xmlres.cpp

linux下的电骡下载程序源码 包含emule协议的应用。

/////////////////////////////////////////////////////////////////////////////
// Name:        xmlres.cpp
// Purpose:     XRC resources
// Author:      Vaclav Slavik
// Created:     2000/03/05
// RCS-ID:      $Id: xmlres.cpp,v 1.2 2004/10/30 21:07:19 HopeSeekr Exp $
// Copyright:   (c) 2000 Vaclav Slavik
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "xmlres.h"
#endif

// For compilers that support precompilation, includes "wx.h".
#include <wx/wxprec.h>

#ifdef __BORLANDC__
    #pragma hdrstop
#endif


#include <wx/artprov.h>
#include <wx/bitmap.h>
#include <wx/dialog.h>
#include <wx/filename.h>
#include <wx/filesys.h>
#include <wx/fontenum.h>
#include <wx/fontmap.h>
#include <wx/frame.h>
#include <wx/image.h>
#include <wx/intl.h>
#include <wx/list.h>
#include <wx/listimpl.cpp>
#include <wx/log.h>
#include <wx/module.h>
#include <wx/panel.h>
#include <wx/tokenzr.h>
#include <wx/wfstream.h>

#include <wx/xrc/xml.h>
#include <wx/xrc/xmlres.h>

wxXmlResource *wxXmlResource::ms_instance = NULL;

/*static*/ wxXmlResource *wxXmlResource::Get()
{
    if ( !ms_instance )
        ms_instance = new wxXmlResource;
    return ms_instance;
}

/*static*/ wxXmlResource *wxXmlResource::Set(wxXmlResource *res)
{
    wxXmlResource *old = ms_instance;
    ms_instance = res;
    return old;
}

wxXmlResource::wxXmlResource()
{
    m_flags = wxXRC_USE_LOCALE;
    m_version = -1;
}

wxXmlResource::wxXmlResource(int flags)
{
    m_flags = flags;
    m_version = -1;
}

wxXmlResource::wxXmlResource(const wxString& filemask, int flags)
{
    m_flags = flags;
    m_version = -1;
    Load(filemask);
}

wxXmlResource::~wxXmlResource()
{
    ClearHandlers();
    
    std::list<wxXmlSubclassFactory *>::iterator it;
    for (it = ms_subclassFactories->begin(); it != ms_subclassFactories->end(); ++it)
    {
        delete *it;
    }
    ms_subclassFactories->clear();
    delete ms_subclassFactories;
}


bool wxXmlResource::Load(const wxString& filemask)
{
    wxString fnd;
    wxXmlResourceDataRecord *drec;
    bool iswild = wxIsWild(filemask);
    bool rt = TRUE;

#if wxUSE_FILESYSTEM
    wxFileSystem fsys;
#   define wxXmlFindFirst  fsys.FindFirst(filemask, wxFILE)
#   define wxXmlFindNext   fsys.FindNext()
#else
#   define wxXmlFindFirst  wxFindFirstFile(filemask, wxFILE)
#   define wxXmlFindNext   wxFindNextFile()
#endif
    if (iswild)
        fnd = wxXmlFindFirst;
    else
        fnd = filemask;
    while (!!fnd)
    {
        // NB: Load() accepts both filenames and URLs (should probably be
        //     changed to filenames only, but embedded resources currently
        //     rely on its ability to handle URLs - FIXME). This check
        //     serves as a quick way to determine whether found name is
        //     filename and not URL:
        if (wxFileName::FileExists(fnd))
        {
            // Make the name absolute filename, because the app may 
            // change working directory later:
            wxFileName fn(fnd);
            if (fn.IsRelative())
            {
                fn.Normalize(wxPATH_NORM_DOTS | wxPATH_NORM_ABSOLUTE);
                fnd = fn.GetFullPath();
            }
        }
        
