samples/html/test/test.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        test.cpp
   3 // Purpose:     wxHtml testing example
   4 /////////////////////////////////////////////////////////////////////////////
   5
   6 #ifdef __GNUG__
   7     #pragma implementation "test.cpp"
   8     #pragma interface "test.cpp"
   9 #endif
  10
  11 // For compilers that support precompilation, includes "wx/wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 // for all others, include the necessary headers (this file is usually all you
  19 // need because it includes almost all "standard" wxWindows headers
  20 #ifndef WX_PRECOMP
  21     #include <wx/wx.h>
  22 #endif
  23
  24 #include "wx/image.h"
  25 #include "wx/sysopt.h"
  26 #include "wx/html/htmlwin.h"
  27 #include "wx/html/htmlproc.h"
  28 #include "wx/fs_inet.h"
  29 #include "wx/filedlg.h"
  30
  31 // ----------------------------------------------------------------------------
  32 // private classes
  33 // ----------------------------------------------------------------------------
  34
  35 // Define a new application type, each program should derive a class from wxApp
  36 class MyApp : public wxApp
  37 {
  38 public:
  39  // override base class virtuals
  40  // ----------------------------
  41
  42  // this one is called on application startup and is a good place for the app
  43  // initialization (doing it here and not in the ctor allows to have an error
  44  // return: if OnInit() returns false, the application terminates)
  45    virtual bool OnInit();
  46 };
  47
  48 // Define a new frame type: this is going to be our main frame
  49 class MyFrame : public wxFrame
  50 {
  51 public:
  52  // ctor(s)
  53     MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
  54
  55   // event handlers (these functions should _not_ be virtual)
  56     void OnQuit(wxCommandEvent& event);
  57     void OnPageOpen(wxCommandEvent& event);
  58     void OnBack(wxCommandEvent& event);
  59     void OnForward(wxCommandEvent& event);
  60     void OnProcessor(wxCommandEvent& event);
  61
  62 private:
  63      wxHtmlWindow *m_Html;
  64      wxHtmlProcessor *m_Processor;
  65  // any class wishing to process wxWindows events must use this macro
  66  DECLARE_EVENT_TABLE()
  67 };
  68
  69
  70 class BoldProcessor : public wxHtmlProcessor
  71 {
  72     public:
  73         virtual wxString Process(const wxString& s) const
  74         {
  75             wxString r(s);
  76             r.Replace(wxT("<b>"), wxEmptyString);
  77             r.Replace(wxT("<B>"), wxEmptyString);
  78             r.Replace(wxT("</b>"), wxEmptyString);
  79             r.Replace(wxT("</B>"), wxEmptyString);
  80             return r;
  81         }
  82 };
  83
  84 // ----------------------------------------------------------------------------
  85 // constants
  86 // ----------------------------------------------------------------------------
  87
  88 // IDs for the controls and the menu commands
  89    enum
  90    {
  91     // menu items
  92    Minimal_Quit = 1,
  93    Minimal_PageOpen,
  94    Minimal_Back,
  95    Minimal_Forward,
  96    Minimal_Processor,
  97
  98     // controls start here (the numbers are, of course, arbitrary)
  99    Minimal_Text = 1000
 100    };
 101
 102 // ----------------------------------------------------------------------------
 103 // event tables and other macros for wxWindows
 104 // ----------------------------------------------------------------------------
 105
 106 // the event tables connect the wxWindows events with the functions (event
 107 // handlers) which process them. It can be also done at run-time, but for the
 108 // simple menu events like this the static method is much simpler.
 109    BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 110    EVT_MENU(Minimal_Quit,  MyFrame::OnQuit)
 111    EVT_MENU(Minimal_PageOpen, MyFrame::OnPageOpen)
 112    EVT_MENU(Minimal_Back, MyFrame::OnBack)
 113    EVT_MENU(Minimal_Forward, MyFrame::OnForward)
 114    EVT_MENU(Minimal_Processor, MyFrame::OnProcessor)
 115    END_EVENT_TABLE()
 116
 117    // Create a new application object: this macro will allow wxWindows to create
 118    // the application object during program execution (it's better than using a
 119    // static object for many reasons) and also declares the accessor function
 120    // wxGetApp() which will return the reference of the right type (i.e. MyApp and
 121    // not wxApp)
 122    IMPLEMENT_APP(MyApp)
 123
 124    // ============================================================================
 125    // implementation
 126    // ============================================================================
 127
 128    // ----------------------------------------------------------------------------
 129    // the application class
 130    // ----------------------------------------------------------------------------
 131    // `Main program' equivalent: the program execution "starts" here
 132    bool MyApp::OnInit()
 133    {
 134      wxLog::AddTraceMask(wxT("strconv"));
 135 #if wxUSE_SYSTEM_OPTIONS
 136      wxSystemOptions::SetOption(wxT("no-maskblt"), 1);
 137 #endif
 138
 139      wxInitAllImageHandlers();
 140 #if wxUSE_FS_INET && wxUSE_STREAMS && wxUSE_SOCKETS
 141      wxFileSystem::AddHandler(new wxInternetFSHandler);
 142 #endif
 143
 144       SetVendorName("wxWindows");
 145       SetAppName("wxHtmlTest");
 146       // the following call to wxConfig::Get will use it to create an object...
