samples/mobile/wxedit/wxedit.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wxedit.cpp
   3 // Author:      Robert Roebling
   4 // Created:     04/07/02
   5 // Copyright:
   6 /////////////////////////////////////////////////////////////////////////////
   7
   8 #ifdef __GNUG__
   9     #pragma implementation "wxedit.h"
  10 #endif
  11
  12 // For compilers that support precompilation
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16     #pragma hdrstop
  17 #endif
  18
  19 #include "wx/filename.h"
  20 #include "wx/config.h"
  21
  22 // Include private headers
  23 #include "wxedit.h"
  24
  25 //------------------------------------------------------------------------------
  26 // constants
  27 //------------------------------------------------------------------------------
  28
  29 #define HISTORY_ENTRIES 3
  30
  31 //------------------------------------------------------------------------------
  32 // MyFrame
  33 //------------------------------------------------------------------------------
  34
  35 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
  36     EVT_MENU(ID_ABOUT, MyFrame::OnAbout)
  37
  38     EVT_MENU(ID_NEW, MyFrame::OnNew)
  39     EVT_MENU(ID_OPEN, MyFrame::OnOpen)
  40     EVT_MENU(ID_SAVE, MyFrame::OnSave)
  41     EVT_MENU(ID_SAVEAS, MyFrame::OnSaveAs)
  42     EVT_MENU(ID_QUIT, MyFrame::OnQuit)
  43
  44     EVT_MENU(ID_COPY, MyFrame::OnCopy)
  45     EVT_MENU(ID_CUT, MyFrame::OnCut)
  46     EVT_MENU(ID_PASTE, MyFrame::OnPaste)
  47     EVT_MENU(ID_DELETE, MyFrame::OnDelete)
  48
  49     EVT_MENU_RANGE(ID_LAST_1, ID_LAST_3, MyFrame::OnLastFiles)
  50
  51     EVT_CLOSE(MyFrame::OnCloseWindow)
  52     EVT_UPDATE_UI(wxID_ANY,MyFrame::OnUpdateUI)
  53 END_EVENT_TABLE()
  54
  55 MyFrame::MyFrame( wxWindow *parent, wxWindowID id, const wxString &title,
  56     const wxPoint &position, const wxSize& size, long style ) :
  57     wxFrame( parent, id, title, position, size, style )
  58 {
  59     // Create menu and status bar.
  60     CreateMyMenuBar();
  61 #if wxUSE_STATUSBAR
  62     CreateStatusBar(1);
  63     SetStatusText( _T("Welcome to wxEdit!") );
  64 #endif // wxUSE_STATUSBAR
  65
  66     // Create edit control. Since it is the only
  67     // control in the frame, it will be resized
  68     // to file it out.
  69     m_text = new wxTextCtrl( this, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize, wxTE_MULTILINE );
  70
  71     // Read .ini file for file history etc.
  72     wxConfig *conf = (wxConfig*) wxConfig::Get();
  73
  74     int entries = 0;
  75     conf->Read( _T("/History/Count"), &entries );
  76
  77     for (int i = 0; i < entries; i++)
  78     {
  79         wxString tmp;
  80         tmp.Printf( _T("/History/File%d"), (int)i );
  81
  82         wxString res;
  83         conf->Read( tmp, &res );
  84
  85         if (!res.empty())
  86             AddToHistory( res );
  87     }
  88 }
  89
  90 void MyFrame::MakeHistory()
  91 {
  92     wxMenuBar *mb = GetMenuBar();
  93
  94     wxASSERT( mb );
  95
  96     int max = m_history.GetCount();
  97     if (max > HISTORY_ENTRIES)
  98         max = HISTORY_ENTRIES;
  99
 100     for (int i = 0; i < max; i++)
 101     {
 102         wxMenu *menu = NULL;
 103         mb->FindItem( ID_LAST_1 + i, &menu );
 104         wxASSERT( menu );
 105
 106         wxFileName fname( m_history[(size_t)i] );
 107         menu->SetLabel( ID_LAST_1 + i, fname.GetFullName() );
 108     }
 109 }
 110
 111 void MyFrame::AddToHistory( const wxString &fname )
 112 {
 113     // Fill menu with history index
 114     int index = m_history.Index( fname );
 115
 116     if (index != wxNOT_FOUND)
 117         m_history.RemoveAt( (size_t) index );
 118
 119     m_history.Insert( fname, 0 );
 120
 121     // Update menu
 122     MakeHistory();
 123 }
 124
 125 void MyFrame::CreateMyMenuBar()
 126 {
 127     wxMenu *file_menu = new wxMenu;
 128     file_menu->Append( ID_ABOUT, _T("About..."), _T("Program info") );
 129     file_menu->AppendSeparator();
 130     file_menu->Append( ID_NEW, _T("New..."), _T("New text") );
