[libnotify] notify-send: Add support for notification actions and responses

[Marco Trevisan <marcotrevi src gnome org>]

commit 6c707d2dfd01150f12282160f3a0a25b2759b080
Author: Ben Blain <mail servc eu>
Date:   Thu Mar 11 10:32:57 2021 +0000

    notify-send: Add support for notification actions and responses
    
    The activated action name is written to stdout and the notification is closed
    when a valid action has been selected.

 docs/notify-send.xml |  6 ++++++
 tools/notify-send.c  | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 59 insertions(+)
---
diff --git a/docs/notify-send.xml b/docs/notify-send.xml
index 185dbd6..fefbf1a 100644
--- a/docs/notify-send.xml
+++ b/docs/notify-send.xml
@@ -58,6 +58,12 @@
           <para>Show help and exit.</para>
         </listitem>
       </varlistentry>
+      <varlistentry>
+        <term><option>-A</option>, 
<option>--action</option>=[<replaceable>NAME</replaceable>=]<replaceable>Text...</replaceable></term>
+        <listitem>
+          <para>Specifies the actions to display to the user. Implies <option>--wait</option> to wait for 
user input. May be set multiple times. The <replaceable>NAME</replaceable> of the action is output to 
<literal>stdout</literal>. If <replaceable>NAME</replaceable> is not specified, the numerical index of the 
option is used (starting with <literal>1</literal>).</para>
+        </listitem>
+      </varlistentry>
       <varlistentry>
         <term><option>-u</option>, <option>--urgency</option>=<replaceable>LEVEL</replaceable></term>
         <listitem>
diff --git a/tools/notify-send.c b/tools/notify-send.c
index e8dc272..bf31894 100644
--- a/tools/notify-send.c
+++ b/tools/notify-send.c
@@ -128,6 +128,17 @@ handle_closed (NotifyNotification *notify,
         g_main_loop_quit (loop);
 }
 
+static void
+handle_action (NotifyNotification *notify,
+               char               *action,
+               gpointer            user_data)
+{
+        const char *action_name = user_data;
+
+        g_printf ("%s\n", action_name);
+        notify_notification_close (notify, NULL);
+}
+
 static gboolean
 on_wait_timeout (gpointer data)
 {
@@ -147,6 +158,7 @@ main (int argc, char *argv[])
         static char        *icon_str = NULL;
         static char       **n_text = NULL;
         static char       **hints = NULL;
+        static char       **actions = NULL;
         static gboolean     print_id = FALSE;
         static gint         notification_id = 0;
         static gboolean     do_version = FALSE;
@@ -186,6 +198,12 @@ main (int argc, char *argv[])
                 {"wait", 'w', 0, G_OPTION_ARG_NONE, &wait,
                  N_("Wait for the notification to be closed before exiting."),
                  NULL},
+                {"action", 'A', 0, G_OPTION_ARG_FILENAME_ARRAY, &actions,
+                 N_
+                 ("Specifies the actions to display to the user. Implies --wait to wait for user input."
+                 " May be set multiple times. The name of the action is output to stdout. If NAME is "
+                 "not specified, the numerical index of the option is used (starting with 0)."),
+                 N_("[NAME=]Text...")},
                 {"version", 'v', 0, G_OPTION_ARG_NONE, &do_version,
                  N_("Version of the package."),
                  NULL},
@@ -294,6 +312,41 @@ main (int argc, char *argv[])
                 }
         }
 
+        if (actions != NULL) {
+                gint i = 0;
+                char *action = NULL;
+                gchar **spl = NULL;
+
+                while ((action = actions[i++])) {
+                        gchar *name;
+                        const gchar *label;
+
+                        spl = g_strsplit (action, "=", 2);
+
+                        if (g_strv_length (spl) == 1) {
+                                name = g_strdup_printf ("%d", i - 1);
+                                label = g_strstrip (spl[0]);
+                        } else {
+                                name = g_strdup (g_strstrip (spl[0]));
+                                label = g_strstrip (spl[1]);
+                        }
+
+                        if (*label != '\0' && *name != '\0') {
+                                notify_notification_add_action (notify,
+                                                                name,
+                                                                label,
+                                                                handle_action,
+                                                                name,
+                                                                g_free);
+                                wait = TRUE;
+                        }
+
+                        g_strfreev (spl);
+                }
+
+                g_strfreev (actions);
+        }
+
         if (wait) {
                 g_signal_connect (G_OBJECT (notify),
                                   "closed",