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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*-
nautilus-desktop-directory.c: Subclass of NautilusDirectory to implement
a virtual directory consisting of the desktop directory and the desktop
icons
Copyright (C) 2003 Red Hat, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program 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 for more details.
You should have received a copy of the GNU General Public
License along with this program; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
Author: Alexander Larsson <alexl@redhat.com>
*/
#include <config.h>
#include "nautilus-desktop-directory.h"
#include "nautilus-directory-private.h"
#include "nautilus-file.h"
#include "nautilus-file-private.h"
#include "nautilus-file-utilities.h"
#include "nautilus-global-preferences.h"
#include <eel/eel-glib-extensions.h>
#include <libgnomevfs/gnome-vfs-utils.h>
#include <gtk/gtkmain.h>
#include <gtk/gtksignal.h>
#include <libgnome/gnome-macros.h>
struct NautilusDesktopDirectoryDetails {
NautilusDirectory *real_directory;
GHashTable *callbacks;
GHashTable *monitors;
};
typedef struct {
NautilusDesktopDirectory *desktop_dir;
NautilusDirectoryCallback callback;
gpointer callback_data;
NautilusFileAttributes wait_for_attributes;
gboolean wait_for_file_list;
GList *non_ready_directories;
GList *merged_file_list;
} MergedCallback;
typedef struct {
NautilusDesktopDirectory *desktop_dir;
gboolean monitor_hidden_files;
gboolean monitor_backup_files;
NautilusFileAttributes monitor_attributes;
} MergedMonitor;
static void desktop_directory_changed_callback (gpointer data);
GNOME_CLASS_BOILERPLATE (NautilusDesktopDirectory, nautilus_desktop_directory,
NautilusDirectory, NAUTILUS_TYPE_DIRECTORY)
static gboolean
desktop_contains_file (NautilusDirectory *directory,
NautilusFile *file)
{
NautilusDesktopDirectory *desktop;
desktop = NAUTILUS_DESKTOP_DIRECTORY (directory);
if (nautilus_directory_contains_file (desktop->details->real_directory, file)) {
return TRUE;
}
return file->details->directory == directory;
}
static guint
merged_callback_hash (gconstpointer merged_callback_as_pointer)
{
const MergedCallback *merged_callback;
merged_callback = merged_callback_as_pointer;
return GPOINTER_TO_UINT (merged_callback->callback)
^ GPOINTER_TO_UINT (merged_callback->callback_data);
}
static gboolean
merged_callback_equal (gconstpointer merged_callback_as_pointer,
gconstpointer merged_callback_as_pointer_2)
{
const MergedCallback *merged_callback, *merged_callback_2;
merged_callback = merged_callback_as_pointer;
merged_callback_2 = merged_callback_as_pointer_2;
return merged_callback->callback == merged_callback_2->callback
&& merged_callback->callback_data == merged_callback_2->callback_data;
}
static void
merged_callback_destroy (MergedCallback *merged_callback)
{
g_assert (merged_callback != NULL);
g_assert (NAUTILUS_IS_DESKTOP_DIRECTORY (merged_callback->desktop_dir));
g_list_free (merged_callback->non_ready_directories);
nautilus_file_list_free (merged_callback->merged_file_list);
g_free (merged_callback);
}
static void
merged_callback_check_done (MergedCallback *merged_callback)
{
/* Check if we are ready. */
if (merged_callback->non_ready_directories != NULL) {
return;
}
/* Remove from the hash table before sending it. */
g_hash_table_steal (merged_callback->desktop_dir->details->callbacks, merged_callback);
/* We are ready, so do the real callback. */
(* merged_callback->callback) (NAUTILUS_DIRECTORY (merged_callback->desktop_dir),
merged_callback->merged_file_list,
merged_callback->callback_data);
/* And we are done. */
merged_callback_destroy (merged_callback);
}
static void
merged_callback_remove_directory (MergedCallback *merged_callback,
NautilusDirectory *directory)
{
merged_callback->non_ready_directories = g_list_remove
(merged_callback->non_ready_directories, directory);
merged_callback_check_done (merged_callback);
}
static void
directory_ready_callback (NautilusDirectory *directory,
GList *files,
gpointer callback_data)
{
MergedCallback *merged_callback;
g_assert (NAUTILUS_IS_DIRECTORY (directory));
g_assert (callback_data != NULL);
merged_callback = callback_data;
