summaryrefslogtreecommitdiff
path: root/accessibility/source/standard/vclxaccessiblebox.cxx
blob: f83f0b6bbd5ca262af7db5c0525bede80dd340cc (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
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
/* -*- 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 <accessibility/standard/vclxaccessiblebox.hxx>
#include <accessibility/standard/vclxaccessibletextfield.hxx>
#include <accessibility/standard/vclxaccessibleedit.hxx>
#include <accessibility/standard/vclxaccessiblelist.hxx>
#include <accessibility/helper/listboxhelper.hxx>

#include <unotools/accessiblestatesethelper.hxx>
#include <com/sun/star/accessibility/AccessibleStateType.hpp>
#include <com/sun/star/accessibility/AccessibleEventId.hpp>
#include <com/sun/star/accessibility/AccessibleRole.hpp>
#include <vcl/svapp.hxx>
#include <vcl/combobox.hxx>
#include <vcl/lstbox.hxx>
#include <accessibility/helper/accresmgr.hxx>
#include <accessibility/helper/accessiblestrings.hrc>

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

VCLXAccessibleBox::VCLXAccessibleBox (VCLXWindow* pVCLWindow, BoxType aType, bool bIsDropDownBox)
    : VCLXAccessibleComponent (pVCLWindow),
      m_aBoxType (aType),
      m_bIsDropDownBox (bIsDropDownBox),
      m_nIndexInParent (DEFAULT_INDEX_IN_PARENT)
{
    // Set up the flags that indicate which children this object has.
    m_bHasListChild = true;

    // A text field is not present for non drop down list boxes.
    if ((m_aBoxType==LISTBOX) && ! m_bIsDropDownBox)
        m_bHasTextChild = false;
    else
        m_bHasTextChild = true;
}

VCLXAccessibleBox::~VCLXAccessibleBox()
{
}

void VCLXAccessibleBox::ProcessWindowChildEvent( const VclWindowEvent& rVclWindowEvent )
{
       uno::Any aOldValue, aNewValue;
    uno::Reference<XAccessible> xAcc;

    switch ( rVclWindowEvent.GetId() )
    {
        case VCLEVENT_WINDOW_SHOW:
        case VCLEVENT_WINDOW_HIDE:
        {
            vcl::Window* pChildWindow = static_cast<vcl::Window *>(rVclWindowEvent.GetData());
            // Just compare to the combo box text field.  All other children
            // are identical to this object in which case this object will
            // be removed in a short time.
            if (m_aBoxType==COMBOBOX)
            {
                VclPtr< ComboBox > pComboBox = GetAs< ComboBox >();
                if ( ( pComboBox != nullptr ) && ( pChildWindow != NULL ) )
                    if (pChildWindow == pComboBox->GetSubEdit())
                    {
                        if (rVclWindowEvent.GetId() == VCLEVENT_WINDOW_SHOW)
                        {
                            // Instantiate text field.
                            getAccessibleChild (0);
                            aNewValue <<= m_xText;
                        }
                        else
                        {
                            // Release text field.
                            aOldValue <<= m_xText;
                            m_xText = NULL;
                        }
                        // Tell the listeners about the new/removed child.
                        NotifyAccessibleEvent (
                            AccessibleEventId::CHILD,
                            aOldValue, aNewValue);
                    }

            }
        }
        break;

        default:
            VCLXAccessibleComponent::ProcessWindowChildEvent (rVclWindowEvent);
    }
}

