[gtk] gtk: Add GtkFilterListModel
- From: Benjamin Otte <otte src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk] gtk: Add GtkFilterListModel
- Date: Sun, 16 Sep 2018 16:53:19 +0000 (UTC)
commit 4f70f7234997bcb6ae91bbaaa277c573fc17b414
Author: Benjamin Otte <otte redhat com>
Date: Fri Aug 31 05:34:18 2018 +0200
gtk: Add GtkFilterListModel
This is a GListModel implementation that filters the given source model.
docs/reference/gtk/gtk4-docs.xml | 1 +
docs/reference/gtk/gtk4-sections.txt | 20 +
gtk/gtk.h | 1 +
gtk/gtkfilterlistmodel.c | 711 +++++++++++++++++++++++++++++++++++
gtk/gtkfilterlistmodel.h | 67 ++++
gtk/meson.build | 2 +
testsuite/gtk/defaultvalue.c | 12 +
testsuite/gtk/filterlistmodel.c | 324 ++++++++++++++++
testsuite/gtk/meson.build | 1 +
testsuite/gtk/notify.c | 8 +
testsuite/gtk/objects-finalize.c | 8 +
11 files changed, 1155 insertions(+)
---
diff --git a/docs/reference/gtk/gtk4-docs.xml b/docs/reference/gtk/gtk4-docs.xml
index 2104d147ea..edb2529c6a 100644
--- a/docs/reference/gtk/gtk4-docs.xml
+++ b/docs/reference/gtk/gtk4-docs.xml
@@ -43,6 +43,7 @@
<chapter id="Lists">
<title>GListModel support</title>
+ <xi:include href="xml/gtkfilterlistmodel.xml" />
<xi:include href="xml/gtktreelistmodel.xml" />
</chapter>
diff --git a/docs/reference/gtk/gtk4-sections.txt b/docs/reference/gtk/gtk4-sections.txt
index 382305663c..81f3600f94 100644
--- a/docs/reference/gtk/gtk4-sections.txt
+++ b/docs/reference/gtk/gtk4-sections.txt
@@ -1239,6 +1239,26 @@ GTK_TYPE_FILE_FILTER
gtk_file_filter_get_type
</SECTION>
+<SECTION>
+<FILE>gtkfilterlistmodel</FILE>
+<TITLE>GtkFilterListModel</TITLE>
+GtkFilterListModel
+gtk_filter_list_model_new
+gtk_filter_list_model_get_model
+gtk_filter_list_model_set_filter_func
+gtk_filter_list_model_has_filter
+gtk_filter_list_model_refilter
+<SUBSECTION Standard>
+GTK_FILTER_LIST_MODEL
+GTK_IS_FILTER_LIST_MODEL
+GTK_TYPE_FILTER_LIST_MODEL
+GTK_FILTER_LIST_MODEL_CLASS
+GTK_IS_FILTER_LIST_MODEL_CLASS
+GTK_FILTER_LIST_MODEL_GET_CLASS
+<SUBSECTION Private>
+gtk_filter_list_model_get_type
+</SECTION>
+
<SECTION>
<FILE>gtkfixed</FILE>
<TITLE>GtkFixed</TITLE>
diff --git a/gtk/gtk.h b/gtk/gtk.h
index 6363fe8210..704f14238a 100644
--- a/gtk/gtk.h
+++ b/gtk/gtk.h
@@ -104,6 +104,7 @@
#include <gtk/gtkfilechoosernative.h>
#include <gtk/gtkfilechooserwidget.h>
#include <gtk/gtkfilefilter.h>
+#include <gtk/gtkfilterlistmodel.h>
#include <gtk/gtkflowbox.h>
#include <gtk/gtkfontbutton.h>
#include <gtk/gtkfontchooser.h>
diff --git a/gtk/gtkfilterlistmodel.c b/gtk/gtkfilterlistmodel.c
new file mode 100644
index 0000000000..4703d66816
--- /dev/null
+++ b/gtk/gtkfilterlistmodel.c
@@ -0,0 +1,711 @@
+/*
+ * Copyright © 2018 Benjamin Otte
+ *
+ * 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 2.1 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, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte gnome org>
+ */
+
+#include "config.h"
+
+#include "gtkfilterlistmodel.h"
+
+#include "gtkcssrbtreeprivate.h"
+#include "gtkintl.h"
+#include "gtkprivate.h"
+
+/**
+ * SECTION:gtkfilterlistmodel
+ * @title: GtkFilterListModel
+ * @short_description: a #GListModel that filters its items
+ * @see_also: #GListModel
+ *
+ * #GtkFilterListModel is a list model that filters a given other
+ * listmodel.
+ * It hides some elements from the other elements according to
+ * criteria given by a #GtkFilterListModelFilterFunc.
