/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- caja-desktop-directory.c: Subclass of CajaDirectory 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. Author: Alexander Larsson <alexl@redhat.com> */ #include <config.h> #include "caja-desktop-directory.h" #include "caja-directory-private.h" #include "caja-file.h" #include "caja-file-private.h" #include "caja-file-utilities.h" #include "caja-global-preferences.h" #include <eel/eel-glib-extensions.h> #include <eel/eel-gtk-macros.h> #include <gtk/gtk.h> struct CajaDesktopDirectoryDetails { CajaDirectory *real_directory; GHashTable *callbacks; GHashTable *monitors; }; typedef struct { CajaDesktopDirectory *desktop_dir; CajaDirectoryCallback callback; gpointer callback_data; CajaFileAttributes wait_for_attributes; gboolean wait_for_file_list; GList *non_ready_directories; GList *merged_file_list; } MergedCallback; typedef struct { CajaDesktopDirectory *desktop_dir; gboolean monitor_hidden_files; CajaFileAttributes monitor_attributes; } MergedMonitor; static void desktop_directory_changed_callback (gpointer data); G_DEFINE_TYPE (CajaDesktopDirectory, caja_desktop_directory, CAJA_TYPE_DIRECTORY); #define parent_class caja_desktop_directory_parent_class static gboolean desktop_contains_file (CajaDirectory *directory, CajaFile *file) { CajaDesktopDirectory *desktop; desktop = CAJA_DESKTOP_DIRECTORY (directory); if (caja_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 (CAJA_IS_DESKTOP_DIRECTORY (merged_callback->desktop_dir)); g_list_free (merged_callback->non_ready_directories); caja_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) (CAJA_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, CajaDirectory *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 (CajaDirectory *directory, GList *files, gpointer callback_data) { MergedCallback *merged_callback; g_assert (CAJA_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, caja_file_list_copy (files)); /* Check if we are ready. */ merged_callback_remove_directory (merged_callback, directory); } static void desktop_call_when_ready (CajaDirectory *directory, CajaFileAttributes file_attributes, gboolean wait_for_file_list, CajaDirectoryCallback callback, gpointer callback_data) { CajaDesktopDirectory *desktop; MergedCallback search_key, *merged_callback; desktop = CAJA_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, caja_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. */ caja_directory_call_when_ready (desktop->details->real_directory, merged_callback->wait_for_attributes, merged_callback->wait_for_file_list, directory_ready_callback, merged_callback); caja_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 (CajaDirectory *directory, CajaDirectoryCallback callback, gpointer callback_data) { CajaDesktopDirectory *desktop; MergedCallback search_key, *merged_callback; GList *node; desktop = CAJA_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) { caja_directory_cancel_callback (node->data, directory_ready_callback, merged_callback); } merged_callback_destroy (merged_callback); } static void merged_monitor_destroy (MergedMonitor *monitor) { CajaDesktopDirectory *desktop; desktop = monitor->desktop_dir; /* Call through to the real directory remove calls. */ caja_directory_file_monitor_remove (desktop->details->real_directory, monitor); caja_directory_monitor_remove_internal (CAJA_DIRECTORY (desktop), NULL, monitor); g_free (monitor); } static void build_merged_callback_list (CajaDirectory *directory, GList *file_list, gpointer callback_data) { GList **merged_list; merged_list = callback_data; *merged_list = g_list_concat (*merged_list, caja_file_list_copy (file_list)); } static void desktop_monitor_add (CajaDirectory *directory, gconstpointer client, gboolean monitor_hidden_files, CajaFileAttributes file_attributes, CajaDirectoryCallback callback, gpointer callback_data) { CajaDesktopDirectory *desktop; MergedMonitor *monitor; GList *merged_callback_list; desktop = CAJA_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_attributes = file_attributes; /* Call through to the real directory add calls. */ merged_callback_list = NULL; /* Call up to real dir */ caja_directory_file_monitor_add (desktop->details->real_directory, monitor, monitor_hidden_files, file_attributes, build_merged_callback_list, &merged_callback_list); /* Handle the desktop part */ merged_callback_list = g_list_concat (merged_callback_list, caja_file_list_copy (directory->details->file_list)); if (callback != NULL) { (* callback) (directory, merged_callback_list, callback_data); } caja_file_list_free (merged_callback_list); } static void desktop_monitor_remove (CajaDirectory *directory, gconstpointer client) { CajaDesktopDirectory *desktop; MergedMonitor *monitor; desktop = CAJA_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 (CajaDirectory *directory) { CajaDesktopDirectory *desktop; desktop = CAJA_DESKTOP_DIRECTORY (directory); caja_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 (CajaDirectory *directory) { CajaDesktopDirectory *desktop; desktop = CAJA_DESKTOP_DIRECTORY (directory); if (!caja_directory_are_all_files_seen (desktop->details->real_directory)) { return FALSE; } return TRUE; } static gboolean desktop_is_not_empty (CajaDirectory *directory) { CajaDesktopDirectory *desktop; desktop = CAJA_DESKTOP_DIRECTORY (directory); if (caja_directory_is_not_empty (desktop->details->real_directory)) { return TRUE; } return directory->details->file_list != NULL; } static GList * desktop_get_file_list (CajaDirectory *directory) { GList *real_dir_file_list, *desktop_dir_file_list = NULL; real_dir_file_list = caja_directory_get_file_list (CAJA_DESKTOP_DIRECTORY (directory)->details->real_directory); desktop_dir_file_list = EEL_CALL_PARENT_WITH_RETURN_VALUE (CAJA_DIRECTORY_CLASS, get_file_list, (directory)); return g_list_concat (real_dir_file_list, desktop_dir_file_list); } CajaDirectory * caja_desktop_directory_get_real_directory (CajaDesktopDirectory *desktop) { caja_directory_ref (desktop->details->real_directory); return desktop->details->real_directory; } static void desktop_finalize (GObject *object) { CajaDesktopDirectory *desktop; desktop = CAJA_DESKTOP_DIRECTORY (object); caja_directory_unref (desktop->details->real_directory); g_hash_table_destroy (desktop->details->callbacks); g_hash_table_destroy (desktop->details->monitors); g_free (desktop->details); g_signal_handlers_disconnect_by_func (caja_preferences, desktop_directory_changed_callback, desktop); G_OBJECT_CLASS (caja_desktop_directory_parent_class)->finalize (object); } static void done_loading_callback (CajaDirectory *real_directory, CajaDesktopDirectory *desktop) { caja_directory_emit_done_loading (CAJA_DIRECTORY (desktop)); } static void forward_files_added_cover (CajaDirectory *real_directory, GList *files, gpointer callback_data) { caja_directory_emit_files_added (CAJA_DIRECTORY (callback_data), files); } static void forward_files_changed_cover (CajaDirectory *real_directory, GList *files, gpointer callback_data) { caja_directory_emit_files_changed (CAJA_DIRECTORY (callback_data), files); } static void update_desktop_directory (CajaDesktopDirectory *desktop) { char *desktop_path; char *desktop_uri; CajaDirectory *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); caja_directory_unref (real_directory); } desktop_path = caja_get_desktop_directory (); desktop_uri = g_filename_to_uri (desktop_path, NULL, NULL); real_directory = caja_directory_get_by_uri (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 (CAJA_DESKTOP_DIRECTORY (data)); caja_directory_force_reload (CAJA_DIRECTORY (data)); } static void caja_desktop_directory_init (CajaDesktopDirectory *desktop) { desktop->details = g_new0 (CajaDesktopDirectoryDetails, 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 (CAJA_DESKTOP_DIRECTORY (desktop)); g_signal_connect_swapped (caja_preferences, "changed::" CAJA_PREFERENCES_DESKTOP_IS_HOME_DIR, G_CALLBACK(desktop_directory_changed_callback), desktop); } static void caja_desktop_directory_class_init (CajaDesktopDirectoryClass *class) { CajaDirectoryClass *directory_class; directory_class = CAJA_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 CajaDesktopDirectory->details->real_directory, * in addition to the list of standard desktop icons on the desktop. */ directory_class->get_file_list = desktop_get_file_list; }