summaryrefslogtreecommitdiff
path: root/unotools/source/accessibility/accessiblestatesethelper.cxx
blob: d2f1e50960f61a49a92e0e23f6a6fa71cefe7197 (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
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

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


#include "unotools/accessiblestatesethelper.hxx"
#include <rtl/uuid.h>
#include <tools/debug.hxx>

// defines how many states the bitfield can contain
// it has the size of 64 because I use a uInt64
#define BITFIELDSIZE 64

using namespace ::utl;
using namespace ::rtl;
using namespace ::com::sun::star;
using namespace ::com::sun::star::accessibility;

class AccessibleStateSetHelperImpl
{
public:
    AccessibleStateSetHelperImpl();
    AccessibleStateSetHelperImpl(const AccessibleStateSetHelperImpl& rImpl);
    ~AccessibleStateSetHelperImpl();

    sal_Bool IsEmpty ()
        throw (uno::RuntimeException);
    sal_Bool Contains (sal_Int16 aState)
        throw (uno::RuntimeException);
    uno::Sequence<sal_Int16> GetStates()
        throw (uno::RuntimeException);
    void AddState(sal_Int16 aState)
        throw (uno::RuntimeException);
    void RemoveState(sal_Int16 aState)
        throw (uno::RuntimeException);
    sal_Bool Compare(const AccessibleStateSetHelperImpl* pComparativeValue,
                        AccessibleStateSetHelperImpl* pOldStates,
                        AccessibleStateSetHelperImpl* pNewStates)
        throw (uno::RuntimeException);

    inline void AddStates( const sal_Int64 _nStates ) SAL_THROW( ( ) );

private:
    sal_uInt64 maStates;
};

AccessibleStateSetHelperImpl::AccessibleStateSetHelperImpl()
    : maStates(0)
{
}

AccessibleStateSetHelperImpl::AccessibleStateSetHelperImpl(const AccessibleStateSetHelperImpl& rImpl)
    : maStates(rImpl.maStates)
{
}

AccessibleStateSetHelperImpl::~AccessibleStateSetHelperImpl()
{
}

inline sal_Bool AccessibleStateSetHelperImpl::IsEmpty ()
    throw (uno::RuntimeException)
{
    return maStates == 0;
}

inline sal_Bool AccessibleStateSetHelperImpl::Contains (sal_Int16 aState)
    throw (uno::RuntimeException)
{
    DBG_ASSERT(aState < BITFIELDSIZE, "the statesset is too small");
    sal_uInt64 aTempBitSet(1);
    aTempBitSet <<= aState;
    return ((aTempBitSet & maStates) != 0);
}

inline uno::Sequence<sal_Int16> AccessibleStateSetHelperImpl::GetStates()
    throw (uno::RuntimeException)
{
    uno::Sequence<sal_Int16> aRet(BITFIELDSIZE);
    sal_Int16* pSeq = aRet.getArray();
    sal_Int16 nStateCount(0);
    for (sal_Int16 i = 0; i < BITFIELDSIZE; ++i)
        if (Contains(i))
        {
            *pSeq = i;
            ++pSeq;
            ++nStateCount;
        }
    aRet.realloc(nStateCount);
    return aRet;
}

inline void AccessibleStateSetHelperImpl::AddStates( const sal_Int64 _nStates ) SAL_THROW( ( ) )
{
    maStates |= _nStates;
}

inline void AccessibleStateSetHelperImpl::AddState(sal_Int16 aState)
    throw (uno::RuntimeException)
{
    DBG_ASSERT(aState < BITFIELDSIZE, "the statesset is too small");
    sal_uInt64 aTempBitSet(1);
    aTempBitSet <<= aState;
    maStates |= aTempBitSet;
}

inline void AccessibleStateSetHelperImpl::RemoveState(sal_Int16 aState)
    throw (uno::RuntimeException)
{
    DBG_ASSERT(aState < BITFIELDSIZE, "the statesset is too small");
    sal_uInt64 aTempBitSet(1);
    aTempBitSet <<= aState;
    aTempBitSet = ~aTempBitSet;
    maStates &= aTempBitSet;
}

inline sal_Bool AccessibleStateSetHelperImpl::Compare(
    const AccessibleStateSetHelperImpl* pComparativeValue,
        AccessibleStateSetHelperImpl* pOldStates,
        AccessibleStateSetHelperImpl* pNewStates)
    throw (uno::RuntimeException)
{
    sal_Bool bResult(sal_False);
    if (pComparativeValue && pOldStates && pNewStates)
    {
        if (maStates == pComparativeValue->maStates)
            bResult = sal_True;
        else
        {
            sal_uInt64 aTempBitSet(maStates);
            aTempBitSet ^= pComparativeValue->maStates;
            pOldStates->maStates = aTempBitSet;
            pOldStates->maStates &= maStates;
            pNewStates->maStates = aTempBitSet;
            pNewStates->maStates &= pComparativeValue->maStates;
        }
    }
    return bResult;
}


//=====  internal  ============================================================

AccessibleStateSetHelper::AccessibleStateSetHelper ()
    : mpHelperImpl(NULL)
{
    mpHelperImpl = new AccessibleStateSetHelperImpl();
}

