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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include <com/sun/star/accessibility/XAccessibleSelection.hpp>
21 : #include <accselectionhelper.hxx>
22 :
23 : #include <acccontext.hxx>
24 : #include <accmap.hxx>
25 : #include <svx/AccessibleShape.hxx>
26 : #include <viewsh.hxx>
27 : #include <fesh.hxx>
28 : #include <vcl/svapp.hxx> // for SolarMutex
29 : #include <flyfrm.hxx>
30 :
31 :
32 : using namespace ::com::sun::star;
33 : using namespace ::com::sun::star::uno;
34 :
35 : using ::com::sun::star::accessibility::XAccessible;
36 : using ::com::sun::star::accessibility::XAccessibleContext;
37 : using ::com::sun::star::accessibility::XAccessibleSelection;
38 :
39 : using namespace ::sw::access;
40 :
41 29 : SwAccessibleSelectionHelper::SwAccessibleSelectionHelper(
42 : SwAccessibleContext& rCtxt ) :
43 29 : rContext( rCtxt )
44 : {
45 29 : }
46 :
47 29 : SwAccessibleSelectionHelper::~SwAccessibleSelectionHelper()
48 : {
49 29 : }
50 :
51 10 : SwFEShell* SwAccessibleSelectionHelper::GetFEShell()
52 : {
53 : OSL_ENSURE( rContext.GetMap() != NULL, "no map?" );
54 10 : ViewShell* pViewShell = rContext.GetMap()->GetShell();
55 : OSL_ENSURE( pViewShell != NULL,
56 : "No view shell? Then what are you looking at?" );
57 :
58 10 : SwFEShell* pFEShell = NULL;
59 10 : if( pViewShell->ISA( SwFEShell ) )
60 : {
61 10 : pFEShell = static_cast<SwFEShell*>( pViewShell );
62 : }
63 :
64 10 : return pFEShell;
65 : }
66 :
67 8 : void SwAccessibleSelectionHelper::throwIndexOutOfBoundsException()
68 : throw ( lang::IndexOutOfBoundsException )
69 : {
70 8 : Reference < XAccessibleContext > xThis( &rContext );
71 16 : Reference < XAccessibleSelection >xSelThis( xThis, UNO_QUERY );
72 : lang::IndexOutOfBoundsException aExcept(
73 : OUString( "index out of bounds" ),
74 16 : xSelThis ); \
75 16 : throw aExcept;
76 : }
77 :
78 :
79 : // XAccessibleSelection
80 2 : void SwAccessibleSelectionHelper::selectAccessibleChild(
81 : sal_Int32 nChildIndex )
82 : throw ( lang::IndexOutOfBoundsException,
83 : RuntimeException )
84 : {
85 2 : SolarMutexGuard aGuard;
86 :
87 : // Get the respective child as SwFrm (also do index checking), ...
88 2 : const SwAccessibleChild aChild = rContext.GetChild( *(rContext.GetMap()),
89 2 : nChildIndex );
90 2 : if( !aChild.IsValid() )
91 2 : throwIndexOutOfBoundsException();
92 :
93 : // we can only select fly frames, so we ignore (should: return
94 : // false) all other attempts at child selection
95 0 : SwFEShell* pFEShell = GetFEShell();
96 0 : if( pFEShell != NULL )
97 : {
98 0 : const SdrObject *pObj = aChild.GetDrawObject();
99 0 : if( pObj )
100 0 : rContext.Select( const_cast< SdrObject *>( pObj ), 0==aChild.GetSwFrm());
101 2 : }
102 : // no frame shell, or no frame, or no fly frame -> can't select
103 0 : }
104 :
105 2 : sal_Bool SwAccessibleSelectionHelper::isAccessibleChildSelected(
106 : sal_Int32 nChildIndex )
107 : throw ( lang::IndexOutOfBoundsException,
108 : RuntimeException )
109 : {
110 2 : SolarMutexGuard aGuard;
111 :
112 : // Get the respective child as SwFrm (also do index checking), ...
