/* gtktreemodelsort.c * Copyright (C) 2000,2001 Red Hat, Inc., Jonathan Blandford * Copyright (C) 2001,2002 Kristian Rietveld * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library. If not, see . */ #include "config.h" #include #include "gtktreemodelsort.h" #include "gtktreesortable.h" #include "gtktreestore.h" #include "gtktreedatalist.h" #include "gtkintl.h" #include "gtkprivate.h" #include "gtktreednd.h" /** * SECTION:gtktreemodelsort * @Short_description: A GtkTreeModel which makes an underlying tree model sortable * @Title: GtkTreeModelSort * @See_also: #GtkTreeModel, #GtkListStore, #GtkTreeStore, #GtkTreeSortable, #GtkTreeModelFilter * * The #GtkTreeModelSort is a model which implements the #GtkTreeSortable * interface. It does not hold any data itself, but rather is created with * a child model and proxies its data. It has identical column types to * this child model, and the changes in the child are propagated. The * primary purpose of this model is to provide a way to sort a different * model without modifying it. Note that the sort function used by * #GtkTreeModelSort is not guaranteed to be stable. * * The use of this is best demonstrated through an example. In the * following sample code we create two #GtkTreeView widgets each with a * view of the same data. As the model is wrapped here by a * #GtkTreeModelSort, the two #GtkTreeViews can each sort their * view of the data without affecting the other. By contrast, if we * simply put the same model in each widget, then sorting the first would * sort the second. * * * Using a <structname>GtkTreeModelSort</structname> * * { * GtkTreeView *tree_view1; * GtkTreeView *tree_view2; * GtkTreeModel *sort_model1; * GtkTreeModel *sort_model2; * GtkTreeModel *child_model; * * // get the child model * child_model = get_my_model (); * * // Create the first tree * sort_model1 = gtk_tree_model_sort_new_with_model (child_model); * tree_view1 = gtk_tree_view_new_with_model (sort_model1); * * // Create the second tree * sort_model2 = gtk_tree_model_sort_new_with_model (child_model); * tree_view2 = gtk_tree_view_new_with_model (sort_model2); * * // Now we can sort the two models independently * gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (sort_model1), * COLUMN_1, GTK_SORT_ASCENDING); * gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (sort_model2), * COLUMN_1, GTK_SORT_DESCENDING); * } * * * * To demonstrate how to access the underlying child model from the sort * model, the next example will be a callback for the #GtkTreeSelection * #GtkTreeSelection::changed signal. In this callback, we get a string * from COLUMN_1 of the model. We then modify the string, find the same * selected row on the child model, and change the row there. * * * Accessing the child model of in a selection changed callback * * void * selection_changed (GtkTreeSelection *selection, gpointer data) * { * GtkTreeModel *sort_model = NULL; * GtkTreeModel *child_model; * GtkTreeIter sort_iter; * GtkTreeIter child_iter; * char *some_data = NULL; * char *modified_data; * * // Get the current selected row and the model. * if (! gtk_tree_selection_get_selected (selection, * &sort_model, * &sort_iter)) * return; * * /* Look up the current value on the selected row and get a new value * * to change it to. * */ * gtk_tree_model_get (GTK_TREE_MODEL (sort_model), &sort_iter, * COLUMN_1, &some_data, * -1); * * modified_data = change_the_data (some_data); * g_free (some_data); * * // Get an iterator on the child model, instead of the sort model. * gtk_tree_model_sort_convert_iter_to_child_iter (GTK_TREE_MODEL_SORT (sort_model), * &child_iter, * &sort_iter); * * /* Get the child model and change the value of the row. In this * * example, the child model is a GtkListStore. It could be any other * * type of model, though. * */ * child_model = gtk_tree_model_sort_get_model (GTK_TREE_MODEL_SORT (sort_model)); * gtk_list_store_set (GTK_LIST_STORE (child_model), &child_iter, * COLUMN_1, &modified_data, * -1); * g_free (modified_data); * } * * */ /* Notes on this implementation of GtkTreeModelSort * ================================================ * * Warnings * -------- * * In this code there is a potential for confusion as to whether an iter, * path or value refers to the GtkTreeModelSort model, or to the child model * that has been set. As a convention, variables referencing the child model * will have an s_ prefix before them (ie. s_iter, s_value, s_path); * Conversion of iterators and paths between GtkTreeModelSort and the child * model is done through the various gtk_tree_model_sort_convert_* functions. * * Iterator format * --------------- * * The iterator format of iterators handed out by GtkTreeModelSort is as * follows: * * iter->stamp = tree_model_sort->stamp * iter->user_data = SortLevel * iter->user_data2 = SortElt * * Internal data structure * ----------------------- * * Using SortLevel and SortElt, GtkTreeModelSort maintains a "cache" of * the mapping from GtkTreeModelSort nodes to nodes in the child model. * This is to avoid sorting a level each time an operation is requested * on GtkTreeModelSort, such as get iter, get path, get value. * * A SortElt corresponds to a single node. A node and its siblings are * stored in a SortLevel. The SortLevel keeps a reference to the parent * SortElt and its SortLevel (if any). The SortElt can have a "children" * pointer set, which points at a child level (a sub level). * * In a SortLevel, nodes are stored in a GSequence. The GSequence * allows for fast additions and removals, and supports sorting * the level of SortElt nodes. * * It is important to recognize the two different mappings that play * a part in this code: * I. The mapping from the client to this model. The order in which * nodes are stored in the GSequence is the order in which the * nodes are exposed to clients of the GtkTreeModelSort. * II. The mapping from this model to its child model. Each SortElt * contains an "offset" field which is the offset of the * corresponding node in the child model. * * Reference counting * ------------------ * * GtkTreeModelSort forwards all reference and unreference operations * to the corresponding node in the child model. The reference count * of each node is also maintained internally, in the "ref_count" * fields in SortElt and SortLevel. For each ref and unref operation on * a SortElt, the "ref_count" of the SortLevel is updated accordingly. * In addition, if a SortLevel has a parent, a reference is taken on * this parent. This happens in gtk_tree_model_sort_build_level() and * the reference is released again in gtk_tree_model_sort_free_level(). * This ensures that when GtkTreeModelSort takes a reference on a node * (for example during sorting), all parent nodes are referenced * according to reference counting rule 1, see the GtkTreeModel * documentation. * * When a level has a reference count of zero, which means that * none of the nodes in the level is referenced, the level has * a "zero ref count" on all its parents. As soon as the level * reaches a reference count of zero, the zero ref count value is * incremented by one on all parents of this level. Similarly, as * soon as the reference count of a level changes from zero, the * zero ref count value is decremented by one on all parents. * * The zero ref count value is used to clear unused portions of * the cache. If a SortElt has a zero ref count of one, then * its child level is unused and can be removed from the cache. * If the zero ref count value is higher than one, then the * child level contains sublevels which are unused as well. * gtk_tree_model_sort_clear_cache() uses this to not recurse * into levels which have a zero ref count of zero. */ typedef struct _SortElt SortElt; typedef struct _SortLevel SortLevel; typedef struct _SortData SortData; struct _SortElt { GtkTreeIter iter; SortLevel *children; gint offset; gint ref_count; gint zero_ref_count; GSequenceIter *siter; /* iter into seq */ gint old_index; /* used while sorting */ }; struct _SortLevel { GSequence *seq; gint ref_count; SortElt *parent_elt; SortLevel *parent_level; }; struct _SortData { GtkTreeModelSort *tree_model_sort; GtkTreeIterCompareFunc sort_func; gpointer sort_data; GtkTreePath *parent_path; gint parent_path_depth; gint *parent_path_indices; }; /* Properties */ enum { PROP_0, /* Construct args */ PROP_MODEL }; struct _GtkTreeModelSortPrivate { gpointer root; gint stamp; guint child_flags; GtkTreeModel *child_model; gint zero_ref_count; /* sort information */ GList *sort_list; gint sort_column_id; GtkSortType order; /* default sort */ GtkTreeIterCompareFunc default_sort_func; gpointer default_sort_data; GDestroyNotify default_sort_destroy; /* signal ids */ gulong changed_id; gulong inserted_id; gulong has_child_toggled_id; gulong deleted_id; gulong reordered_id; }; /* Set this to 0 to disable caching of child iterators. This * allows for more stringent testing. It is recommended to set