Pileus Git - ~andy/gtk/blob - gtk/gtktexttagtable.c

   1
   2 #include "gtktexttagtable.h"
   3 #include "gtksignal.h"
   4
   5 #include <stdlib.h>
   6
   7 enum {
   8   TAG_CHANGED,
   9   TAG_ADDED,
  10   TAG_REMOVED,
  11   LAST_SIGNAL
  12 };
  13
  14 enum {
  15   LAST_ARG
  16 };
  17
  18 static void gtk_text_tag_table_init (GtkTextTagTable *table);
  19 static void gtk_text_tag_table_class_init (GtkTextTagTableClass *klass);
  20 static void gtk_text_tag_table_destroy (GtkObject *object);
  21 static void gtk_text_tag_table_finalize (GObject *object);
  22 static void gtk_text_tag_table_set_arg (GtkObject *object, GtkArg *arg, guint arg_id);
  23 static void gtk_text_tag_table_get_arg (GtkObject *object, GtkArg *arg, guint arg_id);
  24
  25 static GtkObjectClass *parent_class = NULL;
  26 static guint signals[LAST_SIGNAL] = { 0 };
  27
  28 GtkType
  29 gtk_text_tag_table_get_type (void)
  30 {
  31   static GtkType our_type = 0;
  32
  33   if (our_type == 0)
  34     {
  35       static const GtkTypeInfo our_info =
  36       {
  37         "GtkTextTagTable",
  38         sizeof (GtkTextTagTable),
  39         sizeof (GtkTextTagTableClass),
  40         (GtkClassInitFunc) gtk_text_tag_table_class_init,
  41         (GtkObjectInitFunc) gtk_text_tag_table_init,
  42         /* reserved_1 */ NULL,
  43         /* reserved_2 */ NULL,
  44         (GtkClassInitFunc) NULL
  45       };
  46
  47     our_type = gtk_type_unique (GTK_TYPE_OBJECT, &our_info);
  48   }
  49
  50   return our_type;
  51 }
  52
  53 static void
  54 gtk_text_tag_table_class_init (GtkTextTagTableClass *klass)
  55 {
  56   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
  57   GtkObjectClass *object_class = GTK_OBJECT_CLASS (klass);
  58
  59   parent_class = gtk_type_class (GTK_TYPE_OBJECT);
  60
  61   signals[TAG_CHANGED] =
  62     gtk_signal_new ("tag_changed",
  63                     GTK_RUN_LAST,
  64                     GTK_CLASS_TYPE (object_class),
  65                     GTK_SIGNAL_OFFSET (GtkTextTagTableClass, tag_changed),
  66                     gtk_marshal_NONE__POINTER_INT,
  67                     GTK_TYPE_NONE,
  68                     2,
  69                     GTK_TYPE_OBJECT,
  70                     GTK_TYPE_BOOL);
  71
  72   signals[TAG_ADDED] =
  73     gtk_signal_new ("tag_added",
  74                     GTK_RUN_LAST,
  75                     GTK_CLASS_TYPE (object_class),
  76                     GTK_SIGNAL_OFFSET (GtkTextTagTableClass, tag_added),
  77                     gtk_marshal_NONE__POINTER,
  78                     GTK_TYPE_NONE,
  79                     1,
  80                     GTK_TYPE_OBJECT);
  81
  82   signals[TAG_REMOVED] =
  83     gtk_signal_new ("tag_removed",
  84                     GTK_RUN_LAST,
  85                     GTK_CLASS_TYPE (object_class),
  86                     GTK_SIGNAL_OFFSET (GtkTextTagTableClass, tag_removed),
  87                     gtk_marshal_NONE__POINTER,
  88                     GTK_TYPE_NONE,
  89                     1,
  90                     GTK_TYPE_OBJECT);
  91
  92
  93   gtk_object_class_add_signals (object_class, signals, LAST_SIGNAL);
  94
  95   object_class->set_arg = gtk_text_tag_table_set_arg;
  96   object_class->get_arg = gtk_text_tag_table_get_arg;
  97
  98   object_class->destroy = gtk_text_tag_table_destroy;
  99   gobject_class->finalize = gtk_text_tag_table_finalize;
 100 }
 101
 102 void
 103 gtk_text_tag_table_init (GtkTextTagTable *table)
 104 {
 105   table->hash = g_hash_table_new(g_str_hash, g_str_equal);
 106 }
 107
 108 GtkTextTagTable*
 109 gtk_text_tag_table_new (void)
 110 {
 111   GtkTextTagTable *table;
 112
 113   table = GTK_TEXT_TAG_TABLE (gtk_type_new (gtk_text_tag_table_get_type ()));