 131     file_menu->Append( ID_OPEN, _T("Open..."), _T("Open text") );
 132     file_menu->Append( ID_SAVE, _T("Save"), _T("Save text") );
 133     file_menu->Append( ID_SAVEAS, _T("Save as..."), _T("Save text as...") );
 134     file_menu->AppendSeparator();
 135     file_menu->Append( ID_QUIT, _T("Quit..."), _T("Quit program") );
 136
 137     wxMenu *edit_menu = new wxMenu;
 138     edit_menu->Append( ID_COPY, _T("Copy") );
 139     edit_menu->Append( ID_CUT, _T("Cut") );
 140     edit_menu->Append( ID_PASTE, _T("Paste") );
 141     edit_menu->AppendSeparator();
 142     edit_menu->Append( ID_DELETE, _T("Delete") );
 143
 144     wxMenu *history_menu = new wxMenu;
 145     history_menu->Append( ID_LAST_1, _T("No file.") );
 146     history_menu->Append( ID_LAST_2, _T("No file.") );
 147     history_menu->Append( ID_LAST_3, _T("No file.") );
 148
 149     wxMenuBar *menu_bar = new wxMenuBar();
 150     menu_bar->Append( file_menu, _T("&File") );
 151     menu_bar->Append( edit_menu, _T("&Edit") );
 152     menu_bar->Append( history_menu, _T("&History") );
 153
 154     SetMenuBar( menu_bar );
 155 }
 156
 157 void MyFrame::OnCopy( wxCommandEvent& WXUNUSED(event) )
 158 {
 159 }
 160
 161 void MyFrame::OnCut( wxCommandEvent& WXUNUSED(event) )
 162 {
 163 }
 164
 165 void MyFrame::OnPaste( wxCommandEvent& WXUNUSED(event) )
 166 {
 167 }
 168
 169 void MyFrame::OnDelete( wxCommandEvent& WXUNUSED(event) )
 170 {
 171 }
 172
 173 void MyFrame::OnLastFiles( wxCommandEvent &event )
 174 {
 175     if (!Discard()) return;
 176
 177     if (!m_filename.empty())
 178         AddToHistory( m_filename );
 179
 180     size_t index = event.GetId() - ID_LAST_1;
 181
 182     if( index < m_history.GetCount() )
 183     {
 184         m_filename = m_history[index];
 185
 186         m_text->Clear();
 187         m_text->LoadFile( m_filename );
 188
 189 #if wxUSE_STATUSBAR
 190         SetStatusText( m_filename );
 191 #endif // wxUSE_STATUSBAR
 192     }
 193     else
 194     {
 195         wxMessageBox(
 196             _T("This entry is empty. It should be filled once you will start opening."),
 197             _T("Empty entry"),
 198             wxOK | wxICON_INFORMATION,
 199             this
 200         );
 201     }
 202 }
 203
 204 void MyFrame::OnNew( wxCommandEvent& WXUNUSED(event) )
 205 {
 206     if (!Discard()) return;
 207
 208     m_text->Clear();
 209
 210     if (!m_filename.empty())
 211         AddToHistory( m_filename );
 212
 213     m_filename = wxEmptyString;
 214
 215 #if wxUSE_STATUSBAR
 216     SetStatusText( wxEmptyString );
 217 #endif // wxUSE_STATUSBAR
 218 }
 219
 220 void MyFrame::OnOpen( wxCommandEvent& WXUNUSED(event) )
 221 {
 222 #if wxUSE_FILEDLG
 223     if (!Discard()) return;
 224
 225     wxFileDialog dialog( this, _T("Open text"), wxEmptyString, wxEmptyString,
 226         _T("Text file (*.txt)|*.txt|Any file (*)|*"),
 227         wxOPEN|wxFILE_MUST_EXIST );
 228     if (dialog.ShowModal() == wxID_OK)
 229     {
 230         m_text->Clear();
 231
 232 #ifdef __WXX11__
 233         // requires wxUSE_UNIV_TEXTCTRL to be set to 0
 234 #if 0
 235         wxFileName fname( dialog.GetPath() );
 236         if ((fname.GetExt() == _T("cpp")) ||
 237             (fname.GetExt() == _T("c")) ||
 238             (fname.GetExt() == _T("h")) ||
 239             (fname.GetExt() == _T("cxx")) ||
 240             (fname.GetExt() == _T("hxx")))
 241         {
 242             m_text->SetLanguage( wxSOURCE_LANG_CPP );
 243         }
 244         else
 245         if (fname.GetExt() == _T("py"))
 246         {
 247             m_text->SetLanguage( wxSOURCE_LANG_PYTHON );
 248         }
 249         else
 250         if ((fname.GetExt() == _T("pl")) ||
 251             (fname.GetExt() == _T("pm")))
 252         {
 253             m_text->SetLanguage( wxSOURCE_LANG_PYTHON );
 254         }
 255         else
 256         {
 257             m_text->SetLanguage( wxSOURCE_LANG_NONE );
 258         }
 259 #endif
 260 #endif
 261
 262         m_filename = dialog.GetPath();
 263         m_text->LoadFile( m_filename );
 264
 265 #if wxUSE_STATUSBAR
 266         SetStatusText( m_filename );