 147
 148     // Create the main application window
 149       MyFrame *frame = new MyFrame("wxHtmlWindow testing application",
 150          wxPoint(50, 50), wxSize(640, 480));
 151
 152     // Show it and tell the application that it's our main window
 153     // @@@ what does it do exactly, in fact? is it necessary here?
 154       frame->Show(TRUE);
 155       SetTopWindow(frame);
 156
 157
 158     // success: wxApp::OnRun() will be called which will enter the main message
 159     // loop and the application will run. If we returned FALSE here, the
 160     // application would exit immediately.
 161        return TRUE;
 162    }
 163
 164 // ----------------------------------------------------------------------------
 165 // main frame
 166 // ----------------------------------------------------------------------------
 167
 168
 169 // frame constructor
 170    MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 171    : wxFrame((wxFrame *)NULL, -1, title, pos, size, wxDEFAULT_FRAME_STYLE, "html_test_app")
 172    {
 173     // create a menu bar
 174       wxMenu *menuFile = new wxMenu;
 175       wxMenu *menuNav = new wxMenu;
 176
 177       menuFile->Append(Minimal_PageOpen, "&Open HTML page...");
 178       menuFile->AppendSeparator();
 179       menuFile->Append(Minimal_Processor, "&Remove bold attribute", "", TRUE);
 180
 181       menuFile->AppendSeparator();
 182       menuFile->Append(Minimal_Quit, "&Close frame");
 183       menuNav->Append(Minimal_Back, "Go &BACK");
 184       menuNav->Append(Minimal_Forward, "Go &FORWARD");
 185
 186     // now append the freshly created menu to the menu bar...
 187       wxMenuBar *menuBar = new wxMenuBar;
 188       menuBar->Append(menuFile, "&File");
 189       menuBar->Append(menuNav, "&Navigate");
 190
 191     // ... and attach this menu bar to the frame
 192       SetMenuBar(menuBar);
 193
 194       CreateStatusBar(1);
 195
 196       m_Processor = new BoldProcessor;
 197       m_Processor->Enable(FALSE);
 198       m_Html = new wxHtmlWindow(this);
 199       m_Html->SetRelatedFrame(this, "HTML : %s");
 200       m_Html->SetRelatedStatusBar(0);
 201       m_Html->ReadCustomization(wxConfig::Get());
 202       m_Html->LoadPage("test.htm");
 203       m_Html->AddProcessor(m_Processor);
 204    }
 205
 206
 207 // event handlers
 208
 209 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 210 {
 211  // TRUE is to force the frame to close
 212  m_Html -> WriteCustomization(wxConfig::Get());
 213  delete wxConfig::Set(NULL);
 214  Close(TRUE);
 215 }
 216
 217 void MyFrame::OnPageOpen(wxCommandEvent& WXUNUSED(event))
 218 {
 219   wxString p = wxFileSelector(wxT("Open HTML document"), wxT(""), wxT(""), wxT(""), wxT("HTML files|*.htm"));
 220   if (p != wxEmptyString)
 221     m_Html -> LoadPage(p);
 222 }
 223
 224 void MyFrame::OnBack(wxCommandEvent& WXUNUSED(event))
 225 {
 226 if (!m_Html -> HistoryBack()) wxMessageBox("You reached prehistory era!");
 227 }
 228
 229 void MyFrame::OnForward(wxCommandEvent& WXUNUSED(event))
 230 {
 231 if (!m_Html -> HistoryForward()) wxMessageBox("No more items in history!");
 232 }
 233
 234 void MyFrame::OnProcessor(wxCommandEvent& WXUNUSED(event))
 235 {
 236     m_Processor->Enable(!m_Processor->IsEnabled());
 237     m_Html->LoadPage(m_Html->GetOpenedPage());
 238 }