AccessibleStateSetHelper::AccessibleStateSetHelper ( const sal_Int64 _nInitialStates )
    : mpHelperImpl(NULL)
{
    mpHelperImpl = new AccessibleStateSetHelperImpl();
    mpHelperImpl->AddStates( _nInitialStates );
}

AccessibleStateSetHelper::AccessibleStateSetHelper (const AccessibleStateSetHelper& rHelper)
    : cppu::WeakImplHelper1<XAccessibleStateSet>()
    , mpHelperImpl(NULL)
{
    if (rHelper.mpHelperImpl)
        mpHelperImpl = new AccessibleStateSetHelperImpl(*rHelper.mpHelperImpl);
    else
        mpHelperImpl = new AccessibleStateSetHelperImpl();
}

AccessibleStateSetHelper::~AccessibleStateSetHelper(void)
{
    delete mpHelperImpl;
}

//=====  XAccessibleStateSet  ==============================================

    /** Checks whether the current state set is empty.

        @return
            Returns <TRUE/> if there is no state in this state set and
            <FALSE/> if there is at least one state set in it.
    */
sal_Bool SAL_CALL AccessibleStateSetHelper::isEmpty ()
    throw (uno::RuntimeException)
{
    osl::MutexGuard aGuard (maMutex);
    return mpHelperImpl->IsEmpty();
}

    /** Checks if the given state is a member of the state set of this
        object.

        @param aState
            The state for which to check membership.  This has to be one of
            the constants of <type>AccessibleStateType</type>.

        @return
            Returns <TRUE/> if the given state is a memeber of this object's
            state set and <FALSE/> otherwise.
    */
sal_Bool SAL_CALL AccessibleStateSetHelper::contains (sal_Int16 aState)
    throw (uno::RuntimeException)
{
    osl::MutexGuard aGuard (maMutex);
    return mpHelperImpl->Contains(aState);
}

    /** Checks if all of the given states are in this object's state
        set.

        @param aStateSet
            This sequence of states is interpreted as set and every of its
            members, duplicates are ignored, is checked for membership in
            this object's state set.  Each state has to be one of the
            constants of <type>AccessibleStateType</type>.

        @return
            Returns <TRUE/> if all states of the given state set are members
            of this object's state set.  <FALSE/> is returned if at least
            one of the states in the given state is not a member of this
            object's state set.
    */
sal_Bool SAL_CALL AccessibleStateSetHelper::containsAll
    (const uno::Sequence<sal_Int16>& rStateSet)
    throw (uno::RuntimeException)
{
    osl::MutexGuard aGuard (maMutex);
    sal_Int32 nCount(rStateSet.getLength());
    const sal_Int16* pStates = rStateSet.getConstArray();
    sal_Int32 i = 0;
    sal_Bool bFound(sal_True);
    while (i < nCount)
    {
        bFound = mpHelperImpl->Contains(pStates[i]);
        i++;
    }
    return bFound;
}

uno::Sequence<sal_Int16> SAL_CALL AccessibleStateSetHelper::getStates()
    throw (uno::RuntimeException)
{
    osl::MutexGuard aGuard(maMutex);
    return mpHelperImpl->GetStates();
}

void AccessibleStateSetHelper::AddState(sal_Int16 aState)
    throw (uno::RuntimeException)
{
    osl::MutexGuard aGuard (maMutex);
    mpHelperImpl->AddState(aState);
}

void AccessibleStateSetHelper::RemoveState(sal_Int16 aState)
    throw (uno::RuntimeException)
{
    osl::MutexGuard aGuard (maMutex);
    mpHelperImpl->RemoveState(aState);
}

sal_Bool AccessibleStateSetHelper::Compare(
    const AccessibleStateSetHelper& rComparativeValue,
        AccessibleStateSetHelper& rOldStates,
        AccessibleStateSetHelper& rNewStates)
    throw (uno::RuntimeException)
{
    osl::MutexGuard aGuard (maMutex);
    return mpHelperImpl->Compare(rComparativeValue.mpHelperImpl,
        rOldStates.mpHelperImpl, rNewStates.mpHelperImpl);
}

//=====  XTypeProvider  =======================================================

uno::Sequence< ::com::sun::star::uno::Type>
    AccessibleStateSetHelper::getTypes (void)
    throw (::com::sun::star::uno::RuntimeException)
{
    const ::com::sun::star::uno::Type aTypeList[] = {
        ::getCppuType((const uno::Reference<
            XAccessibleStateSet>*)0),
        ::getCppuType((const uno::Reference<
            lang::XTypeProvider>*)0)
        };
    ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Type>
        aTypeSequence (aTypeList, 2);
    return aTypeSequence;
}

uno::Sequence<sal_Int8> SAL_CALL
    AccessibleStateSetHelper::getImplementationId (void)
    throw (::com::sun::star::uno::RuntimeException)
{
    osl::MutexGuard aGuard (maMutex);
    static uno::Sequence<sal_Int8> aId;
    if (aId.getLength() == 0)
    {
        aId.realloc (16);
        rtl_createUuid ((sal_uInt8 *)aId.getArray(), 0, sal_True);
    }
    return aId;
}

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