[gtk/prop-list: 12/154] filter: Add GtkStringFilter
- From: Matthias Clasen <matthiasc src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk/prop-list: 12/154] filter: Add GtkStringFilter
- Date: Tue, 3 Dec 2019 01:29:42 +0000 (UTC)
commit 9cde404c40519de0c6d4c5c800e9e491eeaa16ba
Author: Benjamin Otte <otte redhat com>
Date: Sat Nov 16 22:15:51 2019 +0100
filter: Add GtkStringFilter
Users provide a search filter and an expression that evaluates the items
to a string and then the filter goes and matches those strings to the
search term.
gtk/gtk.h | 1 +
gtk/gtkstringfilter.c | 415 +++++++++++++++++++++++++++++++++++++++++++++++++
gtk/gtkstringfilter.h | 64 ++++++++
gtk/meson.build | 2 +
testsuite/gtk/filter.c | 156 +++++++++++++++++++
5 files changed, 638 insertions(+)
---
diff --git a/gtk/gtk.h b/gtk/gtk.h
index 82a253a401..e1f2d56f1f 100644
--- a/gtk/gtk.h
+++ b/gtk/gtk.h
@@ -227,6 +227,7 @@
#include <gtk/gtkstack.h>
#include <gtk/gtkstackswitcher.h>
#include <gtk/gtkstatusbar.h>
+#include <gtk/gtkstringfilter.h>
#include <gtk/gtkstylecontext.h>
#include <gtk/gtkstyleprovider.h>
#include <gtk/gtkswitch.h>
diff --git a/gtk/gtkstringfilter.c b/gtk/gtkstringfilter.c
new file mode 100644
index 0000000000..4ce6c44f8c
--- /dev/null
+++ b/gtk/gtkstringfilter.c
@@ -0,0 +1,415 @@
+/*
+ * Copyright © 2019 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 "gtkstringfilter.h"
+
+#include "gtkintl.h"
+#include "gtktypebuiltins.h"
+
+struct _GtkStringFilter
+{
+ GtkFilter parent_instance;
+
+ char *search;
+ char *search_collated;
+
+ gboolean ignore_case;
+ gboolean match_substring;
+
+ GtkExpression *expression;
+};
+
+enum {
+ PROP_0,
+ PROP_EXPRESSION,
+ PROP_IGNORE_CASE,
+ PROP_MATCH_SUBSTRING,
+ PROP_SEARCH,
+ NUM_PROPERTIES
+};
+
+G_DEFINE_TYPE (GtkStringFilter, gtk_string_filter, GTK_TYPE_FILTER)
+
+static GParamSpec *properties[NUM_PROPERTIES] = { NULL, };
+
+static char *
+gtk_string_filter_collate (GtkStringFilter *self,
+ const char *s)
+{
+ char *result, *tmp;
+
+ if (s == NULL || s[0] == '\0')
+ return NULL;
+
+ if (!self->ignore_case)
+ return g_utf8_collate_key (s, -1);
+
+ tmp = g_utf8_casefold (s, -1);
+ result = g_utf8_collate_key (tmp, -1);
+ g_free (tmp);
+
+ return result;
+}
+
+static gboolean
+gtk_string_filter_filter (GtkFilter *filter,
+ gpointer item)
+{
+ GtkStringFilter *self = GTK_STRING_FILTER (filter);
+ GValue value = G_VALUE_INIT;
+ char *collated;
+ const char *s;
+ gboolean result;
+
+ if (self->search_collated == NULL)
+ return TRUE;
+
+ if (self->expression == NULL ||
+ !gtk_expression_evaluate (self->expression, item, &value))
+ return FALSE;
+ s = g_value_get_string (&value);
+ if (s == NULL)
+ return FALSE;
+ collated = gtk_string_filter_collate (self, s);
+
+ if (self->match_substring)
+ result = strstr (collated, self->search_collated) != NULL;
+ else
+ result = strcmp (collated, self->search_collated) == 0;
+
+#if 0
+ g_print ("%s (%s) %s %s (%s)\n", s, collated, result ? "==" : "!=", self->search, self->search_collated);
+#endif
+
+ g_free (collated);
+ g_value_unset (&value);
+
+ return result;
+}
+
+static void
+gtk_string_filter_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GtkStringFilter *self = GTK_STRING_FILTER (object);
+
+ switch (prop_id)
+ {
+ case PROP_EXPRESSION:
+ gtk_string_filter_set_expression (self, g_value_get_boxed (value));
+ break;
+
+ case PROP_IGNORE_CASE:
+ gtk_string_filter_set_ignore_case (self, g_value_get_boolean (value));
+ break;
+
+ case PROP_MATCH_SUBSTRING:
