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mutter/clutter/clutter-model.c
Emmanuele Bassi 2b81d90dd7 Eliminate G_CONST_RETURN 
The G_CONST_RETURN define in GLib is, and has always been, a bit fuzzy.

We always used it to conform to the platform, at least for public-facing
API.

At first I assumed it has something to do with brain-damaged compilers
or with weird platforms where const was not really supported; sadly,
it's something much, much worse: it's a define that can be toggled at
compile-time to remove const from the signature of public API. This is a
truly terrifying feature that I assume was added in the past century,
and whose inception clearly had something to do with massive doses of
absynthe and opium — because any other explanation would make the
existence of such a feature even worse than assuming drugs had anything
to do with it.

Anyway, and pleasing the gods, this dubious feature is being
removed/deprecated in GLib; see bug:

  https://bugzilla.gnome.org/show_bug.cgi?id=644611

Before deprecation, though, we should just remove its usage from the
whole API. We should especially remove its usage from Cally's internals,
since there it never made sense in the first place.
2011-06-07 16:06:24 +01:00

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/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Authored By Matthew Allum <mallum@openedhand.com>
* Neil Jagdish Patel <njp@o-hand.com>
* Emmanuele Bassi <ebassi@openedhand.com>
*
* Copyright (C) 2006 OpenedHand
*
* 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/>.
*
*
*
* NB: Inspiration for column storage taken from GtkListStore
*/
/**
* SECTION:clutter-model
* @short_description: A generic model implementation
*
* #ClutterModel is a generic list model API which can be used to implement
* the model-view-controller architectural pattern in Clutter.
*
* The #ClutterModel class is a list model which can accept most GObject
* types as a column type.
*
* Creating a simple clutter model:
* <informalexample><programlisting>
* enum
* {
* COLUMN_INT,
* COLUMN_STRING,
*
* N_COLUMNS
* };
*
* {
* ClutterModel *model;
* gint i;
*
* model = clutter_model_default_new (N_COLUMNS,
* /<!-- -->* column type, column title *<!-- -->/
* G_TYPE_INT, "my integers",
* G_TYPE_STRING, "my strings");
* for (i = 0; i < 10; i++)
* {
* gchar *string = g_strdup_printf ("String %d", i);
* clutter_model_append (model,
* COLUMN_INT, i,
* COLUMN_STRING, string,
* -1);
* g_free (string);
* }
*
*
* }
* </programlisting></informalexample>
*
* Iterating through the model consists of retrieving a new #ClutterModelIter
* pointing to the starting row, and calling clutter_model_iter_next() or
* clutter_model_iter_prev() to move forward or backwards, repectively.
*
* A valid #ClutterModelIter represents the position between two rows in the
* model. For example, the "first" iterator represents the gap immediately
* before the first row, and the "last" iterator represents the gap immediately
* after the last row. In an empty sequence, the first and last iterators are
* the same.
*
* Iterating a #ClutterModel:
* <informalexample><programlisting>
* enum
* {
* COLUMN_INT,
* COLUMN_STRING.
*
* N_COLUMNS
* };
*
* {
* ClutterModel *model;
* ClutterModelIter *iter = NULL;
*
* /<!-- -->* Fill the model *<!-- -->/
* model = populate_model ();
*
* /<!-- -->* Get the first iter *<!-- -->/
* iter = clutter_model_get_first_iter (model);
* while (!clutter_model_iter_is_last (iter))
* {
* print_row (iter);
*
* iter = clutter_model_iter_next (iter);
* }
*
* /<!-- -->* Make sure to unref the iter *<!-- -->/
* g_object_unref (iter);
* }
* </programlisting></informalexample>
*
* #ClutterModel is an abstract class. Clutter provides a list model
* implementation called #ClutterListModel which has been optimised
* for insertion and look up in sorted lists.
*
* <refsect2 id="ClutterModel-script">
* <title>ClutterModel custom properties for #ClutterScript</title>
* <para>#ClutterModel defines a custom property "columns" for #ClutterScript
* which allows defining the column names and types. It also defines a custom
* "rows" property which allows filling the #ClutterModel with some
* data.</para>
* <example id="ClutterModel-script-example">
* <title>Example of the "columns" and "rows" custom properties</title>
* <para>The definition below will create a #ClutterListModel with three
* columns: the first one with name "Name" and containing strings; the
* second one with name "Score" and containing integers; the third one with
* name "Icon" and containing #ClutterTexture<!-- -->s. The model is filled
* with three rows. A row can be defined either with an array that holds
* all columns of a row, or an object that holds "column-name" :
* "column-value" pairs.
* </para>
* <programlisting>
* {
* "type" : "ClutterListModel",
* "id" : "teams-model",
* "columns" : [
* [ "Name", "gchararray" ],
* [ "Score", "gint" ],
* [ "Icon", "ClutterTexture" ]
* ],
* "rows" : [
* [ "Team 1", 42, { "type" : "ClutterTexture", "filename" : "team1.png" } ],
* [ "Team 2", 23, "team2-icon-script-id" ],
* { "Name" : "Team 3", "Icon" : "team3-icon-script-id" }
* ]
* }
* </programlisting>
* </example>
* </refsect2>
*
* #ClutterModel is available since Clutter 0.6
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <glib-object.h>
#include <gobject/gvaluecollector.h>
#include "clutter-model.h"
#include "clutter-model-private.h"
#include "clutter-marshal.h"
#include "clutter-private.h"
#include "clutter-debug.h"
#include "clutter-scriptable.h"
#include "clutter-script-private.h"
static void clutter_scriptable_iface_init (ClutterScriptableIface *iface);
G_DEFINE_ABSTRACT_TYPE_WITH_CODE
(ClutterModel, clutter_model, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_SCRIPTABLE,
clutter_scriptable_iface_init));
enum
{
PROP_0,
PROP_FILTER_SET
};
enum
{
ROW_ADDED,
ROW_REMOVED,
ROW_CHANGED,
SORT_CHANGED,
FILTER_CHANGED,
LAST_SIGNAL
};
static guint model_signals[LAST_SIGNAL] = { 0, };
#define CLUTTER_MODEL_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), CLUTTER_TYPE_MODEL, ClutterModelPrivate))
struct _ClutterModelPrivate
{
GType *column_types;
gchar **column_names;
/* we use an integer here because we want to be able to use -1 as a
* guard value, to allow calling set_names() and set_types() from
* sub-classes of ClutterModel. see bug:
*
* http://bugzilla.openedhand.com/show_bug.cgi?id=2032
*
* for a reference.
