-/* command.c:

- *

- * Copyright (C) 2013-2014 Stefano Karapetsas

- *

- * This file is part of MATE Applets.

- *

- * 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 of the

- * License, 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

- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

- *

- * Authors:

- * Stefano Karapetsas <[email protected]>

- */

-

-#include <config.h>

-

-#include <glib.h>

-#include <gmodule.h>

-#include <glib/gi18n.h>

-#include <gio/gio.h>

-#include <gtk/gtk.h>

-

-#include <mate-panel-applet.h>

-#include <mate-panel-applet-gsettings.h>

-#include "ma-command.h"

-

-/* Applet constants */

-#define APPLET_ICON "utilities-terminal"

-#define ERROR_OUTPUT "#"

-

-/* GSettings constants */

-#define COMMAND_SCHEMA "org.mate.panel.applet.command"

-#define COMMAND_KEY "command"

-#define INTERVAL_KEY "interval"

-#define SHOW_ICON_KEY "show-icon"

-#define WIDTH_KEY "width"

-

-/* GKeyFile constants */

-#define GK_COMMAND_GROUP "Command"

-#define GK_COMMAND_OUTPUT "Output"

-#define GK_COMMAND_ICON "Icon"

-

-#define GET_WIDGET(x) (GTK_WIDGET (gtk_builder_get_object (builder, (x))))

-#define GET_DIALOG(x) (GTK_DIALOG (gtk_builder_get_object (builder, (x))))

-

-typedef struct

-{

- MatePanelApplet *applet;

-

- GSettings *settings;

-

- GtkLabel *label;

- GtkImage *image;

- GtkBox *box;

- MaCommand *command;

- GCancellable *cancellable;

- gboolean running;

-

- gchar *cmdline;

- gint interval;

- gint width;

-

- guint timeout_id;

-} CommandApplet;

-

-static void command_about_callback (GtkAction *action, CommandApplet *command_applet);

-static void command_settings_callback (GtkAction *action, CommandApplet *command_applet);

-static gboolean command_execute (CommandApplet *command_applet);

-static gboolean command_text_changed (GtkWidget *widget, GdkEvent *event, gpointer user_data);

-static void interval_value_changed (GtkSpinButton *spin_button, gpointer user_data);

-static void width_value_changed (GtkSpinButton *spin_button, gpointer user_data);

-static void command_async_ready_callback (GObject *source_object, GAsyncResult *res, gpointer user_data);

-static gboolean timeout_callback (CommandApplet *command_applet);

-

-static const GtkActionEntry applet_menu_actions [] = {

- { "Preferences", "document-properties", N_("_Preferences"), NULL, NULL, G_CALLBACK (command_settings_callback) },

- { "About", "help-about", N_("_About"), NULL, NULL, G_CALLBACK (command_about_callback) }

-};

-

-static char *ui = "<menuitem name='Item 1' action='Preferences' />"

- "<menuitem name='Item 2' action='About' />";

-

-static void

-command_applet_destroy (MatePanelApplet *applet_widget, CommandApplet *command_applet)

-{

- g_assert (command_applet);

-

- if (command_applet->timeout_id != 0)

- {

- g_source_remove (command_applet->timeout_id);

- command_applet->timeout_id = 0;

- }

-

- if (command_applet->cmdline != NULL)

- {

- g_free (command_applet->cmdline);

- command_applet->cmdline = NULL;

- }

-

- if (command_applet->command != NULL)

- {

- g_object_unref (command_applet->command);

- }

-

- g_object_unref (command_applet->settings);

-}

-

-/* Show the about dialog */

-static void

-command_about_callback (GtkAction *action, CommandApplet *command_applet)

-{

- const char* authors[] = { "Stefano Karapetsas <[email protected]>", NULL };

-

- gtk_show_about_dialog(NULL,

- "title", _("About Command Applet"),

- "version", VERSION,

- "copyright", _("Copyright \xc2\xa9 2013-2014 Stefano Karapetsas\n"

- "Copyright \xc2\xa9 2015-2020 MATE developers"),

- "authors", authors,

- "comments", _("Shows the output of a command"),

- "translator-credits", _("translator-credits"),

- "logo-icon-name", APPLET_ICON,

- NULL );

-}

-

-static gboolean

-command_text_changed (GtkWidget *widget, GdkEvent *event, gpointer user_data)