+ */
+
+enum {
+ PROP_0,
+ PROP_HAS_FILTER,
+ PROP_ITEM_TYPE,
+ PROP_MODEL,
+ NUM_PROPERTIES
+};
+
+typedef struct _FilterNode FilterNode;
+typedef struct _FilterAugment FilterAugment;
+
+struct _FilterNode
+{
+ guint visible : 1;
+};
+
+struct _FilterAugment
+{
+ guint n_items;
+ guint n_visible;
+};
+
+struct _GtkFilterListModel
+{
+ GObject parent_instance;
+
+ GType item_type;
+ GListModel *model;
+ GtkFilterListModelFilterFunc filter_func;
+ gpointer user_data;
+ GDestroyNotify user_destroy;
+
+ GtkCssRbTree *items; /* NULL if filter_func == NULL */
+};
+
+struct _GtkFilterListModelClass
+{
+ GObjectClass parent_class;
+};
+
+static GParamSpec *properties[NUM_PROPERTIES] = { NULL, };
+
+static FilterNode *
+gtk_filter_list_model_get_nth_filtered (GtkCssRbTree *tree,
+ guint position,
+ guint *out_unfiltered)
+{
+ FilterNode *node, *tmp;
+ guint unfiltered;
+
+ node = gtk_css_rb_tree_get_root (tree);
+ unfiltered = 0;
+
+ while (node)
+ {
+ tmp = gtk_css_rb_tree_get_left (tree, node);
+ if (tmp)
+ {
+ FilterAugment *aug = gtk_css_rb_tree_get_augment (tree, tmp);
+ if (position < aug->n_visible)
+ {
+ node = tmp;
+ continue;
+ }
+ position -= aug->n_visible;
+ unfiltered += aug->n_items;
+ }
+
+ if (node->visible)
+ {
+ if (position == 0)
+ break;
+ position--;
+ }
+
+ unfiltered++;
+
+ node = gtk_css_rb_tree_get_right (tree, node);
+ }
+
+ if (out_unfiltered)
+ *out_unfiltered = unfiltered;
+
+ return node;
+}
+
+static FilterNode *
+gtk_filter_list_model_get_nth (GtkCssRbTree *tree,
+ guint position,
+ guint *out_filtered)
+{
+ FilterNode *node, *tmp;
+ guint filtered;
+
+ node = gtk_css_rb_tree_get_root (tree);
+ filtered = 0;
+
+ while (node)
+ {
+ tmp = gtk_css_rb_tree_get_left (tree, node);
+ if (tmp)
+ {
+ FilterAugment *aug = gtk_css_rb_tree_get_augment (tree, tmp);
+ if (position < aug->n_items)
+ {
+ node = tmp;
+ continue;
+ }
+ position -= aug->n_items;
+ filtered += aug->n_visible;
+ }
+
+ if (position == 0)
+ break;
+
+ position--;
+ if (node->visible)
+ filtered++;
+
+ node = gtk_css_rb_tree_get_right (tree, node);
+ }
+
+ if (out_filtered)
+ *out_filtered = filtered;
+
+ return node;
+}
+
+static GType
+gtk_filter_list_model_get_item_type (GListModel *list)
+{
+ GtkFilterListModel *self = GTK_FILTER_LIST_MODEL (list);
+
+ return self->item_type;
+}
+
+static guint
+gtk_filter_list_model_get_n_items (GListModel *list)
+{
+ GtkFilterListModel *self = GTK_FILTER_LIST_MODEL (list);
+ FilterAugment *aug;
+ FilterNode *node;
+
+ if (self->model == NULL)
+ return 0;
+
+ if (!self->items)
+ return g_list_model_get_n_items (self->model);
+
+ node = gtk_css_rb_tree_get_root (self->items);
+ if (node == NULL)
+ return 0;
+
+ aug = gtk_css_rb_tree_get_augment (self->items, node);
+ return aug->n_visible;
+}
+
+static gpointer
+gtk_filter_list_model_get_item (GListModel *list,
+ guint position)
+{
+ GtkFilterListModel *self = GTK_FILTER_LIST_MODEL (list);
+ guint unfiltered;
+
+ if (self->model == NULL)
+ return NULL;
+
+ if (self->items)
+ gtk_filter_list_model_get_nth_filtered (self->items, position, &unfiltered);
+ else
+ unfiltered = position;
+
+ return g_list_model_get_item (self->model, unfiltered);
+}
+
+static void
+gtk_filter_list_model_model_init (GListModelInterface *iface)
+{
+ iface->get_item_type = gtk_filter_list_model_get_item_type;
+ iface->get_n_items = gtk_filter_list_model_get_n_items;
+ iface->get_item = gtk_filter_list_model_get_item;
+}
+
+G_DEFINE_TYPE_WITH_CODE (GtkFilterListModel, gtk_filter_list_model, G_TYPE_OBJECT,
+ G_IMPLEMENT_INTERFACE (G_TYPE_LIST_MODEL, gtk_filter_list_model_model_init))
+
+static gboolean
+gtk_filter_list_model_run_filter (GtkFilterListModel *self,
+ guint position)
+{
+ gpointer item;
+ gboolean visible;
+
+ item = g_list_model_get_item (self->model, position);
+ visible = self->filter_func (item, self->user_data);
+ g_object_unref (item);
+
+ return visible;
+}
+
+static guint
+gtk_filter_list_model_add_items (GtkFilterListModel *self,
+ FilterNode *after,
+ guint position,
+ guint n_items)
+{
+ FilterNode *node;
+ guint i, n_visible;
+
+ n_visible = 0;
+
+ for (i = 0; i < n_items; i++)
+ {
+ node = gtk_css_rb_tree_insert_before (self->items, after);
+ node->visible = gtk_filter_list_model_run_filter (self, position + i);
+ if (node->visible)
+ n_visible++;
+ }
+
+ return n_visible;
+}
+
+static void
+gtk_filter_list_model_items_changed_cb (GListModel *model,
+ guint position,
+ guint removed,
+ guint added,
+ GtkFilterListModel *self)
+{
+ FilterNode *node;
+ guint i, filter_position, filter_removed, filter_added;
+
+ if (self->items == NULL)
