| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: combobox.cpp |
| 3 | // Purpose: wxComboBox class |
| 4 | // Author: Julian Smart |
| 5 | // Modified by: |
| 6 | // Created: 01/02/97 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Julian Smart and Markus Holzem |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | #ifdef __GNUG__ |
| 13 | #pragma implementation "combobox.h" |
| 14 | #endif |
| 15 | |
| 16 | // For compilers that support precompilation, includes "wx.h". |
| 17 | #include "wx/wxprec.h" |
| 18 | |
| 19 | #ifdef __BORLANDC__ |
| 20 | #pragma hdrstop |
| 21 | #endif |
| 22 | |
| 23 | #ifndef WX_PRECOMP |
| 24 | #include "wx/setup.h" |
| 25 | #endif |
| 26 | |
| 27 | #if wxUSE_COMBOBOX |
| 28 | |
| 29 | #include "wx/combobox.h" |
| 30 | #include "wx/clipbrd.h" |
| 31 | #include "wx/msw/private.h" |
| 32 | |
| 33 | #if !USE_SHARED_LIBRARY |
| 34 | IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl) |
| 35 | #endif |
| 36 | |
| 37 | bool wxComboBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id)) |
| 38 | { |
| 39 | if (param == CBN_SELCHANGE) |
| 40 | { |
| 41 | wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, m_windowId); |
| 42 | event.SetInt(GetSelection()); |
| 43 | event.SetEventObject(this); |
| 44 | event.SetString(GetStringSelection()); |
| 45 | ProcessCommand(event); |
| 46 | |
| 47 | return TRUE; |
| 48 | } |
| 49 | else if (param == CBN_EDITCHANGE) |
| 50 | { |
| 51 | wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_windowId); |
| 52 | event.SetString(GetValue()); |
| 53 | event.SetEventObject(this); |
| 54 | ProcessCommand(event); |
| 55 | |
| 56 | return TRUE; |
| 57 | } |
| 58 | else |
| 59 | return FALSE; |
| 60 | } |
| 61 | |
| 62 | bool wxComboBox::Create(wxWindow *parent, wxWindowID id, |
| 63 | const wxString& value, |
| 64 | const wxPoint& pos, |
| 65 | const wxSize& size, |
| 66 | int n, const wxString choices[], |
| 67 | long style, |
| 68 | const wxValidator& validator, |
| 69 | const wxString& name) |
| 70 | { |
| 71 | SetName(name); |
| 72 | SetValidator(validator); |
| 73 | if (parent) parent->AddChild(this); |
| 74 | SetBackgroundColour(parent->GetBackgroundColour()) ; |
| 75 | SetForegroundColour(parent->GetForegroundColour()) ; |
| 76 | m_noStrings = 0; |
| 77 | |
| 78 | m_windowStyle = style; |
| 79 | |
| 80 | if ( id == -1 ) |
| 81 | m_windowId = (int)NewControlId(); |
| 82 | else |
| 83 | m_windowId = id; |
| 84 | |
| 85 | int x = pos.x; |
| 86 | int y = pos.y; |
| 87 | int width = size.x; |
| 88 | int height = size.y; |
| 89 | |
| 90 | long msStyle = WS_CHILD | WS_HSCROLL | WS_VSCROLL | |
| 91 | WS_TABSTOP | WS_VISIBLE | CBS_NOINTEGRALHEIGHT; |
| 92 | |
| 93 | if (m_windowStyle & wxCB_READONLY) |
| 94 | msStyle |= CBS_DROPDOWNLIST; |
| 95 | else if (m_windowStyle & wxCB_SIMPLE) |
| 96 | msStyle |= CBS_SIMPLE; // A list (shown always) and edit control |
| 97 | else |
| 98 | msStyle |= CBS_DROPDOWN; |
| 99 | |
| 100 | if (m_windowStyle & wxCB_SORT) |
| 101 | msStyle |= CBS_SORT; |
| 102 | |
| 103 | bool want3D; |
| 104 | WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D) ; |
| 105 | |
| 106 | // Even with extended styles, need to combine with WS_BORDER |
| 107 | // for them to look right. |
| 108 | if ( want3D || wxStyleHasBorder(m_windowStyle) ) |
| 109 | msStyle |= WS_BORDER; |
| 110 | |
