path: root/unotools/source/config/cmdoptions.cxx

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   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 .
 */

#include <unotools/cmdoptions.hxx>
#include <unotools/configmgr.hxx>
#include <unotools/configitem.hxx>
#include <tools/debug.hxx>
#include <com/sun/star/uno/Any.hxx>
#include <com/sun/star/uno/Sequence.hxx>
#include <cppuhelper/weakref.hxx>
#include <rtl/ustrbuf.hxx>
#include <rtl/instance.hxx>
#include <osl/diagnose.h>

#include "itemholder1.hxx"

#include <algorithm>
#include <boost/unordered_map.hpp>

using namespace ::std;
using namespace ::utl;
using namespace ::osl;
using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::beans;

#define ROOTNODE_CMDOPTIONS                             OUString("Office.Commands/Execute")
#define PATHDELIMITER                                   OUString("/")

#define SETNODE_DISABLED                                OUString("Disabled")

#define PROPERTYNAME_CMD                                OUString("Command")

/*-****************************************************************************************************************
    @descr  support simple command option structures and operations on it
****************************************************************************************************************-*/
class SvtCmdOptions
{
    public:

        // the only way to free memory!
        void Clear()
        {
            m_aCommandHashMap.clear();
        }

        bool HasEntries() const
        {
            return ( m_aCommandHashMap.size() > 0 );
        }

        bool Lookup( const OUString& aCmd ) const
        {
            CommandHashMap::const_iterator pEntry = m_aCommandHashMap.find( aCmd );
            return ( pEntry != m_aCommandHashMap.end() );
        }

        void AddCommand( const OUString& aCmd )
        {
            m_aCommandHashMap.insert( CommandHashMap::value_type( aCmd, 0 ) );
        }

    private:
        typedef boost::unordered_map<OUString, sal_Int32, OUStringHash>
            CommandHashMap;

        CommandHashMap m_aCommandHashMap;
};

typedef ::std::vector< ::com::sun::star::uno::WeakReference< ::com::sun::star::frame::XFrame > > SvtFrameVector;

class SvtCommandOptions_Impl : public ConfigItem
{
    public:

         SvtCommandOptions_Impl();
        virtual ~SvtCommandOptions_Impl();

        /*-****************************************************************************************************
            @short      called for notify of configmanager
            @descr      These method is called from the ConfigManager before application ends or from the
                         PropertyChangeListener if the sub tree broadcasts changes. You must update your
                        internal values.

            @seealso    baseclass ConfigItem

            @param      "lPropertyNames" is the list of properties which should be updated.
        *//*-*****************************************************************************************************/

        virtual void Notify( const Sequence< OUString >& lPropertyNames ) SAL_OVERRIDE;

        /*-****************************************************************************************************
            @short      write changes to configuration
            @descr      These method writes the changed values into the sub tree
                        and should always called in our destructor to guarantee consistency of config data.

            @seealso    baseclass ConfigItem
        *//*-*****************************************************************************************************/

        virtual void Commit() SAL_OVERRIDE;

        /*-****************************************************************************************************
            @short      base implementation of public interface for "SvtDynamicMenuOptions"!
            @descr      These class is used as static member of "SvtDynamicMenuOptions" ...
                        => The code exist only for one time and isn't duplicated for every instance!
        *//*-*****************************************************************************************************/

        bool                HasEntries  (   SvtCommandOptions::CmdOption    eOption     ) const;
        bool                Lookup      (   SvtCommandOptions::CmdOption    eCmdOption, const OUString& ) const;
        void EstablisFrameCallback(const ::com::sun::star::uno::Reference< ::com::sun::star::frame::XFrame >& xFrame);

    private:

        /*-****************************************************************************************************
            @short      return list of key names of our configuration management which represent oue module tree
            @descr      These methods return the current list of key names! We need it to get needed values from our
                        configuration management and support dynamical menu item lists!
            @param      "nDisabledCount"    ,   returns count of menu entries for "new"
            @return     A list of configuration key names is returned.
        *//*-*****************************************************************************************************/

        Sequence< OUString > impl_GetPropertyNames();

    private:
        SvtCmdOptions  m_aDisabledCommands;
        SvtFrameVector m_lFrames;
};

