/*
*
* 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/>
*
*
* Authors:
* Holger Macht <hmacht@suse.de>
* based on work by Sankar P <psankar@novell.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <mail/em-config.h>
#include <mail/em-composer-utils.h>
#include <libevolution-utils/e-alert-dialog.h>
#include <e-msg-composer.h>
#include <glib/gi18n-lib.h>
#include <glib/gstdio.h>
#include <gdk/gdkkeysyms.h>
#include <sys/stat.h>
#ifdef HAVE_SYS_WAIT_H
# include <sys/wait.h>
#endif
#include <stdlib.h>
#include <string.h>
#define d(x)
gboolean e_plugin_ui_init (GtkUIManager *manager,
EMsgComposer *composer);
GtkWidget * e_plugin_lib_get_configure_widget
(EPlugin *epl);
static void ee_editor_command_changed
(GtkWidget *textbox);
static void ee_editor_immediate_launch_changed
(GtkWidget *checkbox);
static void async_external_editor (EMsgComposer *composer);
static gboolean editor_running (void);
static gboolean key_press_cb (GtkWidget *widget,
GdkEventKey *event,
EMsgComposer *composer);
/* used to track when the external editor is active */
static GThread *editor_thread;
gint e_plugin_lib_enable (EPlugin *ep, gint enable);
gint
e_plugin_lib_enable (EPlugin *ep,
gint enable)
{
return 0;
}
void
ee_editor_command_changed (GtkWidget *textbox)
{
const gchar *editor;
GSettings *settings;
editor = gtk_entry_get_text (GTK_ENTRY (textbox));
d(printf ("\n\aeditor is : [%s] \n\a", editor));
/* GSettings access for every key-press. Sucky ? */
settings = g_settings_new ("org.gnome.evolution.plugin.external-editor");
g_settings_set_string (settings, "command", editor);
g_object_unref (settings);
}
void
ee_editor_immediate_launch_changed (GtkWidget *checkbox)
{
gboolean immediately;
GSettings *settings;
immediately = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (checkbox));
d(printf ("\n\aimmediate launch is : [%d] \n\a", immediately));
settings = g_settings_new ("org.gnome.evolution.plugin.external-editor");
g_settings_set_boolean (settings, "launch-on-key-press", immediately);
g_object_unref (settings);
}
GtkWidget *
e_plugin_lib_get_configure_widget (EPlugin *epl)
{
GtkWidget *vbox, *textbox, *label, *help;
GtkWidget *checkbox;
GSettings *settings;
gchar *editor;
gboolean checked;
vbox = gtk_vbox_new (FALSE, 10);
textbox = gtk_entry_new ();
label = gtk_label_new (_("Command to be executed to launch the editor: "));
help = gtk_label_new (_("For XEmacs use \"xemacs\"\nFor Vim use \"gvim -f\""));
settings = g_settings_new ("org.gnome.evolution.plugin.external-editor");
editor = g_settings_get_string (settings, "command");
if (editor) {
gtk_entry_set_text (GTK_ENTRY (textbox), editor);
g_free (editor);
}
checkbox = gtk_check_button_new_with_label (
_("Automatically launch when a new mail is edited"));
checked = g_settings_get_boolean (settings, "launch-on-key-press");
if (checked)
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (checkbox), TRUE);
g_object_unref (settings);
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), textbox, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), help, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), checkbox, FALSE, FALSE, 0);
g_signal_connect (
textbox, "changed",
G_CALLBACK (ee_editor_command_changed), textbox);
g_signal_connect (
checkbox, "toggled",
G_CALLBACK (ee_editor_immediate_launch_changed), checkbox);
gtk_widget_show_all (vbox);
return vbox;
}
static void
enable_disable_composer (EMsgComposer *composer,
gboolean enable)
{
GtkhtmlEditor *editor;
GtkAction *action;
GtkActionGroup *action_group;
g_return_if_fail (E_IS_MSG_COMPOSER (composer));
editor = GTKHTML_EDITOR (composer);
if (enable)
gtkhtml_editor_run_command (editor, "editable-on");