 267 #endif // wxUSE_STATUSBAR
 268     }
 269 #endif // wxUSE_FILEDLG
 270 }
 271
 272 void MyFrame::OnSave( wxCommandEvent& WXUNUSED(event) )
 273 {
 274     Save();
 275 }
 276
 277 void MyFrame::OnSaveAs( wxCommandEvent& WXUNUSED(event) )
 278 {
 279 #if wxUSE_FILEDLG
 280     wxFileDialog dialog( this, _T("Open text"), wxEmptyString, wxEmptyString,
 281         _T("Text file (*.txt)|*.txt|Any file (*)|*"),
 282         wxSAVE|wxOVERWRITE_PROMPT );
 283     if (dialog.ShowModal() == wxID_OK)
 284     {
 285         m_filename = dialog.GetPath();
 286         m_text->SaveFile( m_filename );
 287
 288 #if wxUSE_STATUSBAR
 289         SetStatusText( m_filename );
 290 #endif // wxUSE_STATUSBAR
 291     }
 292 #endif // wxUSE_FILEDLG
 293 }
 294
 295 void MyFrame::OnAbout( wxCommandEvent& WXUNUSED(event) )
 296 {
 297     wxMessageDialog dialog( this, _T("Welcome to wxEdit\n(C)opyright Robert Roebling"),
 298         _T("About wxEdit"), wxOK|wxICON_INFORMATION );
 299     dialog.ShowModal();
 300 }
 301
 302 void MyFrame::OnQuit( wxCommandEvent& WXUNUSED(event) )
 303 {
 304      Close( true );
 305 }
 306
 307 bool MyFrame::Save()
 308 {
 309     wxCommandEvent event;
 310
 311     if (m_filename.empty())
 312         OnSaveAs( event );
 313     else
 314         m_text->SaveFile( m_filename );
 315
 316    return true;
 317 }
 318
 319 bool MyFrame::Discard()
 320 {
 321     if (m_text->IsModified())
 322     {
 323         wxMessageDialog dialog( this, _T("Text has been\nmodified! Save?"),
 324             _T("wxEdit"), wxYES_NO|wxCANCEL|wxICON_EXCLAMATION );
 325
 326         int ret = dialog.ShowModal();
 327
 328         if (ret == wxID_CANCEL)
 329             return false;
 330
 331         if (ret == wxID_YES)
 332         {
 333             if (!Save())
 334                 return false;
 335         }
 336     }
 337
 338     return true;
 339 }
 340
 341 void MyFrame::OnUpdateUI( wxUpdateUIEvent &event )
 342 {
 343     switch (event.GetId())
 344     {
 345         case ID_COPY:
 346             event.Enable( false );
 347             break;
 348         case ID_CUT:
 349             event.Enable( false );
 350             break;
 351         case ID_PASTE:
 352             event.Enable( false );
 353             break;
 354         case ID_DELETE:
 355 #ifdef __WXUNIVERSAL__
 356             event.Enable( m_text->HasSelection() );
 357 #else
 358             {
 359               long selFrom, selTo;
 360               m_text->GetSelection(& selFrom, & selTo);
 361               event.Enable( selFrom != selTo );
 362             }
 363 #endif
 364             break;
 365         default:
 366             break;
 367     }
 368 }
 369
 370 void MyFrame::OnCloseWindow( wxCloseEvent& WXUNUSED(event) )
 371 {
 372     // Save changes?
 373     if (!Discard()) return;
 374
 375     // Add current to history
 376     if (!m_filename.empty())
 377         AddToHistory( m_filename );
 378
 379     // Write .ini file
 380     wxConfig *conf = (wxConfig*) wxConfig::Get();
 381
 382     int max = HISTORY_ENTRIES;
 383     if (m_history.GetCount() < (size_t)max)
 384         max = m_history.GetCount();
 385
 386     conf->Write( _T("/History/Count"), max );
 387
 388     for (int i = 0; i < max; i++)
 389     {
 390         wxString tmp;
 391         tmp.Printf( _T("/History/File%d"), (int)i );
 392
 393         conf->Write( tmp, m_history[(size_t)i] );
 394     }
 395
 396     // Flush and delete config
 397     delete wxConfig::Set( NULL );
 398
 399     // Finally destroy window and quit
 400     Destroy();
 401 }
 402
 403 //------------------------------------------------------------------------------
 404 // MyApp
 405 //------------------------------------------------------------------------------
 406
 407 IMPLEMENT_APP(MyApp)
 408
 409 bool MyApp::OnInit()
 410 {
 411     SetVendorName(_T("Free world"));
 412     SetAppName(_T("wxEdit"));
 413
 414     MyFrame *frame = new MyFrame( NULL, wxID_ANY, _T("wxEdit"), wxPoint(20,20), wxSize(500,340) );
 415     frame->Show( true );
 416
 417     return true;
 418 }
 419
 420 int MyApp::OnExit()
 421 {
 422     return 0;
 423 }