113 2 : const SwAccessibleChild aChild = rContext.GetChild( *(rContext.GetMap()),
114 2 : nChildIndex );
115 2 : if( !aChild.IsValid() )
116 2 : throwIndexOutOfBoundsException();
117 :
118 : // ... and compare to the currently selected frame
119 0 : sal_Bool bRet = sal_False;
120 0 : SwFEShell* pFEShell = GetFEShell();
121 0 : if( pFEShell )
122 : {
123 0 : if ( aChild.GetSwFrm() != 0 )
124 : {
125 0 : bRet = (pFEShell->GetCurrFlyFrm() == aChild.GetSwFrm());
126 : }
127 0 : else if ( aChild.GetDrawObject() )
128 : {
129 0 : bRet = pFEShell->IsObjSelected( *aChild.GetDrawObject() );
130 : }
131 : }
132 :
133 0 : return bRet;
134 : }
135 :
136 2 : void SwAccessibleSelectionHelper::clearAccessibleSelection( )
137 : throw ( RuntimeException )
138 : {
139 : // return sal_False // we can't deselect
140 2 : }
141 :
142 3 : void SwAccessibleSelectionHelper::selectAllAccessibleChildren( )
143 : throw ( RuntimeException )
144 : {
145 3 : SolarMutexGuard aGuard;
146 :
147 : // We can select only one. So iterate over the children to find
148 : // the first we can select, and select it.
149 :
150 3 : SwFEShell* pFEShell = GetFEShell();
151 3 : if( pFEShell )
152 : {
153 3 : ::std::list< SwAccessibleChild > aChildren;
154 3 : rContext.GetChildren( *(rContext.GetMap()), aChildren );
155 :
156 3 : ::std::list< SwAccessibleChild >::const_iterator aIter = aChildren.begin();
157 3 : ::std::list< SwAccessibleChild >::const_iterator aEndIter = aChildren.end();
158 6 : while( aIter != aEndIter )
159 : {
160 0 : const SwAccessibleChild& rChild = *aIter;
161 0 : const SdrObject* pObj = rChild.GetDrawObject();
162 0 : const SwFrm* pFrm = rChild.GetSwFrm();
163 0 : if( pObj && !(pFrm != 0 && pFEShell->IsObjSelected()) )
164 : {
165 0 : rContext.Select( const_cast< SdrObject *>( pObj ), 0==pFrm );
166 0 : if( pFrm )
167 0 : break;
168 : }
169 0 : ++aIter;
170 3 : }
171 3 : }
172 3 : }
173 :
174 5 : sal_Int32 SwAccessibleSelectionHelper::getSelectedAccessibleChildCount( )
175 : throw ( RuntimeException )
176 : {
177 5 : SolarMutexGuard aGuard;
178 :
179 5 : sal_Int32 nCount = 0;
180 : // Only one frame can be selected at a time, and we only frames
181 : // for selectable children.
182 5 : SwFEShell* pFEShell = GetFEShell();
183 5 : if( pFEShell != 0 )
184 : {
185 5 : const SwFlyFrm* pFlyFrm = pFEShell->GetCurrFlyFrm();
186 5 : if( pFlyFrm )
187 : {
188 0 : if( rContext.GetParent( SwAccessibleChild(pFlyFrm), rContext.IsInPagePreview()) ==
189 0 : rContext.GetFrm() )
190 : {
191 0 : nCount = 1;
192 : }
193 : }
194 : else
195 : {
196 5 : sal_uInt16 nSelObjs = pFEShell->IsObjSelected();
197 5 : if( nSelObjs > 0 )
198 : {
199 0 : ::std::list< SwAccessibleChild > aChildren;
200 0 : rContext.GetChildren( *(rContext.GetMap()), aChildren );
201 :
202 : ::std::list< SwAccessibleChild >::const_iterator aIter =
203 0 : aChildren.begin();
204 : ::std::list< SwAccessibleChild >::const_iterator aEndIter =
205 0 : aChildren.end();
206 0 : while( aIter != aEndIter && nCount < nSelObjs )
207 : {
208 0 : const SwAccessibleChild& rChild = *aIter;
209 0 : if( rChild.GetDrawObject() && !rChild.GetSwFrm() &&
210 0 : rContext.GetParent(rChild, rContext.IsInPagePreview())
211 0 : == rContext.GetFrm() &&
212 0 : pFEShell->IsObjSelected( *rChild.GetDrawObject() ) )
213 : {
214 0 : nCount++;
215 : }
216 0 : ++aIter;
217 0 : }
