Bug Summary

File:home/maarten/src/libreoffice/core/include/rtl/ref.hxx
Warning:line 192, column 9
Use of memory after it is freed

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-unknown-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name dbtreelistbox.cxx -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -mframe-pointer=all -fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /usr/lib64/clang/11.0.0 -D BOOST_ERROR_CODE_HEADER_ONLY -D BOOST_SYSTEM_NO_DEPRECATED -D CPPU_ENV=gcc3 -D LINUX -D OSL_DEBUG_LEVEL=1 -D SAL_LOG_INFO -D SAL_LOG_WARN -D UNIX -D UNX -D X86_64 -D _PTHREADS -D _REENTRANT -D DBACCESS_DLLIMPLEMENTATION -D EXCEPTIONS_ON -D LIBO_INTERNAL_ONLY -I /home/maarten/src/libreoffice/core/external/unixODBC/inc -I /home/maarten/src/libreoffice/core/external/boost/include -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/boost -I /home/maarten/src/libreoffice/core/include -I /usr/lib/jvm/java-11-openjdk-11.0.9.10-0.0.ea.fc33.x86_64/include -I /usr/lib/jvm/java-11-openjdk-11.0.9.10-0.0.ea.fc33.x86_64/include/linux -I /home/maarten/src/libreoffice/core/config_host -I /home/maarten/src/libreoffice/core/dbaccess/inc -I /home/maarten/src/libreoffice/core/dbaccess/source/inc -I /home/maarten/src/libreoffice/core/dbaccess/source/ui/inc -I /home/maarten/src/libreoffice/core/workdir/YaccTarget/connectivity/source/parse -I /home/maarten/src/libreoffice/core/workdir/CustomTarget/officecfg/registry -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/udkapi/normal -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/offapi/normal -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10 -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10/x86_64-redhat-linux -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10/backward -internal-isystem /usr/local/include -internal-isystem /usr/lib64/clang/11.0.0/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -O0 -Wno-missing-braces -std=c++17 -fdeprecated-macro -fdebug-compilation-dir /home/maarten/src/libreoffice/core -ferror-limit 19 -fvisibility hidden -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcxx-exceptions -fexceptions -debug-info-kind=constructor -analyzer-output=html -faddrsig -o /home/maarten/tmp/wis/scan-build-libreoffice/output/report/2020-10-07-141433-9725-1 -x c++ /home/maarten/src/libreoffice/core/dbaccess/source/ui/control/dbtreelistbox.cxx

/home/maarten/src/libreoffice/core/dbaccess/source/ui/control/dbtreelistbox.cxx

→
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 <dbtreelistbox.hxx>
21#include <callbacks.hxx>
22
23#include <com/sun/star/ui/XContextMenuInterceptor.hpp>
24#include <com/sun/star/uno/XComponentContext.hpp>
25#include <com/sun/star/frame/XController.hpp>
26#include <com/sun/star/lang/IllegalArgumentException.hpp>
27#include <cppuhelper/implbase.hxx>
28#include <comphelper/interfacecontainer2.hxx>
29#include <comphelper/processfactory.hxx>
30#include <comphelper/propertyvalue.hxx>
31#include <dbaccess/IController.hxx>
32#include <framework/actiontriggerhelper.hxx>
33#include <toolkit/awt/vclxmenu.hxx>
34#include <toolkit/helper/vclunohelper.hxx>
35#include <svx/dbaobjectex.hxx>
36#include <vcl/commandevent.hxx>
37#include <vcl/event.hxx>
38#include <vcl/help.hxx>
39#include <vcl/menu.hxx>
40#include <vcl/svapp.hxx>
41
42#include <memory>
43
44namespace dbaui
45{
46
47using namespace ::com::sun::star;
48using namespace ::com::sun::star::uno;
49using namespace ::com::sun::star::beans;
50using namespace ::com::sun::star::lang;
51using namespace ::com::sun::star::datatransfer;
52using namespace ::com::sun::star::ui;
53using namespace ::com::sun::star::view;
54
55InterimDBTreeListBox::InterimDBTreeListBox(vcl::Window* pParent, bool bSQLType)
56 : InterimItemWindow(pParent, "dbaccess/ui/dbtreelist.ui", "DBTreeList")
57 , TreeListBox(m_xBuilder->weld_tree_view("treeview"), bSQLType)
58{
59 InitControlBase(&GetWidget());
60}
61
62InterimDBTreeListBox::~InterimDBTreeListBox()
63{
64 disposeOnce();
65}
66
67void InterimDBTreeListBox::dispose()
68{
69 implStopSelectionTimer();
70 m_xTreeView.reset();
71 InterimItemWindow::dispose();
72}
73
74bool InterimDBTreeListBox::DoChildKeyInput(const KeyEvent& rKEvt)
75{
76 return ChildKeyInput(rKEvt);
77}
78
79TreeListBoxDropTarget::TreeListBoxDropTarget(TreeListBox& rTreeView)
80 : DropTargetHelper(rTreeView.GetWidget().get_drop_target())
81 , m_rTreeView(rTreeView)
82{
83}
84
85sal_Int8 TreeListBoxDropTarget::AcceptDrop(const AcceptDropEvent& rEvt)
86{
87 sal_Int8 nAccept = m_rTreeView.AcceptDrop(rEvt);
88
89 if (nAccept != DND_ACTION_NONEcss::datatransfer::dnd::DNDConstants::ACTION_NONE)
90 {
91 // to enable the autoscroll when we're close to the edges
92 weld::TreeView& rWidget = m_rTreeView.GetWidget();