this * to one when refactoring this code and running the unit tests to * catch more errors. */ #if 1 # define GTK_TREE_MODEL_SORT_CACHE_CHILD_ITERS(tree_model_sort) \ (((GtkTreeModelSort *)tree_model_sort)->priv->child_flags>K_TREE_MODEL_ITERS_PERSIST) #else # define GTK_TREE_MODEL_SORT_CACHE_CHILD_ITERS(tree_model_sort) (FALSE) #endif #define SORT_ELT(sort_elt) ((SortElt *)sort_elt) #define SORT_LEVEL(sort_level) ((SortLevel *)sort_level) #define GET_ELT(siter) ((SortElt *) (siter ? g_sequence_get (siter) : NULL)) #define GET_CHILD_ITER(tree_model_sort,ch_iter,so_iter) gtk_tree_model_sort_convert_iter_to_child_iter((GtkTreeModelSort*)(tree_model_sort), (ch_iter), (so_iter)); #define NO_SORT_FUNC ((GtkTreeIterCompareFunc) 0x1) #define VALID_ITER(iter, tree_model_sort) ((iter) != NULL && (iter)->user_data != NULL && (iter)->user_data2 != NULL && (tree_model_sort)->priv->stamp == (iter)->stamp) /* general (object/interface init, etc) */ static void gtk_tree_model_sort_tree_model_init (GtkTreeModelIface *iface); static void gtk_tree_model_sort_tree_sortable_init (GtkTreeSortableIface *iface); static void gtk_tree_model_sort_drag_source_init (GtkTreeDragSourceIface*iface); static void gtk_tree_model_sort_finalize (GObject *object); static void gtk_tree_model_sort_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gtk_tree_model_sort_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); /* our signal handlers */ static void gtk_tree_model_sort_row_changed (GtkTreeModel *model, GtkTreePath *start_path, GtkTreeIter *start_iter, gpointer data); static void gtk_tree_model_sort_row_inserted (GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter, gpointer data); static void gtk_tree_model_sort_row_has_child_toggled (GtkTreeModel *model, GtkTreePath *path, GtkTreeIter *iter, gpointer data); static void gtk_tree_model_sort_row_deleted (GtkTreeModel *model, GtkTreePath *path, gpointer data); static void gtk_tree_model_sort_rows_reordered (GtkTreeModel *s_model, GtkTreePath *s_path, GtkTreeIter *s_iter, gint *new_order, gpointer data); /* TreeModel interface */ static GtkTreeModelFlags gtk_tree_model_sort_get_flags (GtkTreeModel *tree_model); static gint gtk_tree_model_sort_get_n_columns (GtkTreeModel *tree_model); static GType gtk_tree_model_sort_get_column_type (GtkTreeModel *tree_model, gint index); static gboolean gtk_tree_model_sort_get_iter (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreePath *path); static GtkTreePath *gtk_tree_model_sort_get_path (GtkTreeModel *tree_model, GtkTreeIter *iter); static void gtk_tree_model_sort_get_value (GtkTreeModel *tree_model, GtkTreeIter *iter, gint column, GValue *value); static gboolean gtk_tree_model_sort_iter_next (GtkTreeModel *tree_model, GtkTreeIter *iter); static gboolean gtk_tree_model_sort_iter_previous (GtkTreeModel *tree_model, GtkTreeIter *iter); static gboolean gtk_tree_model_sort_iter_children (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *parent); static gboolean gtk_tree_model_sort_iter_has_child (GtkTreeModel *tree_model, GtkTreeIter *iter); static gint gtk_tree_model_sort_iter_n_children (GtkTreeModel *tree_model, GtkTreeIter *iter); static gboolean gtk_tree_model_sort_iter_nth_child (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *parent, gint n); static gboolean gtk_tree_model_sort_iter_parent (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *child); static void gtk_tree_model_sort_ref_node (GtkTreeModel *tree_model, GtkTreeIter *iter); static void gtk_tree_model_sort_real_unref_node (GtkTreeModel *tree_model, GtkTreeIter *iter, gboolean propagate_unref); static void gtk_tree_model_sort_unref_node (GtkTreeModel *tree_model, GtkTreeIter *iter); /* TreeDragSource interface */ static gboolean gtk_tree_model_sort_row_draggable (GtkTreeDragSource *drag_source, GtkTreePath *path); static gboolean gtk_tree_model_sort_drag_data_get (GtkTreeDragSource *drag_source, GtkTreePath *path, GtkSelectionData *selection_data); static gboolean gtk_tree_model_sort_drag_data_delete (GtkTreeDragSource *drag_source, GtkTreePath *path); /* TreeSortable interface */ static gboolean gtk_tree_model_sort_get_sort_column_id (GtkTreeSortable *sortable, gint *sort_column_id, GtkSortType *order); static void gtk_tree_model_sort_set_sort_column_id (GtkTreeSortable *sortable, gint sort_column_id, GtkSortType order); static void gtk_tree_model_sort_set_sort_func (GtkTreeSortable *sortable, gint sort_column_id, GtkTreeIterCompareFunc func, gpointer data, GDestroyNotify destroy); static void gtk_tree_model_sort_set_default_sort_func (GtkTreeSortable *sortable, GtkTreeIterCompareFunc func, gpointer data, GDestroyNotify destroy); static gboolean gtk_tree_model_sort_has_default_sort_func (GtkTreeSortable *sortable); /* Private functions (sort funcs, level handling and other utils) */ static void gtk_tree_model_sort_build_level (GtkTreeModelSort *tree_model_sort, SortLevel *parent_level, SortElt *parent_elt); static void gtk_tree_model_sort_free_level (GtkTreeModelSort *tree_model_sort, SortLevel *sort_level, gboolean unref); static void gtk_tree_model_sort_increment_stamp (GtkTreeModelSort *tree_model_sort); static void gtk_tree_model_sort_sort_level (GtkTreeModelSort *tree_model_sort, SortLevel *level, gboolean recurse, gboolean emit_reordered); static void gtk_tree_model_sort_sort (GtkTreeModelSort *tree_model_sort); static gboolean gtk_tree_model_sort_insert_value (GtkTreeModelSort *tree_model_sort, SortLevel *level, GtkTreePath *s_path, GtkTreeIter *s_iter); static GtkTreePath *gtk_tree_model_sort_elt_get_path (SortLevel *level, SortElt *elt); static void gtk_tree_model_sort_set_model (GtkTreeModelSort *tree_model_sort, GtkTreeModel *child_model); static GtkTreePath *gtk_real_tree_model_sort_convert_child_path_to_path (GtkTreeModelSort *tree_model_sort, GtkTreePath *child_path, gboolean build_levels); static gint gtk_tree_model_sort_compare_func (gconstpointer a, gconstpointer b, gpointer user_data); static gint gtk_tree_model_sort_offset_compare_func (gconstpointer a, gconstpointer b, gpointer user_data); static void gtk_tree_model_sort_clear_cache_helper (GtkTreeModelSort *tree_model_sort, SortLevel *level); G_DEFINE_TYPE_WITH_CODE (GtkTreeModelSort, gtk_tree_model_sort, G_TYPE_OBJECT, G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_MODEL, gtk_tree_model_sort_tree_model_init) G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_SORTABLE, gtk_tree_model_sort_tree_sortable_init) G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_DRAG_SOURCE, gtk_tree_model_sort_drag_source_init)) static void gtk_tree_model_sort_init (GtkTreeModelSort *tree_model_sort) { GtkTreeModelSortPrivate *priv; priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_model_sort, GTK_TYPE_TREE_MODEL_SORT, GtkTreeModelSortPrivate); tree_model_sort->priv = priv; priv->sort_column_id = GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID; priv->stamp = 0; priv->zero_ref_count = 0; priv->root = NULL; priv->sort_list = NULL; } static void gtk_tree_model_sort_class_init (GtkTreeModelSortClass *class) { GObjectClass *object_class; object_class = (GObjectClass *) class; object_class->set_property = gtk_tree_model_sort_set_property; object_class->get_property = gtk_tree_model_sort_get_property; object_class->finalize = gtk_tree_model_sort_finalize; /* Properties */ g_object_class_install_property (object_class, PROP_MODEL, g_param_spec_object ("model", P_("TreeModelSort Model"), P_("The model for the TreeModelSort to sort"), GTK_TYPE_TREE_MODEL, GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY)); g_type_class_add_private (class, sizeof (GtkTreeModelSortPrivate)); } static void gtk_tree_model_sort_tree_model_init (GtkTreeModelIface *iface) { iface->get_flags = gtk_tree_model_sort_get_flags; iface->get_n_columns = gtk_tree_model_sort_get_n_columns; iface->get_column_type = gtk_tree_model_sort_get_column_type; iface->get_iter = gtk_tree_model_sort_get_iter; iface->get_path = gtk_tree_model_sort_get_path; iface->get_value = gtk_tree_model_sort_get_value; iface->iter_next = gtk_tree_model_sort_iter_next; iface->iter_previous = gtk_tree_model_sort_iter_previous; iface->iter_children = gtk_tree_model_sort_iter_children; iface->iter_has_child = gtk_tree_model_sort_iter_has_child; iface->iter_n_children = gtk_tree_model_sort_iter_n_children; iface->iter_nth_child = gtk_tree_model_sort_iter_nth_child; iface->iter_parent = gtk_tree_model_sort_iter_parent; iface->ref_node = gtk_tree_model_sort_ref_node; iface->unref_node = gtk_tree_model_sort_unref_node; } static void gtk_tree_model_sort_tree_sortable_init (GtkTreeSortableIface *iface) { iface->get_sort_column_id = gtk_tree_model_sort_get_sort_column_id; iface->set_sort_column_id = gtk_tree_model_sort_set_sort_column_id; iface->set_sort_func = gtk_tree_model_sort_set_sort_func; iface->set_default_sort_func = gtk_tree_model_sort_set_default_sort_func; iface->has_default_sort_func = gtk_tree_model_sort_has_default_sort_func; } static