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, _T(""), 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( _T("") );
 217 #endif // wxUSE_STATUSBAR
 218 }
 219
 220 void MyFrame::OnOpen( wxCommandEvent& WXUNUSED(event) )
 221 {
 222     if (!Discard()) return;
 223
 224     wxFileDialog dialog( this, _T("Open text"), _T(""), _T(""),
 225         _T("Text file (*.txt)|*.txt|Any file (*)|*"),
 226         wxOPEN|wxFILE_MUST_EXIST );
 227     if (dialog.ShowModal() == wxID_OK)
 228     {
 229         m_text->Clear();
 230
 231 #ifdef __WXX11__
 232         // requires wxUSE_UNIV_TEXTCTRL to be set to 0
 233 #if 0
 234         wxFileName fname( dialog.GetPath() );
 235         if ((fname.GetExt() == _T("cpp")) ||
 236             (fname.GetExt() == _T("c")) ||
 237             (fname.GetExt() == _T("h")) ||
 238             (fname.GetExt() == _T("cxx")) ||
 239             (fname.GetExt() == _T("hxx")))
 240         {
 241             m_text->SetLanguage( wxSOURCE_LANG_CPP );
 242         }
 243         else
 244         if (fname.GetExt() == _T("py"))
 245         {
 246             m_text->SetLanguage( wxSOURCE_LANG_PYTHON );
 247         }
 248         else
 249         if ((fname.GetExt() == _T("pl")) ||
 250             (fname.GetExt() == _T("pm")))
 251         {
 252             m_text->SetLanguage( wxSOURCE_LANG_PYTHON );
 253         }
 254         else
 255         {
 256             m_text->SetLanguage( wxSOURCE_LANG_NONE );
 257         }
 258 #endif
 259 #endif
 260
 261         m_filename = dialog.GetPath();
 262         m_text->LoadFile( m_filename );
 263
 264 #if wxUSE_STATUSBAR
 265         SetStatusText( m_filename );
 266 #endif // wxUSE_STATUSBAR
 267     }
 268 }
 269
 270 void MyFrame::OnSave( wxCommandEvent& WXUNUSED(event) )
 271 {
 272     Save();
 273 }
 274
 275 void MyFrame::OnSaveAs( wxCommandEvent& WXUNUSED(event) )
 276 {
 277     wxFileDialog dialog( this, _T("Open text"), _T(""), _T(""),
 278         _T("Text file (*.txt)|*.txt|Any file (*)|*"),
 279         wxSAVE|wxOVERWRITE_PROMPT );
 280     if (dialog.ShowModal() == wxID_OK)
 281     {
 282         m_filename = dialog.GetPath();
 283         m_text->SaveFile( m_filename );
 284
 285 #if wxUSE_STATUSBAR
 286         SetStatusText( m_filename );
 287 #endif // wxUSE_STATUSBAR
 288     }
 289 }
 290
 291 void MyFrame::OnAbout( wxCommandEvent& WXUNUSED(event) )
 292 {
 293     wxMessageDialog dialog( this, _T("Welcome to wxEdit\n(C)opyright Robert Roebling"),
 294         _T("About wxEdit"), wxOK|wxICON_INFORMATION );
 295     dialog.ShowModal();
 296 }
 297
 298 void MyFrame::OnQuit( wxCommandEvent& WXUNUSED(event) )
 299 {
 300      Close( true );
 301 }
 302
 303 bool MyFrame::Save()
 304 {
 305     wxCommandEvent event;
 306
 307     if (m_filename.empty())
 308         OnSaveAs( event );
 309     else
 310         m_text->SaveFile( m_filename );
 311
 312    return true;
 313 }
 314
 315 bool MyFrame::Discard()
 316 {
 317     if (m_text->IsModified())
 318     {
 319         wxMessageDialog dialog( this, _T("Text has been\nmodified! Save?"),
 320             _T("wxEdit"), wxYES_NO|wxCANCEL|wxICON_EXCLAMATION );
 321
 322         int ret = dialog.ShowModal();
 323
 324         if (ret == wxID_CANCEL)
 325             return false;
 326
 327         if (ret == wxID_YES)
 328         {
 329             if (!Save())
 330                 return false;
 331         }
 332     }
 333
 334     return true;
 335 }
 336
 337 void MyFrame::OnUpdateUI( wxUpdateUIEvent &event )
 338 {
 339     switch (event.GetId())
 340     {
 341         case ID_COPY:
 342             event.Enable( false );
 343             break;
 344         case ID_CUT:
 345             event.Enable( false );
 346             break;
 347         case ID_PASTE:
 348             event.Enable( false );
 349             break;
 350         case ID_DELETE:
 351 #ifdef __WXUNIVERSAL__
 352             event.Enable( m_text->HasSelection() );
 353 #else
 354             {
 355               long selFrom, selTo;
 356               m_text->GetSelection(& selFrom, & selTo);
 357               event.Enable( selFrom != selTo );
 358             }
 359 #endif
 360             break;
 361         default:
 362             break;
 363     }
 364 }
 365
 366 void MyFrame::OnCloseWindow( wxCloseEvent& WXUNUSED(event) )
 367 {
 368     // Save changes?
 369     if (!Discard()) return;
 370
 371     // Add current to history
 372     if (!m_filename.empty())
 373         AddToHistory( m_filename );
 374
 375     // Write .ini file
 376     wxConfig *conf = (wxConfig*) wxConfig::Get();
 377
 378     int max = HISTORY_ENTRIES;
 379     if (m_history.GetCount() < (size_t)max)
 380         max = m_history.GetCount();
 381
 382     conf->Write( _T("/History/Count"), max );
 383
 384     for (int i = 0; i < max; i++)
 385     {
 386         wxString tmp;
 387         tmp.Printf( _T("/History/File%d"), (int)i );
 388
 389         conf->Write( tmp, m_history[(size_t)i] );
 390     }
 391
 392     // Flush and delete config
 393     delete wxConfig::Set( NULL );
 394
 395     // Finally destroy window and quit
 396     Destroy();
 397 }
 398
 399 //------------------------------------------------------------------------------
 400 // MyApp
 401 //------------------------------------------------------------------------------
 402
 403 IMPLEMENT_APP(MyApp)
 404
 405 bool MyApp::OnInit()
 406 {
 407     SetVendorName(_T("Free world"));
 408     SetAppName(_T("wxEdit"));
 409
 410     MyFrame *frame = new MyFrame( NULL, wxID_ANY, _T("wxEdit"), wxPoint(20,20), wxSize(500,340) );
 411     frame->Show( true );
 412
 413     return true;
 414 }
 415
 416 int MyApp::OnExit()
 417 {
 418     return 0;
 419 }
 420