| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/gtk/choice.cpp |
| 3 | // Purpose: |
| 4 | // Author: Robert Roebling |
| 5 | // Id: $Id$ |
| 6 | // Copyright: (c) 1998 Robert Roebling |
| 7 | // Licence: wxWindows licence |
| 8 | ///////////////////////////////////////////////////////////////////////////// |
| 9 | |
| 10 | #include "wx/wxprec.h" |
| 11 | |
| 12 | #if wxUSE_CHOICE || wxUSE_COMBOBOX |
| 13 | |
| 14 | #include "wx/choice.h" |
| 15 | |
| 16 | #ifndef WX_PRECOMP |
| 17 | #include "wx/arrstr.h" |
| 18 | #endif |
| 19 | |
| 20 | #include "wx/gtk/private.h" |
| 21 | |
| 22 | |
| 23 | // ---------------------------------------------------------------------------- |
| 24 | // GTK callbacks |
| 25 | // ---------------------------------------------------------------------------- |
| 26 | |
| 27 | extern "C" { |
| 28 | |
| 29 | static void |
| 30 | gtk_choice_changed_callback( GtkWidget *WXUNUSED(widget), wxChoice *choice ) |
| 31 | { |
| 32 | choice->SendSelectionChangedEvent(wxEVT_COMMAND_CHOICE_SELECTED); |
| 33 | } |
| 34 | |
| 35 | } |
| 36 | |
| 37 | //----------------------------------------------------------------------------- |
| 38 | // wxChoice |
| 39 | //----------------------------------------------------------------------------- |
| 40 | |
| 41 | IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControlWithItems) |
| 42 | |
| 43 | void wxChoice::Init() |
| 44 | { |
| 45 | m_strings = (wxSortedArrayString *)NULL; |
| 46 | m_stringCellIndex = 0; |
| 47 | } |
| 48 | |
| 49 | bool wxChoice::Create( wxWindow *parent, wxWindowID id, |
| 50 | const wxPoint &pos, const wxSize &size, |
| 51 | const wxArrayString& choices, |
| 52 | long style, const wxValidator& validator, |
| 53 | const wxString &name ) |
| 54 | { |
| 55 | wxCArrayString chs(choices); |
| 56 | |
| 57 | return Create( parent, id, pos, size, chs.GetCount(), chs.GetStrings(), |
| 58 | style, validator, name ); |
| 59 | } |
| 60 | |
| 61 | bool wxChoice::Create( wxWindow *parent, wxWindowID id, |
| 62 | const wxPoint &pos, const wxSize &size, |
| 63 | int n, const wxString choices[], |
| 64 | long style, const wxValidator& validator, |
| 65 | const wxString &name ) |
| 66 | { |
| 67 | if (!PreCreation( parent, pos, size ) || |
| 68 | !CreateBase( parent, id, pos, size, style, validator, name )) |
| 69 | { |
| 70 | wxFAIL_MSG( wxT("wxChoice creation failed") ); |
| 71 | return false; |
| 72 | } |
| 73 | |
| 74 | if ( IsSorted() ) |
| 75 | { |
| 76 | // if our m_strings != NULL, Append() will check for it and insert |
| 77 | // items in the correct order |
| 78 | m_strings = new wxSortedArrayString; |
| 79 | } |
| 80 | |
| 81 | m_widget = gtk_combo_box_new_text(); |
| 82 | |
| 83 | Append(n, choices); |
| 84 | |
| 85 | m_parent->DoAddChild( this ); |
| 86 | |
| 87 | PostCreation(size); |
| 88 | |
| 89 | g_signal_connect_after (m_widget, "changed", |
| 90 | G_CALLBACK (gtk_choice_changed_callback), this); |
| 91 | |
| 92 | return true; |
| 93 | } |
| 94 | |
| 95 | wxChoice::~wxChoice() |
| 96 | { |