void gtk_tree_model_sort_drag_source_init (GtkTreeDragSourceIface *iface) { iface->row_draggable = gtk_tree_model_sort_row_draggable; iface->drag_data_delete = gtk_tree_model_sort_drag_data_delete; iface->drag_data_get = gtk_tree_model_sort_drag_data_get; } /** * gtk_tree_model_sort_new_with_model: * @child_model: A #GtkTreeModel * * Creates a new #GtkTreeModel, with @child_model as the child model. * * Return value: (transfer full): A new #GtkTreeModel. */ GtkTreeModel * gtk_tree_model_sort_new_with_model (GtkTreeModel *child_model) { GtkTreeModel *retval; g_return_val_if_fail (GTK_IS_TREE_MODEL (child_model), NULL); retval = g_object_new (gtk_tree_model_sort_get_type (), NULL); gtk_tree_model_sort_set_model (GTK_TREE_MODEL_SORT (retval), child_model); return retval; } /* GObject callbacks */ static void gtk_tree_model_sort_finalize (GObject *object) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) object; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; gtk_tree_model_sort_set_model (tree_model_sort, NULL); if (priv->root) gtk_tree_model_sort_free_level (tree_model_sort, priv->root, TRUE); if (priv->sort_list) { _gtk_tree_data_list_header_free (priv->sort_list); priv->sort_list = NULL; } if (priv->default_sort_destroy) { priv->default_sort_destroy (priv->default_sort_data); priv->default_sort_destroy = NULL; priv->default_sort_data = NULL; } /* must chain up */ G_OBJECT_CLASS (gtk_tree_model_sort_parent_class)->finalize (object); } static void gtk_tree_model_sort_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkTreeModelSort *tree_model_sort = GTK_TREE_MODEL_SORT (object); switch (prop_id) { case PROP_MODEL: gtk_tree_model_sort_set_model (tree_model_sort, g_value_get_object (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_tree_model_sort_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkTreeModelSort *tree_model_sort = GTK_TREE_MODEL_SORT (object); switch (prop_id) { case PROP_MODEL: g_value_set_object (value, gtk_tree_model_sort_get_model (tree_model_sort)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } /* helpers */ static SortElt * sort_elt_new (void) { return g_slice_new (SortElt); } static void sort_elt_free (gpointer elt) { g_slice_free (SortElt, elt); } static void increase_offset_iter (gpointer data, gpointer user_data) { SortElt *elt = data; gint offset = GPOINTER_TO_INT (user_data); if (elt->offset >= offset) elt->offset++; } static void decrease_offset_iter (gpointer data, gpointer user_data) { SortElt *elt = data; gint offset = GPOINTER_TO_INT (user_data); if (elt->offset > offset) elt->offset--; } static void fill_sort_data (SortData *data, GtkTreeModelSort *tree_model_sort, SortLevel *level) { GtkTreeModelSortPrivate *priv = tree_model_sort->priv; data->tree_model_sort = tree_model_sort; if (priv->sort_column_id != GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID) { GtkTreeDataSortHeader *header; header = _gtk_tree_data_list_get_header (priv->sort_list, priv->sort_column_id); g_return_if_fail (header != NULL); g_return_if_fail (header->func != NULL); data->sort_func = header->func; data->sort_data = header->data; } else { /* absolutely SHOULD NOT happen: */ g_return_if_fail (priv->default_sort_func != NULL); data->sort_func = priv->default_sort_func; data->sort_data = priv->default_sort_data; } if (level->parent_elt) { data->parent_path = gtk_tree_model_sort_elt_get_path (level->parent_level, level->parent_elt); gtk_tree_path_append_index (data->parent_path, 0); } else { data->parent_path = gtk_tree_path_new_first (); } data->parent_path_depth = gtk_tree_path_get_depth (data->parent_path); data->parent_path_indices = gtk_tree_path_get_indices (data->parent_path); } static void free_sort_data (SortData *data) { gtk_tree_path_free (data->parent_path); } static SortElt * lookup_elt_with_offset (GtkTreeModelSort *tree_model_sort, SortLevel *level, gint offset, GSequenceIter **ret_siter) { GSequenceIter *siter, *end_siter; /* FIXME: We have to do a search like this, because the sequence is not * (always) sorted on offset order. Perhaps we should introduce a * second sequence which is sorted on offset order. */ end_siter = g_sequence_get_end_iter (level->seq); for (siter = g_sequence_get_begin_iter (level->seq); siter != end_siter; siter = g_sequence_iter_next (siter)) { SortElt *elt = g_sequence_get (siter); if (elt->offset == offset) break; } if (ret_siter) *ret_siter = siter; return GET_ELT (siter); } static void gtk_tree_model_sort_row_changed (GtkTreeModel *s_model, GtkTreePath *start_s_path, GtkTreeIter *start_s_iter, gpointer data) { GtkTreeModelSort *tree_model_sort = GTK_TREE_MODEL_SORT (data); GtkTreeModelSortPrivate *priv = tree_model_sort->priv; GtkTreePath *path = NULL; GtkTreeIter iter; GtkTreeIter tmpiter; SortElt *elt; SortLevel *level; SortData sort_data; gboolean free_s_path = FALSE; gint index = 0, old_index; g_return_if_fail (start_s_path != NULL || start_s_iter != NULL); if (!start_s_path) { free_s_path = TRUE; start_s_path = gtk_tree_model_get_path (s_model, start_s_iter); } path = gtk_real_tree_model_sort_convert_child_path_to_path (tree_model_sort, start_s_path, FALSE); if (!path) { if (free_s_path) gtk_tree_path_free (start_s_path); return; } gtk_tree_model_get_iter (GTK_TREE_MODEL (data), &iter, path); gtk_tree_model_sort_ref_node (GTK_TREE_MODEL (data), &iter); level = iter.user_data; elt = iter.user_data2; if (g_sequence_get_length (level->seq) < 2 || (priv->sort_column_id == GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID && priv->default_sort_func == NO_SORT_FUNC)) { if (free_s_path) gtk_tree_path_free (start_s_path); gtk_tree_model_row_changed (GTK_TREE_MODEL (data), path, &iter); gtk_tree_model_sort_unref_node (GTK_TREE_MODEL (data), &iter); gtk_tree_path_free (path); return; } if (GTK_TREE_MODEL_SORT_CACHE_CHILD_ITERS (tree_model_sort)) tmpiter = elt->iter; else gtk_tree_model_get_iter (priv->child_model, &tmpiter, start_s_path); old_index = g_sequence_iter_get_position (elt->siter); fill_sort_data (&sort_data, tree_model_sort, level); g_sequence_sort_changed (elt->siter, gtk_tree_model_sort_compare_func, &sort_data); free_sort_data (&sort_data); index = g_sequence_iter_get_position (elt->siter); /* Prepare the path for signal emission */ gtk_tree_path_up (path); gtk_tree_path_append_index (path, index); gtk_tree_model_sort_increment_stamp (tree_model_sort); /* if the item moved, then emit rows_reordered */ if (old_index != index) { gint *new_order; gint j; GtkTreePath *tmppath; new_order = g_new (gint, g_sequence_get_length (level->seq)); for (j = 0; j < g_sequence_get_length (level->seq); j++) { if (index > old_index) { if (j == index) new_order[j] = old_index; else if (j >= old_index && j < index) new_order[j] = j + 1; else new_order[j] = j; } else if (index < old_index) { if (j == index) new_order[j] = old_index; else if (j > index && j <= old_index) new_order[j] = j - 1; else new_order[j] = j; } /* else? shouldn't really happen */ } if (level->parent_elt) { iter.stamp = priv->stamp; iter.user_data = level->parent_level; iter.user_data2 = level->parent_elt; tmppath = gtk_tree_model_get_path (GTK_TREE_MODEL (tree_model_sort), &iter); gtk_tree_model_rows_reordered (GTK_TREE_MODEL (tree_model_sort), tmppath, &iter, new_order); } else { /* toplevel */ tmppath = gtk_tree_path_new (); gtk_tree_model_rows_reordered (GTK_TREE_MODEL (tree_model_sort), tmppath, NULL, new_order); } gtk_tree_path_free (tmppath); g_free (new_order); } /* emit row_changed signal (at new location) */ gtk_tree_model_get_iter (GTK_TREE_MODEL (data), &iter, path); gtk_tree_model_row_changed (GTK_TREE_MODEL (data), path, &iter); gtk_tree_model_sort_unref_node (GTK_TREE_MODEL (data), &iter); gtk_tree_path_free (path); if (free_s_path) gtk_tree_path_free (start_s_path); } static void gtk_tree_model_sort_row_inserted (GtkTreeModel *s_model, GtkTreePath *s_path, GtkTreeIter *s_iter, gpointer data) { GtkTreeModelSort *tree_model_sort = GTK_TREE_MODEL_SORT (data); GtkTreeModelSortPrivate *priv = tree_model_sort->priv; GtkTreePath *path; GtkTreeIter iter; GtkTreeIter real_s_iter; gint i = 0; gboolean free_s_path = FALSE; SortElt *elt; SortLevel *level; SortLevel *parent_level = NULL; parent_level = level = SORT_LEVEL (priv->root); g_return_if_fail (s_path != NULL || s_iter != NULL); if (!s_path) { s_path = gtk_tree_model_get_path (s_model, s_iter); free_s_path = TRUE; } if (!s_iter) gtk_tree_model_get_iter (s_model, &real_s_iter, s_path); else real_s_iter = *s_iter; if (!priv->root) { gtk_tree_model_sort_build_level (tree_model_sort, NULL, NULL); /* the build level already put the inserted iter in the level, so no need to handle this signal anymore */ goto done_and_submit; } /* find the parent level */ while (i < gtk_tree_path_get_depth (s_path) - 1) { if (!level) { /* level not yet build, we won't cover this signal */ goto done; } if (g_sequence_get_length (level->seq) < gtk_tree_path_get_indices (s_path)[i]) { g_warning ("%s: A node was inserted with a parent that's not in the tree.