*/
gint n_columns;
ClutterModelFilterFunc filter_func;
gpointer filter_data;
GDestroyNotify filter_notify;
gint sort_column;
ClutterModelSortFunc sort_func;
gpointer sort_data;
GDestroyNotify sort_notify;
};
static GType
clutter_model_real_get_column_type (ClutterModel *model,
guint column)
{
ClutterModelPrivate *priv = model->priv;
if (column < 0 || column >= clutter_model_get_n_columns (model))
return G_TYPE_INVALID;
return priv->column_types[column];
}
static const gchar *
clutter_model_real_get_column_name (ClutterModel *model,
guint column)
{
ClutterModelPrivate *priv = model->priv;
if (column < 0 || column >= clutter_model_get_n_columns (model))
return NULL;
if (priv->column_names && priv->column_names[column])
return priv->column_names[column];
return g_type_name (priv->column_types[column]);
}
static guint
clutter_model_real_get_n_columns (ClutterModel *model)
{
ClutterModelPrivate *priv = model->priv;
if (priv->n_columns < 0)
return 0;
return priv->n_columns;
}
static guint
clutter_model_real_get_n_rows (ClutterModel *model)
{
ClutterModelIter *iter;
guint row_count;
g_return_val_if_fail (CLUTTER_IS_MODEL (model), 0);
iter = clutter_model_get_first_iter (model);
if (iter == NULL)
return 0;
row_count = 0;
while (!clutter_model_iter_is_last (iter))
{
if (clutter_model_filter_iter (model, iter))
row_count += 1;
iter = clutter_model_iter_next (iter);
}
g_object_unref (iter);
return row_count;
}
static void
clutter_model_finalize (GObject *object)
{
ClutterModelPrivate *priv = CLUTTER_MODEL (object)->priv;
gint i;
if (priv->sort_notify)
priv->sort_notify (priv->sort_data);
if (priv->filter_notify)
priv->filter_notify (priv->filter_data);
g_free (priv->column_types);
if (priv->column_names != NULL)
{
/* the column_names vector might have holes in it, so we need
* to use the columns number to clear up everything
*/
for (i = 0; i < priv->n_columns; i++)
g_free (priv->column_names[i]);
g_free (priv->column_names);
}
G_OBJECT_CLASS (clutter_model_parent_class)->finalize (object);
}
static void
clutter_model_get_property (GObject *gobject,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ClutterModelPrivate *priv = CLUTTER_MODEL (gobject)->priv;
switch (prop_id)
{
case PROP_FILTER_SET:
g_value_set_boolean (value, priv->filter_func != NULL);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
clutter_model_class_init (ClutterModelClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GParamSpec *pspec;
gobject_class->get_property = clutter_model_get_property;
gobject_class->finalize = clutter_model_finalize;
g_type_class_add_private (gobject_class, sizeof (ClutterModelPrivate));
klass->get_column_name = clutter_model_real_get_column_name;
klass->get_column_type = clutter_model_real_get_column_type;
klass->get_n_columns = clutter_model_real_get_n_columns;
klass->get_n_rows = clutter_model_real_get_n_rows;
/**
* ClutterModel:filter-set:
*
* Whether the #ClutterModel has a filter set
*
* This property is set to %TRUE if a filter function has been
* set using clutter_model_set_filter()
*
* Since: 1.0
*/
pspec = g_param_spec_boolean ("filter-set",
"Filter Set",
"Whether the model has a filter",
FALSE,
CLUTTER_PARAM_READABLE);
g_object_class_install_property (gobject_class, PROP_FILTER_SET, pspec);
/**
* ClutterModel::row-added:
* @model: the #ClutterModel on which the signal is emitted
* @iter: a #ClutterModelIter pointing to the new row
*
* The ::row-added signal is emitted when a new row has been added.
* The data on the row has already been set when the ::row-added signal
* has been emitted.
*
* Since: 0.6
*/
model_signals[ROW_ADDED] =
g_signal_new ("row-added",
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ClutterModelClass, row_added),
NULL, NULL,
_clutter_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
CLUTTER_TYPE_MODEL_ITER);
/**
* ClutterModel::row-removed:
* @model: the #ClutterModel on which the signal is emitted
* @iter: a #ClutterModelIter pointing to the removed row
*
* The ::row-removed signal is emitted when a row has been removed.
* The data on the row pointed by the passed iterator is still valid
* when the ::row-removed signal has been emitted.
*
* Since: 0.6
*/
model_signals[ROW_REMOVED] =
g_signal_new ("row-removed",
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ClutterModelClass, row_removed),
NULL, NULL,
_clutter_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
CLUTTER_TYPE_MODEL_ITER);
/**
* ClutterModel::row-changed:
* @model: the #ClutterModel on which the signal is emitted
* @iter: a #ClutterModelIter pointing to the changed row
*
* The ::row-removed signal is emitted when a row has been changed.
* The data on the row has already been updated when the ::row-changed
* signal has been emitted.
*
* Since: 0.6
*/
model_signals[ROW_CHANGED] =
g_signal_new ("row-changed",
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ClutterModelClass, row_changed),
NULL, NULL,
_clutter_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
CLUTTER_TYPE_MODEL_ITER);
/**
* ClutterModel::sort-changed:
* @model: the #ClutterModel on which the signal is emitted
*
* The ::sort-changed signal is emitted after the model has been sorted
*
* Since: 0.6
*/
model_signals[SORT_CHANGED] =
g_signal_new ("sort-changed",
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ClutterModelClass, sort_changed),
NULL, NULL,
_clutter_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* ClutterModel::filter-changed:
* @model: the #ClutterModel on which the signal is emitted
*
* The ::filter-changed signal is emitted when a new filter has been applied
*
* Since: 0.6
*/
model_signals[FILTER_CHANGED] =
g_signal_new ("filter-changed",
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ClutterModelClass, filter_changed),
NULL, NULL,
_clutter_marshal_VOID__VOID,
G_TYPE_NONE, 0);
}
static void
clutter_model_init (ClutterModel *self)
{
ClutterModelPrivate *priv;
self->priv = priv = CLUTTER_MODEL_GET_PRIVATE (self);
priv->n_columns = -1;
priv->column_types = NULL;
priv->column_names = NULL;
priv->filter_func = NULL;
priv->filter_data = NULL;
priv->filter_notify = NULL;
priv->sort_column = -1;
priv->sort_func = NULL;
priv->sort_data = NULL;
priv->sort_notify = NULL;
}
/* XXX - is this whitelist really necessary? we accept every fundamental
* type.
*/
gboolean
clutter_model_check_type (GType gtype)
{
gint i = 0;
static const GType type_list[] =
{
G_TYPE_BOOLEAN,
G_TYPE_CHAR,
G_TYPE_UCHAR,
G_TYPE_INT,
G_TYPE_UINT,
G_TYPE_LONG,
G_TYPE_ULONG,
G_TYPE_INT64,
G_TYPE_UINT64,
G_TYPE_ENUM,
G_TYPE_FLAGS,
G_TYPE_FLOAT,
G_TYPE_DOUBLE,
G_TYPE_STRING,
G_TYPE_POINTER,
G_TYPE_BOXED,
G_TYPE_OBJECT,
G_TYPE_INVALID
};
if (! G_TYPE_IS_VALUE_TYPE (gtype))
return FALSE;
while (type_list[i] != G_TYPE_INVALID)
{
if (g_type_is_a (gtype, type_list[i]))
return TRUE;
i++;
}
return FALSE;
}
typedef struct {
gchar *name;
GType type;
} ColumnInfo;
static gboolean
clutter_model_parse_custom_node (ClutterScriptable *scriptable,
ClutterScript *script,
GValue *value,
const gchar *name,
JsonNode *node)
{
if (strcmp (name, "columns") == 0)
{
GSList *columns = NULL;
GList *elements, *l;
if (JSON_NODE_TYPE (node) != JSON_NODE_ARRAY)
return FALSE;
elements = json_array_get_elements (json_node_get_array (node));
for (l = elements; l != NULL; l = l->next)
{
JsonNode *child_node = l->data;
JsonArray *array = json_node_get_array (child_node);
ColumnInfo *cinfo;
const gchar *column_name;
const gchar *type_name;
if (JSON_NODE_TYPE (node) != JSON_NODE_ARRAY ||
json_array_get_length (array) != 2)
{
g_warning ("A column must be an array of "
"[\"column-name\", \"GType-name\"] pairs");
return FALSE;
}
column_name = json_array_get_string_element (array, 0);
type_name = json_array_get_string_element (array, 1);
