/*
* Copyright © 2020 Red Hat , Inc .
*
* 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 : Matthias Clasen < mclasen @ redhat . com >
*/
#include "config.h"
#include "gtkstringlist.h"
#include "gtkbuildable.h"
#include "gtkbuilderprivate.h"
#include "gtkprivate.h"
/**
* GtkStringList :
*
* A list model that wraps an array of strings .
*
* The objects in the model are of type [ class @ Gtk . StringObject ] and have
* a " string " property that can be used inside expressions .
*
* ` GtkStringList ` is well - suited for any place where you would
* typically use a ` char * [ ] ` , but need a list model .
*
* # # GtkStringList as GtkBuildable
*
* The ` GtkStringList ` implementation of the ` GtkBuildable ` interface
* supports adding items directly using the ` < items > ` element and
* specifying ` < item > ` elements for each item . Each ` < item > ` element
* supports the regular translation attributes “ translatable ” ,
* “ context ” and “ comments ” .
*
* Here is a UI definition fragment specifying a ` GtkStringList `
*
* ` ` ` xml
* < object class = " GtkStringList " >
* < items >
* < item translatable = " yes " > Factory < / item >
* < item translatable = " yes " > Home < / item >
* < item translatable = " yes " > Subway < / item >
* < / items >
* < / object >
* ` ` `
*/
/* {{{ GtkStringObject */
/**
* GtkStringObject :
*
* The type of items in a ` GtkStringList ` .
*
* A ` GtkStringObject ` is a wrapper around a ` const char * ` ; it has
* a [ property @ Gtk . StringObject : string ] property that can be used
* for property bindings and expressions .
*/
#define GDK_ARRAY_ELEMENT_TYPE GtkStringObject *
#define GDK_ARRAY_NAME objects
#define GDK_ARRAY_TYPE_NAME Objects
#define GDK_ARRAY_FREE_FUNC g_object_unref
#include "gdk/gdkarrayimpl.c"
struct _GtkStringObject
{
GObject parent_instance;
char *string;
};
enum {
PROP_STRING = 1 ,
PROP_NUM_PROPERTIES
};
static GParamSpec *props[PROP_NUM_PROPERTIES] = { NULL, };
G_DEFINE_TYPE (GtkStringObject, gtk_string_object, G_TYPE_OBJECT);
static void
gtk_string_object_init (GtkStringObject *object)
{
}
static void
gtk_string_object_finalize (GObject *object)
{
GtkStringObject *self = GTK_STRING_OBJECT (object);
g_free (self->string);
G_OBJECT_CLASS (gtk_string_object_parent_class)->finalize (object);
}
static void
gtk_string_object_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkStringObject *self = GTK_STRING_OBJECT (object);
switch (property_id)
{
case PROP_STRING:
g_value_set_string (value, self->string);
break ;
default :
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break ;
}
}
static void
gtk_string_object_class_init (GtkStringObjectClass *class )
{
GObjectClass *object_class = G_OBJECT_CLASS (class );
object_class->finalize = gtk_string_object_finalize;
object_class->get_property = gtk_string_object_get_property;
/**
* GtkStringObject : string :
*
* The string .
*/
props[PROP_STRING] = g_param_spec_string ("string" , NULL, NULL,
NULL,
G_PARAM_READABLE |
G_PARAM_STATIC_NAME);
g_object_class_install_properties (object_class, PROP_NUM_PROPERTIES, props);
}
static GtkStringObject *
gtk_string_object_new_take (char *string)
{
GtkStringObject *obj;
obj = g_object_new (GTK_TYPE_STRING_OBJECT, NULL);
obj->string = string;
return obj;
}
/**
* gtk_string_object_new :
* @ string : ( not nullable ) : The string to wrap
*
* Wraps a string in an object for use with ` GListModel ` .
*
* Returns : a new ` GtkStringObject `
*/
GtkStringObject *
gtk_string_object_new (const char *string)
{
return gtk_string_object_new_take (g_strdup (string));
}
/**
* gtk_string_object_get_string :
* @ self : a ` GtkStringObject `
*
* Returns the string contained in a ` GtkStringObject ` .