+ gtk_string_filter_set_match_substring (self, g_value_get_boolean (value));
+ break;
+
+ case PROP_SEARCH:
+ gtk_string_filter_set_search (self, g_value_get_string (value));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gtk_string_filter_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GtkStringFilter *self = GTK_STRING_FILTER (object);
+
+ switch (prop_id)
+ {
+ case PROP_EXPRESSION:
+ g_value_set_boxed (value, self->expression);
+ break;
+
+ case PROP_IGNORE_CASE:
+ g_value_set_boolean (value, self->ignore_case);
+ break;
+
+ case PROP_MATCH_SUBSTRING:
+ g_value_set_boolean (value, self->match_substring);
+ break;
+
+ case PROP_SEARCH:
+ g_value_set_string (value, self->search);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gtk_string_filter_dispose (GObject *object)
+{
+ GtkStringFilter *self = GTK_STRING_FILTER (object);
+
+ g_clear_pointer (&self->search, g_free);
+ g_clear_pointer (&self->search_collated, g_free);
+ g_clear_pointer (&self->expression, gtk_expression_unref);
+
+ G_OBJECT_CLASS (gtk_string_filter_parent_class)->dispose (object);
+}
+
+static void
+gtk_string_filter_class_init (GtkStringFilterClass *class)
+{
+ GtkFilterClass *filter_class = GTK_FILTER_CLASS (class);
+ GObjectClass *object_class = G_OBJECT_CLASS (class);
+
+ filter_class->filter = gtk_string_filter_filter;
+
+ object_class->get_property = gtk_string_filter_get_property;
+ object_class->set_property = gtk_string_filter_set_property;
+ object_class->dispose = gtk_string_filter_dispose;
+
+ /**
+ * GtkStringFilter:expression:
+ *
+ * The expression to evalute on item to get a string to compare with
+ */
+ properties[PROP_EXPRESSION] =
+ g_param_spec_boxed ("expression",
+ P_("Expression"),
+ P_("Expression to compare with"),
+ GTK_TYPE_EXPRESSION,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_EXPLICIT_NOTIFY);
+
+ /**
+ * GtkStringFilter:ignore-case:
+ *
+ * If matching is case sensitive
+ */
+ properties[PROP_IGNORE_CASE] =
+ g_param_spec_boolean ("ignore-case",
+ P_("Ignore case"),
+ P_("If matching is case sensitive"),
+ TRUE,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_EXPLICIT_NOTIFY);
+
+ /**
+ * GtkStringFilter:match-substring:
+ *
+ * If exact matches are necessary or if substrings are allowed
+ */
+ properties[PROP_MATCH_SUBSTRING] =
+ g_param_spec_boolean ("match-substring",
+ P_("Match substring"),
+ P_("If exact matches are necessary or if substrings are allowed"),
+ TRUE,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_EXPLICIT_NOTIFY);
+
+ /**
+ * GtkStringFilter:search:
+ *
+ * The search term
+ */
+ properties[PROP_SEARCH] =
+ g_param_spec_string ("search",
+ P_("Search"),
+ P_("The search term"),
+ NULL,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_EXPLICIT_NOTIFY);
+
+ g_object_class_install_properties (object_class, NUM_PROPERTIES, properties);
+
+}
+
+static void
+gtk_string_filter_init (GtkStringFilter *self)
+{
+ self->ignore_case = TRUE;
+ self->match_substring = TRUE;
+
+ gtk_filter_changed (GTK_FILTER (self), GTK_FILTER_CHANGE_MATCH_ALL);
+}
+
+/**
+ * gtk_string_filter_new:
+ *
+ * Creates a new string filter.
+ *
+ * You will want to set up the filter by providing a string to search for
+ * and by providing a property to look up on the item.
+ *
+ * Returns: a new #GtkStringFilter
+ **/
+GtkFilter *
+gtk_string_filter_new (void)
+{
+ return g_object_new (GTK_TYPE_STRING_FILTER, NULL);
+}
+
+/**
+ * gtk_string_filter_get_search:
+ * @self: a #GtkStringFilter
+ *
+ * Gets the search string set via gtk_string_filter_set_search().
