/* 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 */ #include #include #include #include #include #include #include #include /* 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" typedef struct { MatePanelApplet *applet; GSettings *settings; GtkLabel *label; GtkImage *image; GtkBox *box; gchar *command; 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 const GtkActionEntry applet_menu_actions [] = { { "Preferences", GTK_STOCK_PROPERTIES, N_("_Preferences"), NULL, NULL, G_CALLBACK (command_settings_callback) }, { "About", GTK_STOCK_ABOUT, N_("_About"), NULL, NULL, G_CALLBACK (command_about_callback) } }; static char *ui = "" ""; 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->command != NULL) { g_free (command_applet->command); command_applet->command = NULL; } 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 ", NULL }; char copyright[] = \ "Copyright \xc2\xa9 2015-2016 MATE developers\n" "Copyright \xc2\xa9 2013-2014 Stefano Karapetsas"; gtk_show_about_dialog(NULL, "version", VERSION, "copyright", copyright, "authors", authors, "comments", _("Shows the output of a command"), "translator-credits", _("translator-credits"), "logo-icon-name", APPLET_ICON, NULL ); } /* Show the preferences dialog */ static void command_settings_callback (GtkAction *action, CommandApplet *command_applet) { GtkDialog *dialog; GtkGrid *grid; GtkWidget *widget; GtkWidget *command; GtkWidget *interval; GtkWidget *width; GtkWidget *showicon; dialog = GTK_DIALOG (gtk_dialog_new_with_buttons(_("Command Applet Preferences"), NULL, GTK_DIALOG_MODAL, GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE, NULL)); grid = GTK_GRID (gtk_grid_new ()); gtk_grid_set_row_spacing (grid, 12); gtk_grid_set_column_spacing (grid, 12); gtk_window_set_default_size (GTK_WINDOW (dialog), 350, 150); gtk_container_set_border_width (GTK_CONTAINER (dialog), 10); widget = gtk_label_new (_("Command:")); #if GTK_CHECK_VERSION (3, 16, 0) gtk_label_set_xalign (GTK_LABEL (widget), 1.0); gtk_label_set_yalign (GTK_LABEL (widget), 0.5); #else gtk_misc_set_alignment (GTK_MISC (widget), 1.0, 0.5); #endif gtk_grid_attach (grid, widget, 1, 0, 1, 1); command = gtk_entry_new (); gtk_grid_attach (grid, command, 2, 0, 1, 1); widget = gtk_label_new (_("Interval (seconds):")); #if GTK_CHECK_VERSION (3, 16, 0) gtk_label_set_xalign (GTK_LABEL (widget), 1.0); gtk_label_set_yalign (GTK_LABEL (widget), 0.5); #else gtk_misc_set_alignment (GTK_MISC (widget), 1.0, 0.5); #endif gtk_grid_attach (grid, widget, 1, 1, 1, 1); interval = gtk_spin_button_new_with_range (1.0, 600.0, 1.0); gtk_grid_attach (grid, interval, 2, 1, 1, 1); widget = gtk_label_new (_("Maximum width (chars):")); #if GTK_CHECK_VERSION (3, 16, 0) gtk_label_set_xalign (GTK_LABEL (widget), 1.0); gtk_label_set_yalign (GTK_LABEL (widget), 0.5); #else gtk_misc_set_alignment (GTK_MISC (widget), 1.0, 0.5); #endif gtk_grid_attach (grid, widget, 1, 2, 1, 1); width = gtk_spin_button_new_with_range(1.0, 100.0, 1.0); gtk_grid_attach (grid, width, 2, 2, 1, 1); showicon = gtk_check_button_new_with_label (_("Show icon")); gtk_grid_attach (grid, showicon, 2, 3, 1, 1); gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (dialog)), GTK_WIDGET (grid), TRUE, TRUE, 0); g_signal_connect (dialog, "response", G_CALLBACK (gtk_widget_destroy), dialog); /* use g_settings_bind to manage settings */ g_settings_bind (command_applet->settings, COMMAND_KEY, command, "text", G_SETTINGS_BIND_DEFAULT); g_settings_bind (command_applet->settings, INTERVAL_KEY, interval, "value", G_SETTINGS_BIND_DEFAULT); g_settings_bind (command_applet->settings, WIDTH_KEY, width, "value", G_SETTINGS_BIND_DEFAULT); g_settings_bind (command_applet->settings, SHOW_ICON_KEY, showicon, "active", G_SETTINGS_BIND_DEFAULT); gtk_widget_show_all (GTK_WIDGET (dialog)); } /* GSettings signal callbacks */ static void settings_command_changed (GSettings *settings, gchar *key, CommandApplet *command_applet) { gchar *command; command = g_settings_get_string (command_applet->settings, COMMAND_KEY); if (command_applet->command) g_free (command_applet->command); if (command != NULL && command[0] != 0) command_applet->command = command; else command_applet->command = g_strdup (""); } static void settings_width_changed (GSettings *settings, gchar *key, CommandApplet *command_applet) { gint width; width = g_settings_get_int (command_applet->settings, WIDTH_KEY); command_applet->width = width; /* execute command to start new timer */ command_execute (command_applet); } 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; command_applet->interval = interval; /* stop current timer */ if (command_applet->timeout_id != 0) { g_source_remove (command_applet->timeout_id); command_applet->timeout_id = 0; } /* execute command to start new timer */ 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->command); 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, 24); 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 (strlen (output) > command_applet->width) { output[command_applet->width] = '\0'; } gtk_label_set_text (command_applet->label, output); } } static gboolean command_execute (CommandApplet *command_applet) { GError *error = NULL; gchar *output = NULL; gint ret = 0; if (g_spawn_command_line_sync (command_applet->command, &output, NULL, &ret, &error)) { process_command_output (command_applet, output); } else gtk_label_set_text (command_applet->label, ERROR_OUTPUT); g_free (output); /* start timer for next execution */ command_applet->timeout_id = g_timeout_add_seconds (command_applet->interval, (GSourceFunc) command_execute, command_applet); return FALSE; } 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->command = g_settings_get_string (command_applet->settings, COMMAND_KEY); command_applet->width = g_settings_get_int (command_applet->settings, WIDTH_KEY); 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, 24)); 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)