-{

- const gchar *text;

- CommandApplet *command_applet;

-

- command_applet = (CommandApplet*) user_data;

- text = gtk_entry_get_text (GTK_ENTRY(widget));

- if (g_strcmp0(command_applet->cmdline, text) == 0) {

- return TRUE;

- }

-

- if (strlen (text) == 0) {

- gtk_label_set_text (command_applet->label, ERROR_OUTPUT);

- return TRUE;

- }

-

- g_settings_set_string (command_applet->settings, COMMAND_KEY, text);

- return TRUE;

-}

-

-static void interval_value_changed (GtkSpinButton *spin_button, gpointer user_data)

-{

- gint value;

- CommandApplet *command_applet;

-

- command_applet = (CommandApplet*) user_data;

- value = gtk_spin_button_get_value_as_int (spin_button);

- if (command_applet->interval == value) {

- return;

- }

-

- g_settings_set_int (command_applet->settings, INTERVAL_KEY, value);

-}

-

-static void width_value_changed (GtkSpinButton *spin_button, gpointer user_data)

-{

- gint value;

- CommandApplet *command_applet;

-

- command_applet = (CommandApplet*) user_data;

- value = gtk_spin_button_get_value_as_int (spin_button);

- if (command_applet->width == value) {

- return;

- }

-

- g_settings_set_int (command_applet->settings, WIDTH_KEY, value);

-}

-

-/* Show the preferences dialog */

-static void

-command_settings_callback (GtkAction *action, CommandApplet *command_applet)

-{

- GtkDialog *dialog;

- GtkBuilder *builder;

-

- builder = gtk_builder_new_from_resource ("/org/mate/mate-applets/command/command-preferences.ui");

-

- dialog = GET_DIALOG ("preferences_dialog");

-

- g_settings_bind (command_applet->settings, COMMAND_KEY, GET_WIDGET ("command_entry"), "text", G_SETTINGS_BIND_GET_NO_CHANGES);

- g_settings_bind (command_applet->settings, INTERVAL_KEY, GET_WIDGET ("interval_spinbutton"), "value", G_SETTINGS_BIND_GET_NO_CHANGES);

- g_settings_bind (command_applet->settings, WIDTH_KEY, GET_WIDGET ("width_spinbutton"), "value", G_SETTINGS_BIND_GET_NO_CHANGES);

- g_settings_bind (command_applet->settings, SHOW_ICON_KEY, GET_WIDGET ("show_icon_check"), "active", G_SETTINGS_BIND_DEFAULT);

-

- /* signals */

- gtk_builder_add_callback_symbols (builder,

- "on_command_entry_focus_out_event", G_CALLBACK (command_text_changed),

- "on_interval_spinbutton_value_changed", G_CALLBACK (interval_value_changed),

- "on_width_spinbutton_value_changed", G_CALLBACK (width_value_changed),

- NULL);

- gtk_builder_connect_signals (builder, command_applet);

- g_signal_connect (dialog, "response", G_CALLBACK (gtk_widget_destroy), dialog);

-

- g_object_unref (builder);

-

- gtk_widget_show_all (GTK_WIDGET (dialog));

-}

-

-/* GSettings signal callbacks */

-static void

-settings_command_changed (GSettings *settings, gchar *key, CommandApplet *command_applet)

-{

- GError *error = NULL;

- gchar *cmdline;

- gchar **argv;

-

- cmdline = g_settings_get_string (command_applet->settings, COMMAND_KEY);

- if (strlen (cmdline) == 0 || g_strcmp0(command_applet->cmdline, cmdline) == 0)

- return;

-

- if (!g_shell_parse_argv (cmdline, NULL, &argv, &error))

- {

- gtk_label_set_text (command_applet->label, ERROR_OUTPUT);

- g_clear_error (&error);

- return;

- }

- g_strfreev(argv);

-

- if (command_applet->cmdline)

- g_free (command_applet->cmdline);

- command_applet->cmdline = cmdline;

-

- command_execute (command_applet);

-}

-

-static void

-settings_width_changed (GSettings *settings, gchar *key, CommandApplet *command_applet)

-{

- gint width;

-

- width = g_settings_get_int (command_applet->settings, WIDTH_KEY);

