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