else
gtkhtml_editor_run_command (editor, "editable-off");
action = GTKHTML_EDITOR_ACTION_EDIT_MENU (composer);
gtk_action_set_sensitive (action, enable);
action = GTKHTML_EDITOR_ACTION_FORMAT_MENU (composer);
gtk_action_set_sensitive (action, enable);
action = GTKHTML_EDITOR_ACTION_INSERT_MENU (composer);
gtk_action_set_sensitive (action, enable);
action_group = gtkhtml_editor_get_action_group (editor, "composer");
gtk_action_group_set_sensitive (action_group, enable);
}
static void
enable_composer (EMsgComposer *composer)
{
enable_disable_composer (composer, TRUE);
}
static void
disable_composer (EMsgComposer *composer)
{
enable_disable_composer (composer, FALSE);
}
/* needed because the new thread needs to call g_idle_add () */
static gboolean
update_composer_text (GArray *array)
{
EMsgComposer *composer;
gchar *text;
composer = g_array_index (array, gpointer, 0);
text = g_array_index (array, gpointer, 1);
e_msg_composer_set_body_text (composer, text, FALSE);
enable_composer (composer);
g_free (text);
return FALSE;
}
struct run_error_dialog_data
{
EMsgComposer *composer;
const gchar *text;
};
/* needed because the new thread needs to call g_idle_add () */
static gboolean
run_error_dialog (struct run_error_dialog_data *data)
{
g_return_val_if_fail (data != NULL, FALSE);
e_alert_run_dialog_for_args (GTK_WINDOW (data->composer), data->text, NULL);
enable_composer (data->composer);
g_free (data);
return FALSE;
}
static gint
numlines (const gchar *text,
gint pos)
{
gint ctr = 0;
gint lineno = 0;
while (text && *text && ctr <= pos) {
if (*text == '\n')
lineno++;
text++;
ctr++;
}
if (lineno > 0) {
lineno++;
}
return lineno;
}
void
async_external_editor (EMsgComposer *composer)
{
gchar *filename = NULL;
gint status = 0;
GSettings *settings;
gchar *editor_cmd_line = NULL, *editor_cmd = NULL, *content;
gint fd, position = -1, offset = -1;
/* prefix temp files with evo so .*vimrc can be setup to recognize them */
fd = g_file_open_tmp ("evoXXXXXX", &filename, NULL);
if (fd > 0) {
gsize length = 0;
close (fd);
d(printf ("\n\aTemporary-file Name is : [%s] \n\a", filename));
/* Push the text (if there is one) from the composer to the file */
content = gtkhtml_editor_get_text_plain (GTKHTML_EDITOR (composer), &length);
g_file_set_contents (filename, content, length, NULL);
} else {
struct run_error_dialog_data *data;
data = g_new0 (struct run_error_dialog_data, 1);
data->composer = composer;
data->text = "org.gnome.evolution.plugins.external-editor:no-temp-file";
g_warning ("Temporary file fd is null");
/* run_error_dialog also calls enable_composer */
g_idle_add ((GSourceFunc) run_error_dialog, data);
return;
}
settings = g_settings_new ("org.gnome.evolution.plugin.external-editor");
editor_cmd = g_settings_get_string (settings, "command");
if (!editor_cmd) {
if (!(editor_cmd = g_strdup (g_getenv ("EDITOR"))) )
/* Make gedit the default external editor,
* if the default schemas are not installed
* and no $EDITOR is set. */
editor_cmd = g_strdup ("gedit");
}
g_object_unref (settings);
if (g_strrstr (editor_cmd, "vim") != NULL
&& gtk_html_get_cursor_pos (
gtkhtml_editor_get_html (
GTKHTML_EDITOR (composer)), &position, &offset)
&& position >= 0 && offset >= 0) {
gchar *tmp = editor_cmd;
gint lineno;
gboolean set_nofork;
set_nofork = g_strrstr (editor_cmd, "gvim") != NULL;
/* Increment 1 so that entering vim insert mode places you
* in the same entry position you were at in the html. */
offset++;
/* calculate the line number that the cursor is in */
lineno = numlines (content, position);
editor_cmd = g_strdup_printf (
"%s \"+call cursor(%d,%d)\"%s%s",
tmp, lineno, offset,
set_nofork ? " " : "",
set_nofork ? "--nofork" : "");
