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|
/*
An object to represent loadable indicator modules to make loading
them easy and objectified.
Copyright 2009 Canonical Ltd.
Authors:
Ted Gould <ted@canonical.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
version 3.0 as published by the Free Software Foundation.
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 General Public License version 3.0 for more details.
You should have received a copy of the GNU General Public
License along with this library. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "indicator.h"
#include "indicator-object.h"
#include "indicator-object-marshal.h"
#include "indicator-object-enum-types.h"
/**
@ENTRY_INIT: The entry hasn't been initialized yet, so its
visibility will depend upon the inital-visibility property.
@ENTRY_VISIBLE: The entry is visible
@ENTRY_INVISIBLE: The entry is invisible
*/
typedef enum {
ENTRY_INIT,
ENTRY_VISIBLE,
ENTRY_INVISIBLE
}
EntryVisibility;
typedef struct _IndicatorObjectEntryPrivate {
EntryVisibility visibility;
}
IndicatorObjectEntryPrivate;
/**
IndicatorObjectPrivate:
@module: The loaded module representing the object. Note to
subclasses: This will not be set when you're initalized.
@entry: A default entry for objects that don't need all the
fancy stuff. This works with #get_entries_default.
@gotten_entries: A check to see if the @entry has been
populated intelligently yet.
Structure to define the memory for the private area
of the object instance.
*/
struct _IndicatorObjectPrivate {
GModule * module;
/* For get_entries_default */
IndicatorObjectEntry entry;
gboolean gotten_entries;
/* Whether or not entries are visible by default */
gboolean default_visibility;
GHashTable * entry_privates;
GStrv environments;
};
#define INDICATOR_OBJECT_GET_PRIVATE(o) (INDICATOR_OBJECT(o)->priv)
/* Signals Stuff */
enum {
ENTRY_ADDED,
ENTRY_REMOVED,
ENTRY_MOVED,
ENTRY_SCROLLED,
MENU_SHOW,
SHOW_NOW_CHANGED,
ACCESSIBLE_DESC_UPDATE,
SECONDARY_ACTIVATE,
LAST_SIGNAL
};
/* Properties */
/* Enum for the properties so that they can be quickly
found and looked up. */
enum {
PROP_0,
PROP_GSETTINGS_SCHEMA_ID,
PROP_DEFAULT_VISIBILITY,
};
static guint signals[LAST_SIGNAL] = { 0 };
/* GObject stuff */
static void indicator_object_class_init (IndicatorObjectClass *klass);
static void indicator_object_init (IndicatorObject *self);
static void indicator_object_dispose (GObject *object);
static void indicator_object_finalize (GObject *object);
static void set_property (GObject*, guint prop_id, const GValue*, GParamSpec* );
static void get_property (GObject*, guint prop_id, GValue*, GParamSpec* );
/* entries' visibility */
static GList * get_entries_default (IndicatorObject*);
static GList * get_all_entries (IndicatorObject*);
static void entry_being_removed_default (IndicatorObject*, IndicatorObjectEntry*);
static void indicator_object_entry_being_removed (IndicatorObject*, IndicatorObjectEntry*);
static void entry_was_added_default (IndicatorObject*, IndicatorObjectEntry*);
static void indicator_object_entry_was_added (IndicatorObject*, IndicatorObjectEntry*);
static IndicatorObjectEntryPrivate * entry_get_private (IndicatorObject*, IndicatorObjectEntry*);
G_DEFINE_TYPE (IndicatorObject, indicator_object, G_TYPE_OBJECT);
/* Setup the class and put the functions into the
class structure */
static void
indicator_object_class_init (IndicatorObjectClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (IndicatorObjectPrivate));
object_class->dispose = indicator_object_dispose;
object_class->finalize = indicator_object_finalize;
object_class->set_property = set_property;
object_class->get_property = get_property;
klass->get_label = NULL;
klass->get_menu = NULL;
klass->get_image = NULL;
klass->get_accessible_desc = NULL;
klass->get_entries = get_entries_default;
klass->get_location = NULL;
klass->entry_being_removed = entry_being_removed_default;
klass->entry_was_added = entry_was_added_default;
klass->entry_activate = NULL;
klass->entry_activate_window = NULL;
klass->entry_close = NULL;
/**
IndicatorObject::entry-added:
@arg0: The #IndicatorObject object
@arg1: A pointer to the #IndicatorObjectEntry that
is being added.