+ {
+ g_list_model_items_changed (G_LIST_MODEL (self), position, removed, added);
+ return;
+ }
+
+ node = gtk_filter_list_model_get_nth (self->items, position, &filter_position);
+
+ filter_removed = 0;
+ for (i = 0; i < removed; i++)
+ {
+ FilterNode *next = gtk_css_rb_tree_get_next (self->items, node);
+ if (node->visible)
+ filter_removed++;
+ gtk_css_rb_tree_remove (self->items, node);
+ node = next;
+ }
+
+ filter_added = gtk_filter_list_model_add_items (self, node, position, added);
+
+ if (filter_removed > 0 || filter_added > 0)
+ g_list_model_items_changed (G_LIST_MODEL (self), filter_position, filter_removed, filter_added);
+}
+
+static void
+gtk_filter_list_model_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GtkFilterListModel *self = GTK_FILTER_LIST_MODEL (object);
+
+ switch (prop_id)
+ {
+ case PROP_ITEM_TYPE:
+ self->item_type = g_value_get_gtype (value);
+ break;
+
+ case PROP_MODEL:
+ gtk_filter_list_model_set_model (self, g_value_get_object (value));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gtk_filter_list_model_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GtkFilterListModel *self = GTK_FILTER_LIST_MODEL (object);
+
+ switch (prop_id)
+ {
+ case PROP_HAS_FILTER:
+ g_value_set_boolean (value, self->items != NULL);
+ break;
+
+ case PROP_ITEM_TYPE:
+ g_value_set_gtype (value, self->item_type);
+ break;
+
+ case PROP_MODEL:
+ g_value_set_object (value, self->model);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gtk_filter_list_model_clear_model (GtkFilterListModel *self)
+{
+ if (self->model == NULL)
+ return;
+
+ g_signal_handlers_disconnect_by_func (self->model, gtk_filter_list_model_items_changed_cb, self);
+ g_clear_object (&self->model);
+ if (self->items)
+ gtk_css_rb_tree_remove_all (self->items);
+}
+
+static void
+gtk_filter_list_model_dispose (GObject *object)
+{
+ GtkFilterListModel *self = GTK_FILTER_LIST_MODEL (object);
+
+ gtk_filter_list_model_clear_model (self);
+ if (self->user_destroy)
+ self->user_destroy (self->user_data);
+ self->filter_func = NULL;
+ self->user_data = NULL;
+ self->user_destroy = NULL;
+ g_clear_pointer (&self->items, gtk_css_rb_tree_unref);
+
+ G_OBJECT_CLASS (gtk_filter_list_model_parent_class)->dispose (object);
+};
+
+static void
+gtk_filter_list_model_class_init (GtkFilterListModelClass *class)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (class);
+
+ gobject_class->set_property = gtk_filter_list_model_set_property;
+ gobject_class->get_property = gtk_filter_list_model_get_property;
+ gobject_class->dispose = gtk_filter_list_model_dispose;
+
+ /**
+ * GtkFilterListModel:has-filter:
+ *
+ * If a filter is set for this model
+ */
+ properties[PROP_HAS_FILTER] =
+ g_param_spec_boolean ("has-filter",
+ P_("has filter"),
+ P_("If a filter is set for this model"),
+ FALSE,
+ GTK_PARAM_READABLE | G_PARAM_EXPLICIT_NOTIFY);
+
+ /**
+ * GtkFilterListModel:item-type:
+ *
+ * The #GType for elements of this object
+ */
+ properties[PROP_ITEM_TYPE] =
+ g_param_spec_gtype ("item-type",
+ P_("Item type"),
+ P_("The type of elements of this object"),
+ G_TYPE_OBJECT,
+ GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_EXPLICIT_NOTIFY);
+
+ /**
+ * GtkFilterListModel:model:
+ *
+ * The model being filtered
+ */
+ properties[PROP_MODEL] =
+ g_param_spec_object ("model",
+ P_("Model"),
+ P_("The model being filtered"),
+ G_TYPE_LIST_MODEL,
+ GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_EXPLICIT_NOTIFY);
+
+ g_object_class_install_properties (gobject_class, NUM_PROPERTIES, properties);
+}
+
+static void
+gtk_filter_list_model_init (GtkFilterListModel *self)
+{
+}
+
+
+static void
+gtk_filter_list_model_augment (GtkCssRbTree *filter,
+ gpointer _aug,
+ gpointer _node,
+ gpointer left,
+ gpointer right)
+{
+ FilterNode *node= _node;
+ FilterAugment *aug = _aug;
+
+ aug->n_items = 1;
+ aug->n_visible = node->visible ? 1 : 0;
+
+ if (left)
+ {
+ FilterAugment *left_aug = gtk_css_rb_tree_get_augment (filter, left);
+ aug->n_items += left_aug->n_items;
+ aug->n_visible += left_aug->n_visible;
+ }
+ if (right)
+ {
+ FilterAugment *right_aug = gtk_css_rb_tree_get_augment (filter, right);
+ aug->n_items += right_aug->n_items;
+ aug->n_visible += right_aug->n_visible;
+ }
+}
+
+/**
+ * gtk_filter_list_model_new:
+ * @model: the model to sort
+ * @filter_func: (allow-none): filter function or %NULL to not filter items
+ * @user_data: user data passed to @filter_func
+ * @destroy: destroy notifier for @user_data
+ *
+ * Creates a new #GtkFilterListModel that will filter @model using the given
+ * @filter_func.
