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kwin'PluginMgr (./kdebase/kwin/plugins.h:19)

class PluginMgr : public QObject
{
    Q_OBJECT
public:
    PluginMgr();
    ~PluginMgr();
    Client *allocateClient(Workspace *ws, WId w);
    void loadPlugin(QString name);
signals:
    void resetAllClients();
protected:
    Client* (*alloc_ptr)(Workspace *ws, WId w);
    lt_dlhandle handle;
};

kwin'PluginMgr::PluginMgr() (./kdebase/kwin/plugins.cpp:94)

PluginMgr::PluginMgr()
    : QObject()
{
    alloc_ptr = NULL;
    handle = 0;

    QString pluginStr;
    KConfig *config = KGlobal::config();
    config->setGroup("Style");
    pluginStr = config->readEntry("PluginLib", "standard");
    if(pluginStr.isEmpty() || pluginStr == "standard")
        return;
    else
        loadPlugin(pluginStr);
}

kwin'PluginMgr::~PluginMgr() (./kdebase/kwin/plugins.cpp:110)

PluginMgr::~PluginMgr()
{
    if(handle)
        lt_dlclose(handle);
}

kwin'PluginMgr::allocateClient() (./kdebase/kwin/plugins.cpp:116)

Client* PluginMgr::allocateClient(Workspace *ws, WId w)
{
    if(alloc_ptr)
        return(alloc_ptr(ws, w));
    else
        return(new StdClient(ws, w));
}

kwin'PluginMgr::loadPlugin() (./kdebase/kwin/plugins.cpp:124)

void PluginMgr::loadPlugin(QString nameStr)
{
    static bool dlregistered = false;
    static lt_dlhandle oldHandle = 0;

    KConfig *config = KGlobal::config();
    config->setGroup("Style");
    config->writeEntry("PluginLib", nameStr);
    oldHandle = handle;

    if(nameStr.isNull()){
        handle = 0;
        alloc_ptr = NULL;
        config->writeEntry("PluginLib", "standard");
    }
    else{
        if(!dlregistered){
            dlregistered = true;
            lt_dlinit();
        }
        nameStr += ".la";
        nameStr = KGlobal::dirs()->findResource("lib", nameStr);

        if(!nameStr){
            warning("KWin: cannot find client plugin.");
            handle = 0;
            alloc_ptr = NULL;
            config->writeEntry("PluginLib", "standard");
        }
        else{
            handle = lt_dlopen(nameStr.latin1());
            if(!handle){
                warning("KWin: cannot load client plugin %s.", nameStr.latin1());
                handle = 0;
                alloc_ptr = NULL;
                config->writeEntry("PluginLib", "standard");
            }
            else{
                lt_ptr_t alloc_func = lt_dlsym(handle, "allocate");
                if(alloc_func)
                    alloc_ptr = (Client* (*)(Workspace *ws, WId w))alloc_func;
                else{
                    warning("KWin: %s is not a KWin plugin.", nameStr.latin1());
                    lt_dlclose(handle);
                    handle = 0;
                    alloc_ptr = NULL;
                    config->writeEntry("PluginLib", "standard");
                }
            }
        }
    }
    config->sync();
    emit resetAllClients();
    if(oldHandle)
        lt_dlclose(oldHandle);
}