+ *
+ * Returns: (allow-none) (transfer none): The search string
+ **/
+const char *
+gtk_string_filter_get_search (GtkStringFilter *self)
+{
+ g_return_val_if_fail (GTK_IS_STRING_FILTER (self), NULL);
+
+ return self->search;
+}
+
+/**
+ * gtk_string_filter_set_search:
+ * @self: a #GtkStringFilter
+ * @search: (transfer none) (nullable): The string to search for
+ * or %NULL to clear the search
+ *
+ * Sets the string to search for.
+ **/
+void
+gtk_string_filter_set_search (GtkStringFilter *self,
+ const char *search)
+{
+ GtkFilterChange change;
+
+ g_return_if_fail (GTK_IS_STRING_FILTER (self));
+
+ if (g_strcmp0 (self->search, search) == 0)
+ return;
+
+ if (search == NULL || search[0] == 0)
+ change = GTK_FILTER_CHANGE_MATCH_ALL;
+ else if (self->search == NULL)
+ change = GTK_FILTER_CHANGE_MORE_STRICT;
+ else if (g_str_has_prefix (search, self->search))
+ change = GTK_FILTER_CHANGE_MORE_STRICT;
+ else if (g_str_has_prefix (self->search, search))
+ change = GTK_FILTER_CHANGE_LESS_STRICT;
+ else
+ change = GTK_FILTER_CHANGE_DIFFERENT;
+
+ g_free (self->search);
+ g_free (self->search_collated);
+
+ self->search = g_strdup (search);
+ self->search_collated = gtk_string_filter_collate (self, search);
+
+ gtk_filter_changed (GTK_FILTER (self), change);
+
+ g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_SEARCH]);
+}
+
+GtkExpression *
+gtk_string_filter_get_expression (GtkStringFilter *self)
+{
+ g_return_val_if_fail (GTK_IS_STRING_FILTER (self), NULL);
+
+ return self->expression;
+}
+
+void
+gtk_string_filter_set_expression (GtkStringFilter *self,
+ GtkExpression *expression)
+{
+ g_return_if_fail (GTK_IS_STRING_FILTER (self));
+ if (expression)
+ {
+ g_return_if_fail (gtk_expression_get_value_type (expression) == G_TYPE_STRING);
+ }
+
+ if (self->expression == expression)
+ return;
+
+ g_clear_pointer (&self->expression, gtk_expression_unref);
+ self->expression = gtk_expression_ref (expression);
+
+ if (self->search)
+ gtk_filter_changed (GTK_FILTER (self), GTK_FILTER_CHANGE_DIFFERENT);
+
+ g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_EXPRESSION]);
+}
+
+gboolean
+gtk_string_filter_get_ignore_case (GtkStringFilter *self)
+{
+ g_return_val_if_fail (GTK_IS_STRING_FILTER (self), TRUE);
+
+ return self->ignore_case;
+}
+
+void
+gtk_string_filter_set_ignore_case (GtkStringFilter *self,
+ gboolean ignore_case)
+{
+ g_return_if_fail (GTK_IS_STRING_FILTER (self));
+
+ if (self->ignore_case == ignore_case)
+ return;
+
+ self->ignore_case = ignore_case;
+
+ if (self->search)
+ {
+ g_free (self->search_collated);
+ self->search_collated = gtk_string_filter_collate (self, self->search);
+ gtk_filter_changed (GTK_FILTER (self), ignore_case ? GTK_FILTER_CHANGE_LESS_STRICT :
GTK_FILTER_CHANGE_MORE_STRICT);
+ }
+
+ g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_IGNORE_CASE]);
+}
+
+gboolean
+gtk_string_filter_get_match_substring (GtkStringFilter *self)
+{
+ g_return_val_if_fail (GTK_IS_STRING_FILTER (self), TRUE);
+
+ return self->match_substring;
+}
+
+
+void
+gtk_string_filter_set_match_substring (GtkStringFilter *self,
+ gboolean match_substring)
+{
+ g_return_if_fail (GTK_IS_STRING_FILTER (self));
+
+ if (self->match_substring == match_substring)
+ return;
+
+ self->match_substring = match_substring;
+
+ if (self->search)
+ gtk_filter_changed (GTK_FILTER (self), match_substring ? GTK_FILTER_CHANGE_LESS_STRICT :
GTK_FILTER_CHANGE_MORE_STRICT);
+
+ g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_MATCH_SUBSTRING]);
+}
+
+
diff --git a/gtk/gtkstringfilter.h b/gtk/gtkstringfilter.h
new file mode 100644
index 0000000000..3571fad2f2
--- /dev/null
+++ b/gtk/gtkstringfilter.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright © 2019 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_STRING_FILTER_H__
+#define __GTK_STRING_FILTER_H__
+
+#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
+#error "Only <gtk/gtk.h> can be included directly."
