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