359 lines
10 KiB
C
359 lines
10 KiB
C
|
/* ide-truncate-model.c
|
||
|
|
*
|
||
|
|
* Copyright 2019 Christian Hergert <chergert@redhat.com>
|
||
|
|
*
|
||
|
|
* 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 <http://www.gnu.org/licenses/>.
|
||
|
|
*
|
||
|
|
* SPDX-License-Identifier: GPL-3.0-or-later
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define G_LOG_DOMAIN "ide-truncate-model"
|
||
|
|
|
||
|
|
#include "config.h"
|
||
|
|
|
||
|
|
#include "ide-truncate-model.h"
|
||
|
|
|
||
|
|
#define DEFAULT_MAX_ITEMS 4
|
||
|
|
|
||
|
|
struct _IdeTruncateModel
|
||
|
|
{
|
||
|
|
GObject parent_instance;
|
||
|
|
GListModel *child_model;
|
||
|
|
guint max_items;
|
||
|
|
guint prev_n_items;
|
||
|
|
guint expanded : 1;
|
||
|
|
};
|
||
|
|
|
||
|
|
static gpointer
|
||
|
|
ide_truncate_model_get_item (GListModel *model,
|
||
|
|
guint position)
|
||
|
|
{
|
||
|
|
return g_list_model_get_item (IDE_TRUNCATE_MODEL (model)->child_model, position);
|
||
|
|
}
|
||
|
|
|
||
|
|
static guint
|
||
|
|
ide_truncate_model_get_n_items (GListModel *model)
|
||
|
|
{
|
||
|
|
IdeTruncateModel *self = (IdeTruncateModel *)model;
|
||
|
|
guint n_items = g_list_model_get_n_items (IDE_TRUNCATE_MODEL (model)->child_model);
|
||
|
|
return self->expanded ? n_items : MIN (n_items, self->max_items);
|
||
|
|
}
|
||
|
|
|
||
|
|
static GType
|
||
|
|
ide_truncate_model_get_item_type (GListModel *model)
|
||
|
|
{
|
||
|
|
return g_list_model_get_item_type (IDE_TRUNCATE_MODEL (model)->child_model);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
list_model_iface_init (GListModelInterface *iface)
|
||
|
|
{
|
||
|
|
iface->get_item = ide_truncate_model_get_item;
|
||
|
|
iface->get_n_items = ide_truncate_model_get_n_items;
|
||
|
|
iface->get_item_type = ide_truncate_model_get_item_type;
|
||
|
|
}
|
||
|
|
|
||
|
|
G_DEFINE_FINAL_TYPE_WITH_CODE (IdeTruncateModel, ide_truncate_model, G_TYPE_OBJECT,
|
||
|
|
G_IMPLEMENT_INTERFACE (G_TYPE_LIST_MODEL, list_model_iface_init))
|
||
|
|
|
||
|
|
enum {
|
||
|
|
PROP_0,
|
||
|
|
PROP_CAN_EXPAND,
|
||
|
|
PROP_CHILD_MODEL,
|
||
|
|
PROP_EXPANDED,
|
||
|
|
PROP_MAX_ITEMS,
|
||
|
|
N_PROPS
|
||
|
|
};
|
||
|
|
|
||
|
|
static GParamSpec *properties [N_PROPS];
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ide_truncate_model_new:
|
||
|
|
* @child_model: a #GListModel
|
||
|
|
*
|
||
|
|
* Create a new #IdeTruncateModel that wraps @child_model. Only
|
||
|
|
* #IdeTruncateModel:max-items will be displayed until
|
||
|
|
* #IdeTrunicateModel:expanded is set.
