/*
* e-charset-combo-box.c
*
* This program 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) version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the program; if not, see <http://www.gnu.org/licenses/>
*
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "e-charset-combo-box.h"
#include <glib/gi18n.h>
#include "e-charset.h"
#include "e-misc-utils.h"
#define E_CHARSET_COMBO_BOX_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE \
((obj), E_TYPE_CHARSET_COMBO_BOX, ECharsetComboBoxPrivate))
#define DEFAULT_CHARSET "UTF-8"
#define OTHER_VALUE G_MAXINT
struct _ECharsetComboBoxPrivate {
GtkActionGroup *action_group;
GtkRadioAction *other_action;
GHashTable *charset_index;
/* Used when the user clicks Cancel in the character set
* dialog. Reverts to the previous combo box setting. */
gint previous_index;
/* When setting the character set programmatically, this
* prevents the custom character set dialog from running. */
guint block_dialog : 1;
};
enum {
PROP_0,
PROP_CHARSET
};
G_DEFINE_TYPE (
ECharsetComboBox,
e_charset_combo_box,
E_TYPE_ACTION_COMBO_BOX)
static void
charset_combo_box_entry_changed_cb (GtkEntry *entry,
GtkDialog *dialog)
{
const gchar *text;
gboolean sensitive;
text = gtk_entry_get_text (entry);
sensitive = (text != NULL && *text != '\0');
gtk_dialog_set_response_sensitive (dialog, GTK_RESPONSE_OK, sensitive);
}
static void
charset_combo_box_run_dialog (ECharsetComboBox *combo_box)
{
GtkDialog *dialog;
GtkEntry *entry;
GtkWidget *container;
GtkWidget *widget;
GObject *object;
gpointer parent;
const gchar *charset;
/* FIXME Using a dialog for this is lame. Selecting "Other..."
* should unlock an entry directly in the Preferences tab.
* Unfortunately space in Preferences is at a premium right
* now, but we should revisit this when the space issue is
* finally resolved. */
parent = gtk_widget_get_toplevel (GTK_WIDGET (combo_box));
parent = gtk_widget_is_toplevel (parent) ? parent : NULL;
object = G_OBJECT (combo_box->priv->other_action);
charset = g_object_get_data (object, "charset");
widget = gtk_dialog_new_with_buttons (
_("Character Encoding"), parent,
GTK_DIALOG_DESTROY_WITH_PARENT,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GTK_STOCK_OK, GTK_RESPONSE_OK, NULL);
/* Load the broken border width defaults so we can override them. */
gtk_widget_ensure_style (widget);
dialog = GTK_DIALOG (widget);
gtk_dialog_set_default_response (dialog, GTK_RESPONSE_OK);
gtk_container_set_border_width (GTK_CONTAINER (dialog), 12);
widget = gtk_dialog_get_action_area (dialog);
gtk_container_set_border_width (GTK_CONTAINER (widget), 0);
widget = gtk_dialog_get_content_area (dialog);
gtk_box_set_spacing (GTK_BOX (widget), 12);
gtk_container_set_border_width (GTK_CONTAINER (widget), 0);
container = widget;
widget = gtk_label_new (_("Enter the character set to use"));
gtk_label_set_line_wrap (GTK_LABEL (widget), TRUE);
gtk_misc_set_alignment (GTK_MISC (widget), 0.0, 0.5);
gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
gtk_widget_show (widget);
widget = gtk_alignment_new (0.0, 0.0, 1.0, 1.0);
gtk_alignment_set_padding (GTK_ALIGNMENT (widget), 0, 0, 12, 0);
gtk_box_pack_start (GTK_BOX (container), widget, FALSE, FALSE, 0);
gtk_widget_show (widget);
container = widget;
widget = gtk_entry_new ();
entry = GTK_ENTRY (widget);
gtk_entry_set_activates_default (entry, TRUE);
gtk_container_add (GTK_CONTAINER (container), widget);
gtk_widget_show (widget);
g_signal_connect (
entry, "changed",
G_CALLBACK (charset_combo_box_entry_changed_cb), dialog);
/* Set the default text -after- connecting the signal handler.