-

- if (command_applet->width != width) {

- command_applet->width = width;

- }

-}

-

-static void

-settings_interval_changed (GSettings *settings, gchar *key, CommandApplet *command_applet)

-{

- gint interval;

-

- interval = g_settings_get_int (command_applet->settings, INTERVAL_KEY);

-

- /* minimum interval */

- if (interval < 1)

- interval = 1;

-

- if (command_applet->interval == interval) {

- return;

- }

- command_applet->interval = interval;

-

- command_execute (command_applet);

-}

-

-static void

-process_command_output (CommandApplet *command_applet, gchar *output)

-{

- gtk_widget_set_tooltip_text (GTK_WIDGET (command_applet->label), command_applet->cmdline);

-

- if ((output == NULL) || (output[0] == '\0'))

- {

- gtk_label_set_text (command_applet->label, ERROR_OUTPUT);

- return;

- }

-

- /* check if output is a custom GKeyFile */

- if (g_str_has_prefix (output, "[Command]"))

- {

- GKeyFile *file = g_key_file_new ();

- if (g_key_file_load_from_data (file, output, -1, G_KEY_FILE_NONE, NULL))

- {

- gchar *goutput = g_key_file_get_string (file, GK_COMMAND_GROUP, GK_COMMAND_OUTPUT, NULL);

- gchar *icon = g_key_file_get_string (file, GK_COMMAND_GROUP, GK_COMMAND_ICON, NULL);

-

- if (goutput)

- {

- gtk_label_set_use_markup (command_applet->label, TRUE);

- gtk_label_set_markup (command_applet->label, goutput);

- }

-

- if (icon)

- gtk_image_set_from_icon_name (command_applet->image, icon, GTK_ICON_SIZE_LARGE_TOOLBAR);

-

- g_free (goutput);

- g_free (icon);

- }

- else

- gtk_label_set_text (command_applet->label, ERROR_OUTPUT);

-

- g_key_file_free (file);

- }

- else

- {

- /* Remove leading and trailing whitespace */

- g_strstrip (output);

-

- /* check output length */

- if (g_utf8_strlen (output, strlen(output)) > command_applet->width)

- {

- *g_utf8_offset_to_pointer(output, command_applet->width) = '\0';

- }

-

- gtk_label_set_text (command_applet->label, output);

- }

-}

-

-static void command_async_ready_callback (GObject *source_object, GAsyncResult *res, gpointer user_data)

-{

- gchar *output;

- GError *error = NULL;

- CommandApplet *command_applet;

-

- command_applet = (CommandApplet*) user_data;

-

- output = ma_command_run_finish (command_applet->command, res, &error);

- if (error == NULL) {

- process_command_output (command_applet, output);

- } else {

- if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_FAILED)) {

- gtk_label_set_text (command_applet->label, ERROR_OUTPUT);

- }

- g_error_free (error);

- }

- g_free (output);

- command_applet->running = FALSE;

-}

-

-static gboolean timeout_callback (CommandApplet *command_applet)

-{

- /* command is empty, wait for next timer execution */

- if (strlen (command_applet->cmdline) == 0) {

- return G_SOURCE_CONTINUE;

- }

-

- /* command running, wait for next timer execution */

- if (command_applet->running) {

- return G_SOURCE_CONTINUE;

- } else {

- gchar **argv;

- GError *error = NULL;

- if (!g_shell_parse_argv (command_applet->cmdline, NULL, &argv, &error)) {

- gtk_label_set_text (command_applet->label, ERROR_OUTPUT);

- g_clear_error (&error);

- return G_SOURCE_CONTINUE;

- }

- g_strfreev(argv);

- command_execute (command_applet);

- return G_SOURCE_REMOVE;

- }

-}

-

-static gboolean

-command_execute (CommandApplet *command_applet)

-{

- /* stop current timer */

- if (command_applet->timeout_id != 0)

- {

- g_source_remove (command_applet->timeout_id);

- command_applet->timeout_id = 0;

- }

-

- if (command_applet->running) {

- g_cancellable_cancel (command_applet->cancellable);

- }

-

- g_object_set (G_OBJECT(command_applet->command), "command", command_applet->cmdline, NULL);

- ma_command_run_async (command_applet->command,

- command_applet->cancellable,

- command_async_ready_callback,

- command_applet);

