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gtk2/gtk/gtkbindings.c
Owen Taylor ee2d7c4556 Support "optional" bindings. If a binding signal has a boolean return 
Wed Jan 16 19:23:04 2002  Owen Taylor  <otaylor@redhat.com>

	* gtk/gtkbindings.c (gtk_binding_entry_activate):
	Support "optional" bindings. If a binding signal
	has a boolean return value, and returns FALSE it
	is as if it didn't exist all.

	* gtk/gtkbindings.c (binding_compose_params): Switch
	over to GValue.

	* gtk/gtknotebook.[ch]: Make the select_page() and
	change_current_page() signals only take effect when
	the focus is on the tab area so that key presses
	in children pass up to the toplevel correctly.
2002-01-17 00:34:58 +00:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* GtkBindingSet: Keybinding manager for GtkObjects.
* Copyright (C) 1998 Tim Janik
*
* 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 <ctype.h>
#include <string.h>
#include <stdarg.h>
#include "gtkbindings.h"
#include "gtksignal.h"
#include "gtkwidget.h"
#include "gtkrc.h"
/* --- defines --- */
#define BINDING_MOD_MASK() (gtk_accelerator_get_default_mod_mask () | GDK_RELEASE_MASK)
/* --- structures --- */
typedef struct {
GPatternSpec *pspec;
gpointer user_data;
guint seq_id;
} PatternSpec;
/* --- variables --- */
static GHashTable *binding_entry_hash_table = NULL;
static GSList *binding_set_list = NULL;
static const gchar *key_class_binding_set = "gtk-class-binding-set";
static GQuark key_id_class_binding_set = 0;
/* --- functions --- */
static GtkBindingSignal*
binding_signal_new (const gchar *signal_name,
guint n_args)
{
GtkBindingSignal *signal;
signal = g_new (GtkBindingSignal, 1);
signal->next = NULL;
signal->signal_name = g_strdup (signal_name);
signal->n_args = n_args;
signal->args = g_new0 (GtkBindingArg, n_args);
return signal;
}
static void
binding_signal_free (GtkBindingSignal *sig)
{
guint i;
for (i = 0; i < sig->n_args; i++)
{
if (GTK_FUNDAMENTAL_TYPE (sig->args[i].arg_type) == GTK_TYPE_STRING)
g_free (sig->args[i].d.string_data);
}
g_free (sig->args);
g_free (sig->signal_name);
g_free (sig);
}
static guint
binding_entry_hash (gconstpointer key)
{
register const GtkBindingEntry *e = key;
register guint h;
h = e->keyval;
h ^= e->modifiers;
return h;
}
static gint
binding_entries_compare (gconstpointer a,
gconstpointer b)
{
register const GtkBindingEntry *ea = a;
register const GtkBindingEntry *eb = b;
return (ea->keyval == eb->keyval && ea->modifiers == eb->modifiers);
}
static GtkBindingEntry*
binding_entry_new (GtkBindingSet *binding_set,
guint keyval,
guint modifiers)
{
GtkBindingEntry *entry;
if (!binding_entry_hash_table)
binding_entry_hash_table = g_hash_table_new (binding_entry_hash, binding_entries_compare);
entry = g_new (GtkBindingEntry, 1);
entry->keyval = keyval;
entry->modifiers = modifiers;
entry->binding_set = binding_set,
entry->destroyed = FALSE;
entry->in_emission = FALSE;
entry->signals = NULL;
entry->set_next = binding_set->entries;
binding_set->entries = entry;
entry->hash_next = g_hash_table_lookup (binding_entry_hash_table, entry);
if (entry->hash_next)
g_hash_table_remove (binding_entry_hash_table, entry->hash_next);
g_hash_table_insert (binding_entry_hash_table, entry, entry);
return entry;
}
static void
binding_entry_free (GtkBindingEntry *entry)
{
GtkBindingSignal *sig;
g_assert (entry->set_next == NULL &&
entry->hash_next == NULL &&
entry->in_emission == FALSE &&
entry->destroyed == TRUE);
entry->destroyed = FALSE;
sig = entry->signals;
while (sig)
{
GtkBindingSignal *prev;
