[evolution-data-server] Calendar: Make it possible to assign email address to On This Computer sources

[Milan Crha <mcrha src gnome org>]

commit 613104b9d5b39db12a95457ff36415c24db41cdf
Author: Milan Crha <mcrha redhat com>
Date:   Fri Oct 30 09:02:39 2020 +0100

    Calendar: Make it possible to assign email address to On This Computer sources
    
    This email address can be used as a default organizer or an email reminder
    address.

 src/calendar/backends/file/e-cal-backend-file.c |   9 +-
 src/libedataserver/e-source-local.c             | 109 ++++++++++++++++++++++++
 src/libedataserver/e-source-local.h             |   4 +
 3 files changed, 118 insertions(+), 4 deletions(-)
---
diff --git a/src/calendar/backends/file/e-cal-backend-file.c b/src/calendar/backends/file/e-cal-backend-file.c
index af10cb478..8134f360e 100644
--- a/src/calendar/backends/file/e-cal-backend-file.c
+++ b/src/calendar/backends/file/e-cal-backend-file.c
@@ -471,10 +471,11 @@ e_cal_backend_file_get_backend_property (ECalBackend *backend,
 
        } else if (g_str_equal (prop_name, E_CAL_BACKEND_PROPERTY_CAL_EMAIL_ADDRESS) ||
                   g_str_equal (prop_name, E_CAL_BACKEND_PROPERTY_ALARM_EMAIL_ADDRESS)) {
-               /* A file backend has no particular email address associated
-                * with it (although that would be a useful feature some day).
-                */
-               return NULL;
+               ESourceLocal *local_extension;
+
+               local_extension = e_source_get_extension (e_backend_get_source (E_BACKEND (backend)), 
E_SOURCE_EXTENSION_LOCAL_BACKEND);
+
+               return e_source_local_dup_email_address (local_extension);
 
        } else if (g_str_equal (prop_name, E_CAL_BACKEND_PROPERTY_DEFAULT_OBJECT)) {
                ECalComponent *comp;
diff --git a/src/libedataserver/e-source-local.c b/src/libedataserver/e-source-local.c
index 67e50bb62..90fa2accb 100644
--- a/src/libedataserver/e-source-local.c
+++ b/src/libedataserver/e-source-local.c
@@ -22,11 +22,13 @@
 struct _ESourceLocalPrivate {
        GFile *custom_file;
        gboolean writable;
+       gchar *email_address;
 };
 
 enum {
        PROP_0,
        PROP_CUSTOM_FILE,
+       PROP_EMAIL_ADDRESS,
        PROP_WRITABLE
 };
 
@@ -48,6 +50,12 @@ source_local_set_property (GObject *object,
                                g_value_get_object (value));
                        return;
 
+               case PROP_EMAIL_ADDRESS:
+                       e_source_local_set_email_address (
+                               E_SOURCE_LOCAL (object),
+                               g_value_get_string (value));
+                       return;
+
                case PROP_WRITABLE:
                        e_source_local_set_writable (
                                E_SOURCE_LOCAL (object),
@@ -72,6 +80,13 @@ source_local_get_property (GObject *object,
                                E_SOURCE_LOCAL (object)));
                        return;
 
+               case PROP_EMAIL_ADDRESS:
+                       g_value_take_string (
+                               value,
+                               e_source_local_dup_email_address (
+                               E_SOURCE_LOCAL (object)));
+                       return;
+
                case PROP_WRITABLE:
                        g_value_set_boolean (
                                value,
@@ -126,6 +141,19 @@ e_source_local_class_init (ESourceLocalClass *class)
                        G_PARAM_EXPLICIT_NOTIFY |
                        E_SOURCE_PARAM_SETTING));
 