#if wxUSE_FILESYSTEM
        if (fnd.Lower().Matches(wxT("*.zip")) ||
            fnd.Lower().Matches(wxT("*.xrs")))
        {
            wxString url(wxFileSystem::FileNameToURL(fnd));
            rt = rt && Load(url + wxT("#zip:*.xrc"));
        }
        else
#endif
        {            
            drec = new wxXmlResourceDataRecord;
            drec->File = fnd;
            m_data.push_back(drec);
        }

        if (iswild)
            fnd = wxXmlFindNext;
        else
            fnd = wxEmptyString;
    }
#   undef wxXmlFindFirst
#   undef wxXmlFindNext
    return rt;
}



void wxXmlResource::AddHandler(wxXmlResourceHandler* handler)
{
    m_handlers.push_back(handler);
    handler->SetParentResource(this);
}

void wxXmlResource::InsertHandler(wxXmlResourceHandler *handler)
{
    m_handlers.push_front(handler);
    handler->SetParentResource(this);
}



void wxXmlResource::ClearHandlers()
{
    // The equivalent of wxList::DeleteContents()
    std::list<wxXmlResourceHandler *>::iterator it;
    for (it = m_handlers.begin(); it != m_handlers.end(); ++it)
    {
        delete *it;
    }
    
    m_handlers.clear();
}


wxMenu *wxXmlResource::LoadMenu(const wxString& name)
{
    return (wxMenu*)CreateResFromNode(FindResource(name, wxT("wxMenu")), NULL, NULL);
}



wxMenuBar *wxXmlResource::LoadMenuBar(wxWindow *parent, const wxString& name)
{
    return (wxMenuBar*)CreateResFromNode(FindResource(name, wxT("wxMenuBar")), parent, NULL);
}



#if wxUSE_TOOLBAR
wxToolBar *wxXmlResource::LoadToolBar(wxWindow *parent, const wxString& name)
{
    return (wxToolBar*)CreateResFromNode(FindResource(name, wxT("wxToolBar")), parent, NULL);
}
#endif


wxDialog *wxXmlResource::LoadDialog(wxWindow *parent, const wxString& name)
{
    return (wxDialog*)CreateResFromNode(FindResource(name, wxT("wxDialog")), parent, NULL);
}

bool wxXmlResource::LoadDialog(wxDialog *dlg, wxWindow *parent, const wxString& name)
{
    return CreateResFromNode(FindResource(name, wxT("wxDialog")), parent, dlg) != NULL;
}



wxPanel *wxXmlResource::LoadPanel(wxWindow *parent, const wxString& name)
{
    return (wxPanel*)CreateResFromNode(FindResource(name, wxT("wxPanel")), parent, NULL);
}

bool wxXmlResource::LoadPanel(wxPanel *panel, wxWindow *parent, const wxString& name)
{
    return CreateResFromNode(FindResource(name, wxT("wxPanel")), parent, panel) != NULL;
}

wxFrame *wxXmlResource::LoadFrame(wxWindow* parent, const wxString& name)
{
    return (wxFrame*)CreateResFromNode(FindResource(name, wxT("wxFrame")), parent, NULL);
}

bool wxXmlResource::LoadFrame(wxFrame* frame, wxWindow *parent, const wxString& name)
{
    return CreateResFromNode(FindResource(name, wxT("wxFrame")), parent, frame) != NULL;
}

wxBitmap wxXmlResource::LoadBitmap(const wxString& name)
{
    wxBitmap *bmp = (wxBitmap*)CreateResFromNode(
                               FindResource(name, wxT("wxBitmap")), NULL, NULL);
    wxBitmap rt;

    if (bmp) { rt = *bmp; delete bmp; }
    return rt;
}

wxIcon wxXmlResource::LoadIcon(const wxString& name)
{
    wxIcon *icon = (wxIcon*)CreateResFromNode(
                            FindResource(name, wxT("wxIcon")), NULL, NULL);
    wxIcon rt;

    if (icon) { rt = *icon; delete icon; }
    return rt;
}


wxObject *wxXmlResource::LoadObject(wxWindow *parent, const wxString& name, const wxString& classname)
{
    return CreateResFromNode(FindResource(name, classname), parent, NULL);
}

bool wxXmlResource::LoadObject(wxObject *instance, wxWindow *parent, const wxString& name, const wxString& classname)
{
    return CreateResFromNode(FindResource(name, classname), parent, instance) != NULL;
}


bool wxXmlResource::AttachUnknownControl(const wxString& name,
                                         wxWindow *control, wxWindow *parent)
{
    if (parent == NULL)
        parent = control->GetParent();
    wxWindow *container = parent->FindWindow(name + wxT("_container"));
    if (!container)
    {
        wxLogError(_("Cannot find container for unknown control '%s'."), name.c_str());
        return FALSE;
    }
    return control->Reparent(container);
}