//  constructor

SvtCommandOptions_Impl::SvtCommandOptions_Impl()
    // Init baseclasses first
    :   ConfigItem( ROOTNODE_CMDOPTIONS )
    // Init member then...
{
    // Get names and values of all accessible menu entries and fill internal structures.
    // See impl_GetPropertyNames() for further information.
    Sequence< OUString >    lNames              = impl_GetPropertyNames ();
    Sequence< Any >         lValues             = GetProperties         ( lNames         );

    // Safe impossible cases.
    // We need values from ALL configuration keys.
    // Follow assignment use order of values in relation to our list of key names!
    DBG_ASSERT( !(lNames.getLength()!=lValues.getLength()), "SvtCommandOptions_Impl::SvtCommandOptions_Impl()\nI miss some values of configuration keys!\n" );

    // Copy values from list in right order to our internal member.
    // Attention: List for names and values have an internal construction pattern!
    sal_Int32   nItem     = 0;
    OUString    sCmd;

    // Get names/values for disabled commands.
    for( nItem=0; nItem < lNames.getLength(); ++nItem )
    {
        // Currently only one value
        lValues[nItem] >>= sCmd;
        m_aDisabledCommands.AddCommand( sCmd );
    }

/*TODO: Not used in the moment! see Notify() ...
    // Enable notification mechanism of our baseclass.
    // We need it to get information about changes outside these class on our used configuration keys! */
    Sequence< OUString > aNotifySeq( 1 );
    aNotifySeq[0] = "Disabled";
    EnableNotification( aNotifySeq, true );
}

//  destructor

SvtCommandOptions_Impl::~SvtCommandOptions_Impl()
{
    // We must save our current values .. if user forget it!
    if( IsModified() )
    {
        Commit();
    }
}

//  public method

void SvtCommandOptions_Impl::Notify( const Sequence< OUString >& )
{
    MutexGuard aGuard( SvtCommandOptions::GetOwnStaticMutex() );

    Sequence< OUString >    lNames   = impl_GetPropertyNames ();
    Sequence< Any >         lValues  = GetProperties         ( lNames         );

    // Safe impossible cases.
    // We need values from ALL configuration keys.
    // Follow assignment use order of values in relation to our list of key names!
    DBG_ASSERT( !(lNames.getLength()!=lValues.getLength()), "SvtCommandOptions_Impl::Notify()\nI miss some values of configuration keys!\n" );

    // Copy values from list in right order to our internal member.
    // Attention: List for names and values have an internal construction pattern!
    sal_Int32   nItem     = 0;
    OUString    sCmd;

    m_aDisabledCommands.Clear();

    // Get names/values for disabled commands.
    for( nItem=0; nItem < lNames.getLength(); ++nItem )
    {
        // Currently only one value
        lValues[nItem] >>= sCmd;
        m_aDisabledCommands.AddCommand( sCmd );
    }

    // dont forget to update all existing frames and her might cached dispatch objects!
    // But look for already killed frames. We hold weak references instead of hard ones ...
    for (SvtFrameVector::const_iterator pIt  = m_lFrames.begin();
                                        pIt != m_lFrames.end();
                                      ++pIt                     )
    {
        ::com::sun::star::uno::Reference< ::com::sun::star::frame::XFrame > xFrame(pIt->get(), ::com::sun::star::uno::UNO_QUERY);
        if (xFrame.is())
            xFrame->contextChanged();
    }
}

//  public method

void SvtCommandOptions_Impl::Commit()
{
    OSL_FAIL( "SvtCommandOptions_Impl::Commit()\nNot implemented yet!\n" );
}

//  public method

bool SvtCommandOptions_Impl::HasEntries( SvtCommandOptions::CmdOption eOption ) const
{
    if ( eOption == SvtCommandOptions::CMDOPTION_DISABLED )
        return m_aDisabledCommands.HasEntries();
    else
        return false;
}