cinfo = g_slice_new0 (ColumnInfo);
cinfo->name = g_strdup (column_name);
cinfo->type = clutter_script_get_type_from_name (script, type_name);
columns = g_slist_prepend (columns, cinfo);
}
g_list_free (elements);
g_value_init (value, G_TYPE_POINTER);
g_value_set_pointer (value, g_slist_reverse (columns));
return TRUE;
}
else if (strcmp (name, "rows") == 0)
{
GSList *rows = NULL;
GList *elements, *l;
if (JSON_NODE_TYPE (node) != JSON_NODE_ARRAY)
return FALSE;
/*
* at this point we have no information about the column types, so
* we just copy the json elements and resolve them in the
* set_custom_property method
*/
elements = json_array_get_elements (json_node_get_array (node));
for (l = elements; l != NULL; l = l->next)
rows = g_slist_prepend (rows, json_node_copy (l->data));
g_list_free (elements);
g_value_init (value, G_TYPE_POINTER);
g_value_set_pointer (value, g_slist_reverse (rows));
return TRUE;
}
return FALSE;
}
static void
clutter_model_set_custom_property (ClutterScriptable *scriptable,
ClutterScript *script,
const gchar *name,
const GValue *value)
{
if (strcmp (name, "columns") == 0)
{
ClutterModel *model = CLUTTER_MODEL (scriptable);
GSList *columns, *l;
guint n_columns;
gint i;
columns = g_value_get_pointer (value);
n_columns = g_slist_length (columns);
clutter_model_set_n_columns (model, n_columns, TRUE, TRUE);
for (i = 0, l = columns; l != NULL; l = l->next, i++)
{
ColumnInfo *cinfo = l->data;
clutter_model_set_column_name (model, i, cinfo->name);
clutter_model_set_column_type (model, i, cinfo->type);
g_free (cinfo->name);
g_slice_free (ColumnInfo, cinfo);
}
g_slist_free (columns);
}
else if (strcmp (name, "rows") == 0)
{
ClutterModel *model = CLUTTER_MODEL (scriptable);
GSList *rows, *l;
guint n_columns, row = 0;
rows = g_value_get_pointer (value);
n_columns = clutter_model_get_n_columns (model);
for (l = rows; l; l = l->next)
{
JsonNode *node = l->data;
guint *columns, i, n_values = 0;
GValueArray *values;
if (JSON_NODE_TYPE (node) == JSON_NODE_ARRAY)
{
JsonArray *array = json_node_get_array (node);
if (json_array_get_length (array) != n_columns)
{
g_warning ("Row %d contains the wrong count of columns",
g_slist_position (rows, l) + 1);
row++;
continue;
}
n_values = n_columns;
columns = g_new (guint, n_values);
values = g_value_array_new (n_values);
for (i = 0; i < n_values; i++)
{
GType column_type;
const gchar *column_name;
GValue v = { 0, };
column_type = clutter_model_get_column_type (model, i);
column_name = clutter_model_get_column_name (model, i);
columns[i] = i;
g_value_init (&v, column_type);
clutter_script_parse_node (script, &v, column_name,
json_array_get_element (array, i),
NULL);
g_value_array_append (values, &v);
g_value_unset (&v);
}
}
else if (JSON_NODE_TYPE (node) == JSON_NODE_OBJECT)
{
JsonObject *object = json_node_get_object (node);
GList *members, *m;
guint column = 0;
n_values = json_object_get_size (object);
columns = g_new (guint, n_values);
values = g_value_array_new (n_values);
members = json_object_get_members (object);
for (m = members; m; m = m->next)
{
const gchar *mname = m->data;
for (i = 0; i < clutter_model_get_n_columns (model); i++)
{
const gchar *cname;
cname = clutter_model_get_column_name (model, i);
if (strcmp (mname, cname) == 0)
{
JsonNode *member;
GType col_type;
const gchar *col_name;
GValue v = { 0, };
col_type = clutter_model_get_column_type (model, i);
col_name = clutter_model_get_column_name (model, i);
columns[column] = i;
g_value_init (&v, col_type);
member = json_object_get_member (object, mname);
clutter_script_parse_node (script, &v,
col_name, member,
NULL);
g_value_array_append (values, &v);
g_value_unset (&v);
break;
}
}
column++;
}
}
else
{
row++;
continue;
}
clutter_model_insertv (model, row, n_values, columns, values->values);
g_value_array_free (values);
g_free (columns);
json_node_free (node);
row++;
}
g_slist_free (rows);
}
}
static void
clutter_scriptable_iface_init (ClutterScriptableIface *iface)
{
iface->parse_custom_node = clutter_model_parse_custom_node;
iface->set_custom_property = clutter_model_set_custom_property;
}
/**
* clutter_model_resort:
* @model: a #ClutterModel
*
* Force a resort on the @model. This function should only be
* used by subclasses of #ClutterModel.
*
* Since: 0.6
*/
void
clutter_model_resort (ClutterModel *model)
{
ClutterModelPrivate *priv;
ClutterModelClass *klass;
g_return_if_fail (CLUTTER_IS_MODEL (model));
priv = model->priv;
klass = CLUTTER_MODEL_GET_CLASS (model);
if (klass->resort)
klass->resort (model, priv->sort_func, priv->sort_data);
}
/**
* clutter_model_filter_row:
* @model: a #ClutterModel
* @row: the row to filter
*
* Checks whether @row should be filtered or not using the
* filtering function set on @model.
*
* This function should be used only by subclasses of #ClutterModel.
*
* Return value: %TRUE if the row should be displayed,
* %FALSE otherwise
*
* Since: 0.6
*/
gboolean
clutter_model_filter_row (ClutterModel *model,
guint row)
{
ClutterModelPrivate *priv;
ClutterModelIter *iter;
gboolean res = TRUE;
g_return_val_if_fail (CLUTTER_IS_MODEL (model), TRUE);
priv = model->priv;
if (!priv->filter_func)
return TRUE;
iter = clutter_model_get_iter_at_row (model, row);
if (iter == NULL)
return FALSE;
res = priv->filter_func (model, iter, priv->filter_data);
g_object_unref (iter);
return res;
}
/**
* clutter_model_filter_iter:
* @model: a #ClutterModel
* @iter: the row to filter
*
* Checks whether the row pointer by @iter should be filtered or not using
* the filtering function set on @model.
*
* This function should be used only by subclasses of #ClutterModel.
*
* Return value: %TRUE if the row should be displayed,
* %FALSE otherwise
*
* Since: 0.6
*/
gboolean
clutter_model_filter_iter (ClutterModel *model,
ClutterModelIter *iter)
{
ClutterModelPrivate *priv;
g_return_val_if_fail (CLUTTER_IS_MODEL (model), TRUE);
g_return_val_if_fail (CLUTTER_IS_MODEL_ITER (iter), TRUE);
priv = model->priv;
if (!priv->filter_func)
return TRUE;
return priv->filter_func (model, iter, priv->filter_data);
}
/*
* clutter_model_set_n_columns:
* @model: a #ClutterModel
* @n_columns: number of columns
* @set_types: set the columns type
* @set_names: set the columns name
*
* Sets the number of columns in @model to @n_columns. If @set_types
* or @set_names are %TRUE, initialises the columns type and name
* arrays as well.
*
* This function can only be called once.
*/
void
clutter_model_set_n_columns (ClutterModel *model,
gint n_columns,
gboolean set_types,
gboolean set_names)
{
ClutterModelPrivate *priv = model->priv;
if (priv->n_columns > 0 && priv->n_columns != n_columns)
return;
priv->n_columns = n_columns;
if (set_types && !priv->column_types)
priv->column_types = g_new0 (GType, n_columns);
if (set_names && !priv->column_names)
priv->column_names = g_new0 (gchar*, n_columns);
}
/*
* clutter_model_set_column_type:
* @model: a #ClutterModel
* @column: column index
* @gtype: type of the column
*
* Sets the type of @column inside @model
*/
void
clutter_model_set_column_type (ClutterModel *model,
gint column,
GType gtype)
{
ClutterModelPrivate *priv = model->priv;
priv->column_types[column] = gtype;
}
/*
* clutter_model_set_column_name:
* @model: a #ClutterModel
* @column: column index
* @name: name of the column, or %NULL
*
* Sets the name of @column inside @model
*/
void
clutter_model_set_column_name (ClutterModel *model,
gint column,
const gchar *name)
{
ClutterModelPrivate *priv = model->priv;
priv->column_names[column] = g_strdup (name);
}
/**
* clutter_model_set_types:
* @model: a #ClutterModel
* @n_columns: number of columns for the model
* @types: (array length=n_columns): an array of #GType types
*
* Sets the types of the columns inside a #ClutterModel.