Signaled when a new entry is added and should
be shown by the person using this object.
*/
signals[ENTRY_ADDED] = g_signal_new (INDICATOR_OBJECT_SIGNAL_ENTRY_ADDED,
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (IndicatorObjectClass, entry_added),
NULL, NULL,
g_cclosure_marshal_VOID__POINTER,
G_TYPE_NONE, 1, G_TYPE_POINTER, G_TYPE_NONE);
/**
IndicatorObject::entry-removed:
@arg0: The #IndicatorObject object
@arg1: A pointer to the #IndicatorObjectEntry that
is being removed.
Signaled when an entry is removed and should
be removed by the person using this object.
*/
signals[ENTRY_REMOVED] = g_signal_new (INDICATOR_OBJECT_SIGNAL_ENTRY_REMOVED,
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (IndicatorObjectClass, entry_removed),
NULL, NULL,
g_cclosure_marshal_VOID__POINTER,
G_TYPE_NONE, 1, G_TYPE_POINTER, G_TYPE_NONE);
/**
IndicatorObject::entry-moved:
@arg0: The #IndicatorObject object
@arg1: A pointer to the #IndicatorObjectEntry that
is being moved.
@arg2: The old location of the entry
@arg3: The new location of the entry
When the order of the entries change, then this signal
is sent to tell the new location.
*/
signals[ENTRY_MOVED] = g_signal_new (INDICATOR_OBJECT_SIGNAL_ENTRY_MOVED,
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (IndicatorObjectClass, entry_moved),
NULL, NULL,
_indicator_object_marshal_VOID__POINTER_UINT_UINT,
G_TYPE_NONE, 3, G_TYPE_POINTER, G_TYPE_UINT, G_TYPE_UINT, G_TYPE_NONE);
/**
IndicatorObject::entry-scrolled:
@arg0: The #IndicatorObject object
@arg1: A pointer to the #IndicatorObjectEntry that
receives the scroll event.
@arg2: The delta of the scroll event
@arg3: The orientation of the scroll event.
When the indicator receives a mouse scroll wheel event
from the user, this signal is emitted.
*/
signals[ENTRY_SCROLLED] = g_signal_new (INDICATOR_OBJECT_SIGNAL_ENTRY_SCROLLED,
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (IndicatorObjectClass, entry_scrolled),
NULL, NULL,
_indicator_object_marshal_VOID__POINTER_UINT_ENUM,
G_TYPE_NONE, 3, G_TYPE_POINTER, G_TYPE_UINT,
INDICATOR_OBJECT_TYPE_SCROLL_DIRECTION);
/**
IndicatorObject::secondary-activate:
@arg0: The #IndicatorObject object
@arg1: A pointer to the #IndicatorObjectEntry that
receives the secondary activate event.
@arg2: The timestamp of the event
When the indicator receives a secondary activation event
from the user, this signal is emitted.
*/
signals[SECONDARY_ACTIVATE] = g_signal_new (INDICATOR_OBJECT_SIGNAL_SECONDARY_ACTIVATE,
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (IndicatorObjectClass, secondary_activate),
NULL, NULL,
_indicator_object_marshal_VOID__POINTER_UINT,
G_TYPE_NONE, 2, G_TYPE_POINTER, G_TYPE_UINT);
/**
IndicatorObject::menu-show:
@arg0: The #IndicatorObject object
@arg1: A pointer to the #IndicatorObjectEntry that
is being shown.
@arg2: The timestamp of the event
Used when the indicator wants to signal up the stack
that the menu should be shown.
*/
signals[MENU_SHOW] = g_signal_new (INDICATOR_OBJECT_SIGNAL_MENU_SHOW,
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (IndicatorObjectClass, menu_show),
NULL, NULL,
_indicator_object_marshal_VOID__POINTER_UINT,
G_TYPE_NONE, 2, G_TYPE_POINTER, G_TYPE_UINT);
/**
IndicatorObject::show-now-changed:
@arg0: The #IndicatorObject object
@arg1: A pointer to the #IndicatorObjectEntry that
is changing it's state
@arg2: The state of whether the entry should be shown
Whether the entry should be shown or not has changed so we need
to tell whoever is displaying it.
