/* GTK - The GIMP Toolkit * gtkfilesystemmodel.c: GtkTreeModel wrapping a GtkFileSystem * Copyright (C) 2003, Red Hat, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #include "gtkfilesystemmodel.h" #include "gtkfilesystem.h" #include #include typedef struct _GtkFileSystemModelClass GtkFileSystemModelClass; typedef struct _FileModelNode FileModelNode; #define GTK_FILE_SYSTEM_MODEL_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_FILE_SYSTEM_MODEL, GtkFileSystemModelClass)) #define GTK_IS_FILE_SYSTEM_MODEL_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_FILE_SYSTEM_MODEL)) #define GTK_FILE_SYSTEM_MODEL_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_FILE_SYSTEM_MODEL, GtkFileSystemModelClass)) struct _GtkFileSystemModelClass { GObjectClass parent_class; }; struct _GtkFileSystemModel { GObject parent_instance; GtkFileSystem *file_system; GtkFileInfoType types; FileModelNode *roots; GtkFileFolder *root_folder; GSource *dummy_idle; GSList *dummy_idle_nodes; gushort max_depth; guint show_hidden : 1; guint show_folders : 1; guint show_files : 1; guint folders_only : 1; }; struct _FileModelNode { gchar *uri; FileModelNode *next; GtkFileInfo *info; GtkFileFolder *folder; FileModelNode *children; FileModelNode *parent; guint ref_count; gushort depth; guint loaded : 1; guint has_dummy : 1; guint is_visible : 1; guint has_children : 1; }; static void gtk_file_system_model_class_init (GtkFileSystemModelClass *class); static void gtk_file_system_model_iface_init (GtkTreeModelIface *iface); static void gtk_file_system_model_init (GtkFileSystemModel *model); static void gtk_file_system_model_finalize (GObject *object); static GtkTreeModelFlags gtk_file_system_model_get_flags (GtkTreeModel *tree_model); static gint gtk_file_system_model_get_n_columns (GtkTreeModel *tree_model); static GType gtk_file_system_model_get_column_type (GtkTreeModel *tree_model, gint index); static gboolean gtk_file_system_model_get_iter (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreePath *path); static GtkTreePath * gtk_file_system_model_get_path (GtkTreeModel *tree_model, GtkTreeIter *iter); static void gtk_file_system_model_get_value (GtkTreeModel *tree_model, GtkTreeIter *iter, gint column, GValue *value); static gboolean gtk_file_system_model_iter_next (GtkTreeModel *tree_model, GtkTreeIter *iter); static gboolean gtk_file_system_model_iter_children (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *parent); static gboolean gtk_file_system_model_iter_has_child (GtkTreeModel *tree_model, GtkTreeIter *iter); static gint gtk_file_system_model_iter_n_children (GtkTreeModel *tree_model, GtkTreeIter *iter); static gboolean gtk_file_system_model_iter_nth_child (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *parent, gint n); static gboolean gtk_file_system_model_iter_parent (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *child); static void gtk_file_system_model_ref_node (GtkTreeModel *tree_model, GtkTreeIter *iter); static void gtk_file_system_model_unref_node (GtkTreeModel *tree_model, GtkTreeIter *iter); static void queue_dummy_idle (GtkFileSystemModel *model, FileModelNode *node); static void unqueue_dummy_idle (GtkFileSystemModel *model, FileModelNode *node); static FileModelNode *file_model_node_new (const gchar *uri); static void file_model_node_free (FileModelNode *node); static void file_model_node_ref (FileModelNode *node); static void file_model_node_unref (GtkFileSystemModel *model, FileModelNode *node); static const GtkFileInfo *file_model_node_get_info (GtkFileSystemModel *model, FileModelNode *node); static gboolean file_model_node_is_visible (GtkFileSystemModel *model, FileModelNode *node); static void file_model_node_clear (GtkFileSystemModel *model, FileModelNode *node); static FileModelNode * file_model_node_get_children (GtkFileSystemModel *model, FileModelNode *node); GType _gtk_file_system_model_get_type (void) { static GType file_system_model_type = 0; if (!file_system_model_type) { static const GTypeInfo file_system_model_info = { sizeof (GtkFileSystemModelClass), NULL, /* base_init */ NULL, /* base_finalize */ (GClassInitFunc) gtk_file_system_model_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (GtkFileSystemModel), 0, /* n_preallocs */ (GInstanceInitFunc) gtk_file_system_model_init, }; static const GInterfaceInfo file_system_info = { (GInterfaceInitFunc) gtk_file_system_model_iface_init, /* interface_init */ NULL, /* interface_finalize */ NULL /* interface_data */ }; file_system_model_type = g_type_register_static (G_TYPE_OBJECT, "GtkFileSystemModel", &file_system_model_info, 0); g_type_add_interface_static (file_system_model_type, GTK_TYPE_TREE_MODEL, &file_system_info); } return file_system_model_type; } static void gtk_file_system_model_class_init (GtkFileSystemModelClass *class) { GObjectClass *gobject_class = G_OBJECT_CLASS (class); gobject_class->finalize = gtk_file_system_model_finalize; } static void gtk_file_system_model_iface_init (GtkTreeModelIface *iface) { iface->get_flags = gtk_file_system_model_get_flags; iface->get_n_columns = gtk_file_system_model_get_n_columns; iface->get_column_type = gtk_file_system_model_get_column_type; iface->get_iter = gtk_file_system_model_get_iter; iface->get_path = gtk_file_system_model_get_path; iface->get_value = gtk_file_system_model_get_value; iface->iter_next = gtk_file_system_model_iter_next; iface->iter_children = gtk_file_system_model_iter_children; iface->iter_has_child = gtk_file_system_model_iter_has_child; iface->iter_n_children = gtk_file_system_model_iter_n_children; iface->iter_nth_child = gtk_file_system_model_iter_nth_child; iface->iter_parent = gtk_file_system_model_iter_parent; iface->ref_node = gtk_file_system_model_ref_node; iface->unref_node = gtk_file_system_model_unref_node; } static void gtk_file_system_model_init (GtkFileSystemModel *model) { model->show_files = TRUE; model->show_folders = TRUE; model->show_hidden = FALSE; } static void gtk_file_system_model_finalize (GObject *object) { GtkFileSystemModel *model = GTK_FILE_SYSTEM_MODEL (object); FileModelNode *children; if (model->root_folder) g_object_unref (model->root_folder); children = model->roots; while (children) { file_model_node_free (children); children = children->next; } } /* * ******************** GtkTreeModel methods ******************** */ static GtkTreeModelFlags gtk_file_system_model_get_flags (GtkTreeModel *tree_model) { GtkFileSystemModel *model = GTK_FILE_SYSTEM_MODEL (tree_model); GtkTreeModelFlags flags = GTK_TREE_MODEL_ITERS_PERSIST; if (model->max_depth == 1) flags |= GTK_TREE_MODEL_LIST_ONLY; return flags; } static gint gtk_file_system_model_get_n_columns (GtkTreeModel *tree_model) { return GTK_FILE_SYSTEM_MODEL_N_COLUMNS; } static GType gtk_file_system_model_get_column_type (GtkTreeModel *tree_model, gint index) { switch (index) { case GTK_FILE_SYSTEM_MODEL_URI: return G_TYPE_STRING; case GTK_FILE_SYSTEM_MODEL_INFO: return GTK_TYPE_FILE_INFO; case GTK_FILE_SYSTEM_MODEL_DISPLAY_NAME: return G_TYPE_STRING; default: g_assert_not_reached (); return G_TYPE_NONE; } } static gboolean gtk_file_system_model_get_iter (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreePath *path) { GtkTreeIter parent; gint *indices; gint depth, i; indices = gtk_tree_path_get_indices (path); depth = gtk_tree_path_get_depth (path); g_return_val_if_fail (depth > 0, FALSE); if (!gtk_tree_model_iter_nth_child (tree_model, iter, NULL, indices[0])) return FALSE; for (i = 1; i < depth; i++) { parent = *iter; if (!gtk_tree_model_iter_nth_child (tree_model, iter, &parent, indices[i])) return FALSE; } return TRUE; } static GtkTreePath * gtk_file_system_model_get_path (GtkTreeModel *tree_model, GtkTreeIter *iter) { GtkFileSystemModel *model = GTK_FILE_SYSTEM_MODEL (tree_model); FileModelNode *node = iter->user_data; GtkTreePath *result = gtk_tree_path_new (); while (node) { FileModelNode *parent = node->parent; FileModelNode *children; int n = 0; if (parent) children = parent->children; else children = model->roots; while (children != node) { if (children->is_visible) n++; children = children->next; } gtk_tree_path_prepend_index (result, n); node = parent; } return result; } static void gtk_file_system_model_get_value (GtkTreeModel *tree_model, GtkTreeIter *iter, gint column, GValue *value) { GtkFileSystemModel *model = GTK_FILE_SYSTEM_MODEL (tree_model); FileModelNode *node = iter->user_data; switch (column) { case GTK_FILE_SYSTEM_MODEL_URI: g_value_init (value, G_TYPE_STRING); g_value_set_string (value, node->uri); break; case GTK_FILE_SYSTEM_MODEL_INFO: g_value_init (value, GTK_TYPE_FILE_INFO); g_value_set_boxed (value, file_model_node_get_info (model, node)); break; case GTK_FILE_SYSTEM_MODEL_DISPLAY_NAME: { const GtkFileInfo *info = file_model_node_get_info (model, node); g_value_init (value, G_TYPE_STRING); g_value_set_string (value, gtk_file_info_get_display_name (info)); } break; default: g_assert_not_reached (); } } static gboolean gtk_file_system_model_iter_next (GtkTreeModel *tree_model, GtkTreeIter *iter) { FileModelNode *node = iter->user_data; node = node->next; while (node && !node->is_visible) node = node->next; iter->user_data = node; return node != NULL; } static gboolean gtk_file_system_model_iter_children (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *parent) { GtkFileSystemModel *model = GTK_FILE_SYSTEM_MODEL (tree_model); FileModelNode *children; if (parent) { FileModelNode *parent_node = parent->user_data; children = file_model_node_get_children (model, parent_node); } else { children = model->roots; } while (children && !children->is_visible) children = children->next; iter->user_data = children; return children != NULL; } static gboolean gtk_file_system_model_iter_has_child (GtkTreeModel *tree_model, GtkTreeIter *iter) { FileModelNode *node = iter->user_data; /* We never want to go into a directory just to * find out if it has children */ if (node->loaded) return node->has_children; else { GtkFileSystemModel *model = GTK_FILE_SYSTEM_MODEL (tree_model); if (node->depth == model->max_depth) return FALSE; else { const GtkFileInfo *info = file_model_node_get_info (model, node); return gtk_file_info_get_is_folder (info); } } } static gint gtk_file_system_model_iter_n_children (GtkTreeModel *tree_model, GtkTreeIter *iter) { GtkFileSystemModel *model = GTK_FILE_SYSTEM_MODEL (tree_model); FileModelNode *children; gint n = 0; if (iter) { FileModelNode *node = iter->user_data; children = file_model_node_get_children (model, node); } else { children = model->roots; } while (children) { if (children->is_visible) n++; children = children->next; } return n; } static gboolean gtk_file_system_model_iter_nth_child (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *parent, gint n) { GtkFileSystemModel *model = GTK_FILE_SYSTEM_MODEL (tree_model); FileModelNode *children; if (parent) { FileModelNode *parent_node = parent->user_data; children = file_model_node_get_children (model, parent_node); } else { children = model->roots; } while (children && !children->is_visible) children = children->next; while (n && children) { n--; children = children->next; while (children && !children->is_visible) children = children->next; } iter->user_data = children; return children != NULL; } static gboolean gtk_file_system_model_iter_parent (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *child) { FileModelNode *node = child->user_data; node = node->parent; iter->user_data = node; return node != NULL; } static void gtk_file_system_model_ref_node (GtkTreeModel *tree_model, GtkTreeIter *iter) { file_model_node_ref (iter->user_data); } static void gtk_file_system_model_unref_node (GtkTreeModel *tree_model, GtkTreeIter *iter) { file_model_node_unref (GTK_FILE_SYSTEM_MODEL (tree_model), iter->user_data); } /** * _gtk_file_system_model_new: * @file_system: an object implementing #GtkFileSystem * @root_uri: the URI of root of the file system to display, * or %NULL to display starting from the * root or roots of the fielsystem. * @max_depth: the maximum depth from the children of @root_uri * or the roots of the file system to display in * the file selector). A depth of 0 displays * only the immediate children of @root_uri, * or the roots of the filesystem. -1 for no * maximum depth. * @types: a bitmask indicating the types of information * that is desired about the files. This will * determine what information is returned by * _gtk_file_system_model_get_info(). * * Creates a new #GtkFileSystemModel object. The #GtkFileSystemModel * object wraps a #GtkFileSystem interface as a #GtkTreeModel. * Using the @root_uri and @max_depth parameters, the tree model * can be restricted to a subportion of the entire file system. * * Return value: the newly created #GtkFileSystemModel object. **/ GtkFileSystemModel * _gtk_file_system_model_new (GtkFileSystem *file_system, const gchar *root_uri, gint max_depth, GtkFileInfoType types) { GtkFileSystemModel *model; GSList *roots, *tmp_list; g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), NULL); model = g_object_new (GTK_TYPE_FILE_SYSTEM_MODEL, NULL); model->file_system = g_object_ref (file_system); if (max_depth < 0) model->max_depth = G_MAXUSHORT; else model->max_depth = MIN (max_depth, G_MAXUSHORT); model->types = types | GTK_FILE_INFO_IS_FOLDER | GTK_FILE_INFO_IS_HIDDEN; if (root_uri) { GSList *child_uris; model->root_folder = gtk_file_system_get_folder (file_system, root_uri, model->types, NULL); /* NULL-GError */ if (model->root_folder && gtk_file_folder_list_children (model->root_folder, &child_uris, NULL)) /* NULL-GError */ roots = child_uris; } else roots = gtk_file_system_list_roots (file_system); roots = g_slist_sort (roots, (GCompareFunc)strcmp); for (tmp_list = roots; tmp_list; tmp_list = tmp_list->next) { FileModelNode *node = file_model_node_new (tmp_list->data); g_free (tmp_list->data); node->is_visible = file_model_node_is_visible (model, node); node->next = model->roots; node->depth = 0; model->roots = node; } g_slist_free (roots); model->roots = (FileModelNode *)g_slist_reverse ((GSList *)model->roots); return model; } static void model_refilter_recurse (GtkFileSystemModel *model, FileModelNode *parent, GtkTreePath *path) { GtkTreeModel *tree_model = GTK_TREE_MODEL (model); int i = 0; FileModelNode *nodes; gboolean has_children = FALSE; if (parent && !parent->loaded) return; if (parent) nodes = parent->children; else nodes = model->roots; while (nodes) { FileModelNode *next = nodes->next; gboolean is_visible; gtk_tree_path_append_index (path, i); is_visible = file_model_node_is_visible (model, nodes); if (!is_visible && nodes->is_visible) { file_model_node_clear (model, nodes); gtk_tree_model_row_deleted (tree_model, path); nodes->is_visible = FALSE; } else if (is_visible && !nodes->is_visible) { GtkTreeIter iter; iter.user_data = nodes; gtk_tree_model_row_inserted (tree_model, path, &iter); nodes->is_visible = TRUE; } else