[folks] Add the PersonaStore:can-alias-personas property.

[Travis Reitter <treitter src gnome org>]

commit 6d52e4eddefff01ff97faf548a698b56f5f55311
Author: Travis Reitter <travis reitter collabora co uk>
Date:   Mon Oct 11 10:58:24 2010 -0700

    Add the PersonaStore:can-alias-personas property.
    
    Helps bgo#626179.

 backends/key-file/kf-persona-store.vala         |   12 ++++
 backends/telepathy/lib/tp-lowlevel.c            |   74 +++++++++++++++++++++++
 backends/telepathy/lib/tp-lowlevel.h            |   13 ++++
 backends/telepathy/lib/tpf-persona-store.vala   |   36 +++++++++++
 folks/persona-store.vala                        |   11 ++++
 tests/telepathy/persona-store-capabilities.vala |   22 +++++++
 6 files changed, 168 insertions(+), 0 deletions(-)
---
diff --git a/backends/key-file/kf-persona-store.vala b/backends/key-file/kf-persona-store.vala
index 008e6ba..ee4fc68 100644
--- a/backends/key-file/kf-persona-store.vala
+++ b/backends/key-file/kf-persona-store.vala
@@ -66,6 +66,18 @@ public class Folks.Backends.Kf.PersonaStore : Folks.PersonaStore
     }
 
   /**
+   * Whether this PersonaStore can set the alias of { link Folks.Persona}s.
+   *
+   * See { link Folks.PersonaStore.can_alias_personas}.
+   *
+   * @since 0.3.1
+   */
+  public override MaybeBool can_alias_personas
+    {
+      get { return MaybeBool.TRUE; }
+    }
+
+  /**
    * Whether this PersonaStore can remove { link Folks.Persona}s.
    *
    * See { link Folks.PersonaStore.can_remove_personas}.
diff --git a/backends/telepathy/lib/tp-lowlevel.c b/backends/telepathy/lib/tp-lowlevel.c
index 4ab461d..327fafa 100644
--- a/backends/telepathy/lib/tp-lowlevel.c
+++ b/backends/telepathy/lib/tp-lowlevel.c
@@ -131,6 +131,80 @@ folks_tp_lowlevel_connection_open_contact_list_channel_finish (
 }
 
 static void
+connection_get_alias_flags_cb (TpConnection *conn,
+    guint flags,
+    const GError *error,
+    gpointer user_data,
+    GObject *weak_object)
+{
+  GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (user_data);
+
+  if (error != NULL)
+    {
+      g_simple_async_result_set_from_error (simple, error);
+    }
+  else
+    {
+      g_simple_async_result_set_op_res_gpointer (simple,
+          GUINT_TO_POINTER (flags), NULL);
+    }
+
+  g_simple_async_result_complete (simple);
+  g_object_unref (simple);
+}
+
+void
+folks_tp_lowlevel_connection_get_alias_flags_async (
+    FolksTpLowlevel *tp_lowlevel,
+    TpConnection *conn,
+    GAsyncReadyCallback callback,
+    gpointer user_data)
+{
+  GSimpleAsyncResult *result;
+
+  result = g_simple_async_result_new (G_OBJECT (conn), callback, user_data,
+      folks_tp_lowlevel_connection_get_alias_flags_finish);
+
+  tp_cli_connection_interface_aliasing_call_get_alias_flags (conn, -1,
+      connection_get_alias_flags_cb, result, NULL, G_OBJECT (conn));
+}
+
+/**
+ * folks_tp_lowlevel_connection_get_alias_flags_finish:
+ * @lowlevel: a #FolksTpLowlevel
+ * @result: a #GAsyncResult
+ * @error: return location for a #GError, or %NULL
+ *
+ * Determine the alias-related capabilities of the #TpConnection.
+ *
+ * Returns: the #TpConnectionAliasFlags
+ */
+TpConnectionAliasFlags
+folks_tp_lowlevel_connection_get_alias_flags_finish (
+    FolksTpLowlevel *lowlevel,
+    GAsyncResult *result,
+    GError **error)
+{
+  GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
+  TpConnection *conn;
+
+  g_return_val_if_fail (G_IS_SIMPLE_ASYNC_RESULT (simple), FALSE);
+
+  conn = TP_CONNECTION (g_async_result_get_source_object (result));
+  g_return_val_if_fail (TP_IS_CONNECTION (conn), FALSE);
+
+  if (g_simple_async_result_propagate_error (simple, error))
+    return 0;
+
+  g_return_val_if_fail (g_simple_async_result_is_valid (result,
+      G_OBJECT (conn), folks_tp_lowlevel_connection_get_alias_flags_finish),
+      0);
+
+  return (TpConnectionAliasFlags) (g_simple_async_result_get_op_res_gpointer (
+      G_SIMPLE_ASYNC_RESULT (result)));
+}
+
+static void
 get_contacts_by_handle_cb (TpConnection *conn,
     guint n_contacts,
     TpContact * const *contacts,
diff --git a/backends/telepathy/lib/tp-lowlevel.h b/backends/telepathy/lib/tp-lowlevel.h
index ecac64e..d0c7222 100644
--- a/backends/telepathy/lib/tp-lowlevel.h
+++ b/backends/telepathy/lib/tp-lowlevel.h
@@ -116,6 +116,19 @@ folks_tp_lowlevel_connection_open_contact_list_channel_finish (
     GError **error);
 
