139 lines
4.5 KiB
C++
139 lines
4.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is the Mozilla XTF project.
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*
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* The Initial Developer of the Original Code is
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* Alex Fritze.
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* Portions created by the Initial Developer are Copyright (C) 2004
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Alex Fritze <alex@croczilla.com> (original author)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsCOMPtr.h"
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#include "nsINodeInfo.h"
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#include "nsIServiceManager.h"
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#include "nsIXTFElement.h"
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#include "nsIXTFElementFactory.h"
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#include "nsIXTFService.h"
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#include "nsInterfaceHashtable.h"
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#include "nsString.h"
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#include "nsXTFElementWrapper.h"
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////////////////////////////////////////////////////////////////////////
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// nsXTFService class
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class nsXTFService : public nsIXTFService
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{
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protected:
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friend nsresult NS_NewXTFService(nsIXTFService** aResult);
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nsXTFService();
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public:
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// nsISupports interface
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NS_DECL_ISUPPORTS
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// nsIXTFService interface
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nsresult CreateElement(nsIContent** aResult, nsINodeInfo* aNodeInfo);
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private:
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nsInterfaceHashtable<nsUint32HashKey, nsIXTFElementFactory> mFactoryHash;
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};
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//----------------------------------------------------------------------
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// implementation:
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nsXTFService::nsXTFService()
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{
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mFactoryHash.Init(); // XXX this can fail. move to Init()
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}
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nsresult
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NS_NewXTFService(nsIXTFService** aResult)
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{
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NS_PRECONDITION(aResult != nsnull, "null ptr");
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if (! aResult)
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return NS_ERROR_NULL_POINTER;
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nsXTFService* result = new nsXTFService();
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if (! result)
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return NS_ERROR_OUT_OF_MEMORY;
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NS_ADDREF(result);
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*aResult = result;
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return NS_OK;
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}
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//----------------------------------------------------------------------
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// nsISupports methods
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NS_IMPL_ISUPPORTS1(nsXTFService, nsIXTFService)
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//----------------------------------------------------------------------
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// nsIXTFService methods
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nsresult
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nsXTFService::CreateElement(nsIContent** aResult, nsINodeInfo* aNodeInfo)
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{
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nsCOMPtr<nsIXTFElementFactory> factory;
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// Check if we have an xtf factory for the given namespaceid in our cache:
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if (!mFactoryHash.Get(aNodeInfo->NamespaceID(), getter_AddRefs(factory))) {
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// No. See if there is one registered with the component manager:
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nsCAutoString xtf_contract_id(NS_XTF_ELEMENT_FACTORY_CONTRACTID_PREFIX);
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nsAutoString uri;
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aNodeInfo->GetNamespaceURI(uri);
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AppendUTF16toUTF8(uri, xtf_contract_id);
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#ifdef DEBUG_xtf_verbose
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printf("Testing for XTF factory at %s\n", xtf_contract_id.get());
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#endif
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factory = do_GetService(xtf_contract_id.get());
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if (factory) {
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#ifdef DEBUG
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printf("We've got an XTF factory: %s \n", xtf_contract_id.get());
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#endif
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// Put into hash:
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mFactoryHash.Put(aNodeInfo->NamespaceID(), factory);
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}
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}
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if (!factory) return NS_ERROR_FAILURE;
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// We have an xtf factory. Now try to create an element for the given tag name:
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nsCOMPtr<nsIXTFElement> elem;
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nsAutoString tagName;
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aNodeInfo->GetName(tagName);
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factory->CreateElement(tagName, getter_AddRefs(elem));
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if (!elem) return NS_ERROR_FAILURE;
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// We've got an xtf element. Create a wrapper for it:
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return NS_NewXTFElementWrapper(elem, aNodeInfo, aResult);
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}
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