*/
signals[SHOW_NOW_CHANGED] = g_signal_new (INDICATOR_OBJECT_SIGNAL_SHOW_NOW_CHANGED,
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (IndicatorObjectClass, show_now_changed),
NULL, NULL,
_indicator_object_marshal_VOID__POINTER_BOOLEAN,
G_TYPE_NONE, 2, G_TYPE_POINTER, G_TYPE_BOOLEAN);
/**
IndicatorObject::accessible-desc-update::
@arg0: The #IndicatorObject object
@arg1: A pointer to the #IndicatorObjectEntry whos
accessible description has been updated.
Signaled when an indicator's accessible description
has been updated, so that the displayer of the
indicator can fetch the new description.
*/
signals[ACCESSIBLE_DESC_UPDATE] = g_signal_new (INDICATOR_OBJECT_SIGNAL_ACCESSIBLE_DESC_UPDATE,
G_TYPE_FROM_CLASS(klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (IndicatorObjectClass, accessible_desc_update),
NULL, NULL,
g_cclosure_marshal_VOID__POINTER,
G_TYPE_NONE, 1, G_TYPE_POINTER, G_TYPE_NONE);
/* Properties */
GParamSpec * pspec = g_param_spec_boolean (INDICATOR_OBJECT_DEFAULT_VISIBILITY,
"default visibility",
"Whether or not entries should initially be visible.",
TRUE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (object_class, PROP_DEFAULT_VISIBILITY, pspec);
}
/* Initialize an instance */
static void
indicator_object_init (IndicatorObject *self)
{
IndicatorObjectPrivate * priv = G_TYPE_INSTANCE_GET_PRIVATE (self, INDICATOR_OBJECT_TYPE, IndicatorObjectPrivate);
priv->module = NULL;
priv->entry.menu = NULL;
priv->entry.label = NULL;
priv->entry.image = NULL;
priv->entry.accessible_desc = NULL;
priv->entry.name_hint = NULL;
priv->gotten_entries = FALSE;
priv->default_visibility = TRUE;
priv->entry_privates = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, g_free);
priv->environments = NULL;
self->priv = priv;
GObject * o = G_OBJECT(self);
/* Invoke the entry-being-removed virtual function first */
g_signal_connect (o, INDICATOR_OBJECT_SIGNAL_ENTRY_REMOVED,
G_CALLBACK(indicator_object_entry_being_removed), NULL);
/* Invoke the entry-was-added virtual function last */
g_signal_connect_after (o, INDICATOR_OBJECT_SIGNAL_ENTRY_ADDED,
G_CALLBACK(indicator_object_entry_was_added), NULL);
}
/* Unref the objects that we're holding on to. */
static void
indicator_object_dispose (GObject *object)
{
IndicatorObject * io = INDICATOR_OBJECT(object);
/* Ensure that hidden entries are re-added so their widgetry will
be cleaned up properly by the client */
GList * l;
GList * entries = get_all_entries (io);
const GQuark detail = (GQuark)0;
for (l=entries; l!=NULL; l=l->next) {
IndicatorObjectEntry * entry = l->data;
if (entry_get_private(io, entry)->visibility == ENTRY_INVISIBLE) {
g_signal_emit(io, signals[ENTRY_ADDED], detail, entry);
}
}
g_list_free (entries);
G_OBJECT_CLASS (indicator_object_parent_class)->dispose (object);
}
/* A small helper function that closes a module but
in the function prototype of a GSourceFunc. */
static gboolean
module_unref (gpointer data)
{
if (!g_module_close((GModule *)data)) {
/* All we can do is warn. */
g_warning("Unable to close module!");
}
return FALSE;
}
/* Free memory */
static void
indicator_object_finalize (GObject *object)
{
IndicatorObjectPrivate * priv = INDICATOR_OBJECT_GET_PRIVATE(object);
if (priv->entry_privates != NULL) {
g_hash_table_destroy (priv->entry_privates);
priv->entry_privates = NULL;
}
if (priv->environments != NULL) {
g_strfreev(priv->environments);
priv->environments = NULL;
}
if (priv->module != NULL) {
/* Wow, this is convoluted. So basically we want to unref
the module which will cause the code it included to be
removed. But, since its finalize function is the function
that called this one, we can't really remove it before
it finishes being executed. So we're putting the job into
the main loop to remove it the next time it gets a chance.