*
* This function is meant primarily for #GObjects that inherit from
* #ClutterModel, and should only be used when contructing a #ClutterModel.
* It will not work after the initial creation of the #ClutterModel.
*
* Since: 0.6
*/
void
clutter_model_set_types (ClutterModel *model,
guint n_columns,
GType *types)
{
ClutterModelPrivate *priv;
gint i;
g_return_if_fail (CLUTTER_IS_MODEL (model));
g_return_if_fail (n_columns > 0);
priv = model->priv;
g_return_if_fail (priv->n_columns < 0 || priv->n_columns == n_columns);
g_return_if_fail (priv->column_types == NULL);
clutter_model_set_n_columns (model, n_columns, TRUE, FALSE);
for (i = 0; i < n_columns; i++)
{
if (!clutter_model_check_type (types[i]))
{
g_warning ("%s: Invalid type %s\n", G_STRLOC, g_type_name (types[i]));
return;
}
clutter_model_set_column_type (model, i, types[i]);
}
}
/**
* clutter_model_set_names:
* @model: a #ClutterModel
* @n_columns: the number of column names
* @names: (array length=n_columns): an array of strings
*
* Assigns a name to the columns of a #ClutterModel.
*
* This function is meant primarily for #GObjects that inherit from
* #ClutterModel, and should only be used when contructing a #ClutterModel.
* It will not work after the initial creation of the #ClutterModel.
*
* Since: 0.6
*/
void
clutter_model_set_names (ClutterModel *model,
guint n_columns,
const gchar * const names[])
{
ClutterModelPrivate *priv;
gint i;
g_return_if_fail (CLUTTER_IS_MODEL (model));
g_return_if_fail (n_columns > 0);
priv = model->priv;
g_return_if_fail (priv->n_columns < 0 || priv->n_columns == n_columns);
g_return_if_fail (priv->column_names == NULL);
clutter_model_set_n_columns (model, n_columns, FALSE, TRUE);
for (i = 0; i < n_columns; i++)
clutter_model_set_column_name (model, i, names[i]);
}
/**
* clutter_model_get_n_columns:
* @model: a #ClutterModel
*
* Retrieves the number of columns inside @model.
*
* Return value: the number of columns
*
* Since: 0.6
*/
guint
clutter_model_get_n_columns (ClutterModel *model)
{
g_return_val_if_fail (CLUTTER_IS_MODEL (model), 0);
return CLUTTER_MODEL_GET_CLASS (model)->get_n_columns (model);
}
/**
* clutter_model_appendv:
* @model: a #ClutterModel
* @n_columns: the number of columns and values
* @columns: (array length=n_columns): a vector with the columns to set
* @values: (array length=n_columns): a vector with the values
*
* Creates and appends a new row to the #ClutterModel, setting the row
* values for the given @columns upon creation.
*
* Since: 0.6
*/
void
clutter_model_appendv (ClutterModel *model,
guint n_columns,
guint *columns,
GValue *values)
{
ClutterModelPrivate *priv;
ClutterModelIter *iter;
gint i;
gboolean resort = FALSE;
g_return_if_fail (CLUTTER_IS_MODEL (model));
g_return_if_fail (n_columns <= clutter_model_get_n_columns (model));
g_return_if_fail (columns != NULL);
g_return_if_fail (values != NULL);
priv = model->priv;
iter = CLUTTER_MODEL_GET_CLASS (model)->insert_row (model, -1);
g_assert (CLUTTER_IS_MODEL_ITER (iter));
for (i = 0; i < n_columns; i++)
{
if (priv->sort_column == columns[i])
resort = TRUE;
clutter_model_iter_set_value (iter, columns[i], &values[i]);
}
g_signal_emit (model, model_signals[ROW_ADDED], 0, iter);
if (resort)
clutter_model_resort (model);
g_object_unref (iter);
}
/* forward declaration */
static void clutter_model_iter_set_internal_valist (ClutterModelIter *iter,
va_list args);
/**
* clutter_model_append:
* @model: a #ClutterModel
* @Varargs: pairs of column number and value, terminated with -1
*
* Creates and appends a new row to the #ClutterModel, setting the
* row values upon creation. For example, to append a new row where
* column 0 is type %G_TYPE_INT and column 1 is of type %G_TYPE_STRING:
*
* <informalexample><programlisting>
* ClutterModel *model;
* model = clutter_model_default_new (2,
* G_TYPE_INT, "Score",
* G_TYPE_STRING, "Team");
* clutter_model_append (model, 0, 42, 1, "Team #1", -1);
* </programlisting></informalexample>
*
* Since: 0.6
*/
void
clutter_model_append (ClutterModel *model,
...)
{
ClutterModelIter *iter;
va_list args;
g_return_if_fail (CLUTTER_IS_MODEL (model));
iter = CLUTTER_MODEL_GET_CLASS (model)->insert_row (model, -1);
g_assert (CLUTTER_IS_MODEL_ITER (iter));
/* do not emit the ::row-changed signal */
va_start (args, model);
clutter_model_iter_set_internal_valist (iter, args);
va_end (args);
g_signal_emit (model, model_signals[ROW_ADDED], 0, iter);
g_object_unref (iter);
}
/**
* clutter_model_prependv:
* @model: a #ClutterModel
* @n_columns: the number of columns and values to set
* @columns: (array length=n_columns): a vector containing the columns to set
* @values: (array length=n_columns): a vector containing the values for the cells
*
* Creates and prepends a new row to the #ClutterModel, setting the row
* values for the given @columns upon creation.
*
* Since: 0.6
*/
void
clutter_model_prependv (ClutterModel *model,
guint n_columns,
guint *columns,
GValue *values)
{
ClutterModelPrivate *priv;
ClutterModelIter *iter;
gint i;
gboolean resort = FALSE;
g_return_if_fail (CLUTTER_IS_MODEL (model));
g_return_if_fail (n_columns <= clutter_model_get_n_columns (model));
g_return_if_fail (columns != NULL);
g_return_if_fail (values != NULL);
priv = model->priv;
iter = CLUTTER_MODEL_GET_CLASS (model)->insert_row (model, 0);
g_assert (CLUTTER_IS_MODEL_ITER (iter));
for (i = 0; i < n_columns; i++)
{
if (priv->sort_column == columns[i])
resort = TRUE;
clutter_model_iter_set_value (iter, columns[i], &values[i]);
}
g_signal_emit (model, model_signals[ROW_ADDED], 0, iter);
if (resort)
clutter_model_resort (model);
g_object_unref (iter);
}
/**
* clutter_model_prepend:
* @model: a #ClutterModel
* @Varargs: pairs of column number and value, terminated with -1
*
* Creates and prepends a new row to the #ClutterModel, setting the row
* values upon creation. For example, to prepend a new row where column 0
* is type %G_TYPE_INT and column 1 is of type %G_TYPE_STRING:
*
* <informalexample><programlisting>
* ClutterModel *model;
* model = clutter_model_default_new (2,
* G_TYPE_INT, "Score",
* G_TYPE_STRING, "Team");
* clutter_model_prepend (model, 0, 42, 1, "Team #1", -1);
* </programlisting></informalexample>
*
* Since: 0.6
*/
void
clutter_model_prepend (ClutterModel *model,
...)