 114
 115   return table;
 116 }
 117
 118 static void
 119 gtk_text_tag_table_destroy (GtkObject *object)
 120 {
 121   GtkTextTagTable *table;
 122
 123   table = GTK_TEXT_TAG_TABLE(object);
 124
 125   (* GTK_OBJECT_CLASS(parent_class)->destroy) (object);
 126 }
 127
 128 static void
 129 gtk_text_tag_table_finalize (GObject *object)
 130 {
 131   GtkTextTagTable *table;
 132
 133   table = GTK_TEXT_TAG_TABLE(object);
 134
 135   g_hash_table_destroy(table->hash);
 136
 137   (* G_OBJECT_CLASS(parent_class)->finalize) (object);
 138 }
 139
 140 static void
 141 gtk_text_tag_table_set_arg (GtkObject *object, GtkArg *arg, guint arg_id)
 142 {
 143   GtkTextTagTable *table;
 144
 145   table = GTK_TEXT_TAG_TABLE(object);
 146
 147   switch (arg_id)
 148     {
 149
 150     default:
 151       g_assert_not_reached();
 152       break;
 153     }
 154 }
 155
 156 static void
 157 gtk_text_tag_table_get_arg (GtkObject *object, GtkArg *arg, guint arg_id)
 158 {
 159   GtkTextTagTable *table;
 160
 161   table = GTK_TEXT_TAG_TABLE(object);
 162
 163   switch (arg_id)
 164     {
 165
 166     default:
 167       arg->type = GTK_TYPE_INVALID;
 168       break;
 169     }
 170 }
 171
 172 void
 173 gtk_text_tag_table_add(GtkTextTagTable *table, GtkTextTag *tag)
 174 {
 175   guint size;
 176
 177   g_return_if_fail(GTK_IS_TEXT_TAG_TABLE(table));
 178   g_return_if_fail(GTK_IS_OBJECT(tag));
 179   g_return_if_fail(g_hash_table_lookup(table->hash, tag->name) == NULL);
 180   g_return_if_fail(tag->table == NULL);
 181
 182   gtk_object_ref(GTK_OBJECT(tag));
 183   gtk_object_sink(GTK_OBJECT(tag));
 184   g_hash_table_insert(table->hash, tag->name, tag);
 185   tag->table = table;
 186
 187   /* We get the highest tag priority, as the most-recently-added
 188      tag. Note that we do NOT use gtk_text_tag_set_priority,
 189      as it assumes the tag is already in the table. */
 190   size = gtk_text_tag_table_size(table);
 191   g_assert(size > 0);
 192   tag->priority = size - 1;
 193
 194   gtk_signal_emit(GTK_OBJECT(table), signals[TAG_ADDED], tag);
 195 }
 196
 197 GtkTextTag*
 198 gtk_text_tag_table_lookup(GtkTextTagTable *table, const gchar *name)
 199 {
 200   g_return_val_if_fail(GTK_IS_TEXT_TAG_TABLE(table), NULL);
 201   g_return_val_if_fail(name != NULL, NULL);
 202
 203   return g_hash_table_lookup(table->hash, name);
 204 }
 205
 206 void
 207 gtk_text_tag_table_remove(GtkTextTagTable *table, const gchar *name)
 208 {
 209   GtkTextTag *tag;
 210
 211   g_return_if_fail(GTK_IS_TEXT_TAG_TABLE(table));
 212   g_return_if_fail(name != NULL);
 213
 214   tag = g_hash_table_lookup(table->hash, name);
 215
 216   if (tag == NULL)
 217     return;
 218
 219   g_return_if_fail(tag->table == table);
 220
 221   /* Set ourselves to the highest priority; this means
 222      when we're removed, there won't be any gaps in the
 223      priorities of the tags in the table. */
 224   gtk_text_tag_set_priority(tag, gtk_text_tag_table_size(table) - 1);
 225
 226   tag->table = NULL;
 227
 228   g_hash_table_remove(table->hash, name);
 229
 230   gtk_signal_emit(GTK_OBJECT(table), signals[TAG_REMOVED], tag);
 231
 232   gtk_object_unref(GTK_OBJECT(tag));
 233 }
 234
 235 void
 236 gtk_text_tag_table_foreach(GtkTextTagTable *table,
 237                             GHFunc func,
 238                             gpointer data)
 239 {
 240   g_return_if_fail(GTK_IS_TEXT_TAG_TABLE(table));
 241   g_return_if_fail(func != NULL);
 242
 243   g_hash_table_foreach(table->hash, func, data);
 244 }
 245
 246 guint
 247 gtk_text_tag_table_size(GtkTextTagTable *table)
 248 {
 249   g_return_val_if_fail(GTK_IS_TEXT_TAG_TABLE(table), 0);
 250
 251   return g_hash_table_size(table->hash);
 252 }