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test.cpp
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C/C++ Source or Header
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2002-09-01
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8KB
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238 lines
/////////////////////////////////////////////////////////////////////////////
// Name: test.cpp
// Purpose: wxHtml testing example
/////////////////////////////////////////////////////////////////////////////
#if defined(__GNUG__) && !defined(__APPLE__)
#pragma implementation "test.cpp"
#pragma interface "test.cpp"
#endif
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
// for all others, include the necessary headers (this file is usually all you
// need because it includes almost all "standard" wxWindows headers
#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif
#include "wx/image.h"
#include "wx/sysopt.h"
#include "wx/html/htmlwin.h"
#include "wx/html/htmlproc.h"
#include "wx/fs_inet.h"
#include "wx/filedlg.h"
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
// Define a new application type, each program should derive a class from wxApp
class MyApp : public wxApp
{
public:
// override base class virtuals
// ----------------------------
// this one is called on application startup and is a good place for the app
// initialization (doing it here and not in the ctor allows to have an error
// return: if OnInit() returns false, the application terminates)
virtual bool OnInit();
};
// Define a new frame type: this is going to be our main frame
class MyFrame : public wxFrame
{
public:
// ctor(s)
MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
// event handlers (these functions should _not_ be virtual)
void OnQuit(wxCommandEvent& event);
void OnPageOpen(wxCommandEvent& event);
void OnBack(wxCommandEvent& event);
void OnForward(wxCommandEvent& event);
void OnProcessor(wxCommandEvent& event);
private:
wxHtmlWindow *m_Html;
wxHtmlProcessor *m_Processor;
// any class wishing to process wxWindows events must use this macro
DECLARE_EVENT_TABLE()
};
class BoldProcessor : public wxHtmlProcessor
{
public:
virtual wxString Process(const wxString& s) const
{
wxString r(s);
r.Replace(wxT("<b>"), wxEmptyString);
r.Replace(wxT("<B>"), wxEmptyString);
r.Replace(wxT("</b>"), wxEmptyString);
r.Replace(wxT("</B>"), wxEmptyString);
return r;
}
};
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// IDs for the controls and the menu commands
enum
{
// menu items
Minimal_Quit = 1,
Minimal_PageOpen,
Minimal_Back,
Minimal_Forward,
Minimal_Processor,
// controls start here (the numbers are, of course, arbitrary)
Minimal_Text = 1000
};
// ----------------------------------------------------------------------------
// event tables and other macros for wxWindows
// ----------------------------------------------------------------------------
// the event tables connect the wxWindows events with the functions (event
// handlers) which process them. It can be also done at run-time, but for the
// simple menu events like this the static method is much simpler.
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(Minimal_Quit, MyFrame::OnQuit)
EVT_MENU(Minimal_PageOpen, MyFrame::OnPageOpen)
EVT_MENU(Minimal_Back, MyFrame::OnBack)
EVT_MENU(Minimal_Forward, MyFrame::OnForward)
EVT_MENU(Minimal_Processor, MyFrame::OnProcessor)
END_EVENT_TABLE()
// Create a new application object: this macro will allow wxWindows to create
// the application object during program execution (it's better than using a
// static object for many reasons) and also declares the accessor function
// wxGetApp() which will return the reference of the right type (i.e. MyApp and
// not wxApp)
IMPLEMENT_APP(MyApp)
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// the application class
// ----------------------------------------------------------------------------
// `Main program' equivalent: the program execution "starts" here
bool MyApp::OnInit()
{
#if wxUSE_SYSTEM_OPTIONS
wxSystemOptions::SetOption(wxT("no-maskblt"), 1);
#endif
wxInitAllImageHandlers();
#if wxUSE_FS_INET && wxUSE_STREAMS && wxUSE_SOCKETS
wxFileSystem::AddHandler(new wxInternetFSHandler);
#endif
SetVendorName("wxWindows");
SetAppName("wxHtmlTest");
// the following call to wxConfig::Get will use it to create an object...
// Create the main application window
MyFrame *frame = new MyFrame("wxHtmlWindow testing application",
wxPoint(50, 50), wxSize(640, 480));
// Show it and tell the application that it's our main window
// @@@ what does it do exactly, in fact? is it necessary here?
frame->Show(TRUE);
SetTopWindow(frame);
// success: wxApp::OnRun() will be called which will enter the main message
// loop and the application will run. If we returned FALSE here, the
// application would exit immediately.
return TRUE;
}
// ----------------------------------------------------------------------------
// main frame
// ----------------------------------------------------------------------------
// frame constructor
MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
: wxFrame((wxFrame *)NULL, -1, title, pos, size, wxDEFAULT_FRAME_STYLE, "html_test_app")
{
// create a menu bar
wxMenu *menuFile = new wxMenu;
wxMenu *menuNav = new wxMenu;
menuFile->Append(Minimal_PageOpen, "&Open HTML page...");
menuFile->AppendSeparator();
menuFile->Append(Minimal_Processor, "&Remove bold attribute", "", TRUE);
menuFile->AppendSeparator();
menuFile->Append(Minimal_Quit, "&Close frame");
menuNav->Append(Minimal_Back, "Go &BACK");
menuNav->Append(Minimal_Forward, "Go &FORWARD");
// now append the freshly created menu to the menu bar...
wxMenuBar *menuBar = new wxMenuBar;
menuBar->Append(menuFile, "&File");
menuBar->Append(menuNav, "&Navigate");
// ... and attach this menu bar to the frame
SetMenuBar(menuBar);
CreateStatusBar(1);
m_Processor = new BoldProcessor;
m_Processor->Enable(FALSE);
m_Html = new wxHtmlWindow(this);
m_Html->SetRelatedFrame(this, "HTML : %s");
m_Html->SetRelatedStatusBar(0);
m_Html->ReadCustomization(wxConfig::Get());
m_Html->LoadPage("test.htm");
m_Html->AddProcessor(m_Processor);
}
// event handlers
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
// TRUE is to force the frame to close
m_Html -> WriteCustomization(wxConfig::Get());
delete wxConfig::Set(NULL);
Close(TRUE);
}
void MyFrame::OnPageOpen(wxCommandEvent& WXUNUSED(event))
{
wxString p = wxFileSelector(wxT("Open HTML document"), wxT(""), wxT(""), wxT(""), wxT("HTML files|*.htm"));
if (p != wxEmptyString)
m_Html -> LoadPage(p);
}
void MyFrame::OnBack(wxCommandEvent& WXUNUSED(event))
{
if (!m_Html -> HistoryBack()) wxMessageBox("You reached prehistory era!");
}
void MyFrame::OnForward(wxCommandEvent& WXUNUSED(event))
{
if (!m_Html -> HistoryForward()) wxMessageBox("No more items in history!");
}
void MyFrame::OnProcessor(wxCommandEvent& WXUNUSED(event))
{
m_Processor->Enable(!m_Processor->IsEnabled());
m_Html->LoadPage(m_Html->GetOpenedPage());
}