src/generic/accel.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/accel.cpp
   3 // Purpose:     generic implementation of wxAcceleratorTable class
   4 // Author:      Robert Roebling
   5 // Modified:    VZ pn 31.05.01: use typed lists, Unicode cleanup, Add/Remove
   6 // Id:          $Id$
   7 // Copyright:   (c) 1998 Robert Roebling
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // declarations
  13 // ============================================================================
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 // For compilers that support precompilation, includes "wx.h".
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #if wxUSE_ACCEL
  27
  28 #ifndef WX_PRECOMP
  29     #include "wx/list.h"
  30     #include "wx/event.h"
  31 #endif // WX_PRECOMP
  32
  33 #include "wx/accel.h"
  34
  35 #include <ctype.h>
  36
  37 // ----------------------------------------------------------------------------
  38 // wxAccelList: a list of wxAcceleratorEntries
  39 // ----------------------------------------------------------------------------
  40
  41 WX_DECLARE_LIST(wxAcceleratorEntry, wxAccelList);
  42 #include "wx/listimpl.cpp"
  43 WX_DEFINE_LIST(wxAccelList)
  44
  45 // ----------------------------------------------------------------------------
  46 // wxAccelRefData: the data used by wxAcceleratorTable
  47 // ----------------------------------------------------------------------------
  48
  49 class wxAccelRefData : public wxObjectRefData
  50 {
  51 public:
  52     wxAccelRefData()
  53     {
  54     }
  55
  56     wxAccelRefData(const wxAccelRefData& data)
  57         : wxObjectRefData()
  58     {
  59         m_accels = data.m_accels;
  60     }
  61
  62     virtual ~wxAccelRefData()
  63     {
  64         WX_CLEAR_LIST(wxAccelList, m_accels);
  65     }
  66
  67     wxAccelList m_accels;
  68 };
  69
  70 // macro which can be used to access wxAccelRefData from wxAcceleratorTable
  71 #define M_ACCELDATA ((wxAccelRefData *)m_refData)
  72
  73
  74 // ============================================================================
  75 // implementation
  76 // ============================================================================
  77
  78 // ----------------------------------------------------------------------------
  79 // wxAcceleratorTable ctors
  80 // ----------------------------------------------------------------------------
  81
  82 IMPLEMENT_DYNAMIC_CLASS(wxAcceleratorTable, wxObject)
  83
  84 wxAcceleratorTable::wxAcceleratorTable()
  85 {
  86 }
  87
  88 wxAcceleratorTable::wxAcceleratorTable(int n, const wxAcceleratorEntry entries[])
  89 {
  90     m_refData = new wxAccelRefData;
  91
  92     for ( int i = 0; i < n; i++ )
  93     {
  94         const wxAcceleratorEntry& entry = entries[i];
  95
  96         int keycode = entry.GetKeyCode();
  97         if ( isascii(keycode) )
  98             keycode = toupper(keycode);
  99
 100         M_ACCELDATA->m_accels.Append(new wxAcceleratorEntry(entry.GetFlags(),
 101                                                             keycode,
 102                                                             entry.GetCommand()));
 103     }
 104 }
 105
 106 wxAcceleratorTable::~wxAcceleratorTable()
 107 {
 108 }
 109
 110 bool wxAcceleratorTable::Ok() const
 111 {
 112     return m_refData != NULL;
 113 }
 114
 115 // ----------------------------------------------------------------------------
 116 // wxAcceleratorTable updating
 117 // ----------------------------------------------------------------------------
 118
 119 void wxAcceleratorTable::Add(const wxAcceleratorEntry& entry)
 120 {
 121     AllocExclusive();
 122
 123     if ( !m_refData )
 124     {
 125         m_refData = new wxAccelRefData;
 126     }
 127
 128     M_ACCELDATA->m_accels.Append(new wxAcceleratorEntry(entry));
 129 }
 130
 131 void wxAcceleratorTable::Remove(const wxAcceleratorEntry& entry)
 132 {
 133     AllocExclusive();
 134
 135     wxAccelList::compatibility_iterator node = M_ACCELDATA->m_accels.GetFirst();
 136     while ( node )
 137     {
 138         const wxAcceleratorEntry *entryCur = node->GetData();
 139
 140         // given entry contains only the information of the accelerator key
 141         // because it was set that way during creation so do not use the
 142         // comparison operator which also checks the command field
 143         if ((entryCur->GetKeyCode() == entry.GetKeyCode()) &&
 144             (entryCur->GetFlags() == entry.GetFlags()))
 145         {
 146             delete node->GetData();
 147             M_ACCELDATA->m_accels.Erase(node);
 148
 149             return;
 150         }
 151
 152         node = node->GetNext();
 153     }
 154
 155     wxFAIL_MSG(_T("deleting inexistent accel from wxAcceleratorTable"));
 156 }
 157
 158 // ----------------------------------------------------------------------------
 159 // wxAcceleratorTable: find a command for the given key press
 160 // ----------------------------------------------------------------------------
 161
 162 const wxAcceleratorEntry *
 163 wxAcceleratorTable::GetEntry(const wxKeyEvent& event) const
 164 {
 165     if ( !Ok() )
 166     {
 167         // not an error, the accel table is just empty
 168         return NULL;
 169     }
 170
 171     wxAccelList::compatibility_iterator node = M_ACCELDATA->m_accels.GetFirst();
 172     while ( node )
 173     {
 174         const wxAcceleratorEntry *entry = node->GetData();
 175
 176         // is the key the same?
 177         if ( event.m_keyCode == entry->GetKeyCode() )
 178         {
 179             int flags = entry->GetFlags();
 180
 181             // now check flags
 182             if ( (((flags & wxACCEL_CTRL) != 0) == event.ControlDown()) &&
 183                  (((flags & wxACCEL_SHIFT) != 0) == event.ShiftDown()) &&
 184                  (((flags & wxACCEL_ALT) != 0) == event.AltDown()) )
 185             {
 186                 return entry;
 187             }
 188         }
 189
 190         node = node->GetNext();
 191     }
 192
 193     return NULL;
 194 }
 195
 196 wxMenuItem *wxAcceleratorTable::GetMenuItem(const wxKeyEvent& event) const
 197 {
 198     const wxAcceleratorEntry *entry = GetEntry(event);
 199
 200     return entry ? entry->GetMenuItem() : NULL;
 201 }
 202
 203 int wxAcceleratorTable::GetCommand(const wxKeyEvent& event) const
 204 {
 205     const wxAcceleratorEntry *entry = GetEntry(event);
 206
 207     return entry ? entry->GetCommand() : -1;
 208 }
 209
 210 wxObjectRefData *wxAcceleratorTable::CreateRefData() const
 211 {
 212     return new wxAccelRefData;
 213 }
 214
 215 wxObjectRefData *wxAcceleratorTable::CloneRefData(const wxObjectRefData *data) const
 216 {
 217     return new wxAccelRefData(*(wxAccelRefData *)data);
 218 }
 219
 220 #endif // wxUSE_ACCEL