Line data Source code
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 :
21 :
22 :
23 : // Global header
24 :
25 :
26 : #include <svl/itemset.hxx>
27 : #include <editeng/editdata.hxx>
28 : #include <editeng/outliner.hxx>
29 : #include <svx/svdmodel.hxx>
30 : #include <svx/svdobj.hxx>
31 : #include <svx/svdpool.hxx>
32 :
33 :
34 :
35 : // Project-local header
36 :
37 :
38 :
39 : #include "AccessibleEmptyEditSource.hxx"
40 : #include <svx/unoshtxt.hxx>
41 :
42 : namespace accessibility
43 : {
44 :
45 : /** This class simply wraps a SvxTextEditSource, forwarding all
46 : methods except the GetBroadcaster() call
47 : */
48 : class AccessibleProxyEditSource_Impl : public SvxEditSource
49 : {
50 : public:
51 : /** Construct AccessibleEmptyEditSource_Impl
52 :
53 : @param rBrdCast
54 :
55 : Proxy broadcaster to allow seamless flipping of edit source implementations. ProxyEditSource and EmptyEditSource
56 : */
57 : AccessibleProxyEditSource_Impl( SdrObject& rObj,
58 : SdrView& rView,
59 : const Window& rViewWindow );
60 : virtual ~AccessibleProxyEditSource_Impl();
61 :
62 : // from the SvxEditSource interface
63 : SvxTextForwarder* GetTextForwarder() SAL_OVERRIDE;
64 : SvxViewForwarder* GetViewForwarder() SAL_OVERRIDE;
65 : SvxEditViewForwarder* GetEditViewForwarder( bool bCreate = false ) SAL_OVERRIDE;
66 :
67 : SvxEditSource* Clone() const SAL_OVERRIDE;
68 :
69 : void UpdateData() SAL_OVERRIDE;
70 :
71 : SfxBroadcaster& GetBroadcaster() const SAL_OVERRIDE;
72 :
73 : private:
74 : SvxTextEditSource maEditSource;
75 :
76 : };
77 :
78 : /** Dummy class, faking exactly one empty paragraph for EditEngine accessibility
79 : */
80 : class AccessibleEmptyEditSource_Impl : public SvxEditSource, public SvxViewForwarder, public SvxTextForwarder, public SfxBroadcaster
81 : {
82 : public:
83 :
84 0 : AccessibleEmptyEditSource_Impl() {}
85 0 : virtual ~AccessibleEmptyEditSource_Impl() {}
86 :
87 : // SvxEditSource
88 0 : SvxTextForwarder* GetTextForwarder() SAL_OVERRIDE { return this; }
89 0 : SvxViewForwarder* GetViewForwarder() SAL_OVERRIDE { return this; }
90 0 : SvxEditSource* Clone() const SAL_OVERRIDE { return NULL; }
91 0 : void UpdateData() SAL_OVERRIDE {}
92 0 : SfxBroadcaster& GetBroadcaster() const SAL_OVERRIDE { return *(const_cast<AccessibleEmptyEditSource_Impl*>(this)); }
93 :
94 : // SvxTextForwarder
95 0 : sal_Int32 GetParagraphCount() const SAL_OVERRIDE { return 1; }
96 0 : sal_Int32 GetTextLen( sal_Int32 /*nParagraph*/ ) const SAL_OVERRIDE { return 0; }
97 0 : OUString GetText( const ESelection& /*rSel*/ ) const SAL_OVERRIDE { return OUString(); }
98 0 : SfxItemSet GetAttribs( const ESelection& /*rSel*/, EditEngineAttribs /*nOnlyHardAttrib*/ = EditEngineAttribs_All ) const SAL_OVERRIDE
99 : {
100 : // AW: Very dangerous: The former implementation used a SfxItemPool created on the
101 : // fly which of course was deleted again ASAP. Thus, the returned SfxItemSet was using
102 : // a deleted Pool by design.