93 rWidget.get_dest_row_at_pos(rEvt.maPosPixel, nullptr, true);
94 }
95
96 return nAccept;
97}
98
99sal_Int8 TreeListBoxDropTarget::ExecuteDrop(const ExecuteDropEvent& rEvt)
100{
101 return m_rTreeView.ExecuteDrop(rEvt);
102}
103
104TreeListBox::TreeListBox(std::unique_ptr<weld::TreeView> xTreeView, bool bSQLType)
105 : m_xTreeView(std::move(xTreeView))
106 , m_aDropTargetHelper(*this)
107 , m_pActionListener(nullptr)
108 , m_pContextMenuProvider(nullptr)
109{
110 m_xTreeView->connect_key_press(LINK(this, TreeListBox, KeyInputHdl)::tools::detail::makeLink( ::tools::detail::castTo<TreeListBox
*>(this), &TreeListBox::LinkStubKeyInputHdl));
111 m_xTreeView->connect_changed(LINK(this, TreeListBox, SelectHdl)::tools::detail::makeLink( ::tools::detail::castTo<TreeListBox
*>(this), &TreeListBox::LinkStubSelectHdl));
112 m_xTreeView->connect_query_tooltip(LINK(this, TreeListBox, QueryTooltipHdl)::tools::detail::makeLink( ::tools::detail::castTo<TreeListBox
*>(this), &TreeListBox::LinkStubQueryTooltipHdl));
113 m_xTreeView->connect_popup_menu(LINK(this, TreeListBox, CommandHdl)::tools::detail::makeLink( ::tools::detail::castTo<TreeListBox
*>(this), &TreeListBox::LinkStubCommandHdl));
114
115 if (bSQLType)
116 m_xHelper.set(new ODataClipboard);
117 else
118 m_xHelper.set(new svx::OComponentTransferable);
119 m_xTreeView->enable_drag_source(m_xHelper, DND_ACTION_COPYcss::datatransfer::dnd::DNDConstants::ACTION_COPY);
120 m_xTreeView->connect_drag_begin(LINK(this, TreeListBox, DragBeginHdl)::tools::detail::makeLink( ::tools::detail::castTo<TreeListBox
*>(this), &TreeListBox::LinkStubDragBeginHdl));
121
122 m_aTimer.SetTimeout(900);
123 m_aTimer.SetInvokeHandler(LINK(this, TreeListBox, OnTimeOut)::tools::detail::makeLink( ::tools::detail::castTo<TreeListBox
*>(this), &TreeListBox::LinkStubOnTimeOut));
124}
125
126bool TreeListBox::DoChildKeyInput(const KeyEvent& /*rKEvt*/)
127{
128 // nothing by default
129 return false;
130}
131
132IMPL_LINK(TreeListBox, KeyInputHdl, const KeyEvent&, rKEvt, bool)bool TreeListBox::LinkStubKeyInputHdl(void * instance, const KeyEvent
& data) { return static_cast<TreeListBox *>(instance
)->KeyInputHdl(data); } bool TreeListBox::KeyInputHdl(const
KeyEvent& rKEvt)
133{
134 KeyFuncType eFunc = rKEvt.GetKeyCode().GetFunction();
135 bool bHandled = false;
136
137 switch (eFunc)
138 {
139 case KeyFuncType::COPY:
140 bHandled = m_aCopyHandler.IsSet() && !m_xTreeView->get_selected(nullptr);
141 if (bHandled)
142 m_aCopyHandler.Call(nullptr);
143 break;
144 case KeyFuncType::PASTE:
145 bHandled = m_aPasteHandler.IsSet() && !m_xTreeView->get_selected(nullptr);
146 if (bHandled)
147 m_aPasteHandler.Call(nullptr);
148 break;
149 case KeyFuncType::DELETE:
150 bHandled = m_aDeleteHandler.IsSet() && !m_xTreeView->get_selected(nullptr);
151 if (bHandled)
152 m_aDeleteHandler.Call(nullptr);
153 break;
154 default:
155 break;
156 }
157
158 return bHandled || DoChildKeyInput(rKEvt);
159}
160
161void TreeListBox::implStopSelectionTimer()
162{
163 if ( m_aTimer.IsActive() )
164 m_aTimer.Stop();
165}
166
167void TreeListBox::implStartSelectionTimer()
168{
169 implStopSelectionTimer();
170 m_aTimer.Start();
171}
172
173IMPL_LINK_NOARG(TreeListBox, SelectHdl, weld::TreeView&, void)void TreeListBox::LinkStubSelectHdl(void * instance, weld::TreeView
& data) { return static_cast<TreeListBox *>(instance
)->SelectHdl(data); } void TreeListBox::SelectHdl(__attribute__
((unused)) weld::TreeView&)
174{
175 implStartSelectionTimer();
176}
177
178TreeListBox::~TreeListBox()
179{
180}
181
182std::unique_ptr<weld::TreeIter> TreeListBox::GetEntryPosByName(const OUString& aName, const weld::TreeIter* pStart, const IEntryFilter* _pFilter) const
183{
184 auto xEntry(m_xTreeView->make_iterator(pStart));
185 if (!pStart && !m_xTreeView->get_iter_first(*xEntry))
186 return nullptr;
187
188 do
189 {
190 if (m_xTreeView->get_text(*xEntry) == aName)
191 {
192 if (!_pFilter || _pFilter->includeEntry(reinterpret_cast<void*>(m_xTreeView->get_id(*xEntry).toUInt64())))
193 {
194 // found
195 return xEntry;
196 }
197 }
198 } while (m_xTreeView->iter_next(*xEntry));
199
200 return nullptr;
201}
202
203IMPL_LINK(TreeListBox, DragBeginHdl, bool&, rUnsetDragIcon, bool)bool TreeListBox::LinkStubDragBeginHdl(void * instance, bool&
data) { return static_cast<TreeListBox *>(instance)->
DragBeginHdl(data); } bool TreeListBox::DragBeginHdl(bool&
rUnsetDragIcon)
204{
205 rUnsetDragIcon = false;
206
207 if (m_pActionListener)
208 {
209 m_xDragedEntry = m_xTreeView->make_iterator();
210 if (!m_xTreeView->get_selected(m_xDragedEntry.get()))
211 m_xDragedEntry.reset();
212 if (m_xDragedEntry && m_pActionListener->requestDrag(*m_xDragedEntry))
213 {
