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 * 
 * Licensed to the Apache Software Foundation (ASF) under one
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 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
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#include "precompiled_sd.hxx"

#include "tools/ConfigurationAccess.hxx"
#include <com/sun/star/lang/XMultiServiceFactory.hpp>
#include <com/sun/star/beans/PropertyValue.hpp>
#include <com/sun/star/container/XHierarchicalNameAccess.hpp>
#include <com/sun/star/util/XChangesBatch.hpp>
#include <comphelper/processfactory.hxx>
#include <tools/diagnose_ex.h>

using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
using ::rtl::OUString;

namespace sd { namespace tools {

ConfigurationAccess::ConfigurationAccess (
    const Reference<XComponentContext>& rxContext,
    const OUString& rsRootName,
    const WriteMode eMode)
    : mxRoot()
{
    Reference<lang::XMultiComponentFactory> xFactory (rxContext->getServiceManager());
    if (xFactory.is())
    {
        Reference<lang::XMultiServiceFactory> xProvider (
            xFactory->createInstanceWithContext(
                OUString::createFromAscii("com.sun.star.configuration.ConfigurationProvider"),
                rxContext),
            UNO_QUERY);
        if (xProvider.is())
            Initialize(xProvider, rsRootName, eMode);
    }
}


ConfigurationAccess::ConfigurationAccess (
    const OUString& rsRootName,
    const WriteMode eMode)
    : mxRoot()
{
    Reference<lang::XMultiServiceFactory> xProvider (
        ::comphelper::getProcessServiceFactory()->createInstance(
            OUString::createFromAscii("com.sun.star.configuration.ConfigurationProvider")),
        UNO_QUERY);
    if (xProvider.is())
        Initialize(xProvider, rsRootName, eMode);
}


void ConfigurationAccess::Initialize (
    const Reference<lang::XMultiServiceFactory>& rxProvider,
    const OUString& rsRootName,
    const WriteMode eMode)
{
    try
    {
        Sequence<Any> aCreationArguments(3);
        aCreationArguments[0] = makeAny(beans::PropertyValue(
            OUString(RTL_CONSTASCII_USTRINGPARAM("nodepath")),
            0, 
            makeAny(rsRootName), 
            beans::PropertyState_DIRECT_VALUE));
        aCreationArguments[1] = makeAny(beans::PropertyValue(
            OUString(RTL_CONSTASCII_USTRINGPARAM("depth")),
            0, 
            makeAny((sal_Int32)-1),
            beans::PropertyState_DIRECT_VALUE));
        aCreationArguments[2] = makeAny(beans::PropertyValue(
            OUString(RTL_CONSTASCII_USTRINGPARAM("lazywrite")),
            0, 
            makeAny(true),
            beans::PropertyState_DIRECT_VALUE));
        OUString sAccessService;
        if (eMode == READ_ONLY)
            sAccessService = OUString(RTL_CONSTASCII_USTRINGPARAM(
                "com.sun.star.configuration.ConfigurationAccess"));
        else
            sAccessService = OUString(RTL_CONSTASCII_USTRINGPARAM(
                "com.sun.star.configuration.ConfigurationUpdateAccess"));
            
        mxRoot = rxProvider->createInstanceWithArguments(
            sAccessService,
            aCreationArguments);
    }
    catch (Exception&)
    {
        DBG_UNHANDLED_EXCEPTION();
    }
}


Any ConfigurationAccess::GetConfigurationNode (
    const OUString& sPathToNode)
{
    return GetConfigurationNode(
        Reference<container::XHierarchicalNameAccess>(mxRoot, UNO_QUERY),
        sPathToNode);
}


Any ConfigurationAccess::GetConfigurationNode (
    const css::uno::Reference<css::container::XHierarchicalNameAccess>& rxNode,
    const OUString& sPathToNode)
{
    if (sPathToNode.getLength() == 0)
        return Any(rxNode);

    try
    {
        if (rxNode.is())
        {
            return rxNode->getByHierarchicalName(sPathToNode);
        }
    }
    catch (Exception& rException)
    {
        OSL_TRACE ("caught exception while getting configuration node %s: %s",
            ::rtl::OUStringToOString(sPathToNode, RTL_TEXTENCODING_UTF8).getStr(),
            ::rtl::OUStringToOString(rException.Message, RTL_TEXTENCODING_UTF8).getStr());
    }
    
    return Any();
}


void ConfigurationAccess::CommitChanges (void)
{
    Reference<util::XChangesBatch> xConfiguration (mxRoot, UNO_QUERY);
    if (xConfiguration.is())
        xConfiguration->commitChanges();
}


void ConfigurationAccess::ForAll (
    const Reference<container::XNameAccess>& rxContainer,
    const ::std::vector<OUString>& rArguments,
    const Functor& rFunctor)
{
    if (rxContainer.is())
    {
        ::std::vector<Any> aValues(rArguments.size());
        Sequence<OUString> aKeys (rxContainer->getElementNames());
        for (sal_Int32 nItemIndex=0; nItemIndex<aKeys.getLength(); ++nItemIndex)
        {
            const OUString& rsKey (aKeys[nItemIndex]);
            Reference<container::XNameAccess> xSetItem (rxContainer->getByName(rsKey), UNO_QUERY);
            if (xSetItem.is())
            {
                // Get from the current item of the container the children
                // that match the names in the rArguments list.
                for (sal_uInt32 nValueIndex=0; nValueIndex<aValues.size(); ++nValueIndex)
                    aValues[nValueIndex] = xSetItem->getByName(rArguments[nValueIndex]);
            }
            rFunctor(rsKey, aValues);
        }
    }
}


void ConfigurationAccess::FillList(
    const Reference<container::XNameAccess>& rxContainer,
    const ::rtl::OUString& rsArgument,
    ::std::vector<OUString>& rList)
{
    try
    {
        if (rxContainer.is())
        {
            Sequence<OUString> aKeys (rxContainer->getElementNames());
            rList.resize(aKeys.getLength());
            for (sal_Int32 nItemIndex=0; nItemIndex<aKeys.getLength(); ++nItemIndex)
            {
                Reference<container::XNameAccess> xSetItem (
                    rxContainer->getByName(aKeys[nItemIndex]), UNO_QUERY);
                if (xSetItem.is())
                {
                    xSetItem->getByName(rsArgument) >>= rList[nItemIndex];
                }
            }
        }
    }
    catch (RuntimeException&)
    {}
}


} } // end of namespace sd::tools