diff options
Diffstat (limited to 'nautilus-desktop/nautilus-desktop-directory-file.c')
| -rw-r--r-- | nautilus-desktop/nautilus-desktop-directory-file.c | 557 |
1 files changed, 557 insertions, 0 deletions
diff --git a/nautilus-desktop/nautilus-desktop-directory-file.c b/nautilus-desktop/nautilus-desktop-directory-file.c new file mode 100644 index 000000000..ba3cd136c --- /dev/null +++ b/nautilus-desktop/nautilus-desktop-directory-file.c @@ -0,0 +1,557 @@ +/* + nautilus-desktop-directory-file.c: Subclass of NautilusFile to help implement the + virtual desktop. + + 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, see <http://www.gnu.org/licenses/>. + + Author: Alexander Larsson <alexl@redhat.com> +*/ + +#include <config.h> +#include "nautilus-desktop-directory-file.h" +#include "nautilus-desktop-metadata.h" +#include "nautilus-desktop-directory.h" + +#include <libnautilus-private/nautilus-directory-notify.h> +#include <libnautilus-private/nautilus-directory-private.h> +#include <libnautilus-private/nautilus-file-attributes.h> +#include <libnautilus-private/nautilus-file-private.h> +#include <libnautilus-private/nautilus-file-utilities.h> +#include <libnautilus-private/nautilus-metadata.h> + +#include <eel/eel-glib-extensions.h> +#include <gtk/gtk.h> +#include <glib/gi18n.h> +#include <string.h> + +struct NautilusDesktopDirectoryFileDetails { + NautilusDesktopDirectory *desktop_directory; + + NautilusFile *real_dir_file; + + GHashTable *callbacks; + GHashTable *monitors; +}; + +typedef struct { + NautilusDesktopDirectoryFile *desktop_file; + NautilusFileCallback callback; + gpointer callback_data; + + NautilusFileAttributes delegated_attributes; + NautilusFileAttributes non_delegated_attributes; + + GList *non_ready_files; + + gboolean initializing; +} DesktopCallback; + +typedef struct { + NautilusDesktopDirectoryFile *desktop_file; + + NautilusFileAttributes delegated_attributes; + NautilusFileAttributes non_delegated_attributes; +} DesktopMonitor; + +G_DEFINE_TYPE (NautilusDesktopDirectoryFile, nautilus_desktop_directory_file, + NAUTILUS_TYPE_FILE); + +static guint +desktop_callback_hash (gconstpointer desktop_callback_as_pointer) +{ + const DesktopCallback *desktop_callback; + + desktop_callback = desktop_callback_as_pointer; + return GPOINTER_TO_UINT (desktop_callback->callback) + ^ GPOINTER_TO_UINT (desktop_callback->callback_data); +} + +static gboolean +desktop_callback_equal (gconstpointer desktop_callback_as_pointer, + gconstpointer desktop_callback_as_pointer_2) +{ + const DesktopCallback *desktop_callback, *desktop_callback_2; + + desktop_callback = desktop_callback_as_pointer; + desktop_callback_2 = desktop_callback_as_pointer_2; + + return desktop_callback->callback == desktop_callback_2->callback + && desktop_callback->callback_data == desktop_callback_2->callback_data; +} + + +static void +real_file_changed_callback (NautilusFile *real_file, + gpointer callback_data) +{ + NautilusDesktopDirectoryFile *desktop_file; + + desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (callback_data); + nautilus_file_changed (NAUTILUS_FILE (desktop_file)); +} + +static NautilusFileAttributes +get_delegated_attributes_mask (void) +{ + return NAUTILUS_FILE_ATTRIBUTE_DEEP_COUNTS | + NAUTILUS_FILE_ATTRIBUTE_DIRECTORY_ITEM_COUNT | + NAUTILUS_FILE_ATTRIBUTE_DIRECTORY_ITEM_MIME_TYPES | + NAUTILUS_FILE_ATTRIBUTE_INFO; +} + +static void +partition_attributes (NautilusFileAttributes attributes, + NautilusFileAttributes *delegated_attributes, + NautilusFileAttributes *non_delegated_attributes) +{ + NautilusFileAttributes mask; + + mask = get_delegated_attributes_mask (); + + *delegated_attributes = attributes & mask; + *non_delegated_attributes = attributes & ~mask; +} + +static void +desktop_directory_file_monitor_add (NautilusFile *file, + gconstpointer client, + NautilusFileAttributes attributes) +{ + NautilusDesktopDirectoryFile *desktop_file; + DesktopMonitor *monitor; + + desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (file); + + /* Map the client to a unique value so this doesn't interfere + * with direct monitoring of the file by the same client. + */ + monitor = g_hash_table_lookup (desktop_file->details->monitors, client); + if (monitor != NULL) { + g_assert (monitor->desktop_file == desktop_file); + } else { + monitor = g_new0 (DesktopMonitor, 1); + monitor->desktop_file = desktop_file; + g_hash_table_insert (desktop_file->details->monitors, + (gpointer) client, monitor); + } + + partition_attributes (attributes, + &monitor->delegated_attributes, + &monitor->non_delegated_attributes); + + /* Pawn off partioned attributes to real dir file */ + nautilus_file_monitor_add (desktop_file->details->real_dir_file, + monitor, monitor->delegated_attributes); + + /* Do the rest ourself */ + nautilus_directory_monitor_add_internal + (file->details->directory, file, + client, TRUE, + monitor->non_delegated_attributes, + NULL, NULL); +} + +static void +desktop_directory_file_monitor_remove (NautilusFile *file, + gconstpointer client) +{ + NautilusDesktopDirectoryFile *desktop_file; + DesktopMonitor *monitor; + + desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (file); + + /* Map the client to the value used by the earlier add call. */ + monitor = g_hash_table_lookup (desktop_file->details->monitors, client); + if (monitor == NULL) { + return; + } + + /* Call through to the real file remove calls. */ + g_hash_table_remove (desktop_file->details->monitors, client); + + /* Remove the locally handled parts */ + nautilus_directory_monitor_remove_internal + (file->details->directory, file, client); +} + +static void +desktop_callback_destroy (DesktopCallback *desktop_callback) +{ + g_assert (desktop_callback != NULL); + g_assert (NAUTILUS_IS_DESKTOP_DIRECTORY_FILE (desktop_callback->desktop_file)); + + nautilus_file_unref (NAUTILUS_FILE (desktop_callback->desktop_file)); + g_list_free (desktop_callback->non_ready_files); + g_free (desktop_callback); +} + +static void +desktop_callback_check_done (DesktopCallback *desktop_callback) +{ + /* Check if we are ready. */ + if (desktop_callback->initializing || + desktop_callback->non_ready_files != NULL) { + return; + } + + /* Ensure our metadata is updated before calling back */ + nautilus_desktop_update_metadata_from_keyfile (NAUTILUS_FILE (desktop_callback->desktop_file), "directory"); + + /* Remove from the hash table before sending it. */ + g_hash_table_remove (desktop_callback->desktop_file->details->callbacks, + desktop_callback); + + /* We are ready, so do the real callback. */ + (* desktop_callback->callback) (NAUTILUS_FILE (desktop_callback->desktop_file), + desktop_callback->callback_data); + + /* And we are done. */ + desktop_callback_destroy (desktop_callback); +} + +static void +desktop_callback_remove_file (DesktopCallback *desktop_callback, + NautilusFile *file) +{ + desktop_callback->non_ready_files = g_list_remove + (desktop_callback->non_ready_files, file); + desktop_callback_check_done (desktop_callback); +} + +static void +ready_callback (NautilusFile *file, + gpointer callback_data) +{ + DesktopCallback *desktop_callback; + + g_assert (NAUTILUS_IS_FILE (file)); + g_assert (callback_data != NULL); + + desktop_callback = callback_data; + g_assert (g_list_find (desktop_callback->non_ready_files, file) != NULL); + + desktop_callback_remove_file (desktop_callback, file); +} + +static void +desktop_directory_file_call_when_ready (NautilusFile *file, + NautilusFileAttributes attributes, + NautilusFileCallback callback, + gpointer callback_data) + +{ + NautilusDesktopDirectoryFile *desktop_file; + DesktopCallback search_key, *desktop_callback; + + desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (file); + + /* Check to be sure we aren't overwriting. */ + search_key.callback = callback; + search_key.callback_data = callback_data; + if (g_hash_table_lookup (desktop_file->details->callbacks, &search_key) != NULL) { + g_warning ("tried to add a new callback while an old one was pending"); + return; + } + + /* Create a desktop_callback record. */ + desktop_callback = g_new0 (DesktopCallback, 1); + nautilus_file_ref (file); + desktop_callback->desktop_file = desktop_file; + desktop_callback->callback = callback; + desktop_callback->callback_data = callback_data; + desktop_callback->initializing = TRUE; + + partition_attributes (attributes, + &desktop_callback->delegated_attributes, + &desktop_callback->non_delegated_attributes); + + desktop_callback->non_ready_files = g_list_prepend + (desktop_callback->non_ready_files, file); + desktop_callback->non_ready_files = g_list_prepend + (desktop_callback->non_ready_files, desktop_file->details->real_dir_file); + + /* Put it in the hash table. */ + g_hash_table_insert (desktop_file->details->callbacks, + desktop_callback, desktop_callback); + + /* Now connect to each file's call_when_ready. */ + nautilus_directory_call_when_ready_internal + (file->details->directory, file, + desktop_callback->non_delegated_attributes, + FALSE, NULL, ready_callback, desktop_callback); + nautilus_file_call_when_ready + (desktop_file->details->real_dir_file, + desktop_callback->delegated_attributes, + ready_callback, desktop_callback); + + desktop_callback->initializing = FALSE; + + /* Check if any files became read while we were connecting up + * the call_when_ready callbacks (also handles the pathological + * case where there are no files at all). + */ + desktop_callback_check_done (desktop_callback); + +} + +static void +desktop_directory_file_cancel_call_when_ready (NautilusFile *file, + NautilusFileCallback callback, + gpointer callback_data) +{ + NautilusDesktopDirectoryFile *desktop_file; + DesktopCallback search_key, *desktop_callback; + + desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (file); + + /* Find the entry in the table. */ + search_key.callback = callback; + search_key.callback_data = callback_data; + desktop_callback = g_hash_table_lookup (desktop_file->details->callbacks, &search_key); + if (desktop_callback == NULL) { + return; + } + + /* Remove from the hash table before working with it. */ + g_hash_table_remove (desktop_callback->desktop_file->details->callbacks, desktop_callback); + + /* Tell the real directory to cancel the call. */ + nautilus_directory_cancel_callback_internal + (file->details->directory, file, + NULL, ready_callback, desktop_callback); + + nautilus_file_cancel_call_when_ready + (desktop_file->details->real_dir_file, + ready_callback, desktop_callback); + + desktop_callback_destroy (desktop_callback); +} + +static gboolean +real_check_if_ready (NautilusFile *file, + NautilusFileAttributes attributes) +{ + return nautilus_directory_check_if_ready_internal + (file->details->directory, file, + attributes); +} + +static gboolean +desktop_directory_file_check_if_ready (NautilusFile *file, + NautilusFileAttributes attributes) +{ + NautilusFileAttributes delegated_attributes, non_delegated_attributes; + NautilusDesktopDirectoryFile *desktop_file; + + desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (file); + + partition_attributes (attributes, + &delegated_attributes, + &non_delegated_attributes); + + return real_check_if_ready (file, non_delegated_attributes) && + nautilus_file_check_if_ready (desktop_file->details->real_dir_file, + delegated_attributes); +} + +static gboolean +desktop_directory_file_get_item_count (NautilusFile *file, + guint *count, + gboolean *count_unreadable) +{ + NautilusDesktopDirectoryFile *desktop_file; + gboolean got_count; + + desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (file); + + got_count = nautilus_file_get_directory_item_count (desktop_file->details->real_dir_file, + count, + count_unreadable); + + if (count) { + *count += g_list_length (file->details->directory->details->file_list); + } + + return got_count; +} + +static NautilusRequestStatus +desktop_directory_file_get_deep_counts (NautilusFile *file, + guint *directory_count, + guint *file_count, + guint *unreadable_directory_count, + goffset *total_size) +{ + NautilusDesktopDirectoryFile *desktop_file; + NautilusRequestStatus status; + + desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (file); + + status = nautilus_file_get_deep_counts (desktop_file->details->real_dir_file, + directory_count, + file_count, + unreadable_directory_count, + total_size, + TRUE); + + if (file_count) { + *file_count += g_list_length (file->details->directory->details->file_list); + } + + return status; +} + +static gboolean +desktop_directory_file_get_date (NautilusFile *file, + NautilusDateType date_type, + time_t *date) +{ + NautilusDesktopDirectoryFile *desktop_file; + + desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (file); + + return nautilus_file_get_date (desktop_file->details->real_dir_file, + date_type, + date); +} + +static