git.sur5r.net Git - glabels/blob - glabels2/src/wdgt-merge-menu.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
   2
   3 /*
   4  *  (GLABELS) Label and Business Card Creation program for GNOME
   5  *
   6  *  wdgt_merge_menu.c:  merge menu widget module
   7  *
   8  *  Copyright (C) 2008  Jim Evins <evins@snaught.com>.
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23  */
  24
  25 #include <config.h>
  26
  27 #include "wdgt-merge-menu.h"
  28
  29 #include <string.h>
  30 #include <gtk/gtkmenuitem.h>
  31
  32 #include "marshal.h"
  33
  34 #include "debug.h"
  35
  36 /*===========================================*/
  37 /* Private types                             */
  38 /*===========================================*/
  39
  40
  41 struct _glWdgtMergeMenuPrivate {
  42
  43         GList *menu_items;
  44 };
  45
  46 enum {
  47         FIELD_SELECTED,
  48         LAST_SIGNAL
  49 };
  50
  51 typedef void (*glWdgtMergeMenuSignal) (GObject * object, gpointer data);
  52
  53 /*===========================================*/
  54 /* Private globals                           */
  55 /*===========================================*/
  56
  57 static gint signals[LAST_SIGNAL] = { 0 };
  58
  59 /*===========================================*/
  60 /* Local function prototypes                 */
  61 /*===========================================*/
  62
  63 static void gl_wdgt_merge_menu_finalize      (GObject              *object);
  64
  65
  66 \f
  67 /****************************************************************************/
  68 /* Boilerplate Object stuff.                                                */
  69 /****************************************************************************/
  70 G_DEFINE_TYPE (glWdgtMergeMenu, gl_wdgt_merge_menu, GTK_TYPE_MENU);
  71
  72
  73 static void
  74 gl_wdgt_merge_menu_class_init (glWdgtMergeMenuClass *class)
  75 {
  76         GObjectClass *object_class = G_OBJECT_CLASS (class);
  77
  78         gl_debug (DEBUG_MERGE_MENU, "START");
  79
  80         gl_wdgt_merge_menu_parent_class = g_type_class_peek_parent (class);
  81
  82         object_class->finalize = gl_wdgt_merge_menu_finalize;
  83
  84         signals[FIELD_SELECTED] =
  85             g_signal_new ("field_selected",
  86                           G_OBJECT_CLASS_TYPE(object_class),
  87                           G_SIGNAL_RUN_LAST,
  88                           G_STRUCT_OFFSET (glWdgtMergeMenuClass, field_selected),
  89                           NULL, NULL,
  90                           gl_marshal_VOID__STRING,
  91                           G_TYPE_NONE, 1, G_TYPE_STRING);
  92
  93         gl_debug (DEBUG_MERGE_MENU, "END");
  94 }
  95
  96 static void
  97 gl_wdgt_merge_menu_init (glWdgtMergeMenu *merge_menu)
  98 {
  99         gl_debug (DEBUG_MERGE_MENU, "START");
 100
 101         merge_menu->priv = g_new0 (glWdgtMergeMenuPrivate, 1);
 102
 103         gl_debug (DEBUG_MERGE_MENU, "END");
 104 }
 105
 106 static void
 107 gl_wdgt_merge_menu_finalize (GObject *object)
 108 {
 109         glWdgtMergeMenu *merge_menu = GL_WDGT_MERGE_MENU (object);
 110         GList           *p;
 111         GtkWidget       *menu_item;
 112         gchar           *field;
 113
 114         gl_debug (DEBUG_MERGE_MENU, "START");
 115
 116         g_return_if_fail (object != NULL);
 117         g_return_if_fail (GL_IS_WDGT_MERGE_MENU (object));
 118
 119         for ( p = merge_menu->priv->menu_items; p != NULL; p = p->next )
 120         {
 121                 menu_item = GTK_WIDGET (p->data);
 122                 field = g_object_get_data (G_OBJECT (menu_item), "field");
 123                 g_free (field);
 124         }
 125         g_list_free (merge_menu->priv->menu_items);
 126         g_free (merge_menu->priv);
 127
 128         G_OBJECT_CLASS (gl_wdgt_merge_menu_parent_class)->finalize (object);
 129
 130         gl_debug (DEBUG_MERGE_MENU, "END");
 131 }
 132
 133 GtkWidget *
 134 gl_wdgt_merge_menu_new (void)
 135 {
 136         glWdgtMergeMenu *merge_menu;
 137
 138         gl_debug (DEBUG_MERGE_MENU, "START");
 139
 140         merge_menu = g_object_new (gl_wdgt_merge_menu_get_type (), NULL);
 141
 142         gl_debug (DEBUG_MERGE_MENU, "END");
 143
 144         return GTK_WIDGET (merge_menu);
 145 }
 146
 147
 148 /*--------------------------------------------------------------------------*/
 149 /* PRIVATE.  Menu item activation callback.                                 */
 150 /*--------------------------------------------------------------------------*/
 151 static void
 152 activate_cb (GtkMenuItem     *menu_item,
 153              glWdgtMergeMenu *merge_menu)
 154 {
 155         gchar *field;
 156
 157         gl_debug (DEBUG_MERGE_MENU, "START");
 158
 159         field = g_object_get_data (G_OBJECT (menu_item), "field");
 160         gl_debug (DEBUG_MERGE_MENU, "Field activated: \"%s\"\n", field );
 161
 162         g_signal_emit (G_OBJECT (merge_menu), signals[FIELD_SELECTED], 0, field);
 163
 164         gl_debug (DEBUG_MERGE_MENU, "END");
 165 }
 166
 167 /****************************************************************************/
 168 /* set field names.                                                         */
 169 /****************************************************************************/
 170 void
 171 gl_wdgt_merge_menu_set_fields (glWdgtMergeMenu *merge_menu,
 172                                GList           *field_list)
 173 {
 174         GList     *p;
 175         GtkWidget *menu_item;
 176         gchar     *field;
 177
 178         gl_debug (DEBUG_MERGE_MENU, "START");
 179
 180         /*
 181          * Remove all old menu items.
 182          */
 183         for ( p = merge_menu->priv->menu_items; p != NULL; p = p->next )
 184         {
 185                 menu_item = GTK_WIDGET (p->data);
 186                 field = g_object_get_data (G_OBJECT (menu_item), "field");
 187                 g_free (field);
 188                 gtk_widget_destroy (menu_item);
 189         }
 190         g_list_free (merge_menu->priv->menu_items);
 191         merge_menu->priv->menu_items = NULL;
 192
 193         /*
 194          * Add new menu items.
 195          */
 196         for ( p = field_list; p != NULL; p = p->next )
 197         {
 198                 menu_item = gtk_menu_item_new_with_label (p->data);
 199                 g_object_set_data (G_OBJECT (menu_item), "field", g_strdup (p->data));
 200                 g_signal_connect (G_OBJECT (menu_item), "activate",
 201                                   G_CALLBACK (activate_cb), merge_menu);
 202                 gtk_menu_shell_append (GTK_MENU_SHELL (merge_menu), menu_item);
 203                 merge_menu->priv->menu_items =
 204                         g_list_append (merge_menu->priv->menu_items, menu_item);
 205         }
 206
 207         gl_debug (DEBUG_MERGE_MENU, "END");
 208 }
 209