103 0 : return SfxItemSet(SdrObject::GetGlobalDrawObjectItemPool());
104 : }
105 0 : SfxItemSet GetParaAttribs( sal_Int32 /*nPara*/ ) const SAL_OVERRIDE { return GetAttribs(ESelection()); }
106 0 : void SetParaAttribs( sal_Int32 /*nPara*/, const SfxItemSet& /*rSet*/ ) SAL_OVERRIDE {}
107 0 : void RemoveAttribs( const ESelection& /*rSelection*/, bool /*bRemoveParaAttribs*/, sal_uInt16 /*nWhich*/ ) SAL_OVERRIDE {}
108 0 : void GetPortions( sal_Int32 /*nPara*/, std::vector<sal_Int32>& /*rList*/ ) const SAL_OVERRIDE {}
109 :
110 0 : sal_uInt16 GetItemState( const ESelection& /*rSel*/, sal_uInt16 /*nWhich*/ ) const SAL_OVERRIDE { return 0; }
111 0 : sal_uInt16 GetItemState( sal_Int32 /*nPara*/, sal_uInt16 /*nWhich*/ ) const SAL_OVERRIDE { return 0; }
112 :
113 0 : SfxItemPool* GetPool() const SAL_OVERRIDE { return NULL; }
114 :
115 0 : void QuickInsertText( const OUString& /*rText*/, const ESelection& /*rSel*/ ) SAL_OVERRIDE {}
116 0 : void QuickInsertField( const SvxFieldItem& /*rFld*/, const ESelection& /*rSel*/ ) SAL_OVERRIDE {}
117 0 : void QuickSetAttribs( const SfxItemSet& /*rSet*/, const ESelection& /*rSel*/ ) SAL_OVERRIDE {}
118 0 : void QuickInsertLineBreak( const ESelection& /*rSel*/ ) SAL_OVERRIDE {}
119 :
120 0 : const SfxItemSet * GetEmptyItemSetPtr() SAL_OVERRIDE { return 0; }
121 :
122 0 : void AppendParagraph() SAL_OVERRIDE {}
123 0 : sal_Int32 AppendTextPortion( sal_Int32 /*nPara*/, const OUString & /*rText*/, const SfxItemSet & /*rSet*/ ) SAL_OVERRIDE { return 0; }
124 :
125 : //XTextCopy
126 0 : void CopyText(const SvxTextForwarder& ) SAL_OVERRIDE {}
127 :
128 0 : OUString CalcFieldValue( const SvxFieldItem& /*rField*/, sal_Int32 /*nPara*/, sal_Int32 /*nPos*/, Color*& /*rpTxtColor*/, Color*& /*rpFldColor*/ ) SAL_OVERRIDE
129 : {
130 0 : return OUString();
131 : }
132 0 : void FieldClicked( const SvxFieldItem&, sal_Int32, sal_Int32 ) SAL_OVERRIDE {;}
133 :
134 0 : bool IsValid() const SAL_OVERRIDE { return true; }
135 :
136 0 : LanguageType GetLanguage( sal_Int32, sal_Int32 ) const SAL_OVERRIDE { return LANGUAGE_DONTKNOW; }
137 0 : sal_Int32 GetFieldCount( sal_Int32 ) const SAL_OVERRIDE { return 0; }
138 0 : EFieldInfo GetFieldInfo( sal_Int32, sal_uInt16 ) const SAL_OVERRIDE { return EFieldInfo(); }
139 0 : EBulletInfo GetBulletInfo( sal_Int32 ) const SAL_OVERRIDE { return EBulletInfo(); }
140 0 : Rectangle GetCharBounds( sal_Int32, sal_Int32 ) const SAL_OVERRIDE { return Rectangle(); }
141 0 : Rectangle GetParaBounds( sal_Int32 ) const SAL_OVERRIDE { return Rectangle(); }
142 0 : MapMode GetMapMode() const SAL_OVERRIDE { return MapMode(); }
143 0 : OutputDevice* GetRefDevice() const SAL_OVERRIDE { return NULL; }
144 0 : bool GetIndexAtPoint( const Point&, sal_Int32&, sal_Int32& ) const SAL_OVERRIDE { return false; }
145 0 : bool GetWordIndices( sal_Int32, sal_Int32, sal_Int32&, sal_Int32& ) const SAL_OVERRIDE { return false; }
146 0 : bool GetAttributeRun( sal_Int32&, sal_Int32&, sal_Int32, sal_Int32, bool ) const SAL_OVERRIDE { return false; }
147 0 : sal_Int32 GetLineCount( sal_Int32 nPara ) const SAL_OVERRIDE { return nPara == 0 ? 1 : 0; }
148 0 : sal_Int32 GetLineLen( sal_Int32, sal_Int32 ) const SAL_OVERRIDE { return 0; }
149 0 : void GetLineBoundaries( /*out*/sal_Int32 & rStart, /*out*/sal_Int32 & rEnd, sal_Int32 /*nParagraph*/, sal_Int32 /*nLine*/ ) const SAL_OVERRIDE { rStart = rEnd = 0; }
150 0 : sal_Int32 GetLineNumberAtIndex( sal_Int32 /*nPara*/, sal_Int32 /*nIndex*/ ) const SAL_OVERRIDE { return 0; }
151 :
152 : // the following two methods would, strictly speaking, require
153 : // a switch to a real EditSource, too. Fortunately, the
154 : // AccessibleEditableTextPara implementation currently always
155 : // calls GetEditViewForwarder(true) before doing
156 : // changes. Thus, we rely on this behabviour here (problem
157 : // when that changes: via accessibility API, it would no
158 : // longer be possible to enter text in previously empty
159 : // shapes).