+ *
+ * Returns: a new #GtkFilterListModel
+ **/
+GtkFilterListModel *
+gtk_filter_list_model_new (GListModel *model,
+ GtkFilterListModelFilterFunc filter_func,
+ gpointer user_data,
+ GDestroyNotify user_destroy)
+{
+ GtkFilterListModel *result;
+
+ g_return_val_if_fail (G_IS_LIST_MODEL (model), NULL);
+
+ result = g_object_new (GTK_TYPE_FILTER_LIST_MODEL,
+ "item-type", g_list_model_get_item_type (model),
+ "model", model,
+ NULL);
+
+ if (filter_func)
+ gtk_filter_list_model_set_filter_func (result, filter_func, user_data, user_destroy);
+
+ return result;
+}
+
+/**
+ * gtk_filter_list_model_new_for_type:
+ * @item_type: the type of the items that will be returned
+ *
+ * Creates a new empty filter list model set up to return items of type @item_type.
+ * It is up to the application to set a proper filter function and model to ensure
+ * the item type is matched.
+ *
+ * Returns: a new #GtkFilterListModel
+ **/
+GtkFilterListModel *
+gtk_filter_list_model_new_for_type (GType item_type)
+{
+ g_return_val_if_fail (g_type_is_a (item_type, G_TYPE_OBJECT), NULL);
+
+ return g_object_new (GTK_TYPE_FILTER_LIST_MODEL,
+ "item-type", item_type,
+ NULL);
+}
+
+/**
+ * gtk_filter_list_model_set_filter_func:
+ * @self: a #GtkFilterListModel
+ * @filter_func: (allow-none): filter function or %NULL to not filter items
+ * @user_data: user data passed to @filter_func
+ * @destroy: destroy notifier for @user_data
+ *
+ * Sets the function used to filter items. The function will be called for every
+ * item and if it returns %TRUE the item is considered visible.
+ **/
+void
+gtk_filter_list_model_set_filter_func (GtkFilterListModel *self,
+ GtkFilterListModelFilterFunc filter_func,
+ gpointer user_data,
+ GDestroyNotify user_destroy)
+{
+ gboolean was_filtered, will_be_filtered;
+
+ g_return_if_fail (GTK_IS_FILTER_LIST_MODEL (self));
+ g_return_if_fail (filter_func != NULL || (user_data == NULL && !user_destroy));
+
+ was_filtered = self->filter_func != NULL;
+ will_be_filtered = filter_func != NULL;
+
+ if (!was_filtered && !will_be_filtered)
+ return;
+
+ if (self->user_destroy)
+ self->user_destroy (self->user_data);
+
+ self->filter_func = filter_func;
+ self->user_data = user_data;
+ self->user_destroy = user_destroy;
+
+ if (!will_be_filtered)
+ {
+ g_clear_pointer (&self->items, gtk_css_rb_tree_unref);
+ }
+ else if (!was_filtered)
+ {
+ guint i, n_items;
+
+ self->items = gtk_css_rb_tree_new (FilterNode,
+ FilterAugment,
+ gtk_filter_list_model_augment,
+ NULL, NULL);
+ if (self->model)
+ {
+ n_items = g_list_model_get_n_items (self->model);
+ for (i = 0; i < n_items; i++)
+ {
+ FilterNode *node = gtk_css_rb_tree_insert_before (self->items, NULL);
+ node->visible = TRUE;
+ }
+ }
+ }
+
+ gtk_filter_list_model_refilter (self);
+
+ if (was_filtered != will_be_filtered)
+ g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_HAS_FILTER]);
+}
+
+/**
+ * gtk_filter_list_model_set_model:
+ * @self: a #GtkFilterListModel
+ * @model: (allow-none): The model to be filtered
+ *
+ * Sets the model to be filtered.
+ *
+ * Note that GTK makes no effort to ensure that @model conforms to
+ * the item type of @self. It assumes that the caller knows what they
+ * are doing and have set up an appropriate filter function to ensure
+ * that item types match.
+ **/
+void
+gtk_filter_list_model_set_model (GtkFilterListModel *self,
+ GListModel *model)
+{
+ guint removed, added;
+
+ g_return_if_fail (GTK_IS_FILTER_LIST_MODEL (self));
+ g_return_if_fail (model == NULL || G_IS_LIST_MODEL (model));
+ /* Note: We don't check for matching item type here, we just assume the
+ * filter func takes care of filtering wrong items. */
+
+ if (self->model == model)
+ return;
+
+ removed = g_list_model_get_n_items (G_LIST_MODEL (self));
+ gtk_filter_list_model_clear_model (self);
+
+ if (model)
+ {
+ self->model = g_object_ref (model);
+ g_signal_connect (model, "items-changed", G_CALLBACK (gtk_filter_list_model_items_changed_cb), self);
+ if (self->items)
+ added = gtk_filter_list_model_add_items (self, NULL, 0, g_list_model_get_n_items (model));
+ else
+ added = g_list_model_get_n_items (model);
+ }
+ else
+ added = 0;
+
+ if (removed > 0 || added > 0)
+ g_list_model_items_changed (G_LIST_MODEL (self), 0, removed, added);
+
+ g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_MODEL]);
+}
+
+/**
+ * gtk_filter_list_model_get_model:
+ * @self: a #GtkFilterListModel
+ *
+ * Gets the model currently filtered or %NULL if none.
