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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gtktexttagtable.h"
#include "gtkmarshalers.h"
#include "gtktextbuffer.h" /* just for the lame notify_will_remove_tag hack */
#include "gtkintl.h"
#include "gtkalias.h"
#include <stdlib.h>
enum {
TAG_CHANGED,
TAG_ADDED,
TAG_REMOVED,
LAST_SIGNAL
};
enum {
LAST_ARG
};
static void gtk_text_tag_table_finalize (GObject *object);
static void gtk_text_tag_table_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_text_tag_table_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static guint signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE (GtkTextTagTable, gtk_text_tag_table, G_TYPE_OBJECT)
static void
gtk_text_tag_table_class_init (GtkTextTagTableClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->set_property = gtk_text_tag_table_set_property;
object_class->get_property = gtk_text_tag_table_get_property;
object_class->finalize = gtk_text_tag_table_finalize;
signals[TAG_CHANGED] =
g_signal_new (I_("tag-changed"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkTextTagTableClass, tag_changed),
NULL, NULL,
_gtk_marshal_VOID__OBJECT_BOOLEAN,
G_TYPE_NONE,
2,
GTK_TYPE_TEXT_TAG,
G_TYPE_BOOLEAN);
signals[TAG_ADDED] =
g_signal_new (I_("tag-added"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkTextTagTableClass, tag_added),
NULL, NULL,
_gtk_marshal_VOID__OBJECT,
G_TYPE_NONE,
1,
GTK_TYPE_TEXT_TAG);
signals[TAG_REMOVED] =
g_signal_new (I_("tag-removed"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkTextTagTableClass, tag_removed),
NULL, NULL,
_gtk_marshal_VOID__OBJECT,
G_TYPE_NONE,
1,
GTK_TYPE_TEXT_TAG);
}
static void
gtk_text_tag_table_init (GtkTextTagTable *table)
{
table->hash = g_hash_table_new (g_str_hash, g_str_equal);
}
/**
* gtk_text_tag_table_new:
*
* Creates a new #GtkTextTagTable. The table contains no tags by
* default.
*
* Return value: a new #GtkTextTagTable
**/
GtkTextTagTable*
gtk_text_tag_table_new (void)
{
GtkTextTagTable *table;
table = g_object_new (GTK_TYPE_TEXT_TAG_TABLE, NULL);
return table;
}
static void
foreach_unref (GtkTextTag *tag, gpointer data)
{
GSList *tmp;
/* We don't want to emit the remove signal here; so we just unparent
* and unref the tag.
*/
tmp = tag->table->buffers;
while (tmp != NULL)
{
_gtk_text_buffer_notify_will_remove_tag (GTK_TEXT_BUFFER (tmp->data),
tag);
tmp = tmp->next;
}
tag->table = NULL;
g_object_unref (tag);
}
static void
gtk_text_tag_table_finalize (GObject *object)
{
GtkTextTagTable *table;
table = GTK_TEXT_TAG_TABLE (object);
gtk_text_tag_table_foreach (table, foreach_unref, NULL);
g_hash_table_destroy (table->hash);
g_slist_free (table->anonymous);
g_slist_free (table->buffers);
G_OBJECT_CLASS (gtk_text_tag_table_parent_class)->finalize (object);
}
static void
gtk_text_tag_table_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
switch (prop_id)
{
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_text_tag_table_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
switch (prop_id)
{
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/**
* gtk_text_tag_table_add:
* @table: a #GtkTextTagTable
* @tag: a #GtkTextTag
*
* Add a tag to the table. The tag is assigned the highest priority
* in the table.
*
* @tag must not be in a tag table already, and may not have
* the same name as an already-added tag.
**/
void
gtk_text_tag_table_add (GtkTextTagTable *table,
GtkTextTag *tag)
{
guint size;
g_return_if_fail (GTK_IS_TEXT_TAG_TABLE (table));
g_return_if_fail (GTK_IS_TEXT_TAG (tag));
g_return_if_fail (tag->table == NULL);
if (tag->name && g_hash_table_lookup (table->hash, tag->name))
{
g_warning ("A tag named '%s' is already in the tag table.",
tag->name);
return;
}
g_object_ref (tag);
if (tag->name)
g_hash_table_insert (table->hash, tag->name, tag);
else
{
table->anonymous = g_slist_prepend (table->anonymous, tag);
table->anon_count += 1;
}
tag->table = table;
/* We get the highest tag priority, as the most-recently-added
tag. Note that we do NOT use gtk_text_tag_set_priority,
as it assumes the tag is already in the table. */
size = gtk_text_tag_table_get_size (table);
g_assert (size > 0);
tag->priority = size - 1;
g_signal_emit (table, signals[TAG_ADDED], 0, tag);
}
/**
* gtk_text_tag_table_lookup:
* @table: a #GtkTextTagTable
* @name: name of a tag
*
* Look up a named tag.
