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/* gtkmnemonichash.c: Sets of mnemonics with cycling
*
* GTK - The GIMP Toolkit
* Copyright (C) 2002, Red Hat Inc.
*
* 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.
*/
#include "gtkmnemonichash.h"
#include "gtkalias.h"
struct _GtkMnemnonicHash
{
GHashTable *hash;
};
GtkMnemonicHash *
_gtk_mnemonic_hash_new (void)
{
GtkMnemonicHash *mnemonic_hash = g_new (GtkMnemonicHash, 1);
mnemonic_hash->hash = g_hash_table_new (g_direct_hash, NULL);
return mnemonic_hash;
}
static void
mnemonic_hash_free_foreach (gpointer key,
gpointer value,
gpointer user)
{
guint keyval = GPOINTER_TO_UINT (key);
GSList *targets = value;
gchar *name = gtk_accelerator_name (keyval, 0);
g_warning ("mnemonic \"%s\" wasn't removed for widget (%p)",
name, targets->data);
g_free (name);
g_slist_free (targets);
}
void
_gtk_mnemonic_hash_free (GtkMnemonicHash *mnemonic_hash)
{
g_hash_table_foreach (mnemonic_hash->hash,
mnemonic_hash_free_foreach,
NULL);
g_hash_table_destroy (mnemonic_hash->hash);
g_free (mnemonic_hash);
}
void
_gtk_mnemonic_hash_add (GtkMnemonicHash *mnemonic_hash,
guint keyval,
GtkWidget *target)
{
gpointer key = GUINT_TO_POINTER (keyval);
GSList *targets, *new_targets;
g_return_if_fail (GTK_IS_WIDGET (target));
targets = g_hash_table_lookup (mnemonic_hash->hash, key);
g_return_if_fail (g_slist_find (targets, target) == NULL);
new_targets = g_slist_append (targets, target);
if (new_targets != targets)
g_hash_table_insert (mnemonic_hash->hash, key, new_targets);
}
void
_gtk_mnemonic_hash_remove (GtkMnemonicHash *mnemonic_hash,
guint keyval,
GtkWidget *target)
{
gpointer key = GUINT_TO_POINTER (keyval);
GSList *targets, *new_targets;
g_return_if_fail (GTK_IS_WIDGET (target));
targets = g_hash_table_lookup (mnemonic_hash->hash, key);
g_return_if_fail (targets && g_slist_find (targets, target) != NULL);
new_targets = g_slist_remove (targets, target);
if (new_targets != targets)
{
if (new_targets == NULL)
g_hash_table_remove (mnemonic_hash->hash, key);
else
g_hash_table_insert (mnemonic_hash->hash, key, new_targets);
}
}
gboolean
_gtk_mnemonic_hash_activate (GtkMnemonicHash *mnemonic_hash,
guint keyval)
{
GSList *list, *targets;
GtkWidget *widget, *chosen_widget;
gboolean overloaded;
targets = g_hash_table_lookup (mnemonic_hash->hash,
GUINT_TO_POINTER (keyval));
if (!targets)
return FALSE;
overloaded = FALSE;
chosen_widget = NULL;
for (list = targets; list; list = list->next)
{
widget = GTK_WIDGET (list->data);
if (GTK_WIDGET_IS_SENSITIVE (widget) &&
GTK_WIDGET_MAPPED (widget) &&
widget->window &&
gdk_window_is_viewable (widget->window))
{
if (chosen_widget)
{
overloaded = TRUE;
break;
}
else
chosen_widget = widget;
}
}
if (chosen_widget)
{
/* For round robin we put the activated entry on
* the end of the list after activation
*/
targets = g_slist_remove (targets, chosen_widget);
targets = g_slist_append (targets, chosen_widget);
g_hash_table_insert (mnemonic_hash->hash,
GUINT_TO_POINTER (keyval),
targets);
return gtk_widget_mnemonic_activate (chosen_widget, overloaded);
}
return FALSE;
}
GSList *
_gtk_mnemonic_hash_lookup (GtkMnemonicHash *mnemonic_hash,
guint keyval)
{
return g_hash_table_lookup (mnemonic_hash->hash, GUINT_TO_POINTER (keyval));
}
static void
mnemonic_hash_foreach_func (gpointer key,
gpointer value,
gpointer data)
{
struct {
GtkMnemonicHashForeach func;
gpointer func_data;
} *info = data;
guint keyval = GPOINTER_TO_UINT (key);
GSList *targets = value;
(*info->func) (keyval, targets, info->func_data);
}
void
_gtk_mnemonic_hash_foreach (GtkMnemonicHash *mnemonic_hash,
GtkMnemonicHashForeach func,
gpointer func_data)
{
struct {
GtkMnemonicHashForeach func;
gpointer func_data;
} info;
info.func = func;
info.func_data = func_data;
g_hash_table_foreach (mnemonic_hash->hash,
mnemonic_hash_foreach_func,
&info);
}
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