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