void VCLXAccessibleBox::ProcessWindowEvent (const VclWindowEvent& rVclWindowEvent)
{
    switch ( rVclWindowEvent.GetId() )
    {
        case VCLEVENT_DROPDOWN_SELECT:
        case VCLEVENT_LISTBOX_SELECT:
        case VCLEVENT_LISTBOX_FOCUSITEMCHANGED:
        {
            // Forward the call to the list child.
            VCLXAccessibleList* pList = static_cast<VCLXAccessibleList*>(m_xList.get());
            if ( pList == NULL )
            {
                getAccessibleChild ( m_bHasTextChild ? 1 : 0 );
                pList = static_cast<VCLXAccessibleList*>(m_xList.get());
            }
            if ( pList != NULL )
            {
                pList->ProcessWindowEvent (rVclWindowEvent, m_bIsDropDownBox);
#if defined WNT
                if (m_bIsDropDownBox)
                {
                    NotifyAccessibleEvent(AccessibleEventId::VALUE_CHANGED, Any(), Any());
                }
#endif
            }
            break;
        }
        case VCLEVENT_DROPDOWN_OPEN:
        {
            VCLXAccessibleList* pList = static_cast<VCLXAccessibleList*>(m_xList.get());
            if ( pList == NULL )
            {
                getAccessibleChild ( m_bHasTextChild ? 1 : 0 );
                pList = static_cast<VCLXAccessibleList*>(m_xList.get());
            }
            if ( pList != NULL )
            {
                pList->ProcessWindowEvent (rVclWindowEvent);
                pList->HandleDropOpen();
            }
            break;
        }
        case VCLEVENT_DROPDOWN_CLOSE:
        {
            VCLXAccessibleList* pList = static_cast<VCLXAccessibleList*>(m_xList.get());
            if ( pList == NULL )
            {
                getAccessibleChild ( m_bHasTextChild ? 1 : 0 );
                pList = static_cast<VCLXAccessibleList*>(m_xList.get());
            }
            if ( pList != NULL )
            {
                pList->ProcessWindowEvent (rVclWindowEvent);
            }
            vcl::Window* pWindow = GetWindow();
            if( pWindow && (pWindow->HasFocus() || pWindow->HasChildPathFocus()) )
            {
                Any aOldValue, aNewValue;
                aNewValue <<= AccessibleStateType::FOCUSED;
                NotifyAccessibleEvent( AccessibleEventId::STATE_CHANGED, aOldValue, aNewValue );
            }
            break;
        }
        case VCLEVENT_COMBOBOX_SELECT:
        {
            VCLXAccessibleList* pList = static_cast<VCLXAccessibleList*>(m_xList.get());
            if (pList != NULL && m_xText.is())
            {
                Reference<XAccessibleText> xText (m_xText->getAccessibleContext(), UNO_QUERY);
                if ( xText.is() )
                {
                    OUString sText = xText->getSelectedText();
                    if ( sText.isEmpty() )
                        sText = xText->getText();
                    pList->UpdateSelection_Acc(sText, m_bIsDropDownBox);
#if defined WNT
                    if (m_bIsDropDownBox || m_aBoxType==COMBOBOX)
                        NotifyAccessibleEvent(AccessibleEventId::VALUE_CHANGED, Any(), Any());
#endif
                }
            }
            break;
        }
        //case VCLEVENT_DROPDOWN_OPEN:
        //case VCLEVENT_DROPDOWN_CLOSE:
        case VCLEVENT_LISTBOX_DOUBLECLICK:
        case VCLEVENT_LISTBOX_SCROLLED:
        //case VCLEVENT_LISTBOX_SELECT:
        case VCLEVENT_LISTBOX_ITEMADDED:
        case VCLEVENT_LISTBOX_ITEMREMOVED:
        case VCLEVENT_COMBOBOX_ITEMADDED:
        case VCLEVENT_COMBOBOX_ITEMREMOVED:
        case VCLEVENT_COMBOBOX_SCROLLED:
        {
            // Forward the call to the list child.
            VCLXAccessibleList* pList = static_cast<VCLXAccessibleList*>(m_xList.get());
            if ( pList == NULL )
            {
                getAccessibleChild ( m_bHasTextChild ? 1 : 0 );
                pList = static_cast<VCLXAccessibleList*>(m_xList.get());
            }
            if ( pList != NULL )
                pList->ProcessWindowEvent (rVclWindowEvent);
            break;
        }