*
* Returns : the string of @ self
*/
const char *
gtk_string_object_get_string (GtkStringObject *self)
{
g_return_val_if_fail (GTK_IS_STRING_OBJECT (self), NULL);
return self->string;
}
/* }}} */
/* {{{ List model implementation */
struct _GtkStringList
{
GObject parent_instance;
Objects items;
};
struct _GtkStringListClass
{
GObjectClass parent_class;
};
static GType
gtk_string_list_get_item_type (GListModel *list)
{
return G_TYPE_OBJECT;
}
static guint
gtk_string_list_get_n_items (GListModel *list)
{
GtkStringList *self = GTK_STRING_LIST (list);
return objects_get_size (&self->items);
}
static gpointer
gtk_string_list_get_item (GListModel *list,
guint position)
{
GtkStringList *self = GTK_STRING_LIST (list);
if (position >= objects_get_size (&self->items))
return NULL;
return g_object_ref (objects_get (&self->items, position));
}
static void
gtk_string_list_model_init (GListModelInterface *iface)
{
iface->get_item_type = gtk_string_list_get_item_type;
iface->get_n_items = gtk_string_list_get_n_items;
iface->get_item = gtk_string_list_get_item;
}
/* }}} */
/* {{{ Buildable implementation */
typedef struct
{
GtkBuilder *builder;
GtkStringList *list;
GString *string;
const char *domain;
char *context;
guint translatable : 1 ;
guint is_text : 1 ;
} ItemParserData;
static void
item_start_element (GtkBuildableParseContext *context,
const char *element_name,
const char **names,
const char **values,
gpointer user_data,
GError **error)
{
ItemParserData *data = (ItemParserData*)user_data;
if (strcmp (element_name, "items" ) == 0 )
{
if (!_gtk_builder_check_parent (data->builder, context, "object" , error))
return ;
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_INVALID, NULL, NULL,
G_MARKUP_COLLECT_INVALID))
_gtk_builder_prefix_error (data->builder, context, error);
}
else if (strcmp (element_name, "item" ) == 0 )
{
gboolean translatable = FALSE ;
const char *msg_context = NULL;
if (!_gtk_builder_check_parent (data->builder, context, "items" , error))
return ;
if (!g_markup_collect_attributes (element_name, names, values, error,
G_MARKUP_COLLECT_BOOLEAN|G_MARKUP_COLLECT_OPTIONAL, "translatable" , &translatable,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "comments" , NULL,
G_MARKUP_COLLECT_STRING|G_MARKUP_COLLECT_OPTIONAL, "context" , &msg_context,
G_MARKUP_COLLECT_INVALID))
{
_gtk_builder_prefix_error (data->builder, context, error);
return ;
}
data->is_text = TRUE ;
data->translatable = translatable;
data->context = g_strdup (msg_context);
}
else
{
_gtk_builder_error_unhandled_tag (data->builder, context,
"GtkStringList" , element_name,
error);
}
}
static void
item_text (GtkBuildableParseContext *context,
const char *text,
gsize text_len,
gpointer user_data,
GError **error)
{
ItemParserData *data = (ItemParserData*)user_data;
if (data->is_text)
g_string_append_len (data->string, text, text_len);
}
static void
item_end_element (GtkBuildableParseContext *context,
const char *element_name,
gpointer user_data,
GError **error)
{
ItemParserData *data = (ItemParserData*)user_data;
/* Append the translated strings */
if (data->string->len)
{
if (data->translatable)
{
const char *translated;
translated = _gtk_builder_parser_translate (data->domain,
data->context,
data->string->str);
g_string_assign (data->string, translated);
}
gtk_string_list_append (data->list, data->string->str);
}
data->translatable = FALSE ;
g_string_set_size (data->string, 0 );
g_clear_pointer (&data->context, g_free);
data->is_text = FALSE ;
}
static const GtkBuildableParser item_parser =
{
item_start_element,
item_end_element,
item_text
};
static gboolean
gtk_string_list_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *tagname,
GtkBuildableParser *parser,
gpointer *parser_data)
{
if (strcmp (tagname, "items" ) == 0 )
{
ItemParserData *data;
gtk_buildable_tag_deprecation_warning (buildable, builder, "items" , "strings" );
data = g_new0 (ItemParserData, 1 );
data->builder = g_object_ref (builder);
data->list = g_object_ref (GTK_STRING_LIST (buildable));
data->domain = gtk_builder_get_translation_domain (builder);
data->string = g_string_new ("" );
*parser = item_parser;
*parser_data = data;
