src/ui/gui/psppire-selector.h

   1 /* PSPPIRE - a graphical user interface for PSPP.
   2    Copyright (C) 2007  Free Software Foundation
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
  16
  17
  18 #ifndef __PSPPIRE_SELECTOR_H__
  19 #define __PSPPIRE_SELECTOR_H__
  20
  21
  22 #include <glib.h>
  23 #include <glib-object.h>
  24 #include <gtk/gtkbutton.h>
  25 #include <gtk/gtkaction.h>
  26 #include <gtk/gtkarrow.h>
  27 #include <gtk/gtktreemodel.h>
  28 #include <gtk/gtktreemodelfilter.h>
  29
  30 G_BEGIN_DECLS
  31
  32 #define PSPPIRE_SELECTOR_TYPE            (psppire_selector_get_type ())
  33 #define PSPPIRE_SELECTOR(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), PSPPIRE_SELECTOR_TYPE, PsppireSelector))
  34 #define PSPPIRE_SELECTOR_CLASS(class)    (G_TYPE_CHECK_CLASS_CAST ((class), \
  35     PSPPIRE_SELECTOR_TYPE, PsppireSelectorClass))
  36 #define PSPPIRE_IS_SELECTOR(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
  37     PSPPIRE_SELECTOR_TYPE))
  38 #define PSPPIRE_IS_SELECTOR_CLASS(class) (G_TYPE_CHECK_CLASS_TYPE ((class), \
  39     PSPPIRE_SELECTOR_TYPE))
  40
  41
  42 typedef struct _PsppireSelector       PsppireSelector;
  43 typedef struct _PsppireSelectorClass  PsppireSelectorClass;
  44
  45
  46 /* Function for appending selected items to the destination widget */
  47 typedef void SelectItemsFunc (GtkTreeIter iter,
  48                               GtkWidget *dest,
  49                               GtkTreeModel *source_model,
  50                               gpointer data);
  51
  52 /* Function to determine if items may be selected */
  53 typedef gboolean AllowSelectionFunc (GtkWidget *src, GtkWidget *dest);
  54
  55
  56 /* Function to determine whether an item in MODEL, pointed to by ITER
  57    is currently selected.
  58
  59    Returns TRUE if the item is currently selected, FALSE otherwise.
  60  */
  61 typedef gboolean FilterItemsFunc (GtkTreeModel *model,
  62                                   GtkTreeIter *iter,
  63                                   PsppireSelector *selector);
  64
  65 enum psppire_selector_dir
  66   {
  67     PSPPIRE_SELECTOR_SOURCE_TO_DEST,
  68     PSPPIRE_SELECTOR_DEST_TO_SOURCE
  69   };
  70
  71
  72 struct _PsppireSelector
  73 {
  74   GtkButton parent;
  75
  76   /* <private> */
  77   GtkWidget *arrow;
  78   GtkAction *action;
  79
  80   enum psppire_selector_dir direction;
  81   GtkWidget *source;
  82   GtkWidget *dest;
  83
  84   /* A flag indicating that the object is in the process of
  85      updating its subjects.
  86      (not thread safe if two threads access the same object)
  87   */
  88   gboolean selecting;
  89
  90   gint orientation;
  91
  92   GtkTreeModelFilter *filtered_source;
  93
  94   SelectItemsFunc *select_items;
  95   gpointer select_user_data;
  96
  97   FilterItemsFunc *filter;
  98
  99   AllowSelectionFunc *allow_selection;
 100 };
 101
 102 struct _PsppireSelectorClass
 103 {
 104   GtkButtonClass parent_class;
 105
 106   /* This is a hash of Lists of FilterItemsFunc pointers, keyed by address of
 107      the source widget */
 108   GHashTable *source_hash;
 109 };
 110
 111 GType      psppire_selector_get_type        (void);
 112 GtkWidget* psppire_selector_new             (void);
 113 void       psppire_selector_set_subjects    (PsppireSelector *,
 114                                              GtkWidget *,
 115                                              GtkWidget *,
 116                                              SelectItemsFunc *,
 117                                              FilterItemsFunc *,
 118                                              gpointer );
 119
 120 void      psppire_selector_set_allow        (PsppireSelector *, AllowSelectionFunc *);
 121
 122
 123 GType psppire_selector_orientation_get_type (void) G_GNUC_CONST;
 124
 125
 126 typedef enum {
 127   PSPPIRE_SELECT_SOURCE_BEFORE_DEST,
 128   PSPPIRE_SELECT_SOURCE_AFTER_DEST,
 129   PSPPIRE_SELECT_SOURCE_ABOVE_DEST,
 130   PSPPIRE_SELECT_SOURCE_BELOW_DEST
 131 } PsppireSelectorOrientation;
 132
 133 #define G_TYPE_PSPPIRE_SELECTOR_ORIENTATION \
 134   (psppire_selector_orientation_get_type())
 135
 136
 137
 138 G_END_DECLS
 139
 140 #endif /* __PSPPIRE_SELECTOR_H__ */