Adding upstream version 1:48.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

panels/keyboard/cc-input-source.h

@@ -0,0 +1,53 @@
+/*
+ * Copyright © 2018 Canonical Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <glib-object.h>
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+#define CC_TYPE_INPUT_SOURCE (cc_input_source_get_type ())
+G_DECLARE_DERIVABLE_TYPE (CcInputSource, cc_input_source, CC, INPUT_SOURCE, GObject)
+
+struct _CcInputSourceClass
+{
+  GObjectClass parent_class;
+
+  gchar*       (*get_label)          (CcInputSource *source);
+  gboolean     (*matches)            (CcInputSource *source,
+                                      CcInputSource *source2);
+  const gchar* (*get_layout)         (CcInputSource *source);
+  const gchar* (*get_layout_variant) (CcInputSource *source);
+};
+
+void             cc_input_source_emit_label_changed (CcInputSource *source);
+
+gchar           *cc_input_source_get_label          (CcInputSource *source);
+
+gboolean         cc_input_source_matches            (CcInputSource *source,
+                                                     CcInputSource *source2);
+
+const gchar     *cc_input_source_get_layout         (CcInputSource *source);
+
+const gchar     *cc_input_source_get_layout_variant (CcInputSource *source);
+
+void             cc_input_source_launch_previewer   (CcInputSource *source,
+                                                     GtkWidget     *requester);
+
+G_END_DECLS