/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * 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
 * under the License.
 * 
 *************************************************************/


// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_fpicker.hxx"
#include "fpsmartcontent.hxx"

/** === begin UNO includes === **/
#include <com/sun/star/container/XChild.hpp>
#include <com/sun/star/ucb/ContentInfo.hpp>
#include <com/sun/star/ucb/ContentInfoAttribute.hpp>
#include <com/sun/star/ucb/XContent.hpp>
/** === end UNO includes === **/

#include <comphelper/processfactory.hxx>
#include <ucbhelper/commandenvironment.hxx>
#include <tools/solar.h>
#include <tools/debug.hxx>
#include <tools/string.hxx>

//........................................................................
namespace svt
{
//........................................................................

    using namespace ::com::sun::star::uno;
    using namespace ::com::sun::star::task;
    using namespace ::com::sun::star::ucb;
    using namespace ::com::sun::star::lang;
    using namespace ::com::sun::star::container;

    //====================================================================
    //= SmartContent
    //====================================================================
    //--------------------------------------------------------------------
    SmartContent::SmartContent()
        :m_pContent( NULL )
        ,m_eState( NOT_BOUND )
        ,m_pOwnInteraction( NULL )
    {
    }

    //--------------------------------------------------------------------
    SmartContent::SmartContent( const ::rtl::OUString& _rInitialURL )
        :m_pContent( NULL )
        ,m_eState( NOT_BOUND )
    {
        bindTo( _rInitialURL );
    }

    //--------------------------------------------------------------------
    SmartContent::~SmartContent()
    {
        //Do not delete the content. Because the content will be used by the cache.
        //DELETEZ( m_pContent );
    }

    //--------------------------------------------------------------------
    void SmartContent::enableOwnInteractionHandler(::svt::OFilePickerInteractionHandler::EInterceptedInteractions eInterceptions)
    {
        Reference< XMultiServiceFactory > xFactory = ::comphelper::getProcessServiceFactory();
        Reference< XInteractionHandler >  xGlobalInteractionHandler = Reference< XInteractionHandler >(
            xFactory->createInstance( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM("com.sun.star.task.InteractionHandler") ) ), UNO_QUERY );

        m_pOwnInteraction = new ::svt::OFilePickerInteractionHandler(xGlobalInteractionHandler);
        m_pOwnInteraction->enableInterceptions(eInterceptions);
        m_xOwnInteraction = m_pOwnInteraction;

        m_xCmdEnv = new ::ucbhelper::CommandEnvironment( m_xOwnInteraction, Reference< XProgressHandler >() );
    }

    //--------------------------------------------------------------------
    void SmartContent::enableDefaultInteractionHandler()
    {
        // Don't free the memory here! It will be done by the next
        // call automatically - releasing of the uno reference ...
        m_pOwnInteraction = NULL;
        m_xOwnInteraction = Reference< XInteractionHandler >();

        Reference< XMultiServiceFactory > xFactory = ::comphelper::getProcessServiceFactory();
        Reference< XInteractionHandler >  xGlobalInteractionHandler = Reference< XInteractionHandler >(
            xFactory->createInstance( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM("com.sun.star.task.InteractionHandler") ) ), UNO_QUERY );
        m_xCmdEnv = new ucbhelper::CommandEnvironment( xGlobalInteractionHandler, Reference< XProgressHandler >() );
    }

    //--------------------------------------------------------------------
    ::svt::OFilePickerInteractionHandler* SmartContent::getOwnInteractionHandler() const
    {
        if (!m_xOwnInteraction.is())
            return NULL;
        return m_pOwnInteraction;
    }

    //--------------------------------------------------------------------
    SmartContent::InteractionHandlerType SmartContent::queryCurrentInteractionHandler() const
    {
        if (m_xOwnInteraction.is())
            return IHT_OWN;

        if (!m_xCmdEnv.is())
            return IHT_NONE;

        return IHT_DEFAULT;
    }

    //--------------------------------------------------------------------
    void SmartContent::disableInteractionHandler()
    {
        // Don't free the memory here! It will be done by the next
        // call automatically - releasing of the uno reference ...
        m_pOwnInteraction = NULL;
        m_xOwnInteraction.clear();

        m_xCmdEnv.clear();
    }

    //--------------------------------------------------------------------
    void SmartContent::bindTo( const ::rtl::OUString& _rURL )
    {
        if ( getURL() == _rURL )
            // nothing to do, regardless of the state
            return;