g_assert (g_list_find (merged_callback->non_ready_directories, directory) != NULL);
/* Update based on this call. */
merged_callback->merged_file_list = g_list_concat
(merged_callback->merged_file_list,
nautilus_file_list_copy (files));
/* Check if we are ready. */
merged_callback_remove_directory (merged_callback, directory);
}
static void
desktop_call_when_ready (NautilusDirectory *directory,
NautilusFileAttributes file_attributes,
gboolean wait_for_file_list,
NautilusDirectoryCallback callback,
gpointer callback_data)
{
NautilusDesktopDirectory *desktop;
MergedCallback search_key, *merged_callback;
desktop = NAUTILUS_DESKTOP_DIRECTORY (directory);
/* Check to be sure we aren't overwriting. */
search_key.callback = callback;
search_key.callback_data = callback_data;
if (g_hash_table_lookup (desktop->details->callbacks, &search_key) != NULL) {
g_warning ("tried to add a new callback while an old one was pending");
return;
}
/* Create a merged_callback record. */
merged_callback = g_new0 (MergedCallback, 1);
merged_callback->desktop_dir = desktop;
merged_callback->callback = callback;
merged_callback->callback_data = callback_data;
merged_callback->wait_for_attributes = file_attributes;
merged_callback->wait_for_file_list = wait_for_file_list;
merged_callback->non_ready_directories = g_list_prepend
(merged_callback->non_ready_directories, directory);
merged_callback->non_ready_directories = g_list_prepend
(merged_callback->non_ready_directories, desktop->details->real_directory);
merged_callback->merged_file_list = g_list_concat (NULL,
nautilus_file_list_copy (directory->details->file_list));
/* Put it in the hash table. */
g_hash_table_insert (desktop->details->callbacks,
merged_callback, merged_callback);
/* Now tell all the directories about it. */
nautilus_directory_call_when_ready
(desktop->details->real_directory,
merged_callback->wait_for_attributes,
merged_callback->wait_for_file_list,
directory_ready_callback, merged_callback);
nautilus_directory_call_when_ready_internal
(directory,
NULL,
merged_callback->wait_for_attributes,
merged_callback->wait_for_file_list,
directory_ready_callback,
NULL,
merged_callback);
}
static void
desktop_cancel_callback (NautilusDirectory *directory,
NautilusDirectoryCallback callback,
gpointer callback_data)
{
NautilusDesktopDirectory *desktop;
MergedCallback search_key, *merged_callback;
GList *node;
desktop = NAUTILUS_DESKTOP_DIRECTORY (directory);
/* Find the entry in the table. */
search_key.callback = callback;
search_key.callback_data = callback_data;
merged_callback = g_hash_table_lookup (desktop->details->callbacks, &search_key);
if (merged_callback == NULL) {
return;
}
/* Remove from the hash table before working with it. */
g_hash_table_steal (merged_callback->desktop_dir->details->callbacks, merged_callback);
/* Tell all the directories to cancel the call. */
for (node = merged_callback->non_ready_directories; node != NULL; node = node->next) {
nautilus_directory_cancel_callback
(node->data,
directory_ready_callback, merged_callback);
}
merged_callback_destroy (merged_callback);
}
static void
merged_monitor_destroy (MergedMonitor *monitor)
{
NautilusDesktopDirectory *desktop;
desktop = monitor->desktop_dir;
/* Call through to the real directory remove calls. */
nautilus_directory_file_monitor_remove (desktop->details->real_directory, monitor);
nautilus_directory_monitor_remove_internal (NAUTILUS_DIRECTORY (desktop), NULL, monitor);
g_free (monitor);
}
static void
build_merged_callback_list (NautilusDirectory *directory,
GList *file_list,
gpointer callback_data)
{
GList **merged_list;
merged_list = callback_data;
*merged_list = g_list_concat (*merged_list,
nautilus_file_list_copy (file_list));
}
static void
desktop_monitor_add (NautilusDirectory *directory,
gconstpointer client,
gboolean monitor_hidden_files,
gboolean monitor_backup_files,
NautilusFileAttributes file_attributes,
NautilusDirectoryCallback callback,
gpointer callback_data)
{
NautilusDesktopDirectory *desktop;
MergedMonitor *monitor;
GList *merged_callback_list;
desktop = NAUTILUS_DESKTOP_DIRECTORY (directory);
/* Map the client to a unique value so this doesn't interfere
* with direct monitoring of the directory by the same client.