+ *
+ * Returns: (nullable) (transfer none): The model that gets filtered
+ **/
+GListModel *
+gtk_filter_list_model_get_model (GtkFilterListModel *self)
+{
+ g_return_val_if_fail (GTK_IS_FILTER_LIST_MODEL (self), NULL);
+
+ return self->model;
+}
+
+/**
+ * gtk_filter_list_model_has_filter:
+ * @self: a #GtkFilterListModel
+ *
+ * Checks if a filter function is currently set on @self
+ *
+ * Returns: %TRUE if a filter function is set
+ **/
+gboolean
+gtk_filter_list_model_has_filter (GtkFilterListModel *self)
+{
+ g_return_val_if_fail (GTK_IS_FILTER_LIST_MODEL (self), FALSE);
+
+ return self->filter_func != NULL;
+}
+
+/**
+ * gtk_filter_list_model_refilter:
+ * @self: a #GtkFilterListModel
+ *
+ * Causes @self to refilter all items in the model.
+ *
+ * Calling this function is necessary when data used by the filter
+ * function has changed.
+ **/
+void
+gtk_filter_list_model_refilter (GtkFilterListModel *self)
+{
+ FilterNode *node;
+ guint i, first_change, last_change;
+ guint n_is_visible, n_was_visible;
+ gboolean visible;
+
+ g_return_if_fail (GTK_IS_FILTER_LIST_MODEL (self));
+
+ if (self->items == NULL || self->model == NULL)
+ return;
+
+ first_change = G_MAXUINT;
+ last_change = 0;
+ n_is_visible = 0;
+ n_was_visible = 0;
+ for (i = 0, node = gtk_css_rb_tree_get_first (self->items);
+ node != NULL;
+ i++, node = gtk_css_rb_tree_get_next (self->items, node))
+ {
+ visible = gtk_filter_list_model_run_filter (self, i);
+ if (visible == node->visible)
+ {
+ if (visible)
+ {
+ n_is_visible++;
+ n_was_visible++;
+ }
+ continue;
+ }
+
+ node->visible = visible;
+ gtk_css_rb_tree_mark_dirty (self->items, node);
+ first_change = MIN (n_is_visible, first_change);
+ if (visible)
+ n_is_visible++;
+ else
+ n_was_visible++;
+ last_change = MAX (n_is_visible, last_change);
+ }
+
+ if (first_change <= last_change)
+ {
+ g_list_model_items_changed (G_LIST_MODEL (self),
+ first_change,
+ last_change - first_change + n_was_visible - n_is_visible,
+ last_change - first_change);
+ }
+}
+
diff --git a/gtk/gtkfilterlistmodel.h b/gtk/gtkfilterlistmodel.h
new file mode 100644
index 0000000000..f19607fd70
--- /dev/null
+++ b/gtk/gtkfilterlistmodel.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright © 2018 Benjamin Otte
+ *
+ * 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 2.1 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, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Benjamin Otte <otte gnome org>
+ */
+
+#ifndef __GTK_FILTER_LIST_MODEL_H__
+#define __GTK_FILTER_LIST_MODEL_H__
+
+
+#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk.h> can be included directly."
+#endif
+
+#include <gio/gio.h>
+#include <gtk/gtkwidget.h>
+
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_FILTER_LIST_MODEL (gtk_filter_list_model_get_type ())
+
+GDK_AVAILABLE_IN_ALL
+G_DECLARE_FINAL_TYPE (GtkFilterListModel, gtk_filter_list_model, GTK, FILTER_LIST_MODEL, GObject)
+
+typedef gboolean (* GtkFilterListModelFilterFunc) (gpointer item, gpointer data);
+
+GDK_AVAILABLE_IN_ALL
+GtkFilterListModel * gtk_filter_list_model_new (GListModel *model,
+ GtkFilterListModelFilterFunc filter_func,
+ gpointer user_data,
+ GDestroyNotify user_destroy);
+GDK_AVAILABLE_IN_ALL
+GtkFilterListModel * gtk_filter_list_model_new_for_type (GType item_type);
+
+GDK_AVAILABLE_IN_ALL
+void gtk_filter_list_model_set_filter_func (GtkFilterListModel *self,
+ GtkFilterListModelFilterFunc filter_func,
+ gpointer user_data,
+ GDestroyNotify user_destroy);
+GDK_AVAILABLE_IN_ALL
+void gtk_filter_list_model_set_model (GtkFilterListModel *self,
+ GListModel *model);
+GDK_AVAILABLE_IN_ALL
+GListModel * gtk_filter_list_model_get_model (GtkFilterListModel *self);
+GDK_AVAILABLE_IN_ALL
+gboolean gtk_filter_list_model_has_filter (GtkFilterListModel *self);
+
+GDK_AVAILABLE_IN_ALL
+void gtk_filter_list_model_refilter (GtkFilterListModel *self);
+
+G_END_DECLS
+
+#endif /* __GTK_FILTER_LIST_MODEL_H__ */
diff --git a/gtk/meson.build b/gtk/meson.build
