mirror of
https://gitlab.gnome.org/GNOME/gtk.git
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84b259d076
If there is an entry, it is supposed to return the contents of the entry. Pointed out by Allin Cottrell, https://bugzilla.gnome.org/show_bug.cgi?id=642681
608 lines
17 KiB
C
608 lines
17 KiB
C
/* GTK - The GIMP Toolkit
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*
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* Copyright (C) 2010 Christian Dywan
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gtkcomboboxtext.h"
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#include "gtkcombobox.h"
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#include "gtkcellrenderertext.h"
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#include "gtkcelllayout.h"
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#include "gtkbuildable.h"
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#include "gtkbuilderprivate.h"
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#include <string.h>
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/**
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* SECTION:gtkcomboboxtext
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* @Short_description: A simple, text-only combo box
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* @Title: GtkComboBoxText
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* @See_also: #GtkComboBox
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*
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* A GtkComboBoxText is a simple variant of #GtkComboBox that hides
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* the model-view complexity for simple text-only use cases.
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*
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* To create a GtkComboBoxText, use gtk_combo_box_text_new() or
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* gtk_combo_box_text_new_with_entry().
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*
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* You can add items to a GtkComboBoxText with
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* gtk_combo_box_text_append_text(), gtk_combo_box_text_insert_text()
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* or gtk_combo_box_text_prepend_text() and remove options with
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* gtk_combo_box_text_remove().
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*
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* If the GtkComboBoxText contains an entry (via the 'has-entry' property),
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* its contents can be retrieved using gtk_combo_box_text_get_active_text().
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* The entry itself can be accessed by calling gtk_bin_get_child() on the
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* combo box.
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*
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* <refsect2 id="GtkComboBoxText-BUILDER-UI">
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* <title>GtkComboBoxText as GtkBuildable</title>
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* <para>
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* The GtkComboBoxText implementation of the GtkBuildable interface
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* supports adding items directly using the <items> element
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* and specifying <item> elements for each item. Each <item>
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* element supports the regular translation attributes "translatable",
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* "context" and "comments".
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*
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* <example>
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* <title>A UI definition fragment specifying GtkComboBoxText items</title>
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* <programlisting><![CDATA[
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* <object class="GtkComboBoxText">
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* <items>
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* <item translatable="yes">Factory</item>
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* <item translatable="yes">Home</item>
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* <item translatable="yes">Subway</item>
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* </items>
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* </object>
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* ]]></programlisting>
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* </example>
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* </para>
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* </refsect2>
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*/
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static void gtk_combo_box_text_buildable_interface_init (GtkBuildableIface *iface);
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static gboolean gtk_combo_box_text_buildable_custom_tag_start (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const gchar *tagname,
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GMarkupParser *parser,
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gpointer *data);
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static void gtk_combo_box_text_buildable_custom_finished (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const gchar *tagname,
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gpointer user_data);
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static GtkBuildableIface *buildable_parent_iface = NULL;
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G_DEFINE_TYPE_WITH_CODE (GtkComboBoxText, gtk_combo_box_text, GTK_TYPE_COMBO_BOX,
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G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
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gtk_combo_box_text_buildable_interface_init));
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static GObject *
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gtk_combo_box_text_constructor (GType type,
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guint n_construct_properties,
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GObjectConstructParam *construct_properties)
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{
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GObject *object;
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object = G_OBJECT_CLASS (gtk_combo_box_text_parent_class)->constructor
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(type, n_construct_properties, construct_properties);
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if (!gtk_combo_box_get_has_entry (GTK_COMBO_BOX (object)))
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{
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GtkCellRenderer *cell;
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cell = gtk_cell_renderer_text_new ();
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gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (object), cell, TRUE);
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gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (object), cell,
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"text", 0,
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NULL);
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}
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return object;
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}
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static void
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gtk_combo_box_text_init (GtkComboBoxText *combo_box)
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{
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GtkListStore *store;
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store = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_STRING);
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gtk_combo_box_set_model (GTK_COMBO_BOX (combo_box), GTK_TREE_MODEL (store));
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g_object_unref (store);
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}
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static void
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gtk_combo_box_text_class_init (GtkComboBoxTextClass *klass)
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{
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GObjectClass *object_class;
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object_class = (GObjectClass *)klass;
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object_class->constructor = gtk_combo_box_text_constructor;
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}
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static void
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gtk_combo_box_text_buildable_interface_init (GtkBuildableIface *iface)
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{
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buildable_parent_iface = g_type_interface_peek_parent (iface);
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iface->custom_tag_start = gtk_combo_box_text_buildable_custom_tag_start;
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iface->custom_finished = gtk_combo_box_text_buildable_custom_finished;
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}
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typedef struct {
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GtkBuilder *builder;
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GObject *object;
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const gchar *domain;
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GString *string;
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gchar *context;
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guint translatable : 1;
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guint is_text : 1;
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} ItemParserData;
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static void
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item_start_element (GMarkupParseContext *context,
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const gchar *element_name,
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const gchar **names,
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const gchar **values,
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gpointer user_data,
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GError **error)