*/
monitor = g_hash_table_lookup (desktop->details->monitors, client);
if (monitor != NULL) {
g_assert (monitor->desktop_dir == desktop);
} else {
monitor = g_new0 (MergedMonitor, 1);
monitor->desktop_dir = desktop;
g_hash_table_insert (desktop->details->monitors,
(gpointer) client, monitor);
}
monitor->monitor_hidden_files = monitor_hidden_files;
monitor->monitor_backup_files = monitor_backup_files;
monitor->monitor_attributes = file_attributes;
/* Call through to the real directory add calls. */
merged_callback_list = NULL;
/* Call up to real dir */
nautilus_directory_file_monitor_add
(desktop->details->real_directory, monitor,
monitor_hidden_files, monitor_backup_files,
file_attributes,
build_merged_callback_list, &merged_callback_list);
/* Handle the desktop part */
merged_callback_list = g_list_concat (merged_callback_list,
nautilus_file_list_copy (directory->details->file_list));
if (callback != NULL) {
(* callback) (directory, merged_callback_list, callback_data);
}
nautilus_file_list_free (merged_callback_list);
}
static void
desktop_monitor_remove (NautilusDirectory *directory,
gconstpointer client)
{
NautilusDesktopDirectory *desktop;
MergedMonitor *monitor;
desktop = NAUTILUS_DESKTOP_DIRECTORY (directory);
monitor = g_hash_table_lookup (desktop->details->monitors, client);
if (monitor == NULL) {
return;
}
g_hash_table_remove (desktop->details->monitors, client);
}
static void
desktop_force_reload (NautilusDirectory *directory)
{
NautilusDesktopDirectory *desktop;
desktop = NAUTILUS_DESKTOP_DIRECTORY (directory);
nautilus_directory_force_reload (desktop->details->real_directory);
/* We don't invalidate the files in desktop, since they are always
up to date. (And we don't ever want to mark them invalid.) */
}
static gboolean
desktop_are_all_files_seen (NautilusDirectory *directory)
{
NautilusDesktopDirectory *desktop;
desktop = NAUTILUS_DESKTOP_DIRECTORY (directory);
if (!nautilus_directory_are_all_files_seen (desktop->details->real_directory)) {
return FALSE;
}
return TRUE;
}
static gboolean
desktop_is_not_empty (NautilusDirectory *directory)
{
NautilusDesktopDirectory *desktop;
desktop = NAUTILUS_DESKTOP_DIRECTORY (directory);
if (nautilus_directory_is_not_empty (desktop->details->real_directory)) {
return TRUE;
}
return directory->details->file_list != NULL;
}
static GList *
desktop_get_file_list (NautilusDirectory *directory)
{
GList *real_dir_file_list, *desktop_dir_file_list;
real_dir_file_list = nautilus_directory_get_file_list
(NAUTILUS_DESKTOP_DIRECTORY (directory)->details->real_directory);
desktop_dir_file_list = GNOME_CALL_PARENT_WITH_DEFAULT
(NAUTILUS_DIRECTORY_CLASS, get_file_list, (directory), NULL);
return g_list_concat (real_dir_file_list, desktop_dir_file_list);
}
NautilusDirectory *
nautilus_desktop_directory_get_real_directory (NautilusDesktopDirectory *desktop)
{
nautilus_directory_ref (desktop->details->real_directory);
return desktop->details->real_directory;
}
static void
desktop_finalize (GObject *object)
{
NautilusDesktopDirectory *desktop;
desktop = NAUTILUS_DESKTOP_DIRECTORY (object);
nautilus_directory_unref (desktop->details->real_directory);
g_hash_table_destroy (desktop->details->callbacks);
g_hash_table_destroy (desktop->details->monitors);
g_free (desktop->details);
eel_preferences_remove_callback (NAUTILUS_PREFERENCES_DESKTOP_IS_HOME_DIR,
desktop_directory_changed_callback,
desktop);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
done_loading_callback (NautilusDirectory *real_directory,
NautilusDesktopDirectory *desktop)
{