\n" "This possibly means that a GtkTreeModel inserted a child node\n" "before the parent was inserted.", G_STRLOC); goto done; } elt = lookup_elt_with_offset (tree_model_sort, level, gtk_tree_path_get_indices (s_path)[i], NULL); g_return_if_fail (elt != NULL); if (!elt->children) { /* not covering this signal */ goto done; } level = elt->children; parent_level = level; i++; } if (!parent_level) goto done; if (level->ref_count == 0 && level != priv->root) { gtk_tree_model_sort_free_level (tree_model_sort, level, TRUE); goto done; } if (!gtk_tree_model_sort_insert_value (tree_model_sort, parent_level, s_path, &real_s_iter)) goto done; done_and_submit: path = gtk_real_tree_model_sort_convert_child_path_to_path (tree_model_sort, s_path, FALSE); if (!path) return; gtk_tree_model_sort_increment_stamp (tree_model_sort); gtk_tree_model_get_iter (GTK_TREE_MODEL (data), &iter, path); gtk_tree_model_row_inserted (GTK_TREE_MODEL (data), path, &iter); gtk_tree_path_free (path); done: if (free_s_path) gtk_tree_path_free (s_path); return; } static void gtk_tree_model_sort_row_has_child_toggled (GtkTreeModel *s_model, GtkTreePath *s_path, GtkTreeIter *s_iter, gpointer data) { GtkTreeModelSort *tree_model_sort = GTK_TREE_MODEL_SORT (data); GtkTreePath *path; GtkTreeIter iter; g_return_if_fail (s_path != NULL && s_iter != NULL); path = gtk_real_tree_model_sort_convert_child_path_to_path (tree_model_sort, s_path, FALSE); if (path == NULL) return; gtk_tree_model_get_iter (GTK_TREE_MODEL (data), &iter, path); gtk_tree_model_row_has_child_toggled (GTK_TREE_MODEL (data), path, &iter); gtk_tree_path_free (path); } static void gtk_tree_model_sort_row_deleted (GtkTreeModel *s_model, GtkTreePath *s_path, gpointer data) { GtkTreeModelSort *tree_model_sort = GTK_TREE_MODEL_SORT (data); GtkTreePath *path = NULL; SortElt *elt; SortLevel *level; GtkTreeIter iter; gint offset; g_return_if_fail (s_path != NULL); path = gtk_real_tree_model_sort_convert_child_path_to_path (tree_model_sort, s_path, FALSE); if (path == NULL) return; gtk_tree_model_get_iter (GTK_TREE_MODEL (data), &iter, path); level = SORT_LEVEL (iter.user_data); elt = SORT_ELT (iter.user_data2); offset = elt->offset; gtk_tree_model_get_iter (GTK_TREE_MODEL (data), &iter, path); while (elt->ref_count > 0) gtk_tree_model_sort_real_unref_node (GTK_TREE_MODEL (data), &iter, FALSE); /* If this node has children, we free the level (recursively) here * and specify that unref may not be used, because parent and its * children have been removed by now. */ if (elt->children) gtk_tree_model_sort_free_level (tree_model_sort, elt->children, FALSE); if (level->ref_count == 0 && g_sequence_get_length (level->seq) == 1) { gtk_tree_model_sort_increment_stamp (tree_model_sort); gtk_tree_model_row_deleted (GTK_TREE_MODEL (data), path); gtk_tree_path_free (path); if (level == tree_model_sort->priv->root) { gtk_tree_model_sort_free_level (tree_model_sort, tree_model_sort->priv->root, TRUE); tree_model_sort->priv->root = NULL; } return; } g_sequence_remove (elt->siter); elt = NULL; /* The sequence is not ordered on offset, so we traverse the entire * sequence. */ g_sequence_foreach (level->seq, decrease_offset_iter, GINT_TO_POINTER (offset)); gtk_tree_model_sort_increment_stamp (tree_model_sort); gtk_tree_model_row_deleted (GTK_TREE_MODEL (data), path); gtk_tree_path_free (path); } static void gtk_tree_model_sort_rows_reordered (GtkTreeModel *s_model, GtkTreePath *s_path, GtkTreeIter *s_iter, gint *new_order, gpointer data) { SortElt *elt; SortLevel *level; GtkTreeIter iter; gint *tmp_array; int i, length; GtkTreePath *path; GSequenceIter *siter, *end_siter; GtkTreeModelSort *tree_model_sort = GTK_TREE_MODEL_SORT (data); GtkTreeModelSortPrivate *priv = tree_model_sort->priv; g_return_if_fail (new_order != NULL); if (s_path == NULL || gtk_tree_path_get_depth (s_path) == 0) { if (priv->root == NULL) return; path = gtk_tree_path_new (); level = SORT_LEVEL (priv->root); } else { path = gtk_real_tree_model_sort_convert_child_path_to_path (tree_model_sort, s_path, FALSE); if (path == NULL) return; gtk_tree_model_get_iter (GTK_TREE_MODEL (data), &iter, path); elt = SORT_ELT (iter.user_data2); if (!elt->children) { gtk_tree_path_free (path); return; } level = elt->children; } length = g_sequence_get_length (level->seq); if (length < 2) { gtk_tree_path_free (path); return; } tmp_array = g_new (int, length); /* FIXME: I need to think about whether this can be done in a more * efficient way? */ i = 0; end_siter = g_sequence_get_end_iter (level->seq); for (siter = g_sequence_get_begin_iter (level->seq); siter != end_siter; siter = g_sequence_iter_next (siter)) { gint j; SortElt *elt = g_sequence_get (siter); for (j = 0; j < length; j++) { if (elt->offset == new_order[j]) tmp_array[i] = j; } i++; } /* This loop cannot be merged with the above loop nest, because that * would introduce duplicate offsets. */ i = 0; end_siter = g_sequence_get_end_iter (level->seq); for (siter = g_sequence_get_begin_iter (level->seq); siter != end_siter; siter = g_sequence_iter_next (siter)) { SortElt *elt = g_sequence_get (siter); elt->offset = tmp_array[i]; i++; } g_free (tmp_array); if (priv->sort_column_id == GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID && priv->default_sort_func == NO_SORT_FUNC) { gtk_tree_model_sort_sort_level (tree_model_sort, level, FALSE, FALSE); gtk_tree_model_sort_increment_stamp (tree_model_sort); if (gtk_tree_path_get_depth (path)) { gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_model_sort), &iter, path); gtk_tree_model_rows_reordered (GTK_TREE_MODEL (tree_model_sort), path, &iter, new_order); } else { gtk_tree_model_rows_reordered (GTK_TREE_MODEL (tree_model_sort), path, NULL, new_order); } } gtk_tree_path_free (path); } /* Fulfill our model requirements */ static GtkTreeModelFlags gtk_tree_model_sort_get_flags (GtkTreeModel *tree_model) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) tree_model; GtkTreeModelFlags flags; g_return_val_if_fail (tree_model_sort->priv->child_model != NULL, 0); flags = gtk_tree_model_get_flags (tree_model_sort->priv->child_model); if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY) return GTK_TREE_MODEL_LIST_ONLY; return 0; } static gint gtk_tree_model_sort_get_n_columns (GtkTreeModel *tree_model) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) tree_model; if (tree_model_sort->priv->child_model == 0) return 0; return gtk_tree_model_get_n_columns (tree_model_sort->priv->child_model); } static GType gtk_tree_model_sort_get_column_type (GtkTreeModel *tree_model, gint index) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) tree_model; g_return_val_if_fail (tree_model_sort->priv->child_model != NULL, G_TYPE_INVALID); return gtk_tree_model_get_column_type (tree_model_sort->priv->child_model, index); } static gboolean gtk_tree_model_sort_get_iter (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreePath *path) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) tree_model; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; gint *indices; SortElt *elt; SortLevel *level; gint depth, i; GSequenceIter *siter; g_return_val_if_fail (priv->child_model != NULL, FALSE); indices = gtk_tree_path_get_indices (path); if (priv->root == NULL) gtk_tree_model_sort_build_level (tree_model_sort, NULL, NULL); level = SORT_LEVEL (priv->root); depth = gtk_tree_path_get_depth (path); if (depth == 0) { iter->stamp = 0; return FALSE; } for (i = 0; i < depth - 1; i++) { if ((level == NULL) || (indices[i] >= g_sequence_get_length (level->seq))) { iter->stamp = 0; return FALSE; } siter = g_sequence_get_iter_at_pos (level->seq, indices[i]); if (g_sequence_iter_is_end (siter)) { iter->stamp = 0; return FALSE; } elt = GET_ELT (siter); if (elt->children == NULL) gtk_tree_model_sort_build_level (tree_model_sort, level, elt); level = elt->children; } if (!level || indices[i] >= g_sequence_get_length (level->seq)) { iter->stamp = 0; return FALSE; } iter->stamp = priv->stamp; iter->user_data = level; siter = g_sequence_get_iter_at_pos (level->seq, indices[depth - 1]); if (g_sequence_iter_is_end (siter)) { iter->stamp = 0; return FALSE; } iter->user_data2 = GET_ELT (siter); return TRUE; } static GtkTreePath * gtk_tree_model_sort_get_path (GtkTreeModel *tree_model, GtkTreeIter *iter) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) tree_model; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; GtkTreePath *retval; SortLevel *level; SortElt *elt; g_return_val_if_fail (priv->child_model != NULL, NULL); g_return_val_if_fail (priv->stamp == iter->stamp, NULL); retval = gtk_tree_path_new (); level = SORT_LEVEL (iter->user_data); elt = SORT_ELT (iter->user_data2); while (level) { gint index; index = g_sequence_iter_get_position (elt->siter); gtk_tree_path_prepend_index (retval, index); elt = level->parent_elt; level = level->parent_level; } return retval; } static