return TRUE ;
}
return FALSE ;
}
static void
gtk_string_list_buildable_custom_finished (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const char *tagname,
gpointer user_data)
{
if (strcmp (tagname, "items" ) == 0 )
{
ItemParserData *data;
data = (ItemParserData*)user_data;
g_object_unref (data->list);
g_object_unref (data->builder);
g_string_free (data->string, TRUE );
g_free (data);
}
}
static void
gtk_string_list_buildable_init (GtkBuildableIface *iface)
{
iface->custom_tag_start = gtk_string_list_buildable_custom_tag_start;
iface->custom_finished = gtk_string_list_buildable_custom_finished;
}
/* }}} */
/* {{{ GObject implementation */
enum {
PROP_0,
PROP_ITEM_TYPE,
PROP_N_ITEMS,
PROP_STRINGS,
N_PROPS
};
static GParamSpec *properties[N_PROPS] = { NULL, };
G_DEFINE_TYPE_WITH_CODE (GtkStringList, gtk_string_list, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_string_list_buildable_init)
G_IMPLEMENT_INTERFACE (G_TYPE_LIST_MODEL,
gtk_string_list_model_init))
static void
gtk_string_list_dispose (GObject *object)
{
GtkStringList *self = GTK_STRING_LIST (object);
objects_clear (&self->items);
G_OBJECT_CLASS (gtk_string_list_parent_class)->dispose (object);
}
static void
gtk_string_list_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkStringList *self = GTK_STRING_LIST (object);
switch (prop_id)
{
case PROP_ITEM_TYPE:
g_value_set_gtype (value, gtk_string_list_get_item_type (G_LIST_MODEL (self)));
break ;
case PROP_N_ITEMS:
g_value_set_uint (value, gtk_string_list_get_n_items (G_LIST_MODEL (self)));
break ;
default :
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break ;
}
}
static void
gtk_string_list_set_property (GObject *object,
unsigned int prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkStringList *self = GTK_STRING_LIST (object);
switch (prop_id)
{
case PROP_STRINGS:
gtk_string_list_splice (self, 0 , 0 ,
(const char * const *) g_value_get_boxed (value));
break ;
default :
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break ;
}
}
static void
gtk_string_list_class_init (GtkStringListClass *class )
{
GObjectClass *gobject_class = G_OBJECT_CLASS (class );
gobject_class->dispose = gtk_string_list_dispose;
gobject_class->get_property = gtk_string_list_get_property;
gobject_class->set_property = gtk_string_list_set_property;
/**
* GtkStringList : item - type :
*
* The type of items . See [ method @ Gio . ListModel . get_item_type ] .
*
* Since : 4 . 14
**/
properties[PROP_ITEM_TYPE] =
g_param_spec_gtype ("item-type" , NULL, NULL,
G_TYPE_OBJECT,
G_PARAM_READABLE | G_PARAM_STATIC_NAME);
/**
* GtkStringList : n - items :
*
* The number of items . See [ method @ Gio . ListModel . get_n_items ] .
*
* Since : 4 . 14
**/
properties[PROP_N_ITEMS] =
g_param_spec_uint ("n-items" , NULL, NULL,
0 , G_MAXUINT, 0 ,
G_PARAM_READABLE | G_PARAM_STATIC_NAME);
/**
* GtkStringList : strings :
*
* The strings in the model .
*
* Since : 4 . 10
*/
properties[PROP_STRINGS] =
g_param_spec_boxed ("strings" , NULL, NULL,
G_TYPE_STRV,
G_PARAM_WRITABLE | G_PARAM_STATIC_NAME | G_PARAM_CONSTRUCT_ONLY);
g_object_class_install_properties (gobject_class, N_PROPS, properties);
}
static void
gtk_string_list_init (GtkStringList *self)
{
objects_init (&self->items);
}
/* }}} */
/* {{{ Public API */
/**
* gtk_string_list_new :
* @ strings : ( array zero - terminated = 1 ) ( nullable ) : The strings to put in the model
*
* Creates a new ` GtkStringList ` with the given @ strings .
*
* Returns : a new ` GtkStringList `
*/
GtkStringList *
gtk_string_list_new (const char * const *strings)
{
return g_object_new (GTK_TYPE_STRING_LIST,
"strings" , strings,
NULL);
}
/**
* gtk_string_list_splice :
* @ self : a ` GtkStringList `
* @ position : the position at which to make the change
* @ n_removals : the number of strings to remove
* @ additions : ( array zero - terminated = 1 ) ( nullable ) : The strings to add
*
* Changes @ self by removing @ n_removals strings and adding @ additions
* to it .
*
* This function is more efficient than [ method @ Gtk . StringList . append ]
* and [ method @ Gtk . StringList . remove ] , because it only emits the
* : : items - changed signal once for the change .