+#endif
+
+#include <gtk/gtkexpression.h>
+#include <gtk/gtkfilter.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_STRING_FILTER (gtk_string_filter_get_type ())
+GDK_AVAILABLE_IN_ALL
+G_DECLARE_FINAL_TYPE (GtkStringFilter, gtk_string_filter, GTK, STRING_FILTER, GtkFilter)
+
+GDK_AVAILABLE_IN_ALL
+GtkFilter * gtk_string_filter_new (void);
+
+GDK_AVAILABLE_IN_ALL
+const char * gtk_string_filter_get_search (GtkStringFilter *self);
+GDK_AVAILABLE_IN_ALL
+void gtk_string_filter_set_search (GtkStringFilter *self,
+ const char *search);
+GDK_AVAILABLE_IN_ALL
+GtkExpression * gtk_string_filter_get_expression (GtkStringFilter *self);
+GDK_AVAILABLE_IN_ALL
+void gtk_string_filter_set_expression (GtkStringFilter *self,
+ GtkExpression *expression);
+GDK_AVAILABLE_IN_ALL
+gboolean gtk_string_filter_get_ignore_case (GtkStringFilter *self);
+GDK_AVAILABLE_IN_ALL
+void gtk_string_filter_set_ignore_case (GtkStringFilter *self,
+ gboolean ignore_case);
+GDK_AVAILABLE_IN_ALL
+gboolean gtk_string_filter_get_match_substring (GtkStringFilter *self);
+GDK_AVAILABLE_IN_ALL
+void gtk_string_filter_set_match_substring (GtkStringFilter *self,
+ gboolean match_substring);
+
+
+
+G_END_DECLS
+
+#endif /* __GTK_STRING_FILTER_H__ */
diff --git a/gtk/meson.build b/gtk/meson.build
index e4297501e0..cb040748b1 100644
--- a/gtk/meson.build
+++ b/gtk/meson.build
@@ -368,6 +368,7 @@ gtk_public_sources = files([
'gtkstacksidebar.c',
'gtkstackswitcher.c',
'gtkstatusbar.c',
+ 'gtkstringfilter.c',
'gtkstylecontext.c',
'gtkstyleprovider.c',
'gtkswitch.c',
@@ -622,6 +623,7 @@ gtk_public_headers = files([
'gtkstacksidebar.h',
'gtkstackswitcher.h',
'gtkstatusbar.h',
+ 'gtkstringfilter.h',
'gtkstylecontext.h',
'gtkstyleprovider.h',
'gtkswitch.h',
diff --git a/testsuite/gtk/filter.c b/testsuite/gtk/filter.c
index af5505e604..b7aa741828 100644
--- a/testsuite/gtk/filter.c
+++ b/testsuite/gtk/filter.c
@@ -32,6 +32,90 @@ get (GListModel *model,
return GPOINTER_TO_UINT (g_object_get_qdata (object, number_quark));
}
+static char *
+get_string (gpointer object)
+{
+ return g_strdup_printf ("%u", GPOINTER_TO_UINT (g_object_get_qdata (object, number_quark)));
+}
+
+static void
+append_digit (GString *s,
+ guint digit)
+{
+ static char *names[10] = { NULL, "one", "two", "three", "four", "five", "six", "seven", "eight", "nine" };
+
+ if (digit == 0)
+ return;
+
+ g_assert (digit < 10);
+
+ if (s->len)
+ g_string_append_c (s, ' ');
+ g_string_append (s, names[digit]);
+}
+
+static void
+append_below_thousand (GString *s,
+ guint n)
+{
+ if (n >= 100)
+ {
+ append_digit (s, n / 100);
+ g_string_append (s, " hundred");
+ n %= 100;
+ }
+
+ if (n >= 20)
+ {
+ const char *names[10] = { NULL, NULL, "twenty", "thirty", "fourty", "fifty", "sixty", "seventy",
"eighty", "ninety" };
+ if (s->len)
+ g_string_append_c (s, ' ');
+ g_string_append (s, names [n / 10]);
+ n %= 10;
+ }
+
+ if (n >= 10)
+ {
+ const char *names[10] = { "ten", "eleven", "twelve", "thirteen", "fourteen",
+ "fifteen", "sixteen", "seventeen", "eighteen", "nineteen" };
+ if (s->len)
+ g_string_append_c (s, ' ');
+ g_string_append (s, names [n - 10]);
+ }
+ else
+ {
