Add UI for sort order settings

3 files changed, 145 insertions, 21 deletions

diff --git a/fiv-io.c b/fiv-io.c
index 518da32..012202e 100644
--- a/fiv-io.c
+++ b/fiv-io.c
@@ -2464,11 +2464,6 @@ model_entry_finalize(ModelEntry *entry)
 	g_free(entry->uri);
 }
 
-typedef enum _FivIoModelSort {
-	FIV_IO_MODEL_SORT_NAME,
-	FIV_IO_MODEL_SORT_MTIME,
-} FivIoModelSort;
-
 struct _FivIoModel {
 	GObject parent_instance;
 	gchar **supported_globs;
@@ -2478,7 +2473,7 @@ struct _FivIoModel {
 	GArray *subdirs;                    ///< "directory" contents
 	GArray *files;                      ///< "directory" contents
 
-	FivIoModelSort sort;                ///< How to sort
+	FivIoModelSort sort_field;          ///< How to sort
 	gboolean sort_descending;           ///< Whether to sort in reverse
 	gboolean filtering;                 ///< Only show non-hidden, supported
 };
@@ -2487,6 +2482,8 @@ G_DEFINE_TYPE(FivIoModel, fiv_io_model, G_TYPE_OBJECT)
 
 enum {
 	PROP_FILTERING = 1,
+	PROP_SORT_FIELD,
+	PROP_SORT_DESCENDING,
 	N_PROPERTIES
 };
 
@@ -2546,13 +2543,17 @@ model_compare_entries(FivIoModel *self, const ModelEntry *entry1, GFile *file1,
 		return -1;
 
 	int result = 0;
-	switch (self->sort) {
-	case FIV_IO_MODEL_SORT_NAME:
-		result = model_compare_name(file1, file2);
-		break;
+	switch (self->sort_field) {
 	case FIV_IO_MODEL_SORT_MTIME:
 		result -= entry1->mtime_msec < entry2->mtime_msec;
 		result += entry1->mtime_msec > entry2->mtime_msec;
+		if (result != 0)
+			break;
+
+		// Fall-through
+	case FIV_IO_MODEL_SORT_NAME:
+	case FIV_IO_MODEL_SORT_COUNT:
+		result = model_compare_name(file1, file2);
 	}
 	return self->sort_descending ? -result : +result;
 }
@@ -2570,6 +2571,16 @@ model_compare(gconstpointer a, gconstpointer b, gpointer user_data)
 	return result;
 }
 
+static void
+model_resort(FivIoModel *self)
+{
+	g_array_sort_with_data(self->subdirs, model_compare, self);
+	g_array_sort_with_data(self->files, model_compare, self);
+
+	g_signal_emit(self, model_signals[FILES_CHANGED], 0);
+	g_signal_emit(self, model_signals[SUBDIRECTORIES_CHANGED], 0);
+}
+
 static gboolean
 model_reload(FivIoModel *self, GError **error)
 {
@@ -2613,11 +2624,9 @@ model_reload(FivIoModel *self, GError **error)
 		}
 	}
 	g_object_unref(enumerator);
-	g_array_sort_with_data(self->subdirs, model_compare, self);
-	g_array_sort_with_data(self->files, model_compare, self);
 
-	g_signal_emit(self, model_signals[FILES_CHANGED], 0);
-	g_signal_emit(self, model_signals[SUBDIRECTORIES_CHANGED], 0);
+	// We also emit change signals there, indirectly.
+	model_resort(self);
 	return TRUE;
 }
 