|
||
|
|
*
|
||
|
|
* Returns: (transfer full): a newly created #IdeTruncateModel
|
||
|
|
*/
|
||
|
|
IdeTruncateModel *
|
||
|
|
ide_truncate_model_new (GListModel *child_model)
|
||
|
|
{
|
||
|
|
g_return_val_if_fail (G_IS_LIST_MODEL (child_model), NULL);
|
||
|
|
|
||
|
|
return g_object_new (IDE_TYPE_TRUNCATE_MODEL,
|
||
|
|
"child-model", child_model,
|
||
|
|
NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
ide_truncate_model_items_changed_cb (IdeTruncateModel *self,
|
||
|
|
guint position,
|
||
|
|
guint removed,
|
||
|
|
guint added,
|
||
|
|
GListModel *model)
|
||
|
|
{
|
||
|
|
guint n_items;
|
||
|
|
|
||
|
|
g_assert (IDE_IS_TRUNCATE_MODEL (self));
|
||
|
|
g_assert (G_IS_LIST_MODEL (model));
|
||
|
|
|
||
|
|
n_items = g_list_model_get_n_items (model);
|
||
|
|
|
||
|
|
if (self->expanded)
|
||
|
|
{
|
||
|
|
g_list_model_items_changed (G_LIST_MODEL (self), position, removed, added);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (position < (self->max_items - 1))
|
||
|
|
{
|
||
|
|
g_list_model_items_changed (G_LIST_MODEL (self),
|
||
|
|
0,
|
||
|
|
self->prev_n_items,
|
||
|
|
MIN (n_items, self->max_items));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
self->prev_n_items = n_items;
|
||
|
|
|
||
|
|
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_CAN_EXPAND]);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
ide_truncate_model_finalize (GObject *object)
|
||
|
|
{
|
||
|
|
IdeTruncateModel *self = (IdeTruncateModel *)object;
|
||
|
|
|
||
|
|
g_clear_object (&self->child_model);
|
||
|
|
|
||
|
|
G_OBJECT_CLASS (ide_truncate_model_parent_class)->finalize (object);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
ide_truncate_model_get_property (GObject *object,
|
||
|
|
guint prop_id,
|
||
|
|
GValue *value,
|
||
|
|
GParamSpec *pspec)
|
||
|
|
{
|
||
|
|
IdeTruncateModel *self = IDE_TRUNCATE_MODEL (object);
|
||
|
|
|
||
|
|
switch (prop_id)
|
||
|
|
{
|
||
|
|
case PROP_CAN_EXPAND:
|
||
|
|
g_value_set_boolean (value, ide_truncate_model_get_can_expand (self));
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PROP_CHILD_MODEL:
|
||
|
|
g_value_set_object (value, ide_truncate_model_get_child_model (self));
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PROP_MAX_ITEMS:
|
||
|
|
g_value_set_uint (value, ide_truncate_model_get_max_items (self));
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PROP_EXPANDED:
|
||
|
|
g_value_set_boolean (value, ide_truncate_model_get_expanded (self));
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
ide_truncate_model_set_property (GObject *object,
|
||
|
|
guint prop_id,
|
||
|
|
const GValue *value,
|
||
|
|
GParamSpec *pspec)
|
||
|
|
{
|
||
|
|
IdeTruncateModel *self = IDE_TRUNCATE_MODEL (object);
|
||
|
|
|
||
|
|
switch (prop_id)
|
||
|
|
{
|
||
|
|
case PROP_CHILD_MODEL:
|
||
|
|
self->child_model = g_value_dup_object (value);
|
||
|
|
self->prev_n_items = g_list_model_get_n_items (self->child_model);
|
||
|
|
g_signal_connect_object (self->child_model,
|
||
|
|
"items-changed",
|
||
|
|
G_CALLBACK (ide_truncate_model_items_changed_cb),
|
||
|
|
self,
|
||
|
|
G_CONNECT_SWAPPED);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PROP_MAX_ITEMS:
|
||
|
|
ide_truncate_model_set_max_items (self, g_value_get_uint (value));
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PROP_EXPANDED:
|
||
|
|
ide_truncate_model_set_expanded (self, g_value_get_boolean (value));
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
ide_truncate_model_class_init (IdeTruncateModelClass *klass)
|
||
|
|
{
|
||
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
||
|
|
|
||
|
|
object_class->finalize = ide_truncate_model_finalize;
|
||
|
|
object_class->get_property = ide_truncate_model_get_property;
|
||
|
|
object_class->set_property = ide_truncate_model_set_property;
|
||
|
|
|
||
|
|
properties [PROP_CAN_EXPAND] =
|
||
|
|
g_param_spec_boolean ("can-expand",
|
||
|
|
"Can Expand",
|
||
|
|
"If the model can be expanded",
|
||
|
|
FALSE,
|
||
|
|
(G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
|
||
|
|
|
||
|
|
/**
|
||
|
|
* IdeTruncateModel:child-model:
|
||
|
|
*
|
||
|
|
* The "child-model" property is the model to be trunicated.