| 97 | delete m_strings; |
| 98 | } |
| 99 | |
| 100 | void wxChoice::SendSelectionChangedEvent(wxEventType evt_type) |
| 101 | { |
| 102 | if (!m_hasVMT) |
| 103 | return; |
| 104 | |
| 105 | if (GetSelection() == -1) |
| 106 | return; |
| 107 | |
| 108 | wxCommandEvent event( evt_type, GetId() ); |
| 109 | |
| 110 | int n = GetSelection(); |
| 111 | event.SetInt( n ); |
| 112 | event.SetString( GetStringSelection() ); |
| 113 | event.SetEventObject( this ); |
| 114 | InitCommandEventWithItems( event, n ); |
| 115 | |
| 116 | HandleWindowEvent( event ); |
| 117 | } |
| 118 | |
| 119 | void wxChoice::GTKInsertComboBoxTextItem( unsigned int n, const wxString& text ) |
| 120 | { |
| 121 | gtk_combo_box_insert_text( GTK_COMBO_BOX( m_widget ), n, wxGTK_CONV( text ) ); |
| 122 | } |
| 123 | |
| 124 | int wxChoice::DoInsertItems(const wxArrayStringsAdapter & items, |
| 125 | unsigned int pos, |
| 126 | void **clientData, wxClientDataType type) |
| 127 | { |
| 128 | wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid control") ); |
| 129 | |
| 130 | wxASSERT_MSG( !IsSorted() || (pos == GetCount()), |
| 131 | _T("In a sorted choice data could only be appended")); |
| 132 | |
| 133 | const int count = items.GetCount(); |
| 134 | |
| 135 | int n = wxNOT_FOUND; |
| 136 | |
| 137 | for ( int i = 0; i < count; ++i ) |
| 138 | { |
| 139 | n = pos + i; |
| 140 | // If sorted, use this wxSortedArrayStrings to determine |
| 141 | // the right insertion point |
| 142 | if(m_strings) |
| 143 | n = m_strings->Add(items[i]); |
| 144 | |
| 145 | GTKInsertComboBoxTextItem( n, items[i] ); |
| 146 | |
| 147 | m_clientData.Insert( NULL, n ); |
| 148 | AssignNewItemClientData(n, clientData, i, type); |
| 149 | } |
| 150 | |
| 151 | InvalidateBestSize(); |
| 152 | |
| 153 | return n; |
| 154 | } |
| 155 | |
| 156 | void wxChoice::DoSetItemClientData(unsigned int n, void* clientData) |
| 157 | { |
| 158 | m_clientData[n] = clientData; |
| 159 | } |
| 160 | |
| 161 | void* wxChoice::DoGetItemClientData(unsigned int n) const |
| 162 | { |
| 163 | return m_clientData[n]; |
| 164 | } |
| 165 | |
| 166 | void wxChoice::DoClear() |
| 167 | { |
| 168 | wxCHECK_RET( m_widget != NULL, wxT("invalid control") ); |
| 169 | |
| 170 | DisableEvents(); |
| 171 | |
| 172 | GtkComboBox* combobox = GTK_COMBO_BOX( m_widget ); |
| 173 | GtkTreeModel* model = gtk_combo_box_get_model( combobox ); |
| 174 | gtk_list_store_clear(GTK_LIST_STORE(model)); |
| 175 | |
| 176 | m_clientData.Clear(); |
| 177 | |
| 178 | if (m_strings) |
| 179 | m_strings->Clear(); |
| 180 | |
| 181 | EnableEvents(); |
| 182 | |
| 183 | InvalidateBestSize(); |
| 184 | } |
| 185 | |
| 186 | void wxChoice::DoDeleteOneItem(unsigned int n) |
| 187 | { |
| 188 | wxCHECK_RET( m_widget != NULL, wxT("invalid control") ); |
| 189 | wxCHECK_RET( IsValid(n), _T("invalid index in wxChoice::Delete") ); |
| 190 | |
| 191 | GtkComboBox* combobox = GTK_COMBO_BOX( m_widget ); |
| 192 | GtkTreeModel* model = gtk_combo_box_get_model( combobox ); |