*
* This function copies the strings in @ additions .
*
* The parameters @ position and @ n_removals must be correct ( ie :
* @ position + @ n_removals must be less than or equal to the length
* of the list at the time this function is called ) .
*/
void
gtk_string_list_splice (GtkStringList *self,
guint position,
guint n_removals,
const char * const *additions)
{
guint i, n_additions;
g_return_if_fail (GTK_IS_STRING_LIST (self));
g_return_if_fail (position + n_removals >= position); /* overflow */
g_return_if_fail (position + n_removals <= objects_get_size (&self->items));
if (additions)
n_additions = g_strv_length ((char **) additions);
else
n_additions = 0 ;
objects_splice (&self->items, position, n_removals, FALSE , NULL, n_additions);
for (i = 0 ; i < n_additions; i++)
{
*objects_index (&self->items, position + i) = gtk_string_object_new (additions[i]);
}
if (n_removals || n_additions)
g_list_model_items_changed (G_LIST_MODEL (self), position, n_removals, n_additions);
if (n_removals != n_additions)
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_N_ITEMS]);
}
/**
* gtk_string_list_append :
* @ self : a ` GtkStringList `
* @ string : the string to insert
*
* Appends @ string to @ self .
*
* The @ string will be copied . See
* [ method @ Gtk . StringList . take ] for a way to avoid that .
*/
void
gtk_string_list_append (GtkStringList *self,
const char *string)
{
g_return_if_fail (GTK_IS_STRING_LIST (self));
objects_append (&self->items, gtk_string_object_new (string));
g_list_model_items_changed (G_LIST_MODEL (self), objects_get_size (&self->items) - 1 , 0 , 1 );
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_N_ITEMS]);
}
/**
* gtk_string_list_take :
* @ self : a ` GtkStringList `
* @ string : ( transfer full ) : the string to insert
*
* Adds @ string to self at the end , and takes
* ownership of it .
*
* This variant of [ method @ Gtk . StringList . append ]
* is convenient for formatting strings :
*
* ` ` ` c
* gtk_string_list_take ( self , g_strdup_print ( " % d dollars " , lots ) ) ;
* ` ` `
*/
void
gtk_string_list_take (GtkStringList *self,
char *string)
{
g_return_if_fail (GTK_IS_STRING_LIST (self));
objects_append (&self->items, gtk_string_object_new_take (string));
g_list_model_items_changed (G_LIST_MODEL (self), objects_get_size (&self->items) - 1 , 0 , 1 );
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_N_ITEMS]);
}
/**
* gtk_string_list_remove :
* @ self : a ` GtkStringList `
* @ position : the position of the string that is to be removed
*
* Removes the string at @ position from @ self .
*
* @ position must be smaller than the current
* length of the list .
*/
void
gtk_string_list_remove (GtkStringList *self,
guint position)
{
g_return_if_fail (GTK_IS_STRING_LIST (self));
gtk_string_list_splice (self, position, 1 , NULL);
}
/**
* gtk_string_list_get_string :
* @ self : a ` GtkStringList `
* @ position : the position to get the string for
*
* Gets the string that is at @ position in @ self .
*
* If @ self does not contain @ position items , % NULL is returned .
*
* This function returns the const char * . To get the
* object wrapping it , use g_list_model_get_item ( ) .
*
* Returns : ( nullable ) : the string at the given position
*/
const char *
gtk_string_list_get_string (GtkStringList *self,
guint position)
{
g_return_val_if_fail (GTK_IS_STRING_LIST (self), NULL);
if (position >= objects_get_size (&self->items))
return NULL;
return objects_get (&self->items, position)->string;
}
/**
* gtk_string_list_find :
* @ self : a ` GtkStringList `
* @ string : the string to find
*
* Gets the position of the @ string in @ self .
*
* If @ self does not contain @ string item , ` G_MAXUINT ` is returned .
*
* Returns : the position of the string
*
* Since : 4 . 18
*/
guint
gtk_string_list_find (GtkStringList *self,
const char *string)
{
guint position;
guint items_size;
g_return_val_if_fail (GTK_IS_STRING_LIST (self), G_MAXUINT);
position = G_MAXUINT;
items_size = objects_get_size (&self->items);
for (guint i = 0 ; i < items_size; i++)
{
if (strcmp (string, objects_get (&self->items, i)->string) == 0 )
{
position = i;
break ;
}
}
return position;
}
/* }}} */
/* vim:set foldmethod=marker: */
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