//  public method

bool SvtCommandOptions_Impl::Lookup( SvtCommandOptions::CmdOption eCmdOption, const OUString& aCommand ) const
{
    switch( eCmdOption )
    {
        case SvtCommandOptions::CMDOPTION_DISABLED:
        {
            return m_aDisabledCommands.Lookup( aCommand );
        }
        default:
            DBG_ASSERT( false, "SvtCommandOptions_Impl::Lookup()\nUnknown option type given!\n" );
    }

    return false;
}

//  public method

void SvtCommandOptions_Impl::EstablisFrameCallback(const ::com::sun::star::uno::Reference< ::com::sun::star::frame::XFrame >& xFrame)
{
    // check if frame already exists inside list
    // ignore double registrations
    // every frame must be notified one times only!
    ::com::sun::star::uno::WeakReference< ::com::sun::star::frame::XFrame > xWeak(xFrame);
    SvtFrameVector::const_iterator pIt = ::std::find(m_lFrames.begin(), m_lFrames.end(), xWeak);
    if (pIt == m_lFrames.end())
        m_lFrames.push_back(xWeak);
}

//  private method

Sequence< OUString > SvtCommandOptions_Impl::impl_GetPropertyNames()
{
    // First get ALL names of current existing list items in configuration!
    Sequence< OUString > lDisabledItems      = GetNodeNames( SETNODE_DISABLED, utl::CONFIG_NAME_LOCAL_PATH );

    OUString aSetNode( SETNODE_DISABLED );
    aSetNode += PATHDELIMITER;

    OUString aCommandKey( PATHDELIMITER );
    aCommandKey += PROPERTYNAME_CMD;

    // Expand all keys
    for (sal_Int32 i=0; i<lDisabledItems.getLength(); ++i )
    {
        OUStringBuffer aBuffer( 32 );
        aBuffer.append( aSetNode );
        aBuffer.append( lDisabledItems[i] );
        aBuffer.append( aCommandKey );
        lDisabledItems[i] = aBuffer.makeStringAndClear();
    }

    // Return result.
    return lDisabledItems;
}

//  initialize static member
//  DON'T DO IT IN YOUR HEADER!
//  see definition for further information

SvtCommandOptions_Impl*     SvtCommandOptions::m_pDataContainer = NULL;
sal_Int32                   SvtCommandOptions::m_nRefCount      = 0;

//  constructor

SvtCommandOptions::SvtCommandOptions()
{
    // Global access, must be guarded (multithreading!).
    MutexGuard aGuard( GetOwnStaticMutex() );
    // Increase our refcount ...
    ++m_nRefCount;
    // ... and initialize our data container only if it not already exist!
    if( m_pDataContainer == NULL )
    {
        m_pDataContainer = new SvtCommandOptions_Impl;
        ItemHolder1::holdConfigItem(E_CMDOPTIONS);
    }
}

//  destructor

SvtCommandOptions::~SvtCommandOptions()
{
    // Global access, must be guarded (multithreading!)
    MutexGuard aGuard( GetOwnStaticMutex() );
    // Decrease our refcount.
    --m_nRefCount;
    // If last instance was deleted ...
    // we must destroy our static data container!
    if( m_nRefCount <= 0 )
    {
        delete m_pDataContainer;
        m_pDataContainer = NULL;
    }
}

//  public method

bool SvtCommandOptions::HasEntries( CmdOption eOption ) const
{
    MutexGuard aGuard( GetOwnStaticMutex() );
    return m_pDataContainer->HasEntries( eOption );
}

//  public method

bool SvtCommandOptions::Lookup( CmdOption eCmdOption, const OUString& aCommandURL ) const
{
    MutexGuard aGuard( GetOwnStaticMutex() );
    return m_pDataContainer->Lookup( eCmdOption, aCommandURL );
}

//  public method

void SvtCommandOptions::EstablisFrameCallback(const ::com::sun::star::uno::Reference< ::com::sun::star::frame::XFrame >& xFrame)
{
    MutexGuard aGuard( GetOwnStaticMutex() );
    m_pDataContainer->EstablisFrameCallback(xFrame);
}

namespace
{
    class theCommandOptionsMutex : public rtl::Static<osl::Mutex, theCommandOptionsMutex>{};
}

//  private method

Mutex& SvtCommandOptions::GetOwnStaticMutex()
{
    return theCommandOptionsMutex::get();
}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */