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|
/*
A library to communicate a menu object set accross DBus and
track updates and maintain consistency.
Copyright 2009 Canonical Ltd.
Authors:
Ted Gould <ted@canonical.com>
This program is free software: you can redistribute it and/or modify it
under the terms of either or both of the following licenses:
1) the GNU Lesser General Public License version 3, as published by the
Free Software Foundation; and/or
2) the GNU Lesser General Public License version 2.1, as published by
the Free Software Foundation.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranties of
MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR
PURPOSE. See the applicable version of the GNU Lesser General Public
License for more details.
You should have received a copy of both the GNU Lesser General Public
License version 3 and version 2.1 along with this program. If not, see
<http://www.gnu.org/licenses/>
*/
#include <stdlib.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "menuitem.h"
#include "menuitem-marshal.h"
#include "menuitem-private.h"
#ifdef MASSIVEDEBUGGING
#define LABEL(x) dbusmenu_menuitem_property_get(DBUSMENU_MENUITEM(x), DBUSMENU_MENUITEM_PROP_LABEL)
#define ID(x) dbusmenu_menuitem_get_id(DBUSMENU_MENUITEM(x))
#endif
/* Private */
/**
DbusmenuMenuitemPrivate:
@id: The ID of this menu item
@children: A list of #DbusmenuMenuitem objects that are
children to this one.
@properties: All of the properties on this menu item.
@root: Whether this node is the root node
These are the little secrets that we don't want getting
out of data that we have. They can still be gotten using
accessor functions, but are protected appropriately.
*/
typedef struct _DbusmenuMenuitemPrivate DbusmenuMenuitemPrivate;
struct _DbusmenuMenuitemPrivate
{
gint id;
GList * children;
GHashTable * properties;
gboolean root;
};
/* Signals */
enum {
PROPERTY_CHANGED,
ITEM_ACTIVATED,
CHILD_ADDED,
CHILD_REMOVED,
CHILD_MOVED,
REALIZED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
/* Properties */
enum {
PROP_0,
PROP_ID,
};
#define PROP_ID_S "id"
#define DBUSMENU_MENUITEM_GET_PRIVATE(o) \
(G_TYPE_INSTANCE_GET_PRIVATE ((o), DBUSMENU_TYPE_MENUITEM, DbusmenuMenuitemPrivate))
/* Prototypes */
static void dbusmenu_menuitem_class_init (DbusmenuMenuitemClass *klass);
static void dbusmenu_menuitem_init (DbusmenuMenuitem *self);
static void dbusmenu_menuitem_dispose (GObject *object);
static void dbusmenu_menuitem_finalize (GObject *object);
static void set_property (GObject * obj, guint id, const GValue * value, GParamSpec * pspec);
static void get_property (GObject * obj, guint id, GValue * value, GParamSpec * pspec);
static void g_value_transform_STRING_BOOLEAN (const GValue * in, GValue * out);
static void g_value_transform_STRING_INT (const GValue * in, GValue * out);
static void handle_event (DbusmenuMenuitem * mi, const gchar * name, const GValue * value, guint timestamp);
/* GObject stuff */
G_DEFINE_TYPE (DbusmenuMenuitem, dbusmenu_menuitem, G_TYPE_OBJECT);
static void
dbusmenu_menuitem_class_init (DbusmenuMenuitemClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (DbusmenuMenuitemPrivate));
object_class->dispose = dbusmenu_menuitem_dispose;
object_class->finalize = dbusmenu_menuitem_finalize;
object_class->set_property = set_property;
object_class->get_property = get_property;
klass->handle_event = handle_event;
/**
DbusmenuMenuitem::property-changed:
@arg0: The #DbusmenuMenuitem object.
@arg1: The name of the property that changed
@arg2: The new value of the property
Emitted everytime a property on a menuitem is either
updated or added.
*/
signals[PROPERTY_CHANGED] = g_signal_new(DBUSMENU_MENUITEM_SIGNAL_PROPERTY_CHANGED,
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET(DbusmenuMenuitemClass, property_changed),
NULL, NULL,
_dbusmenu_menuitem_marshal_VOID__STRING_POINTER,
G_TYPE_NONE, 2, G_TYPE_STRING, G_TYPE_POINTER);
/**
DbusmenuMenuitem::item-activated:
@arg0: The #DbusmenuMenuitem object.
@arg1: The timestamp of when it was activated
Emitted on the objects on the server side when
they are signaled on the client side.
*/
signals[ITEM_ACTIVATED] = g_signal_new(DBUSMENU_MENUITEM_SIGNAL_ITEM_ACTIVATED,
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET(DbusmenuMenuitemClass, item_activated),
NULL, NULL,
_dbusmenu_menuitem_marshal_VOID__UINT,
G_TYPE_NONE, 1, G_TYPE_UINT, G_TYPE_NONE);
/**
DbusmenuMenuitem::child-added:
@arg0: The #DbusmenuMenuitem which is the parent.
@arg1: The #DbusmenuMenuitem which is the child.
@arg2: The position that the child is being added in.
Signaled when the child menuitem has been added to
the parent.
*/
signals[CHILD_ADDED] = g_signal_new(DBUSMENU_MENUITEM_SIGNAL_CHILD_ADDED,
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET(DbusmenuMenuitemClass, child_added),
NULL, NULL,
_dbusmenu_menuitem_marshal_VOID__OBJECT_UINT,
G_TYPE_NONE, 2, G_TYPE_OBJECT, G_TYPE_UINT);
/**
DbusmenuMenuitem::child-removed:
@arg0: The #DbusmenuMenuitem which was the parent.
@arg1: The #DbusmenuMenuitem which was the child.
Signaled when the child menuitem has been requested to
be removed from the parent. This signal is called when
it has been removed from the list but not yet had
#g_object_unref called on it.
*/
signals[CHILD_REMOVED] = g_signal_new(DBUSMENU_MENUITEM_SIGNAL_CHILD_REMOVED,
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET(DbusmenuMenuitemClass, child_removed),
NULL, NULL,
_dbusmenu_menuitem_marshal_VOID__OBJECT,
G_TYPE_NONE, 1, G_TYPE_OBJECT);
/**
DbusmenuMenuitem::child-moved:
@arg0: The #DbusmenuMenuitem which is the parent.
@arg1: The #DbusmenuMenuitem which is the child.
@arg2: The position that the child is being moved to.
@arg3: The position that the child is was in.
Signaled when the child menuitem has had it's location
in the list change.
*/
signals[CHILD_MOVED] = g_signal_new(DBUSMENU_MENUITEM_SIGNAL_CHILD_MOVED,
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET(DbusmenuMenuitemClass, child_moved),
NULL, NULL,
_dbusmenu_menuitem_marshal_VOID__OBJECT_UINT_UINT,
G_TYPE_NONE, 3, G_TYPE_OBJECT, G_TYPE_UINT, G_TYPE_UINT);
/**
DbusmenuMenuitem::realized:
@arg0: The #DbusmenuMenuitem object.
Emitted when the initial request for properties
is complete on the item. If there is a type
handler configured for the "type" parameter
that will be executed before this is signaled.
*/
signals[REALIZED] = g_signal_new(DBUSMENU_MENUITEM_SIGNAL_REALIZED,
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET(DbusmenuMenuitemClass, realized),
NULL, NULL,
_dbusmenu_menuitem_marshal_VOID__VOID,
G_TYPE_NONE, 0, G_TYPE_NONE);
g_object_class_install_property (object_class, PROP_ID,
g_param_spec_int(PROP_ID_S, "ID for the menu item",
"This is a unique indentifier for the menu item.",
-1, 30000, -1,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
/* Check transfer functions for GValue */
if (!g_value_type_transformable(G_TYPE_STRING, G_TYPE_BOOLEAN)) {
g_value_register_transform_func(G_TYPE_STRING, G_TYPE_BOOLEAN, g_value_transform_STRING_BOOLEAN);
}
if (!g_value_type_transformable(G_TYPE_STRING, G_TYPE_INT)) {
g_value_register_transform_func(G_TYPE_STRING, G_TYPE_INT, g_value_transform_STRING_INT);
}
return;
}
/* A little helper function to translate a string into
a boolean value */
static void
g_value_transform_STRING_BOOLEAN (const GValue * in, GValue * out)
{
const gchar * string = g_value_get_string(in);
if (!g_strcmp0(string, "TRUE") || !g_strcmp0(string, "true") || !g_strcmp0(string, "True")) {
g_value_set_boolean(out, TRUE);
} else {
g_value_set_boolean(out, FALSE);
}
return;
}
/* A little helper function to translate a string into
a integer value */
static void
g_value_transform_STRING_INT (const GValue * in, GValue * out)
{
g_value_set_int(out, atoi(g_value_get_string(in)));
return;
}
static gint menuitem_next_id = 1;
/* A small little function to both clear the insides of a
value as well as the memory it itself uses. */
static void
_g_value_free (gpointer data)
{
if (data == NULL) return;
GValue * value = (GValue*)data;
g_value_unset(value);
g_free(data);
return;
}
/* Initialize the values of the in the object, and build the
properties hash table. */
static void
dbusmenu_menuitem_init (DbusmenuMenuitem *self)
{
g_debug("Menuitem init: %X", (guint)self);
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(self);
priv->id = -1;
priv->children = NULL;
priv->properties = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, _g_value_free);
priv->root = FALSE;
return;
}
static void
dbusmenu_menuitem_dispose (GObject *object)
{
g_debug("Menuitem dele: %X", (guint)object);
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(object);
GList * child = NULL;
