Consolidate base utility libraries into libeutil.

Evolution consists of entirely too many small utility libraries, which
increases linking and loading time, places a burden on higher layers of
the application (e.g. modules) which has to remember to link to all the
small in-tree utility libraries, and makes it difficult to generate API
documentation for these utility libraries in one Gtk-Doc module.

Merge the following utility libraries under the umbrella of libeutil,
and enforce a single-include policy on libeutil so we can reorganize
the files as desired without disrupting its pseudo-public API.

   libemail-utils/libemail-utils.la
   libevolution-utils/libevolution-utils.la
   filter/libfilter.la
   widgets/e-timezone-dialog/libetimezonedialog.la
   widgets/menus/libmenus.la
   widgets/misc/libemiscwidgets.la
   widgets/table/libetable.la
   widgets/text/libetext.la

This also merges libedataserverui from the Evolution-Data-Server module,
since Evolution is its only consumer nowadays, and I'd like to make some
improvements to those APIs without concern for backward-compatibility.

And finally, start a Gtk-Doc module for libeutil.  It's going to be a
project just getting all the symbols _listed_ much less _documented_.
But the skeletal structure is in place and I'm off to a good start.

1 files changed, 140 insertions, 0 deletions

diff --git a/e-util/e-source-config-backend.c b/e-util/e-source-config-backend.c
new file mode 100644
index 0000000000..e6802f99ae
--- /dev/null
+++ b/e-util/e-source-config-backend.c
@@ -0,0 +1,140 @@
+/*
+ * e-source-config-backend.c
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) version 3.
+ *
+ * This program 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#include "e-source-config-backend.h"
+
+G_DEFINE_TYPE (
+	ESourceConfigBackend,
+	e_source_config_backend,
+	E_TYPE_EXTENSION)
+
+static gboolean
+source_config_backend_allow_creation (ESourceConfigBackend *backend)
+{
+	return TRUE;
+}
+
+static void
+source_config_backend_insert_widgets (ESourceConfigBackend *backend,
+                                      ESource *scratch_source)
+{
+	/* does nothing */
+}
+
+static gboolean
+source_config_backend_check_complete (ESourceConfigBackend *backend,
+                                      ESource *scratch_source)
+{
+	return TRUE;
+}
+
+static void
+source_config_backend_commit_changes (ESourceConfigBackend *backend,
+                                      ESource *scratch_source)
+{
+	/* does nothing */
+}
+
+static void
+e_source_config_backend_class_init (ESourceConfigBackendClass *class)
+{
+	EExtensionClass *extension_class;
+
+	extension_class = E_EXTENSION_CLASS (class);
+	extension_class->extensible_type = E_TYPE_SOURCE_CONFIG;
+
+	class->allow_creation = source_config_backend_allow_creation;
+	class->insert_widgets = source_config_backend_insert_widgets;
+	class->check_complete = source_config_backend_check_complete;
+	class->commit_changes = source_config_backend_commit_changes;
+}
+
+static void
+e_source_config_backend_init (ESourceConfigBackend *backend)
+{
+}
+
+ESourceConfig *
+e_source_config_backend_get_config (ESourceConfigBackend *backend)
+{
+	EExtensible *extensible;
+
+	g_return_val_if_fail (E_IS_SOURCE_CONFIG_BACKEND (backend), NULL);
+
+	extensible = e_extension_get_extensible (E_EXTENSION (backend));
+
+	return E_SOURCE_CONFIG (extensible);
+}
+
+gboolean
+e_source_config_backend_allow_creation (ESourceConfigBackend *backend)
+{
+	ESourceConfigBackendClass *class;
+
+	g_return_val_if_fail (E_IS_SOURCE_CONFIG_BACKEND (backend), FALSE);
+
+	class = E_SOURCE_CONFIG_BACKEND_GET_CLASS (backend);
+	g_return_val_if_fail (class->allow_creation != NULL, FALSE);
+
+	return class->allow_creation (backend);
+}
+
+void
+e_source_config_backend_insert_widgets (ESourceConfigBackend *backend,
+                                        ESource *scratch_source)
+{
+	ESourceConfigBackendClass *class;
+
+	g_return_if_fail (E_IS_SOURCE_CONFIG_BACKEND (backend));
+	g_return_if_fail (E_IS_SOURCE (scratch_source));
+
+	class = E_SOURCE_CONFIG_BACKEND_GET_CLASS (backend);
+	g_return_if_fail (class->insert_widgets != NULL);
+
+	class->insert_widgets (backend, scratch_source);
+}
+
+gboolean
+e_source_config_backend_check_complete (ESourceConfigBackend *backend,
+                                        ESource *scratch_source)
+{
+	ESourceConfigBackendClass *class;
+
+	g_return_val_if_fail (E_IS_SOURCE_CONFIG_BACKEND (backend), FALSE);
+	g_return_val_if_fail (E_IS_SOURCE (scratch_source), FALSE);
+
+	class = E_SOURCE_CONFIG_BACKEND_GET_CLASS (backend);
+	g_return_val_if_fail (class->check_complete != NULL, FALSE);
+
+	return class->check_complete (backend, scratch_source);
+}
+
+void
+e_source_config_backend_commit_changes (ESourceConfigBackend *backend,
+                                        ESource *scratch_source)
+{
+	ESourceConfigBackendClass *class;
+
+	g_return_if_fail (E_IS_SOURCE_CONFIG_BACKEND (backend));
+	g_return_if_fail (E_IS_SOURCE (scratch_source));
+
+	class = E_SOURCE_CONFIG_BACKEND_GET_CLASS (backend);
+	g_return_if_fail (class->commit_changes != NULL);
+
+	class->commit_changes (backend, scratch_source);
+}