* This will initialize the "OK" button to the proper state. */
gtk_entry_set_text (entry, charset);
if (gtk_dialog_run (dialog) != GTK_RESPONSE_OK) {
gint active;
/* Revert to the previously selected character set. */
combo_box->priv->block_dialog = TRUE;
active = combo_box->priv->previous_index;
gtk_combo_box_set_active (GTK_COMBO_BOX (combo_box), active);
combo_box->priv->block_dialog = FALSE;
goto exit;
}
charset = gtk_entry_get_text (entry);
g_return_if_fail (charset != NULL && charset != '\0');
g_object_set_data_full (
object, "charset", g_strdup (charset),
(GDestroyNotify) g_free);
exit:
gtk_widget_destroy (GTK_WIDGET (dialog));
}
static void
charset_combo_box_notify_charset_cb (ECharsetComboBox *combo_box)
{
GtkToggleAction *action;
action = GTK_TOGGLE_ACTION (combo_box->priv->other_action);
if (!gtk_toggle_action_get_active (action))
return;
if (combo_box->priv->block_dialog)
return;
/* "Other" action was selected by user. */
charset_combo_box_run_dialog (combo_box);
}
static void
charset_combo_box_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
switch (property_id) {
case PROP_CHARSET:
e_charset_combo_box_set_charset (
E_CHARSET_COMBO_BOX (object),
g_value_get_string (value));
return;
}
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
static void
charset_combo_box_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
switch (property_id) {
case PROP_CHARSET:
g_value_set_string (
value, e_charset_combo_box_get_charset (
E_CHARSET_COMBO_BOX (object)));
return;
}
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
static void
charset_combo_box_dispose (GObject *object)
{
ECharsetComboBoxPrivate *priv;
priv = E_CHARSET_COMBO_BOX_GET_PRIVATE (object);
if (priv->action_group != NULL) {
g_object_unref (priv->action_group);
priv->action_group = NULL;
}
if (priv->other_action != NULL) {
g_object_unref (priv->other_action);
priv->other_action = NULL;
}
g_hash_table_remove_all (priv->charset_index);
/* Chain up to parent's dispose() method. */
G_OBJECT_CLASS (e_charset_combo_box_parent_class)->dispose (object);
}
static void
charset_combo_box_finalize (GObject *object)
{
ECharsetComboBoxPrivate *priv;
priv = E_CHARSET_COMBO_BOX_GET_PRIVATE (object);
g_hash_table_destroy (priv->charset_index);
/* Chain up to parent's finalize() method. */
G_OBJECT_CLASS (e_charset_combo_box_parent_class)->finalize (object);
}
static void
charset_combo_box_changed (GtkComboBox *combo_box)
{
ECharsetComboBoxPrivate *priv;
priv = E_CHARSET_COMBO_BOX_GET_PRIVATE (combo_box);
/* Chain up to parent's changed() method. */
GTK_COMBO_BOX_CLASS (e_charset_combo_box_parent_class)->
changed (combo_box);
/* Notify -before- updating previous index. */
g_object_notify (G_OBJECT (combo_box), "charset");
priv->previous_index = gtk_combo_box_get_active (combo_box);
}
static void
e_charset_combo_box_class_init (ECharsetComboBoxClass *class)
{
GObjectClass *object_class;
GtkComboBoxClass *combo_box_class;
g_type_class_add_private (class, sizeof (ECharsetComboBoxPrivate));
object_class = G_OBJECT_CLASS (class);
object_class->set_property = charset_combo_box_set_property;
object_class->get_property = charset_combo_box_get_property;
object_class->dispose = charset_combo_box_dispose;
object_class->finalize = charset_combo_box_finalize;
combo_box_class = GTK_COMBO_BOX_CLASS (class);
combo_box_class->changed = charset_combo_box_changed;
g_object_class_install_property (
object_class,
PROP_CHARSET,
g_param_spec_string (
"charset",
"Charset",
"The selected character set",
"UTF-8",
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
}
static void
e_charset_combo_box_init (ECharsetComboBox *combo_box)
{
GtkActionGroup *action_group;
GtkRadioAction *radio_action;
GHashTable *charset_index;
GSList *group, *iter;
action_group = gtk_action_group_new ("charset-combo-box-internal");
charset_index = g_hash_table_new_full (
g_str_hash, g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) g_object_unref);
combo_box->priv = E_CHARSET_COMBO_BOX_GET_PRIVATE (combo_box);
combo_box->priv->action_group = action_group;
combo_box->priv->charset_index = charset_index;
group = e_charset_add_radio_actions (
action_group, "charset-", NULL, NULL, NULL);
/* Populate the character set index. */
for (iter = group; iter != NULL; iter = iter->next) {
GObject *object = iter->data;
const gchar *charset;
charset = g_object_get_data (object, "charset");
g_return_if_fail (charset != NULL);
g_hash_table_insert (
charset_index, g_strdup (charset),
g_object_ref (object));
}
/* Note the "other" action is not included in the index. */
radio_action = gtk_radio_action_new (
"charset-other", _("Other..."), NULL, NULL, OTHER_VALUE);
g_object_set_data (G_OBJECT (radio_action), "charset", (gpointer) "");
gtk_radio_action_set_group (radio_action, group);
group = gtk_radio_action_get_group (radio_action);
e_action_combo_box_set_action (
E_ACTION_COMBO_BOX (combo_box), radio_action);
e_action_combo_box_add_separator_after (
E_ACTION_COMBO_BOX (combo_box), g_slist_length (group));
g_signal_connect (
combo_box, "notify::charset",
G_CALLBACK (charset_combo_box_notify_charset_cb), NULL);
combo_box->priv->other_action = radio_action;
}
GtkWidget *
e_charset_combo_box_new (void)
{
return g_object_new (E_TYPE_CHARSET_COMBO_BOX, NULL);
}
const gchar *
e_charset_combo_box_get_charset (ECharsetComboBox *combo_box)
{
GtkRadioAction *radio_action;
g_return_val_if_fail (E_IS_CHARSET_COMBO_BOX (combo_box), NULL);
radio_action = combo_box->priv->other_action;
radio_action = e_radio_action_get_current_action (radio_action);
return g_object_get_data (G_OBJECT (radio_action), "charset");
}
void
e_charset_combo_box_set_charset (ECharsetComboBox *combo_box,
const gchar *charset)
{
GHashTable *charset_index;
GtkRadioAction *radio_action;
g_return_if_fail (E_IS_CHARSET_COMBO_BOX (combo_box));
if (charset == NULL || *charset == '\0')
charset = "UTF-8";
charset_index = combo_box->priv->charset_index;
radio_action = g_hash_table_lookup (charset_index, charset);
if (radio_action == NULL) {
radio_action = combo_box->priv->other_action;
g_object_set_data_full (
G_OBJECT (radio_action),
"charset", g_strdup (charset),
(GDestroyNotify) g_free);
}
combo_box->priv->block_dialog = TRUE;
gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (radio_action), TRUE);
combo_box->priv->block_dialog = FALSE;
}