for (child = priv->children; child != NULL; child = g_list_next(child)) {
g_debug("Unreffing %X", (guint)child->data);
g_object_unref(G_OBJECT(child->data));
}
g_list_free(priv->children);
priv->children = NULL;
G_OBJECT_CLASS (dbusmenu_menuitem_parent_class)->dispose (object);
return;
}
static void
dbusmenu_menuitem_finalize (GObject *object)
{
g_debug("Menuitem dying");
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(object);
if (priv->properties != NULL) {
g_hash_table_destroy(priv->properties);
priv->properties = NULL;
}
G_OBJECT_CLASS (dbusmenu_menuitem_parent_class)->finalize (object);
return;
}
static void
set_property (GObject * obj, guint id, const GValue * value, GParamSpec * pspec)
{
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(obj);
switch (id) {
case PROP_ID:
priv->id = g_value_get_int(value);
if (priv->id > menuitem_next_id) {
menuitem_next_id = priv->id + 1;
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, id, pspec);
break;
}
return;
}
static void
get_property (GObject * obj, guint id, GValue * value, GParamSpec * pspec)
{
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(obj);
switch (id) {
case PROP_ID:
if (priv->id == -1) {
priv->id = menuitem_next_id++;
}
if (dbusmenu_menuitem_get_root(DBUSMENU_MENUITEM(obj))) {
g_value_set_int(value, 0);
} else {
g_value_set_int(value, priv->id);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, id, pspec);
break;
}
return;
}
/* Handles the activate event if it is sent. */
static void
handle_event (DbusmenuMenuitem * mi, const gchar * name, const GValue * value, guint timestamp)
{
if (g_strcmp0(name, "clicked") == 0) {
g_signal_emit(G_OBJECT(mi), signals[ITEM_ACTIVATED], 0, timestamp, TRUE);
}
return;
}
/* Public interface */
/**
dbusmenu_menuitem_new:
Create a new #DbusmenuMenuitem with all default values.
Return value: A newly allocated #DbusmenuMenuitem.
*/
DbusmenuMenuitem *
dbusmenu_menuitem_new (void)
{
return g_object_new(DBUSMENU_TYPE_MENUITEM, NULL);
}
/**
dbusmenu_menuitem_new_with_id:
@id: ID to use for this menuitem
This creates a blank #DbusmenuMenuitem with a specific ID.
Return value: A newly allocated #DbusmenuMenuitem.
*/
DbusmenuMenuitem *
dbusmenu_menuitem_new_with_id (gint id)
{
DbusmenuMenuitem * mi = g_object_new(DBUSMENU_TYPE_MENUITEM, PROP_ID_S, id, NULL);
/* g_debug("New Menuitem id %d goal id %d", dbusmenu_menuitem_get_id(mi), id); */
return mi;
}
/**
dbusmenu_menuitem_get_id:
@mi: The #DbusmenuMenuitem to query.
Gets the unique ID for @mi.
Return value: The ID of the @mi.
*/
gint
dbusmenu_menuitem_get_id (DbusmenuMenuitem * mi)
{
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(mi), -1);
GValue retval = {0};
g_value_init(&retval, G_TYPE_INT);
g_object_get_property(G_OBJECT(mi), PROP_ID_S, &retval);
gint ret = g_value_get_int(&retval);
#ifdef MASSIVEDEBUGGING
g_debug("Getting menuitem ID: %d", ret);
#endif
return ret;
}
/**
dbusmenu_menuitem_get_children:
@mi: The #DbusmenuMenuitem to query.
Returns simply the list of children that this menu item
has. The list is valid until another child related function
is called, where it might be changed.
Return value: A #GList of pointers to #DbusmenuMenuitem objects.
*/
GList *
dbusmenu_menuitem_get_children (DbusmenuMenuitem * mi)
{
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(mi), NULL);
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(mi);
return priv->children;
}
/* For all the taken children we need to signal
that they were removed */
static void
take_children_signal (gpointer data, gpointer user_data)
{
#ifdef MASSIVEDEBUGGING
g_debug("Menuitem %d (%s) signalling child removed %d (%s)", ID(user_data), LABEL(user_data), ID(data), LABEL(data));
#endif
g_signal_emit(G_OBJECT(user_data), signals[CHILD_REMOVED], 0, DBUSMENU_MENUITEM(data), TRUE);
return;
}
/**
dbusmenu_menuitem_take_children:
@mi: The #DbusmenMenuitem to take the children from.
While the name sounds devious that's exactly what this function
does. It takes the list of children from the @mi and clears the
internal list. The calling function is no in charge of the ref's
on the children it has taken. A lot of responsibility involved
in taking children.
Return value: A #GList of pointers to #DbusmenuMenuitem objects.
