xed/plugins/changecase/xed-changecase-plugin.c

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/*
* xed-changecase-plugin.c
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*
* Copyright (C) 2004-2005 - Paolo Borelli
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
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*
* $Id$
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "xed-changecase-plugin.h"
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#include <glib/gi18n-lib.h>
#include <gmodule.h>
#include <xed/xed-debug.h>
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#define WINDOW_DATA_KEY "XedChangecasePluginWindowData"
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XED_PLUGIN_REGISTER_TYPE(XedChangecasePlugin, xed_changecase_plugin)
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typedef enum {
TO_UPPER_CASE,
TO_LOWER_CASE,
INVERT_CASE,
TO_TITLE_CASE,
} ChangeCaseChoice;
static void
do_upper_case (GtkTextBuffer *buffer,
GtkTextIter *start,
GtkTextIter *end)
{
GString *s = g_string_new (NULL);
while (!gtk_text_iter_is_end (start) &&
!gtk_text_iter_equal (start, end))
{
gunichar c, nc;
c = gtk_text_iter_get_char (start);
nc = g_unichar_toupper (c);
g_string_append_unichar (s, nc);
gtk_text_iter_forward_char (start);
}
gtk_text_buffer_delete_selection (buffer, TRUE, TRUE);
gtk_text_buffer_insert_at_cursor (buffer, s->str, s->len);
g_string_free (s, TRUE);
}
static void
do_lower_case (GtkTextBuffer *buffer,
GtkTextIter *start,
GtkTextIter *end)
{
GString *s = g_string_new (NULL);
while (!gtk_text_iter_is_end (start) &&
!gtk_text_iter_equal (start, end))
{
gunichar c, nc;
c = gtk_text_iter_get_char (start);
nc = g_unichar_tolower (c);
g_string_append_unichar (s, nc);
gtk_text_iter_forward_char (start);
}
gtk_text_buffer_delete_selection (buffer, TRUE, TRUE);
gtk_text_buffer_insert_at_cursor (buffer, s->str, s->len);
g_string_free (s, TRUE);
}
static void
do_invert_case (GtkTextBuffer *buffer,
GtkTextIter *start,
GtkTextIter *end)
{
GString *s = g_string_new (NULL);
while (!gtk_text_iter_is_end (start) &&
!gtk_text_iter_equal (start, end))
{
gunichar c, nc;
c = gtk_text_iter_get_char (start);
if (g_unichar_islower (c))
nc = g_unichar_toupper (c);
else
nc = g_unichar_tolower (c);
g_string_append_unichar (s, nc);
gtk_text_iter_forward_char (start);
}
gtk_text_buffer_delete_selection (buffer, TRUE, TRUE);
gtk_text_buffer_insert_at_cursor (buffer, s->str, s->len);
g_string_free (s, TRUE);
}
static void
do_title_case (GtkTextBuffer *buffer,
GtkTextIter *start,
GtkTextIter *end)
{
GString *s = g_string_new (NULL);
while (!gtk_text_iter_is_end (start) &&
!gtk_text_iter_equal (start, end))
{
gunichar c, nc;
c = gtk_text_iter_get_char (start);
if (gtk_text_iter_starts_word (start))
nc = g_unichar_totitle (c);
else
nc = g_unichar_tolower (c);
g_string_append_unichar (s, nc);
gtk_text_iter_forward_char (start);
}
gtk_text_buffer_delete_selection (buffer, TRUE, TRUE);
gtk_text_buffer_insert_at_cursor (buffer, s->str, s->len);
g_string_free (s, TRUE);
}
static void
change_case (XedWindow *window,
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ChangeCaseChoice choice)
{
XedDocument *doc;
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GtkTextIter start, end;
xed_debug (DEBUG_PLUGINS);
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doc = xed_window_get_active_document (window);
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g_return_if_fail (doc != NULL);
if (!gtk_text_buffer_get_selection_bounds (GTK_TEXT_BUFFER (doc),
&start, &end))
{
return;
}
gtk_text_buffer_begin_user_action (GTK_TEXT_BUFFER (doc));
switch (choice)
{
case TO_UPPER_CASE:
do_upper_case (GTK_TEXT_BUFFER (doc), &start, &end);
break;
case TO_LOWER_CASE:
do_lower_case (GTK_TEXT_BUFFER (doc), &start, &end);
break;
case INVERT_CASE:
do_invert_case (GTK_TEXT_BUFFER (doc), &start, &end);
break;
case TO_TITLE_CASE:
do_title_case (GTK_TEXT_BUFFER (doc), &start, &end);
break;
default:
g_return_if_reached ();
}
gtk_text_buffer_end_user_action (GTK_TEXT_BUFFER (doc));
}
static void
upper_case_cb (GtkAction *action,
XedWindow *window)
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{
change_case (window, TO_UPPER_CASE);
}
static void
lower_case_cb (GtkAction *action,
XedWindow *window)
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{
change_case (window, TO_LOWER_CASE);
}
static void
invert_case_cb (GtkAction *action,
XedWindow *window)
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{
change_case (window, INVERT_CASE);
}
static void
title_case_cb (GtkAction *action,
XedWindow *window)
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{
change_case (window, TO_TITLE_CASE);
}
static const GtkActionEntry action_entries[] =
{
{ "ChangeCase", NULL, N_("C_hange Case") },
{ "UpperCase", NULL, N_("All _Upper Case"), NULL,
N_("Change selected text to upper case"),