{
ClutterModelIter *iter;
va_list args;
g_return_if_fail (CLUTTER_IS_MODEL (model));
iter = CLUTTER_MODEL_GET_CLASS (model)->insert_row (model, 0);
g_assert (CLUTTER_IS_MODEL_ITER (iter));
va_start (args, model);
clutter_model_iter_set_internal_valist (iter, args);
va_end (args);
g_signal_emit (model, model_signals[ROW_ADDED], 0, iter);
g_object_unref (iter);
}
/**
* clutter_model_insert:
* @model: a #ClutterModel
* @row: the position to insert the new row
* @Varargs: pairs of column number and value, terminated with -1
*
* Inserts a new row to the #ClutterModel at @row, setting the row
* values upon creation. For example, to insert a new row at index 100,
* where column 0 is type %G_TYPE_INT and column 1 is of type
* %G_TYPE_STRING:
*
* <informalexample><programlisting>
* ClutterModel *model;
* model = clutter_model_default_new (2,
* G_TYPE_INT, "Score",
* G_TYPE_STRING, "Team");
* clutter_model_insert (model, 3, 0, 42, 1, "Team #1", -1);
* </programlisting></informalexample>
*
* Since: 0.6
*/
void
clutter_model_insert (ClutterModel *model,
guint row,
...)
{
ClutterModelIter *iter;
va_list args;
g_return_if_fail (CLUTTER_IS_MODEL (model));
iter = CLUTTER_MODEL_GET_CLASS (model)->insert_row (model, row);
g_assert (CLUTTER_IS_MODEL_ITER (iter));
/* set_valist() will call clutter_model_resort() if one of the
* passed columns matches the model sorting column index
*/
va_start (args, row);
clutter_model_iter_set_internal_valist (iter, args);
va_end (args);
g_signal_emit (model, model_signals[ROW_ADDED], 0, iter);
g_object_unref (iter);
}
/**
* clutter_model_insertv:
* @model: a #ClutterModel
* @row: row index
* @n_columns: the number of columns and values to set
* @columns: (array length=n_columns): a vector containing the columns to set
* @values: (array length=n_columns): a vector containing the values for the cells
*
* Inserts data at @row into the #ClutterModel, setting the row
* values for the given @columns upon creation.
*
* Since: 0.6
*/
void
clutter_model_insertv (ClutterModel *model,
guint row,
guint n_columns,
guint *columns,
GValue *values)
{
ClutterModelPrivate *priv;
ClutterModelIter *iter;
gint i;
gboolean resort = FALSE;
g_return_if_fail (CLUTTER_IS_MODEL (model));
g_return_if_fail (n_columns <= clutter_model_get_n_columns (model));
g_return_if_fail (columns != NULL);
g_return_if_fail (values != NULL);
priv = model->priv;
iter = CLUTTER_MODEL_GET_CLASS (model)->insert_row (model, row);
g_assert (CLUTTER_IS_MODEL_ITER (iter));
for (i = 0; i < n_columns; i++)
{
if (priv->sort_column == columns[i])
resort = TRUE;
clutter_model_iter_set_value (iter, columns[i], &values[i]);
}
g_signal_emit (model, model_signals[ROW_ADDED], 0, iter);
if (resort)
clutter_model_resort (model);
g_object_unref (iter);
}
/**
* clutter_model_insert_value:
* @model: a #ClutterModel
* @row: position of the row to modify
* @column: column to modify
* @value: new value for the cell
*
* Sets the data in the cell specified by @iter and @column. The type of
* @value must be convertable to the type of the column. If the row does
* not exist then it is created.
*
* Since: 0.6
*/
void
clutter_model_insert_value (ClutterModel *model,
guint row,
guint column,
const GValue *value)
{
ClutterModelPrivate *priv;
ClutterModelClass *klass;
ClutterModelIter *iter;
gboolean added = FALSE;
g_return_if_fail (CLUTTER_IS_MODEL (model));
priv = model->priv;
klass = CLUTTER_MODEL_GET_CLASS (model);
iter = klass->get_iter_at_row (model, row);
if (!iter)
{
iter = klass->insert_row (model, row);
added = TRUE;
}
g_assert (CLUTTER_IS_MODEL_ITER (iter));
clutter_model_iter_set_value (iter, column, value);
if (added)
g_signal_emit (model, model_signals[ROW_ADDED], 0, iter);
if (priv->sort_column == column)
clutter_model_resort (model);
g_object_unref (iter);
}
/**
* clutter_model_remove:
* @model: a #ClutterModel
* @row: position of row to remove
*
* Removes the row at the given position from the model.
*
* Since: 0.6
*/
void
clutter_model_remove (ClutterModel *model,
guint row)
{
ClutterModelClass *klass;
g_return_if_fail (CLUTTER_IS_MODEL (model));
klass = CLUTTER_MODEL_GET_CLASS (model);
if (klass->remove_row)
klass->remove_row (model, row);
}
/**
* clutter_model_get_column_name:
* @model: #ClutterModel
* @column: the column number
*
* Retrieves the name of the @column
*
* Return value: the name of the column. The model holds the returned
* string, and it should not be modified or freed
*
* Since: 0.6
*/
const gchar *
clutter_model_get_column_name (ClutterModel *model,
guint column)
{
ClutterModelClass *klass;
g_return_val_if_fail (CLUTTER_IS_MODEL (model), NULL);
if (column < 0 || column >= clutter_model_get_n_columns (model))
{
g_warning ("%s: Invalid column id value %d\n", G_STRLOC, column);
return NULL;
}
klass = CLUTTER_MODEL_GET_CLASS (model);
if (klass->get_column_name)
return klass->get_column_name (model, column);
return NULL;
}
/**
* clutter_model_get_column_type:
* @model: #ClutterModel
* @column: the column number
*
* Retrieves the type of the @column.
*
* Return value: the type of the column.
*
* Since: 0.6
*/
GType
clutter_model_get_column_type (ClutterModel *model,
guint column)
{
ClutterModelClass *klass;
g_return_val_if_fail (CLUTTER_IS_MODEL (model), G_TYPE_INVALID);
if (column < 0 || column >= clutter_model_get_n_columns (model))
{
g_warning ("%s: Invalid column id value %d\n", G_STRLOC, column);
return G_TYPE_INVALID;
}
klass = CLUTTER_MODEL_GET_CLASS (model);
if (klass->get_column_type)
return klass->get_column_type (model, column);
return G_TYPE_INVALID;
}
/**
* clutter_model_get_iter_at_row:
* @model: a #ClutterModel
* @row: position of the row to retrieve
*
* Retrieves a #ClutterModelIter representing the row at the given index.
*
* If a filter function has been set using clutter_model_set_filter()
* then the @model implementation will return the first non filtered
* row.
*
* Return value: (transfer full): A new #ClutterModelIter, or %NULL if @row was
* out of bounds. When done using the iterator object, call g_object_unref()
* to deallocate its resources
*
* Since: 0.6
*/
ClutterModelIter *
clutter_model_get_iter_at_row (ClutterModel *model,
guint row)
{
ClutterModelClass *klass;
g_return_val_if_fail (CLUTTER_IS_MODEL (model), NULL);
klass = CLUTTER_MODEL_GET_CLASS (model);
if (klass->get_iter_at_row)
return klass->get_iter_at_row (model, row);
return NULL;
}
/**
* clutter_model_get_first_iter:
* @model: a #ClutterModel
*
* Retrieves a #ClutterModelIter representing the first non-filtered
* row in @model.
*
* Return value: (transfer full): A new #ClutterModelIter.
* Call g_object_unref() when done using it
*
* Since: 0.6
*/
ClutterModelIter *
clutter_model_get_first_iter (ClutterModel *model)
{
ClutterModelIter *retval;
g_return_val_if_fail (CLUTTER_IS_MODEL (model), NULL);
retval = clutter_model_get_iter_at_row (model, 0);
if (retval != NULL)
{
g_assert (clutter_model_filter_iter (model, retval) != FALSE);
g_assert (clutter_model_iter_get_row (retval) == 0);
}
return retval;
}
/**
* clutter_model_get_last_iter:
* @model: a #ClutterModel
*
* Retrieves a #ClutterModelIter representing the last non-filtered
* row in @model.
