summaryrefslogtreecommitdiffstats
path: root/comphelper/source/property/propertycontainerhelper.cxx
blob: ee81100ae617daadb6ba4f7c36c95511a15db5c0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
/* -*- 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 <comphelper/propertycontainerhelper.hxx>
#include <comphelper/property.hxx>
#include <osl/diagnose.h>
#include <uno/data.h>
#include <com/sun/star/uno/Sequence.hxx>
#include <com/sun/star/beans/PropertyAttribute.hpp>
#include <com/sun/star/beans/UnknownPropertyException.hpp>

#include <algorithm>
#include <utility>


namespace comphelper
{


using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::beans;


namespace
{
    // comparing two property descriptions
    struct PropertyDescriptionHandleCompare
    {
        bool operator() (const PropertyDescription& x, const PropertyDescription& y) const
        {
            return x.aProperty.Handle < y.aProperty.Handle;
        }
    };
    // comparing two property descriptions (by name)
    struct PropertyDescriptionNameMatch
    {
        OUString const m_rCompare;
        explicit PropertyDescriptionNameMatch( OUString _aCompare ) : m_rCompare(std::move( _aCompare )) { }

        bool operator() (const PropertyDescription& x ) const
        {
            return x.aProperty.Name == m_rCompare;
        }
    };
}

OPropertyContainerHelper::OPropertyContainerHelper()
{
}


OPropertyContainerHelper::~OPropertyContainerHelper()
{
}


void OPropertyContainerHelper::registerProperty(const OUString& _rName, sal_Int32 _nHandle,
        sal_Int32 _nAttributes, void* _pPointerToMember, const Type& _rMemberType)
{
    OSL_ENSURE((_nAttributes & PropertyAttribute::MAYBEVOID) == 0,
        "OPropertyContainerHelper::registerProperty: don't use this for properties which may be void ! There is a method called \"registerMayBeVoidProperty\" for this !");
    OSL_ENSURE(!_rMemberType.equals(cppu::UnoType<Any>::get()),
        "OPropertyContainerHelper::registerProperty: don't give my the type of a uno::Any ! Really can't handle this !");
    OSL_ENSURE(_pPointerToMember,
        "OPropertyContainerHelper::registerProperty: you gave me nonsense : the pointer must be non-NULL");

    PropertyDescription aNewProp;
    aNewProp.aProperty = Property( _rName, _nHandle, _rMemberType, static_cast<sal_Int16>(_nAttributes) );
    aNewProp.eLocated = PropertyDescription::LocationType::DerivedClassRealType;
    aNewProp.aLocation.pDerivedClassMember = _pPointerToMember;

    implPushBackProperty(aNewProp);
}


void OPropertyContainerHelper::revokeProperty( sal_Int32 _nHandle )
{
    PropertiesIterator aPos = searchHandle( _nHandle );
    if ( aPos == m_aProperties.end() )
        throw UnknownPropertyException(OUString::number(_nHandle));
    m_aProperties.erase( aPos );
}


void OPropertyContainerHelper::registerMayBeVoidProperty(const OUString& _rName, sal_Int32 _nHandle, sal_Int32 _nAttributes,
        Any* _pPointerToMember, const Type& _rExpectedType)
{
    OSL_ENSURE((_nAttributes & PropertyAttribute::MAYBEVOID) != 0,
        "OPropertyContainerHelper::registerMayBeVoidProperty: why calling this when the attributes say nothing about may-be-void ?");
    OSL_ENSURE(!_rExpectedType.equals(cppu::UnoType<Any>::get()),
        "OPropertyContainerHelper::registerMayBeVoidProperty: don't give my the type of a uno::Any ! Really can't handle this !");
    OSL_ENSURE(_pPointerToMember,
        "OPropertyContainerHelper::registerMayBeVoidProperty: you gave me nonsense : the pointer must be non-NULL");