prev = sig;
sig = prev->next;
binding_signal_free (prev);
}
g_free (entry);
}
static void
binding_entry_destroy (GtkBindingEntry *entry)
{
GtkBindingEntry *o_entry;
register GtkBindingEntry *tmp;
GtkBindingEntry *begin;
register GtkBindingEntry *last;
/* unlink from binding set
*/
last = NULL;
tmp = entry->binding_set->entries;
while (tmp)
{
if (tmp == entry)
{
if (last)
last->set_next = entry->set_next;
else
entry->binding_set->entries = entry->set_next;
break;
}
last = tmp;
tmp = last->set_next;
}
entry->set_next = NULL;
o_entry = g_hash_table_lookup (binding_entry_hash_table, entry);
begin = o_entry;
last = NULL;
tmp = begin;
while (tmp)
{
if (tmp == entry)
{
if (last)
last->hash_next = entry->hash_next;
else
begin = entry->hash_next;
break;
}
last = tmp;
tmp = last->hash_next;
}
entry->hash_next = NULL;
if (!begin)
g_hash_table_remove (binding_entry_hash_table, entry);
else if (begin != o_entry)
{
g_hash_table_remove (binding_entry_hash_table, entry);
g_hash_table_insert (binding_entry_hash_table, begin, begin);
}
entry->destroyed = TRUE;
if (!entry->in_emission)
binding_entry_free (entry);
}
static GtkBindingEntry*
binding_ht_lookup_list (guint keyval,
guint modifiers)
{
GtkBindingEntry lookup_entry = { 0 };
if (!binding_entry_hash_table)
return NULL;
lookup_entry.keyval = keyval;
lookup_entry.modifiers = modifiers;
return g_hash_table_lookup (binding_entry_hash_table, &lookup_entry);
}
static GtkBindingEntry*
binding_ht_lookup_entry (GtkBindingSet *set,
guint keyval,
guint modifiers)
{
GtkBindingEntry lookup_entry = { 0 };
GtkBindingEntry *entry;
if (!binding_entry_hash_table)
return NULL;
lookup_entry.keyval = keyval;
lookup_entry.modifiers = modifiers;
entry = g_hash_table_lookup (binding_entry_hash_table, &lookup_entry);
for (; entry; entry = entry->hash_next)
if (entry->binding_set == set)
return entry;
return NULL;
}
static gboolean
binding_compose_params (GtkObject *object,
GtkBindingArg *args,
GSignalQuery *query,
GValue **params_p)
{
GValue *params;
const GType *types;
guint i;
gboolean valid;
params = g_new0 (GValue, query->n_params + 1);
*params_p = params;
/* The instance we emit on is the first object in the array
*/
g_value_init (params, G_TYPE_OBJECT);
g_value_set_object (params, G_OBJECT (object));
params++;
types = query->param_types;
valid = TRUE;
for (i = 1; i < query->n_params + 1 && valid; i++)
{
GValue tmp_value = { 0, };
g_value_init (params, *types);
switch (G_TYPE_FUNDAMENTAL (args->arg_type))
{
case G_TYPE_DOUBLE:
g_value_init (&tmp_value, G_TYPE_DOUBLE);
g_value_set_double (&tmp_value, args->d.double_data);
break;
case G_TYPE_LONG:
g_value_init (&tmp_value, G_TYPE_LONG);
g_value_set_long (&tmp_value, args->d.long_data);
break;
case G_TYPE_STRING:
/* gtk_rc_parse_flags/enum() has fancier parsing for this; we can't call
* that since we don't have a GParamSpec, so just do something simple
*/
if (G_TYPE_FUNDAMENTAL (*types) == G_TYPE_ENUM)
{
GEnumClass *class = G_ENUM_CLASS (g_type_class_ref (*types));
valid = FALSE;
if (args->arg_type == GTK_TYPE_IDENTIFIER)
{
GEnumValue *enum_value = NULL;
enum_value = g_enum_get_value_by_name (class, args->d.string_data);
if (!enum_value)
enum_value = g_enum_get_value_by_nick (class, args->d.string_data);
if (enum_value)
{
g_value_set_enum (&tmp_value, enum_value->value);
valid = TRUE;
}
}
g_type_class_unref (class);
}
/* This is just a hack for compatibility with GTK+-1.2 where a string
* could be used for a single flag value / without the support for multiple
* values in gtk_rc_parse_flags(), this isn't very useful.