 void
+folks_tp_lowlevel_connection_get_alias_flags_async (
+    FolksTpLowlevel *tp_lowlevel,
+    TpConnection *conn,
+    GAsyncReadyCallback callback,
+    gpointer user_data);
+
+TpConnectionAliasFlags
+folks_tp_lowlevel_connection_get_alias_flags_finish (
+    FolksTpLowlevel *lowlevel,
+    GAsyncResult *result,
+    GError **error);
+
+void
 folks_tp_lowlevel_connection_get_contacts_by_handle_async (
     FolksTpLowlevel *tp_lowlevel,
     TpConnection *conn,
diff --git a/backends/telepathy/lib/tpf-persona-store.vala b/backends/telepathy/lib/tpf-persona-store.vala
index ef853d4..5b1ae44 100644
--- a/backends/telepathy/lib/tpf-persona-store.vala
+++ b/backends/telepathy/lib/tpf-persona-store.vala
@@ -66,6 +66,7 @@ public class Tpf.PersonaStore : Folks.PersonaStore
   private Logger logger;
   private Contact self_contact;
   private MaybeBool _can_add_personas = MaybeBool.UNSET;
+  private MaybeBool _can_alias_personas = MaybeBool.UNSET;
   private MaybeBool _can_remove_personas = MaybeBool.UNSET;
   private bool _is_prepared = false;
 
@@ -116,6 +117,18 @@ public class Tpf.PersonaStore : Folks.PersonaStore
     }
 
   /**
+   * Whether this PersonaStore can set the alias of { link Folks.Persona}s.
+   *
+   * See { link Folks.PersonaStore.can_alias_personas}.
+   *
+   * @since 0.3.1
+   */
+  public override MaybeBool can_alias_personas
+    {
+      get { return this._can_alias_personas; }
+    }
+
+  /**
    * Whether this PersonaStore can remove { link Folks.Persona}s.
    *
    * See { link Folks.PersonaStore.can_remove_personas}.
@@ -449,6 +462,29 @@ public class Tpf.PersonaStore : Folks.PersonaStore
       this.ll.connection_connect_to_new_group_channels (c,
           this.new_group_channels_cb);
 
+      this.ll.connection_get_alias_flags_async.begin (c, (s2, res) =>
+          {
+            var new_can_alias = MaybeBool.FALSE;
+            try
+              {
+                var flags = this.ll.connection_get_alias_flags_async.end (res);
+                if ((flags &
+                    ConnectionAliasFlags.CONNECTION_ALIAS_FLAG_USER_SET) > 0)
+                  {
+                    new_can_alias = MaybeBool.TRUE;
+                  }
+              }
+            catch (GLib.Error e)
+              {
+                GLib.warning ("failed to determine whether we can set " +
+                  "aliases on Telepathy account %s: %s",
+                  this.display_name, e.message);
+              }
+
+            this._can_alias_personas = new_can_alias;
+            this.notify_property ("can-alias-personas");
+          });
+
       this.add_standard_channel (c, "publish");
       this.add_standard_channel (c, "stored");
       this.add_standard_channel (c, "subscribe");
diff --git a/folks/persona-store.vala b/folks/persona-store.vala
index ad67c27..15e7db5 100644
--- a/folks/persona-store.vala
+++ b/folks/persona-store.vala
@@ -183,6 +183,17 @@ public abstract class Folks.PersonaStore : Object
   public abstract MaybeBool can_add_personas { get; default = MaybeBool.UNSET; }
 
   /**
+   * Whether this { link PersonaStore} can set the alias of { link Persona}s.
+   *
+   * @since 0.3.1
+   */
+  public abstract MaybeBool can_alias_personas
+    {
+      get;
+      default = MaybeBool.UNSET;
+    }
+
+  /**
    * Whether this { link PersonaStore} can remove { link Persona}s.
    *
    * @since 0.3.1
diff --git a/tests/telepathy/persona-store-capabilities.vala b/tests/telepathy/persona-store-capabilities.vala
index cd2a5f8..8a39e26 100644
--- a/tests/telepathy/persona-store-capabilities.vala
+++ b/tests/telepathy/persona-store-capabilities.vala
@@ -193,6 +193,12 @@ public class PersonaStoreCapabilitiesTests : Folks.TestCase
               else
                 store.notify["can-remove-personas"].connect (
                     this.can_remove_personas_cb);
+
+              if (store.can_alias_personas != MaybeBool.UNSET)
+                can_alias_personas_cb (store, null);
+              else
+                store.notify["can-alias-personas"].connect (
+                    this.can_alias_personas_cb);
             }
           catch (GLib.Error e)
             {
@@ -233,6 +239,22 @@ public class PersonaStoreCapabilitiesTests : Folks.TestCase
               this.can_remove_personas_cb);
         }
     }
+
+  private void can_alias_personas_cb (GLib.Object s, ParamSpec? p)
+    {
+      assert (s is Tpf.PersonaStore);
+      var store = (Tpf.PersonaStore) s;
+
+      if (store.can_alias_personas != MaybeBool.UNSET)
+        {
+          assert (store.can_alias_personas == MaybeBool.TRUE);
+
+          this.group_flags_received.add ("can-alias-personas");
+
+          store.notify["can-alias-personas"].disconnect (
+              this.can_alias_personas_cb);
+        }
+    }
 }
 
 public int main (string[] args)