index d191922f5b..cd962dc411 100644
--- a/gtk/meson.build
+++ b/gtk/meson.build
@@ -229,6 +229,7 @@ gtk_public_sources = files([
'gtkfilechoosernative.c',
'gtkfilechooserwidget.c',
'gtkfilefilter.c',
+ 'gtkfilterlistmodel.c',
'gtkfixed.c',
'gtkflowbox.c',
'gtkfontbutton.c',
@@ -472,6 +473,7 @@ gtk_public_headers = files([
'gtkfilechoosernative.h',
'gtkfilechooserwidget.h',
'gtkfilefilter.h',
+ 'gtkfilterlistmodel.h',
'gtkfixed.h',
'gtkflowbox.h',
'gtkfontbutton.h',
diff --git a/testsuite/gtk/defaultvalue.c b/testsuite/gtk/defaultvalue.c
index 4b559a0d23..f4c335037f 100644
--- a/testsuite/gtk/defaultvalue.c
+++ b/testsuite/gtk/defaultvalue.c
@@ -108,6 +108,14 @@ test_type (gconstpointer data)
instance = G_OBJECT (g_object_ref (gdk_surface_new_popup (display,
&(GdkRectangle) { 0, 0, 100, 100 })));
}
+ else if (g_type_is_a (type, GTK_TYPE_FILTER_LIST_MODEL))
+ {
+ GListStore *list_store = g_list_store_new (G_TYPE_OBJECT);
+ instance = g_object_new (type,
+ "model", list_store,
+ NULL);
+ g_object_unref (list_store);
+ }
else if (g_type_is_a (type, GDK_TYPE_CLIPBOARD) ||
g_str_equal (g_type_name (type), "GdkX11Cursor"))
instance = g_object_new (type, "display", display, NULL);
@@ -230,6 +238,10 @@ G_GNUC_BEGIN_IGNORE_DEPRECATIONS
G_GNUC_END_IGNORE_DEPRECATIONS
+ if (g_type_is_a (type, GTK_TYPE_FILTER_LIST_MODEL) &&
+ strcmp (pspec->name, "model") == 0)
+ continue;
+
/* This is set in init() */
if (g_type_is_a (type, GTK_TYPE_FONT_CHOOSER_WIDGET) &&
strcmp (pspec->name, "tweak-action") == 0)
diff --git a/testsuite/gtk/filterlistmodel.c b/testsuite/gtk/filterlistmodel.c
new file mode 100644
index 0000000000..1e259789dc
--- /dev/null
+++ b/testsuite/gtk/filterlistmodel.c
@@ -0,0 +1,324 @@
+/* GtkRBTree tests.
+ *
+ * Copyright (C) 2011, Red Hat, Inc.
+ * Authors: Benjamin Otte <otte gnome org>
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <locale.h>
+
+#include <gtk/gtk.h>
+
+static GQuark number_quark;
+static GQuark changes_quark;
+
+static guint
+get (GListModel *model,
+ guint position)
+{
+ GObject *object = g_list_model_get_item (model, position);
+ g_assert (object != NULL);
+ return GPOINTER_TO_UINT (g_object_get_qdata (object, number_quark));
+}
+
+static char *
+model_to_string (GListModel *model)
+{
+ GString *string = g_string_new (NULL);
+ guint i;
+
+ for (i = 0; i < g_list_model_get_n_items (model); i++)
+ {
+ if (i > 0)
+ g_string_append (string, " ");
+ g_string_append_printf (string, "%u", get (model, i));
+ }
+
+ return g_string_free (string, FALSE);
+}
+
+static GListStore *
+new_store (guint start,
+ guint end,
+ guint step);
+
+static void
+add (GListStore *store,
+ guint number)
+{
+ GObject *object;
+
+ /* 0 cannot be differentiated from NULL, so don't use it */
+ g_assert (number != 0);
+
+ object = g_object_new (G_TYPE_OBJECT, NULL);
+ g_object_set_qdata (object, number_quark, GUINT_TO_POINTER (number));
+ g_list_store_append (store, object);
+ g_object_unref (object);
+}
+
+#define assert_model(model, expected) G_STMT_START{ \
+ char *s = model_to_string (G_LIST_MODEL (model)); \
+ if (!g_str_equal (s, expected)) \
+ g_assertion_message_cmpstr (G_LOG_DOMAIN, __FILE__, __LINE__, G_STRFUNC, \
+ #model " == " #expected, s, "==", expected); \
+ g_free (s); \
+}G_STMT_END
+
+#define assert_changes(model, expected) G_STMT_START{ \
+ GString *changes = g_object_get_qdata (G_OBJECT (model), changes_quark); \
+ if (!g_str_equal (changes->str, expected)) \
+ g_assertion_message_cmpstr (G_LOG_DOMAIN, __FILE__, __LINE__, G_STRFUNC, \
+ #model " == " #expected, changes->str, "==", expected); \
+ g_string_set_size (changes, 0); \
+}G_STMT_END
+
+static GListStore *
+new_empty_store (void)
+{
+ return g_list_store_new (G_TYPE_OBJECT);
+}
+
+static GListStore *
+new_store (guint start,
+ guint end,
+ guint step)
+{
+ GListStore *store = new_empty_store ();
+ guint i;
+
+ for (i = start; i <= end; i += step)
+ add (store, i);
+
+ return store;
+}
+
+static void