|
||
|
|
*/
|
||
|
|
properties [PROP_CHILD_MODEL] =
|
||
|
|
g_param_spec_object ("child-model",
|
||
|
|
"Child Model",
|
||
|
|
"Child GListModel",
|
||
|
|
G_TYPE_LIST_MODEL,
|
||
|
|
(G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
|
||
|
|
|
||
|
|
properties [PROP_MAX_ITEMS] =
|
||
|
|
g_param_spec_uint ("max-items",
|
||
|
|
"Max Items",
|
||
|
|
"Max items to display when not expanded",
|
||
|
|
0, G_MAXUINT, DEFAULT_MAX_ITEMS,
|
||
|
|
(G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
|
||
|
|
|
||
|
|
properties [PROP_EXPANDED] =
|
||
|
|
g_param_spec_boolean ("expanded",
|
||
|
|
"Expanded",
|
||
|
|
"If all the items should be displayed",
|
||
|
|
FALSE,
|
||
|
|
(G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
|
||
|
|
|
||
|
|
g_object_class_install_properties (object_class, N_PROPS, properties);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
ide_truncate_model_init (IdeTruncateModel *self)
|
||
|
|
{
|
||
|
|
self->max_items = DEFAULT_MAX_ITEMS;
|
||
|
|
}
|
||
|
|
|
||
|
|
gboolean
|
||
|
|
ide_truncate_model_get_expanded (IdeTruncateModel *self)
|
||
|
|
{
|
||
|
|
g_return_val_if_fail (IDE_IS_TRUNCATE_MODEL (self), FALSE);
|
||
|
|
|
||
|
|
return self->expanded;
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
ide_truncate_model_set_expanded (IdeTruncateModel *self,
|
||
|
|
gboolean expanded)
|
||
|
|
{
|
||
|
|
g_return_if_fail (IDE_IS_TRUNCATE_MODEL (self));
|
||
|
|
|
||
|
|
expanded = !!expanded;
|
||
|
|
|
||
|
|
if (expanded != self->expanded)
|
||
|
|
{
|
||
|
|
guint n_items = g_list_model_get_n_items (self->child_model);
|
||
|
|
guint old_n_items = self->expanded ? n_items : MIN (n_items, self->max_items);
|
||
|
|
guint new_n_items = expanded ? n_items : MIN (n_items, self->max_items);
|
||
|
|
|
||
|
|
self->expanded = expanded;
|
||
|
|
|
||
|
|
if (new_n_items > old_n_items)
|
||
|
|
g_list_model_items_changed (G_LIST_MODEL (self),
|
||
|
|
old_n_items,
|
||
|
|
0,
|
||
|
|
new_n_items - old_n_items);
|
||
|
|
else
|
||
|
|
g_list_model_items_changed (G_LIST_MODEL (self),
|
||
|
|
0, old_n_items, new_n_items);
|
||
|
|
|
||
|
|
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_EXPANDED]);
|
||
|
|
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_CAN_EXPAND]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
guint
|
||
|
|
ide_truncate_model_get_max_items (IdeTruncateModel *self)
|
||
|
|
{
|
||
|
|
g_return_val_if_fail (IDE_IS_TRUNCATE_MODEL (self), 0);
|
||
|
|
|
||
|
|
return self->max_items;
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
ide_truncate_model_set_max_items (IdeTruncateModel *self,
|
||
|
|
guint max_items)
|
||
|
|
{
|
||
|
|
g_return_if_fail (IDE_IS_TRUNCATE_MODEL (self));
|
||
|
|
|
||
|
|
if (max_items == 0)
|
||
|
|
max_items = DEFAULT_MAX_ITEMS;
|
||
|
|
|
||
|
|
if (max_items != self->max_items)
|
||
|
|
{
|
||
|
|
guint old_max_items = self->max_items;
|
||
|
|
|
||
|
|
self->max_items = max_items;
|
||
|
|
|
||
|
|
if (!self->expanded)
|
||
|
|
{
|
||
|
|
guint n_items = g_list_model_get_n_items (self->child_model);
|
||
|
|
guint old_n_items = MIN (old_max_items, n_items);
|
||
|
|
guint new_n_items = MIN (max_items, n_items);
|
||
|
|
|
||
|
|
if (old_n_items != new_n_items)
|
||
|
|
g_list_model_items_changed (G_LIST_MODEL (self), 0, old_n_items, new_n_items);
|
||
|
|
}
|
||
|
|
|
||
|
|
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_MAX_ITEMS]);
|
||
|
|
g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_CAN_EXPAND]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* ide_truncate_model_get_child_model:
|
||
|
|
*
|
||
|
|
* Gets the #IdeTruncateModel:child-model property.
|
||
|
|
*
|
||
|
|
* Returns: (transfer none): a #GListModel
|
||
|
|
*/
|
||
|
|
GListModel *
|
||
|
|
ide_truncate_model_get_child_model (IdeTruncateModel *self)
|
||
|
|
{
|
||
|
|
g_return_val_if_fail (IDE_IS_TRUNCATE_MODEL (self), NULL);
|
||
|
|
|
||
|
|
return self->child_model;
|
||
|
|
}
|
||
|
|
|
||
|
|
gboolean
|
||
|
|
ide_truncate_model_get_can_expand (IdeTruncateModel *self)
|
||
|
|
{
|
||
|
|
g_return_val_if_fail (IDE_IS_TRUNCATE_MODEL (self), FALSE);
|
||
|
|
|
||
|
|
return !self->expanded &&
|
||
|
|
g_list_model_get_n_items (self->child_model) > self->max_items;
|
||
|
|
}
|