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{
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ItemParserData *data = (ItemParserData*)user_data;
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guint i;
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if (strcmp (element_name, "item") == 0)
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{
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data->is_text = TRUE;
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for (i = 0; names[i]; i++)
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{
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if (strcmp (names[i], "translatable") == 0)
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{
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gboolean bval;
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if (!_gtk_builder_boolean_from_string (values[i], &bval,
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error))
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return;
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data->translatable = bval;
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}
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else if (strcmp (names[i], "comments") == 0)
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{
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/* do nothing, comments are for translators */
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}
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else if (strcmp (names[i], "context") == 0)
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data->context = g_strdup (values[i]);
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else
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g_warning ("Unknown custom combo box item attribute: %s", names[i]);
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}
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}
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}
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static void
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item_text (GMarkupParseContext *context,
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const gchar *text,
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gsize text_len,
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gpointer user_data,
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GError **error)
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{
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ItemParserData *data = (ItemParserData*)user_data;
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if (data->is_text)
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g_string_append_len (data->string, text, text_len);
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}
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static void
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item_end_element (GMarkupParseContext *context,
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const gchar *element_name,
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gpointer user_data,
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GError **error)
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{
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ItemParserData *data = (ItemParserData*)user_data;
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/* Append the translated strings */
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if (data->string->len)
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{
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if (data->translatable)
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{
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gchar *translated;
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/* FIXME: This will not use the domain set in the .ui file,
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* since the parser is not telling the builder about the domain.
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* However, it will work for gtk_builder_set_translation_domain() calls.
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*/
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translated = _gtk_builder_parser_translate (data->domain,
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data->context,
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data->string->str);
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g_string_set_size (data->string, 0);
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g_string_append (data->string, translated);
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}
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gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (data->object), data->string->str);
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}
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data->translatable = FALSE;
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g_string_set_size (data->string, 0);
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g_free (data->context);
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data->context = NULL;
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data->is_text = FALSE;
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}
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static const GMarkupParser item_parser =
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{
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item_start_element,
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item_end_element,
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item_text
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};
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static gboolean
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gtk_combo_box_text_buildable_custom_tag_start (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const gchar *tagname,
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GMarkupParser *parser,
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gpointer *data)
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{
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if (buildable_parent_iface->custom_tag_start (buildable, builder, child,
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tagname, parser, data))
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return TRUE;
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if (strcmp (tagname, "items") == 0)
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{
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ItemParserData *parser_data;
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parser_data = g_slice_new0 (ItemParserData);
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parser_data->builder = g_object_ref (builder);
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parser_data->object = g_object_ref (buildable);
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parser_data->domain = gtk_builder_get_translation_domain (builder);
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parser_data->string = g_string_new ("");
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*parser = item_parser;
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*data = parser_data;
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return TRUE;
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}
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return FALSE;
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}
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static void
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gtk_combo_box_text_buildable_custom_finished (GtkBuildable *buildable,
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GtkBuilder *builder,
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GObject *child,
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const gchar *tagname,
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gpointer user_data)
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{
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ItemParserData *data;
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buildable_parent_iface->custom_finished (buildable, builder, child,
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tagname, user_data);
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if (strcmp (tagname, "items") == 0)
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{
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data = (ItemParserData*)user_data;
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g_object_unref (data->object);
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g_object_unref (data->builder);
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g_string_free (data->string, TRUE);
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g_slice_free (ItemParserData, data);
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}
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}
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/**
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* gtk_combo_box_text_new:
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*
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* Creates a new #GtkComboBoxText, which is a #GtkComboBox just displaying
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* strings. See gtk_combo_box_entry_new_with_text().
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*
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* Return value: A new #GtkComboBoxText
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*
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* Since: 2.24
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*/
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GtkWidget *
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gtk_combo_box_text_new (void)
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{
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return g_object_new (GTK_TYPE_COMBO_BOX_TEXT,
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"entry-text-column", 0,
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"id-column", 1,
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NULL);
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}
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/**
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* gtk_combo_box_text_new_with_entry:
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*
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* Creates a new #GtkComboBoxText, which is a #GtkComboBox just displaying
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* strings. The combo box created by this function has an entry.