*
* Return value: (transfer full): A new #ClutterModelIter.
* Call g_object_unref() when done using it
*
* Since: 0.6
*/
ClutterModelIter *
clutter_model_get_last_iter (ClutterModel *model)
{
ClutterModelIter *retval;
guint length;
g_return_val_if_fail (CLUTTER_IS_MODEL (model), NULL);
length = clutter_model_get_n_rows (model);
retval = clutter_model_get_iter_at_row (model, length - 1);
if (retval != NULL)
g_assert (clutter_model_filter_iter (model, retval) != FALSE);
return retval;
}
/**
* clutter_model_get_n_rows:
* @model: a #ClutterModel
*
* Retrieves the number of rows inside @model, eventually taking
* into account any filtering function set using clutter_model_set_filter().
*
* Return value: The length of the @model. If there is a filter set, then
* the length of the filtered @model is returned.
*
* Since: 0.6
*/
guint
clutter_model_get_n_rows (ClutterModel *model)
{
g_return_val_if_fail (CLUTTER_IS_MODEL (model), 0);
return CLUTTER_MODEL_GET_CLASS (model)->get_n_rows (model);
}
/**
* clutter_model_set_sorting_column:
* @model: a #ClutterModel
* @column: the column of the @model to sort, or -1
*
* Sets the model to sort by @column. If @column is a negative value
* the sorting column will be unset.
*
* Since: 0.6
*/
void
clutter_model_set_sorting_column (ClutterModel *model,
gint column)
{
ClutterModelPrivate *priv;
g_return_if_fail (CLUTTER_IS_MODEL (model));
priv = model->priv;
/* The extra comparison for >= 0 is because column gets promoted to
unsigned in the second comparison */
if (column >= 0 && column >= clutter_model_get_n_columns (model))
{
g_warning ("%s: Invalid column id value %d\n", G_STRLOC, column);
return;
}
priv->sort_column = column;
if (priv->sort_column >= 0)
clutter_model_resort (model);
g_signal_emit (model, model_signals[SORT_CHANGED], 0);
}
/**
* clutter_model_get_sorting_column:
* @model: a #ClutterModel
*
* Retrieves the number of column used for sorting the @model.
*
* Return value: a column number, or -1 if the model is not sorted
*
* Since: 0.6
*/
gint
clutter_model_get_sorting_column (ClutterModel *model)
{
g_return_val_if_fail (CLUTTER_IS_MODEL (model), -1);
return model->priv->sort_column;
}
/**
* clutter_model_foreach:
* @model: a #ClutterModel
* @func: (scope call): a #ClutterModelForeachFunc
* @user_data: user data to pass to @func
*
* Calls @func for each row in the model.
*
* Since: 0.6
*/
void
clutter_model_foreach (ClutterModel *model,
ClutterModelForeachFunc func,
gpointer user_data)
{
ClutterModelIter *iter;
g_return_if_fail (CLUTTER_IS_MODEL (model));
iter = clutter_model_get_first_iter (model);
if (!iter)
return;
while (!clutter_model_iter_is_last (iter))
{
if (clutter_model_filter_iter (model, iter))
{
if (!func (model, iter, user_data))
break;
}
iter = clutter_model_iter_next (iter);
}
g_object_unref (iter);
}
/**
* clutter_model_set_sort:
* @model: a #ClutterModel
* @column: the column to sort on
* @func: (allow-none): a #ClutterModelSortFunc, or #NULL
* @user_data: user data to pass to @func, or #NULL
* @notify: destroy notifier of @user_data, or #NULL
*
* Sorts @model using the given sorting function.
*
* Since: 0.6
*/
void
clutter_model_set_sort (ClutterModel *model,
gint column,
ClutterModelSortFunc func,
gpointer user_data,
GDestroyNotify notify)
{
ClutterModelPrivate *priv;
g_return_if_fail (CLUTTER_IS_MODEL (model));
g_return_if_fail ((func != NULL && column >= 0) ||
(func == NULL && column == -1));
priv = model->priv;
if (priv->sort_notify)
priv->sort_notify (priv->sort_data);
priv->sort_func = func;
priv->sort_data = user_data;
priv->sort_notify = notify;
/* This takes care of calling _model_sort & emitting the signal*/
clutter_model_set_sorting_column (model, column);
}
/**
* clutter_model_set_filter:
* @model: a #ClutterModel
* @func: (allow-none): a #ClutterModelFilterFunc, or #NULL
* @user_data: user data to pass to @func, or #NULL
* @notify: destroy notifier of @user_data, or #NULL
*
* Filters the @model using the given filtering function.
*
* Since: 0.6
*/
void
clutter_model_set_filter (ClutterModel *model,
ClutterModelFilterFunc func,
gpointer user_data,
GDestroyNotify notify)
{
ClutterModelPrivate *priv;
g_return_if_fail (CLUTTER_IS_MODEL (model));
priv = model->priv;
if (priv->filter_notify)
priv->filter_notify (priv->filter_data);
priv->filter_func = func;
priv->filter_data = user_data;
priv->filter_notify = notify;
g_signal_emit (model, model_signals[FILTER_CHANGED], 0);
g_object_notify (G_OBJECT (model), "filter-set");
}
/**
* clutter_model_get_filter_set:
* @model: a #ClutterModel
*
* Returns whether the @model has a filter in place, set
* using clutter_model_set_filter()
*
* Return value: %TRUE if a filter is set
*
* Since: 1.0
*/
gboolean
clutter_model_get_filter_set (ClutterModel *model)
{
g_return_val_if_fail (CLUTTER_IS_MODEL (model), FALSE);
return model->priv->filter_func != NULL;
}
/*
* ClutterModelIter Object
*/
/**
* SECTION:clutter-model-iter
* @short_description: Iterates through a model
*
* #ClutterModelIter is an object used for iterating through all the rows
* of a #ClutterModel. It allows setting and getting values on the row
* which is currently pointing at.
*
* A #ClutterModelIter represents a position between two elements
* of the sequence. For example, the iterator returned by
* clutter_model_get_first_iter() represents the gap immediately before
* the first row of the #ClutterModel, and the iterator returned by
* clutter_model_get_last_iter() represents the gap immediately after the
* last row.
*
* A #ClutterModelIter can only be created by a #ClutterModel implementation
* and it is valid as long as the model does not change.