+items_changed (GListModel *model,
+ guint position,
+ guint removed,
+ guint added,
+ GString *changes)
+{
+ g_assert (removed != 0 || added != 0);
+
+ if (changes->len)
+ g_string_append (changes, ", ");
+
+ if (removed == 1 && added == 0)
+ {
+ g_string_append_printf (changes, "-%u", position);
+ }
+ else if (removed == 0 && added == 1)
+ {
+ g_string_append_printf (changes, "+%u", position);
+ }
+ else
+ {
+ g_string_append_printf (changes, "%u", position);
+ if (removed > 0)
+ g_string_append_printf (changes, "-%u", removed);
+ if (added > 0)
+ g_string_append_printf (changes, "+%u", added);
+ }
+}
+
+static void
+free_changes (gpointer data)
+{
+ GString *changes = data;
+
+ /* all changes must have been checked via assert_changes() before */
+ g_assert_cmpstr (changes->str, ==, "");
+
+ g_string_free (changes, TRUE);
+}
+
+static GtkFilterListModel *
+new_model (guint size,
+ GtkFilterListModelFilterFunc filter_func,
+ gpointer data)
+{
+ GtkFilterListModel *result;
+ GString *changes;
+
+ result = gtk_filter_list_model_new (G_LIST_MODEL (new_store (1, size, 1)), filter_func, data, NULL);
+ changes = g_string_new ("");
+ g_object_set_qdata_full (G_OBJECT(result), changes_quark, changes, free_changes);
+ g_signal_connect (result, "items-changed", G_CALLBACK (items_changed), changes);
+
+ return result;
+}
+
+static gboolean
+is_smaller_than (gpointer item,
+ gpointer data)
+{
+ return g_object_get_qdata (item, number_quark) < data;
+}
+
+static gboolean
+is_larger_than (gpointer item,
+ gpointer data)
+{
+ return g_object_get_qdata (item, number_quark) > data;
+}
+
+static gboolean
+is_near (gpointer item,
+ gpointer data)
+{
+ return ABS (g_object_get_qdata (item, number_quark) - data) <= 2;
+}
+
+static gboolean
+is_not_near (gpointer item,
+ gpointer data)
+{
+ return ABS (g_object_get_qdata (item, number_quark) - data) > 2;
+}
+
+static void
+test_create (void)
+{
+ GtkFilterListModel *filter;
+
+ filter = new_model (10, NULL, NULL);
+ assert_model (filter, "1 2 3 4 5 6 7 8 9 10");
+ assert_changes (filter, "");
+ g_object_unref (filter);
+
+ filter = new_model (10, is_smaller_than, GUINT_TO_POINTER (20));
+ assert_model (filter, "1 2 3 4 5 6 7 8 9 10");
+ assert_changes (filter, "");
+ g_object_unref (filter);
+
+ filter = new_model (10, is_smaller_than, GUINT_TO_POINTER (7));
+ assert_model (filter, "1 2 3 4 5 6");
+ assert_changes (filter, "");
+ g_object_unref (filter);
+
+ filter = new_model (10, is_smaller_than, GUINT_TO_POINTER (0));
+ assert_model (filter, "");
+ assert_changes (filter, "");
+ g_object_unref (filter);
+}
+
+static void
+test_empty_set_filter_func (void)
+{
+ GtkFilterListModel *filter;
+
+ filter = new_model (10, NULL, NULL);
+ gtk_filter_list_model_set_filter_func (filter, is_smaller_than, GUINT_TO_POINTER (20), NULL);
+ assert_model (filter, "1 2 3 4 5 6 7 8 9 10");
+ assert_changes (filter, "");
+ g_object_unref (filter);
+
+ filter = new_model (10, NULL, NULL);
+ gtk_filter_list_model_set_filter_func (filter, is_smaller_than, GUINT_TO_POINTER (7), NULL);
+ assert_model (filter, "1 2 3 4 5 6");
+ assert_changes (filter, "6-4");
+ g_object_unref (filter);
+
+ filter = new_model (10, NULL, NULL);
+ gtk_filter_list_model_set_filter_func (filter, is_smaller_than, GUINT_TO_POINTER (0), NULL);
+ assert_model (filter, "");
+ assert_changes (filter, "0-10");
+ g_object_unref (filter);
+
+ filter = new_model (10, NULL, NULL);
+ gtk_filter_list_model_set_filter_func (filter, is_larger_than, GUINT_TO_POINTER (0), NULL);
+ assert_model (filter, "1 2 3 4 5 6 7 8 9 10");
+ assert_changes (filter, "");
+ g_object_unref (filter);
+
+ filter = new_model (10, NULL, NULL);
+ gtk_filter_list_model_set_filter_func (filter, is_larger_than, GUINT_TO_POINTER (3), NULL);
+ assert_model (filter, "4 5 6 7 8 9 10");
+ assert_changes (filter, "0-3");
+ g_object_unref (filter);
+
+ filter = new_model (10, NULL, NULL);
+ gtk_filter_list_model_set_filter_func (filter, is_larger_than, GUINT_TO_POINTER (20), NULL);