*/
else if (G_TYPE_FUNDAMENTAL (*types) == G_TYPE_FLAGS)
{
GFlagsClass *class = G_FLAGS_CLASS (g_type_class_ref (*types));
valid = FALSE;
if (args->arg_type == GTK_TYPE_IDENTIFIER)
{
GFlagsValue *flags_value = NULL;
flags_value = g_flags_get_value_by_name (class, args->d.string_data);
if (!flags_value)
flags_value = g_flags_get_value_by_nick (class, args->d.string_data);
if (flags_value)
{
g_value_set_flags (&tmp_value, flags_value->value);
valid = TRUE;
}
}
g_type_class_unref (class);
}
else
{
g_value_init (&tmp_value, G_TYPE_STRING);
g_value_set_static_string (params, args->d.string_data);
}
break;
default:
valid = FALSE;
break;
}
if (valid && !g_value_transform (&tmp_value, params))
valid = FALSE;
g_value_unset (&tmp_value);
types++;
params++;
args++;
}
if (!valid)
{
guint j;
for (j = 0; j < i; j++)
g_value_unset (&(*params_p)[j]);
g_free (*params_p);
*params_p = NULL;
}
return valid;
}
static gboolean
gtk_binding_entry_activate (GtkBindingEntry *entry,
GtkObject *object)
{
GtkBindingSignal *sig;
gboolean old_emission;
gboolean handled = FALSE;
gint i;
old_emission = entry->in_emission;
entry->in_emission = TRUE;
g_object_ref (object);
for (sig = entry->signals; sig; sig = sig->next)
{
GSignalQuery query;
guint signal_id;
GValue *params = NULL;
GValue return_val = { 0, };
gchar *accelerator = NULL;
signal_id = g_signal_lookup (sig->signal_name, G_OBJECT_TYPE (object));
if (!signal_id)
{
accelerator = gtk_accelerator_name (entry->keyval, entry->modifiers);
g_warning ("gtk_binding_entry_activate(): binding \"%s::%s\": "
"could not find signal \"%s\" in the `%s' class ancestry",
entry->binding_set->set_name,
accelerator,
sig->signal_name,
g_type_name (G_OBJECT_TYPE (object)));
g_free (accelerator);
continue;
}
g_signal_query (signal_id, &query);
if (query.n_params != sig->n_args ||
(query.return_type != G_TYPE_NONE && query.return_type != G_TYPE_BOOLEAN) ||
!binding_compose_params (object, sig->args, &query, &params))
{
accelerator = gtk_accelerator_name (entry->keyval, entry->modifiers);
g_warning ("gtk_binding_entry_activate(): binding \"%s::%s\": "
"signature mismatch for signal \"%s\" in the `%s' class ancestry",
entry->binding_set->set_name,
accelerator,
sig->signal_name,
g_type_name (G_OBJECT_TYPE (object)));
}
else if (!(query.signal_flags & GTK_RUN_ACTION))
{
accelerator = gtk_accelerator_name (entry->keyval, entry->modifiers);
g_warning ("gtk_binding_entry_activate(): binding \"%s::%s\": "
"signal \"%s\" in the `%s' class ancestry cannot be used for action emissions",
entry->binding_set->set_name,
accelerator,
sig->signal_name,
g_type_name (G_OBJECT_TYPE (object)));
}
g_free (accelerator);
if (accelerator)
continue;
if (query.return_type == G_TYPE_BOOLEAN)
g_value_init (&return_val, G_TYPE_BOOLEAN);
g_signal_emitv (params, signal_id, 0, &return_val);
if (query.return_type == G_TYPE_BOOLEAN)
{
if (g_value_get_boolean (&return_val))
handled = TRUE;
g_value_unset (&return_val);
}
else
handled = TRUE;
