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Avoid crash when releasing the mouse in wxRibbonToolBar.
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2ee3ee1b 1///////////////////////////////////////////////////////////////////////////////
aa61d352 2// Name: src/common/lboxcmn.cpp
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3// Purpose: wxListBox class methods common to all platforms
4// Author: Vadim Zeitlin
5// Modified by:
6// Created: 22.10.99
7// RCS-ID: $Id$
77ffb593 8// Copyright: (c) wxWidgets team
65571936 9// Licence: wxWindows licence
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10///////////////////////////////////////////////////////////////////////////////
11
12// ============================================================================
13// declarations
14// ============================================================================
15
16// ----------------------------------------------------------------------------
17// headers
18// ----------------------------------------------------------------------------
19
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20// For compilers that support precompilation, includes "wx.h".
21#include "wx/wxprec.h"
22
23#ifdef __BORLANDC__
24 #pragma hdrstop
25#endif
26
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27#if wxUSE_LISTBOX
28
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29#include "wx/listbox.h"
30
2ee3ee1b 31#ifndef WX_PRECOMP
ed39ff57 32 #include "wx/dynarray.h"
a9711a4d 33 #include "wx/arrstr.h"
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34#endif
35
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36#include "wx/log.h"
37
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38// ============================================================================
39// implementation
40// ============================================================================
41
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42wxListBoxBase::~wxListBoxBase()
43{
44 // this destructor is required for Darwin
45}
46
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47// ----------------------------------------------------------------------------
48// selection
49// ----------------------------------------------------------------------------
50
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51bool wxListBoxBase::SetStringSelection(const wxString& s, bool select)
52{
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53 const int sel = FindString(s);
54 if ( sel == wxNOT_FOUND )
55 return false;
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56
57 SetSelection(sel, select);
58
f644b28c 59 return true;
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60}
61
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62void wxListBoxBase::SetSelection(int n)
63{
64 if ( !HasMultipleSelection() )
65 DoChangeSingleSelection(n);
66
67 DoSetSelection(n, true);
68}
69
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70void wxListBoxBase::DeselectAll(int itemToLeaveSelected)
71{
72 if ( HasMultipleSelection() )
73 {
74 wxArrayInt selections;
75 GetSelections(selections);
76
77 size_t count = selections.GetCount();
78 for ( size_t n = 0; n < count; n++ )
79 {
80 int item = selections[n];
81 if ( item != itemToLeaveSelected )
82 Deselect(item);
83 }
84 }
85 else // single selection
86 {
87 int sel = GetSelection();
f644b28c 88 if ( sel != wxNOT_FOUND && sel != itemToLeaveSelected )
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89 {
90 Deselect(sel);
91 }
92 }
93}
94
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95void wxListBoxBase::UpdateOldSelections()
96{
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97 // We need to remember the selection even in single-selection case on
98 // Windows, so that we don't send an event when the user clicks on an
99 // already selected item.
100#ifndef __WXMSW__
05d790f8 101 if (HasFlag(wxLB_MULTIPLE) || HasFlag(wxLB_EXTENDED))
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102#endif
103 {
05d790f8 104 GetSelections( m_oldSelections );
a614ffae 105 }
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106}
107
53f60d4a 108bool wxListBoxBase::SendEvent(wxEventType evtType, int item, bool selected)
05d790f8 109{
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110 wxCommandEvent event(evtType, GetId());
111 event.SetEventObject(this);
112
113 event.SetInt(item);
114 event.SetString(GetString(item));
115 event.SetExtraLong(selected);
116
117 if ( HasClientObjectData() )
118 event.SetClientObject(GetClientObject(item));
119 else if ( HasClientUntypedData() )
120 event.SetClientData(GetClientData(item));
121
122 return HandleWindowEvent(event);
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123}
124
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125bool wxListBoxBase::DoChangeSingleSelection(int item)
126{
127 // As we don't use m_oldSelections in single selection mode, we store the
128 // last item that we notified the user about in it in this case because we
129 // need to remember it to be able to filter out the dummy selection changes
130 // that we get when the user clicks on an already selected item.