void gtk_tree_model_sort_get_value (GtkTreeModel *tree_model, GtkTreeIter *iter, gint column, GValue *value) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) tree_model; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; GtkTreeIter child_iter; g_return_if_fail (priv->child_model != NULL); g_return_if_fail (VALID_ITER (iter, tree_model_sort)); GET_CHILD_ITER (tree_model_sort, &child_iter, iter); gtk_tree_model_get_value (priv->child_model, &child_iter, column, value); } static gboolean gtk_tree_model_sort_iter_next (GtkTreeModel *tree_model, GtkTreeIter *iter) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) tree_model; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; SortElt *elt; GSequenceIter *siter; g_return_val_if_fail (priv->child_model != NULL, FALSE); g_return_val_if_fail (priv->stamp == iter->stamp, FALSE); elt = iter->user_data2; siter = g_sequence_iter_next (elt->siter); if (g_sequence_iter_is_end (siter)) { iter->stamp = 0; return FALSE; } iter->user_data2 = GET_ELT (siter); return TRUE; } static gboolean gtk_tree_model_sort_iter_previous (GtkTreeModel *tree_model, GtkTreeIter *iter) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) tree_model; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; SortElt *elt; GSequenceIter *siter; g_return_val_if_fail (priv->child_model != NULL, FALSE); g_return_val_if_fail (priv->stamp == iter->stamp, FALSE); elt = iter->user_data2; if (g_sequence_iter_is_begin (elt->siter)) { iter->stamp = 0; return FALSE; } siter = g_sequence_iter_prev (elt->siter); iter->user_data2 = GET_ELT (siter); return TRUE; } static gboolean gtk_tree_model_sort_iter_children (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *parent) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) tree_model; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; SortLevel *level; iter->stamp = 0; g_return_val_if_fail (priv->child_model != NULL, FALSE); if (parent) g_return_val_if_fail (VALID_ITER (parent, tree_model_sort), FALSE); if (parent == NULL) { if (priv->root == NULL) gtk_tree_model_sort_build_level (tree_model_sort, NULL, NULL); if (priv->root == NULL) return FALSE; level = priv->root; iter->stamp = priv->stamp; iter->user_data = level; iter->user_data2 = g_sequence_get (g_sequence_get_begin_iter (level->seq)); } else { SortElt *elt; level = SORT_LEVEL (parent->user_data); elt = SORT_ELT (parent->user_data2); if (elt->children == NULL) gtk_tree_model_sort_build_level (tree_model_sort, level, elt); if (elt->children == NULL) return FALSE; iter->stamp = priv->stamp; iter->user_data = elt->children; iter->user_data2 = g_sequence_get (g_sequence_get_begin_iter (elt->children->seq)); } return TRUE; } static gboolean gtk_tree_model_sort_iter_has_child (GtkTreeModel *tree_model, GtkTreeIter *iter) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) tree_model; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; GtkTreeIter child_iter; g_return_val_if_fail (priv->child_model != NULL, FALSE); g_return_val_if_fail (VALID_ITER (iter, tree_model_sort), FALSE); GET_CHILD_ITER (tree_model_sort, &child_iter, iter); return gtk_tree_model_iter_has_child (priv->child_model, &child_iter); } static gint gtk_tree_model_sort_iter_n_children (GtkTreeModel *tree_model, GtkTreeIter *iter) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) tree_model; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; GtkTreeIter child_iter; g_return_val_if_fail (priv->child_model != NULL, 0); if (iter) g_return_val_if_fail (VALID_ITER (iter, tree_model_sort), 0); if (iter == NULL) return gtk_tree_model_iter_n_children (priv->child_model, NULL); GET_CHILD_ITER (tree_model_sort, &child_iter, iter); return gtk_tree_model_iter_n_children (priv->child_model, &child_iter); } static gboolean gtk_tree_model_sort_iter_nth_child (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *parent, gint n) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) tree_model; SortLevel *level; /* We have this for the iter == parent case */ GtkTreeIter children; if (parent) g_return_val_if_fail (VALID_ITER (parent, tree_model_sort), FALSE); /* Use this instead of has_child to force us to build the level, if needed */ if (gtk_tree_model_sort_iter_children (tree_model, &children, parent) == FALSE) { iter->stamp = 0; return FALSE; } level = children.user_data; if (n >= g_sequence_get_length (level->seq)) { iter->stamp = 0; return FALSE; } iter->stamp = tree_model_sort->priv->stamp; iter->user_data = level; iter->user_data2 = g_sequence_get (g_sequence_get_iter_at_pos (level->seq, n)); return TRUE; } static gboolean gtk_tree_model_sort_iter_parent (GtkTreeModel *tree_model, GtkTreeIter *iter, GtkTreeIter *child) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) tree_model; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; SortLevel *level; iter->stamp = 0; g_return_val_if_fail (priv->child_model != NULL, FALSE); g_return_val_if_fail (VALID_ITER (child, tree_model_sort), FALSE); level = child->user_data; if (level->parent_level) { iter->stamp = priv->stamp; iter->user_data = level->parent_level; iter->user_data2 = level->parent_elt; return TRUE; } return FALSE; } static void gtk_tree_model_sort_ref_node (GtkTreeModel *tree_model, GtkTreeIter *iter) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) tree_model; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; GtkTreeIter child_iter; SortLevel *level; SortElt *elt; g_return_if_fail (priv->child_model != NULL); g_return_if_fail (VALID_ITER (iter, tree_model_sort)); GET_CHILD_ITER (tree_model_sort, &child_iter, iter); /* Reference the node in the child model */ gtk_tree_model_ref_node (priv->child_model, &child_iter); /* Increase the reference count of this element and its level */ level = iter->user_data; elt = iter->user_data2; elt->ref_count++; level->ref_count++; if (level->ref_count == 1) { SortLevel *parent_level = level->parent_level; SortElt *parent_elt = level->parent_elt; /* We were at zero -- time to decrement the zero_ref_count val */ while (parent_level) { parent_elt->zero_ref_count--; parent_elt = parent_level->parent_elt; parent_level = parent_level->parent_level; } if (priv->root != level) priv->zero_ref_count--; } } static void gtk_tree_model_sort_real_unref_node (GtkTreeModel *tree_model, GtkTreeIter *iter, gboolean propagate_unref) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) tree_model; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; SortLevel *level; SortElt *elt; g_return_if_fail (priv->child_model != NULL); g_return_if_fail (VALID_ITER (iter, tree_model_sort)); if (propagate_unref) { GtkTreeIter child_iter; GET_CHILD_ITER (tree_model_sort, &child_iter, iter); gtk_tree_model_unref_node (priv->child_model, &child_iter); } level = iter->user_data; elt = iter->user_data2; g_return_if_fail (elt->ref_count > 0); elt->ref_count--; level->ref_count--; if (level->ref_count == 0) { SortLevel *parent_level = level->parent_level; SortElt *parent_elt = level->parent_elt; /* We are at zero -- time to increment the zero_ref_count val */ while (parent_level) { parent_elt->zero_ref_count++; parent_elt = parent_level->parent_elt; parent_level = parent_level->parent_level; } if (priv->root != level) priv->zero_ref_count++; } } static void gtk_tree_model_sort_unref_node (GtkTreeModel *tree_model, GtkTreeIter *iter) { gtk_tree_model_sort_real_unref_node (tree_model, iter, TRUE); } /* Sortable interface */ static gboolean gtk_tree_model_sort_get_sort_column_id (GtkTreeSortable *sortable, gint *sort_column_id, GtkSortType *order) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *)sortable; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; if (sort_column_id) *sort_column_id = priv->sort_column_id; if (order) *order = priv->order; if (priv->sort_column_id == GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID || priv->sort_column_id == GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID) return FALSE; return TRUE; } static void gtk_tree_model_sort_set_sort_column_id (GtkTreeSortable *sortable, gint sort_column_id, GtkSortType order) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *)sortable; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; if (sort_column_id != GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID) { if (sort_column_id != GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID) { GtkTreeDataSortHeader *header = NULL; header = _gtk_tree_data_list_get_header (priv->sort_list, sort_column_id); /* we want to make sure that we have a function */ g_return_if_fail (header != NULL); g_return_if_fail (header->func != NULL); } else g_return_if_fail (priv->default_sort_func != NULL); if (priv->sort_column_id == sort_column_id) { if (sort_column_id != GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID) { if (priv->order == order) return; } else return; } } priv->sort_column_id = sort_column_id; priv->order = order; gtk_tree_sortable_sort_column_changed (sortable); gtk_tree_model_sort_sort (tree_model_sort); } static void gtk_tree_model_sort_set_sort_func (GtkTreeSortable *sortable, gint sort_column_id, GtkTreeIterCompareFunc func, gpointer data, GDestroyNotify destroy) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *) sortable; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; priv->sort_list = _gtk_tree_data_list_set_header (priv->sort_list, sort_column_id, func, data, destroy); if (priv->sort_column_id == sort_column_id) gtk_tree_model_sort_sort (tree_model_sort); } static void gtk_tree_model_sort_set_default_sort_func (GtkTreeSortable *sortable, GtkTreeIterCompareFunc func, gpointer data, GDestroyNotify destroy) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *)sortable; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; if (priv->default_sort_destroy) { GDestroyNotify d = priv->default_sort_destroy; priv->default_sort_destroy = NULL; d (priv->default_sort_data); } priv->default_sort_func = func; priv->default_sort_data = data; priv->default_sort_destroy = destroy; if (priv->sort_column_id == GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID) gtk_tree_model_sort_sort (tree_model_sort); } static gboolean gtk_tree_model_sort_has_default_sort_func (GtkTreeSortable *sortable) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *)sortable; return (tree_model_sort->priv->default_sort_func != NULL); } /* DragSource interface */ static gboolean gtk_tree_model_sort_row_draggable (GtkTreeDragSource *drag_source, GtkTreePath *path) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *)drag_source; GtkTreePath *child_path; gboolean draggable; child_path = gtk_tree_model_sort_convert_path_to_child_path (tree_model_sort, path); draggable = gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (tree_model_sort->priv->child_model), child_path); gtk_tree_path_free (child_path); return draggable; } static gboolean gtk_tree_model_sort_drag_data_get (GtkTreeDragSource *drag_source, GtkTreePath *path, GtkSelectionData *selection_data) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *)drag_source; GtkTreePath *child_path; gboolean gotten; child_path = gtk_tree_model_sort_convert_path_to_child_path (tree_model_sort, path); gotten = gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (tree_model_sort->priv->child_model), child_path, selection_data); gtk_tree_path_free (child_path); return gotten; } static gboolean gtk_tree_model_sort_drag_data_delete (GtkTreeDragSource *drag_source, GtkTreePath *path) { GtkTreeModelSort *tree_model_sort = (GtkTreeModelSort *)drag_source; GtkTreePath *child_path; gboolean deleted; child_path = gtk_tree_model_sort_convert_path_to_child_path (tree_model_sort, path); deleted = gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (tree_model_sort->priv->child_model), child_path); gtk_tree_path_free (child_path); return deleted; } /* sorting code - private */ static gint gtk_tree_model_sort_compare_func (gconstpointer a, gconstpointer b, gpointer user_data) { SortData *data = (SortData *)user_data; GtkTreeModelSort *tree_model_sort = data->tree_model_sort; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; const SortElt *sa = a; const SortElt *sb = b; GtkTreeIter iter_a, iter_b; gint retval; if (GTK_TREE_MODEL_SORT_CACHE_CHILD_ITERS (tree_model_sort)) { iter_a = sa->iter; iter_b = sb->iter; } else { data->parent_path_indices [data->parent_path_depth-1] = sa->offset; gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->child_model), &iter_a, data->parent_path); data->parent_path_indices [data->parent_path_depth-1] = sb->offset; gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->child_model), &iter_b, data->parent_path); } retval = (* data->sort_func) (GTK_TREE_MODEL (priv->child_model), &iter_a, &iter_b, data->sort_data); if (priv->order == GTK_SORT_DESCENDING) { if (retval > 0) retval = -1; else if (retval < 0) retval = 1; } return retval; } static gint gtk_tree_model_sort_offset_compare_func (gconstpointer a, gconstpointer b, gpointer user_data) { gint retval; const SortElt *sa = (SortElt *)a; const SortElt *sb = (SortElt *)b; SortData *data = (SortData *)user_data; if (sa->offset < sb->offset) retval = -1; else if (sa->offset > sb->offset) retval = 1; else retval = 0; if (data->tree_model_sort->priv->order == GTK_SORT_DESCENDING) { if (retval > 0) retval = -1; else if (retval < 0) retval = 1; } return retval; } static void gtk_tree_model_sort_sort_level (GtkTreeModelSort *tree_model_sort, SortLevel *level, gboolean recurse, gboolean emit_reordered) { GtkTreeModelSortPrivate *priv = tree_model_sort->priv; gint i; GSequenceIter *begin_siter, *end_siter, *siter; SortElt *begin_elt; gint *new_order; GtkTreeIter iter; GtkTreePath *path; SortData data; g_return_if_fail (level != NULL); begin_siter = g_sequence_get_begin_iter (level->seq); begin_elt = g_sequence_get (begin_siter); if (g_sequence_get_length (level->seq) < 1 && !begin_elt->children) return; iter.stamp = priv->stamp; iter.user_data = level; iter.user_data2 = begin_elt; gtk_tree_model_sort_ref_node (GTK_TREE_MODEL (tree_model_sort), &iter); i = 0; end_siter = g_sequence_get_end_iter (level->seq); for (siter = g_sequence_get_begin_iter (level->seq); siter != end_siter; siter = g_sequence_iter_next (siter)) { SortElt *elt = g_sequence_get (siter); elt->old_index = i; i++; } fill_sort_data (&data, tree_model_sort, level); if (data.sort_func == NO_SORT_FUNC) g_sequence_sort (level->seq, gtk_tree_model_sort_offset_compare_func, &data); else g_sequence_sort (level->seq, gtk_tree_model_sort_compare_func, &data); free_sort_data (&data); new_order = g_new (gint, g_sequence_get_length (level->seq)); i = 0; end_siter = g_sequence_get_end_iter (level->seq); for (siter = g_sequence_get_begin_iter (level->seq); siter != end_siter; siter = g_sequence_iter_next (siter)) { SortElt *elt = g_sequence_get (siter); new_order[i++] = elt->old_index; } if (emit_reordered) { gtk_tree_model_sort_increment_stamp (tree_model_sort); if (level->parent_elt) { iter.stamp = priv->stamp; iter.user_data = level->parent_level; iter.user_data2 = level->parent_elt; path = gtk_tree_model_get_path (GTK_TREE_MODEL (tree_model_sort), &iter); gtk_tree_model_rows_reordered (GTK_TREE_MODEL (tree_model_sort), path, &iter, new_order); } else { /* toplevel list */ path = gtk_tree_path_new (); gtk_tree_model_rows_reordered (GTK_TREE_MODEL (tree_model_sort), path, NULL, new_order); } gtk_tree_path_free (path); } /* recurse, if possible */ if (recurse) { end_siter = g_sequence_get_end_iter (level->seq); for (siter = g_sequence_get_begin_iter (level->seq); siter != end_siter; siter = g_sequence_iter_next (siter)) { SortElt *elt = g_sequence_get (siter); if (elt->children) gtk_tree_model_sort_sort_level (tree_model_sort, elt->children, TRUE, emit_reordered); } } g_free (new_order); /* get the iter we referenced at the beginning of this function and * unref it again */ iter.stamp = priv->stamp; iter.user_data = level; iter.user_data2 = begin_elt; gtk_tree_model_sort_unref_node (GTK_TREE_MODEL (tree_model_sort), &iter); } static void gtk_tree_model_sort_sort (GtkTreeModelSort *tree_model_sort) { GtkTreeModelSortPrivate *priv = tree_model_sort->priv; if (priv->sort_column_id == GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID) return; if (!priv->root) return; if (priv->sort_column_id != GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID) { GtkTreeDataSortHeader *header = NULL; header = _gtk_tree_data_list_get_header (priv->sort_list, priv->sort_column_id); /* we want to make sure that we have a function */ g_return_if_fail (header != NULL); g_return_if_fail (header->func != NULL); } else g_return_if_fail (priv->default_sort_func != NULL); gtk_tree_model_sort_sort_level (tree_model_sort, priv->root, TRUE, TRUE); } /* signal helpers */ static gboolean gtk_tree_model_sort_insert_value (GtkTreeModelSort *tree_model_sort, SortLevel *level, GtkTreePath *s_path, GtkTreeIter *s_iter) { GtkTreeModelSortPrivate *priv = tree_model_sort->priv; SortElt *elt; SortData data; gint offset; elt = sort_elt_new (); offset = gtk_tree_path_get_indices (s_path)[gtk_tree_path_get_depth (s_path) - 1]; if (GTK_TREE_MODEL_SORT_CACHE_CHILD_ITERS (tree_model_sort)) elt->iter = *s_iter; elt->offset = offset; elt->zero_ref_count = 0; elt->ref_count = 0; elt->children = NULL; /* update all larger offsets */ g_sequence_foreach (level->seq, increase_offset_iter, GINT_TO_POINTER (offset)); fill_sort_data (&data, tree_model_sort, level); if (priv->sort_column_id == GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID && priv->default_sort_func == NO_SORT_FUNC) { elt->siter = g_sequence_insert_sorted (level->seq, elt, gtk_tree_model_sort_offset_compare_func, &data); } else { elt->siter = g_sequence_insert_sorted (level->seq, elt, gtk_tree_model_sort_compare_func, &data); } free_sort_data (&data); return TRUE; } /* sort elt stuff */ static GtkTreePath * gtk_tree_model_sort_elt_get_path (SortLevel *level, SortElt *elt) { SortLevel *walker = level; SortElt *walker2 = elt; GtkTreePath *path; g_return_val_if_fail (level != NULL, NULL); g_return_val_if_fail (elt != NULL, NULL); path = gtk_tree_path_new (); while (walker) { gtk_tree_path_prepend_index (path, walker2->offset); if (!walker->parent_level) break; walker2 = walker->parent_elt; walker = walker->parent_level; } return path; } /** * gtk_tree_model_sort_set_model: * @tree_model_sort: The #GtkTreeModelSort. * @child_model: (allow-none): A #GtkTreeModel, or %NULL. * * Sets the model of @tree_model_sort to be @model. If @model is %NULL, * then the old model is unset. The sort function is unset as a result * of this call. The model will be in an unsorted state until a sort * function is set. **/ static void gtk_tree_model_sort_set_model (GtkTreeModelSort *tree_model_sort, GtkTreeModel *child_model) { GtkTreeModelSortPrivate *priv = tree_model_sort->priv; if (child_model) g_object_ref (child_model); if (priv->child_model) { g_signal_handler_disconnect (priv->child_model, priv->changed_id); g_signal_handler_disconnect (priv->child_model, priv->inserted_id); g_signal_handler_disconnect (priv->child_model, priv->has_child_toggled_id); g_signal_handler_disconnect (priv->child_model, priv->deleted_id); g_signal_handler_disconnect (priv->child_model, priv->reordered_id); /* reset our state */ if (priv->root) gtk_tree_model_sort_free_level (tree_model_sort, priv->root, TRUE); priv->root = NULL; _gtk_tree_data_list_header_free (priv->sort_list); priv->sort_list = NULL; g_object_unref (priv->child_model); } priv->child_model = child_model; if (child_model) { GType *types; gint i, n_columns; priv->changed_id = g_signal_connect (child_model, "row-changed", G_CALLBACK (gtk_tree_model_sort_row_changed), tree_model_sort); priv->inserted_id = g_signal_connect (child_model, "row-inserted", G_CALLBACK (gtk_tree_model_sort_row_inserted), tree_model_sort); priv->has_child_toggled_id = g_signal_connect (child_model, "row-has-child-toggled", G_CALLBACK (gtk_tree_model_sort_row_has_child_toggled), tree_model_sort); priv->deleted_id = g_signal_connect (child_model, "row-deleted", G_CALLBACK (gtk_tree_model_sort_row_deleted), tree_model_sort); priv->reordered_id = g_signal_connect (child_model, "rows-reordered", G_CALLBACK (gtk_tree_model_sort_rows_reordered), tree_model_sort); priv->child_flags = gtk_tree_model_get_flags (child_model); n_columns = gtk_tree_model_get_n_columns (child_model); types = g_new (GType, n_columns); for (i = 0; i < n_columns; i++) types[i] = gtk_tree_model_get_column_type (child_model, i); priv->sort_list = _gtk_tree_data_list_header_new (n_columns, types); g_free (types); priv->default_sort_func = NO_SORT_FUNC; priv->stamp = g_random_int (); } } /** * gtk_tree_model_sort_get_model: * @tree_model: a #GtkTreeModelSort * * Returns the model the #GtkTreeModelSort is sorting. * * Return value: (transfer none): the "child model" being sorted **/ GtkTreeModel * gtk_tree_model_sort_get_model (GtkTreeModelSort *tree_model) { g_return_val_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model), NULL); return tree_model->priv->child_model; } static GtkTreePath * gtk_real_tree_model_sort_convert_child_path_to_path (GtkTreeModelSort *tree_model_sort, GtkTreePath *child_path, gboolean build_levels) { GtkTreeModelSortPrivate *priv = tree_model_sort->priv; gint *child_indices; GtkTreePath *retval; SortLevel *level; gint i; g_return_val_if_fail (priv->child_model != NULL, NULL); g_return_val_if_fail (child_path != NULL, NULL); retval = gtk_tree_path_new (); child_indices = gtk_tree_path_get_indices (child_path); if (priv->root == NULL && build_levels) gtk_tree_model_sort_build_level (tree_model_sort, NULL, NULL); level = SORT_LEVEL (priv->root); for (i = 0; i < gtk_tree_path_get_depth (child_path); i++) { SortElt *tmp; GSequenceIter *siter; gboolean found_child = FALSE; if (!level) { gtk_tree_path_free (retval); return NULL; } if (child_indices[i] >= g_sequence_get_length (level->seq)) { gtk_tree_path_free (retval); return NULL; } tmp = lookup_elt_with_offset (tree_model_sort, level, child_indices[i], &siter); if (tmp) { gtk_tree_path_append_index (retval, g_sequence_iter_get_position (siter)); if (tmp->children == NULL && build_levels) gtk_tree_model_sort_build_level (tree_model_sort, level, tmp); level = tmp->children; found_child = TRUE; } if (! found_child) { gtk_tree_path_free (retval); return NULL; } } return retval; } /** * gtk_tree_model_sort_convert_child_path_to_path: * @tree_model_sort: A #GtkTreeModelSort * @child_path: A #GtkTreePath to convert * * Converts @child_path to a path relative to @tree_model_sort. That is, * @child_path points to a path in the child model. The returned path will * point to the same row in the sorted model. If @child_path isn't a valid * path on the child model, then %NULL is returned. * * Return value: A newly allocated #GtkTreePath, or %NULL **/ GtkTreePath * gtk_tree_model_sort_convert_child_path_to_path (GtkTreeModelSort *tree_model_sort, GtkTreePath *child_path) { g_return_val_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model_sort), NULL); g_return_val_if_fail (tree_model_sort->priv->child_model != NULL, NULL); g_return_val_if_fail (child_path != NULL, NULL); return gtk_real_tree_model_sort_convert_child_path_to_path (tree_model_sort, child_path, TRUE); } /** * gtk_tree_model_sort_convert_child_iter_to_iter: * @tree_model_sort: A #GtkTreeModelSort * @sort_iter: (out): An uninitialized #GtkTreeIter. * @child_iter: A valid #GtkTreeIter pointing to a row on the child model * * Sets @sort_iter to point to the row in @tree_model_sort that corresponds to * the row pointed at by @child_iter. If @sort_iter was not set, %FALSE * is returned. Note: a boolean is only returned since 2.14. * * Return value: %TRUE, if @sort_iter was set, i.e. if @sort_iter is a * valid iterator pointer to a visible row in the child model. **/ gboolean gtk_tree_model_sort_convert_child_iter_to_iter (GtkTreeModelSort *tree_model_sort, GtkTreeIter *sort_iter, GtkTreeIter *child_iter) { gboolean ret; GtkTreePath *child_path, *path; GtkTreeModelSortPrivate *priv = tree_model_sort->priv; g_return_val_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model_sort), FALSE); g_return_val_if_fail (priv->child_model != NULL, FALSE); g_return_val_if_fail (sort_iter != NULL, FALSE); g_return_val_if_fail (child_iter != NULL, FALSE); g_return_val_if_fail (sort_iter != child_iter, FALSE); sort_iter->stamp = 0; child_path = gtk_tree_model_get_path (priv->child_model, child_iter); g_return_val_if_fail (child_path != NULL, FALSE); path = gtk_tree_model_sort_convert_child_path_to_path (tree_model_sort, child_path); gtk_tree_path_free (child_path); if (!path) { g_warning ("%s: The conversion of the child path to a GtkTreeModel sort path failed", G_STRLOC); return FALSE; } ret = gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_model_sort), sort_iter, path); gtk_tree_path_free (path); return ret; } /** * gtk_tree_model_sort_convert_path_to_child_path: * @tree_model_sort: A #GtkTreeModelSort * @sorted_path: A #GtkTreePath to convert * * Converts @sorted_path to a path on the child model of @tree_model_sort. * That is, @sorted_path points to a location in @tree_model_sort. The * returned path will point to the same location in the model not being * sorted. If @sorted_path does not point to a location in the child model, * %NULL is returned. * * Return value: A newly allocated #GtkTreePath, or %NULL **/ GtkTreePath * gtk_tree_model_sort_convert_path_to_child_path (GtkTreeModelSort *tree_model_sort, GtkTreePath *sorted_path) { GtkTreeModelSortPrivate *priv = tree_model_sort->priv; gint *sorted_indices; GtkTreePath *retval; SortLevel *level; gint i; g_return_val_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model_sort), NULL); g_return_val_if_fail (priv->child_model != NULL, NULL); g_return_val_if_fail (sorted_path != NULL, NULL); retval = gtk_tree_path_new (); sorted_indices = gtk_tree_path_get_indices (sorted_path); if (priv->root == NULL) gtk_tree_model_sort_build_level (tree_model_sort, NULL, NULL); level = SORT_LEVEL (priv->root); for (i = 0; i < gtk_tree_path_get_depth (sorted_path); i++) { SortElt *elt = NULL; GSequenceIter *siter; if ((level == NULL) || (g_sequence_get_length (level->seq) <= sorted_indices[i])) { gtk_tree_path_free (retval); return NULL; } siter = g_sequence_get_iter_at_pos (level->seq, sorted_indices[i]); if (g_sequence_iter_is_end (siter)) { gtk_tree_path_free (retval); return NULL; } elt = GET_ELT (siter); if (elt->children == NULL) gtk_tree_model_sort_build_level (tree_model_sort, level, elt); if (level == NULL) { gtk_tree_path_free (retval); break; } gtk_tree_path_append_index (retval, elt->offset); level = elt->children; } return retval; } /** * gtk_tree_model_sort_convert_iter_to_child_iter: * @tree_model_sort: A #GtkTreeModelSort * @child_iter: (out): An uninitialized #GtkTreeIter * @sorted_iter: A valid #GtkTreeIter pointing to a