for (i = 0; i < query.n_params + 1; i++)
g_value_unset (&params[i]);
g_free (params);
if (entry->destroyed)
break;
}
g_object_unref (object);
entry->in_emission = old_emission;
if (entry->destroyed && !entry->in_emission)
binding_entry_free (entry);
return handled;
}
GtkBindingSet*
gtk_binding_set_new (const gchar *set_name)
{
GtkBindingSet *binding_set;
g_return_val_if_fail (set_name != NULL, NULL);
binding_set = g_new (GtkBindingSet, 1);
binding_set->set_name = g_strdup (set_name);
binding_set->widget_path_pspecs = NULL;
binding_set->widget_class_pspecs = NULL;
binding_set->class_branch_pspecs = NULL;
binding_set->entries = NULL;
binding_set->current = NULL;
binding_set_list = g_slist_prepend (binding_set_list, binding_set);
return binding_set;
}
GtkBindingSet*
gtk_binding_set_by_class (gpointer object_class)
{
GtkObjectClass *class = object_class;
GtkBindingSet* binding_set;
g_return_val_if_fail (GTK_IS_OBJECT_CLASS (class), NULL);
if (!key_id_class_binding_set)
key_id_class_binding_set = g_quark_from_static_string (key_class_binding_set);
binding_set = g_dataset_id_get_data (class, key_id_class_binding_set);
if (binding_set)
return binding_set;
binding_set = gtk_binding_set_new (gtk_type_name (GTK_CLASS_TYPE (class)));
gtk_binding_set_add_path (binding_set,
GTK_PATH_CLASS,
gtk_type_name (GTK_CLASS_TYPE (class)),
GTK_PATH_PRIO_GTK);
g_dataset_id_set_data (class, key_id_class_binding_set, binding_set);
return binding_set;
}
GtkBindingSet*
gtk_binding_set_find (const gchar *set_name)
{
GSList *slist;
g_return_val_if_fail (set_name != NULL, NULL);
for (slist = binding_set_list; slist; slist = slist->next)
{
GtkBindingSet *binding_set;
binding_set = slist->data;
if (g_str_equal (binding_set->set_name, (gpointer) set_name))
return binding_set;
}
return NULL;
}
gboolean
gtk_binding_set_activate (GtkBindingSet *binding_set,
guint keyval,
guint modifiers,
GtkObject *object)
{
GtkBindingEntry *entry;
g_return_val_if_fail (binding_set != NULL, FALSE);
g_return_val_if_fail (object != NULL, FALSE);
g_return_val_if_fail (GTK_IS_OBJECT (object), FALSE);
keyval = gdk_keyval_to_lower (keyval);
modifiers = modifiers & BINDING_MOD_MASK ();
entry = binding_ht_lookup_entry (binding_set, keyval, modifiers);
if (entry)
return gtk_binding_entry_activate (entry, object);
return FALSE;
}
void
gtk_binding_entry_clear (GtkBindingSet *binding_set,
guint keyval,
guint modifiers)
{
GtkBindingEntry *entry;
g_return_if_fail (binding_set != NULL);
keyval = gdk_keyval_to_lower (keyval);
modifiers = modifiers & BINDING_MOD_MASK ();
entry = binding_ht_lookup_entry (binding_set, keyval, modifiers);
if (entry)
binding_entry_destroy (entry);
entry = binding_entry_new (binding_set, keyval, modifiers);
}
void
gtk_binding_entry_remove (GtkBindingSet *binding_set,
guint keyval,
guint modifiers)
{
GtkBindingEntry *entry;
g_return_if_fail (binding_set != NULL);
keyval = gdk_keyval_to_lower (keyval);
modifiers = modifiers & BINDING_MOD_MASK ();