@@ -2644,6 +2653,12 @@ fiv_io_model_get_property(
 	case PROP_FILTERING:
 		g_value_set_boolean(value, self->filtering);
 		break;
+	case PROP_SORT_FIELD:
+		g_value_set_int(value, self->sort_field);
+		break;
+	case PROP_SORT_DESCENDING:
+		g_value_set_boolean(value, self->sort_descending);
+		break;
 	default:
 		G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
 	}
@@ -2656,12 +2671,25 @@ fiv_io_model_set_property(
 	FivIoModel *self = FIV_IO_MODEL(object);
 	switch (property_id) {
 	case PROP_FILTERING:
-		if (self->filtering == g_value_get_boolean(value))
-			return;
-
-		self->filtering = !self->filtering;
-		g_object_notify_by_pspec(object, model_properties[PROP_FILTERING]);
-		(void) model_reload(self, NULL /* error */);
+		if (self->filtering != g_value_get_boolean(value)) {
+			self->filtering = !self->filtering;
+			g_object_notify_by_pspec(object, model_properties[property_id]);
+			(void) model_reload(self, NULL /* error */);
+		}
+		break;
+	case PROP_SORT_FIELD:
+		if ((int) self->sort_field != g_value_get_int(value)) {
+			self->sort_field = g_value_get_int(value);
+			g_object_notify_by_pspec(object, model_properties[property_id]);
+			model_resort(self);
+		}
+		break;
+	case PROP_SORT_DESCENDING:
+		if (self->sort_descending != g_value_get_boolean(value)) {
+			self->sort_descending = !self->sort_descending;
+			g_object_notify_by_pspec(object, model_properties[property_id]);
+			model_resort(self);
+		}
 		break;
 	default:
 		G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id, pspec);
@@ -2679,6 +2707,14 @@ fiv_io_model_class_init(FivIoModelClass *klass)
 	model_properties[PROP_FILTERING] = g_param_spec_boolean(
 		"filtering", "Filtering", "Only show non-hidden, supported entries",
 		TRUE, G_PARAM_READWRITE);
+	// TODO(p): GObject enumerations are annoying, but this should be one.
+	model_properties[PROP_SORT_FIELD] = g_param_spec_int(
+		"sort-field", "Sort field", "Sort order",
+		FIV_IO_MODEL_SORT_MIN, FIV_IO_MODEL_SORT_MAX,
+		FIV_IO_MODEL_SORT_NAME, G_PARAM_READWRITE);
+	model_properties[PROP_SORT_DESCENDING] = g_param_spec_boolean(
+		"sort-descending", "Sort descending", "Use reverse sort order",
+		FALSE, G_PARAM_READWRITE);
 	g_object_class_install_properties(
 		object_class, N_PROPERTIES, model_properties);
 
diff --git a/fiv-io.h b/fiv-io.h
index e3deac5..f8f3118 100644
--- a/fiv-io.h
+++ b/fiv-io.h
@@ -79,6 +79,15 @@ cairo_surface_t *fiv_io_open_from_data(const char *data, size_t len,
 
 // --- Filesystem --------------------------------------------------------------
 
+typedef enum _FivIoModelSort {
+	FIV_IO_MODEL_SORT_NAME,
+	FIV_IO_MODEL_SORT_MTIME,
+	FIV_IO_MODEL_SORT_COUNT,
+
+	FIV_IO_MODEL_SORT_MIN = 0,
+	FIV_IO_MODEL_SORT_MAX = FIV_IO_MODEL_SORT_COUNT - 1
+} FivIoModelSort;
+
 #define FIV_TYPE_IO_MODEL (fiv_io_model_get_type())
 G_DECLARE_FINAL_TYPE(FivIoModel, fiv_io_model, FIV, IO_MODEL, GObject)
 
diff --git a/fiv.c b/fiv.c
index 9f66c29..f8ddb10 100644
--- a/fiv.c
+++ b/fiv.c
@@ -26,6 +26,7 @@
 #include <stdlib.h>
 
 #include "config.h"
+
 #include "fiv-browser.h"
 #include "fiv-io.h"
 #include "fiv-sidebar.h"
@@ -273,6 +274,8 @@ struct {
 	GtkWidget *browser_sidebar;
 	GtkWidget *plus;
 	GtkWidget *minus;
+	GtkWidget *sort_field[FIV_IO_MODEL_SORT_COUNT];
+	GtkWidget *sort_direction[2];
 	GtkWidget *browser_scroller;
 	GtkWidget *browser;
 
@@ -437,6 +440,18 @@ on_filtering_toggled(GtkToggleButton *button, G_GNUC_UNUSED gpointer user_data)
 }
 
 static void
+on_sort_field(G_GNUC_UNUSED GtkMenuItem *item, gpointer data)
+{
+	g_object_set(g.model, "sort-field", (gint) (intptr_t) data, NULL);
+}
+
+static void
+on_sort_direction(G_GNUC_UNUSED GtkMenuItem *item, gpointer data)
+{
+	g_object_set(g.model, "sort-descending", (gboolean) (intptr_t) data, NULL);
+}
+
+static void
 open(const gchar *uri)
 {
 	GFile *file = g_file_new_for_uri(uri);
@@ -658,6 +673,26 @@ on_notify_filtering(
 }
 
