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