nautilus_directory_emit_done_loading (NAUTILUS_DIRECTORY (desktop));
}
static void
forward_files_added_cover (NautilusDirectory *real_directory,
GList *files,
gpointer callback_data)
{
nautilus_directory_emit_files_added (NAUTILUS_DIRECTORY (callback_data), files);
}
static void
forward_files_changed_cover (NautilusDirectory *real_directory,
GList *files,
gpointer callback_data)
{
nautilus_directory_emit_files_changed (NAUTILUS_DIRECTORY (callback_data), files);
}
static void
update_desktop_directory (NautilusDesktopDirectory *desktop)
{
char *desktop_path;
char *desktop_uri;
NautilusDirectory *real_directory;
real_directory = desktop->details->real_directory;
if (real_directory != NULL) {
g_hash_table_foreach_remove (desktop->details->callbacks, (GHRFunc) gtk_true, NULL);
g_hash_table_foreach_remove (desktop->details->monitors, (GHRFunc) gtk_true, NULL);
g_signal_handlers_disconnect_by_func (real_directory, done_loading_callback, desktop);
g_signal_handlers_disconnect_by_func (real_directory, forward_files_added_cover, desktop);
g_signal_handlers_disconnect_by_func (real_directory, forward_files_changed_cover, desktop);
nautilus_directory_unref (real_directory);
}
desktop_path = nautilus_get_desktop_directory ();
desktop_uri = gnome_vfs_get_uri_from_local_path (desktop_path);
real_directory = nautilus_directory_get (desktop_uri);
g_free (desktop_uri);
g_free (desktop_path);
g_signal_connect_object (real_directory, "done_loading",
G_CALLBACK (done_loading_callback), desktop, 0);
g_signal_connect_object (real_directory, "files_added",
G_CALLBACK (forward_files_added_cover), desktop, 0);
g_signal_connect_object (real_directory, "files_changed",
G_CALLBACK (forward_files_changed_cover), desktop, 0);
desktop->details->real_directory = real_directory;
}
static void
desktop_directory_changed_callback (gpointer data)
{
update_desktop_directory (NAUTILUS_DESKTOP_DIRECTORY (data));
nautilus_directory_force_reload (NAUTILUS_DIRECTORY (data));
}
static void
nautilus_desktop_directory_instance_init (NautilusDesktopDirectory *desktop)
{
desktop->details = g_new0 (NautilusDesktopDirectoryDetails, 1);
desktop->details->callbacks = g_hash_table_new_full
(merged_callback_hash, merged_callback_equal,
NULL, (GDestroyNotify)merged_callback_destroy);
desktop->details->monitors = g_hash_table_new_full (NULL, NULL,
NULL, (GDestroyNotify)merged_monitor_destroy);
update_desktop_directory (NAUTILUS_DESKTOP_DIRECTORY (desktop));
eel_preferences_add_callback (NAUTILUS_PREFERENCES_DESKTOP_IS_HOME_DIR,
desktop_directory_changed_callback,
desktop);
}
static void
nautilus_desktop_directory_class_init (NautilusDesktopDirectoryClass *class)
{
NautilusDirectoryClass *directory_class;
directory_class = NAUTILUS_DIRECTORY_CLASS (class);
G_OBJECT_CLASS (class)->finalize = desktop_finalize;
directory_class->contains_file = desktop_contains_file;
directory_class->call_when_ready = desktop_call_when_ready;
directory_class->cancel_callback = desktop_cancel_callback;
directory_class->file_monitor_add = desktop_monitor_add;
directory_class->file_monitor_remove = desktop_monitor_remove;
directory_class->force_reload = desktop_force_reload;
directory_class->are_all_files_seen = desktop_are_all_files_seen;
directory_class->is_not_empty = desktop_is_not_empty;
/* Override get_file_list so that we can return the list of files
* in NautilusDesktopDirectory->details->real_directory,
* in addition to the list of standard desktop icons on the desktop.
*/
directory_class->get_file_list = desktop_get_file_list;
}
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