Slightly non-deterministic, but should work. */
g_idle_add(module_unref, priv->module);
priv->module = NULL;
}
G_OBJECT_CLASS (indicator_object_parent_class)->finalize (object);
return;
}
/**
indicator_object_new_from_file:
@file: Filename containing a loadable module
This function builds an #IndicatorObject using the symbols
that are found in @file. The module is loaded and the
references are all kept by the object. To unload the
module the object must be destroyed.
Return value: A valid #IndicatorObject or #NULL if error.
*/
IndicatorObject *
indicator_object_new_from_file (const gchar * file)
{
GObject * object = NULL;
GModule * module = NULL;
/* Check to make sure the name exists and that the
file itself exists */
if (file == NULL) {
g_warning("Invalid filename.");
return NULL;
}
if (!g_file_test(file, G_FILE_TEST_EXISTS)) {
g_warning("File '%s' does not exist.", file);
return NULL;
}
/* Grab the g_module reference, pull it in but let's
keep the symbols local to avoid conflicts. */
module = g_module_open(file,
G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL);
if (module == NULL) {
g_warning("Unable to load module: %s", file);
return NULL;
}
/* Look for the version function, error if not found. */
get_version_t lget_version = NULL;
if (!g_module_symbol(module, INDICATOR_GET_VERSION_S, (gpointer *)(&lget_version))) {
g_warning("Unable to get the symbol for getting the version.");
return NULL;
}
/* Check the version with the macro and make sure we're
all talking the same language. */
if (!INDICATOR_VERSION_CHECK(lget_version())) {
g_warning("Indicator using API version '%s' we're expecting '%s'", lget_version(), INDICATOR_VERSION);
return NULL;
}
/* The function for grabbing a label from the module
execute it, and make sure everything is a-okay */
get_type_t lget_type = NULL;
if (!g_module_symbol(module, INDICATOR_GET_TYPE_S, (gpointer *)(&lget_type))) {
g_warning("Unable to get '" INDICATOR_GET_TYPE_S "' symbol from module: %s", file);
goto unrefandout;
}
if (lget_type == NULL) {
g_warning("Symbol '" INDICATOR_GET_TYPE_S "' is (null) in module: %s", file);
goto unrefandout;
}
/* A this point we allocate the object, any code beyond
here needs to deallocate it if we're returning in an
error'd state. */
object = g_object_new(lget_type(), NULL);
if (object == NULL) {
g_warning("Unable to build an object if type '%d' in module: %s", (gint)lget_type(), file);
goto unrefandout;
}
if (!INDICATOR_IS_OBJECT(object)) {
g_warning("Type '%d' in file %s is not a subclass of IndicatorObject.", (gint)lget_type(), file);
goto unrefandout;
}
IndicatorObjectPrivate * priv = INDICATOR_OBJECT_GET_PRIVATE(object);
/* Now we can track the module */
priv->module = module;
return INDICATOR_OBJECT(object);
/* Error, let's drop the object and return NULL. Sad when
this happens. */
unrefandout:
if (object != NULL) {
g_object_unref(object);
}
if (module != NULL) {
g_object_unref(module);
}
g_warning("Error building IndicatorObject from file: %s", file);
return NULL;
}
/* The default get entries function uses the other single
entries in the class to create an entry structure and
put it into a list. This makes it simple for simple objects
to create the list. Small changes from the way they
previously were. */
static GList *
get_entries_default (IndicatorObject * io)
{
IndicatorObjectPrivate * priv = INDICATOR_OBJECT_GET_PRIVATE(io);
if (!priv->gotten_entries) {
IndicatorObjectClass * class = INDICATOR_OBJECT_GET_CLASS(io);
if (class->get_label) {
priv->entry.label = class->get_label(io);
}
if (class->get_image) {
priv->entry.image = class->get_image(io);
}
if (priv->entry.image == NULL && priv->entry.label == NULL) {
g_warning("IndicatorObject class does not create an image or a label. We need one of those.");
return NULL;