214 // if the (asynchronous) drag started, stop the selection timer
215 implStopSelectionTimer();
216 return false;
217 }
218 }
219
220 return true;
221}
222
223sal_Int8 TreeListBox::AcceptDrop(const AcceptDropEvent& rEvt)
224{
225 sal_Int8 nDropOption = DND_ACTION_NONEcss::datatransfer::dnd::DNDConstants::ACTION_NONE;
226 if ( m_pActionListener )
227 {
228 ::Point aDropPos = rEvt.maPosPixel;
229 std::unique_ptr<weld::TreeIter> xDropTarget(m_xTreeView->make_iterator());
230 if (!m_xTreeView->get_dest_row_at_pos(aDropPos, xDropTarget.get(), true))
231 xDropTarget.reset();
232
233 // check if drag is on child entry, which is not allowed
234 std::unique_ptr<weld::TreeIter> xParent;
235 if (rEvt.mnAction & DND_ACTION_MOVEcss::datatransfer::dnd::DNDConstants::ACTION_MOVE)
236 {
237 if (!m_xDragedEntry) // no entry to move
238 return m_pActionListener->queryDrop(rEvt, m_aDropTargetHelper.GetDataFlavorExVector());
239
240 if (xDropTarget)
241 {
242 xParent = m_xTreeView->make_iterator(xDropTarget.get());
243 if (!m_xTreeView->iter_parent(*xParent))
244 xParent.reset();
245 }
246 while (xParent && m_xTreeView->iter_compare(*xParent, *m_xDragedEntry) != 0)
247 {
248 if (!m_xTreeView->iter_parent(*xParent))
249 xParent.reset();
250 }
251 }
252
253 if (!xParent)
254 {
255 nDropOption = m_pActionListener->queryDrop(rEvt, m_aDropTargetHelper.GetDataFlavorExVector());
256 // check if move is allowed
257 if ( nDropOption & DND_ACTION_MOVEcss::datatransfer::dnd::DNDConstants::ACTION_MOVE )
258 {
259 if (!m_xDragedEntry || !xDropTarget ||
260 m_xTreeView->iter_compare(*m_xDragedEntry, *xDropTarget) == 0 ||
261 GetEntryPosByName(m_xTreeView->get_text(*m_xDragedEntry), xDropTarget.get()))
262 {
263 nDropOption = nDropOption & ~DND_ACTION_MOVEcss::datatransfer::dnd::DNDConstants::ACTION_MOVE;//DND_ACTION_NONE;
264 }
265 }
266 }
267 }
268
269 return nDropOption;
270}
271
272sal_Int8 TreeListBox::ExecuteDrop(const ExecuteDropEvent& rEvt)
273{
274 if (m_pActionListener)
275 m_pActionListener->executeDrop(rEvt);
276 m_xTreeView->unset_drag_dest_row();
277 return DND_ACTION_NONEcss::datatransfer::dnd::DNDConstants::ACTION_NONE;
278}
279
280IMPL_LINK(TreeListBox, QueryTooltipHdl, const weld::TreeIter&, rIter, OUString)OUString TreeListBox::LinkStubQueryTooltipHdl(void * instance
, const weld::TreeIter& data) { return static_cast<TreeListBox
*>(instance)->QueryTooltipHdl(data); } OUString TreeListBox
::QueryTooltipHdl(const weld::TreeIter& rIter)
281{
282 OUString sQuickHelpText;
283 if (m_pActionListener &&
284 m_pActionListener->requestQuickHelp(reinterpret_cast<void*>(m_xTreeView->get_id(rIter).toUInt64()), sQuickHelpText))
285 {
286 return sQuickHelpText;
287 }
288 return m_xTreeView->get_tooltip_text();
289}
290
291namespace
292{
293 // SelectionSupplier
294 typedef ::cppu::WeakImplHelper< XSelectionSupplier
295 > SelectionSupplier_Base;
296 class SelectionSupplier : public SelectionSupplier_Base
297 {
298 public:
299 explicit SelectionSupplier( const Any& _rSelection )
300 :m_aSelection( _rSelection )
301 {
302 }
303
304 virtual sal_Bool SAL_CALL select( const Any& xSelection ) override;
305 virtual Any SAL_CALL getSelection( ) override;
306 virtual void SAL_CALL addSelectionChangeListener( const Reference< XSelectionChangeListener >& xListener ) override;
307 virtual void SAL_CALL removeSelectionChangeListener( const Reference< XSelectionChangeListener >& xListener ) override;
308
309 protected:
310 virtual ~SelectionSupplier() override
311 {
312 }
313
314 private:
315 Any m_aSelection;
316 };
317
318 sal_Bool SAL_CALL SelectionSupplier::select( const Any& /*_Selection*/ )
319 {
320 throw IllegalArgumentException();
321 // API bug: this should be a NoSupportException
322 }
323
324 Any SAL_CALL SelectionSupplier::getSelection( )
325 {
326 return m_aSelection;
327 }
328
329 void SAL_CALL SelectionSupplier::addSelectionChangeListener( const Reference< XSelectionChangeListener >& /*_Listener*/ )
330 {
331 OSL_FAIL( "SelectionSupplier::removeSelectionChangeListener: no support!" )do { if (true && (((sal_Bool)1))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/dbaccess/source/ui/control/dbtreelistbox.cxx"
":" "331" ": "), "%s", "SelectionSupplier::removeSelectionChangeListener: no support!"
); } } while (false);
332 // API bug: this should be a NoSupportException
333 }
334
335 void SAL_CALL SelectionSupplier::removeSelectionChangeListener( const Reference< XSelectionChangeListener >& /*_Listener*/ )
336 {
337 OSL_FAIL( "SelectionSupplier::removeSelectionChangeListener: no support!" )do { if (true && (((sal_Bool)1))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/dbaccess/source/ui/control/dbtreelistbox.cxx"
":" "337" ": "), "%s", "SelectionSupplier::removeSelectionChangeListener: no support!"