    _nAttributes |= PropertyAttribute::MAYBEVOID;

    PropertyDescription aNewProp;
    aNewProp.aProperty = Property( _rName, _nHandle, _rExpectedType, static_cast<sal_Int16>(_nAttributes) );
    aNewProp.eLocated = PropertyDescription::LocationType::DerivedClassAnyType;
    aNewProp.aLocation.pDerivedClassMember = _pPointerToMember;

    implPushBackProperty(aNewProp);
}


void OPropertyContainerHelper::registerPropertyNoMember(const OUString& _rName, sal_Int32 _nHandle, sal_Int32 _nAttributes,
        const Type& _rType, css::uno::Any const & _pInitialValue)
{
    OSL_ENSURE(!_rType.equals(cppu::UnoType<Any>::get()),
        "OPropertyContainerHelper::registerPropertyNoMember : don't give my the type of a uno::Any ! Really can't handle this !");
    OSL_ENSURE(
        (_pInitialValue.isExtractableTo(_rType)
         || (!_pInitialValue.hasValue()
             && (_nAttributes & PropertyAttribute::MAYBEVOID) != 0)),
        "bad initial value");

    PropertyDescription aNewProp;
    aNewProp.aProperty = Property( _rName, _nHandle, _rType, static_cast<sal_Int16>(_nAttributes) );
    aNewProp.eLocated = PropertyDescription::LocationType::HoldMyself;
    aNewProp.aLocation.nOwnClassVectorIndex = m_aHoldProperties.size();
    m_aHoldProperties.push_back(_pInitialValue);

    implPushBackProperty(aNewProp);
}


bool OPropertyContainerHelper::isRegisteredProperty( sal_Int32 _nHandle ) const
{
    return const_cast< OPropertyContainerHelper* >( this )->searchHandle( _nHandle ) != m_aProperties.end();
}


bool OPropertyContainerHelper::isRegisteredProperty( const OUString& _rName ) const
{
    // TODO: the current structure is from a time where properties were
    // static, not dynamic. Since we allow that properties are also dynamic,
    // i.e. registered and revoked even though the XPropertySet has already been
    // accessed, a vector is not really the best data structure anymore ...

    return std::any_of(
        m_aProperties.begin(),
        m_aProperties.end(),
        PropertyDescriptionNameMatch( _rName )
    );
}


namespace
{
    struct ComparePropertyHandles
    {
        bool operator()( const PropertyDescription& _rLHS, const PropertyDescription& _nRHS ) const
        {
            return _rLHS.aProperty.Handle < _nRHS.aProperty.Handle;
        }
    };
}


void OPropertyContainerHelper::implPushBackProperty(const PropertyDescription& _rProp)
{
#ifdef DBG_UTIL
    for (const auto& checkConflicts : m_aProperties)
    {
        OSL_ENSURE(checkConflicts.aProperty.Name != _rProp.aProperty.Name, "OPropertyContainerHelper::implPushBackProperty: name already exists!");
        OSL_ENSURE(checkConflicts.aProperty.Handle != _rProp.aProperty.Handle, "OPropertyContainerHelper::implPushBackProperty: handle already exists!");
    }
#endif

    PropertiesIterator pos = std::lower_bound(
        m_aProperties.begin(), m_aProperties.end(),
        _rProp, ComparePropertyHandles() );

    m_aProperties.insert( pos, _rProp );
}


namespace
{
    void lcl_throwIllegalPropertyValueTypeException( const PropertyDescription& _rProperty, const Any& _rValue )
    {
        throw IllegalArgumentException(
            "The given value cannot be converted to the required property type."
            " (property name \"" +  _rProperty.aProperty.Name
            + "\", found value type \"" + _rValue.getValueType().getTypeName()
            + "\", required property type \"" + _rProperty.aProperty.Type.getTypeName()
            + "\")",
            nullptr, 4 );
    }
}


bool OPropertyContainerHelper::convertFastPropertyValue(
    Any& _rConvertedValue, Any& _rOldValue, sal_Int32 _nHandle, const Any& _rValue )
{
    bool bModified = false;