}
if (class->get_menu) {
priv->entry.menu = class->get_menu(io);
}
if (priv->entry.menu == NULL) {
g_warning("IndicatorObject class does not create a menu. We need one of those.");
return NULL;
}
if (class->get_accessible_desc) {
priv->entry.accessible_desc = class->get_accessible_desc(io);
}
if (priv->entry.accessible_desc == NULL) {
g_warning("IndicatorObject class does not have an accessible description.");
}
if (class->get_name_hint) {
priv->entry.name_hint = class->get_name_hint(io);
}
priv->gotten_entries = TRUE;
}
return g_list_append(NULL, &(priv->entry));
}
/* returns a list of all IndicatorObjectEntires, visible or not */
static GList*
get_all_entries (IndicatorObject * io)
{
GList * all_entries = NULL;
g_return_val_if_fail(INDICATOR_IS_OBJECT(io), NULL);
IndicatorObjectClass * class = INDICATOR_OBJECT_GET_CLASS(io);
if (class->get_entries == NULL)
g_error("No get_entries function on object. It must have been deleted?!?!");
else
all_entries = class->get_entries(io);
return all_entries;
}
/* get the private structure that corresponds to a caller-specified entry */
static IndicatorObjectEntryPrivate *
entry_get_private (IndicatorObject * io, IndicatorObjectEntry * entry)
{
g_return_val_if_fail (INDICATOR_IS_OBJECT(io), NULL);
g_return_val_if_fail (io->priv != NULL, NULL);
GHashTable * h = io->priv->entry_privates;
IndicatorObjectEntryPrivate * priv = g_hash_table_lookup (h, entry);
if (priv == NULL)
{
priv = g_new0 (IndicatorObjectEntryPrivate, 1);
priv->visibility = ENTRY_INIT;
g_hash_table_insert (h, entry, priv);
}
return priv;
}
/**
indicator_object_get_entries:
@io: #IndicatorObject to query
This function returns a list of visible entries. The list is built
by calling the object's #IndicatorObjectClass::get_entries
virtual function and testing each of the results for visibility.
Callers should free the GList with g_list_free(), but the entries
are owned by the IndicatorObject and should not be freed.
Return value: (element-type IndicatorObjectEntry) (transfer container):
A list if #IndicatorObjectEntry structures or NULL on error.
*/
GList *
indicator_object_get_entries (IndicatorObject * io)
{
GList * l;
GList * ret = NULL;
GList * all_entries = get_all_entries (io);
const gboolean default_visibility = INDICATOR_OBJECT_GET_PRIVATE(io)->default_visibility;
for (l=all_entries; l!=NULL; l=l->next)
{
gboolean show_me;
IndicatorObjectEntry * entry = l->data;
switch (entry_get_private(io,entry)->visibility) {
case ENTRY_VISIBLE: show_me = TRUE; break;
case ENTRY_INVISIBLE: show_me = FALSE; break;
case ENTRY_INIT: show_me = default_visibility; break;
default: show_me = TRUE; g_warn_if_reached(); break;
}
if (show_me)
ret = g_list_prepend (ret, entry);
}
g_list_free (all_entries);
return g_list_reverse (ret);
}
/**
indicator_object_get_location:
@io: #IndicatorObject to query
@entry: The #IndicatorObjectEntry to look for.
This function looks on the class for the object and calls
it's #IndicatorObjectClass::get_location function. If the
function doesn't exist it returns zero.
Return value: Location of the @entry in the display or
zero if no location is specified.
*/
guint
indicator_object_get_location (IndicatorObject * io, IndicatorObjectEntry * entry)
{
g_return_val_if_fail(INDICATOR_IS_OBJECT(io), 0);
IndicatorObjectClass * class = INDICATOR_OBJECT_GET_CLASS(io);
if (class->get_location) {
return class->get_location(io, entry);
}
return 0;
}
/**
indicator_object_get_show_now:
@io: #IndicatorObject to query
@entry: The #IndicatorObjectEntry to look for.
This function returns whether the entry should be shown with
priority on the panel. If the object does not support checking
it assumes that its entries should never have priority.
Return value: Whether the entry should be shown with priority.