); } } while (false);
338 // API bug: this should be a NoSupportException
339 }
340}
341
342IMPL_LINK(TreeListBox, CommandHdl, const CommandEvent&, rCEvt, bool)bool TreeListBox::LinkStubCommandHdl(void * instance, const CommandEvent
& data) { return static_cast<TreeListBox *>(instance
)->CommandHdl(data); } bool TreeListBox::CommandHdl(const CommandEvent
& rCEvt)
1
Calling 'TreeListBox::CommandHdl'
→
343{
344 if (rCEvt.GetCommand() != CommandEventId::ContextMenu)
2
←
Assuming the condition is false
→
3
←
Taking false branch
→
345 return false;
346
347 ::Point aPos = rCEvt.GetMousePosPixel();
348
349 std::unique_ptr<weld::TreeIter> xIter(m_xTreeView->make_iterator());
350 if (m_xTreeView->get_dest_row_at_pos(aPos, xIter.get(), false) && !m_xTreeView->is_selected(*xIter))
4
←
Assuming the condition is false
→
351 {
352 m_xTreeView->unselect_all();
353 m_xTreeView->set_cursor(*xIter);
354 m_xTreeView->select(*xIter);
355 SelectHdl(*m_xTreeView);
356 }
357
358 if (!m_pContextMenuProvider)
5
←
Assuming field 'm_pContextMenuProvider' is non-null
→
6
←
Taking false branch
→
359 return false;
360
361 OUString aResourceName(m_pContextMenuProvider->getContextMenuResourceName());
362 if (aResourceName.isEmpty())
7
←
Taking false branch
→
363 return false;
364
365 css::uno::Sequence< css::uno::Any > aArgs( 3 );
366 aArgs[0] <<= comphelper::makePropertyValue( "Value", aResourceName );
367 aArgs[1] <<= comphelper::makePropertyValue( "Frame", m_pContextMenuProvider->getCommandController().getXController()->getFrame() );
368 aArgs[2] <<= comphelper::makePropertyValue( "IsContextMenu", true );
369
370 css::uno::Reference< css::uno::XComponentContext > xContext = comphelper::getProcessComponentContext();
371 css::uno::Reference<css::frame::XPopupMenuController> xMenuController
372 (xContext->getServiceManager()->createInstanceWithArgumentsAndContext(
373 "com.sun.star.comp.framework.ResourceMenuController", aArgs, xContext), css::uno::UNO_QUERY);
374
375 if (!xMenuController.is())
8
←
Taking false branch
→
376 return false;
377
378 VclPtr<vcl::Window> xMenuParent = m_pContextMenuProvider->getMenuParent();
379
380 rtl::Reference xPopupMenu( new VCLXPopupMenu );
381 xMenuController->setPopupMenu( xPopupMenu.get() );
382 VclPtr<PopupMenu> pContextMenu( static_cast< PopupMenu* >( xPopupMenu->GetMenu() ) );
9
←
Calling constructor for 'VclPtr<PopupMenu>'
→
14
←
Returning from constructor for 'VclPtr<PopupMenu>'
→
383
384 // allow context menu interception
385 ::comphelper::OInterfaceContainerHelper2* pInterceptors = m_pContextMenuProvider->getContextMenuInterceptors();
386 if (pInterceptors && pInterceptors->getLength())
15
←
Assuming 'pInterceptors' is null
→
387 {
388 OUString aMenuIdentifier( "private:resource/popupmenu/" + aResourceName );
389
390 ContextMenuExecuteEvent aEvent;
391 aEvent.SourceWindow = VCLUnoHelper::GetInterface(xMenuParent);
392 aEvent.ExecutePosition.X = -1;
393 aEvent.ExecutePosition.Y = -1;
394 aEvent.ActionTriggerContainer = ::framework::ActionTriggerHelper::CreateActionTriggerContainerFromMenu(
395 pContextMenu.get(), &aMenuIdentifier );
396 aEvent.Selection = new SelectionSupplier(m_pContextMenuProvider->getCurrentSelection(*m_xTreeView));
397
398 ::comphelper::OInterfaceIteratorHelper2 aIter( *pInterceptors );
399 bool bModifiedMenu = false;
400 bool bAskInterceptors = true;
401 while ( aIter.hasMoreElements() && bAskInterceptors )
402 {
403 Reference< XContextMenuInterceptor > xInterceptor( aIter.next(), UNO_QUERY );
404 if ( !xInterceptor.is() )
405 continue;
406
407 try
408 {
409 ContextMenuInterceptorAction eAction = xInterceptor->notifyContextMenuExecute( aEvent );
410 switch ( eAction )
411 {
412 case ContextMenuInterceptorAction_CANCELLED:
413 return false;
414
415 case ContextMenuInterceptorAction_EXECUTE_MODIFIED:
416 bModifiedMenu = true;
417 bAskInterceptors = false;
418 break;
419
420 case ContextMenuInterceptorAction_CONTINUE_MODIFIED:
421 bModifiedMenu = true;
422 bAskInterceptors = true;
423 break;
424
425 default:
426 OSL_FAIL( "DBTreeListBox::CreateContextMenu: unexpected return value of the interceptor call!" )do { if (true && (((sal_Bool)1))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/dbaccess/source/ui/control/dbtreelistbox.cxx"
":" "426" ": "), "%s", "DBTreeListBox::CreateContextMenu: unexpected return value of the interceptor call!"
); } } while (false);
427 [[fallthrough]];
428 case ContextMenuInterceptorAction_IGNORED:
429 break;
430 }
431 }
432 catch( const DisposedException& e )
433 {
434 if ( e.Context == xInterceptor )
435 aIter.remove();
436 }
437 }
438
439 if ( bModifiedMenu )
440 {
441 pContextMenu->Clear();
442 ::framework::ActionTriggerHelper::CreateMenuFromActionTriggerContainer(
443 pContextMenu, aEvent.ActionTriggerContainer );
444 aEvent.ActionTriggerContainer.clear();
445 }
446 }
447
448 // adjust pos relative to m_xTreeView to relative to xMenuParent
449 m_pContextMenuProvider->adjustMenuPosition(*m_xTreeView, aPos);
450
451 // do action for selected entry in popup menu
452 pContextMenu->Execute(xMenuParent, aPos);
453 pContextMenu.disposeAndClear();
16
←
Calling 'VclPtr::disposeAndClear'
→
454
455 css::uno::Reference<css::lang::XComponent> xComponent(xMenuController, css::uno::UNO_QUERY);
456 if (xComponent.is())
457 xComponent->dispose();
458 xMenuController.clear();
459
460 return true;
461}
462
463IMPL_LINK_NOARG(TreeListBox, OnTimeOut, Timer*, void)void TreeListBox::LinkStubOnTimeOut(void * instance, Timer* data
) { return static_cast<TreeListBox *>(instance)->OnTimeOut
(data); } void TreeListBox::OnTimeOut(__attribute__ ((unused)
) Timer*)
464{
465 implStopSelectionTimer();
466
467 m_aSelChangeHdl.Call( nullptr );
468}
469
470std::unique_ptr<weld::TreeIter> TreeListBox::GetRootLevelParent(const weld::TreeIter* pEntry) const
471{
472 if (!pEntry)
473 return nullptr;
474 std::unique_ptr<weld::TreeIter> xEntry(m_xTreeView->make_iterator(pEntry));
475 while (m_xTreeView->get_iter_depth(*xEntry))
476 m_xTreeView->iter_parent(*xEntry);
477 return xEntry;
478}
479
480DBTreeViewBase::DBTreeViewBase(weld::Container* pContainer)
481 : m_xBuilder(Application::CreateBuilder(pContainer, "dbaccess/ui/dbtreelist.ui"))
482 , m_xContainer(m_xBuilder->weld_container("DBTreeList"))
483{
484}
485
486DBTreeViewBase::~DBTreeViewBase()
487{
488}
489
490DBTreeView::DBTreeView(weld::Container* pContainer, bool bSQLType)
491 : DBTreeViewBase(pContainer)
492{
493 m_xTreeListBox.reset(new TreeListBox(m_xBuilder->weld_tree_view("treeview"), bSQLType));
494}
495
496} // namespace dbaui
497
498/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
←

/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx

→
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#ifndef INCLUDED_VCL_PTR_HXX
21#define INCLUDED_VCL_PTR_HXX
22
23#include <sal/config.h>
24
25#include <rtl/ref.hxx>
26
27#include <utility>
28#include <type_traits>
29
30#ifdef DBG_UTIL
31#ifndef _WIN32
32#include <vcl/vclmain.hxx>
33#endif
34#endif
35
36class VclReferenceBase;
37
38namespace vcl::detail {
39
40template<typename>
41constexpr bool isIncompleteOrDerivedFromVclReferenceBase(...) { return true; }
42
43template<typename T> constexpr bool isIncompleteOrDerivedFromVclReferenceBase(
44 int (*)[sizeof(T)])
45{ return std::is_base_of<VclReferenceBase, T>::value; }
46
47} // namespace vcl::detail
48
49/**
50 * A thin wrapper around rtl::Reference to implement the acquire and dispose semantics we want for references to vcl::Window subclasses.