+       g_object_class_install_property (
+               object_class,
+               PROP_EMAIL_ADDRESS,
+               g_param_spec_string (
+                       "email-address",
+                       "Email Address",
+                       "Email address associated with the calendar",
+                       NULL,
+                       G_PARAM_READWRITE |
+                       G_PARAM_CONSTRUCT |
+                       G_PARAM_EXPLICIT_NOTIFY |
+                       E_SOURCE_PARAM_SETTING));
+
        g_object_class_install_property (
                object_class,
                PROP_WRITABLE,
@@ -275,3 +303,84 @@ e_source_local_set_writable (ESourceLocal *extension,
        if (changed)
                g_object_notify (G_OBJECT (extension), "writable");
 }
+
+/**
+ * e_source_local_get_email_address:
+ * @extension: an #ESourceLocal
+ *
+ * Returns: (nullable): the email address for @extension
+ *
+ * Since: 3.40
+ **/
+const gchar *
+e_source_local_get_email_address (ESourceLocal *extension)
+{
+       g_return_val_if_fail (E_IS_SOURCE_LOCAL (extension), NULL);
+
+       return extension->priv->email_address;
+}
+
+/**
+ * e_source_local_dup_email_address:
+ * @extension: an #ESourceLocal
+ *
+ * Thread-safe variation of e_source_lcoal_get_email_address().
+ * Use this function when accessing @extension from multiple threads.
+ *
+ * The returned string should be freed with g_free() when no longer needed.
+ *
+ * Returns: (transfer full): a newly-allocated copy of #ESourceLocal:email-address
+ *
+ * Since: 3.40
+ **/
+gchar *
+e_source_local_dup_email_address (ESourceLocal *extension)
+{
+       const gchar *protected;
+       gchar *duplicate;
+
+       g_return_val_if_fail (E_IS_SOURCE_LOCAL (extension), NULL);
+
+       e_source_extension_property_lock (E_SOURCE_EXTENSION (extension));
+
+       protected = e_source_local_get_email_address (extension);
+       duplicate = g_strdup (protected);
+
+       e_source_extension_property_unlock (E_SOURCE_EXTENSION (extension));
+
+       return duplicate;
+}
+
+/**
+ * e_source_local_set_email_address:
+ * @extension: an #ESourceLocal
+ * @email_address: (nullable): an email address, or %NULL
+ *
+ * Sets the email address for @extension.
+ *
+ * The internal copy of @email_address is automatically stripped of leading
+ * and trailing whitespace. If the resulting string is empty, %NULL is set
+ * instead.
+ *
+ * Since: 3.40
+ **/
+void
+e_source_local_set_email_address (ESourceLocal *extension,
+                                 const gchar *email_address)
+{
+       g_return_if_fail (E_IS_SOURCE_LOCAL (extension));
+
+       e_source_extension_property_lock (E_SOURCE_EXTENSION (extension));
+
+       if (e_util_strcmp0 (extension->priv->email_address, email_address) == 0) {
+               e_source_extension_property_unlock (E_SOURCE_EXTENSION (extension));
+               return;
+       }
+
+       g_free (extension->priv->email_address);
+       extension->priv->email_address = e_util_strdup_strip (email_address);
+
+       e_source_extension_property_unlock (E_SOURCE_EXTENSION (extension));
+
+       g_object_notify (G_OBJECT (extension), "email-address");
+}
diff --git a/src/libedataserver/e-source-local.h b/src/libedataserver/e-source-local.h
index 65847ef61..4697701fb 100644
--- a/src/libedataserver/e-source-local.h
+++ b/src/libedataserver/e-source-local.h
@@ -77,6 +77,10 @@ void         e_source_local_set_custom_file  (ESourceLocal *extension,
 gboolean       e_source_local_get_writable     (ESourceLocal *extension);
 void           e_source_local_set_writable     (ESourceLocal *extension,
                                                 gboolean writable);
+const gchar *  e_source_local_get_email_address(ESourceLocal *extension);
+gchar *                e_source_local_dup_email_address(ESourceLocal *extension);
+void           e_source_local_set_email_address(ESourceLocal *extension,
+                                                const gchar *email_address);
 G_END_DECLS
 
 #endif /* E_SOURCE_LOCAL_H */