*/
GList *
dbusmenu_menuitem_take_children (DbusmenuMenuitem * mi)
{
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(mi), NULL);
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(mi);
GList * children = priv->children;
priv->children = NULL;
g_list_foreach(children, take_children_signal, mi);
return children;
}
/**
dbusmenu_menuitem_get_position:
@mi: The #DbusmenuMenuitem to find the position of
@parent: The #DbusmenuMenuitem who's children contain @mi
This function returns the position of the menu item @mi
in the children of @parent. It will return zero if the
menu item can't be found.
Return value: The position of @mi in the children of @parent.
*/
guint
dbusmenu_menuitem_get_position (DbusmenuMenuitem * mi, DbusmenuMenuitem * parent)
{
#ifdef MASSIVEDEBUGGING
if (!DBUSMENU_IS_MENUITEM(mi)) g_warning("Getting position of %d (%s), it's at: %d (mi fail)", ID(mi), LABEL(mi), 0);
if (!DBUSMENU_IS_MENUITEM(parent)) g_warning("Getting position of %d (%s), it's at: %d (parent fail)", ID(mi), LABEL(mi), 0);
#endif
/* TODO: I'm not too happy returning zeros here. But that's all I've got */
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(mi), 0);
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(parent), 0);
GList * childs = dbusmenu_menuitem_get_children(parent);
if (childs == NULL) return 0;
guint count = 0;
for ( ; childs != NULL; childs = childs->next, count++) {
if (childs->data == mi) break;
}
if (childs == NULL) return 0;
#ifdef MASSIVEDEBUGGING
g_debug("Getting position of %d (%s), it's at: %d", ID(mi), LABEL(mi), count);
#endif
return count;
}
/**
dbusmenu_menuitem_child_append:
@mi: The #DbusmenuMenuitem which will become a new parent
@child: The #DbusmenMenuitem that will be a child
This function adds @child to the list of children on @mi at
the end of that list.
Return value: Whether the child has been added successfully.
*/
gboolean
dbusmenu_menuitem_child_append (DbusmenuMenuitem * mi, DbusmenuMenuitem * child)
{
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(mi), FALSE);
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(child), FALSE);
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(mi);
priv->children = g_list_append(priv->children, child);
#ifdef MASSIVEDEBUGGING
g_debug("Menuitem %d (%s) signalling child added %d (%s) at %d", ID(mi), LABEL(mi), ID(child), LABEL(child), g_list_length(priv->children) - 1);
#endif
g_signal_emit(G_OBJECT(mi), signals[CHILD_ADDED], 0, child, g_list_length(priv->children) - 1, TRUE);
return TRUE;
}
/**
dbusmenu_menuitem_child_prepend:
@mi: The #DbusmenuMenuitem which will become a new parent
@child: The #DbusmenMenuitem that will be a child
This function adds @child to the list of children on @mi at
the beginning of that list.
Return value: Whether the child has been added successfully.
*/
gboolean
dbusmenu_menuitem_child_prepend (DbusmenuMenuitem * mi, DbusmenuMenuitem * child)
{
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(mi), FALSE);
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(child), FALSE);
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(mi);
priv->children = g_list_prepend(priv->children, child);
#ifdef MASSIVEDEBUGGING
g_debug("Menuitem %d (%s) signalling child added %d (%s) at %d", ID(mi), LABEL(mi), ID(child), LABEL(child), 0);
#endif
g_signal_emit(G_OBJECT(mi), signals[CHILD_ADDED], 0, child, 0, TRUE);
return TRUE;
}
/**
dbusmenu_menuitem_child_delete:
@mi: The #DbusmenuMenuitem which has @child as a child
@child: The child #DbusmenuMenuitem that you want to no longer
be a child of @mi.
This function removes @child from the children list of @mi. It does
not call #g_object_unref on @child.
Return value: If we were able to delete @child.
*/
gboolean
dbusmenu_menuitem_child_delete (DbusmenuMenuitem * mi, DbusmenuMenuitem * child)
{
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(mi), FALSE);
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(child), FALSE);
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(mi);
priv->children = g_list_remove(priv->children, child);
#ifdef MASSIVEDEBUGGING
g_debug("Menuitem %d (%s) signalling child removed %d (%s)", ID(mi), LABEL(mi), ID(child), LABEL(child));
#endif
g_signal_emit(G_OBJECT(mi), signals[CHILD_REMOVED], 0, child, TRUE);
return TRUE;
}
/**
dbusmenu_menuitem_child_add_position:
@mi: The #DbusmenuMenuitem that we're adding the child @child to.
@child: The #DbusmenuMenuitem to make a child of @mi.
@position: Where in @mi object's list of chidren @child should be placed.
Puts @child in the list of children for @mi at the location
specified in @position. If there is not enough entires available
then @child will be placed at the end of the list.