*
* #ClutterModelIter is available since Clutter 0.6
*/
G_DEFINE_ABSTRACT_TYPE (ClutterModelIter, clutter_model_iter, G_TYPE_OBJECT);
#define CLUTTER_MODEL_ITER_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), \
CLUTTER_TYPE_MODEL_ITER, ClutterModelIterPrivate))
struct _ClutterModelIterPrivate
{
ClutterModel *model;
gint row;
guint ignore_sort : 1;
};
enum
{
ITER_PROP_0,
ITER_PROP_MODEL,
ITER_PROP_ROW
};
static ClutterModel *
clutter_model_iter_real_get_model (ClutterModelIter *iter)
{
return iter->priv->model;
}
static guint
clutter_model_iter_real_get_row (ClutterModelIter *iter)
{
return iter->priv->row;
}
/* private function */
void
clutter_model_iter_set_row (ClutterModelIter *iter,
guint row)
{
iter->priv->row = row;
}
static void
clutter_model_iter_get_value_unimplemented (ClutterModelIter *iter,
guint column,
GValue *value)
{
g_warning ("%s: Iterator of type '%s' does not implement the "
"ClutterModelIter::get_value() virtual function",
G_STRLOC,
g_type_name (G_OBJECT_TYPE (iter)));
}
static void
clutter_model_iter_set_value_unimplemented (ClutterModelIter *iter,
guint column,
const GValue *value)
{
g_warning ("%s: Iterator of type '%s' does not implement the "
"ClutterModelIter::set_value() virtual function",
G_STRLOC,
g_type_name (G_OBJECT_TYPE (iter)));
}
static gboolean
clutter_model_iter_is_first_unimplemented (ClutterModelIter *iter)
{
g_warning ("%s: Iterator of type '%s' does not implement the "
"ClutterModelIter::is_first() virtual function",
G_STRLOC,
g_type_name (G_OBJECT_TYPE (iter)));
return FALSE;
}
static gboolean
clutter_model_iter_is_last_unimplemented (ClutterModelIter *iter)
{
g_warning ("%s: Iterator of type '%s' does not implement the "
"ClutterModelIter::is_last() virtual function",
G_STRLOC,
g_type_name (G_OBJECT_TYPE (iter)));
return FALSE;
}
static ClutterModelIter *
clutter_model_iter_next_unimplemented (ClutterModelIter *iter)
{
g_warning ("%s: Iterator of type '%s' does not implement the "
"ClutterModelIter::next() virtual function",
G_STRLOC,
g_type_name (G_OBJECT_TYPE (iter)));
return NULL;
}
static ClutterModelIter *
clutter_model_iter_prev_unimplemented (ClutterModelIter *iter)
{
g_warning ("%s: Iterator of type '%s' does not implement the "
"ClutterModelIter::prev() virtual function",
G_STRLOC,
g_type_name (G_OBJECT_TYPE (iter)));
return NULL;
}
static ClutterModelIter *
clutter_model_iter_copy_unimplemented (ClutterModelIter *iter)
{
g_warning ("%s: Iterator of type '%s' does not implement the "
"ClutterModelIter::copy() virtual function",
G_STRLOC,
g_type_name (G_OBJECT_TYPE (iter)));
return NULL;
}
static void
clutter_model_iter_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ClutterModelIter *iter = CLUTTER_MODEL_ITER (object);
ClutterModelIterPrivate *priv = iter->priv;
switch (prop_id)
{
case ITER_PROP_MODEL:
g_value_set_object (value, priv->model);
break;
case ITER_PROP_ROW:
g_value_set_uint (value, priv->row);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
clutter_model_iter_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
ClutterModelIter *iter = CLUTTER_MODEL_ITER (object);
ClutterModelIterPrivate *priv = iter->priv;
switch (prop_id)
{
case ITER_PROP_MODEL:
priv->model = g_value_get_object (value);
break;
case ITER_PROP_ROW:
priv->row = g_value_get_uint (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
clutter_model_iter_class_init (ClutterModelIterClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GParamSpec *pspec;
gobject_class->get_property = clutter_model_iter_get_property;
gobject_class->set_property = clutter_model_iter_set_property;
klass->get_model = clutter_model_iter_real_get_model;
klass->get_row = clutter_model_iter_real_get_row;
klass->is_first = clutter_model_iter_is_first_unimplemented;
klass->is_last = clutter_model_iter_is_last_unimplemented;
klass->next = clutter_model_iter_next_unimplemented;
klass->prev = clutter_model_iter_prev_unimplemented;
klass->get_value = clutter_model_iter_get_value_unimplemented;
klass->set_value = clutter_model_iter_set_value_unimplemented;
klass->copy = clutter_model_iter_copy_unimplemented;
/* Properties */
/**
* ClutterModelIter:model:
*
* A reference to the #ClutterModel that this iter belongs to.
*
* Since: 0.6
*/
pspec = g_param_spec_object ("model",
"Model",
"The model to which the iterator belongs to",
CLUTTER_TYPE_MODEL,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, ITER_PROP_MODEL, pspec);
/**
* ClutterModelIter:row:
*
* The row number to which this iter points to.
*
* Since: 0.6
*/
pspec = g_param_spec_uint ("row",
"Row",
"The row to which the iterator points to",
0, G_MAXUINT, 0,
CLUTTER_PARAM_READWRITE);
g_object_class_install_property (gobject_class, ITER_PROP_ROW, pspec);
g_type_class_add_private (gobject_class, sizeof (ClutterModelIterPrivate));
}
static void
clutter_model_iter_init (ClutterModelIter *self)
{
ClutterModelIterPrivate *priv;
self->priv = priv = CLUTTER_MODEL_ITER_GET_PRIVATE (self);
priv->model = NULL;
priv->row = 0;
priv->ignore_sort = FALSE;
}
/*
* Public functions
*/
static void
clutter_model_iter_set_internal_valist (ClutterModelIter *iter,
va_list args)
{
ClutterModel *model;
ClutterModelIterPrivate *priv;
guint column = 0;
gboolean sort = FALSE;
priv = iter->priv;
model = priv->model;
g_assert (CLUTTER_IS_MODEL (model));
column = va_arg (args, gint);
/* Don't want to sort while setting lots of fields, leave that till the end
*/
priv->ignore_sort = TRUE;
while (column != -1)
{
GValue value = { 0, };
gchar *error = NULL;
if (column < 0 || column >= clutter_model_get_n_columns (model))
{
g_warning ("%s: Invalid column number %d added to iter "
"(remember to end you list of columns with a -1)",
G_STRLOC, column);
break;
}
g_value_init (&value, clutter_model_get_column_type (model, column));
G_VALUE_COLLECT (&value, args, 0, &error);
if (error)
{
g_warning ("%s: %s", G_STRLOC, error);
g_free (error);
/* Leak value as it might not be in a sane state */
break;
}
clutter_model_iter_set_value (iter, column, &value);
g_value_unset (&value);
if (column == clutter_model_get_sorting_column (model))
sort = TRUE;
column = va_arg (args, gint);
}
priv->ignore_sort = FALSE;
if (sort)
clutter_model_resort (model);
}
/**
* clutter_model_iter_set_valist:
* @iter: a #ClutterModelIter
* @args: va_list of column/value pairs, terminiated by -1
*
* See clutter_model_iter_set(); this version takes a va_list for language
* bindings.
*
* Since: 0.6
*/
void
clutter_model_iter_set_valist (ClutterModelIter *iter,
va_list args)
{
ClutterModelIterPrivate *priv;
ClutterModel *model;
g_return_if_fail (CLUTTER_IS_MODEL_ITER (iter));
clutter_model_iter_set_internal_valist (iter, args);
priv = iter->priv;
model = priv->model;
g_assert (CLUTTER_IS_MODEL (model));
g_signal_emit (model, model_signals[ROW_CHANGED], 0, iter);
}
/**
* clutter_model_iter_get:
* @iter: a #ClutterModelIter
* @Varargs: a list of column/return location pairs, terminated by -1
*
* Gets the value of one or more cells in the row referenced by @iter. The
* variable argument list should contain integer column numbers, each column
* column number followed by a place to store the value being retrieved. The
* list is terminated by a -1.
*
* For example, to get a value from column 0 with type %G_TYPE_STRING use:
* <informalexample><programlisting>
* clutter_model_iter_get (iter, 0, &place_string_here, -1);
* </programlisting></informalexample>
*
* where place_string_here is a gchar* to be filled with the string. If
* appropriate, the returned values have to be freed or unreferenced.
*
* Since: 0.6
*/
void
clutter_model_iter_get (ClutterModelIter *iter,
...)
{
va_list args;
g_return_if_fail (CLUTTER_IS_MODEL_ITER (iter));
va_start (args, iter);
clutter_model_iter_get_valist (iter, args);
va_end (args);
}
/**
* clutter_model_iter_get_value:
* @iter: a #ClutterModelIter
* @column: column number to retrieve the value from
* @value: (out): an empty #GValue to set
*
* Sets an initializes @value to that at @column. When done with @value,
* g_value_unset() needs to be called to free any allocated memory.
