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

   1 /*
   2  *  wdgt-merge-menu.c
   3  *  Copyright (C) 2008-2009  Jim Evins <evins@snaught.com>.
   4  *
   5  *  This file is part of gLabels.
   6  *
   7  *  gLabels is free software: you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation, either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  gLabels is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with gLabels.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <config.h>
  22
  23 #include "wdgt-merge-menu.h"
  24
  25 #include <string.h>
  26 #include <gtk/gtk.h>
  27
  28 #include "marshal.h"
  29
  30 #include "debug.h"
  31
  32
  33 /*===========================================*/
  34 /* Private types                             */
  35 /*===========================================*/
  36
  37
  38 struct _glWdgtMergeMenuPrivate {
  39
  40         GList *menu_items;
  41 };
  42
  43 enum {
  44         FIELD_SELECTED,
  45         LAST_SIGNAL
  46 };
  47
  48 typedef void (*glWdgtMergeMenuSignal) (GObject * object, gpointer data);
  49
  50
  51 /*===========================================*/
  52 /* Private globals                           */
  53 /*===========================================*/
  54
  55 static gint signals[LAST_SIGNAL] = { 0 };
  56
  57
  58 /*===========================================*/
  59 /* Local function prototypes                 */
  60 /*===========================================*/
  61
  62 static void gl_wdgt_merge_menu_finalize      (GObject              *object);
  63
  64
  65 /****************************************************************************/
  66 /* Boilerplate Object stuff.                                                */
  67 /****************************************************************************/
  68 G_DEFINE_TYPE (glWdgtMergeMenu, gl_wdgt_merge_menu, GTK_TYPE_MENU);
  69
  70
  71 static void
  72 gl_wdgt_merge_menu_class_init (glWdgtMergeMenuClass *class)
  73 {
  74         GObjectClass *object_class = G_OBJECT_CLASS (class);
  75
  76         gl_debug (DEBUG_MERGE_MENU, "START");
  77
  78         gl_wdgt_merge_menu_parent_class = g_type_class_peek_parent (class);
  79
  80         object_class->finalize = gl_wdgt_merge_menu_finalize;
  81
  82         signals[FIELD_SELECTED] =
  83             g_signal_new ("field_selected",
  84                           G_OBJECT_CLASS_TYPE(object_class),
  85                           G_SIGNAL_RUN_LAST,
  86                           G_STRUCT_OFFSET (glWdgtMergeMenuClass, field_selected),
  87                           NULL, NULL,
  88                           gl_marshal_VOID__STRING,
  89                           G_TYPE_NONE, 1, G_TYPE_STRING);
  90
  91         gl_debug (DEBUG_MERGE_MENU, "END");
  92 }
  93
  94
  95 static void
  96 gl_wdgt_merge_menu_init (glWdgtMergeMenu *merge_menu)
  97 {
  98         gl_debug (DEBUG_MERGE_MENU, "START");
  99
 100         merge_menu->priv = g_new0 (glWdgtMergeMenuPrivate, 1);
 101
 102         gl_debug (DEBUG_MERGE_MENU, "END");
 103 }
 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
 134 GtkWidget *
 135 gl_wdgt_merge_menu_new (void)
 136 {
 137         glWdgtMergeMenu *merge_menu;
 138
 139         gl_debug (DEBUG_MERGE_MENU, "START");
 140
 141         merge_menu = g_object_new (gl_wdgt_merge_menu_get_type (), NULL);
 142
 143         gl_debug (DEBUG_MERGE_MENU, "END");
 144
 145         return GTK_WIDGET (merge_menu);
 146 }
 147
 148
 149 /*--------------------------------------------------------------------------*/
 150 /* PRIVATE.  Menu item activation callback.                                 */
 151 /*--------------------------------------------------------------------------*/
 152 static void
 153 activate_cb (GtkMenuItem     *menu_item,
 154              glWdgtMergeMenu *merge_menu)
 155 {
 156         gchar *field;
 157
 158         gl_debug (DEBUG_MERGE_MENU, "START");
 159
 160         field = g_object_get_data (G_OBJECT (menu_item), "field");
 161         gl_debug (DEBUG_MERGE_MENU, "Field activated: \"%s\"\n", field );
 162
 163         g_signal_emit (G_OBJECT (merge_menu), signals[FIELD_SELECTED], 0, field);
 164
 165         gl_debug (DEBUG_MERGE_MENU, "END");
 166 }
 167
 168
 169 /****************************************************************************/
 170 /* set field names.                                                         */
 171 /****************************************************************************/
 172 void
 173 gl_wdgt_merge_menu_set_fields (glWdgtMergeMenu *merge_menu,
 174                                GList           *field_list)
 175 {
 176         GList     *p;
 177         GtkWidget *menu_item;
 178         gchar     *field;
 179
 180         gl_debug (DEBUG_MERGE_MENU, "START");
 181
 182         /*
 183          * Remove all old menu items.
 184          */
 185         for ( p = merge_menu->priv->menu_items; p != NULL; p = p->next )
 186         {
 187                 menu_item = GTK_WIDGET (p->data);
 188                 field = g_object_get_data (G_OBJECT (menu_item), "field");
 189                 g_free (field);
 190                 gtk_widget_destroy (menu_item);
 191         }
 192         g_list_free (merge_menu->priv->menu_items);
 193         merge_menu->priv->menu_items = NULL;
 194
 195         /*
 196          * Add new menu items.
 197          */
 198         for ( p = field_list; p != NULL; p = p->next )
 199         {
 200                 menu_item = gtk_menu_item_new_with_label (p->data);
 201                 g_object_set_data (G_OBJECT (menu_item), "field", g_strdup (p->data));
 202                 g_signal_connect (G_OBJECT (menu_item), "activate",
 203                                   G_CALLBACK (activate_cb), merge_menu);
 204                 gtk_menu_shell_append (GTK_MENU_SHELL (merge_menu), menu_item);
 205                 merge_menu->priv->menu_items =
 206                         g_list_append (merge_menu->priv->menu_items, menu_item);
 207         }
 208
 209         gl_debug (DEBUG_MERGE_MENU, "END");
 210 }
 211
 212
 213
 214 /*
 215  * Local Variables:       -- emacs
 216  * mode: C                -- emacs
 217  * c-basic-offset: 8      -- emacs
 218  * tab-width: 8           -- emacs
 219  * indent-tabs-mode: nil  -- emacs
 220  * End:                   -- emacs
 221  */