From 788bb949f10275f616aa85105fdfba08fa0b129f Mon Sep 17 00:00:00 2001 From: Christian Hergert Date: Mon, 10 Jul 2023 10:39:42 -0700 Subject: [PATCH] sysprof: add SysprofSingleModel This model is a helper so that we can create a ListModel with a single item in it as can be useful from UI files. --- src/sysprof/meson.build | 1 + src/sysprof/sysprof-single-model.c | 182 +++++++++++++++++++++++++++++ src/sysprof/sysprof-single-model.h | 36 ++++++ 3 files changed, 219 insertions(+) create mode 100644 src/sysprof/sysprof-single-model.c create mode 100644 src/sysprof/sysprof-single-model.h diff --git a/src/sysprof/meson.build b/src/sysprof/meson.build index 89a6da4b..781b857e 100644 --- a/src/sysprof/meson.build +++ b/src/sysprof/meson.build @@ -10,6 +10,7 @@ sysprof_sources = [ 'sysprof-samples-section.c', 'sysprof-section.c', 'sysprof-sidebar.c', + 'sysprof-single-model.c', 'sysprof-window.c', ] diff --git a/src/sysprof/sysprof-single-model.c b/src/sysprof/sysprof-single-model.c new file mode 100644 index 00000000..b4312dff --- /dev/null +++ b/src/sysprof/sysprof-single-model.c @@ -0,0 +1,182 @@ +/* sysprof-single-model.c + * + * Copyright 2023 Christian Hergert + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + * SPDX-License-Identifier: GPL-3.0-or-later + */ + +#include "config.h" + +#include "sysprof-single-model.h" + +struct _SysprofSingleModel +{ + GObject parent_instance; + GObject *item; +}; + +enum { + PROP_0, + PROP_ITEM, + N_PROPS +}; + +static guint +get_n_items (GListModel *model) +{ + return SYSPROF_SINGLE_MODEL (model)->item ? 1 : 0; +} + +static gpointer +get_item (GListModel *model, + guint position) +{ + if (position == 0 && SYSPROF_SINGLE_MODEL (model)->item) + return g_object_ref (SYSPROF_SINGLE_MODEL (model)->item); + return NULL; +} + +static GType +get_item_type (GListModel *model) +{ + if (SYSPROF_SINGLE_MODEL (model)->item) + return G_OBJECT_TYPE (SYSPROF_SINGLE_MODEL (model)->item); + return G_TYPE_OBJECT; +} + +static void +list_model_iface_init (GListModelInterface *iface) +{ + iface->get_n_items = get_n_items; + iface->get_item = get_item; + iface->get_item_type = get_item_type; +} + +G_DEFINE_FINAL_TYPE_WITH_CODE (SysprofSingleModel, sysprof_single_model, G_TYPE_OBJECT, + G_IMPLEMENT_INTERFACE (G_TYPE_LIST_MODEL, list_model_iface_init)) + +static GParamSpec *properties[N_PROPS]; + +static void +sysprof_single_model_finalize (GObject *object) +{ + SysprofSingleModel *self = (SysprofSingleModel *)object; + + g_clear_object (&self->item); + + G_OBJECT_CLASS (sysprof_single_model_parent_class)->finalize (object); +} + +static void +sysprof_single_model_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + SysprofSingleModel *self = SYSPROF_SINGLE_MODEL (object); + + switch (prop_id) + { + case PROP_ITEM: + g_value_set_object (value, sysprof_single_model_get_item (self)); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + } +} + +static void +sysprof_single_model_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + SysprofSingleModel *self = SYSPROF_SINGLE_MODEL (object); + + switch (prop_id) + { + case PROP_ITEM: + sysprof_single_model_set_item (self, g_value_get_object (value)); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + } +} + +static void +sysprof_single_model_class_init (SysprofSingleModelClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + object_class->finalize = sysprof_single_model_finalize; + object_class->get_property = sysprof_single_model_get_property; + object_class->set_property = sysprof_single_model_set_property; + + properties[PROP_ITEM] = + g_param_spec_object ("item", NULL, NULL, + G_TYPE_OBJECT, + (G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS)); + + g_object_class_install_properties (object_class, N_PROPS, properties); +} + +static void +sysprof_single_model_init (SysprofSingleModel *self) +{ +} + +SysprofSingleModel * +sysprof_single_model_new (void) +{ + return g_object_new (SYSPROF_TYPE_SINGLE_MODEL, NULL); +} + +gpointer +sysprof_single_model_get_item (SysprofSingleModel *self) +{ + g_return_val_if_fail (SYSPROF_IS_SINGLE_MODEL (self), NULL); + + return self->item; +} + +void +sysprof_single_model_set_item (SysprofSingleModel *self, + gpointer item) +{ + g_return_if_fail (SYSPROF_IS_SINGLE_MODEL (self)); + g_return_if_fail (!item || G_IS_OBJECT (item)); + + if (self->item == item) + return; + + if (item) + g_object_ref (item); + + if (self->item != NULL) + { + g_clear_object (&self->item); + g_list_model_items_changed (G_LIST_MODEL (self), 0, 1, 0); + } + + self->item = item; + + if (self->item != NULL) + g_list_model_items_changed (G_LIST_MODEL (self), 0, 0, 1); + + g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_ITEM]); +} diff --git a/src/sysprof/sysprof-single-model.h b/src/sysprof/sysprof-single-model.h new file mode 100644 index 00000000..61b58a48 --- /dev/null +++ b/src/sysprof/sysprof-single-model.h @@ -0,0 +1,36 @@ +/* sysprof-single-model.h + * + * Copyright 2023 Christian Hergert + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + * SPDX-License-Identifier: GPL-3.0-or-later + */ + +#pragma once + +#include + +G_BEGIN_DECLS + +#define SYSPROF_TYPE_SINGLE_MODEL (sysprof_single_model_get_type()) + +G_DECLARE_FINAL_TYPE (SysprofSingleModel, sysprof_single_model, SYSPROF, SINGLE_MODEL, GObject) + +SysprofSingleModel *sysprof_single_model_new (void); +gpointer sysprof_single_model_get_item (SysprofSingleModel *self); +void sysprof_single_model_set_item (SysprofSingleModel *self, + gpointer item); + +G_END_DECLS