char * +desktop_directory_file_get_where_string (NautilusFile *file) +{ + return g_strdup (_("on the desktop")); +} + + +static void +monitor_destroy (gpointer data) +{ + DesktopMonitor *monitor = data; + + nautilus_file_monitor_remove + (NAUTILUS_FILE (monitor->desktop_file->details->real_dir_file), monitor); + g_free (monitor); +} + +static void +nautilus_desktop_directory_file_set_metadata (NautilusFile *file, + const char *key, + const char *value) +{ + nautilus_desktop_set_metadata_string (file, "directory", key, value); +} + +static void +nautilus_desktop_directory_file_set_metadata_as_list (NautilusFile *file, + const char *key, + char **value) +{ + nautilus_desktop_set_metadata_stringv (file, "directory", key, (const gchar **) value); +} + +static void +nautilus_desktop_directory_file_init (NautilusDesktopDirectoryFile *desktop_file) +{ + NautilusDesktopDirectory *desktop_directory; + NautilusDirectory *real_dir; + NautilusFile *real_dir_file; + + desktop_file->details = G_TYPE_INSTANCE_GET_PRIVATE (desktop_file, + NAUTILUS_TYPE_DESKTOP_DIRECTORY_FILE, + NautilusDesktopDirectoryFileDetails); + + desktop_directory = NAUTILUS_DESKTOP_DIRECTORY (nautilus_directory_get_by_uri (EEL_DESKTOP_URI)); + desktop_file->details->desktop_directory = desktop_directory; + + desktop_file->details->callbacks = g_hash_table_new + (desktop_callback_hash, desktop_callback_equal); + desktop_file->details->monitors = g_hash_table_new_full (NULL, NULL, + NULL, monitor_destroy); + + real_dir = nautilus_desktop_directory_get_real_directory (desktop_directory); + real_dir_file = nautilus_directory_get_corresponding_file (real_dir); + nautilus_directory_unref (real_dir); + + desktop_file->details->real_dir_file = real_dir_file; + g_signal_connect_object (real_dir_file, "changed", + G_CALLBACK (real_file_changed_callback), desktop_file, 0); +} + + +static void +desktop_callback_remove_file_cover (gpointer key, + gpointer value, + gpointer callback_data) +{ + desktop_callback_remove_file + (value, NAUTILUS_FILE (callback_data)); +} + + +static void +desktop_finalize (GObject *object) +{ + NautilusDesktopDirectoryFile *desktop_file; + NautilusDesktopDirectory *desktop_directory; + + desktop_file = NAUTILUS_DESKTOP_DIRECTORY_FILE (object); + desktop_directory = desktop_file->details->desktop_directory; + + /* Todo: ghash now safe? */ + eel_g_hash_table_safe_for_each + (desktop_file->details->callbacks, + desktop_callback_remove_file_cover, + desktop_file->details->real_dir_file); + + if (g_hash_table_size (desktop_file->details->callbacks) != 0) { + g_warning ("call_when_ready still pending when desktop virtual file is destroyed"); + } + + g_hash_table_destroy (desktop_file->details->callbacks); + g_hash_table_destroy (desktop_file->details->monitors); + + nautilus_file_unref (desktop_file->details->real_dir_file); + nautilus_directory_unref (NAUTILUS_DIRECTORY (desktop_directory)); + + G_OBJECT_CLASS (nautilus_desktop_directory_file_parent_class)->finalize (object); +} + +static void +nautilus_desktop_directory_file_class_init (NautilusDesktopDirectoryFileClass *klass) +{ + GObjectClass *object_class; + NautilusFileClass *file_class; + + object_class = G_OBJECT_CLASS (klass); + file_class = NAUTILUS_FILE_CLASS (klass); + + object_class->finalize = desktop_finalize; + + file_class->default_file_type = G_FILE_TYPE_DIRECTORY; + + file_class->monitor_add = desktop_directory_file_monitor_add; + file_class->monitor_remove = desktop_directory_file_monitor_remove; + file_class->call_when_ready = desktop_directory_file_call_when_ready; + file_class->cancel_call_when_ready = desktop_directory_file_cancel_call_when_ready; + file_class->check_if_ready = desktop_directory_file_check_if_ready; + file_class->get_item_count = desktop_directory_file_get_item_count; + file_class->get_deep_counts = desktop_directory_file_get_deep_counts; + file_class->get_date = desktop_directory_file_get_date; + file_class->get_where_string = desktop_directory_file_get_where_string; + file_class->set_metadata = nautilus_desktop_directory_file_set_metadata; + file_class->set_metadata_as_list = nautilus_desktop_directory_file_set_metadata_as_list; + + g_type_class_add_private (klass, sizeof (NautilusDesktopDirectoryFileDetails)); +} |