g_free (tmp);
}
g_free (content);
editor_cmd_line = g_strconcat (editor_cmd, " ", filename, NULL);
if (!g_spawn_command_line_sync (editor_cmd_line, NULL, NULL, &status, NULL)) {
struct run_error_dialog_data *data;
g_warning ("Unable to launch %s: ", editor_cmd_line);
data = g_new0 (struct run_error_dialog_data, 1);
data->composer = composer;
data->text = "org.gnome.evolution.plugins.external-editor:editor-not-launchable";
/* run_error_dialog also calls enable_composer */
g_idle_add ((GSourceFunc) run_error_dialog, data);
g_free (filename);
g_free (editor_cmd_line);
g_free (editor_cmd);
return;
}
g_free (editor_cmd_line);
g_free (editor_cmd);
#ifdef HAVE_SYS_WAIT_H
if (WEXITSTATUS (status) != 0) {
#else
if (status) {
#endif
d(printf ("\n\nsome problem here with external editor\n\n"));
g_idle_add ((GSourceFunc) enable_composer, composer);
return;
} else {
gchar *buf;
if (g_file_get_contents (filename, &buf, NULL, NULL)) {
gchar *htmltext;
GArray *array;
htmltext = camel_text_to_html (buf, CAMEL_MIME_FILTER_TOHTML_PRE, 0);
array = g_array_sized_new (TRUE, TRUE,
sizeof (gpointer), 2 * sizeof (gpointer));
array = g_array_append_val (array, composer);
array = g_array_append_val (array, htmltext);
g_idle_add ((GSourceFunc) update_composer_text, array);
/* We no longer need that temporary file */
g_remove (filename);
g_free (filename);
}
}
}
static void launch_editor (GtkAction *action, EMsgComposer *composer)
{
d(printf ("\n\nexternal_editor plugin is launched \n\n"));
if (editor_running ()) {
d(printf("not opening editor, because it's still running\n"));
return;
}
disable_composer (composer);
editor_thread = g_thread_create (
(GThreadFunc) async_external_editor, composer, FALSE, NULL);
}
static GtkActionEntry entries[] = {
{ "ExternalEditor",
GTK_STOCK_EDIT,
N_("Compose in External Editor"),
"<Shift><Control>e",
N_("Compose in External Editor"),
G_CALLBACK (launch_editor) }
};
static gboolean
key_press_cb (GtkWidget *widget,
GdkEventKey *event,
EMsgComposer *composer)
{
GSettings *settings;
gboolean immediately;
/* we don't want to start the editor on any modifier keys */
switch (event->keyval) {
case GDK_KEY_Alt_L:
case GDK_KEY_Alt_R:
case GDK_KEY_Super_L:
case GDK_KEY_Super_R:
case GDK_KEY_Control_L:
case GDK_KEY_Control_R:
return FALSE;
default:
break;
}
settings = g_settings_new ("org.gnome.evolution.plugin.external-editor");
immediately = g_settings_get_boolean (settings, "launch-on-key-press");
g_object_unref (settings);
if (!immediately)
return FALSE;
launch_editor (NULL, composer);
return TRUE;
}
static void
editor_running_thread_func (GThread *thread,
gpointer running)
{
if (thread == editor_thread)
*(gboolean*)running = TRUE;
}
/* Racy? */
static gboolean
editor_running (void)
{
gboolean running = FALSE;
g_thread_foreach ((GFunc) editor_running_thread_func, &running);
return running;
}
static gboolean
delete_cb (GtkWidget *widget,
EMsgComposer *composer)
{
if (editor_running ()) {
e_alert_run_dialog_for_args (
NULL, "org.gnome.evolution.plugins."
"external-editor:editor-still-running", NULL);
return TRUE;
}
return FALSE;
}
gboolean
e_plugin_ui_init (GtkUIManager *manager,
EMsgComposer *composer)
{
GtkhtmlEditor *editor;
EWebViewGtkHTML *web_view;
editor = GTKHTML_EDITOR (composer);
/* Add actions to the "composer" action group. */
gtk_action_group_add_actions (
gtkhtml_editor_get_action_group (editor, "composer"),
entries, G_N_ELEMENTS (entries), composer);
web_view = e_msg_composer_get_web_view (composer);
g_signal_connect (
web_view, "key_press_event",
G_CALLBACK (key_press_cb), composer);
g_signal_connect (
web_view, "delete-event",
G_CALLBACK (delete_cb), composer);
return TRUE;
}