218 : }
219 : }
220 : }
221 5 : return nCount;
222 : }
223 :
224 2 : Reference<XAccessible> SwAccessibleSelectionHelper::getSelectedAccessibleChild(
225 : sal_Int32 nSelectedChildIndex )
226 : throw ( lang::IndexOutOfBoundsException,
227 : RuntimeException)
228 : {
229 2 : SolarMutexGuard aGuard;
230 :
231 : // Since the index is relative to the selected children, and since
232 : // there can be at most one selected frame child, the index must
233 : // be 0, and a selection must exist, otherwise we have to throw an
234 : // lang::IndexOutOfBoundsException
235 2 : SwFEShell* pFEShell = GetFEShell();
236 2 : if( 0 == pFEShell )
237 0 : throwIndexOutOfBoundsException();
238 :
239 2 : SwAccessibleChild aChild;
240 2 : const SwFlyFrm *pFlyFrm = pFEShell->GetCurrFlyFrm();
241 2 : if( pFlyFrm )
242 : {
243 0 : if( 0 == nSelectedChildIndex &&
244 0 : rContext.GetParent( SwAccessibleChild(pFlyFrm), rContext.IsInPagePreview()) ==
245 0 : rContext.GetFrm() )
246 : {
247 0 : aChild = pFlyFrm;
248 : }
249 : }
250 : else
251 : {
252 2 : sal_uInt16 nSelObjs = pFEShell->IsObjSelected();
253 2 : if( 0 == nSelObjs || nSelectedChildIndex >= nSelObjs )
254 2 : throwIndexOutOfBoundsException();
255 :
256 0 : ::std::list< SwAccessibleChild > aChildren;
257 0 : rContext.GetChildren( *(rContext.GetMap()), aChildren );
258 :
259 0 : ::std::list< SwAccessibleChild >::const_iterator aIter = aChildren.begin();
260 0 : ::std::list< SwAccessibleChild >::const_iterator aEndIter = aChildren.end();
261 0 : while( aIter != aEndIter && !aChild.IsValid() )
262 : {
263 0 : const SwAccessibleChild& rChild = *aIter;
264 0 : if( rChild.GetDrawObject() && !rChild.GetSwFrm() &&
265 0 : rContext.GetParent(rChild, rContext.IsInPagePreview()) ==
266 0 : rContext.GetFrm() &&
267 0 : pFEShell->IsObjSelected( *rChild.GetDrawObject() ) )
268 : {
269 0 : if( 0 == nSelectedChildIndex )
270 0 : aChild = rChild;
271 : else
272 0 : --nSelectedChildIndex;
273 : }
274 0 : ++aIter;
275 0 : }
276 : }
277 :
278 0 : if( !aChild.IsValid() )
279 0 : throwIndexOutOfBoundsException();
280 :
281 : OSL_ENSURE( rContext.GetMap() != NULL, "We need the map." );
282 0 : Reference< XAccessible > xChild;
283 0 : if( aChild.GetSwFrm() )
284 : {
285 : ::rtl::Reference < SwAccessibleContext > xChildImpl(
286 : rContext.GetMap()->GetContextImpl( aChild.GetSwFrm(),
287 0 : sal_True ) );
288 0 : if( xChildImpl.is() )
289 : {
290 0 : xChildImpl->SetParent( &rContext );
291 0 : xChild = xChildImpl.get();
292 0 : }
293 : }
294 0 : else if ( aChild.GetDrawObject() )
295 : {
296 : ::rtl::Reference < ::accessibility::AccessibleShape > xChildImpl(
297 : rContext.GetMap()->GetContextImpl( aChild.GetDrawObject(),
298 0 : &rContext, sal_True ) );
299 0 : if( xChildImpl.is() )
300 0 : xChild = xChildImpl.get();
301 : }
302 2 : return xChild;
303 : }
304 :
305 : // index has to be treated as global child index.
306 2 : void SwAccessibleSelectionHelper::deselectAccessibleChild(
307 : sal_Int32 nChildIndex )
308 : throw ( lang::IndexOutOfBoundsException,
309 : RuntimeException )
310 : {
311 3 : if( nChildIndex < 0 ||
312 1 : nChildIndex >= rContext.GetChildCount( *(rContext.GetMap()) ) )
313 2 : throwIndexOutOfBoundsException();
314 99 : }
315 :
316 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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