| 111 | m_hWnd = (WXHWND)::CreateWindowEx(exStyle, _T("COMBOBOX"), NULL, |
| 112 | msStyle, |
| 113 | 0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId, |
| 114 | wxGetInstance(), NULL); |
| 115 | |
| 116 | wxCHECK_MSG( m_hWnd, FALSE, _T("Failed to create combobox") ); |
| 117 | |
| 118 | /* |
| 119 | #if wxUSE_CTL3D |
| 120 | if (want3D) |
| 121 | { |
| 122 | Ctl3dSubclassCtl(wx_combo); |
| 123 | m_useCtl3D = TRUE; |
| 124 | } |
| 125 | #endif |
| 126 | */ |
| 127 | |
| 128 | // Subclass again for purposes of dialog editing mode |
| 129 | SubclassWin(m_hWnd); |
| 130 | |
| 131 | SetFont(parent->GetFont()); |
| 132 | int i; |
| 133 | for (i = 0; i < n; i++) |
| 134 | { |
| 135 | Append(choices[i]); |
| 136 | } |
| 137 | |
| 138 | SetSelection(i); |
| 139 | |
| 140 | SetSize(x, y, width, height); |
| 141 | if ( !value.IsEmpty() ) |
| 142 | { |
| 143 | SetValue(value); |
| 144 | } |
| 145 | |
| 146 | return TRUE; |
| 147 | } |
| 148 | |
| 149 | void wxComboBox::SetValue(const wxString& value) |
| 150 | { |
| 151 | // If newlines are denoted by just 10, must stick 13 in front. |
| 152 | int singletons = 0; |
| 153 | int len = value.Length(); |
| 154 | int i; |
| 155 | for (i = 0; i < len; i ++) |
| 156 | { |
| 157 | if ((i > 0) && (value[i] == 10) && (value[i-1] != 13)) |
| 158 | singletons ++; |
| 159 | } |
| 160 | if (singletons > 0) |
| 161 | { |
| 162 | wxChar *tmp = new wxChar[len + singletons + 1]; |
| 163 | int j = 0; |
| 164 | for (i = 0; i < len; i ++) |
| 165 | { |
| 166 | if ((i > 0) && (value[i] == 10) && (value[i-1] != 13)) |
| 167 | { |
| 168 | tmp[j] = 13; |
| 169 | j ++; |
| 170 | } |
| 171 | tmp[j] = value[i]; |
| 172 | j ++; |
| 173 | } |
| 174 | tmp[j] = 0; |
| 175 | SetWindowText(GetHwnd(), tmp); |
| 176 | delete[] tmp; |
| 177 | } |
| 178 | else |
| 179 | SetWindowText(GetHwnd(), value); |
| 180 | } |
| 181 | |
| 182 | // Clipboard operations |
| 183 | void wxComboBox::Copy() |
| 184 | { |
| 185 | HWND hWnd = GetHwnd(); |
| 186 | SendMessage(hWnd, WM_COPY, 0, 0L); |
| 187 | } |
| 188 | |
| 189 | void wxComboBox::Cut() |
| 190 | { |
| 191 | HWND hWnd = GetHwnd(); |
| 192 | SendMessage(hWnd, WM_CUT, 0, 0L); |
| 193 | } |
| 194 | |
| 195 | void wxComboBox::Paste() |
| 196 | { |
| 197 | HWND hWnd = GetHwnd(); |
| 198 | SendMessage(hWnd, WM_PASTE, 0, 0L); |
| 199 | } |
| 200 | |
| 201 | void wxComboBox::SetEditable(bool editable) |
| 202 | { |
| 203 | // Can't implement in MSW? |
| 204 | // HWND hWnd = GetHwnd(); |
| 205 | // SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L); |
| 206 | } |
| 207 | |
| 208 | void wxComboBox::SetInsertionPoint(long pos) |
| 209 | { |
| 210 | /* |
| 211 | HWND hWnd = GetHwnd(); |
| 212 | #ifdef __WIN32__ |
| 213 | SendMessage(hWnd, EM_SETSEL, pos, pos); |
| 214 | SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0); |
| 215 | #else |
| 216 | SendMessage(hWnd, EM_SETSEL, 0, MAKELPARAM(pos, pos)); |
| 217 | #endif |
| 218 | char *nothing = ""; |
| 219 | SendMessage(hWnd, EM_REPLACESEL, 0, (LPARAM)nothing); |
| 220 | */ |
| 221 | } |
| 222 | |
| 223 | void wxComboBox::SetInsertionPointEnd() |
| 224 | { |
| 225 | /* |
| 226 | long pos = GetLastPosition(); |
| 227 | SetInsertionPoint(pos); |
| 228 | */ |
| 229 | } |
| 230 | |
| 231 | long wxComboBox::GetInsertionPoint() const |
| 232 | { |
| 233 | /* |