160 0 : bool Delete( const ESelection& ) SAL_OVERRIDE { return false; }
161 0 : bool InsertText( const OUString&, const ESelection& ) SAL_OVERRIDE { return false; }
162 0 : bool QuickFormatDoc( bool ) SAL_OVERRIDE { return true; }
163 0 : sal_Int16 GetDepth( sal_Int32 ) const SAL_OVERRIDE { return -1; }
164 0 : bool SetDepth( sal_Int32, sal_Int16 ) SAL_OVERRIDE { return true; }
165 :
166 0 : Rectangle GetVisArea() const SAL_OVERRIDE { return Rectangle(); }
167 0 : Point LogicToPixel( const Point& rPoint, const MapMode& /*rMapMode*/ ) const SAL_OVERRIDE { return rPoint; }
168 0 : Point PixelToLogic( const Point& rPoint, const MapMode& /*rMapMode*/ ) const SAL_OVERRIDE { return rPoint; }
169 :
170 : };
171 :
172 :
173 : // Implementing AccessibleProxyEditSource_Impl
174 :
175 :
176 0 : AccessibleProxyEditSource_Impl::AccessibleProxyEditSource_Impl( SdrObject& rObj,
177 : SdrView& rView,
178 : const Window& rViewWindow ) :
179 0 : maEditSource( rObj, 0, rView, rViewWindow )
180 : {
181 0 : }
182 :
183 0 : AccessibleProxyEditSource_Impl::~AccessibleProxyEditSource_Impl()
184 : {
185 0 : }
186 :
187 0 : SvxTextForwarder* AccessibleProxyEditSource_Impl::GetTextForwarder()
188 : {
189 0 : return maEditSource.GetTextForwarder();
190 : }
191 :
192 0 : SvxViewForwarder* AccessibleProxyEditSource_Impl::GetViewForwarder()
193 : {
194 0 : return maEditSource.GetViewForwarder();
195 : }
196 :
197 0 : SvxEditViewForwarder* AccessibleProxyEditSource_Impl::GetEditViewForwarder( bool bCreate )
198 : {
199 0 : return maEditSource.GetEditViewForwarder( bCreate );
200 : }
201 :
202 0 : SvxEditSource* AccessibleProxyEditSource_Impl::Clone() const
203 : {
204 0 : return maEditSource.Clone();
205 : }
206 :
207 0 : void AccessibleProxyEditSource_Impl::UpdateData()
208 : {
209 0 : maEditSource.UpdateData();
210 0 : }
211 :
212 0 : SfxBroadcaster& AccessibleProxyEditSource_Impl::GetBroadcaster() const
213 : {
214 0 : return maEditSource.GetBroadcaster();
215 : }
216 :
217 :
218 :
219 : // Implementing AccessibleEmptyEditSource
220 :
221 :
222 0 : AccessibleEmptyEditSource::AccessibleEmptyEditSource( SdrObject& rObj,
223 : SdrView& rView,
224 : const Window& rViewWindow ) :
225 0 : mpEditSource( new AccessibleEmptyEditSource_Impl() ),
226 : mrObj(rObj),
227 : mrView(rView),
228 : mrViewWindow(rViewWindow),
229 0 : mbEditSourceEmpty( true )
230 : {
231 0 : if( mrObj.GetModel() )
232 0 : StartListening( *mrObj.GetModel() );
233 0 : }
234 :
235 0 : AccessibleEmptyEditSource::~AccessibleEmptyEditSource()
236 : {
237 0 : if( !mbEditSourceEmpty )
238 : {
239 : // deregister as listener
240 0 : if( mpEditSource.get() )
241 0 : EndListening( mpEditSource->GetBroadcaster() );
242 : }
243 : else
244 : {
245 0 : if( mrObj.GetModel() )
246 0 : EndListening( *mrObj.GetModel() );
247 : }
248 0 : }
249 :
250 0 : SvxTextForwarder* AccessibleEmptyEditSource::GetTextForwarder()
251 : {
252 0 : if( !mpEditSource.get() )
253 0 : return NULL;
254 :