- if (!command_applet->running) {

- command_applet->running = TRUE;

- }

-

- if (g_cancellable_is_cancelled (command_applet->cancellable)) {

- g_cancellable_reset (command_applet->cancellable);

- }

-

- command_applet->timeout_id = g_timeout_add_seconds (command_applet->interval,

- (GSourceFunc) timeout_callback,

- command_applet);

- return G_SOURCE_CONTINUE;

-}

-

-static gboolean

-command_applet_fill (MatePanelApplet* applet)

-{

- CommandApplet *command_applet;

-

- g_set_application_name (_("Command Applet"));

- gtk_window_set_default_icon_name (APPLET_ICON);

-

- mate_panel_applet_set_flags (applet, MATE_PANEL_APPLET_EXPAND_MINOR);

- mate_panel_applet_set_background_widget (applet, GTK_WIDGET (applet));

-

- command_applet = g_malloc0(sizeof(CommandApplet));

- command_applet->applet = applet;

- command_applet->settings = mate_panel_applet_settings_new (applet, COMMAND_SCHEMA);

-

- command_applet->interval = g_settings_get_int (command_applet->settings, INTERVAL_KEY);

- command_applet->cmdline = g_settings_get_string (command_applet->settings, COMMAND_KEY);

- command_applet->width = g_settings_get_int (command_applet->settings, WIDTH_KEY);

- command_applet->command = ma_command_new(command_applet->cmdline, NULL);

- command_applet->cancellable = g_cancellable_new ();

-

- command_applet->box = GTK_BOX (gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0));

- command_applet->image = GTK_IMAGE (gtk_image_new_from_icon_name (APPLET_ICON, GTK_ICON_SIZE_LARGE_TOOLBAR));

- command_applet->label = GTK_LABEL (gtk_label_new (ERROR_OUTPUT));

- command_applet->timeout_id = 0;

-

- /* we add the Gtk label into the applet */

- gtk_box_pack_start (command_applet->box,

- GTK_WIDGET (command_applet->image),

- TRUE, TRUE, 0);

- gtk_box_pack_start (command_applet->box,

- GTK_WIDGET (command_applet->label),

- TRUE, TRUE, 0);

-

- gtk_container_add (GTK_CONTAINER (applet),

- GTK_WIDGET (command_applet->box));

-

- gtk_widget_show_all (GTK_WIDGET (command_applet->applet));

-

- g_signal_connect(G_OBJECT (command_applet->applet), "destroy",

- G_CALLBACK (command_applet_destroy),

- command_applet);

-

- /* GSettings signals */

- g_signal_connect(command_applet->settings,

- "changed::" COMMAND_KEY,

- G_CALLBACK (settings_command_changed),

- command_applet);

- g_signal_connect(command_applet->settings,

- "changed::" INTERVAL_KEY,

- G_CALLBACK (settings_interval_changed),

- command_applet);

- g_signal_connect(command_applet->settings,

- "changed::" WIDTH_KEY,

- G_CALLBACK (settings_width_changed),

- command_applet);

- g_settings_bind (command_applet->settings,

- SHOW_ICON_KEY,

- command_applet->image,

- "visible",

- G_SETTINGS_BIND_DEFAULT);

-

- /* set up context menu */

- GtkActionGroup *action_group = gtk_action_group_new ("Command Applet Actions");

- gtk_action_group_set_translation_domain (action_group, GETTEXT_PACKAGE);

- gtk_action_group_add_actions (action_group, applet_menu_actions,

- G_N_ELEMENTS (applet_menu_actions), command_applet);

- mate_panel_applet_setup_menu (command_applet->applet, ui, action_group);

-

- /* first command execution */

- command_execute (command_applet);

- return TRUE;

-}

-

-/* this function, called by mate-panel, will create the applet */

-static gboolean

-command_factory (MatePanelApplet* applet, const char* iid, gpointer data)

-{

- gboolean retval = FALSE;

-

- if (!g_strcmp0 (iid, "CommandApplet"))

- retval = command_applet_fill (applet);

-

- return retval;

-}

-

-/* needed by mate-panel applet library */

-MATE_PANEL_APPLET_OUT_PROCESS_FACTORY("CommandAppletFactory",

- PANEL_TYPE_APPLET,

- "Command applet",

- command_factory,

- NULL)