    // get the property somebody is asking for
    PropertiesIterator aPos = searchHandle(_nHandle);
    if (aPos == m_aProperties.end())
    {
        OSL_FAIL( "OPropertyContainerHelper::convertFastPropertyValue: unknown handle!" );
        // should not happen if the derived class has built a correct property set info helper to be used by
        // our base class OPropertySetHelper
        return bModified;
    }

    switch (aPos->eLocated)
    {
        // similar handling for the two cases where the value is stored in an any
        case PropertyDescription::LocationType::HoldMyself:
        case PropertyDescription::LocationType::DerivedClassAnyType:
        {
            bool bMayBeVoid = ((aPos->aProperty.Attributes & PropertyAttribute::MAYBEVOID) != 0);


            // non modifiable version of the value-to-be-set
            Any aNewRequestedValue( _rValue );

            // normalization
            // #i29490#
            if ( !aNewRequestedValue.getValueType().equals( aPos->aProperty.Type ) )
            {   // the actually given value is not of the same type as the one required
                Any aProperlyTyped( nullptr, aPos->aProperty.Type.getTypeLibType() );

                if (    uno_type_assignData(
                            const_cast< void* >( aProperlyTyped.getValue() ), aProperlyTyped.getValueType().getTypeLibType(),
                            const_cast< void* >( aNewRequestedValue.getValue() ), aNewRequestedValue.getValueType().getTypeLibType(),
                            reinterpret_cast< uno_QueryInterfaceFunc >( cpp_queryInterface ),
                            reinterpret_cast< uno_AcquireFunc >( cpp_acquire ),
                            reinterpret_cast< uno_ReleaseFunc >( cpp_release )
                        )
                    )
                {
                    // we were able to query the given XInterface-derivee for the interface
                    // which is required for this property
                    aNewRequestedValue = aProperlyTyped;
                }
            }

            // argument check
            if  (   !   (   (bMayBeVoid && !aNewRequestedValue.hasValue())                      // void is allowed if the attribute says so
                        ||  (aNewRequestedValue.getValueType().equals(aPos->aProperty.Type))    // else the types have to be equal
                        )
                )
            {
                lcl_throwIllegalPropertyValueTypeException( *aPos, _rValue );
            }

            Any* pPropContainer = nullptr;
                // the pointer to the any which holds the property value, no matter if located in the derived class
                // or in out vector

            if (PropertyDescription::LocationType::HoldMyself == aPos->eLocated)
            {
                OSL_ENSURE(aPos->aLocation.nOwnClassVectorIndex < m_aHoldProperties.size(),
                    "OPropertyContainerHelper::convertFastPropertyValue: invalid position !");
                auto aIter = m_aHoldProperties.begin() + aPos->aLocation.nOwnClassVectorIndex;
                pPropContainer = &(*aIter);
            }
            else
                pPropContainer = static_cast<Any*>(aPos->aLocation.pDerivedClassMember);

            // check if the new value differs from the current one
            if (!pPropContainer->hasValue() || !aNewRequestedValue.hasValue())
                bModified = pPropContainer->hasValue() != aNewRequestedValue.hasValue();
            else
                bModified = !uno_type_equalData(
                                const_cast< void* >( pPropContainer->getValue() ), aPos->aProperty.Type.getTypeLibType(),
                                const_cast< void* >( aNewRequestedValue.getValue() ), aPos->aProperty.Type.getTypeLibType(),
                                reinterpret_cast< uno_QueryInterfaceFunc >( cpp_queryInterface ),
                                reinterpret_cast< uno_ReleaseFunc >( cpp_release )
                            );

            if (bModified)
            {
                _rOldValue = *pPropContainer;
                _rConvertedValue = aNewRequestedValue;
            }
        }
        break;
        case PropertyDescription::LocationType::DerivedClassRealType:
            // let the UNO runtime library do any possible conversion
            // this may include a change of the type - for instance, if a LONG is required,
            // but a short is given, then this is valid, as it can be converted without any potential
            // data loss