row on @tree_model_sort. * * Sets @child_iter to point to the row pointed to by @sorted_iter. **/ void gtk_tree_model_sort_convert_iter_to_child_iter (GtkTreeModelSort *tree_model_sort, GtkTreeIter *child_iter, GtkTreeIter *sorted_iter) { GtkTreeModelSortPrivate *priv = tree_model_sort->priv; g_return_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model_sort)); g_return_if_fail (priv->child_model != NULL); g_return_if_fail (child_iter != NULL); g_return_if_fail (VALID_ITER (sorted_iter, tree_model_sort)); g_return_if_fail (sorted_iter != child_iter); if (GTK_TREE_MODEL_SORT_CACHE_CHILD_ITERS (tree_model_sort)) { *child_iter = SORT_ELT (sorted_iter->user_data2)->iter; } else { GtkTreePath *path; gboolean valid = FALSE; path = gtk_tree_model_sort_elt_get_path (sorted_iter->user_data, sorted_iter->user_data2); valid = gtk_tree_model_get_iter (priv->child_model, child_iter, path); gtk_tree_path_free (path); g_return_if_fail (valid == TRUE); } } static void gtk_tree_model_sort_build_level (GtkTreeModelSort *tree_model_sort, SortLevel *parent_level, SortElt *parent_elt) { GtkTreeModelSortPrivate *priv = tree_model_sort->priv; GtkTreeIter iter; SortLevel *new_level; gint length = 0; gint i; g_assert (priv->child_model != NULL); if (parent_level == NULL) { if (gtk_tree_model_get_iter_first (priv->child_model, &iter) == FALSE) return; length = gtk_tree_model_iter_n_children (priv->child_model, NULL); } else { GtkTreeIter parent_iter; GtkTreeIter child_parent_iter; parent_iter.stamp = priv->stamp; parent_iter.user_data = parent_level; parent_iter.user_data2 = parent_elt; gtk_tree_model_sort_convert_iter_to_child_iter (tree_model_sort, &child_parent_iter, &parent_iter); if (gtk_tree_model_iter_children (priv->child_model, &iter, &child_parent_iter) == FALSE) return; /* stamp may have changed */ gtk_tree_model_sort_convert_iter_to_child_iter (tree_model_sort, &child_parent_iter, &parent_iter); length = gtk_tree_model_iter_n_children (priv->child_model, &child_parent_iter); gtk_tree_model_sort_ref_node (GTK_TREE_MODEL (tree_model_sort), &parent_iter); } g_return_if_fail (length > 0); new_level = g_new (SortLevel, 1); new_level->seq = g_sequence_new (sort_elt_free); new_level->ref_count = 0; new_level->parent_level = parent_level; new_level->parent_elt = parent_elt; if (parent_elt) parent_elt->children = new_level; else priv->root = new_level; /* increase the count of zero ref_counts.*/ while (parent_level) { parent_elt->zero_ref_count++; parent_elt = parent_level->parent_elt; parent_level = parent_level->parent_level; } if (new_level != priv->root) priv->zero_ref_count++; for (i = 0; i < length; i++) { SortElt *sort_elt; sort_elt = sort_elt_new (); sort_elt->offset = i; sort_elt->zero_ref_count = 0; sort_elt->ref_count = 0; sort_elt->children = NULL; if (GTK_TREE_MODEL_SORT_CACHE_CHILD_ITERS (tree_model_sort)) { sort_elt->iter = iter; if (gtk_tree_model_iter_next (priv->child_model, &iter) == FALSE && i < length - 1) { if (parent_level) { GtkTreePath *level; gchar *str; level = gtk_tree_model_sort_elt_get_path (parent_level, parent_elt); str = gtk_tree_path_to_string (level); gtk_tree_path_free (level); g_warning ("%s: There is a discrepancy between the sort model " "and the child model. The child model is " "advertising a wrong length for level %s:.", G_STRLOC, str); g_free (str); } else { g_warning ("%s: There is a discrepancy between the sort model " "and the child model. The child model is " "advertising a wrong length for the root level.", G_STRLOC); } return; } } sort_elt->siter = g_sequence_append (new_level->seq, sort_elt); } /* sort level */ gtk_tree_model_sort_sort_level (tree_model_sort, new_level, FALSE, FALSE); } static void gtk_tree_model_sort_free_level (GtkTreeModelSort *tree_model_sort, SortLevel *sort_level, gboolean unref) { GtkTreeModelSortPrivate *priv = tree_model_sort->priv; GSequenceIter *siter; GSequenceIter *end_siter; g_assert (sort_level); end_siter = g_sequence_get_end_iter (sort_level->seq); for (siter = g_sequence_get_begin_iter (sort_level->seq); siter != end_siter; siter = g_sequence_iter_next (siter)) { SortElt *elt = g_sequence_get (siter); if (elt->children) gtk_tree_model_sort_free_level (tree_model_sort, elt->children, unref); } if (sort_level->ref_count == 0) { SortLevel *parent_level = sort_level->parent_level; SortElt *parent_elt = sort_level->parent_elt; while (parent_level) { parent_elt->zero_ref_count--; parent_elt = parent_level->parent_elt; parent_level = parent_level->parent_level; } if (sort_level != priv->root) priv->zero_ref_count--; } if (sort_level->parent_elt) { if (unref) { GtkTreeIter parent_iter; parent_iter.stamp = tree_model_sort->priv->stamp; parent_iter.user_data = sort_level->parent_level; parent_iter.user_data2 = sort_level->parent_elt; gtk_tree_model_sort_unref_node (GTK_TREE_MODEL (tree_model_sort), &parent_iter); } sort_level->parent_elt->children = NULL; } else priv->root = NULL; g_sequence_free (sort_level->seq); sort_level->seq = NULL; g_free (sort_level); sort_level = NULL; } static void gtk_tree_model_sort_increment_stamp (GtkTreeModelSort *tree_model_sort) { GtkTreeModelSortPrivate *priv = tree_model_sort->priv; do { priv->stamp++; } while (priv->stamp == 0); gtk_tree_model_sort_clear_cache (tree_model_sort); } static void gtk_tree_model_sort_clear_cache_helper_iter (gpointer data, gpointer user_data) { GtkTreeModelSort *tree_model_sort = user_data; SortElt *elt = data; if (elt->zero_ref_count > 0) gtk_tree_model_sort_clear_cache_helper (tree_model_sort, elt->children); } static void gtk_tree_model_sort_clear_cache_helper (GtkTreeModelSort *tree_model_sort, SortLevel *level) { g_assert (level != NULL); g_sequence_foreach (level->seq, gtk_tree_model_sort_clear_cache_helper_iter, tree_model_sort); if (level->ref_count == 0 && level != tree_model_sort->priv->root) gtk_tree_model_sort_free_level (tree_model_sort, level, TRUE); } /** * gtk_tree_model_sort_reset_default_sort_func: * @tree_model_sort: A #GtkTreeModelSort * * This resets the default sort function to be in the 'unsorted' state. That * is, it is in the same order as the child model. It will re-sort the model * to be in the same order as the child model only if the #GtkTreeModelSort * is in 'unsorted' state. **/ void gtk_tree_model_sort_reset_default_sort_func (GtkTreeModelSort *tree_model_sort) { GtkTreeModelSortPrivate *priv = tree_model_sort->priv; g_return_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model_sort)); if (priv->default_sort_destroy) { GDestroyNotify d = priv->default_sort_destroy; priv->default_sort_destroy = NULL; d (priv->default_sort_data); } priv->default_sort_func = NO_SORT_FUNC; priv->default_sort_data = NULL; priv->default_sort_destroy = NULL; if (priv->sort_column_id == GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID) gtk_tree_model_sort_sort (tree_model_sort); priv->sort_column_id = GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID; } /** * gtk_tree_model_sort_clear_cache: * @tree_model_sort: A #GtkTreeModelSort * * This function should almost never be called. It clears the @tree_model_sort * of any cached iterators that haven't been reffed with * gtk_tree_model_ref_node(). This might be useful if the child model being * sorted is static (and doesn't change often) and there has been a lot of * unreffed access to nodes. As a side effect of this function, all unreffed * iters will be invalid. **/ void gtk_tree_model_sort_clear_cache (GtkTreeModelSort *tree_model_sort) { g_return_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model_sort)); if (tree_model_sort->priv->zero_ref_count > 0) gtk_tree_model_sort_clear_cache_helper (tree_model_sort, (SortLevel *)tree_model_sort->priv->root); } static gboolean gtk_tree_model_sort_iter_is_valid_helper (GtkTreeIter *iter, SortLevel *level) { GSequenceIter *siter; GSequenceIter *end_siter; end_siter = g_sequence_get_end_iter (level->seq); for (siter = g_sequence_get_begin_iter (level->seq); siter != end_siter; siter = g_sequence_iter_next (siter)) { SortElt *elt = g_sequence_get (siter); if (iter->user_data == level && iter->user_data2 == elt) return TRUE; if (elt->children) if (gtk_tree_model_sort_iter_is_valid_helper (iter, elt->children)) return TRUE; } return FALSE; } /** * gtk_tree_model_sort_iter_is_valid: * @tree_model_sort: A #GtkTreeModelSort. * @iter: A #GtkTreeIter. * * * This function is slow. Only use it for debugging and/or testing purposes. * * * Checks if the given iter is a valid iter for this #GtkTreeModelSort. * * Return value: %TRUE if the iter is valid, %FALSE if the iter is invalid. * * Since: 2.2 **/ gboolean gtk_tree_model_sort_iter_is_valid (GtkTreeModelSort *tree_model_sort, GtkTreeIter *iter) { g_return_val_if_fail (GTK_IS_TREE_MODEL_SORT (tree_model_sort), FALSE); g_return_val_if_fail (iter != NULL, FALSE); if (!VALID_ITER (iter, tree_model_sort)) return FALSE; return gtk_tree_model_sort_iter_is_valid_helper (iter, tree_model_sort->priv->root); }