Add new command applet

1 files changed, 263 insertions, 0 deletions

diff --git a/command/command.c b/command/command.c
new file mode 100644
index 00000000..03bcf93f
--- /dev/null
+++ b/command/command.c
@@ -0,0 +1,263 @@
+/* command.c:
+ *
+ * Copyright (C) 2013-2014 Stefano Karapetsas
+ *
+ *  This file is part of MATE Applets.
+ *
+ *  MATE Applets 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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  MATE Applets 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 MATE Applets.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *      Stefano Karapetsas <[email protected]>
+ */
+
+#include <config.h>
+
+#include <glib.h>
+#include <glib/gi18n.h>
+#include <gio/gio.h>
+#include <gtk/gtk.h>
+
+#include <mate-panel-applet.h>
+#include <mate-panel-applet-gsettings.h>
+
+#define COMMAND_SCHEMA "org.mate.panel.applet.command"
+#define COMMAND_KEY    "command"
+#define INTERVAL_KEY   "interval"
+#define SHOW_ICON_KEY  "show-icon"
+
+typedef struct
+{
+    MatePanelApplet   *applet;
+    GSettings         *settings;
+    GtkLabel          *label;
+    GtkImage          *image;
+    GtkHBox           *hbox;
+    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 const GtkActionEntry applet_menu_actions [] = {
+    { "Properties", GTK_STOCK_PROPERTIES, NULL, NULL, NULL, G_CALLBACK (command_settings_callback) },
+    { "About", GTK_STOCK_ABOUT, NULL, NULL, NULL, G_CALLBACK (command_about_callback) }
+};
+
+static char *ui = "<menuitem name='Item 1' action='Properties' />"
+                  "<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;
+    }
+
+    g_object_unref (command_applet->settings);
+}
+
+static void
+command_about_callback (GtkAction *action, CommandApplet *command_applet)
+{
+    const char* authors[] = { "Stefano Karapetsas <[email protected]>", NULL };
+
+    gtk_show_about_dialog(NULL,
+                          "version", VERSION,
+                          "copyright", "Copyright © 2013-2014 Stefano Karapetsas",
+                          "authors", authors,
+                          "comments", _("Shows the output of a command"),
+                          "translator-credits", _("translator-credits"),
+                          "logo-icon-name", "terminal",
+    NULL );
+}
+
+static void
+command_settings_callback (GtkAction *action, CommandApplet *command_applet)
+{
+    GtkDialog *dialog;
+    GtkTable *table;
+    GtkWidget *widget;
+    GtkWidget *command;
+    GtkWidget *interval;
+    GtkWidget *showicon;
+
+    dialog = GTK_DIALOG (gtk_dialog_new_with_buttons(_("Command Applet Preferences"),
+                                                     NULL,
+                                                     GTK_DIALOG_MODAL,
+                                                     GTK_STOCK_CLOSE,
+                                                     GTK_RESPONSE_CLOSE,
+                                                     NULL));
+    table = gtk_table_new (3, 2, FALSE);
+
+    gtk_window_set_default_size (GTK_WINDOW (dialog), 350, 150);
+
+    widget = gtk_label_new (_("Command:"));
+    gtk_table_attach (table, widget, 1, 2, 0, 1,
+                      GTK_FILL, GTK_FILL,
+                      0, 0);
+
+    command = gtk_entry_new ();
+    gtk_table_attach (table, command, 2, 3, 0, 1,
+                      GTK_EXPAND | GTK_FILL | GTK_SHRINK, GTK_FILL,
+                      0, 0);
+
+    widget = gtk_label_new (_("Interval:"));
+    gtk_table_attach (table, widget, 1, 2, 1, 2,
+                      GTK_FILL, GTK_FILL,
+                      0, 0);
+
+    interval = gtk_spin_button_new_with_range (1.0, 600.0, 1.0);
+    gtk_table_attach (table, interval, 2, 3, 1, 2,
+                      GTK_EXPAND | GTK_FILL | GTK_SHRINK, GTK_FILL,
+                      0, 0);
+
+    showicon = gtk_check_button_new_with_label (_("Show icon"));
+    gtk_table_attach (table, showicon, 2, 3, 3, 4,
+                      GTK_EXPAND | GTK_FILL | GTK_SHRINK, GTK_FILL,
+                      0, 0);
+
+    gtk_box_pack_start_defaults (GTK_BOX (dialog->vbox), table);
+
+    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, SHOW_ICON_KEY, showicon, "active", G_SETTINGS_BIND_DEFAULT);
+
+    gtk_widget_show_all (GTK_WIDGET (dialog));
+}
+
+static gboolean
+command_execute (CommandApplet *command_applet)
+{
+    GError *error = NULL;
+    gchar *command = NULL;
+    gchar *output = NULL;
+    gint interval = 0;
+    gint ret = 0;
+
+    /* FIXME: use GSettings changed event */
+    interval = g_settings_get_int (command_applet->settings, INTERVAL_KEY);
+    command = g_settings_get_string (command_applet->settings, COMMAND_KEY);
+
+    g_return_if_fail (command != NULL);
+    g_return_if_fail (command[0] != 0);
+
+    /* minimum interval */
+    if (interval <= 0)
+        interval = 1;
+
+    if (g_spawn_command_line_sync (command, &output, NULL, &ret, &error))
+    {
+        if ((output != NULL) && (output[0] != 0))
+        {
+            if (g_str_has_suffix (output, "\n")) {
+                output[strlen(output) - 1] = 0;
+            }
+            gtk_label_set_text (command_applet->label, output);
+        }
+        else
+            gtk_label_set_text (command_applet->label, "#");
+    }
+    else
+        gtk_label_set_text (command_applet->label, "#");
+
+    g_free (output);
+    g_free (command);
+
+    /* start timer for next execution */
+    command_applet->timeout_id = g_timeout_add_seconds (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 ("terminal");
+
+    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->hbox = gtk_hbox_new (FALSE, 0);
+    command_applet->image = gtk_image_new_from_icon_name ("terminal", 24);
+    command_applet->label = gtk_label_new ("#");
+    command_applet->timeout_id = 0;
+
+    /* we add the Gtk label into the applet */
+    gtk_box_pack_start (GTK_BOX (command_applet->hbox),
+                        GTK_WIDGET (command_applet->image),
+                        TRUE, TRUE, 0);
+    gtk_box_pack_start (GTK_BOX (command_applet->hbox),
+                        GTK_WIDGET (command_applet->label),
+                        TRUE, TRUE, 0);
+
+    gtk_container_add (GTK_CONTAINER (applet),
+                       GTK_WIDGET (command_applet->hbox));
+
+    gtk_widget_show_all (GTK_WIDGET (command_applet->applet));
+
+    g_settings_bind (command_applet->settings,
+                     SHOW_ICON_KEY,
+                     command_applet->image,
+                     "visible",
+                     G_SETTINGS_BIND_DEFAULT);
+
+    g_signal_connect(G_OBJECT (command_applet->applet), "destroy",
+                     G_CALLBACK (command_applet_destroy),
+                     command_applet);
+
+    /* set up context menu */
+    GtkActionGroup *action_group = gtk_action_group_new ("Command Applet Actions");
+    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)