        //case VCLEVENT_COMBOBOX_SELECT:
        case VCLEVENT_COMBOBOX_DESELECT:
        {
            // Selection is handled by VCLXAccessibleList which operates on
            // the same VCL object as this box does.  In case of the
            // combobox, however, we have to help by providing the list with
            // the text of the currently selected item.
            VCLXAccessibleList* pList = static_cast<VCLXAccessibleList*>(m_xList.get());
            if (pList != NULL && m_xText.is())
            {
                Reference<XAccessibleText> xText (m_xText->getAccessibleContext(), UNO_QUERY);
                if ( xText.is() )
                {
                    OUString sText = xText->getSelectedText();
                    if ( sText.isEmpty() )
                        sText = xText->getText();
                    pList->UpdateSelection (sText);
                }
            }
            break;
        }

        case VCLEVENT_EDIT_MODIFY:
        case VCLEVENT_EDIT_SELECTIONCHANGED:
     // case VCLEVENT_EDIT_CARETCHANGED:
            // Modify/Selection events are handled by the combo box instead of
            // directly by the edit field (Why?).  Therefore, delegate this
            // call to the edit field.
            if (m_aBoxType==COMBOBOX)
            {
                if (m_xText.is())
                {
                    Reference<XAccessibleContext> xContext = m_xText->getAccessibleContext();
                    VCLXAccessibleEdit* pEdit = static_cast<VCLXAccessibleEdit*>(xContext.get());
                    if (pEdit != NULL)
                        pEdit->ProcessWindowEvent (rVclWindowEvent);
                }
            }
            break;
        default:
            VCLXAccessibleComponent::ProcessWindowEvent( rVclWindowEvent );
    }
}

IMPLEMENT_FORWARD_XINTERFACE2(VCLXAccessibleBox, VCLXAccessibleComponent, VCLXAccessibleBox_BASE)
IMPLEMENT_FORWARD_XTYPEPROVIDER2(VCLXAccessibleBox, VCLXAccessibleComponent, VCLXAccessibleBox_BASE)

//=====  XAccessible  =========================================================

Reference< XAccessibleContext > SAL_CALL VCLXAccessibleBox::getAccessibleContext(  )
    throw (RuntimeException, std::exception)
{
    ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );

    return this;
}

//=====  XAccessibleContext  ==================================================

sal_Int32 SAL_CALL VCLXAccessibleBox::getAccessibleChildCount()
    throw (RuntimeException, std::exception)
{
    SolarMutexGuard aSolarGuard;
    ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );

    // Usually a box has a text field and a list of items as its children.
    // Non drop down list boxes have no text field.  Additionally check
    // whether the object is valid.
    sal_Int32 nCount = 0;
    if (IsValid())
        nCount += (m_bHasTextChild?1:0) + (m_bHasListChild?1:0);
    else
    {
        // Object not valid anymore.  Release references to children.
        m_bHasTextChild = false;
        m_xText = NULL;
        m_bHasListChild = false;
        m_xList = NULL;
    }

    return nCount;
}

Reference<XAccessible> SAL_CALL VCLXAccessibleBox::getAccessibleChild (sal_Int32 i)
    throw (IndexOutOfBoundsException, RuntimeException, std::exception)
{
    SolarMutexGuard aSolarGuard;
    ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );

    if (i<0 || i>=getAccessibleChildCount())
        throw IndexOutOfBoundsException();