+ append_digit (s, n);
+ }
+}
+
+static char *
+get_spelled_out (gpointer object)
+{
+ guint n = GPOINTER_TO_UINT (g_object_get_qdata (object, number_quark));
+ GString *s;
+
+ g_assert (n < 1000000);
+
+ if (n == 0)
+ return g_strdup ("Zero");
+
+ s = g_string_new (NULL);
+
+ if (n >= 1000)
+ {
+ append_below_thousand (s, n / 1000);
+ g_string_append (s, " thousand");
+ n %= 1000;
+ }
+
+ append_below_thousand (s, n);
+
+ /* Capitalize first letter so we can do case-sensitive matching */
+ s->str[0] = g_ascii_toupper (s->str[0]);
+
+ return g_string_free (s, FALSE);
+}
+
static char *
model_to_string (GListModel *model)
{
@@ -162,6 +246,76 @@ test_any_simple (void)
g_object_unref (any);
}
+static void
+test_string_simple (void)
+{
+ GtkFilterListModel *model;
+ GtkFilter *filter;
+ GtkExpression *expr;
+
+ expr = gtk_cclosure_expression_new (G_TYPE_STRING,
+ NULL,
+ 0, NULL,
+ G_CALLBACK (get_string),
+ NULL, NULL);
+
+ filter = gtk_string_filter_new ();
+ gtk_string_filter_set_expression (GTK_STRING_FILTER (filter), expr);
+
+ model = new_model (20, filter);
+ assert_model (model, "1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20");
+
+ gtk_string_filter_set_search (GTK_STRING_FILTER (filter), "1");
+ assert_model (model, "1 10 11 12 13 14 15 16 17 18 19");
+
+ g_object_unref (model);
+ g_object_unref (filter);
+ gtk_expression_unref (expr);
+}
+
+static void
+test_string_properties (void)
+{
+ GtkFilterListModel *model;
+ GtkFilter *filter;
+ GtkExpression *expr;
+
+ expr = gtk_cclosure_expression_new (G_TYPE_STRING,
+ NULL,
+ 0, NULL,
+ G_CALLBACK (get_spelled_out),
+ NULL, NULL);
+
+ filter = gtk_string_filter_new ();
+ gtk_string_filter_set_expression (GTK_STRING_FILTER (filter), expr);
+
+ model = new_model (1000, filter);
+ gtk_string_filter_set_search (GTK_STRING_FILTER (filter), "thirte");
+ assert_model (model, "13 113 213 313 413 513 613 713 813 913");
+
+ gtk_string_filter_set_search (GTK_STRING_FILTER (filter), "thirteen");
+ assert_model (model, "13 113 213 313 413 513 613 713 813 913");
+
+ gtk_string_filter_set_ignore_case (GTK_STRING_FILTER (filter), FALSE);
+ assert_model (model, "113 213 313 413 513 613 713 813 913");
+
+ gtk_string_filter_set_search (GTK_STRING_FILTER (filter), "Thirteen");
+ assert_model (model, "13");
+
+ gtk_string_filter_set_match_substring (GTK_STRING_FILTER (filter), FALSE);
+ assert_model (model, "13");
+
+ gtk_string_filter_set_ignore_case (GTK_STRING_FILTER (filter), TRUE);
+ assert_model (model, "13");
+
+ gtk_string_filter_set_match_substring (GTK_STRING_FILTER (filter), TRUE);
+ assert_model (model, "13 113 213 313 413 513 613 713 813 913");
+
+ g_object_unref (model);
+ g_object_unref (filter);
+ gtk_expression_unref (expr);
+}
+
int
main (int argc, char *argv[])
{
@@ -172,6 +326,8 @@ main (int argc, char *argv[])
g_test_add_func ("/filter/simple", test_simple);
g_test_add_func ("/filter/any/simple", test_any_simple);
+ g_test_add_func ("/filter/string/simple", test_string_simple);
+ g_test_add_func ("/filter/string/properties", test_string_properties);
return g_test_run ();
}
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