 static void
+on_notify_sort_field(
+	GObject *object, GParamSpec *param_spec, G_GNUC_UNUSED gpointer user_data)
+{
+	gint field = -1;
+	g_object_get(object, g_param_spec_get_name(param_spec), &field, NULL);
+	gtk_check_menu_item_set_active(
+		GTK_CHECK_MENU_ITEM(g.sort_field[field]), TRUE);
+}
+
+static void
+on_notify_sort_descending(
+	GObject *object, GParamSpec *param_spec, G_GNUC_UNUSED gpointer user_data)
+{
+	gboolean b = FALSE;
+	g_object_get(object, g_param_spec_get_name(param_spec), &b, NULL);
+	gtk_check_menu_item_set_active(
+		GTK_CHECK_MENU_ITEM(g.sort_direction[b]), TRUE);
+}
+
+static void
 toggle_fullscreen(void)
 {
 	if (gdk_window_get_state(gtk_widget_get_window(g.window)) &
@@ -1180,17 +1215,61 @@ make_browser_sidebar(FivIoModel *model)
 	g_signal_connect(funnel, "toggled",
 		G_CALLBACK(on_filtering_toggled), NULL);
 
+	GtkWidget *menu = gtk_menu_new();
+	g.sort_field[0] = gtk_radio_menu_item_new_with_mnemonic(NULL, "By _Name");
+	g.sort_field[1] = gtk_radio_menu_item_new_with_mnemonic(
+		gtk_radio_menu_item_get_group(GTK_RADIO_MENU_ITEM(g.sort_field[0])),
+		"By _Modification Time");
+	for (int i = FIV_IO_MODEL_SORT_MIN; i <= FIV_IO_MODEL_SORT_MAX; i++) {
+		g_signal_connect(g.sort_field[i], "activate",
+			G_CALLBACK(on_sort_field), (void *) (intptr_t) i);
+		gtk_menu_shell_append(GTK_MENU_SHELL(menu), g.sort_field[i]);
+	}
+
+	g.sort_direction[0] =
+		gtk_radio_menu_item_new_with_mnemonic(NULL, "_Ascending");
+	g.sort_direction[1] = gtk_radio_menu_item_new_with_mnemonic(
+		gtk_radio_menu_item_get_group(GTK_RADIO_MENU_ITEM(g.sort_direction[0])),
+		"_Descending");
+	g_signal_connect(g.sort_direction[0], "activate",
+		G_CALLBACK(on_sort_direction), (void *) 0);
+	g_signal_connect(g.sort_direction[1], "activate",
+		G_CALLBACK(on_sort_direction), (void *) 1);
+
+	gtk_menu_shell_append(GTK_MENU_SHELL(menu), gtk_separator_menu_item_new());
+	gtk_menu_shell_append(GTK_MENU_SHELL(menu), g.sort_direction[0]);
+	gtk_menu_shell_append(GTK_MENU_SHELL(menu), g.sort_direction[1]);
+	gtk_widget_show_all(menu);
+
+	GtkWidget *sort = gtk_menu_button_new();
+	gtk_widget_set_tooltip_text(sort, "Sort order");
+	gtk_button_set_image(GTK_BUTTON(sort),
+		gtk_image_new_from_icon_name(
+			"view-sort-ascending-symbolic", GTK_ICON_SIZE_BUTTON));
+	gtk_menu_button_set_popup(GTK_MENU_BUTTON(sort), menu);
+
+	GtkWidget *model_group = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 0);
+	gtk_style_context_add_class(
+		gtk_widget_get_style_context(model_group), GTK_STYLE_CLASS_LINKED);
+	gtk_box_pack_start(GTK_BOX(model_group), funnel, FALSE, FALSE, 0);
+	gtk_box_pack_start(GTK_BOX(model_group), sort, FALSE, FALSE, 0);
+
 	GtkBox *toolbar = fiv_sidebar_get_toolbar(FIV_SIDEBAR(sidebar));
 	gtk_box_pack_start(toolbar, zoom_group, FALSE, FALSE, 0);
-	gtk_box_pack_start(toolbar, funnel, FALSE, FALSE, 0);
+	gtk_box_pack_start(toolbar, model_group, FALSE, FALSE, 0);
 	gtk_widget_set_halign(GTK_WIDGET(toolbar), GTK_ALIGN_CENTER);
 
 	g_signal_connect(g.browser, "notify::thumbnail-size",
 		G_CALLBACK(on_notify_thumbnail_size), NULL);
 	g_signal_connect(model, "notify::filtering",
 		G_CALLBACK(on_notify_filtering), funnel);
+	g_signal_connect(model, "notify::sort-field",
+		G_CALLBACK(on_notify_sort_field), NULL);
+	g_signal_connect(model, "notify::sort-descending",
+		G_CALLBACK(on_notify_sort_descending), NULL);
 	on_toolbar_zoom(NULL, (gpointer) 0);
 	gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(funnel), TRUE);
+	// TODO(p): Invoke sort configuration notifications explicitly.
 	return sidebar;
 }