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/**
* @file geis_grail_token.c
* @brief GEIS filter token for the grail-based back end
*/
/*
* Copyright 2011-2012 Canonical Ltd.
*
* This library is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3
* as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "geis_config.h"
#include "geis_grail_token.h"
#include "geis_backend_token.h"
#include "geis_grail_backend.h"
#include "geis_logging.h"
#include <string.h>
#include <X11/Xlib.h>
/* The maximum nuimber of devices supported. */
#define MAX_NUM_DEVICES 10
/* The maximum nuimber of regions supported. */
#define MAX_NUM_WINDOWS 10
struct GeisGrailToken
{
struct GeisBackendToken base;
GeisGrailBackend be;
int device_count;
int devices[MAX_NUM_DEVICES];
int window_count;
Window windows[MAX_NUM_WINDOWS];
};
/**
* Converts from a GeisBackendToken to an XcbBackendToken.
*/
static inline GeisGrailToken
_geis_grail_token_from_geis_token(GeisBackendToken gbt)
{
return (GeisGrailToken)gbt;
}
/**
* Allocates memory for a token from a pool.
*/
static GeisGrailToken
_geis_grail_token_allocate(void)
{
return calloc(1, sizeof(struct GeisGrailToken));
}
/**
* Returns memory for a token to a pool.
*/
static void
_geis_grail_token_deallocate(GeisGrailToken gdt)
{
free(gdt);
}
/**
* Deep-copy-constructs a token.
*/
static GeisBackendToken
_geis_grail_token_clone(GeisBackendToken original)
{
GeisGrailToken new_token = calloc(1, sizeof(struct GeisGrailToken));
memcpy(new_token,
_geis_grail_token_from_geis_token(original),
sizeof(struct GeisGrailToken));
return (GeisBackendToken)new_token;
}
/**
* Composes one token onto another.
*
* @param[in,out] lhs
* @param[in] rhs
*/
static void
_geis_grail_token_compose(GeisBackendToken lhs GEIS_UNUSED,
GeisBackendToken rhs GEIS_UNUSED)
{
}
/**
* Activates a Grail back end token.
*
* @param[in] token A %GeisGrailToken.
* @param[in] subscription The subscrition the token will be activated on.
*/
static GeisStatus
_geis_grail_token_activate(GeisBackendToken token, GeisSubscription sub)
{
GeisGrailToken gdt = _geis_grail_token_from_geis_token(token);
GeisStatus status = geis_grail_backend_activate_subscription(gdt->be, sub);
return status;
}
/**
* Deactivates a Grail back end token.
*
* @param[in] token A %GeisGrailToken.
*/
static GeisStatus
_geis_grail_token_deactivate(GeisBackendToken token, GeisSubscription sub)
{
GeisGrailToken gdt = _geis_grail_token_from_geis_token(token);
GeisStatus status = geis_grail_backend_deactivate_subscription(gdt->be, sub);
return status;
}
/**
* Frees the memory allocated for the GEIS subscription private data
*/
static void
_geis_grail_token_free_subscription_pdata(GeisBackendToken token, GeisSubscription sub)
{
GeisGrailToken gdt = _geis_grail_token_from_geis_token(token);
geis_grail_backend_free_subscription_pdata(gdt->be, sub);
}
/**
* Creates Grail-back-end-specific back end token.
*/
GeisBackendToken
geis_grail_token_new(GeisBackend be,
GeisBackendTokenInitState init_state GEIS_UNUSED)
{
static struct GeisBackendTokenVtable _token_vtbl = {
_geis_grail_token_clone,
geis_grail_token_delete,
_geis_grail_token_compose,
_geis_grail_token_activate,
_geis_grail_token_deactivate,
_geis_grail_token_free_subscription_pdata
};
GeisGrailToken token = _geis_grail_token_allocate();
if (token)
{
token->base.vtbl = &_token_vtbl;
token->be = (GeisGrailBackend)be;
}
return (GeisBackendToken)token;
}
/**
* Releases resources for a token.
*
* @param[in] token A %GeisGrailToken.
*/
void
geis_grail_token_delete(GeisBackendToken token)
{
GeisGrailToken gdt = _geis_grail_token_from_geis_token(token);
_geis_grail_token_deallocate(gdt);
}
GeisStatus
geis_grail_token_add_class_term(GeisBackendToken gbtoken GEIS_UNUSED,
void *context GEIS_UNUSED,
GeisString name GEIS_UNUSED,
GeisFilterOperation op GEIS_UNUSED,
void *value GEIS_UNUSED)
{
GeisStatus status = GEIS_STATUS_UNKNOWN_ERROR;
return status;
}
GeisStatus
geis_grail_token_add_device_term(GeisBackendToken gbtoken GEIS_UNUSED,
void *context GEIS_UNUSED,
GeisString name GEIS_UNUSED,
GeisFilterOperation op GEIS_UNUSED,
void *value GEIS_UNUSED)
{
GeisStatus status = GEIS_STATUS_UNKNOWN_ERROR;
return status;
}
GeisStatus
geis_grail_token_add_feature_term(GeisBackendToken gbtoken GEIS_UNUSED,
void *context GEIS_UNUSED,
GeisString name GEIS_UNUSED,
GeisFilterOperation op GEIS_UNUSED,
void *value GEIS_UNUSED)
{
GeisStatus status = GEIS_STATUS_UNKNOWN_ERROR;
return status;
}
GeisStatus
geis_grail_token_add_region_term(GeisBackendToken gbtoken,
void *context GEIS_UNUSED,
GeisString name,
GeisFilterOperation op,
void *value)
{
GeisStatus status = GEIS_STATUS_UNKNOWN_ERROR;
GeisGrailToken token = _geis_grail_token_from_geis_token(gbtoken);
if (0 == strcmp(name, GEIS_REGION_ATTRIBUTE_WINDOWID)
&& op == GEIS_FILTER_OP_EQ)
{
Window window = (Window)*(GeisInteger*)value;
geis_debug("attr name=\"%s\" windowid=0x%x", name, (unsigned int)window);
token->windows[token->window_count++] = window;
status = GEIS_STATUS_SUCCESS;
}
return status;
}
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