model_refilter_recurse (model, nodes, path); if (is_visible) { has_children = TRUE; i++; } gtk_tree_path_up (path); nodes = next; } if (parent && (has_children != parent->has_children)) { GtkTreeIter iter; parent->has_children = has_children; iter.user_data = parent; gtk_tree_model_row_has_child_toggled (tree_model, path, &iter); } } /** * _gtk_file_system_model_set_show_hidden: * @model: a #GtkFileSystemModel * @show_hidden: whether hidden files should be displayed * * Sets whether hidden files should be included in the #GtkTreeModel * for display. **/ void _gtk_file_system_model_set_show_hidden (GtkFileSystemModel *model, gboolean show_hidden) { show_hidden = show_hidden != FALSE; if (show_hidden != model->show_hidden) { GtkTreePath *path; model->show_hidden = show_hidden; path = gtk_tree_path_new (); model_refilter_recurse (model, NULL, path); gtk_tree_path_free (path); } } /** * _gtk_file_system_model_set_show_folders: * @model: a #GtkFileSystemModel * @show_folders: whether folders should be displayed * * Sets whether folders should be included in the #GtkTreeModel for * display. **/ void _gtk_file_system_model_set_show_folders (GtkFileSystemModel *model, gboolean show_folders) { show_folders = show_folders != FALSE; if (show_folders != model->show_folders) { GtkTreePath *path; model->show_folders = show_folders; path = gtk_tree_path_new (); model_refilter_recurse (model, NULL, path); gtk_tree_path_free (path); } } /** * _gtk_file_system_model_set_show_files: * @model: a #GtkFileSystemModel * @show_files: whether files (as opposed to folders) should * be displayed. * * Sets whether files (as opposed to folders) should be included * in the #GtkTreeModel for display. **/ void _gtk_file_system_model_set_show_files (GtkFileSystemModel *model, gboolean show_files) { show_files = show_files != FALSE; if (show_files != model->show_files) { GtkTreePath *path; model->show_files = show_files; path = gtk_tree_path_new (); model_refilter_recurse (model, NULL, path); gtk_tree_path_free (path); } } /** * _gtk_file_system_model_get_info: * @model: a #GtkFileSystemModel * @iter: a #GtkTreeIter pointing to a row of @model * * Gets the #GtkFileInfo structure for a particular row * of @model. The information included in this structure * is determined by the @types parameter to * _gtk_file_system_model_new(). * * Return value: a #GtkFileInfo structure. This structure * is owned by @model and must not be modified or freed. * If you want to save the information for later use, * you must make a copy, since the structure may be * freed on later changes to the file system. **/ const GtkFileInfo * _gtk_file_system_model_get_info (GtkFileSystemModel *model, GtkTreeIter *iter) { return file_model_node_get_info (model, iter->user_data); } /** * _gtk_file_system_model_get_uri: * @model: a #GtkFileSystemModel * @iter: a #GtkTreeIter pointing to a row of @model * * Gets the URI for a particular row in @model. * * Return value: the URI. This string is owned by @model and * or freed. If you want to save the URI for later use, * you must make a copy, since the string may be freed * on later changes to the file system. **/ const gchar * _gtk_file_system_model_get_uri (GtkFileSystemModel *model, GtkTreeIter *iter) { FileModelNode *node = iter->user_data; return node->uri; } static void unref_node_and_parents (GtkFileSystemModel *model, FileModelNode *node) { file_model_node_unref (model, node); if (node->parent) file_model_node_unref (model, node->parent); } static FileModelNode * find_and_ref_uri (GtkFileSystemModel *model, const gchar *uri) { gchar *parent_uri; FileModelNode *parent_node; FileModelNode *children; if (!gtk_file_system_get_parent (model->file_system, uri, &parent_uri, NULL)) return