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*
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* Return value: a new #GtkComboBoxText
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*
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* Since: 2.24
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*/
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GtkWidget *
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gtk_combo_box_text_new_with_entry (void)
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{
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return g_object_new (GTK_TYPE_COMBO_BOX_TEXT,
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"has-entry", TRUE,
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"entry-text-column", 0,
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"id-column", 1,
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NULL);
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}
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/**
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* gtk_combo_box_text_append_text:
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* @combo_box: A #GtkComboBoxText
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* @text: A string
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*
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* Appends @text to the list of strings stored in @combo_box.
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*
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* This is the same as calling gtk_combo_box_text_insert_text() with a
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* position of -1.
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*
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* Since: 2.24
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*/
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void
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gtk_combo_box_text_append_text (GtkComboBoxText *combo_box,
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const gchar *text)
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{
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gtk_combo_box_text_insert (combo_box, -1, NULL, text);
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}
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/**
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* gtk_combo_box_text_prepend_text:
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* @combo_box: A #GtkComboBox
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* @text: A string
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*
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* Prepends @text to the list of strings stored in @combo_box.
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*
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* This is the same as calling gtk_combo_box_text_insert_text() with a
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* position of 0.
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*
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* Since: 2.24
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*/
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void
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gtk_combo_box_text_prepend_text (GtkComboBoxText *combo_box,
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const gchar *text)
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{
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gtk_combo_box_text_insert (combo_box, 0, NULL, text);
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}
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/**
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* gtk_combo_box_text_insert_text:
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* @combo_box: A #GtkComboBoxText
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* @position: An index to insert @text
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* @text: A string
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*
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* Inserts @text at @position in the list of strings stored in @combo_box.
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*
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* If @position is negative then @text is appended.
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*
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* This is the same as calling gtk_combo_box_text_insert() with a %NULL
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* ID string.
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*
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* Since: 2.24
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*/
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void
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gtk_combo_box_text_insert_text (GtkComboBoxText *combo_box,
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gint position,
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const gchar *text)
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{
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gtk_combo_box_text_insert (combo_box, position, NULL, text);
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}
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/**
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* gtk_combo_box_text_append:
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* @combo_box: A #GtkComboBoxText
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* @id: (allow-none): a string ID for this value, or %NULL
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* @text: A string
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*
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* Appends @text to the list of strings stored in @combo_box.
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* If @id is non-%NULL then it is used as the ID of the row.
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*
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* This is the same as calling gtk_combo_box_text_insert() with a
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* position of -1.
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*
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* Since: 2.24
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*/
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void
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gtk_combo_box_text_append (GtkComboBoxText *combo_box,
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const gchar *id,
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const gchar *text)
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{
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gtk_combo_box_text_insert (combo_box, -1, id, text);
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}
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/**
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* gtk_combo_box_text_prepend:
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* @combo_box: A #GtkComboBox
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* @id: (allow-none): a string ID for this value, or %NULL
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* @text: a string
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*
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* Prepends @text to the list of strings stored in @combo_box.
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* If @id is non-%NULL then it is used as the ID of the row.
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*
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* This is the same as calling gtk_combo_box_text_insert() with a
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* position of 0.
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*
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* Since: 2.24
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*/
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void
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gtk_combo_box_text_prepend (GtkComboBoxText *combo_box,
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const gchar *id,
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const gchar *text)
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{
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gtk_combo_box_text_insert (combo_box, 0, id, text);
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}
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/**
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* gtk_combo_box_text_insert:
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* @combo_box: A #GtkComboBoxText
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* @position: An index to insert @text
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* @id: (allow-none): a string ID for this value, or %NULL
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* @text: A string to display
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*
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* Inserts @text at @position in the list of strings stored in @combo_box.
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* If @id is non-%NULL then it is used as the ID of the row. See
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* #GtkComboBox::id-column.
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*
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* If @position is negative then @text is appended.
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*
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* Since: 3.0
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*/
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void
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gtk_combo_box_text_insert (GtkComboBoxText *combo_box,
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gint position,
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const gchar *id,
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const gchar *text)
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{
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GtkListStore *store;
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GtkTreeIter iter;
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gint text_column;
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gint column_type;
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g_return_if_fail (GTK_IS_COMBO_BOX_TEXT (combo_box));
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g_return_if_fail (text != NULL);
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store = GTK_LIST_STORE (gtk_combo_box_get_model (GTK_COMBO_BOX (combo_box)));
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g_return_if_fail (GTK_IS_LIST_STORE (store));
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text_column = gtk_combo_box_get_entry_text_column (GTK_COMBO_BOX (combo_box));
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if (gtk_combo_box_get_has_entry (GTK_COMBO_BOX (combo_box)))
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g_return_if_fail (text_column >= 0);
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else if (text_column < 0)
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text_column = 0;
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column_type = gtk_tree_model_get_column_type (GTK_TREE_MODEL (store), text_column);
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g_return_if_fail (column_type == G_TYPE_STRING);
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if (position < 0)
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gtk_list_store_append (store, &iter);
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else
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gtk_list_store_insert (store, &iter, position);
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gtk_list_store_set (store, &iter, text_column, text, -1);
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if (id != NULL)
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{
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gint id_column;
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id_column = gtk_combo_box_get_id_column (GTK_COMBO_BOX (combo_box));
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g_return_if_fail (id_column >= 0);
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column_type = gtk_tree_model_get_column_type (GTK_TREE_MODEL (store), id_column);
|
|
g_return_if_fail (column_type == G_TYPE_STRING);
|
|
|
|
gtk_list_store_set (store, &iter, id_column, id, -1);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_combo_box_text_remove:
|
|
* @combo_box: A #GtkComboBox
|
|
* @position: Index of the item to remove
|
|
*
|
|
* Removes the string at @position from @combo_box.