entry = binding_ht_lookup_entry (binding_set, keyval, modifiers);
if (entry)
binding_entry_destroy (entry);
}
void
gtk_binding_entry_add_signall (GtkBindingSet *binding_set,
guint keyval,
guint modifiers,
const gchar *signal_name,
GSList *binding_args)
{
GtkBindingEntry *entry;
GtkBindingSignal *signal, **signal_p;
GSList *slist;
guint n = 0;
GtkBindingArg *arg;
g_return_if_fail (binding_set != NULL);
g_return_if_fail (signal_name != NULL);
keyval = gdk_keyval_to_lower (keyval);
modifiers = modifiers & BINDING_MOD_MASK ();
signal = binding_signal_new (signal_name, g_slist_length (binding_args));
arg = signal->args;
for (slist = binding_args; slist; slist = slist->next)
{
GtkBindingArg *tmp_arg;
tmp_arg = slist->data;
if (!tmp_arg)
{
g_warning ("gtk_binding_entry_add_signall(): arg[%u] is `NULL'", n);
binding_signal_free (signal);
return;
}
switch (GTK_FUNDAMENTAL_TYPE (tmp_arg->arg_type))
{
case GTK_TYPE_LONG:
arg->arg_type = GTK_TYPE_LONG;
arg->d.long_data = tmp_arg->d.long_data;
break;
case GTK_TYPE_DOUBLE:
arg->arg_type = GTK_TYPE_DOUBLE;
arg->d.double_data = tmp_arg->d.double_data;
break;
case GTK_TYPE_STRING:
if (tmp_arg->arg_type != GTK_TYPE_IDENTIFIER)
arg->arg_type = GTK_TYPE_STRING;
else
arg->arg_type = GTK_TYPE_IDENTIFIER;
arg->d.string_data = g_strdup (tmp_arg->d.string_data);
if (!arg->d.string_data)
{
g_warning ("gtk_binding_entry_add_signall(): value of `string' arg[%u] is `NULL'", n);
binding_signal_free (signal);
return;
}
break;
default:
g_warning ("gtk_binding_entry_add_signall(): unsupported type `%s' for arg[%u]",
gtk_type_name (arg->arg_type), n);
binding_signal_free (signal);
return;
}
arg++;
n++;
}
entry = binding_ht_lookup_entry (binding_set, keyval, modifiers);
if (!entry)
{
gtk_binding_entry_add (binding_set, keyval, modifiers);
entry = binding_ht_lookup_entry (binding_set, keyval, modifiers);
}
signal_p = &entry->signals;
while (*signal_p)
signal_p = &(*signal_p)->next;
*signal_p = signal;
}
void
gtk_binding_entry_add_signal (GtkBindingSet *binding_set,
guint keyval,
guint modifiers,
const gchar *signal_name,
guint n_args,
...)
{
GSList *slist, *free_slist;
va_list args;
guint i;
g_return_if_fail (binding_set != NULL);
g_return_if_fail (signal_name != NULL);
keyval = gdk_keyval_to_lower (keyval);
modifiers = modifiers & BINDING_MOD_MASK ();
va_start (args, n_args);
slist = NULL;
for (i = 0; i < n_args; i++)
{
GtkBindingArg *arg;
arg = g_new0 (GtkBindingArg, 1);
slist = g_slist_prepend (slist, arg);
arg->arg_type = va_arg (args, GtkType);
switch (GTK_FUNDAMENTAL_TYPE (arg->arg_type))
{
/* for elaborated commenting about var args collection, take a look
* at gtk_arg_collect_value() in gtkargcollector.c
*/
case GTK_TYPE_CHAR:
case GTK_TYPE_UCHAR:
case GTK_TYPE_INT:
case GTK_TYPE_UINT:
case GTK_TYPE_BOOL:
case GTK_TYPE_ENUM:
case GTK_TYPE_FLAGS:
arg->arg_type = GTK_TYPE_LONG;
arg->d.long_data = va_arg (args, gint);
break;
case GTK_TYPE_LONG:
case GTK_TYPE_ULONG:
arg->arg_type = GTK_TYPE_LONG;
arg->d.long_data = va_arg (args, glong);