51 *
52 * For more details on the design please see vcl/README.lifecycle
53 *
54 * @param reference_type must be a subclass of vcl::Window
55 */
56template <class reference_type>
57class VclPtr
58{
59 static_assert(
60 vcl::detail::isIncompleteOrDerivedFromVclReferenceBase<reference_type>(
61 nullptr),
62 "template argument type must be derived from VclReferenceBase");
63
64 ::rtl::Reference<reference_type> m_rInnerRef;
65
66public:
67 /** Constructor...
68 */
69 VclPtr()
70 : m_rInnerRef()
71 {}
72
73 /** Constructor...
74 */
75 VclPtr (reference_type * pBody)
76 : m_rInnerRef(pBody)
10
←
Calling constructor for 'Reference<PopupMenu>'
→
13
←
Returning from constructor for 'Reference<PopupMenu>'
→
77 {}
78
79 /** Constructor... that doesn't take a ref.
80 */
81 VclPtr (reference_type * pBody, __sal_NoAcquire)
82 : m_rInnerRef(pBody, SAL_NO_ACQUIRE)
83 {}
84
85 /** Up-casting conversion constructor: Copies interface reference.
86
87 Does not work for up-casts to ambiguous bases. For the special case of
88 up-casting to Reference< XInterface >, see the corresponding conversion
89 operator.
90
91 @param rRef another reference
92 */
93 template< class derived_type >
94 VclPtr(
95 const VclPtr< derived_type > & rRef,
96 typename std::enable_if<
97 std::is_base_of<reference_type, derived_type>::value, int>::type
98 = 0 )
99 : m_rInnerRef( static_cast<reference_type*>(rRef) )
100 {
101 }
102
103#if defined(DBG_UTIL) && !defined(_WIN32)
104 virtual ~VclPtr()
105 {
106 assert(m_rInnerRef.get() == nullptr || vclmain::isAlive())(static_cast <bool> (m_rInnerRef.get() == nullptr || vclmain
::isAlive()) ? void (0) : __assert_fail ("m_rInnerRef.get() == nullptr || vclmain::isAlive()"
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 106, __extension__ __PRETTY_FUNCTION__));
107 // We can be one of the intermediate counts, but if we are the last
108 // VclPtr keeping this object alive, then something forgot to call dispose().
109 assert((!m_rInnerRef.get() || m_rInnerRef->isDisposed() || m_rInnerRef->getRefCount() > 1)(static_cast <bool> ((!m_rInnerRef.get() || m_rInnerRef
->isDisposed() || m_rInnerRef->getRefCount() > 1) &&
"someone forgot to call dispose()") ? void (0) : __assert_fail
("(!m_rInnerRef.get() || m_rInnerRef->isDisposed() || m_rInnerRef->getRefCount() > 1) && \"someone forgot to call dispose()\""
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 110, __extension__ __PRETTY_FUNCTION__))
110 && "someone forgot to call dispose()")(static_cast <bool> ((!m_rInnerRef.get() || m_rInnerRef
->isDisposed() || m_rInnerRef->getRefCount() > 1) &&
"someone forgot to call dispose()") ? void (0) : __assert_fail
("(!m_rInnerRef.get() || m_rInnerRef->isDisposed() || m_rInnerRef->getRefCount() > 1) && \"someone forgot to call dispose()\""
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 110, __extension__ __PRETTY_FUNCTION__));
111 }
112 VclPtr(VclPtr const &) = default;
113 VclPtr(VclPtr &&) = default;
114 VclPtr & operator =(VclPtr const &) = default;
115 VclPtr & operator =(VclPtr &&) = default;
116#endif
117
118 /**
119 * A construction helper for VclPtr. Since VclPtr types are created
120 * with a reference-count of one - to help fit into the existing
121 * code-flow; this helps us to construct them easily.
122 *
123 * For more details on the design please see vcl/README.lifecycle
124 *
125 * @tparam reference_type must be a subclass of vcl::Window
126 */
127 template<typename... Arg> [[nodiscard]] static VclPtr< reference_type > Create(Arg &&... arg)
128 {
129 return VclPtr< reference_type >( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE );
130 }
131
132 /** Probably most common used: handle->someBodyOp().
133 */
134 reference_type * operator->() const
135 {
136 return m_rInnerRef.get();
137 }
138
139 /** Get the body. Can be used instead of operator->().
140 I.e. handle->someBodyOp() and handle.get()->someBodyOp()
141 are the same.
142 */
143 reference_type * get() const
144 {
145 return m_rInnerRef.get();
146 }
147
148 void set(reference_type *pBody)
149 {
150 m_rInnerRef.set(pBody);
151 }
152
153 void reset(reference_type *pBody)
154 {
155 m_rInnerRef.set(pBody);
156 }
157
158 /** Up-casting copy assignment operator.
