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