break;
case GTK_TYPE_FLOAT:
case GTK_TYPE_DOUBLE:
arg->arg_type = GTK_TYPE_DOUBLE;
arg->d.double_data = va_arg (args, gdouble);
break;
case GTK_TYPE_STRING:
if (arg->arg_type != GTK_TYPE_IDENTIFIER)
arg->arg_type = GTK_TYPE_STRING;
arg->d.string_data = va_arg (args, gchar*);
if (!arg->d.string_data)
{
g_warning ("gtk_binding_entry_add_signal(): type `%s' arg[%u] is `NULL'",
gtk_type_name (arg->arg_type),
i);
i += n_args + 1;
}
break;
default:
g_warning ("gtk_binding_entry_add_signal(): unsupported type `%s' for arg[%u]",
gtk_type_name (arg->arg_type), i);
i += n_args + 1;
break;
}
}
va_end (args);
if (i == n_args || i == 0)
{
slist = g_slist_reverse (slist);
gtk_binding_entry_add_signall (binding_set, keyval, modifiers, signal_name, slist);
}
free_slist = slist;
while (slist)
{
g_free (slist->data);
slist = slist->next;
}
g_slist_free (free_slist);
}
void
gtk_binding_set_add_path (GtkBindingSet *binding_set,
GtkPathType path_type,
const gchar *path_pattern,
GtkPathPriorityType priority)
{
PatternSpec *pspec;
GSList **slist_p, *slist;
static guint seq_id = 0;
g_return_if_fail (binding_set != NULL);
g_return_if_fail (path_pattern != NULL);
g_return_if_fail (priority <= GTK_PATH_PRIO_MASK);
priority &= GTK_PATH_PRIO_MASK;
switch (path_type)
{
case GTK_PATH_WIDGET:
slist_p = &binding_set->widget_path_pspecs;
break;
case GTK_PATH_WIDGET_CLASS:
slist_p = &binding_set->widget_class_pspecs;
break;
case GTK_PATH_CLASS:
slist_p = &binding_set->class_branch_pspecs;
break;
default:
g_assert_not_reached ();
slist_p = NULL;
break;
}
pspec = g_new (PatternSpec, 1);
pspec->pspec = g_pattern_spec_new (path_pattern);
pspec->seq_id = priority << 28;
pspec->user_data = binding_set;
slist = *slist_p;
while (slist)
{
PatternSpec *tmp_pspec;
tmp_pspec = slist->data;
slist = slist->next;
if (g_pattern_spec_equal (tmp_pspec->pspec, pspec->pspec))
{
GtkPathPriorityType lprio = tmp_pspec->seq_id >> 28;
g_pattern_spec_free (pspec->pspec);
g_free (pspec);
pspec = NULL;
if (lprio < priority)
{
tmp_pspec->seq_id &= 0x0fffffff;
tmp_pspec->seq_id |= priority << 28;
}
break;
}
}
if (pspec)
{
pspec->seq_id |= seq_id++ & 0x0fffffff;
*slist_p = g_slist_prepend (*slist_p, pspec);
}
}
static inline gboolean
binding_match_activate (GSList *pspec_list,
GtkObject *object,
guint path_length,
const gchar *path,
const gchar *path_reversed)
{
GSList *slist;
for (slist = pspec_list; slist; slist = slist->next)
{
PatternSpec *pspec;
pspec = slist->data;
if (g_pattern_match (pspec->pspec, path_length, path, path_reversed))
{
GtkBindingSet *binding_set;
binding_set = pspec->user_data;
if (gtk_binding_entry_activate (binding_set->current, object))
return TRUE;
}
}
return FALSE;
}
static gint
gtk_binding_pattern_compare (gconstpointer new_pattern,
gconstpointer existing_pattern)
{
register const PatternSpec *np = new_pattern;
register const PatternSpec *ep = existing_pattern;
/* walk the list as long as the existing patterns have
* higher priorities.