Return value: Whether @child was added successfully.
*/
gboolean
dbusmenu_menuitem_child_add_position (DbusmenuMenuitem * mi, DbusmenuMenuitem * child, guint position)
{
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(mi), FALSE);
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(child), FALSE);
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(mi);
priv->children = g_list_insert(priv->children, child, position);
#ifdef MASSIVEDEBUGGING
g_debug("Menuitem %d (%s) signalling child added %d (%s) at %d", ID(mi), LABEL(mi), ID(child), LABEL(child), position);
#endif
g_signal_emit(G_OBJECT(mi), signals[CHILD_ADDED], 0, child, position, TRUE);
return TRUE;
}
/**
dbusmenu_menuitem_child_reorder:
@base: The #DbusmenuMenuitem that has children needing realignment
@child: The #DbusmenuMenuitem that is a child needing to be moved
@position: The position in the list to place it in
This function moves a child on the list of children. It is
for a child that is already in the list, but simply needs a
new location.
Return value: Whether the move was successful.
*/
gboolean
dbusmenu_menuitem_child_reorder(DbusmenuMenuitem * mi, DbusmenuMenuitem * child, guint position)
{
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(mi), FALSE);
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(child), FALSE);
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(mi);
gint oldpos = g_list_index(priv->children, child);
if (oldpos == -1) {
g_warning("Can not reorder child that isn't actually a child.");
return FALSE;
}
if (oldpos == position) {
return TRUE;
}
priv->children = g_list_remove(priv->children, child);
priv->children = g_list_insert(priv->children, child, position);
#ifdef MASSIVEDEBUGGING
g_debug("Menuitem %d (%s) signalling child %d (%s) moved from %d to %d", ID(mi), LABEL(mi), ID(child), LABEL(child), oldpos, position);
#endif
g_signal_emit(G_OBJECT(mi), signals[CHILD_MOVED], 0, child, position, oldpos, TRUE);
return TRUE;
}
/**
dbusmenu_menuitem_child_find:
@mi: The #DbusmenuMenuitem who's children to look on
@id: The ID of the child that we're looking for.
Search the children of @mi to find one with the ID of @id.
If it doesn't exist then we return #NULL.
Return value: The menu item with the ID @id or #NULL if it
can't be found.
*/
DbusmenuMenuitem *
dbusmenu_menuitem_child_find (DbusmenuMenuitem * mi, gint id)
{
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(mi), NULL);
GList * childs = dbusmenu_menuitem_get_children(mi);
if (childs == NULL) return NULL;
for ( ; childs == NULL; childs = g_list_next(childs)) {
DbusmenuMenuitem * lmi = DBUSMENU_MENUITEM(childs->data);
if (id == dbusmenu_menuitem_get_id(lmi)) {
return lmi;
}
}
return NULL;
}
typedef struct {
DbusmenuMenuitem * mi;
gint id;
} find_id_t;
/* Basically the heart of the find_id that matches the
API of GFunc. Unfortunately, this goes through all the
children, but it rejects them quickly. */
static void
find_id_helper (gpointer in_mi, gpointer in_find_id)
{
DbusmenuMenuitem * mi = (DbusmenuMenuitem *)in_mi;
find_id_t * find_id = (find_id_t *)in_find_id;
if (find_id->mi != NULL) return;
if (find_id->id == dbusmenu_menuitem_get_id(mi)) {
find_id->mi = mi;
return;
}
g_list_foreach(dbusmenu_menuitem_get_children(mi), find_id_helper, in_find_id);
return;
}
/**
dbusmenu_menuitem_find_id:
@mi: #DbusmenuMenuitem at the top of the tree to search
@id: ID of the #DbusmenuMenuitem to search for
This function searchs the whole tree of children that
are attached to @mi. This could be quite a few nodes, all
the way down the tree. It is a depth first search.
Return value: The #DbusmenuMenuitem with the ID of @id
or #NULL if there isn't such a menu item in the tree
represented by @mi.
*/
DbusmenuMenuitem *
dbusmenu_menuitem_find_id (DbusmenuMenuitem * mi, gint id)
{
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(mi), NULL);
if (id == 0) {
if (dbusmenu_menuitem_get_root(mi) == FALSE) {
g_warning("Getting a menuitem with id zero, but it's not set as root.");
}
return mi;
}
find_id_t find_id = {mi: NULL, id: id};
find_id_helper(mi, &find_id);
return find_id.mi;
}
/**
dbusmenu_menuitem_property_set:
@mi: The #DbusmenuMenuitem to set the property on.
@property: Name of the property to set.
@value: The value of the property.
Takes the pair of @property and @value and places them as a
property on @mi. If a property already exists by that name,
then the value is set to the new value. If not, the property
is added. If the value is changed or the property was previously
unset then the signal #DbusmenuMenuitem::prop-changed will be
emitted by this function.