| 193 | GtkListStore* store = GTK_LIST_STORE(model); |
| 194 | GtkTreeIter iter; |
| 195 | gtk_tree_model_iter_nth_child( model, &iter, |
| 196 | NULL, (gint) n ); |
| 197 | gtk_list_store_remove( store, &iter ); |
| 198 | |
| 199 | m_clientData.RemoveAt( n ); |
| 200 | if ( m_strings ) |
| 201 | m_strings->RemoveAt( n ); |
| 202 | |
| 203 | InvalidateBestSize(); |
| 204 | } |
| 205 | |
| 206 | int wxChoice::FindString( const wxString &item, bool bCase ) const |
| 207 | { |
| 208 | wxCHECK_MSG( m_widget != NULL, wxNOT_FOUND, wxT("invalid control") ); |
| 209 | |
| 210 | GtkComboBox* combobox = GTK_COMBO_BOX( m_widget ); |
| 211 | GtkTreeModel* model = gtk_combo_box_get_model( combobox ); |
| 212 | GtkTreeIter iter; |
| 213 | gtk_tree_model_get_iter_first( model, &iter ); |
| 214 | if (!gtk_list_store_iter_is_valid(GTK_LIST_STORE(model), &iter )) |
| 215 | return -1; |
| 216 | int count = 0; |
| 217 | do |
| 218 | { |
| 219 | GValue value = { 0, }; |
| 220 | gtk_tree_model_get_value( model, &iter, m_stringCellIndex, &value ); |
| 221 | wxString str = wxGTK_CONV_BACK( g_value_get_string( &value ) ); |
| 222 | g_value_unset( &value ); |
| 223 | |
| 224 | if (item.IsSameAs( str, bCase ) ) |
| 225 | return count; |
| 226 | |
| 227 | count++; |
| 228 | } |
| 229 | while ( gtk_tree_model_iter_next(model, &iter) ); |
| 230 | |
| 231 | return wxNOT_FOUND; |
| 232 | } |
| 233 | |
| 234 | int wxChoice::GetSelection() const |
| 235 | { |
| 236 | return gtk_combo_box_get_active( GTK_COMBO_BOX( m_widget ) ); |
| 237 | } |
| 238 | |
| 239 | void wxChoice::SetString(unsigned int n, const wxString &text) |
| 240 | { |
| 241 | wxCHECK_RET( m_widget != NULL, wxT("invalid control") ); |
| 242 | |
| 243 | GtkComboBox* combobox = GTK_COMBO_BOX( m_widget ); |
| 244 | wxCHECK_RET( IsValid(n), wxT("invalid index") ); |
| 245 | |
| 246 | GtkTreeModel *model = gtk_combo_box_get_model( combobox ); |
| 247 | GtkTreeIter iter; |
| 248 | if (gtk_tree_model_iter_nth_child (model, &iter, NULL, n)) |
| 249 | { |
| 250 | GValue value = { 0, }; |
| 251 | g_value_init( &value, G_TYPE_STRING ); |
| 252 | g_value_set_string( &value, wxGTK_CONV( text ) ); |
| 253 | gtk_list_store_set_value( GTK_LIST_STORE(model), &iter, m_stringCellIndex, &value ); |
| 254 | g_value_unset( &value ); |
| 255 | } |
| 256 | |
| 257 | InvalidateBestSize(); |
| 258 | } |
| 259 | |
| 260 | wxString wxChoice::GetString(unsigned int n) const |
| 261 | { |
| 262 | wxCHECK_MSG( m_widget != NULL, wxEmptyString, wxT("invalid control") ); |
| 263 | |
| 264 | wxString str; |
| 265 | |
| 266 | GtkComboBox* combobox = GTK_COMBO_BOX( m_widget ); |
| 267 | GtkTreeModel *model = gtk_combo_box_get_model( combobox ); |
| 268 | GtkTreeIter iter; |
| 269 | if (gtk_tree_model_iter_nth_child (model, &iter, NULL, n)) |
| 270 | { |
| 271 | GValue value = { 0, }; |
| 272 | gtk_tree_model_get_value( model, &iter, m_stringCellIndex, &value ); |
| 273 | wxString tmp = wxGTK_CONV_BACK( g_value_get_string( &value ) ); |
| 274 | g_value_unset( &value ); |
| 275 | return tmp; |
| 276 | } |