*
* Return value: The tag, or %NULL if none by that name is in the table.
**/
GtkTextTag*
gtk_text_tag_table_lookup (GtkTextTagTable *table,
const gchar *name)
{
g_return_val_if_fail (GTK_IS_TEXT_TAG_TABLE (table), NULL);
g_return_val_if_fail (name != NULL, NULL);
return g_hash_table_lookup (table->hash, name);
}
/**
* gtk_text_tag_table_remove:
* @table: a #GtkTextTagTable
* @tag: a #GtkTextTag
*
* Remove a tag from the table. This will remove the table's
* reference to the tag, so be careful - the tag will end
* up destroyed if you don't have a reference to it.
**/
void
gtk_text_tag_table_remove (GtkTextTagTable *table,
GtkTextTag *tag)
{
GSList *tmp;
g_return_if_fail (GTK_IS_TEXT_TAG_TABLE (table));
g_return_if_fail (GTK_IS_TEXT_TAG (tag));
g_return_if_fail (tag->table == table);
/* Our little bad hack to be sure buffers don't still have the tag
* applied to text in the buffer
*/
tmp = table->buffers;
while (tmp != NULL)
{
_gtk_text_buffer_notify_will_remove_tag (GTK_TEXT_BUFFER (tmp->data),
tag);
tmp = tmp->next;
}
/* Set ourselves to the highest priority; this means
when we're removed, there won't be any gaps in the
priorities of the tags in the table. */
gtk_text_tag_set_priority (tag, gtk_text_tag_table_get_size (table) - 1);
tag->table = NULL;
if (tag->name)
g_hash_table_remove (table->hash, tag->name);
else
{
table->anonymous = g_slist_remove (table->anonymous, tag);
table->anon_count -= 1;
}
g_signal_emit (table, signals[TAG_REMOVED], 0, tag);
g_object_unref (tag);
}
struct ForeachData
{
GtkTextTagTableForeach func;
gpointer data;
};
static void
hash_foreach (gpointer key, gpointer value, gpointer data)
{
struct ForeachData *fd = data;
g_return_if_fail (GTK_IS_TEXT_TAG (value));
(* fd->func) (value, fd->data);
}
static void
list_foreach (gpointer data, gpointer user_data)
{
struct ForeachData *fd = user_data;
g_return_if_fail (GTK_IS_TEXT_TAG (data));
(* fd->func) (data, fd->data);
}
/**
* gtk_text_tag_table_foreach:
* @table: a #GtkTextTagTable
* @func: a function to call on each tag
* @data: user data
*
* Calls @func on each tag in @table, with user data @data.
* Note that the table may not be modified while iterating
* over it (you can't add/remove tags).
**/
void
gtk_text_tag_table_foreach (GtkTextTagTable *table,
GtkTextTagTableForeach func,
gpointer data)
{
struct ForeachData d;
g_return_if_fail (GTK_IS_TEXT_TAG_TABLE (table));
g_return_if_fail (func != NULL);
d.func = func;
d.data = data;
g_hash_table_foreach (table->hash, hash_foreach, &d);
g_slist_foreach (table->anonymous, list_foreach, &d);
}
/**
* gtk_text_tag_table_get_size:
* @table: a #GtkTextTagTable
*
* Returns the size of the table (number of tags)
*
* Return value: number of tags in @table
**/
gint
gtk_text_tag_table_get_size (GtkTextTagTable *table)
{
g_return_val_if_fail (GTK_IS_TEXT_TAG_TABLE (table), 0);
return g_hash_table_size (table->hash) + table->anon_count;
}
void
_gtk_text_tag_table_add_buffer (GtkTextTagTable *table,
gpointer buffer)
{
g_return_if_fail (GTK_IS_TEXT_TAG_TABLE (table));
table->buffers = g_slist_prepend (table->buffers, buffer);
}
static void
foreach_remove_tag (GtkTextTag *tag, gpointer data)
{
GtkTextBuffer *buffer;
buffer = GTK_TEXT_BUFFER (data);
_gtk_text_buffer_notify_will_remove_tag (buffer, tag);
}
void
_gtk_text_tag_table_remove_buffer (GtkTextTagTable *table,
gpointer buffer)
{
g_return_if_fail (GTK_IS_TEXT_TAG_TABLE (table));
gtk_text_tag_table_foreach (table, foreach_remove_tag, buffer);
table->buffers = g_slist_remove (table->buffers, buffer);
}
#define __GTK_TEXT_TAG_TABLE_C__
#include "gtkaliasdef.c"