Return value: A boolean representing if the property value was set.
*/
gboolean
dbusmenu_menuitem_property_set (DbusmenuMenuitem * mi, const gchar * property, const gchar * value)
{
GValue val = {0};
g_value_init(&val, G_TYPE_STRING);
g_value_set_static_string(&val, value);
return dbusmenu_menuitem_property_set_value(mi, property, &val);
}
/**
dbusmenu_menuitem_property_set_bool:
@mi: The #DbusmenuMenuitem to set the property on.
@property: Name of the property to set.
@value: The value of the property.
Takes a boolean @value and sets it on @property as a
property on @mi. If a property already exists by that name,
then the value is set to the new value. If not, the property
is added. If the value is changed or the property was previously
unset then the signal #DbusmenuMenuitem::prop-changed will be
emitted by this function.
Return value: A boolean representing if the property value was set.
*/
gboolean
dbusmenu_menuitem_property_set_bool (DbusmenuMenuitem * mi, const gchar * property, const gboolean value)
{
GValue val = {0};
g_value_init(&val, G_TYPE_BOOLEAN);
g_value_set_boolean(&val, value);
return dbusmenu_menuitem_property_set_value(mi, property, &val);
}
/**
dbusmenu_menuitem_property_set_int:
@mi: The #DbusmenuMenuitem to set the property on.
@property: Name of the property to set.
@value: The value of the property.
Takes a boolean @value and sets it on @property as a
property on @mi. If a property already exists by that name,
then the value is set to the new value. If not, the property
is added. If the value is changed or the property was previously
unset then the signal #DbusmenuMenuitem::prop-changed will be
emitted by this function.
Return value: A boolean representing if the property value was set.
*/
gboolean
dbusmenu_menuitem_property_set_int (DbusmenuMenuitem * mi, const gchar * property, const gint value)
{
GValue val = {0};
g_value_init(&val, G_TYPE_INT);
g_value_set_int(&val, value);
return dbusmenu_menuitem_property_set_value(mi, property, &val);
}
/**
dbusmenu_menuitem_property_set:
@mi: The #DbusmenuMenuitem to set the property on.
@property: Name of the property to set.
@value: The value of the property.
Takes the pair of @property and @value and places them as a
property on @mi. If a property already exists by that name,
then the value is set to the new value. If not, the property
is added. If the value is changed or the property was previously
unset then the signal #DbusmenuMenuitem::prop-changed will be
emitted by this function.
Return value: A boolean representing if the property value was set.
*/
gboolean
dbusmenu_menuitem_property_set_value (DbusmenuMenuitem * mi, const gchar * property, const GValue * value)
{
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(mi), FALSE);
g_return_val_if_fail(property != NULL, FALSE);
g_return_val_if_fail(G_IS_VALUE(value), FALSE);
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(mi);
/* g_debug("Setting a property. ID: %d Prop: %s Value: %s", priv->id, property, value); */
#if 0
gpointer lookup = g_hash_table_lookup(priv->properties, property);
if (g_strcmp0((gchar *)lookup, value) == 0) {
/* The value is the same as the value currently in the
table so we don't really care. Just say everything's okay */
return TRUE;
}
#endif
gchar * lprop = g_strdup(property);
GValue * lval = g_new0(GValue, 1);
g_value_init(lval, G_VALUE_TYPE(value));
g_value_copy(value, lval);
g_hash_table_replace(priv->properties, lprop, lval);
#ifdef MASSIVEDEBUGGING
gchar * valstr = g_strdup_value_contents(lval);
g_debug("Menuitem %d (%s) signalling property '%s' changed to '%s'", ID(mi), LABEL(mi), property, g_utf8_strlen(valstr, 50) < 25 ? valstr : "<too long>");
g_free(valstr);
#endif
g_signal_emit(G_OBJECT(mi), signals[PROPERTY_CHANGED], 0, lprop, lval, TRUE);
return TRUE;
}
/**
dbusmenu_menuitem_property_get:
@mi: The #DbusmenuMenuitem to look for the property on.
@property: The property to grab.
Look up a property on @mi and return the value of it if
it exits. #NULL will be returned if the property doesn't
exist.
Return value: A string with the value of the property
that shouldn't be free'd. Or #NULL if the property
is not set or is not a string.
*/
const gchar *
dbusmenu_menuitem_property_get (DbusmenuMenuitem * mi, const gchar * property)
{
const GValue * value = dbusmenu_menuitem_property_get_value(mi, property);
if (value == NULL) return NULL;
if (G_VALUE_TYPE(value) != G_TYPE_STRING) return NULL;
return g_value_get_string(value);
}
/**
dbusmenu_menuitem_property_get_value:
@mi: The #DbusmenuMenuitem to look for the property on.