            Any aProperlyTyped;
            const Any* pNewValue = &_rValue;

            if (!_rValue.getValueType().equals(aPos->aProperty.Type))
            {
                bool bConverted = false;

                // a temporary any of the correct (required) type
                aProperlyTyped = Any( nullptr, aPos->aProperty.Type.getTypeLibType() );
                    // (need this as we do not want to overwrite the derived class member here)

                if (    uno_type_assignData(
                            const_cast<void*>(aProperlyTyped.getValue()), aProperlyTyped.getValueType().getTypeLibType(),
                            const_cast<void*>(_rValue.getValue()), _rValue.getValueType().getTypeLibType(),
                            reinterpret_cast< uno_QueryInterfaceFunc >( cpp_queryInterface ),
                            reinterpret_cast< uno_AcquireFunc >( cpp_acquire ),
                            reinterpret_cast< uno_ReleaseFunc >( cpp_release )
                        )
                    )
                {
                    // could query for the requested interface
                    bConverted = true;
                    pNewValue = &aProperlyTyped;
                }

                if ( !bConverted )
                    lcl_throwIllegalPropertyValueTypeException( *aPos, _rValue );
            }

            // from here on, we should have the proper type
            OSL_ENSURE( pNewValue->getValueType() == aPos->aProperty.Type,
                "OPropertyContainerHelper::convertFastPropertyValue: conversion failed!" );
            bModified = !uno_type_equalData(
                            aPos->aLocation.pDerivedClassMember, aPos->aProperty.Type.getTypeLibType(),
                            const_cast<void*>(pNewValue->getValue()), aPos->aProperty.Type.getTypeLibType(),
                            reinterpret_cast< uno_QueryInterfaceFunc >( cpp_queryInterface ),
                            reinterpret_cast< uno_ReleaseFunc >( cpp_release )
                        );

            if (bModified)
            {
                _rOldValue.setValue(aPos->aLocation.pDerivedClassMember, aPos->aProperty.Type);
                _rConvertedValue = *pNewValue;
            }
            break;
    }

    return bModified;
}


void OPropertyContainerHelper::setFastPropertyValue(sal_Int32 _nHandle, const Any& _rValue)
{
    // get the property somebody is asking for
    PropertiesIterator aPos = searchHandle(_nHandle);
    if (aPos == m_aProperties.end())
    {
        OSL_FAIL( "OPropertyContainerHelper::setFastPropertyValue: unknown handle!" );
        // should not happen if the derived class has built a correct property set info helper to be used by
        // our base class OPropertySetHelper
        return;
    }

    bool bSuccess = true;

    switch (aPos->eLocated)
    {
        case PropertyDescription::LocationType::HoldMyself:
            m_aHoldProperties[aPos->aLocation.nOwnClassVectorIndex] = _rValue;
            break;

        case PropertyDescription::LocationType::DerivedClassAnyType:
            *static_cast< Any* >(aPos->aLocation.pDerivedClassMember) = _rValue;
            break;

        case PropertyDescription::LocationType::DerivedClassRealType:
            // copy the data from the to-be-set value
            bSuccess = uno_type_assignData(
                aPos->aLocation.pDerivedClassMember,        aPos->aProperty.Type.getTypeLibType(),
                const_cast< void* >( _rValue.getValue() ),  _rValue.getValueType().getTypeLibType(),
                reinterpret_cast< uno_QueryInterfaceFunc >( cpp_queryInterface ),
                reinterpret_cast< uno_AcquireFunc >( cpp_acquire ),
                reinterpret_cast< uno_ReleaseFunc >( cpp_release ) );