159
160 Does not work for up-casts to ambiguous bases.
161
162 @param rRef another reference
163 */
164 template<typename derived_type>
165 typename std::enable_if<
166 std::is_base_of<reference_type, derived_type>::value,
167 VclPtr &>::type
168 operator =(VclPtr<derived_type> const & rRef)
169 {
170 m_rInnerRef.set(rRef.get());
171 return *this;
172 }
173
174 VclPtr & operator =(reference_type * pBody)
175 {
176 m_rInnerRef.set(pBody);
177 return *this;
178 }
179
180 operator reference_type * () const
181 {
182 return m_rInnerRef.get();
183 }
184
185 explicit operator bool () const
186 {
187 return m_rInnerRef.get() != nullptr;
188 }
189
190 void clear()
191 {
192 m_rInnerRef.clear();
193 }
194
195 void reset()
196 {
197 m_rInnerRef.clear();
198 }
199
200 void disposeAndClear()
201 {
202 // hold it alive for the lifetime of this method
203 ::rtl::Reference<reference_type> aTmp(m_rInnerRef);
204 m_rInnerRef.clear(); // we should use some 'swap' method ideally ;-)
17
←
Calling 'Reference::clear'
→
24
←
Returning; memory was released
→
205 if (aTmp.get()) {
25
←
Calling 'Reference::get'
→
206 aTmp->disposeOnce();
207 }
208 }
209
210 /** Needed to place VclPtr's into STL collection.
211 */
212 bool operator< (const VclPtr<reference_type> & handle) const
213 {
214 return (m_rInnerRef < handle.m_rInnerRef);
215 }
216}; // class VclPtr
217
218template<typename T1, typename T2>
219inline bool operator ==(VclPtr<T1> const & p1, VclPtr<T2> const & p2) {
220 return p1.get() == p2.get();
221}
222
223template<typename T> inline bool operator ==(VclPtr<T> const & p1, T const * p2)
224{
225 return p1.get() == p2;
226}
227
228template<typename T> inline bool operator ==(VclPtr<T> const & p1, T * p2) {
229 return p1.get() == p2;
230}
231
232template<typename T> inline bool operator ==(T const * p1, VclPtr<T> const & p2)
233{
234 return p1 == p2.get();
235}
236
237template<typename T> inline bool operator ==(T * p1, VclPtr<T> const & p2) {
238 return p1 == p2.get();
239}
240
241template<typename T1, typename T2>
242inline bool operator !=(VclPtr<T1> const & p1, VclPtr<T2> const & p2) {
243 return !(p1 == p2);
244}
245
246template<typename T> inline bool operator !=(VclPtr<T> const & p1, T const * p2)
247{
248 return !(p1 == p2);
249}
250
251template<typename T> inline bool operator !=(VclPtr<T> const & p1, T * p2) {
252 return !(p1 == p2);
253}
254
255template<typename T> inline bool operator !=(T const * p1, VclPtr<T> const & p2)
256{
257 return !(p1 == p2);
258}
259
260template<typename T> inline bool operator !=(T * p1, VclPtr<T> const & p2) {
261 return !(p1 == p2);
262}
263
264/**
265 * A construction helper for a temporary VclPtr. Since VclPtr types
266 * are created with a reference-count of one - to help fit into
267 * the existing code-flow; this helps us to construct them easily.
268 * see also VclPtr::Create and ScopedVclPtr
269 *
270 * For more details on the design please see vcl/README.lifecycle
271 *
272 * @param reference_type must be a subclass of vcl::Window
273 */
274template <class reference_type>
275class SAL_WARN_UNUSED__attribute__((warn_unused)) VclPtrInstance final : public VclPtr<reference_type>
276{
277public:
278 template<typename... Arg> VclPtrInstance(Arg &&... arg)
279 : VclPtr<reference_type>( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE )
280 {
281 }
282
283 /**
284 * Override and disallow this, to prevent people accidentally calling it and actually
285 * getting VclPtr::Create and getting a naked VclPtr<> instance
286 */
287 template<typename... Arg> static VclPtrInstance< reference_type > Create(Arg &&... ) = delete;
288};
289
290template <class reference_type>
291class ScopedVclPtr : public VclPtr<reference_type>
292{
293public:
294 /** Constructor...
295 */
296 ScopedVclPtr()
297 : VclPtr<reference_type>()
298 {}
299
300 /** Constructor
301 */
302 ScopedVclPtr (reference_type * pBody)
303 : VclPtr<reference_type>(pBody)
304 {}
305
306 /** Copy constructor...
307 */
308 ScopedVclPtr (const VclPtr<reference_type> & handle)
309 : VclPtr<reference_type>(handle)
310 {}
311
312 /**
313 Assignment that releases the last reference.
314 */
315 void disposeAndReset(reference_type *pBody)
316 {
317 if (pBody != this->get()) {
318 VclPtr<reference_type>::disposeAndClear();
319 VclPtr<reference_type>::set(pBody);
320 }
321 }
322
323 /**
324 Assignment that releases the last reference.
325 */
326 ScopedVclPtr<reference_type>& operator = (reference_type * pBody)
327 {
328 disposeAndReset(pBody);
329 return *this;
330 }
331
332 /** Up-casting conversion constructor: Copies interface reference.
333
334 Does not work for up-casts to ambiguous bases. For the special case of
335 up-casting to Reference< XInterface >, see the corresponding conversion
336 operator.
337
338 @param rRef another reference
339 */
340 template< class derived_type >
341 ScopedVclPtr(
342 const VclPtr< derived_type > & rRef,
343 typename std::enable_if<
344 std::is_base_of<reference_type, derived_type>::value, int>::type
345 = 0 )
346 : VclPtr<reference_type>( rRef )
347 {
348 }
349
350 /** Up-casting assignment operator.
351
352 Does not work for up-casts to ambiguous bases.
353
354 @param rRef another VclPtr
355 */
356 template<typename derived_type>
357 typename std::enable_if<
358 std::is_base_of<reference_type, derived_type>::value,
359 ScopedVclPtr &>::type
360 operator =(VclPtr<derived_type> const & rRef)
361 {
362 disposeAndReset(rRef.get());
363 return *this;
364 }
365
366 /**
367 * Override and disallow this, to prevent people accidentally calling it and actually
368 * getting VclPtr::Create and getting a naked VclPtr<> instance
369 */
370 template<typename... Arg> static ScopedVclPtr< reference_type > Create(Arg &&... ) = delete;
371
372 ~ScopedVclPtr()
373 {
374 VclPtr<reference_type>::disposeAndClear();
375 assert(VclPtr<reference_type>::get() == nullptr)(static_cast <bool> (VclPtr<reference_type>::get(
) == nullptr) ? void (0) : __assert_fail ("VclPtr<reference_type>::get() == nullptr"
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 375, __extension__ __PRETTY_FUNCTION__)); // make sure there are no lingering references
376 }
377
378private:
379 // Most likely we don't want this default copy-constructor.
