[geary/mjog/598-sent-email-sound: 6/6] Plugin: Add new sent-sound plugin

[Michael Gratton <mjog src gnome org>]

commit 8c31185d1c44648dd00a0a55b0d5bee267eb04b3
Author: Michael Gratton <mike vee net>
Date:   Sat Mar 21 16:52:30 2020 +1100

    Plugin: Add new sent-sound plugin
    
    Optional plugin to play the sent-mail sound from the desktop's system
    sound theme when an email is sent.
    
    Fixes #598

 meson.build                                       |  1 +
 src/client/plugin/meson.build                     |  1 +
 src/client/plugin/sent-sound/meson.build          | 29 ++++++++++++
 src/client/plugin/sent-sound/sent-sound.plugin.in |  4 ++
 src/client/plugin/sent-sound/sent-sound.vala      | 55 +++++++++++++++++++++++
 5 files changed, 90 insertions(+)
---
diff --git a/meson.build b/meson.build
index 84fe0710..6a5bb77d 100644
--- a/meson.build
+++ b/meson.build
@@ -79,6 +79,7 @@ gdk = dependency('gdk-3.0', version: '>=' + target_gtk)
 gee = dependency('gee-0.8', version: '>= 0.8.5')
 gio = dependency('gio-2.0', version: '>=' + target_glib)
 goa = dependency('goa-1.0')
+gsound = dependency('gsound')
 gspell = dependency('gspell-1')
 gthread = dependency('gthread-2.0', version: '>=' + target_glib)
 iso_codes = dependency('iso-codes')
diff --git a/src/client/plugin/meson.build b/src/client/plugin/meson.build
index a4198c6a..ca3300d5 100644
--- a/src/client/plugin/meson.build
+++ b/src/client/plugin/meson.build
@@ -26,3 +26,4 @@ subdir('desktop-notifications')
 subdir('folder-highlight')
 subdir('messaging-menu')
 subdir('notification-badge')
+subdir('sent-sound')
diff --git a/src/client/plugin/sent-sound/meson.build b/src/client/plugin/sent-sound/meson.build
new file mode 100644
index 00000000..305c445d
--- /dev/null
+++ b/src/client/plugin/sent-sound/meson.build
@@ -0,0 +1,29 @@
+
+plugin_name = 'sent-sound'
+
+send_sound_dependencies = plugin_dependencies
+send_sound_dependencies += gsound
+
+plugin_src = join_paths(plugin_name + '.vala')
+plugin_data = join_paths(plugin_name + '.plugin')
+plugin_dest = join_paths(plugins_dir, plugin_name)
+
+shared_module(
+  plugin_name,
+  sources: plugin_src,
+  dependencies: send_sound_dependencies,
+  include_directories: config_h_dir,
+  vala_args: geary_vala_args,
+  c_args: plugin_c_args,
+  install: true,
+  install_dir: plugin_dest
+)
+
+i18n.merge_file(
+  input: plugin_data + '.in',
+  output: plugin_data,
+  type: 'desktop',
+  po_dir: po_dir,
+  install: true,
+  install_dir: plugin_dest
+)
diff --git a/src/client/plugin/sent-sound/sent-sound.plugin.in 
b/src/client/plugin/sent-sound/sent-sound.plugin.in
new file mode 100644
index 00000000..d692d2e5
--- /dev/null
+++ b/src/client/plugin/sent-sound/sent-sound.plugin.in
@@ -0,0 +1,4 @@
+[Plugin]
+Module=sent-sound
+Name=Sent Sound
+Description=Plays the desktop sent-mail sound when an email is sent
diff --git a/src/client/plugin/sent-sound/sent-sound.vala b/src/client/plugin/sent-sound/sent-sound.vala
new file mode 100644
index 00000000..a986b348
--- /dev/null
+++ b/src/client/plugin/sent-sound/sent-sound.vala
@@ -0,0 +1,55 @@
+/*
+ * Copyright © 2020 Michael Gratton <mike vee net>.
+ *
+ * This software is licensed under the GNU Lesser General Public License
+ * (version 2.1 or later). See the COPYING file in this distribution.
+ */
+
+[ModuleInit]
+public void peas_register_types(TypeModule module) {
+    Peas.ObjectModule obj = module as Peas.ObjectModule;
+    obj.register_extension_type(
+        typeof(Plugin.PluginBase),
+        typeof(Plugin.SentSound)
+    );
+}
+
+/** Plays the desktop sent-mail sound when an email is sent. */
+public class Plugin.SentSound : PluginBase, NotificationExtension {
+
+
+    public NotificationContext notifications {
+        get; set construct;
+    }
+
+
+    private GSound.Context? context = null;
+    private EmailStore? store = null;
+
+
+    public override async void activate() throws GLib.Error {
+        this.context = new GSound.Context();
+        this.context.init();
+
+        this.store = yield this.notifications.get_email();
+        this.store.email_sent.connect(on_sent);
+    }
+
+    public override async void deactivate(bool is_shutdown) throws GLib.Error {
+        this.store.email_sent.disconnect(on_sent);
+        this.store = null;
+
+        this.context = null;
+    }
+
+    private void on_sent() {
+        try {
+            this.context.play_simple(
+                null, GSound.Attribute.EVENT_ID, "message-sent-email"
+            );
+        } catch (GLib.Error err) {
+            warning("Failed to play sent mail sound: %s", err.message);
+        }
+    }
+
+}