| 234 | DWORD Pos=(DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L); |
| 235 | return Pos&0xFFFF; |
| 236 | */ |
| 237 | return 0; |
| 238 | } |
| 239 | |
| 240 | long wxComboBox::GetLastPosition() const |
| 241 | { |
| 242 | /* |
| 243 | HWND hWnd = GetHwnd(); |
| 244 | |
| 245 | // Will always return a number > 0 (according to docs) |
| 246 | int noLines = (int)SendMessage(hWnd, EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0L); |
| 247 | |
| 248 | // This gets the char index for the _beginning_ of the last line |
| 249 | int charIndex = (int)SendMessage(hWnd, EM_LINEINDEX, (WPARAM)(noLines-1), (LPARAM)0L); |
| 250 | |
| 251 | // Get number of characters in the last line. We'll add this to the character |
| 252 | // index for the last line, 1st position. |
| 253 | int lineLength = (int)SendMessage(hWnd, EM_LINELENGTH, (WPARAM)charIndex, (LPARAM)0L); |
| 254 | |
| 255 | return (long)(charIndex + lineLength); |
| 256 | */ |
| 257 | return 0; |
| 258 | } |
| 259 | |
| 260 | void wxComboBox::Replace(long from, long to, const wxString& value) |
| 261 | { |
| 262 | #if wxUSE_CLIPBOARD |
| 263 | HWND hWnd = GetHwnd(); |
| 264 | long fromChar = from; |
| 265 | long toChar = to; |
| 266 | |
| 267 | // Set selection and remove it |
| 268 | #ifdef __WIN32__ |
| 269 | SendMessage(hWnd, CB_SETEDITSEL, fromChar, toChar); |
| 270 | #else |
| 271 | SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar)); |
| 272 | #endif |
| 273 | SendMessage(hWnd, WM_CUT, (WPARAM)0, (LPARAM)0); |
| 274 | |
| 275 | // Now replace with 'value', by pasting. |
| 276 | wxSetClipboardData(wxDF_TEXT, (wxObject *)(const wxChar *)value, 0, 0); |
| 277 | |
| 278 | // Paste into edit control |
| 279 | SendMessage(hWnd, WM_PASTE, (WPARAM)0, (LPARAM)0L); |
| 280 | #endif |
| 281 | } |
| 282 | |
| 283 | void wxComboBox::Remove(long from, long to) |
| 284 | { |
| 285 | HWND hWnd = GetHwnd(); |
| 286 | long fromChar = from; |
| 287 | long toChar = to; |
| 288 | |
| 289 | // Cut all selected text |
| 290 | #ifdef __WIN32__ |
| 291 | SendMessage(hWnd, CB_SETEDITSEL, fromChar, toChar); |
| 292 | #else |
| 293 | SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar)); |
| 294 | #endif |
| 295 | SendMessage(hWnd, WM_CUT, (WPARAM)0, (LPARAM)0); |
| 296 | } |
| 297 | |
| 298 | void wxComboBox::SetSelection(long from, long to) |
| 299 | { |
| 300 | HWND hWnd = GetHwnd(); |
| 301 | long fromChar = from; |
| 302 | long toChar = to; |
| 303 | // if from and to are both -1, it means |
| 304 | // (in wxWindows) that all text should be selected. |
| 305 | // This translates into Windows convention |
| 306 | if ((from == -1) && (to == -1)) |
| 307 | { |
| 308 | fromChar = 0; |
| 309 | toChar = -1; |
| 310 | } |
| 311 | |
| 312 | #ifdef __WIN32__ |
| 313 | SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)fromChar, (LPARAM)toChar); |
| 314 | // SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0); |
| 315 | #else |
| 316 | // WPARAM is 0: selection is scrolled into view |
| 317 | SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar)); |
| 318 | #endif |
| 319 | } |
| 320 | |
| 321 | void wxComboBox::DoSetSize(int x, int y, |
| 322 | int width, int height, |
| 323 | int sizeFlags) |
| 324 | { |
| 325 | wxControl::DoSetSize(x, y, width, height, sizeFlags); |
| 326 | } |
| 327 | |
| 328 | #endif |
| 329 | // wxUSE_COMBOBOX |
| 330 | |