/**************************************************************
 * 
 * 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.
 * 
 *************************************************************/

#include "stdafx.h"
#include "UAccCOM2.h"
#include "AccRelation.h"
#include <com/sun/star/accessibility/XAccessible.hpp>
#include <com/sun/star/accessibility/XAccessibleContext.hpp>
#include "MAccessible.h"

using namespace com::sun::star::accessibility;
using namespace com::sun::star::uno;

/**
   * Get relation type.
   * @param relationType Variant to get relation type.
   * @return Result.
*/
STDMETHODIMP CAccRelation::get_relationType(BSTR * relationType)
{
    
	CHECK_ENABLE_INF

    ENTER_PROTECTED_BLOCK

    if (relationType == NULL)
        return E_INVALIDARG;

    int type = relation.RelationType;
    SAFE_SYSFREESTRING(*relationType);

    *relationType = getRelationTypeBSTR(type);
    return S_OK;

    LEAVE_PROTECTED_BLOCK
}

// Gets what the type of localized relation is.
STDMETHODIMP CAccRelation::get_localizedRelationType(BSTR *)
{
    

    ENTER_PROTECTED_BLOCK

    return S_OK;

    LEAVE_PROTECTED_BLOCK
}

/**
   * Get targets length.
   * @param nTargets Variant to get targets length.
   * @return Result.
*/
STDMETHODIMP CAccRelation::get_nTargets(long * nTargets)
{
    

    ENTER_PROTECTED_BLOCK

	CHECK_ENABLE_INF
    if (nTargets == NULL)
        return E_INVALIDARG;

    Sequence< Reference< XInterface > > xTargets = relation.TargetSet;
    *nTargets = xTargets.getLength();
    return S_OK;

    LEAVE_PROTECTED_BLOCK
}

/**
   * Get special target.
   * @param targetIndex target index.
   * @param target      Variant to get special target.
   * @return Result.
*/
STDMETHODIMP CAccRelation::get_target(long targetIndex, IUnknown * * target)
{
    
	CHECK_ENABLE_INF

    ENTER_PROTECTED_BLOCK

    if (target == NULL)
        return E_FAIL;

    Sequence< Reference< XInterface > > xTargets = relation.TargetSet;
    int nCount = xTargets.getLength();
    if( targetIndex >= nCount )
        return E_FAIL;

    Reference<XInterface> pRAcc = xTargets[targetIndex];
    IAccessible* pRet = NULL;

    BOOL isGet = CMAccessible::get_IAccessibleFromXAccessible((long)pRAcc.get(),&pRet);
    if(isGet)
    {
        *target = /*(IAccessible2 *)*/(IUnknown*)pRet;
        pRet->AddRef();
        return S_OK;
    }

    return E_FAIL;

    LEAVE_PROTECTED_BLOCK
}

/**
   * Get special targets.
   * @param maxTargets Special targets count.
   * @param target Variant to get special target.
   * @param nTargets Variant to accept actual target length.
   * @return Result.
*/
STDMETHODIMP CAccRelation::get_targets(long, IUnknown * * target, long * nTargets)
{
    
	CHECK_ENABLE_INF

    ENTER_PROTECTED_BLOCK

    // #CHECK#
    if(target == NULL)
        return E_INVALIDARG;
    if (nTargets == NULL)
        return E_INVALIDARG;

    Sequence< Reference< XInterface > > xTargets = relation.TargetSet;
    int nCount = xTargets.getLength();

    *target = (IUnknown*)::CoTaskMemAlloc(nCount*sizeof(IUnknown));

    // #CHECK Memory Allocation#
    if(*target == NULL)
    {
        return E_FAIL;
    }

    for(int i=0; i<nCount ; i++)
    {
        IUnknown* pAcc = NULL;
        HRESULT hr = get_target(i,&pAcc);
        if(SUCCEEDED(hr))
            target[i] = pAcc;
    }

    *nTargets = nCount;
    return S_OK;

    LEAVE_PROTECTED_BLOCK
}

/**
   * Put UNO interface.
   * @param pXSubInterface AccessibleRelation pointer.
   * @return Result.
*/
STDMETHODIMP CAccRelation::put_XSubInterface(long pXSubInterface)
{
    
    relation = *((AccessibleRelation*)pXSubInterface);
    return S_OK;
}

/**
   * Get relation type string by type.
   * @param type Relation type.
   * @return relation type string.
*/
BSTR CAccRelation::getRelationTypeBSTR(int type)
{
    static struct TYPE_BSTR_MAP
    {
        LPCTSTR string;
        int type;
    }
    map[] =
        {
            {_T("INVALID")				,	0},
            {IA2_RELATION_FLOWS_FROM	,	1},
            {IA2_RELATION_FLOWS_TO		,	2},
            {IA2_RELATION_CONTROLLED_BY	,	3},
            {IA2_RELATION_CONTROLLER_FOR,	4},
            {IA2_RELATION_LABEL_FOR		,	5},
            {IA2_RELATION_LABELED_BY	,	6},
            {IA2_RELATION_MEMBER_OF		,	7},
            {IA2_RELATION_SUBWINDOW_OF	,	8},
			{IA2_RELATION_NODE_CHILD_OF,	9},
            {IA2_RELATION_DESCRIBED_BY	,	10},
        };

    USES_CONVERSION;

    return (type >= 0 && type <= 10) ? T2BSTR(map[type].string) : _T("");
}