xmlres.cpp

linux下的电骡下载程序源码 包含emule协议的应用。

    wxXmlNode *node;

    // first search for match at the top-level nodes (as this is
    // where the resource is most commonly looked for):
    for (node = parent->GetChildren(); node; node = node->GetNext())
    {
        if ( node->GetType() == wxXML_ELEMENT_NODE &&
                 (node->GetName() == wxT("object") ||
                  node->GetName() == wxT("object_ref")) &&
             node->GetPropVal(wxT("name"), &dummy) && dummy == name )
        {
            wxString cls(node->GetPropVal(wxT("class"), wxEmptyString));
            if (!classname || cls == classname)
                return node;
            // object_ref may not have 'class' property:
            if (cls.empty() && node->GetName() == wxT("object_ref"))
            {
                wxString refName = node->GetPropVal(wxT("ref"), wxEmptyString);
                if (refName.empty())
                    continue;
                wxXmlNode* refNode = FindResource(refName, wxEmptyString, TRUE);
                if (refNode &&
                    refNode->GetPropVal(wxT("class"), wxEmptyString) == classname)
                {
                    return node;
                }
            }
        }
    }

    if ( recursive )
        for (node = parent->GetChildren(); node; node = node->GetNext())
        {
            if ( node->GetType() == wxXML_ELEMENT_NODE &&
                 (node->GetName() == wxT("object") ||
                  node->GetName() == wxT("object_ref")) )
            {
                wxXmlNode* found = DoFindResource(node, name, classname, TRUE);
                if ( found )
                    return found;
            }
        }

   return NULL;
}

wxXmlNode *wxXmlResource::FindResource(const wxString& name,
                                       const wxString& classname,
                                       bool recursive)
{
    UpdateResources(); //ensure everything is up-to-date

    wxString dummy;
    for (size_t f = 0; f < m_data.size(); f++)
    {
        if ( m_data[f]->Doc == NULL || m_data[f]->Doc->GetRoot() == NULL )
            continue;

        wxXmlNode* found = DoFindResource(m_data[f]->Doc->GetRoot(),
                                          name, classname, recursive);
        if ( found )
        {
#if wxUSE_FILESYSTEM
            m_curFileSystem.ChangePathTo(m_data[f]->File);
#endif
            return found;
        }
    }

    wxLogError(_("XRC resource '%s' (class '%s') not found!"),
               name.c_str(), classname.c_str());
    return NULL;
}

static void MergeNodes(wxXmlNode& dest, wxXmlNode& with)
{
    // Merge properties:
    for (wxXmlProperty *prop = with.GetProperties(); prop; prop = prop->GetNext())
    {
        wxXmlProperty *dprop;
        for (dprop = dest.GetProperties(); dprop; dprop = dprop->GetNext())
        {

            if ( dprop->GetName() == prop->GetName() )
            {
                dprop->SetValue(prop->GetValue());
                break;
            }
        }

        if ( !dprop )
            dest.AddProperty(prop->GetName(), prop->GetValue());
   }

    // Merge child nodes:
    for (wxXmlNode* node = with.GetChildren(); node; node = node->GetNext())
    {
        wxString name = node->GetPropVal(wxT("name"), wxEmptyString);
        wxXmlNode *dnode;

        for (dnode = dest.GetChildren(); dnode; dnode = dnode->GetNext() )
        {
            if ( dnode->GetName() == node->GetName() &&
                 dnode->GetPropVal(wxT("name"), wxEmptyString) == name &&
                 dnode->GetType() == node->GetType() )
            {
                MergeNodes(*dnode, *node);
                break;
            }
        }

        if ( !dnode )
            dest.AddChild(new wxXmlNode(*node));
    }

    if ( dest.GetType() == wxXML_TEXT_NODE && with.GetContent().Length() )
         dest.SetContent(with.GetContent());
}

wxObject *wxXmlResource::CreateResFromNode(wxXmlNode *node, wxObject *parent,
                                           wxObject *instance)
{
    return CreateResFromNode2(node, parent, instance);
}

wxObject *wxXmlResource::CreateResFromNode2(wxXmlNode *node, wxObject *parent,
                                            wxObject *instance,
                                            wxXmlResourceHandler *handlerToUse)
{
    if (node == NULL) return NULL;