380 ScopedVclPtr (const ScopedVclPtr<reference_type> &) = delete;
381 // And certainly we don't want a default assignment operator.
382 ScopedVclPtr<reference_type>& operator = (const ScopedVclPtr<reference_type> &) = delete;
383 // And disallow reset as that doesn't call disposeAndClear on the original reference
384 void reset() = delete;
385 void reset(reference_type *pBody) = delete;
386
387protected:
388 ScopedVclPtr (reference_type * pBody, __sal_NoAcquire)
389 : VclPtr<reference_type>(pBody, SAL_NO_ACQUIRE)
390 {}
391};
392
393/**
394 * A construction helper for ScopedVclPtr. Since VclPtr types are created
395 * with a reference-count of one - to help fit into the existing
396 * code-flow; this helps us to construct them easily.
397 *
398 * For more details on the design please see vcl/README.lifecycle
399 *
400 * @param reference_type must be a subclass of vcl::Window
401 */
402#if defined _MSC_VER
403#pragma warning(push)
404#pragma warning(disable: 4521) // " multiple copy constructors specified"
405#endif
406template <class reference_type>
407class SAL_WARN_UNUSED__attribute__((warn_unused)) ScopedVclPtrInstance final : public ScopedVclPtr<reference_type>
408{
409public:
410 template<typename... Arg> ScopedVclPtrInstance(Arg &&... arg)
411 : ScopedVclPtr<reference_type>( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE )
412 {
413 }
414
415 /**
416 * Override and disallow this, to prevent people accidentally calling it and actually
417 * getting VclPtr::Create and getting a naked VclPtr<> instance
418 */
419 template<typename... Arg> static ScopedVclPtrInstance< reference_type > Create(Arg &&...) = delete;
420
421private:
422 // Prevent the above perfect forwarding ctor from hijacking (accidental)
423 // attempts at ScopedVclPtrInstance copy construction (where the hijacking
424 // would typically lead to somewhat obscure error messages); both non-const
425 // and const variants are needed here, as the ScopedVclPtr base class has a
426 // const--variant copy ctor, so the implicitly declared copy ctor for
427 // ScopedVclPtrInstance would also be the const variant, so non-const copy
428 // construction attempts would be hijacked by the perfect forwarding ctor;
429 // but if we only declared a non-const variant here, the const variant would
430 // no longer be implicitly declared (as there would already be an explicitly
431 // declared copy ctor), so const copy construction attempts would then be
432 // hijacked by the perfect forwarding ctor:
433 ScopedVclPtrInstance(ScopedVclPtrInstance &) = delete;
434 ScopedVclPtrInstance(ScopedVclPtrInstance const &) = delete;
435};
436#if defined _MSC_VER
437#pragma warning(pop)
438#endif
439
440#endif // INCLUDED_VCL_PTR_HXX
441
442/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
←

/home/maarten/src/libreoffice/core/include/rtl/ref.hxx

→
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#ifndef INCLUDED_RTL_REF_HXX
21#define INCLUDED_RTL_REF_HXX
22
23#include "sal/config.h"
24
25#include <cassert>
26#include <cstddef>
27#include <functional>
28#ifdef LIBO_INTERNAL_ONLY1
29#include <type_traits>
30#endif
31
32#include "sal/types.h"
33
34namespace rtl
35{
36
37/** Template reference class for reference type.
38*/
39template <class reference_type>
40class Reference
41{
42 /** The <b>reference_type</b> body pointer.
43 */
44 reference_type * m_pBody;
45
46
47public:
48 /** Constructor...
49 */
50 Reference()
51 : m_pBody (NULL__null)
52 {}
53
54
55 /** Constructor...
56 */
57 Reference (reference_type * pBody, __sal_NoAcquire)
58 : m_pBody (pBody)
59 {
60 }
61
62 /** Constructor...
63 */
64 Reference (reference_type * pBody)
65 : m_pBody (pBody)
66 {
67 if (m_pBody)
11
←
Assuming field 'm_pBody' is non-null
→
12
←
Taking true branch
→
68 m_pBody->acquire();
69 }
70
71 /** Copy constructor...
72 */
73 Reference (const Reference<reference_type> & handle)
74 : m_pBody (handle.m_pBody)
75 {
76 if (m_pBody)
77 m_pBody->acquire();
78 }
79
80#ifdef LIBO_INTERNAL_ONLY1
81 /** Move constructor...
82 */
83 Reference (Reference<reference_type> && handle) noexcept
84 : m_pBody (handle.m_pBody)
85 {
86 handle.m_pBody = nullptr;
87 }
88#endif
89
90#if defined LIBO_INTERNAL_ONLY1
91 /** Up-casting conversion constructor: Copies interface reference.
92
93 Does not work for up-casts to ambiguous bases.
94
95 @param rRef another reference
96 */
97 template< class derived_type >
98 inline Reference(
99 const Reference< derived_type > & rRef,
100 std::enable_if_t<std::is_base_of_v<reference_type, derived_type>, int> = 0 )
101 : m_pBody (rRef.get())
102 {
103 if (m_pBody)
104 m_pBody->acquire();
105 }
106#endif
107
108 /** Destructor...
109 */
110 ~Reference() COVERITY_NOEXCEPT_FALSE
111 {
112 if (m_pBody)
113 m_pBody->release();
114 }
115
116 /** Set...
117 Similar to assignment.
118 */
119 Reference<reference_type> &
120 SAL_CALL set (reference_type * pBody)
121 {
122 if (pBody)
123 pBody->acquire();
124 reference_type * const pOld = m_pBody;
125 m_pBody = pBody;
126 if (pOld)
127 pOld->release();
128 return *this;
129 }
130
131 /** Assignment.
132 Unbinds this instance from its body (if bound) and
133 bind it to the body represented by the handle.
134 */
135 Reference<reference_type> &
136 SAL_CALL operator= (const Reference<reference_type> & handle)
137 {
138 return set( handle.m_pBody );
139 }
140
141#ifdef LIBO_INTERNAL_ONLY1
142 /** Assignment.
