTarget) { PRInt32 count = mObservers.Count(); for (PRInt32 i = count - 1; i >= 0; --i) { mObservers[i]->OnAssert(this, aSource, aProperty, aTarget); } return NS_OK; } NS_IMETHODIMP nsChromeUIDataSource::OnUnassert(nsIRDFDataSource* aDataSource, nsIRDFResource* aSource, nsIRDFResource* aProperty, nsIRDFNode* aTarget) { PRInt32 count = mObservers.Count(); for (PRInt32 i = count - 1; i >= 0; --i) { mObservers[i]->OnUnassert(aDataSource, aSource, aProperty, aTarget); } return NS_OK; } NS_IMETHODIMP nsChromeUIDataSource::OnChange(nsIRDFDataSource* aDataSource, nsIRDFResource* aSource, nsIRDFResource* aProperty, nsIRDFNode* aOldTarget, nsIRDFNode* aNewTarget) { PRInt32 count = mObservers.Count(); for (PRInt32 i = count - 1; i >= 0; --i) { mObservers[i]->OnChange(aDataSource, aSource, aProperty, aOldTarget, aNewTarget); } return NS_OK; } NS_IMETHODIMP nsChromeUIDataSource::OnMove(nsIRDFDataSource* aDataSource, nsIRDFResource* aOldSource, nsIRDFResource* aNewSource, nsIRDFResource* aProperty, nsIRDFNode* aTarget) { PRInt32 count = mObservers.Count(); for (PRInt32 i = count - 1; i >= 0; --i) { mObservers[i]->OnMove(aDataSource, aOldSource, aNewSource, aProperty, aTarget); } return NS_OK; } NS_IMETHODIMP nsChromeUIDataSource::OnBeginUpdateBatch(nsIRDFDataSource* aDataSource) { PRInt32 count = mObservers.Count(); for (PRInt32 i = count - 1; i >= 0; --i) { mObservers[i]->OnBeginUpdateBatch(aDataSource); } return NS_OK; } NS_IMETHODIMP nsChromeUIDataSource::OnEndUpdateBatch(nsIRDFDataSource* aDataSource) { PRInt32 count = mObservers.Count(); for (PRInt32 i = count - 1; i >= 0; --i) { mObservers[i]->OnEndUpdateBatch(aDataSource); } return NS_OK; } /////////////////////////////////////////////////////////////////////////////////////////// nsresult NS_NewChromeUIDataSource(nsIRDFDataSource* aComposite, nsIRDFDataSource** aResult) { NS_PRECONDITION(aResult != nsnull, "null ptr"); if (! aResult) return NS_ERROR_NULL_POINTER; nsChromeUIDataSource* ChromeUIDataSource = new nsChromeUIDataSource(aComposite); if (ChromeUIDataSource == nsnull) return NS_ERROR_OUT_OF_MEMORY; NS_ADDREF(*aResult = ChromeUIDataSource); return NS_OK; }