    // handling of referenced resource
    if ( node->GetName() == wxT("object_ref") )
    {
        wxString refName = node->GetPropVal(wxT("ref"), wxEmptyString);
        wxXmlNode* refNode = FindResource(refName, wxEmptyString, TRUE);

        if ( !refNode )
        {
            wxLogError(_("Referenced object node with ref=\"%s\" not found!"),
                       refName.c_str());
            return NULL;
        }

        wxXmlNode copy(*refNode);
        MergeNodes(copy, *node);

        return CreateResFromNode(&copy, parent, instance);
    }

    wxXmlResourceHandler* handler;

    if (handlerToUse)
    {        
        if (handlerToUse->CanHandle(node))
        {
            return handlerToUse->CreateResource(node, parent, instance);
        }
    }
    else if (node->GetName() == wxT("object"))
    {    
        std::list<wxXmlResourceHandler *>::const_iterator it;
        for (it = m_handlers.begin(); it != m_handlers.end(); ++it)
        {
            handler = *it;
            if (handler->CanHandle(node))
            {
                return handler->CreateResource(node, parent, instance);
            }
        }
    }

    wxLogError(_("No handler found for XML node '%s', class '%s'!"),
               node->GetName().c_str(),
               node->GetPropVal(wxT("class"), wxEmptyString).c_str());
    return NULL;
}

wxXmlSubclassFactoriesList *wxXmlResource::ms_subclassFactories = NULL;

/*static*/ void wxXmlResource::AddSubclassFactory(wxXmlSubclassFactory *factory)
{
    if (!ms_subclassFactories)
    {
        ms_subclassFactories = new wxXmlSubclassFactoriesList;
//        ms_subclassFactories->DeleteContents(TRUE);
    }
    ms_subclassFactories->push_back(factory);
}

class wxXmlSubclassFactoryCXX : public wxXmlSubclassFactory
{
public:
    ~wxXmlSubclassFactoryCXX() {}

    wxObject *Create(const wxString& className)
    {
        wxClassInfo* classInfo = wxClassInfo::FindClass(className);

        if (classInfo)
            return classInfo->CreateObject();
        else
            return NULL;
    }
};

wxXmlResourceHandler::wxXmlResourceHandler()
        : m_node(NULL), m_parent(NULL), m_instance(NULL),
          m_parentAsWindow(NULL), m_instanceAsWindow(NULL)
{}

wxXmlResourceHandler::~wxXmlResourceHandler()
{
}

wxObject *wxXmlResourceHandler::CreateResource(wxXmlNode *node, wxObject *parent, wxObject *instance)
{
    wxXmlNode *myNode = m_node;
    wxString myClass = m_class;
    wxObject *myParent = m_parent, *myInstance = m_instance;
    wxWindow *myParentAW = m_parentAsWindow, *myInstanceAW = m_instanceAsWindow;

    m_instance = instance;
    if (!m_instance && node->HasProp(wxT("subclass")) &&
        !(m_resource->GetFlags() & wxXRC_NO_SUBCLASSING))
    {
        wxString subclass = node->GetPropVal(wxT("subclass"), wxEmptyString);
        if (!subclass.empty())
        {
            std::list<wxXmlSubclassFactory *>::iterator it;
            for (it = wxXmlResource::ms_subclassFactories->begin(); it != wxXmlResource::ms_subclassFactories->end(); ++it)
            {
                m_instance = (*it)->Create(subclass);
                if (m_instance)
                {
                    break;
                }
            }

            if (!m_instance)
            {
                wxString name = node->GetPropVal(wxT("name"), wxEmptyString);
                wxLogError(_("Subclass '%s' not found for resource '%s', not subclassing!"),
                           subclass.c_str(), name.c_str());
            }
        }
    }

    m_node = node;
    m_class = node->GetPropVal(wxT("class"), wxEmptyString);
    m_parent = parent;
    m_parentAsWindow = wxDynamicCast(m_parent, wxWindow);
    m_instanceAsWindow = wxDynamicCast(m_instance, wxWindow);

    wxObject *returned = DoCreateResource();

    m_node = myNode;
    m_class = myClass;
    m_parent = myParent; m_parentAsWindow = myParentAW;
    m_instance = myInstance; m_instanceAsWindow = myInstanceAW;

    return returned;
}


void wxXmlResourceHandler::AddStyle(const wxString& name, int value)
{
    m_styleNames.Add(name);
    m_styleValues.Add(value);
}



void wxXmlResourceHandler::AddWindowStyles()
{
    XRC_ADD_STYLE(wxSIMPLE_BORDER);
    XRC_ADD_STYLE(wxSUNKEN_BORDER);
    XRC_ADD_STYLE(wxDOUBLE_BORDER);
    XRC_ADD_STYLE(wxRAISED_BORDER);
    XRC_ADD_STYLE(wxSTATIC_BORDER);
    XRC_ADD_STYLE(wxNO_BORDER);
    XRC_ADD_STYLE(wxTRANSPARENT_WINDOW);
    XRC_ADD_STYLE(wxWANTS_CHARS);
    XRC_ADD_STYLE(wxNO_FULL_REPAINT_ON_RESIZE);
}