255 0 : return mpEditSource->GetTextForwarder();
256 : }
257 :
258 0 : SvxViewForwarder* AccessibleEmptyEditSource::GetViewForwarder()
259 : {
260 0 : if( !mpEditSource.get() )
261 0 : return NULL;
262 :
263 0 : return mpEditSource->GetViewForwarder();
264 : }
265 :
266 0 : void AccessibleEmptyEditSource::Switch2ProxyEditSource()
267 : {
268 : // deregister EmptyEditSource model listener
269 0 : if( mrObj.GetModel() )
270 0 : EndListening( *mrObj.GetModel() );
271 :
272 : SAL_WNODEPRECATED_DECLARATIONS_PUSH
273 0 : ::std::auto_ptr< SvxEditSource > pProxySource( new AccessibleProxyEditSource_Impl(mrObj, mrView, mrViewWindow) );
274 0 : ::std::auto_ptr< SvxEditSource > tmp = mpEditSource;
275 : SAL_WNODEPRECATED_DECLARATIONS_POP
276 0 : mpEditSource = pProxySource;
277 0 : pProxySource = tmp;
278 :
279 : // register as listener
280 0 : StartListening( mpEditSource->GetBroadcaster() );
281 :
282 : // we've irrevocably a full EditSource now.
283 0 : mbEditSourceEmpty = false;
284 0 : }
285 :
286 0 : SvxEditViewForwarder* AccessibleEmptyEditSource::GetEditViewForwarder( bool bCreate )
287 : {
288 0 : if( !mpEditSource.get() )
289 0 : return NULL;
290 :
291 : // switch edit source, if not yet done
292 0 : if( mbEditSourceEmpty && bCreate )
293 0 : Switch2ProxyEditSource();
294 :
295 0 : return mpEditSource->GetEditViewForwarder( bCreate );
296 : }
297 :
298 0 : SvxEditSource* AccessibleEmptyEditSource::Clone() const
299 : {
300 0 : if( !mpEditSource.get() )
301 0 : return NULL;
302 :
303 0 : return mpEditSource->Clone();
304 : }
305 :
306 0 : void AccessibleEmptyEditSource::UpdateData()
307 : {
308 0 : if( mpEditSource.get() )
309 0 : mpEditSource->UpdateData();
310 0 : }
311 :
312 0 : SfxBroadcaster& AccessibleEmptyEditSource::GetBroadcaster() const
313 : {
314 0 : return *(const_cast<AccessibleEmptyEditSource*>(this));
315 : }
316 :
317 0 : void AccessibleEmptyEditSource::Notify( SfxBroadcaster& /*rBC*/, const SfxHint& rHint )
318 : {
319 0 : const SdrHint* pSdrHint = PTR_CAST( SdrHint, &rHint );
320 :
321 0 : if( pSdrHint && pSdrHint->GetKind() == HINT_BEGEDIT &&
322 0 : &mrObj == pSdrHint->GetObject() && mpEditSource.get() )
323 : {
324 : // switch edit source, if not yet done. This is necessary
325 : // to become a full-fledged EditSource the first time a
326 : // user start entering text in a previously empty object.
327 0 : if( mbEditSourceEmpty )
328 0 : Switch2ProxyEditSource();
329 : }
330 0 : else if (pSdrHint && pSdrHint->GetObject()!=NULL)
331 : {
332 : // When the SdrObject just got a para outliner object then
333 : // switch the edit source.
334 0 : if (pSdrHint->GetObject()->GetOutlinerParaObject() != NULL)
335 0 : Switch2ProxyEditSource();
336 : }
337 :
338 : // forward messages
339 0 : Broadcast( rHint );
340 0 : }
341 :
342 : } // end of namespace accessibility
343 :
344 :
345 :
346 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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