| 277 | |
| 278 | return str; |
| 279 | } |
| 280 | |
| 281 | unsigned int wxChoice::GetCount() const |
| 282 | { |
| 283 | wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid control") ); |
| 284 | |
| 285 | GtkComboBox* combobox = GTK_COMBO_BOX( m_widget ); |
| 286 | GtkTreeModel* model = gtk_combo_box_get_model( combobox ); |
| 287 | GtkTreeIter iter; |
| 288 | gtk_tree_model_get_iter_first( model, &iter ); |
| 289 | if (!gtk_list_store_iter_is_valid(GTK_LIST_STORE(model), &iter )) |
| 290 | return 0; |
| 291 | unsigned int ret = 1; |
| 292 | while (gtk_tree_model_iter_next( model, &iter )) |
| 293 | ret++; |
| 294 | return ret; |
| 295 | } |
| 296 | |
| 297 | void wxChoice::SetSelection( int n ) |
| 298 | { |
| 299 | wxCHECK_RET( m_widget != NULL, wxT("invalid control") ); |
| 300 | |
| 301 | DisableEvents(); |
| 302 | |
| 303 | GtkComboBox* combobox = GTK_COMBO_BOX( m_widget ); |
| 304 | gtk_combo_box_set_active( combobox, n ); |
| 305 | |
| 306 | EnableEvents(); |
| 307 | } |
| 308 | |
| 309 | void wxChoice::DisableEvents() |
| 310 | { |
| 311 | g_signal_handlers_block_by_func(m_widget, |
| 312 | (gpointer) gtk_choice_changed_callback, this); |
| 313 | } |
| 314 | |
| 315 | void wxChoice::EnableEvents() |
| 316 | { |
| 317 | g_signal_handlers_unblock_by_func(m_widget, |
| 318 | (gpointer) gtk_choice_changed_callback, this); |
| 319 | } |
| 320 | |
| 321 | |
| 322 | GdkWindow *wxChoice::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const |
| 323 | { |
| 324 | return m_widget->window; |
| 325 | } |
| 326 | |
| 327 | // Notice that this method shouldn't be necessary, because GTK calculates |
| 328 | // properly size of the combobox but for unknown reasons it doesn't work |
| 329 | // correctly in wx without this. |
| 330 | wxSize wxChoice::DoGetBestSize() const |
| 331 | { |
| 332 | // strangely, this returns a width of 188 pixels from GTK+ (?) |
| 333 | wxSize ret( wxControl::DoGetBestSize() ); |
| 334 | |
| 335 | // we know better our horizontal extent: it depends on the longest string |
| 336 | // in the combobox |
| 337 | if ( m_widget ) |
| 338 | { |
| 339 | ret.x = 60; // start with something "sensible" |
| 340 | int width; |
| 341 | unsigned int count = GetCount(); |
| 342 | for ( unsigned int n = 0; n < count; n++ ) |
| 343 | { |
| 344 | GetTextExtent(GetString(n), &width, NULL, NULL, NULL ); |
| 345 | if ( width + 40 > ret.x ) // 40 for drop down arrow and space around text |
| 346 | ret.x = width + 40; |
| 347 | } |
| 348 | } |
| 349 | |
| 350 | // empty combobox should have some reasonable default size too |
| 351 | if ((GetCount() == 0) && (ret.x < 80)) |
| 352 | ret.x = 80; |
| 353 | |
| 354 | CacheBestSize(ret); |
| 355 | return ret; |
| 356 | } |
| 357 | |
| 358 | // static |
| 359 | wxVisualAttributes |
| 360 | wxChoice::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant)) |
| 361 | { |
| 362 | return GetDefaultAttributesFromGTKWidget(gtk_combo_box_new); |
| 363 | } |
| 364 | |
| 365 | |
| 366 | #endif // wxUSE_CHOICE || wxUSE_COMBOBOX |