        DELETEZ( m_pContent );
        m_eState = INVALID; // default to INVALID
        m_sURL = _rURL;

        if ( m_sURL.getLength() )
        {
            try
            {
                m_pContent = new ::ucbhelper::Content( _rURL, m_xCmdEnv );
                m_eState = UNKNOWN;
                    // from now on, the state is unknown -> we cannot know for sure if the content
                    // is really valid (some UCP's only tell this when asking for properties, not upon
                    // creation)
            }
            catch( ContentCreationException& )
            {
            }
            catch( Exception& )
            {
                DBG_ERROR( "SmartContent::bindTo: unexpected exception caught!" );
            }
        }
        else
        {
            m_eState = NOT_BOUND;
        }


        // don't forget to reset the may internal used interaction handler ...
        // But do it only for our own specialized interaction helper!
        ::svt::OFilePickerInteractionHandler* pHandler = getOwnInteractionHandler();
        if (pHandler)
        {
            pHandler->resetUseState();
            pHandler->forgetRequest();
        }
    }

    //--------------------------------------------------------------------
    sal_Bool SmartContent::implIs( const ::rtl::OUString& _rURL, Type _eType )
    {
        // bind to this content
        bindTo( _rURL );

        // did we survive this?
        if ( isInvalid() || !isBound() )
            return sal_False;

        DBG_ASSERT( m_pContent, "SmartContent::implIs: inconsistence!" );
            // if, after an bindTo, we don't have a content, then we should be INVALID, or at least
            // NOT_BOUND (the latter happens, for example, if somebody tries to ask for an empty URL)

        sal_Bool bIs = sal_False;
        try
        {
            if ( Folder == _eType )
                bIs = m_pContent->isFolder();
            else
                bIs = m_pContent->isDocument();

            // from here on, we definitely know that the content is valid
            m_eState = VALID;
        }
        catch( Exception& )
        {
            // now we're definitely invalid
            m_eState = INVALID;
        }
        return bIs;
    }

    //--------------------------------------------------------------------
    void SmartContent::getTitle( ::rtl::OUString& /* [out] */ _rTitle )
    {
        if ( !isBound() || isInvalid() )
            return;

        try
        {
            ::rtl::OUString sTitle;
            m_pContent->getPropertyValue( ::rtl::OUString::createFromAscii( "Title" ) ) >>= sTitle;
            _rTitle =  sTitle;

            // from here on, we definitely know that the content is valid
            m_eState = VALID;
        }
        catch( ::com::sun::star::uno::Exception& )
        {
            // now we're definitely invalid
            m_eState = INVALID;
        }
    }

    //--------------------------------------------------------------------
    sal_Bool SmartContent::hasParentFolder( )
    {
        if ( !isBound() || isInvalid() )
            return sal_False;

        sal_Bool bRet = sal_False;
        try
        {
            Reference< XChild > xChild( m_pContent->get(), UNO_QUERY );
            if ( xChild.is() )
            {
                Reference< XContent > xParent( xChild->getParent(), UNO_QUERY );
                if ( xParent.is() )
                {
                    String aParentURL = String( xParent->getIdentifier()->getContentIdentifier() );
                    bRet = ( aParentURL.Len() > 0 && aParentURL != (String)(m_pContent->getURL()) );

                    // now we're definitely valid
                    m_eState = VALID;
                }
            }
        }
        catch( const Exception& )
        {
            // now we're definitely invalid
            m_eState = INVALID;
        }
        return bRet;
    }

    //--------------------------------------------------------------------
    sal_Bool SmartContent::canCreateFolder( )
    {
        if ( !isBound() || isInvalid() )
            return sal_False;

        sal_Bool bRet = sal_False;
        try
        {
            Sequence< ContentInfo > aInfo = m_pContent->queryCreatableContentsInfo();
            const ContentInfo* pInfo = aInfo.getConstArray();
            sal_Int32 nCount = aInfo.getLength();
            for ( sal_Int32 i = 0; i < nCount; ++i, ++pInfo )
            {
                // Simply look for the first KIND_FOLDER...
                if ( pInfo->Attributes & ContentInfoAttribute::KIND_FOLDER )
                {
                    bRet = sal_True;
                    break;
                }
            }

            // now we're definitely valid
            m_eState = VALID;
        }
        catch( Exception& )
        {
            // now we're definitely invalid
            m_eState = INVALID;
        }
        return bRet;
    }

//........................................................................
} // namespace svt
//........................................................................