*/
return np->seq_id < ep->seq_id;
}
static inline GSList*
gtk_binding_entries_sort_patterns (GtkBindingEntry *entries,
GtkPathType path_id)
{
GSList *patterns;
patterns = NULL;
while (entries)
{
register GtkBindingSet *binding_set;
GSList *slist = NULL;
binding_set = entries->binding_set;
binding_set->current = entries;
switch (path_id)
{
case GTK_PATH_WIDGET:
slist = binding_set->widget_path_pspecs;
break;
case GTK_PATH_WIDGET_CLASS:
slist = binding_set->widget_class_pspecs;
break;
case GTK_PATH_CLASS:
slist = binding_set->class_branch_pspecs;
break;
}
for (; slist; slist = slist->next)
{
PatternSpec *pspec;
pspec = slist->data;
patterns = g_slist_insert_sorted (patterns, pspec, gtk_binding_pattern_compare);
}
entries = entries->hash_next;
}
return patterns;
}
gboolean
gtk_bindings_activate (GtkObject *object,
guint keyval,
guint modifiers)
{
GtkBindingEntry *entries;
GtkWidget *widget;
gboolean handled = FALSE;
g_return_val_if_fail (object != NULL, FALSE);
g_return_val_if_fail (GTK_IS_OBJECT (object), FALSE);
if (!GTK_IS_WIDGET (object))
return FALSE;
widget = GTK_WIDGET (object);
keyval = gdk_keyval_to_lower (keyval);
modifiers = modifiers & BINDING_MOD_MASK ();
entries = binding_ht_lookup_list (keyval, modifiers);
if (!entries)
return FALSE;
if (!handled)
{
guint path_length;
gchar *path, *path_reversed;
GSList *patterns;
gtk_widget_path (widget, &path_length, &path, &path_reversed);
patterns = gtk_binding_entries_sort_patterns (entries, GTK_PATH_WIDGET);
handled = binding_match_activate (patterns, object, path_length, path, path_reversed);
g_slist_free (patterns);
g_free (path);
g_free (path_reversed);
}
if (!handled)
{
guint path_length;
gchar *path, *path_reversed;
GSList *patterns;
gtk_widget_class_path (widget, &path_length, &path, &path_reversed);
patterns = gtk_binding_entries_sort_patterns (entries, GTK_PATH_WIDGET_CLASS);
handled = binding_match_activate (patterns, object, path_length, path, path_reversed);
g_slist_free (patterns);
g_free (path);
g_free (path_reversed);
}
if (!handled)
{
GSList *patterns;
GtkType class_type;
patterns = gtk_binding_entries_sort_patterns (entries, GTK_PATH_CLASS);
class_type = GTK_OBJECT_TYPE (object);
while (class_type && !handled)
{
guint path_length;
const gchar *path;
gchar *path_reversed;
path = gtk_type_name (class_type);
path_reversed = g_strdup (path);
g_strreverse (path_reversed);
path_length = strlen (path);
handled = binding_match_activate (patterns, object, path_length, path, path_reversed);
g_free (path_reversed);
class_type = gtk_type_parent (class_type);
}
g_slist_free (patterns);
}
return handled;
}
static guint
gtk_binding_parse_signal (GScanner *scanner,
GtkBindingSet *binding_set,
guint keyval,
guint modifiers)
{
gchar *signal;
guint expected_token = 0;
GSList *args;
GSList *slist;
gboolean done;
gboolean negate;
gboolean need_arg;
gboolean seen_comma;
g_return_val_if_fail (scanner != NULL, G_TOKEN_ERROR);
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_STRING)
return G_TOKEN_STRING;
g_scanner_peek_next_token (scanner);
if (scanner->next_token != '(')
{
g_scanner_get_next_token (scanner);
return '(';
}
signal = g_strdup (scanner->value.v_string);
g_scanner_get_next_token (scanner);
negate = FALSE;
args = NULL;
done = FALSE;
need_arg = TRUE;
seen_comma = FALSE;
scanner->config->scan_symbols = FALSE;
do
{
if (need_arg)
expected_token = G_TOKEN_INT;
else
expected_token = ')';
g_scanner_get_next_token (scanner);
switch (scanner->token)
{
GtkBindingArg *arg;
case G_TOKEN_FLOAT:
if (need_arg)
{
need_arg = FALSE;
arg = g_new (GtkBindingArg, 1);
arg->arg_type = GTK_TYPE_DOUBLE;
arg->d.double_data = scanner->value.v_float;
if (negate)
{
arg->d.double_data = - arg->d.double_data;
negate = FALSE;
}
args = g_slist_prepend (args, arg);
}
else
done = TRUE;
break;