131 if ( !m_oldSelections.empty() && *m_oldSelections.begin() == item )
132 {
133 // Same item as the last time.
134 return false;
135 }
136
137 m_oldSelections.clear();
138 m_oldSelections.push_back(item);
139
140 return true;
141}
142
53f60d4a 143bool wxListBoxBase::CalcAndSendEvent()
05d790f8 144{
05d790f8 145 wxArrayInt selections;
7ead3845 146 GetSelections(selections);
53f60d4a 147 bool selected = true;
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148
149 if ( selections.empty() && m_oldSelections.empty() )
150 {
151 // nothing changed, just leave
53f60d4a 152 return false;
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153 }
154
155 const size_t countSel = selections.size(),
156 countSelOld = m_oldSelections.size();
157 if ( countSel == countSelOld )
158 {
159 bool changed = false;
160 for ( size_t idx = 0; idx < countSel; idx++ )
05d790f8 161 {
7ead3845 162 if (selections[idx] != m_oldSelections[idx])
05d790f8 163 {
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164 changed = true;
165 break;
05d790f8 166 }
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167 }
168
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169 // nothing changed, just leave
170 if ( !changed )
53f60d4a 171 return false;
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172 }
173
174 int item = wxNOT_FOUND;
175 if ( selections.empty() )
176 {
53f60d4a 177 selected = false;
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178 item = m_oldSelections[0];
179 }
180 else // we [still] have some selections
181 {
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182 // Now test if any new item is selected
183 bool any_new_selected = false;
7ead3845 184 for ( size_t idx = 0; idx < countSel; idx++ )
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185 {
186 item = selections[idx];
7ead3845 187 if ( m_oldSelections.Index(item) == wxNOT_FOUND )
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188 {
189 any_new_selected = true;
190 break;
191 }
192 }
7ead3845 193
53f60d4a 194 if ( !any_new_selected )
05d790f8 195 {
53f60d4a 196 // No new items selected, now test if any new item is deselected
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197 bool any_new_deselected = false;
198 for ( size_t idx = 0; idx < countSelOld; idx++ )
05d790f8 199 {
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200 item = m_oldSelections[idx];
201 if ( selections.Index(item) == wxNOT_FOUND )
202 {
203 any_new_deselected = true;
204 break;
205 }
206 }
207
208 if ( any_new_deselected )
209 {
210 // indicate that this is a selection
53f60d4a 211 selected = false;
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212 }
213 else
214 {
215 item = wxNOT_FOUND; // this should be impossible
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216 }
217 }
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218 }
219
220 wxASSERT_MSG( item != wxNOT_FOUND,
221 "Logic error in wxListBox selection event generation code" );
222
223 m_oldSelections = selections;
224
53f60d4a 225 return SendEvent(wxEVT_COMMAND_LISTBOX_SELECTED, item, selected);
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226}
227
2ee3ee1b 228// ----------------------------------------------------------------------------
6c8a980f 229// misc
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230// ----------------------------------------------------------------------------
231
6c8a980f 232void wxListBoxBase::Command(wxCommandEvent& event)
2ee3ee1b 233{
687706f5 234 SetSelection(event.GetInt(), event.GetExtraLong() != 0);
004867db 235 (void)GetEventHandler()->ProcessEvent(event);
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236}
237
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238// ----------------------------------------------------------------------------
239// SetFirstItem() and such
240// ----------------------------------------------------------------------------
241
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242void wxListBoxBase::SetFirstItem(const wxString& s)
243{
244 int n = FindString(s);
245
f644b28c 246 wxCHECK_RET( n != wxNOT_FOUND, wxT("invalid string in wxListBox::SetFirstItem") );
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247
248 DoSetFirstItem(n);
249}
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250
251void wxListBoxBase::AppendAndEnsureVisible(const wxString& s)
252{
253 Append(s);
254 EnsureVisible(GetCount() - 1);
255}
256
257void wxListBoxBase::EnsureVisible(int WXUNUSED(n))
258{
259 // the base class version does nothing (the only alternative would be to
260 // call SetFirstItem() but this is probably even more stupid)
261}
262
263#endif // wxUSE_LISTBOX