|
|
*
|
|
* Since: 2.24
|
|
*/
|
|
void
|
|
gtk_combo_box_text_remove (GtkComboBoxText *combo_box,
|
|
gint position)
|
|
{
|
|
GtkTreeModel *model;
|
|
GtkListStore *store;
|
|
GtkTreeIter iter;
|
|
|
|
g_return_if_fail (GTK_IS_COMBO_BOX_TEXT (combo_box));
|
|
g_return_if_fail (position >= 0);
|
|
|
|
model = gtk_combo_box_get_model (GTK_COMBO_BOX (combo_box));
|
|
store = GTK_LIST_STORE (model);
|
|
g_return_if_fail (GTK_IS_LIST_STORE (store));
|
|
|
|
if (gtk_tree_model_iter_nth_child (model, &iter, NULL, position))
|
|
gtk_list_store_remove (store, &iter);
|
|
}
|
|
|
|
/**
|
|
* gtk_combo_box_text_remove_all:
|
|
* @combo_box: A #GtkComboBoxText
|
|
*
|
|
* Removes all the text entries from the combo box.
|
|
*
|
|
* Since: 3.0
|
|
*/
|
|
void
|
|
gtk_combo_box_text_remove_all (GtkComboBoxText *combo_box)
|
|
{
|
|
GtkListStore *store;
|
|
|
|
g_return_if_fail (GTK_IS_COMBO_BOX_TEXT (combo_box));
|
|
|
|
store = GTK_LIST_STORE (gtk_combo_box_get_model (GTK_COMBO_BOX (combo_box)));
|
|
gtk_list_store_clear (store);
|
|
}
|
|
|
|
/**
|
|
* gtk_combo_box_text_get_active_text:
|
|
* @combo_box: A #GtkComboBoxText
|
|
*
|
|
* Returns the currently active string in @combo_box, or %NULL
|
|
* if none is selected. If @combo_box contains an entry, this
|
|
* function will return its contents (which will not necessarily
|
|
* be an item from the list).
|
|
*
|
|
* Returns: a newly allocated string containing the currently
|
|
* active text. Must be freed with g_free().
|
|
*
|
|
* Since: 2.24
|
|
*/
|
|
gchar *
|
|
gtk_combo_box_text_get_active_text (GtkComboBoxText *combo_box)
|
|
{
|
|
GtkTreeIter iter;
|
|
gchar *text = NULL;
|
|
|
|
g_return_val_if_fail (GTK_IS_COMBO_BOX_TEXT (combo_box), NULL);
|
|
|
|
if (gtk_combo_box_get_has_entry (GTK_COMBO_BOX (combo_box)))
|
|
{
|
|
GtkWidget *entry;
|
|
|
|
entry = gtk_bin_get_child (GTK_BIN (combo_box));
|
|
text = g_strdup (gtk_entry_get_text (GTK_ENTRY (entry)));
|
|
}
|
|
else if (gtk_combo_box_get_active_iter (GTK_COMBO_BOX (combo_box), &iter))
|
|
{
|
|
GtkTreeModel *model;
|
|
gint text_column;
|
|
gint column_type;
|
|
|
|
model = gtk_combo_box_get_model (GTK_COMBO_BOX (combo_box));
|
|
g_return_val_if_fail (GTK_IS_LIST_STORE (model), NULL);
|
|
text_column = gtk_combo_box_get_entry_text_column (GTK_COMBO_BOX (combo_box));
|
|
g_return_val_if_fail (text_column >= 0, NULL);
|
|
column_type = gtk_tree_model_get_column_type (model, text_column);
|
|
g_return_val_if_fail (column_type == G_TYPE_STRING, NULL);
|
|
gtk_tree_model_get (model, &iter, text_column, &text, -1);
|
|
}
|
|
|
|
return text;
|
|
}
|