            OSL_ENSURE( bSuccess,
                "OPropertyContainerHelper::setFastPropertyValue: ooops... the value could not be assigned!");

            break;
    }
}

void OPropertyContainerHelper::getFastPropertyValue(Any& _rValue, sal_Int32 _nHandle) const
{
    // get the property somebody is asking for
    PropertiesIterator aPos = const_cast<OPropertyContainerHelper*>(this)->searchHandle(_nHandle);
    if (aPos == m_aProperties.end())
    {
        OSL_FAIL( "OPropertyContainerHelper::getFastPropertyValue: unknown handle!" );
        // should not happen if the derived class has built a correct property set info helper to be used by
        // our base class OPropertySetHelper
        return;
    }

    switch (aPos->eLocated)
    {
        case PropertyDescription::LocationType::HoldMyself:
            OSL_ENSURE(aPos->aLocation.nOwnClassVectorIndex < m_aHoldProperties.size(),
                "OPropertyContainerHelper::convertFastPropertyValue: invalid position !");
            _rValue = m_aHoldProperties[aPos->aLocation.nOwnClassVectorIndex];
            break;
        case PropertyDescription::LocationType::DerivedClassAnyType:
            _rValue = *static_cast<Any*>(aPos->aLocation.pDerivedClassMember);
            break;
        case PropertyDescription::LocationType::DerivedClassRealType:
            _rValue.setValue(aPos->aLocation.pDerivedClassMember, aPos->aProperty.Type);
            break;
    }
}


OPropertyContainerHelper::PropertiesIterator OPropertyContainerHelper::searchHandle(sal_Int32 _nHandle)
{
    PropertyDescription aHandlePropDesc;
    aHandlePropDesc.aProperty.Handle = _nHandle;
    // search a lower bound
    PropertiesIterator aLowerBound = std::lower_bound(
        m_aProperties.begin(),
        m_aProperties.end(),
        aHandlePropDesc,
        PropertyDescriptionHandleCompare());

    // check for identity
    if ((aLowerBound != m_aProperties.end()) && aLowerBound->aProperty.Handle != _nHandle)
        aLowerBound = m_aProperties.end();

    return aLowerBound;
}


const Property& OPropertyContainerHelper::getProperty( const OUString& _rName ) const
{
    ConstPropertiesIterator pos = std::find_if(
        m_aProperties.begin(),
        m_aProperties.end(),
        PropertyDescriptionNameMatch( _rName )
    );
    if ( pos == m_aProperties.end() )
        throw UnknownPropertyException( _rName );

    return pos->aProperty;
}


void OPropertyContainerHelper::describeProperties(Sequence< Property >& _rProps) const
{
    Sequence< Property > aOwnProps(m_aProperties.size());
    Property* pOwnProps = aOwnProps.getArray();

    for (const auto& rProp : m_aProperties)
    {
        pOwnProps->Name = rProp.aProperty.Name;
        pOwnProps->Handle = rProp.aProperty.Handle;
        pOwnProps->Attributes = rProp.aProperty.Attributes;
        pOwnProps->Type = rProp.aProperty.Type;
        ++pOwnProps;
    }

    // as our property vector is sorted by handles, not by name, we have to sort aOwnProps
    auto [begin, end] = asNonConstRange(aOwnProps);
    std::sort(begin, end, PropertyCompareByName());

    // unfortunately the STL merge function does not allow the output range to overlap one of the input ranges,
    // so we need an extra sequence
    Sequence< Property > aOutput(_rProps.getLength() + aOwnProps.getLength());
    // do the merge
    std::merge(   std::cbegin(_rProps), std::cend(_rProps),       // input 1
                  std::cbegin(aOwnProps), std::cend(aOwnProps),   // input 2
                  aOutput.getArray(),                   // output
                  PropertyCompareByName()               // compare operator
              );

    // copy the output
    _rProps = aOutput;
}


}   // namespace comphelper


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