libmmanager/mm-filter-param.h

   1 /* MManager - a Desktop wide manager for multimedia applications.
   2  *
   3  * Copyright (C) 2008 Cosimo Cecchi <cosimoc@gnome.org>
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 #ifndef __MM_FILTER_PARAM_H__
  22 #define __MM_FILTER_PARAM_H__
  23
  24 #include <glib.h>
  25 #include "mm-types.h"
  26 #include "mm-attribute.h"
  27
  28 #define MM_TYPE_FILTER_PARAM            (mm_filter_param_get_type())
  29 #define MM_FILTER_PARAM(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj),\
  30                                          MM_TYPE_FILTER_PARAM, MMFilterParam))
  31 #define MM_FILTER_PARAM_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),\
  32                                          MM_TYPE_FILTER_PARAM, MMFilterParamClass))
  33 #define MM_IS_FILTER_PARAM(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj),\
  34                                          MM_TYPE_FILTER_PARAM))
  35 #define MM_IS_FILTER_PARAM_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((obj),\
  36                                          MM_TYPE_FILTER_PARAM))
  37 #define MM_FILTER_PARAM_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj),\
  38                                          MM_TYPE_FILTER_PARAM, MMFilterParamClass))
  39
  40 /**
  41  * SECTION:mm-filter-param
  42  * @short_description: parameter for a #MMFilter.
  43  *
  44  * #MMFilterParam is an object identifying a parameter for a #MMFilter.
  45  * Thus to make a query, you have to build #MMFilterParam objects and add them
  46  * to a #MMFilter. To create a #MMFilterParam object, you should provide a
  47  * #MMAttribute, a #GValue and a #MMComparisionOperator which specifies the
  48  * relation between them. #MMFilterParam objects are reusable, i.e. you can add
  49  * the same #MMFilterParam to more than a filter.
  50  */
  51
  52 /**
  53  * MMFilterParam:
  54  *
  55  * A parameter for a #MMFilter.
  56  */
  57
  58 typedef struct _MMFilterParam        MMFilterParam;
  59 typedef struct _MMFilterParamDetails MMFilterParamDetails;
  60 typedef struct _MMFilterParamClass   MMFilterParamClass;
  61
  62 struct _MMFilterParam {
  63   GObject parent;
  64
  65   MMFilterParamDetails *details;
  66 };
  67
  68 struct _MMFilterParamClass {
  69   GObjectClass parent_class;
  70 };
  71
  72 /* public methods */
  73
  74 GType                 mm_filter_param_get_type        (void);
  75
  76 MMFilterParam *       mm_filter_param_new             (MMAttribute          *attribute,
  77                                                        GValue               *value,
  78                                                        MMComparisionOperator op);
  79 void                  mm_filter_param_set_attribute   (MMFilterParam        *filter_param,
  80                                                        MMAttribute          *attribute);
  81 void                  mm_filter_param_set_comparision (MMFilterParam        *filter_param,
  82                                                        MMComparisionOperator op);
  83 void                  mm_filter_param_set_value       (MMFilterParam        *filter_param,
  84                                                        GValue               *value);
  85 GValue *              mm_filter_param_get_value       (MMFilterParam        *filter_param);
  86 MMAttribute *         mm_filter_param_get_attribute   (MMFilterParam        *filter_param);
  87 MMComparisionOperator mm_filter_param_get_operator    (MMFilterParam        *filter_param);
  88 void                  mm_filter_param_clear           (MMFilterParam        *filter_param);
  89
  90 #endif /* __MM_FILTER_PARAM_H__ */