*/
guint
indicator_object_get_show_now (IndicatorObject * io, IndicatorObjectEntry * entry)
{
g_return_val_if_fail(INDICATOR_IS_OBJECT(io), 0);
IndicatorObjectClass * class = INDICATOR_OBJECT_GET_CLASS(io);
if (class->get_show_now) {
return class->get_show_now(io, entry);
}
return FALSE;
}
/**
indicator_object_entry_activate_window:
@io: #IndicatorObject to query
@entry: The #IndicatorObjectEntry whose entry was shown
@windowid: ID of the window that is currently focused (or will
be very shortly)
@timestamp: The X11 timestamp of the event
Used to signal to the indicator that the menu on an entry has
been clicked on. This can either be an activate or a showing
of the menu. Also includes a window ID so that we can know what
application is going to be getting focused soon. If there is
no override of this function, it is the same as calling
indicator_object_entry_activate and in general is preferable
if you have that information available.
*/
void
indicator_object_entry_activate_window (IndicatorObject * io, IndicatorObjectEntry * entry, guint windowid, guint timestamp)
{
g_return_if_fail(INDICATOR_IS_OBJECT(io));
IndicatorObjectClass * class = INDICATOR_OBJECT_GET_CLASS(io);
if (class->entry_activate_window != NULL) {
return class->entry_activate_window(io, entry, windowid, timestamp);
} else {
indicator_object_entry_activate(io, entry, timestamp);
}
return;
}
/**
indicator_object_entry_activate:
@io: #IndicatorObject to query
@entry: The #IndicatorObjectEntry whose entry was shown
@timestamp: The X11 timestamp of the event
Used to signal to the indicator that the menu on an entry has
been clicked on. This can either be an activate or a showing
of the menu. Note, this does not actually show the menu that's
left up to the reader.
*/
void
indicator_object_entry_activate (IndicatorObject * io, IndicatorObjectEntry * entry, guint timestamp)
{
g_return_if_fail(INDICATOR_IS_OBJECT(io));
IndicatorObjectClass * class = INDICATOR_OBJECT_GET_CLASS(io);
if (class->entry_activate != NULL) {
return class->entry_activate(io, entry, timestamp);
}
return;
}
/**
indicator_object_entry_close:
@io: #IndicatorObject to query
@entry: The #IndicatorObjectEntry whose menu was closed
@timestamp: The X11 timestamp of the event
Used to tell the indicator that a menu has been closed for the
entry that is specified.
*/
void
indicator_object_entry_close (IndicatorObject * io, IndicatorObjectEntry * entry, guint timestamp)
{
g_return_if_fail(INDICATOR_IS_OBJECT(io));
IndicatorObjectClass * class = INDICATOR_OBJECT_GET_CLASS(io);
if (class->entry_close != NULL) {
return class->entry_close(io, entry, timestamp);
}
return;
}
static void
indicator_object_entry_being_removed (IndicatorObject * io, IndicatorObjectEntry * entry)
{
g_return_if_fail(INDICATOR_IS_OBJECT(io));
IndicatorObjectClass * class = INDICATOR_OBJECT_GET_CLASS(io);
entry_get_private (io, entry)->visibility = ENTRY_INVISIBLE;
if (class->entry_being_removed != NULL)
class->entry_being_removed (io, entry);
}
static void
indicator_object_entry_was_added (IndicatorObject * io, IndicatorObjectEntry * entry)
{
g_return_if_fail(INDICATOR_IS_OBJECT(io));
IndicatorObjectClass * class = INDICATOR_OBJECT_GET_CLASS(io);
entry_get_private (io, entry)->visibility = ENTRY_VISIBLE;
if (class->entry_was_added != NULL)
class->entry_was_added (io, entry);
}
/**
indicator_object_set_environment:
@io: #IndicatorObject to set on
@env: List of enviroment names to use
Sets the names of the environment that the indicator is being
loaded into. This allows for indicators to behave differently
in different hosts if need be.
*/
void
indicator_object_set_environment (IndicatorObject * io, const GStrv env)
{
/* FIXME: should this be a property? */
g_return_if_fail(INDICATOR_IS_OBJECT(io));
if (io->priv->environments != NULL) {
g_strfreev(io->priv->environments);
io->priv->environments = NULL;
}
io->priv->environments = g_strdupv(env);
return;
}
/**
indicator_object_get_environment:
@io: #IndicatorObject to get the environment from
Gets the list of environment strings that this object is
placed into.
Return value: (transfer none): Gets the list of strings that
represent the environment or NULL if none were given.