static void ProcessPlatformProperty(wxXmlNode *node)
{
    wxString s;
    bool isok;

    wxXmlNode *c = node->GetChildren();
    while (c)
    {
        isok = FALSE;
        if (!c->GetPropVal(wxT("platform"), &s))
            isok = TRUE;
        else
        {
            wxStringTokenizer tkn(s, wxT(" |"));

            while (tkn.HasMoreTokens())
            {
                s = tkn.GetNextToken();
                if (
#ifdef __WXMSW__
                    s == wxString(wxT("win"))
#elif defined(__UNIX__)
                    s == wxString(wxT("unix"))
#elif defined(__MAC__)
                    s == wxString(wxT("mac"))
#elif defined(__OS2__)
                    s == wxString(wxT("os2"))
#else
                    FALSE
#endif
              ) isok = TRUE;
            }
        }

        if (isok)
        {
            ProcessPlatformProperty(c);
            c = c->GetNext();
        }
        else
        {
            wxXmlNode *c2 = c->GetNext();
            node->RemoveChild(c);
            delete c;
            c = c2;
        }
    }
}



void wxXmlResource::UpdateResources()
{
    bool modif;
#   if wxUSE_FILESYSTEM
    wxFSFile *file = NULL;
    wxFileSystem fsys;
#   endif

    wxString encoding(wxT("UTF-8"));
#if !wxUSE_UNICODE && wxUSE_INTL
    if ( (GetFlags() & wxXRC_USE_LOCALE) == 0 )
    {
        // In case we are not using wxLocale to translate strings, convert the strings
        // GUI's charset. This must not be done when wxXRC_USE_LOCALE is on, because
        // it could break wxGetTranslation lookup.
        encoding = wxLocale::GetSystemEncodingName();
    }
#endif

    for (size_t i = 0; i < m_data.size(); i++)
    {
        modif = (m_data[i]->Doc == NULL);

        if (!modif)
        {
#           if wxUSE_FILESYSTEM
            file = fsys.OpenFile(m_data[i]->File);
            modif = file && file->GetModificationTime() > m_data[i]->Time;
            if (!file)
                wxLogError(_("Cannot open file '%s'."), m_data[i]->File.c_str());
            wxDELETE(file);
#           else
            modif = wxDateTime(wxFileModificationTime(m_data[i]->File)) > m_data[i]->Time;
#           endif
        }

        if (modif)
        {
            wxInputStream *stream = NULL;

#           if wxUSE_FILESYSTEM
            file = fsys.OpenFile(m_data[i]->File);
			if (file)
				stream = file->GetStream();
#           else
            stream = new wxFileInputStream(m_data[i]->File);
#           endif

            if (stream)
            {
                delete m_data[i]->Doc;
                m_data[i]->Doc = new wxXmlDocument;
            }
            if (!stream || !m_data[i]->Doc->Load(*stream, encoding))
            {
                wxLogError(_("Cannot load resources from file '%s'."),
                           m_data[i]->File.c_str());
                wxDELETE(m_data[i]->Doc);
            }
            else if (m_data[i]->Doc->GetRoot()->GetName() != wxT("resource"))
            {
                wxLogError(_("Invalid XRC resource '%s': doesn't have root node 'resource'."), m_data[i]->File.c_str());
                wxDELETE(m_data[i]->Doc);
            }
            else
			{
                long version;
                int v1, v2, v3, v4;
                wxString verstr = m_data[i]->Doc->GetRoot()->GetPropVal(
                                      wxT("version"), wxT("0.0.0.0"));
                if (wxSscanf(verstr.c_str(), wxT("%i.%i.%i.%i"),
                    &v1, &v2, &v3, &v4) == 4)
                    version = v1*256*256*256+v2*256*256+v3*256+v4;
                else
                    version = 0;
                if (m_version == -1)
                    m_version = version;
                if (m_version != version)
                    wxLogError(_("Resource files must have same version number!"));

                ProcessPlatformProperty(m_data[i]->Doc->GetRoot());
				m_data[i]->Time = file->GetModificationTime();
			}

#           if wxUSE_FILESYSTEM
				wxDELETE(file);
#           else
				wxDELETE(stream);
#           endif
        }
    }
}


wxXmlNode *wxXmlResource::DoFindResource(wxXmlNode *parent,
                                         const wxString& name,
                                         const wxString& classname,
                                         bool recursive)
{
    wxString dummy;