case G_TOKEN_INT:
if (need_arg)
{
need_arg = FALSE;
arg = g_new (GtkBindingArg, 1);
arg->arg_type = GTK_TYPE_LONG;
arg->d.long_data = scanner->value.v_int;
if (negate)
{
arg->d.long_data = - arg->d.long_data;
negate = FALSE;
}
args = g_slist_prepend (args, arg);
}
else
done = TRUE;
break;
case G_TOKEN_STRING:
if (need_arg && !negate)
{
need_arg = FALSE;
arg = g_new (GtkBindingArg, 1);
arg->arg_type = GTK_TYPE_STRING;
arg->d.string_data = g_strdup (scanner->value.v_string);
args = g_slist_prepend (args, arg);
}
else
done = TRUE;
break;
case G_TOKEN_IDENTIFIER:
if (need_arg && !negate)
{
need_arg = FALSE;
arg = g_new (GtkBindingArg, 1);
arg->arg_type = GTK_TYPE_IDENTIFIER;
arg->d.string_data = g_strdup (scanner->value.v_identifier);
args = g_slist_prepend (args, arg);
}
else
done = TRUE;
break;
case '-':
if (!need_arg)
done = TRUE;
else if (negate)
{
expected_token = G_TOKEN_INT;
done = TRUE;
}
else
negate = TRUE;
break;
case ',':
seen_comma = TRUE;
if (need_arg)
done = TRUE;
else
need_arg = TRUE;
break;
case ')':
if (!(need_arg && seen_comma) && !negate)
{
args = g_slist_reverse (args);
gtk_binding_entry_add_signall (binding_set,
keyval,
modifiers,
signal,
args);
expected_token = G_TOKEN_NONE;
}
done = TRUE;
break;
default:
done = TRUE;
break;
}
}
while (!done);
scanner->config->scan_symbols = TRUE;
for (slist = args; slist; slist = slist->next)
{
GtkBindingArg *arg;
arg = slist->data;
if (GTK_FUNDAMENTAL_TYPE (arg->arg_type) == GTK_TYPE_STRING)
g_free (arg->d.string_data);
g_free (arg);
}
g_slist_free (args);
g_free (signal);
return expected_token;
}
static inline guint
gtk_binding_parse_bind (GScanner *scanner,
GtkBindingSet *binding_set)
{
guint keyval = 0;
guint modifiers = 0;
g_return_val_if_fail (scanner != NULL, G_TOKEN_ERROR);
g_scanner_get_next_token (scanner);
if (scanner->token != GTK_RC_TOKEN_BIND)
return GTK_RC_TOKEN_BIND;
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_STRING)
return G_TOKEN_STRING;
gtk_accelerator_parse (scanner->value.v_string, &keyval, &modifiers);
modifiers &= BINDING_MOD_MASK ();
if (keyval == 0)
return G_TOKEN_STRING;
g_scanner_get_next_token (scanner);
if (scanner->token != '{')
return '{';
gtk_binding_entry_clear (binding_set, keyval, modifiers);
g_scanner_peek_next_token (scanner);
while (scanner->next_token != '}')
{
switch (scanner->next_token)
{
guint expected_token;
case G_TOKEN_STRING:
expected_token = gtk_binding_parse_signal (scanner,
binding_set,
keyval,
modifiers);
if (expected_token != G_TOKEN_NONE)
return expected_token;
break;
default:
g_scanner_get_next_token (scanner);
return '}';
}
g_scanner_peek_next_token (scanner);
}
g_scanner_get_next_token (scanner);
return G_TOKEN_NONE;
}
guint
gtk_binding_parse_binding (GScanner *scanner)
{
gchar *name;
GtkBindingSet *binding_set;
g_return_val_if_fail (scanner != NULL, G_TOKEN_ERROR);
g_scanner_get_next_token (scanner);
if (scanner->token != GTK_RC_TOKEN_BINDING)
return GTK_RC_TOKEN_BINDING;
g_scanner_get_next_token (scanner);
if (scanner->token != G_TOKEN_STRING)
return G_TOKEN_STRING;
name = g_strdup (scanner->value.v_string);
g_scanner_get_next_token (scanner);
if (scanner->token != '{')
{
g_free (name);
return G_TOKEN_STRING;
}
binding_set = gtk_binding_set_find (name);
if (!binding_set)
binding_set = gtk_binding_set_new (name);
g_free (name);
g_scanner_peek_next_token (scanner);
while (scanner->next_token != '}')
{
switch (scanner->next_token)
{
guint expected_token;
case GTK_RC_TOKEN_BIND:
expected_token = gtk_binding_parse_bind (scanner, binding_set);
if (expected_token != G_TOKEN_NONE)
return expected_token;
break;
default:
g_scanner_get_next_token (scanner);
return '}';
}
g_scanner_peek_next_token (scanner);
}
g_scanner_get_next_token (scanner);
return G_TOKEN_NONE;
}
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