*/
const GStrv
indicator_object_get_environment (IndicatorObject * io)
{
g_return_val_if_fail(INDICATOR_IS_OBJECT(io), NULL);
return io->priv->environments;
}
/**
indicator_object_check_environment:
@io: #IndicatorObject to check on
@env: Environment that we're looking for
Convience function to check to see if the specified environment
@env is in our list of environments.
Return Value: Whether we're in environment @env
*/
gboolean
indicator_object_check_environment (IndicatorObject * io, const gchar * env)
{
g_return_val_if_fail(INDICATOR_IS_OBJECT(io), FALSE);
g_return_val_if_fail(env != NULL, FALSE);
if (io->priv->environments == NULL) {
return FALSE;
}
int i;
for (i = 0; io->priv->environments[i] != NULL; i++) {
if (g_strcmp0(env, io->priv->environments[i]) == 0) {
return TRUE;
}
}
return FALSE;
}
/**
indicator_object_set_visible:
@io: #IndicatorObject to check on
@visible: whether or not the entries should be visible
Used to set all of an indicator's entries to be visible or hidden.
*/
void
indicator_object_set_visible (IndicatorObject * io, gboolean visible)
{
g_return_if_fail(INDICATOR_IS_OBJECT(io));
GList * l;
GList * entries = get_all_entries (io);
const guint signal_id = signals[visible ? ENTRY_ADDED : ENTRY_REMOVED];
const GQuark detail = (GQuark)0;
for (l=entries; l!=NULL; l=l->next)
g_signal_emit(io, signal_id, detail, l->data);
g_list_free (entries);
}
static void
get_property (GObject * object,
guint prop_id,
GValue * value,
GParamSpec * pspec)
{
IndicatorObject * self = INDICATOR_OBJECT(object);
g_return_if_fail(self != NULL);
IndicatorObjectPrivate * priv = INDICATOR_OBJECT_GET_PRIVATE(self);
g_return_if_fail(priv != NULL);
switch (prop_id) {
/* *********************** */
case PROP_DEFAULT_VISIBILITY:
if (G_VALUE_HOLDS_BOOLEAN(value)) {
g_value_set_boolean(value, priv->default_visibility);
} else {
g_warning("default-visibility property requires a boolean value.");
}
break;
/* *********************** */
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
set_property (GObject * object,
guint prop_id,
const GValue * value,
GParamSpec * pspec)
{
IndicatorObject * self = INDICATOR_OBJECT(object);
g_return_if_fail (self != NULL);
IndicatorObjectPrivate * priv = INDICATOR_OBJECT_GET_PRIVATE(self);
g_return_if_fail (priv != NULL);
switch (prop_id) {
/* *********************** */
case PROP_DEFAULT_VISIBILITY:
if (G_VALUE_HOLDS_BOOLEAN(value)) {
priv->default_visibility = g_value_get_boolean (value);
} else {
g_warning("default-visibility property requires a boolean value.");
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/***
****
***/
/* Cloaked entries are ones which are hidden but may be re-added later.
They are reffed + unparented so that they'll survive even if the
rest of the widgetry is destroyed */
#define CLOAKED_KEY "entry-is-cloaked"
static void
decloak_widget (gpointer w)
{
if (w != NULL) {
GObject * o = G_OBJECT(w);
if (g_object_steal_data (o, CLOAKED_KEY) != NULL) {
g_object_unref (o);
}
}
}
static void
entry_was_added_default (IndicatorObject * io, IndicatorObjectEntry * entry)
{
decloak_widget (entry->image);
decloak_widget (entry->label);
decloak_widget (entry->menu);
}
static void
cloak_widget (gpointer w)
{
if (w != NULL) {
GtkWidget * parent;
/* tag this object as cloaked */
GObject * o = G_OBJECT(w);
g_object_ref (o);
g_object_set_data (o, CLOAKED_KEY, GINT_TO_POINTER(1));
/* remove it from its surrounding widgetry */
if(GTK_IS_MENU(w)) {
if (gtk_menu_get_attach_widget (GTK_MENU(w)) != NULL) {
gtk_menu_detach (GTK_MENU(w));
}
}
else if((parent = gtk_widget_get_parent(w))) {
gtk_container_remove(GTK_CONTAINER(parent), w);
}
}
}
static void
entry_being_removed_default (IndicatorObject * io, IndicatorObjectEntry * entry)
{
cloak_widget (entry->image);
cloak_widget (entry->label);
cloak_widget (entry->menu);
}
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