*
* Since: 0.6
*/
void
clutter_model_iter_get_value (ClutterModelIter *iter,
guint column,
GValue *value)
{
ClutterModelIterClass *klass;
ClutterModel *model;
g_return_if_fail (CLUTTER_IS_MODEL_ITER (iter));
model = iter->priv->model;
g_value_init (value, clutter_model_get_column_type (model, column));
klass = CLUTTER_MODEL_ITER_GET_CLASS (iter);
if (klass && klass->get_value)
klass->get_value (iter, column, value);
}
/**
* clutter_model_iter_get_valist:
* @iter: a #ClutterModelIter
* @args: a list of column/return location pairs, terminated by -1
*
* See clutter_model_iter_get(). This version takes a va_list for language
* bindings.
*
* Since: 0.6
*/
void
clutter_model_iter_get_valist (ClutterModelIter *iter,
va_list args)
{
ClutterModelIterPrivate *priv;
ClutterModel *model;
guint column = 0;
g_return_if_fail (CLUTTER_IS_MODEL_ITER (iter));
priv = iter->priv;
model = priv->model;
g_assert (CLUTTER_IS_MODEL (model));
column = va_arg (args, gint);
while (column != -1)
{
GValue value = { 0, };
gchar *error = NULL;
if (column < 0 || column >= clutter_model_get_n_columns (model))
{
g_warning ("%s: Invalid column number %d added to iter "
"(remember to end you list of columns with a -1)",
G_STRLOC, column);
break;
}
/* this one will take care of initialising value to the
* correct type
*/
clutter_model_iter_get_value (iter, column, &value);
G_VALUE_LCOPY (&value, args, 0, &error);
if (error)
{
g_warning ("%s: %s", G_STRLOC, error);
g_free (error);
/* Leak value as it might not be in a sane state */
break;
}
g_value_unset (&value);
column = va_arg (args, gint);
}
}
/**
* clutter_model_iter_set:
* @iter: a #ClutterModelIter
* @Varargs: a list of column/return location pairs, terminated by -1
*
* Sets the value of one or more cells in the row referenced by @iter. The
* variable argument list should contain integer column numbers, each column
* column number followed by the value to be set. The list is terminated by a
* -1.
*
* For example, to set column 0 with type %G_TYPE_STRING, use:
* <informalexample><programlisting>
* clutter_model_iter_set (iter, 0, "foo", -1);
* </programlisting></informalexample>
*
* Since: 0.6
*/
void
clutter_model_iter_set (ClutterModelIter *iter,
...)
{
va_list args;
g_return_if_fail (CLUTTER_IS_MODEL_ITER (iter));
va_start (args, iter);
clutter_model_iter_set_valist (iter, args);
va_end (args);
}
/**
* clutter_model_iter_set_value:
* @iter: a #ClutterModelIter
* @column: column number to retrieve the value from
* @value: new value for the cell
*
* Sets the data in the cell specified by @iter and @column. The type of
* @value must be convertable to the type of the column.
*
* Since: 0.6
*/
void
clutter_model_iter_set_value (ClutterModelIter *iter,
guint column,
const GValue *value)
{
ClutterModelIterClass *klass;
g_return_if_fail (CLUTTER_IS_MODEL_ITER (iter));
klass = CLUTTER_MODEL_ITER_GET_CLASS (iter);
if (klass && klass->set_value)
klass->set_value (iter, column, value);
}
/**
* clutter_model_iter_is_first:
* @iter: a #ClutterModelIter
*
* Gets whether the current iterator is at the beginning of the model
* to which it belongs.
*
* Return value: #TRUE if @iter is the first iter in the filtered model
*
* Since: 0.6
*/
gboolean
clutter_model_iter_is_first (ClutterModelIter *iter)
{
ClutterModelIterClass *klass;
g_return_val_if_fail (CLUTTER_IS_MODEL_ITER (iter), FALSE);
klass = CLUTTER_MODEL_ITER_GET_CLASS (iter);
if (klass && klass->is_first)
return klass->is_first (iter);
return FALSE;
}
/**
* clutter_model_iter_is_last:
* @iter: a #ClutterModelIter
*
* Gets whether the iterator is at the end of the model to which it
* belongs.
*
* Return value: #TRUE if @iter is the last iter in the filtered model.
*
* Since: 0.6
*/
gboolean
clutter_model_iter_is_last (ClutterModelIter *iter)
{
ClutterModelIterClass *klass;
g_return_val_if_fail (CLUTTER_IS_MODEL_ITER (iter), FALSE);
klass = CLUTTER_MODEL_ITER_GET_CLASS (iter);
if (klass && klass->is_last)
return klass->is_last (iter);
return FALSE;
}
/**
* clutter_model_iter_next:
* @iter: a #ClutterModelIter
*
* Updates the @iter to point at the next position in the model.
* The model implementation should take into account the presence of
* a filter function.
*
* Return value: (transfer none): The passed iterator, updated to point at the next
* row in the model.
*
* Since: 0.6
*/
ClutterModelIter *
clutter_model_iter_next (ClutterModelIter *iter)
{
ClutterModelIterClass *klass;
g_return_val_if_fail (CLUTTER_IS_MODEL_ITER (iter), NULL);
klass = CLUTTER_MODEL_ITER_GET_CLASS (iter);
if (klass && klass->next)
return klass->next (iter);
return NULL;
}
/**
* clutter_model_iter_prev:
* @iter: a #ClutterModelIter
*
* Sets the @iter to point at the previous position in the model.
* The model implementation should take into account the presence of
* a filter function.
*
* Return value: (transfer none): The passed iterator, updated to point at the previous
* row in the model.
*
* Since: 0.6
*/
ClutterModelIter *
clutter_model_iter_prev (ClutterModelIter *iter)
{
ClutterModelIterClass *klass;
g_return_val_if_fail (CLUTTER_IS_MODEL_ITER (iter), NULL);
klass = CLUTTER_MODEL_ITER_GET_CLASS (iter);
if (klass && klass->prev)
return klass->prev (iter);
return NULL;
}
/**
* clutter_model_iter_get_model:
* @iter: a #ClutterModelIter
*
* Retrieves a pointer to the #ClutterModel that this iter is part of.
*
* Return value: (transfer none): a pointer to a #ClutterModel.
*
* Since: 0.6
*/
ClutterModel *
clutter_model_iter_get_model (ClutterModelIter *iter)
{
ClutterModelIterClass *klass;
g_return_val_if_fail (CLUTTER_IS_MODEL_ITER (iter), NULL);
klass = CLUTTER_MODEL_ITER_GET_CLASS (iter);
if (klass && klass->get_model)
return klass->get_model (iter);
return NULL;
}
/**
* clutter_model_iter_get_row:
* @iter: a #ClutterModelIter
*
* Retrieves the position of the row that the @iter points to.
*
* Return value: the position of the @iter in the model
*
* Since: 0.6
*/
guint
clutter_model_iter_get_row (ClutterModelIter *iter)
{
ClutterModelIterClass *klass;
g_return_val_if_fail (CLUTTER_IS_MODEL_ITER (iter), 0);
klass = CLUTTER_MODEL_ITER_GET_CLASS (iter);
if (klass && klass->get_row)
return klass->get_row (iter);
return 0;
}
/**
* clutter_model_iter_copy:
* @iter: a #ClutterModelIter
*
* Copies the passed iterator.
*
* Return value: (transfer full): a copy of the iterator, or %NULL
*
* Since: 0.8
*/
ClutterModelIter *
clutter_model_iter_copy (ClutterModelIter *iter)
{
ClutterModelIterClass *klass;
g_return_val_if_fail (CLUTTER_IS_MODEL_ITER (iter), NULL);
klass = CLUTTER_MODEL_ITER_GET_CLASS (iter);
if (klass->copy)
return klass->copy (iter);
return NULL;
}
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