143 * Unbinds this instance from its body (if bound),
144 * bind it to the body represented by the handle, and
145 * set the body represented by the handle to nullptr.
146 */
147 Reference<reference_type> &
148 operator= (Reference<reference_type> && handle)
149 {
150 // self-movement guts ourself
151 if (m_pBody)
152 m_pBody->release();
153 m_pBody = handle.m_pBody;
154 handle.m_pBody = nullptr;
155 return *this;
156 }
157#endif
158
159 /** Assignment...
160 */
161 Reference<reference_type> &
162 SAL_CALL operator= (reference_type * pBody)
163 {
164 return set( pBody );
165 }
166
167 /** Unbind the body from this handle.
168 Note that for a handle representing a large body,
169 "handle.clear().set(new body());" _might_
170 perform a little bit better than "handle.set(new body());",
171 since in the second case two large objects exist in memory
172 (the old body and the new body).
173 */
174 Reference<reference_type> & SAL_CALL clear()
175 {
176 if (m_pBody
17.1
Field 'm_pBody' is non-null
17.1
Field 'm_pBody' is non-null
17.1
Field 'm_pBody' is non-null
17.1
Field 'm_pBody' is non-null
)
18
←
Taking true branch
→
177 {
178 reference_type * const pOld = m_pBody;
179 m_pBody = NULL__null;
180 pOld->release();
19
←
Calling 'VclReferenceBase::release'
→
23
←
Returning; memory was released
→
181 }
182 return *this;
183 }
184
185
186 /** Get the body. Can be used instead of operator->().
187 I.e. handle->someBodyOp() and handle.get()->someBodyOp()
188 are the same.
189 */
190 reference_type * SAL_CALL get() const
191 {
192 return m_pBody;
26
←
Use of memory after it is freed
193 }
194
195
196 /** Probably most common used: handle->someBodyOp().
197 */
198 reference_type * SAL_CALL operator->() const
199 {
200 assert(m_pBody != NULL)(static_cast <bool> (m_pBody != __null) ? void (0) : __assert_fail
("m_pBody != NULL", "/home/maarten/src/libreoffice/core/include/rtl/ref.hxx"
, 200, __extension__ __PRETTY_FUNCTION__));
201 return m_pBody;
202 }
203
204
205 /** Allows (*handle).someBodyOp().
206 */
207 reference_type & SAL_CALL operator*() const
208 {
209 assert(m_pBody != NULL)(static_cast <bool> (m_pBody != __null) ? void (0) : __assert_fail
("m_pBody != NULL", "/home/maarten/src/libreoffice/core/include/rtl/ref.hxx"
, 209, __extension__ __PRETTY_FUNCTION__));
210 return *m_pBody;
211 }
212
213
214 /** Returns True if the handle does point to a valid body.
215 */
216 bool SAL_CALL is() const
217 {
218 return (m_pBody != NULL__null);
219 }
220
221#if defined LIBO_INTERNAL_ONLY1
222 /** Returns True if the handle does point to a valid body.
223 */
224 explicit operator bool() const
225 {
226 return is();
227 }
228#endif
229
230 /** Returns True if this points to pBody.
231 */
232 bool SAL_CALL operator== (const reference_type * pBody) const
233 {
234 return (m_pBody == pBody);
235 }
236
237
238 /** Returns True if handle points to the same body.
239 */
240 bool
241 SAL_CALL operator== (const Reference<reference_type> & handle) const
242 {
243 return (m_pBody == handle.m_pBody);
244 }
245
246
247 /** Needed to place References into STL collection.
248 */
249 bool
250 SAL_CALL operator!= (const Reference<reference_type> & handle) const
251 {
252 return (m_pBody != handle.m_pBody);
253 }
254
255
256 /** Needed to place References into STL collection.
257 */
258 bool
259 SAL_CALL operator< (const Reference<reference_type> & handle) const
260 {
261 return (m_pBody < handle.m_pBody);
262 }
263
264
265 /** Needed to place References into STL collection.
266 */
267 bool
268 SAL_CALL operator> (const Reference<reference_type> & handle) const
269 {
270 return (m_pBody > handle.m_pBody);
271 }
272};
273
274} // namespace rtl
275
276#if defined LIBO_INTERNAL_ONLY1
277namespace std
278{
279
280/// @cond INTERNAL
281/**
282 Make rtl::Reference hashable by default for use in STL containers.
283
284 @since LibreOffice 6.3
285*/
286template<typename T>
287struct hash<::rtl::Reference<T>>
288{
289 std::size_t operator()(::rtl::Reference<T> const & s) const
290 { return std::size_t(s.get()); }
291};
292/// @endcond
293
294}
295
296#endif
297
298#endif /* ! INCLUDED_RTL_REF_HXX */
299
300/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
←

/home/maarten/src/libreoffice/core/include/vcl/vclreferencebase.hxx

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#ifndef INCLUDED_VCL_Reference_HXX
20#define INCLUDED_VCL_Reference_HXX
21
22#include <vcl/dllapi.h>
23#include <osl/interlck.h>
24
25class VCL_DLLPUBLIC__attribute__ ((visibility("default"))) VclReferenceBase
26{
27 mutable oslInterlockedCount mnRefCnt;
28
29 template<typename T> friend class VclPtr;
30
31public:
32 void acquire() const
33 {
34 osl_atomic_increment(&mnRefCnt)__sync_add_and_fetch((&mnRefCnt), 1);
35 }
36
37 void release() const
38 {
39 if (osl_atomic_decrement(&mnRefCnt)__sync_sub_and_fetch((&mnRefCnt), 1) == 0)
20
←
Assuming the condition is true
→
21
←
Taking true branch
→
40 delete this;
22
←
Memory is released
→
41 }
42#ifdef DBG_UTIL
43#ifndef _WIN32
44 sal_Int32 getRefCount() const { return mnRefCnt; }
45#endif
46#endif
47
48
49private:
50 VclReferenceBase(const VclReferenceBase&) = delete;
51 VclReferenceBase& operator=(const VclReferenceBase&) = delete;
52
53 bool mbDisposed : 1;
54
55protected:
56 VclReferenceBase();
57protected:
58 virtual ~VclReferenceBase();
59
60protected:
61 virtual void dispose();
62
63public:
64 void disposeOnce();
65 bool isDisposed() const { return mbDisposed; }
66
67};
68#endif