+ assert_model (filter, "");
+ assert_changes (filter, "0-10");
+ g_object_unref (filter);
+
+ filter = new_model (10, NULL, NULL);
+ gtk_filter_list_model_set_filter_func (filter, is_near, GUINT_TO_POINTER (5), NULL);
+ assert_model (filter, "3 4 5 6 7");
+ assert_changes (filter, "0-10+5");
+ g_object_unref (filter);
+
+ filter = new_model (10, NULL, NULL);
+ gtk_filter_list_model_set_filter_func (filter, is_not_near, GUINT_TO_POINTER (5), NULL);
+ assert_model (filter, "1 2 8 9 10");
+ assert_changes (filter, "2-5");
+ g_object_unref (filter);
+}
+
+static void
+test_change_filter_func (void)
+{
+ GtkFilterListModel *filter;
+
+ filter = new_model (10, is_not_near, GUINT_TO_POINTER (5));
+ assert_model (filter, "1 2 8 9 10");
+ assert_changes (filter, "");
+
+ gtk_filter_list_model_set_filter_func (filter, is_not_near, GUINT_TO_POINTER (6), NULL);
+ assert_model (filter, "1 2 3 9 10");
+ assert_changes (filter, "2-1+1");
+
+ gtk_filter_list_model_set_filter_func (filter, is_not_near, GUINT_TO_POINTER (9), NULL);
+ assert_model (filter, "1 2 3 4 5 6");
+ assert_changes (filter, "3-2+3");
+
+ gtk_filter_list_model_set_filter_func (filter, is_smaller_than, GUINT_TO_POINTER (6), NULL);
+ assert_model (filter, "1 2 3 4 5");
+ assert_changes (filter, "-5");
+
+ gtk_filter_list_model_set_filter_func (filter, is_larger_than, GUINT_TO_POINTER (4), NULL);
+ assert_model (filter, "5 6 7 8 9 10");
+ assert_changes (filter, "0-5+6");
+
+ gtk_filter_list_model_set_filter_func (filter, is_not_near, GUINT_TO_POINTER (2), NULL);
+ assert_model (filter, "5 6 7 8 9 10");
+ assert_changes (filter, "");
+
+ gtk_filter_list_model_set_filter_func (filter, is_not_near, GUINT_TO_POINTER (4), NULL);
+ assert_model (filter, "1 7 8 9 10");
+ assert_changes (filter, "0-2+1");
+
+ g_object_unref (filter);
+}
+
+int
+main (int argc, char *argv[])
+{
+ g_test_init (&argc, &argv, NULL);
+ setlocale (LC_ALL, "C");
+ g_test_bug_base ("http://bugzilla.gnome.org/show_bug.cgi?id=%s";);
+
+ number_quark = g_quark_from_static_string ("Hell and fire was spawned to be released.");
+ changes_quark = g_quark_from_static_string ("What did I see? Can I believe what I saw?");
+
+ g_test_add_func ("/filterlistmodel/create", test_create);
+ g_test_add_func ("/filterlistmodel/empty_set_filter_func", test_empty_set_filter_func);
+ g_test_add_func ("/filterlistmodel/change_filter_func", test_change_filter_func);
+
+ return g_test_run ();
+}
diff --git a/testsuite/gtk/meson.build b/testsuite/gtk/meson.build
index 963355cfbe..de1bcb15a7 100644
--- a/testsuite/gtk/meson.build
+++ b/testsuite/gtk/meson.build
@@ -19,6 +19,7 @@ tests = [
['cssprovider'],
['defaultvalue'],
['entry'],
+ ['filterlistmodel'],
['firefox-stylecontext'],
['floating'],
['focus'],
diff --git a/testsuite/gtk/notify.c b/testsuite/gtk/notify.c
index 13d5954fb5..6474e2656f 100644
--- a/testsuite/gtk/notify.c
+++ b/testsuite/gtk/notify.c
@@ -430,6 +430,14 @@ test_type (gconstpointer data)
NULL);
gdk_content_formats_unref (formats);
}
+ else if (g_type_is_a (type, GTK_TYPE_FILTER_LIST_MODEL))
+ {
+ GListStore *list_store = g_list_store_new (G_TYPE_OBJECT);
+ instance = g_object_new (type,
+ "model", list_store,
+ NULL);
+ g_object_unref (list_store);
+ }
else
instance = g_object_new (type, NULL);
diff --git a/testsuite/gtk/objects-finalize.c b/testsuite/gtk/objects-finalize.c
index 9e91fcca5f..cced1ccd46 100644
--- a/testsuite/gtk/objects-finalize.c
+++ b/testsuite/gtk/objects-finalize.c
@@ -64,6 +64,14 @@ test_finalize_object (gconstpointer data)
NULL);
gdk_content_formats_unref (formats);
}
+ else if (g_type_is_a (test_type, GTK_TYPE_FILTER_LIST_MODEL))
+ {
+ GListStore *list_store = g_list_store_new (G_TYPE_OBJECT);
+ object = g_object_new (test_type,
+ "model", list_store,
+ NULL);
+ g_object_unref (list_store);
+ }
else
object = g_object_new (test_type, NULL);
g_assert (G_IS_OBJECT (object));
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