G_CALLBACK (upper_case_cb) },
{ "LowerCase", NULL, N_("All _Lower Case"), NULL,
N_("Change selected text to lower case"),
G_CALLBACK (lower_case_cb) },
{ "InvertCase", NULL, N_("_Invert Case"), NULL,
N_("Invert the case of selected text"),
G_CALLBACK (invert_case_cb) },
{ "TitleCase", NULL, N_("_Title Case"), NULL,
N_("Capitalize the first letter of each selected word"),
G_CALLBACK (title_case_cb) }
};
const gchar submenu[] =
"<ui>"
" <menubar name='MenuBar'>"
" <menu name='EditMenu' action='Edit'>"
" <placeholder name='EditOps_6'>"
" <menu action='ChangeCase'>"
" <menuitem action='UpperCase'/>"
" <menuitem action='LowerCase'/>"
" <menuitem action='InvertCase'/>"
" <menuitem action='TitleCase'/>"
" </menu>"
" </placeholder>"
" </menu>"
" </menubar>"
"</ui>";
static void
xed_changecase_plugin_init (XedChangecasePlugin *plugin)
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{
xed_debug_message (DEBUG_PLUGINS, "XedChangecasePlugin initializing");
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}
static void
xed_changecase_plugin_finalize (GObject *object)
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{
G_OBJECT_CLASS (xed_changecase_plugin_parent_class)->finalize (object);
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xed_debug_message (DEBUG_PLUGINS, "XedChangecasePlugin finalizing");
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}
typedef struct
{
GtkActionGroup *action_group;
guint ui_id;
} WindowData;
static void
free_window_data (WindowData *data)
{
g_return_if_fail (data != NULL);
g_slice_free (WindowData, data);
}
static void
update_ui_real (XedWindow *window,
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WindowData *data)
{
GtkTextView *view;
GtkAction *action;
gboolean sensitive = FALSE;
xed_debug (DEBUG_PLUGINS);
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view = GTK_TEXT_VIEW (xed_window_get_active_view (window));
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if (view != NULL)
{
GtkTextBuffer *buffer;
buffer = gtk_text_view_get_buffer (view);
sensitive = (gtk_text_view_get_editable (view) &&
gtk_text_buffer_get_has_selection (buffer));
}
action = gtk_action_group_get_action (data->action_group,
"ChangeCase");
gtk_action_set_sensitive (action, sensitive);
}
static void
impl_activate (XedPlugin *plugin,
XedWindow *window)
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{
GtkUIManager *manager;
WindowData *data;
GError *error = NULL;
xed_debug (DEBUG_PLUGINS);
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data = g_slice_new (WindowData);
manager = xed_window_get_ui_manager (window);
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data->action_group = gtk_action_group_new ("XedChangecasePluginActions");
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gtk_action_group_set_translation_domain (data->action_group,
GETTEXT_PACKAGE);
gtk_action_group_add_actions (data->action_group,
action_entries,
G_N_ELEMENTS (action_entries),
window);
gtk_ui_manager_insert_action_group (manager, data->action_group, -1);
data->ui_id = gtk_ui_manager_add_ui_from_string (manager,
submenu,
-1,
&error);
if (data->ui_id == 0)
{
g_warning ("%s", error->message);
free_window_data (data);
return;
}
g_object_set_data_full (G_OBJECT (window),
WINDOW_DATA_KEY,
data,
(GDestroyNotify) free_window_data);
update_ui_real (window, data);
}
static void
impl_deactivate (XedPlugin *plugin,
XedWindow *window)
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{
GtkUIManager *manager;
WindowData *data;
xed_debug (DEBUG_PLUGINS);
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manager = xed_window_get_ui_manager (window);
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data = (WindowData *) g_object_get_data (G_OBJECT (window), WINDOW_DATA_KEY);
g_return_if_fail (data != NULL);
gtk_ui_manager_remove_ui (manager, data->ui_id);
gtk_ui_manager_remove_action_group (manager, data->action_group);
g_object_set_data (G_OBJECT (window), WINDOW_DATA_KEY, NULL);
}
static void
impl_update_ui (XedPlugin *plugin,
XedWindow *window)
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{
WindowData *data;
xed_debug (DEBUG_PLUGINS);
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data = (WindowData *) g_object_get_data (G_OBJECT (window), WINDOW_DATA_KEY);
g_return_if_fail (data != NULL);
update_ui_real (window, data);
}
static void
xed_changecase_plugin_class_init (XedChangecasePluginClass *klass)
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{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
XedPluginClass *plugin_class = XED_PLUGIN_CLASS (klass);
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object_class->finalize = xed_changecase_plugin_finalize;
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plugin_class->activate = impl_activate;
plugin_class->deactivate = impl_deactivate;
plugin_class->update_ui = impl_update_ui;
}