    Reference< XAccessible > xChild;
    if (IsValid())
    {
        if (i==1 || ! m_bHasTextChild)
        {
            // List.
            if ( ! m_xList.is())
            {
                VCLXAccessibleList* pList = new VCLXAccessibleList ( GetVCLXWindow(),
                    (m_aBoxType == LISTBOX ? VCLXAccessibleList::LISTBOX : VCLXAccessibleList::COMBOBOX),
                                                                    this);
                pList->SetIndexInParent (i);
                m_xList = pList;
            }
            xChild = m_xList;
        }
        else
        {
            // Text Field.
            if ( ! m_xText.is())
            {
                if (m_aBoxType==COMBOBOX)
                {
                    VclPtr< ComboBox > pComboBox = GetAs< ComboBox >();
                    if (pComboBox!=nullptr && pComboBox->GetSubEdit()!=NULL)
                    //Set the edit's acc name the same as parent
                    {
                        pComboBox->GetSubEdit()->SetAccessibleName(getAccessibleName());
                        m_xText = pComboBox->GetSubEdit()->GetAccessible();
                    }
                }
                else if (m_bIsDropDownBox)
                    m_xText = new VCLXAccessibleTextField (GetVCLXWindow(),this);
            }
            xChild = m_xText;
        }
    }

    return xChild;
}

sal_Int16 SAL_CALL VCLXAccessibleBox::getAccessibleRole() throw (RuntimeException, std::exception)
{
    ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );

    // Return the role <const>COMBO_BOX</const> for both VCL combo boxes and
    // VCL list boxes in DropDown-Mode else <const>PANEL</const>.
    // This way the Java bridge has not to handle both independently.
    //return m_bIsDropDownBox ? AccessibleRole::COMBO_BOX : AccessibleRole::PANEL;
    if (m_bIsDropDownBox || (!m_bIsDropDownBox && m_aBoxType == COMBOBOX ))
        return AccessibleRole::COMBO_BOX;
    else
        return AccessibleRole::PANEL;
}

sal_Int32 SAL_CALL VCLXAccessibleBox::getAccessibleIndexInParent()
    throw (css::uno::RuntimeException, std::exception)
{
    if (m_nIndexInParent != DEFAULT_INDEX_IN_PARENT)
        return m_nIndexInParent;
    else
        return VCLXAccessibleComponent::getAccessibleIndexInParent();
}

//=====  XAccessibleAction  ===================================================

sal_Int32 SAL_CALL VCLXAccessibleBox::getAccessibleActionCount()
    throw (RuntimeException, std::exception)
{
    ::osl::Guard< ::osl::Mutex> aGuard (GetMutex());

    // There is one action for drop down boxes (toggle popup) and none for
    // the other boxes.
    return m_bIsDropDownBox ? 1 : 0;
}

sal_Bool SAL_CALL VCLXAccessibleBox::doAccessibleAction (sal_Int32 nIndex)
    throw (IndexOutOfBoundsException, RuntimeException, std::exception)
{
    bool bNotify = false;

    {
        SolarMutexGuard aSolarGuard;
        ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );

        if (nIndex<0 || nIndex>=getAccessibleActionCount())
            throw css::lang::IndexOutOfBoundsException(
                ("VCLXAccessibleBox::doAccessibleAction: index "
                 + OUString::number(nIndex) + " not among 0.."
                 + OUString::number(getAccessibleActionCount())),
                static_cast<OWeakObject*>(this));

        if (m_aBoxType == COMBOBOX)
        {
            VclPtr< ComboBox > pComboBox = GetAs< ComboBox >();
            if (pComboBox != nullptr)
            {
                pComboBox->ToggleDropDown();
                bNotify = true;
            }
        }
        else if (m_aBoxType == LISTBOX)
        {
            VclPtr< ListBox > pListBox = GetAs< ListBox >();
            if (pListBox != nullptr)
            {
                pListBox->ToggleDropDown();
                bNotify = true;
            }
        }
    }

    if (bNotify)
        NotifyAccessibleEvent (AccessibleEventId::ACTION_CHANGED, Any(), Any());

    return bNotify;
}

OUString SAL_CALL VCLXAccessibleBox::getAccessibleActionDescription (sal_Int32 nIndex)
    throw (IndexOutOfBoundsException, RuntimeException, std::exception)
{
    ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );
    if (nIndex<0 || nIndex>=getAccessibleActionCount())
        throw css::lang::IndexOutOfBoundsException();

    if (m_bIsDropDownBox)
        return TK_RES_STRING(RID_STR_ACC_ACTION_TOGGLEPOPUP);

    return OUString();
}

Reference< XAccessibleKeyBinding > VCLXAccessibleBox::getAccessibleActionKeyBinding( sal_Int32 nIndex )
    throw (IndexOutOfBoundsException, RuntimeException, std::exception)
{
    ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );

    Reference< XAccessibleKeyBinding > xRet;

    if (nIndex<0 || nIndex>=getAccessibleActionCount())
        throw css::lang::IndexOutOfBoundsException();

    // ... which key?
    return xRet;
}

//=====  XComponent  ==========================================================

void SAL_CALL VCLXAccessibleBox::disposing()
{
    VCLXAccessibleComponent::disposing();
}

// =====  XAccessibleValue  ===============================================
Any VCLXAccessibleBox::getCurrentValue( )
    throw( RuntimeException, std::exception )
{
    SolarMutexGuard aSolarGuard;
    ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );

    Any aAny;
    if( m_xList.is() && m_xText.is())
    {
        // VCLXAccessibleList* pList = static_cast<VCLXAccessibleList*>(m_xList.get());
        Reference<XAccessibleText> xText (m_xText->getAccessibleContext(), UNO_QUERY);
        if ( xText.is() )
        {
            OUString sText = xText->getText();
            aAny <<= sText;
        }
    }
    if (m_aBoxType == LISTBOX && m_bIsDropDownBox  && m_xList.is() )
    {

        VCLXAccessibleList* pList = static_cast<VCLXAccessibleList*>(m_xList.get());
        if(pList->IsInDropDown())
        {
            if(pList->getSelectedAccessibleChildCount()>0)
            {
                Reference<XAccessibleContext> xName (pList->getSelectedAccessibleChild((sal_Int32)(0)), UNO_QUERY);
                if(xName.is())
                {
                    aAny <<= xName->getAccessibleName();
                }
            }
        }
    }

    return aAny;
}

sal_Bool VCLXAccessibleBox::setCurrentValue( const Any& aNumber )
    throw( RuntimeException, std::exception )
{
    SolarMutexGuard aSolarGuard;
    ::osl::Guard< ::osl::Mutex > aGuard( GetMutex() );

    OUString  fValue;
    bool bValid = (aNumber >>= fValue);
    if( bValid )
    {

    }
    return bValid;

}

Any VCLXAccessibleBox::getMaximumValue( )
    throw( RuntimeException, std::exception )
{
    Any aAny;
    return aAny;
}

Any VCLXAccessibleBox::getMinimumValue(  )
    throw( RuntimeException, std::exception )
{
    Any aAny;
    return aAny;
}

// Set the INDETERMINATE state when there is no selected item for combobox
void VCLXAccessibleBox::FillAccessibleStateSet( utl::AccessibleStateSetHelper& rStateSet )
{
    VCLXAccessibleComponent::FillAccessibleStateSet(rStateSet);
    if (m_aBoxType == COMBOBOX )
    {
        OUString sText;
        sal_Int32 nEntryCount = 0;
        VclPtr< ComboBox > pComboBox = GetAs< ComboBox >();
        if (pComboBox != nullptr)
        {
            Edit* pSubEdit = pComboBox->GetSubEdit();
            if ( pSubEdit)
                sText = pSubEdit->GetText();
            nEntryCount = pComboBox->GetEntryCount();
        }
        if ( sText.isEmpty() && nEntryCount > 0 )
            rStateSet.AddState(AccessibleStateType::INDETERMINATE);
    }
    else if (m_aBoxType == LISTBOX && m_bIsDropDownBox)
    {
        sal_Int32 nSelectedEntryCount = 0;
        VclPtr< ListBox > pListBox = GetAs< ListBox >();
        if (pListBox != nullptr && pListBox->GetEntryCount() > 0)
        {
            nSelectedEntryCount = pListBox->GetSelectEntryCount();
            if ( nSelectedEntryCount == 0)
                rStateSet.AddState(AccessibleStateType::INDETERMINATE);
        }
    }
}

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