NULL; if (parent_uri) { parent_node = find_and_ref_uri (model, parent_uri); g_free (parent_uri); if (!parent_node) return NULL; } else parent_node = NULL; if (parent_node) children = file_model_node_get_children (model, parent_node); else children = model->roots; while (children) { if (children->is_visible && strcmp (children->uri, uri) == 0) { file_model_node_ref (children); return children; } children = children->next; } if (parent_node) unref_node_and_parents (model, parent_node); return FALSE; } /** * _gtk_file_system_model_uri_do: * @model: a #GtkFileSystemModel * @uri: a URI pointing to a file in the filesystem * for @model. * @func: Function to call with the path and iter corresponding * to @uri. * @user_data: data to pass to @func * * Locates @uri within @model, referencing * (gtk_tree_model_ref_node ()) all parent nodes, * calls @func passing in the path and iter for @uri, * then unrefs all the parent nodes. * * The reason for doing this operation as a callback * is so that if the operation performed with the the * path and iter results in referencing the the node * and/or parent nodes, we don't load all the information * about the nodes. * * This function is particularly useful for expanding * a #GtkTreeView to a particular point in the file system. * * Return value: %TRUE if the URI was successfully * found in @model and @func was called. **/ gboolean _gtk_file_system_model_uri_do (GtkFileSystemModel *model, const gchar *uri, GtkFileSystemModelURIFunc func, gpointer user_data) { FileModelNode *node = find_and_ref_uri (model, uri); if (node) { GtkTreeIter iter; GtkTreePath *path; iter.user_data = node; path = gtk_tree_model_get_path (GTK_TREE_MODEL (model), &iter); (*func) (model, path, &iter, user_data); gtk_tree_path_free (path); unref_node_and_parents (model, node); return TRUE; } else return FALSE; } static gboolean dummy_idle_callback (GtkFileSystemModel *model) { GtkTreeModel *tree_model = GTK_TREE_MODEL (model); GSList *tmp_list; for (tmp_list = model->dummy_idle_nodes; tmp_list; tmp_list = tmp_list->next) { GtkTreeIter iter; GtkTreePath *path; FileModelNode *node = tmp_list->data; g_assert (node->children && !node->children->next && !node->children->children); iter.user_data = node->children; path = gtk_tree_model_get_path (tree_model, &iter); if (node->children->ref_count) gtk_tree_model_row_deleted (tree_model, path); gtk_tree_path_up (path); iter.user_data = node; gtk_tree_model_row_has_child_toggled (tree_model, path, &iter); gtk_tree_path_free (path); file_model_node_free (node->children); node->children = NULL; node->has_children = FALSE; node->has_dummy = FALSE; } model->dummy_idle_nodes = FALSE; model->dummy_idle = NULL; return FALSE; } static void queue_dummy_idle (GtkFileSystemModel *model, FileModelNode *node) { model->dummy_idle_nodes = g_slist_prepend (model->dummy_idle_nodes, node); if (!model->dummy_idle) { model->dummy_idle = g_idle_source_new (); g_source_set_priority (model->dummy_idle, G_PRIORITY_HIGH_IDLE); g_source_set_closure (model->dummy_idle, g_cclosure_new_object (G_CALLBACK (dummy_idle_callback), G_OBJECT (model))); g_source_attach (model->dummy_idle, NULL); } } static void unqueue_dummy_idle (GtkFileSystemModel *model, FileModelNode *node) { model->dummy_idle_nodes = g_slist_remove (model->dummy_idle_nodes, node); if (!model->dummy_idle_nodes) g_source_destroy (model->dummy_idle); } static FileModelNode * file_model_node_new (const gchar *uri) { FileModelNode *node = g_new0 (FileModelNode, 1); node->uri = g_strdup (uri); return node; } static void file_model_node_free (FileModelNode *node) { if (node->children) { FileModelNode *children; for (children = node->children; children; children = children->next) file_model_node_free (children); } if (node->uri) g_free (node->uri); if (node->info) gtk_file_info_free (node->info); if (node->folder) g_object_unref (node->folder); g_free (node); } static const GtkFileInfo * file_model_node_get_info (GtkFileSystemModel *model, FileModelNode *node) { if (!node->info) { if (node->parent && node->parent->has_dummy) { node->info = gtk_file_info_new (); gtk_file_info_set_display_name (node->info, "Loading..."); } else if (node->parent || model->root_folder) { node->info = gtk_file_folder_get_info (node->parent ? node->parent->folder : model->root_folder, node->uri, NULL); /* NULL-GError */ } else { node->info = gtk_file_system_get_root_info (model->file_system, node->uri, model->types, NULL); /* NULL-GError */ } } return node->info; } static gboolean file_model_node_is_visible (GtkFileSystemModel *model, FileModelNode *node) { if (model->show_hidden && model->show_folders && model->show_files) return TRUE; else { const GtkFileInfo *info = file_model_node_get_info (model, node); gboolean is_folder = gtk_file_info_get_is_folder (info); if (!model->show_folders && is_folder) return FALSE; if (!model->show_files && !is_folder) return FALSE; if (!model->show_hidden && gtk_file_info_get_is_hidden (info)) return FALSE; return TRUE; } } static void file_model_node_clear (GtkFileSystemModel *model, FileModelNode *node) { FileModelNode *children; if (node->has_dummy) unqueue_dummy_idle (model, node); if (node->folder) { g_object_unref (node->folder); node->folder = NULL; } children = node->children; node->children = NULL; node->has_children = FALSE; node->loaded = FALSE; while (children) { FileModelNode *next = children->next; file_model_node_clear (model, children); file_model_node_free (children); children = next; } node->ref_count = 0; } static void file_model_node_ref (FileModelNode *node) { node->ref_count++; } static void file_model_node_unref (GtkFileSystemModel *model, FileModelNode *node) { node->ref_count--; if (node->ref_count == 0) file_model_node_clear (model, node); } static FileModelNode * file_model_node_get_children (GtkFileSystemModel *model, FileModelNode *node) { if (node->ref_count == 0) return NULL; if (!node->loaded) { const GtkFileInfo *info = file_model_node_get_info (model, node); gboolean has_children = FALSE; gboolean is_folder = node->depth < model->max_depth && gtk_file_info_get_is_folder (info); if (is_folder) node->folder = gtk_file_system_get_folder (model->file_system, node->uri, model->types, NULL); /* NULL-GError */ if (node->folder) { GSList *child_uris, *tmp_list; if (gtk_file_folder_list_children (node->folder, &child_uris, NULL)) /* NULL-GError */ { child_uris = g_slist_sort (child_uris, (GCompareFunc)strcmp); for (tmp_list = child_uris; tmp_list; tmp_list = tmp_list->next) { FileModelNode *child_node = file_model_node_new (tmp_list->data); g_free (tmp_list->data); child_node->next = node->children; child_node->parent = node; child_node->depth = node->depth + 1; child_node->is_visible = file_model_node_is_visible (model, child_node); if (child_node->is_visible) has_children = TRUE; node->children = child_node; } g_slist_free (child_uris); } node->children = (FileModelNode *)g_slist_reverse ((GSList *)node->children); } node->has_children = has_children; if (is_folder && !node->has_children) { /* The hard case ... we claimed this folder had children, but actually * it didn't. We have to add a dummy child, then remove it later */ FileModelNode *child_node = file_model_node_new ("***dummy***"); child_node->is_visible = TRUE; child_node->parent = node; node->children = child_node; node->has_children = TRUE; node->has_dummy = TRUE; queue_dummy_idle (model, node); } node->loaded = TRUE; } return node->children; }