bool wxXmlResourceHandler::HasParam(const wxString& param)
{
    return (GetParamNode(param) != NULL);
}


int wxXmlResourceHandler::GetStyle(const wxString& param, int defaults)
{
    wxString s = GetParamValue(param);

    if (!s) return defaults;

    wxStringTokenizer tkn(s, wxT("| \t\n"), wxTOKEN_STRTOK);
    int style = 0;
    int index;
    wxString fl;
    while (tkn.HasMoreTokens())
    {
        fl = tkn.GetNextToken();
        index = m_styleNames.Index(fl);
        if (index != wxNOT_FOUND)
            style |= m_styleValues[index];
        else
            wxLogError(_("Unknown style flag ") + fl);
    }
    return style;
}



wxString wxXmlResourceHandler::GetText(const wxString& param, bool translate)
{
    wxString str1(GetParamValue(param));
    wxString str2;
    const wxChar *dt;
    wxChar amp_char;

    // VS: First version of XRC resources used $ instead of & (which is
    //     illegal in XML), but later I realized that '_' fits this purpose
    //     much better (because &File means "File with F underlined").
    if (m_resource->CompareVersion(2,3,0,1) < 0)
        amp_char = wxT('$');
    else
        amp_char = wxT('_');

    for (dt = str1.c_str(); *dt; dt++)
    {
        // Remap amp_char to &, map double amp_char to amp_char (for things
        // like "&File..." -- this is illegal in XML, so we use "_File..."):
        if (*dt == amp_char)
        {
            if ( *(++dt) == amp_char )
                str2 << amp_char;
            else
                str2 << wxT('&') << *dt;
        }
        // Remap \n to CR, \r to LF, \t to TAB:
        else if (*dt == wxT('\\'))
            switch (*(++dt))
            {
                case wxT('n') : str2 << wxT('\n'); break;
                case wxT('t') : str2 << wxT('\t'); break;
                case wxT('r') : str2 << wxT('\r'); break;
                default       : str2 << wxT('\\') << *dt; break;
            }
        else str2 << *dt;
    }

    if (translate && m_resource->GetFlags() & wxXRC_USE_LOCALE)
        return wxGetTranslation(str2);
    else
        return str2;

}



long wxXmlResourceHandler::GetLong(const wxString& param, long defaultv)
{
    long value;
    wxString str1 = GetParamValue(param);

    if (!str1.ToLong(&value))
        value = defaultv;

    return value;
}



int wxXmlResourceHandler::GetID()
{
    return wxXmlResource::GetXRCID(GetName());
}



wxString wxXmlResourceHandler::GetName()
{
    return m_node->GetPropVal(wxT("name"), wxT("-1"));
}



bool wxXmlResourceHandler::GetBool(const wxString& param, bool defaultv)
{
    wxString v = GetParamValue(param);
    v.MakeLower();
    if (!v) return defaultv;
    else return (v == wxT("1"));
}



wxColour wxXmlResourceHandler::GetColour(const wxString& param)
{
    wxString v = GetParamValue(param);
    unsigned long tmp = 0;

    if (v.Length() != 7 || v[0u] != wxT('#') ||
        wxSscanf(v.c_str(), wxT("#%lX"), &tmp) != 1)
    {
        wxLogError(_("XRC resource: Incorrect colour specification '%s' for property '%s'."),
                   v.c_str(), param.c_str());
        return wxNullColour;
    }

    return wxColour((unsigned char) ((tmp & 0xFF0000) >> 16) ,
                    (unsigned char) ((tmp & 0x00FF00) >> 8),
                    (unsigned char) ((tmp & 0x0000FF)));
}



wxBitmap wxXmlResourceHandler::GetBitmap(const wxString& param,
                                         const wxArtClient& defaultArtClient,
                                         wxSize size)
{
    /* If the bitmap is specified as stock item, query wxArtProvider for it: */
    wxXmlNode *bmpNode = GetParamNode(param);
    if ( bmpNode )
    {
        wxString sid = bmpNode->GetPropVal(wxT("stock_id"), wxEmptyString);
        if ( !sid.empty() )
        {
            wxString scl = bmpNode->GetPropVal(wxT("stock_client"), defaultArtClient);
            wxBitmap stockArt =
                wxArtProvider::GetBitmap(wxART_MAKE_ART_ID_FROM_STR(sid),