@property: The property to grab.
Look up a property on @mi and return the value of it if
it exits. #NULL will be returned if the property doesn't
exist.
Return value: A GValue for the property.
*/
const GValue *
dbusmenu_menuitem_property_get_value (DbusmenuMenuitem * mi, const gchar * property)
{
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(mi), NULL);
g_return_val_if_fail(property != NULL, NULL);
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(mi);
return (const GValue *)g_hash_table_lookup(priv->properties, property);
}
/**
dbusmenu_menuitem_property_get_bool:
@mi: The #DbusmenuMenuitem to look for the property on.
@property: The property to grab.
Look up a property on @mi and return the value of it if
it exits. Returns #FALSE if the property doesn't exist.
Return value: The value of the property or #FALSE.
*/
gboolean
dbusmenu_menuitem_property_get_bool (DbusmenuMenuitem * mi, const gchar * property)
{
const GValue * value = dbusmenu_menuitem_property_get_value(mi, property);
if (value == NULL) return FALSE;
if (G_VALUE_TYPE(value) != G_TYPE_BOOLEAN) {
if (g_value_type_transformable(G_VALUE_TYPE(value), G_TYPE_BOOLEAN)) {
GValue boolval = {0};
g_value_init(&boolval, G_TYPE_BOOLEAN);
g_value_transform(value, &boolval);
return g_value_get_boolean(&boolval);
} else {
return FALSE;
}
}
return g_value_get_boolean(value);
}
/**
dbusmenu_menuitem_property_get_int:
@mi: The #DbusmenuMenuitem to look for the property on.
@property: The property to grab.
Look up a property on @mi and return the value of it if
it exits. Returns zero if the property doesn't exist.
Return value: The value of the property or zero.
*/
gint
dbusmenu_menuitem_property_get_int (DbusmenuMenuitem * mi, const gchar * property)
{
const GValue * value = dbusmenu_menuitem_property_get_value(mi, property);
if (value == NULL) return 0;
if (G_VALUE_TYPE(value) != G_TYPE_INT) {
if (g_value_type_transformable(G_VALUE_TYPE(value), G_TYPE_INT)) {
GValue intval = {0};
g_value_init(&intval, G_TYPE_INT);
g_value_transform(value, &intval);
return g_value_get_int(&intval);
} else {
return 0;
}
}
return g_value_get_int(value);
}
/**
dbusmenu_menuitem_property_exit:
@mi: The #DbusmenuMenuitem to look for the property on.
@property: The property to look for.
Checkes to see if a particular property exists on @mi and
returns #TRUE if so.
Return value: A boolean checking to see if the property is available
*/
gboolean
dbusmenu_menuitem_property_exist (DbusmenuMenuitem * mi, const gchar * property)
{
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(mi), FALSE);
g_return_val_if_fail(property != NULL, FALSE);
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(mi);
gpointer value = g_hash_table_lookup(priv->properties, property);
return value != NULL;
}
/**
dbusmenu_menuitem_property_remove:
@mi: The #DbusmenuMenuitem to remove the property on.
@property: The property to look for.
Removes a property from the menuitem.
*/
void
dbusmenu_menuitem_property_remove (DbusmenuMenuitem * mi, const gchar * property)
{
g_return_if_fail(DBUSMENU_IS_MENUITEM(mi));
g_return_if_fail(property != NULL);
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(mi);
g_hash_table_remove(priv->properties, property);
return;
}
/**
dbusmenu_menuitem_properties_list:
@mi: #DbusmenuMenuitem to list the properties on
This functiong gets a list of the names of all the properties
that are set on this menu item. This data on the list is owned
by the menuitem but the list is not and should be freed using
g_list_free() when the calling function is done with it.
Return value: A list of strings or NULL if there are none.
*/
GList *
dbusmenu_menuitem_properties_list (DbusmenuMenuitem * mi)
{
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(mi), NULL);
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(mi);
return g_hash_table_get_keys(priv->properties);
}
static void
copy_helper (gpointer in_key, gpointer in_value, gpointer in_data)
{
GHashTable * table = (GHashTable *)in_data;
g_hash_table_insert(table, in_key, in_value);
return;
}
/**
dbusmenu_menuitem_properties_copy:
@mi: #DbusmenuMenuitem that we're interested in the properties of
This function takes the properties of a #DbusmenuMenuitem
and puts them into a #GHashTable that is referenced by the
key of a string and has the value of a string. The hash
table may not have any entries if there aren't any or there
is an error in processing. It is the caller's responsibility
to destroy the created #GHashTable.
Return value: A brand new #GHashTable that contains all of the
properties that are on this #DbusmenuMenuitem @mi.
