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basicpholder.c

/*
 * ion/ioncore/basicpholder.c
 *
 * Copyright (c) Tuomo Valkonen 2005-2007. 
 *
 * Ion is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 */

#include <libtu/objp.h>
#include <libtu/obj.h>
#include <libtu/pointer.h>

#include "basicpholder.h"


/*{{{ Init/deinit */


static void basicpholder_watch_handler(Watch *watch, Obj *reg)
{
    WBasicPHolder *ph=FIELD_TO_STRUCT(WBasicPHolder, reg_watch, watch);
    pholder_redirect(&(ph->ph), (WRegion*)reg);
}


bool basicpholder_init(WBasicPHolder *ph, WRegion *reg, 
                       WBasicPHolderHandler *hnd)
{
    assert(reg!=NULL && hnd!=NULL);
    
    pholder_init(&(ph->ph));

    watch_init(&(ph->reg_watch));
    
    if(!watch_setup(&(ph->reg_watch), (Obj*)reg, basicpholder_watch_handler)){
        pholder_deinit(&(ph->ph));
        return FALSE;
    }
    
    ph->hnd=hnd;
    
    return TRUE;
}
 

WBasicPHolder *create_basicpholder(WRegion *reg, 
                                   WBasicPHolderHandler *hnd)
{
    CREATEOBJ_IMPL(WBasicPHolder, basicpholder, (p, reg, hnd));
}


void basicpholder_deinit(WBasicPHolder *ph)
{
    watch_reset(&(ph->reg_watch));
    pholder_deinit(&(ph->ph));
}


/*}}}*/


/*{{{ Dynfuns */


WRegion *basicpholder_do_attach(WBasicPHolder *ph, int flags,
                                WRegionAttachData *data)
{
    WRegion *reg=(WRegion*)ph->reg_watch.obj;

    if(reg==NULL || ph->hnd==NULL)
        return FALSE;

    return ph->hnd(reg, flags, data);
}


bool basicpholder_do_goto(WBasicPHolder *ph)
{
    WRegion *reg=(WRegion*)ph->reg_watch.obj;
    
    if(reg!=NULL)
        return region_goto((WRegion*)reg);
    
    return FALSE;
}


WRegion *basicpholder_do_target(WBasicPHolder *ph)
{
    return (WRegion*)ph->reg_watch.obj;
}


/*}}}*/


/*{{{ Class information */


static DynFunTab basicpholder_dynfuntab[]={
    {(DynFun*)pholder_do_attach, 
     (DynFun*)basicpholder_do_attach},

    {(DynFun*)pholder_do_goto, 
     (DynFun*)basicpholder_do_goto},

    {(DynFun*)pholder_do_target, 
     (DynFun*)basicpholder_do_target},
    
    END_DYNFUNTAB
};

IMPLCLASS(WBasicPHolder, WPHolder, basicpholder_deinit, 
          basicpholder_dynfuntab);


/*}}}*/


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