*/
GHashTable *
dbusmenu_menuitem_properties_copy (DbusmenuMenuitem * mi)
{
GHashTable * ret = g_hash_table_new(g_str_hash, g_str_equal);
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(mi), ret);
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(mi);
g_hash_table_foreach(priv->properties, copy_helper, ret);
return ret;
}
/**
dbusmenu_menuitem_set_root:
@mi: #DbusmenuMenuitem to set whether it's root
@root: Whether @mi is a root node or not
This function sets the internal value of whether this is a
root node or not.
Return value: None
*/
void
dbusmenu_menuitem_set_root (DbusmenuMenuitem * mi, gboolean root)
{
g_return_if_fail(DBUSMENU_IS_MENUITEM(mi));
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(mi);
priv->root = root;
return;
}
/**
dbusmenu_menuitem_get_root:
@mi: #DbusmenuMenuitem to see whether it's root
This function returns the internal value of whether this is a
root node or not.
Return value: #TRUE if this is a root node
*/
gboolean
dbusmenu_menuitem_get_root (DbusmenuMenuitem * mi)
{
g_return_val_if_fail(DBUSMENU_IS_MENUITEM(mi), FALSE);
DbusmenuMenuitemPrivate * priv = DBUSMENU_MENUITEM_GET_PRIVATE(mi);
return priv->root;
}
/**
dbusmenu_menuitem_buildxml:
@mi: #DbusmenuMenuitem to represent in XML
@array: A list of string that will be turned into an XML file
This function will add strings to the array @array. It will put
at least one entry if this menu item has no children. If it has
children it will put two for this entry, one representing the
start tag and one that is a closing tag. It will allow it's
children to place their own tags in the array in between those two.
*/
void
dbusmenu_menuitem_buildxml (DbusmenuMenuitem * mi, GPtrArray * array)
{
g_return_if_fail(DBUSMENU_IS_MENUITEM(mi));
gint id = 0;
if (!dbusmenu_menuitem_get_root(mi)) {
id = dbusmenu_menuitem_get_id(mi);
}
GList * children = dbusmenu_menuitem_get_children(mi);
if (children == NULL) {
g_ptr_array_add(array, g_strdup_printf("<menu id=\"%d\"/>", id));
} else {
g_ptr_array_add(array, g_strdup_printf("<menu id=\"%d\">", id));
for ( ; children != NULL; children = children->next) {
dbusmenu_menuitem_buildxml(DBUSMENU_MENUITEM(children->data), array);
}
g_ptr_array_add(array, g_strdup("</menu>"));
}
return;
}
typedef struct {
void (*func) (DbusmenuMenuitem * mi, gpointer data);
gpointer data;
} foreach_struct_t;
static void
foreach_helper (gpointer data, gpointer user_data)
{
dbusmenu_menuitem_foreach(DBUSMENU_MENUITEM(data), ((foreach_struct_t *)user_data)->func, ((foreach_struct_t *)user_data)->data);
return;
}
/**
dbusmenu_menuitem_foreach:
@mi: The #DbusmenItem to start from
@func: Function to call on every node in the tree
@data: User data to pass to the function
This calls the function @func on this menu item and all
of the children of this item. And their children. And
their children. And... you get the point. It will get
called on the whole tree.
*/
void
dbusmenu_menuitem_foreach (DbusmenuMenuitem * mi, void (*func) (DbusmenuMenuitem * mi, gpointer data), gpointer data)
{
g_return_if_fail(DBUSMENU_IS_MENUITEM(mi));
g_return_if_fail(func != NULL);
func(mi, data);
GList * children = dbusmenu_menuitem_get_children(mi);
foreach_struct_t foreach_data = {func: func, data: data};
g_list_foreach(children, foreach_helper, &foreach_data);
return;
}
/**
dbusmenu_menuitem_handle_event:
@mi: The #DbusmenuMenuitem to send the signal on.
@name: The name of the signal
@value: A value that could be set for the event
@timestamp: The timestamp of when the event happened
This function is called to create an event. It is likely
to be overrided by subclasses. The default menu item
will respond to the activate signal and do:
Emits the #DbusmenuMenuitem::item-activate signal on this
menu item. Called by server objects when they get the
appropriate DBus signals from the client.
If you subclass this function you should really think
about calling the parent function unless you have a good
reason not to.
*/
void
dbusmenu_menuitem_handle_event (DbusmenuMenuitem * mi, const gchar * name, const GValue * value, guint timestamp)
{
g_return_if_fail(DBUSMENU_IS_MENUITEM(mi));
#ifdef MASSIVEDEBUGGING
g_debug("Menuitem %d (%s) is getting event '%s'", ID(mi), LABEL(mi), name);
#endif
DbusmenuMenuitemClass * class = DBUSMENU_MENUITEM_GET_CLASS(mi);
if (class->handle_event != NULL) {
return class->handle_event(mi, name, value, timestamp);
}
return;
}
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