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diff --git a/pluma/pluma-view-activatable.c b/pluma/pluma-view-activatable.c
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+/*
+ * pluma-view-activatable.h
+ * This file is part of pluma
+ *
+ * Copyright (C) 2010 Steve Frécinaux
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Library 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 Library 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 https://www.gnu.org/licenses/.
+ */
+
+#include <config.h>
+
+#include "pluma-view-activatable.h"
+#include "pluma-view.h"
+
+/**
+ * SECTION:pluma-view-activatable
+ * @short_description: Interface for activatable extensions on views
+ * @see_also: #PeasExtensionSet
+ *
+ * #PlumaViewActivatable is an interface which should be implemented by
+ * extensions that should be activated on a pluma view.
+ **/
+G_DEFINE_INTERFACE(PlumaViewActivatable, pluma_view_activatable, G_TYPE_OBJECT)
+
+void
+pluma_view_activatable_default_init (PlumaViewActivatableInterface *iface)
+{
+ /**
+ * PlumaViewActivatable:view:
+ *
+ * The window property contains the pluma window for this
+ * #PlumaViewActivatable instance.
+ */
+ g_object_interface_install_property (iface,
+ g_param_spec_object ("view",
+ "view",
+ "A pluma view",
+ PLUMA_TYPE_VIEW,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY |
+ G_PARAM_STATIC_STRINGS));
+}
+
+/**
+ * pluma_view_activatable_activate:
+ * @activatable: A #PlumaViewActivatable.
+ *
+ * Activates the extension on the window property.
+ */
+void
+pluma_view_activatable_activate (PlumaViewActivatable *activatable)
+{
+ PlumaViewActivatableInterface *iface;
+
+ g_return_if_fail (PLUMA_IS_VIEW_ACTIVATABLE (activatable));
+
+ iface = PLUMA_VIEW_ACTIVATABLE_GET_IFACE (activatable);
+ if (iface->activate != NULL)
+ {
+ iface->activate (activatable);
+ }
+}
+
+/**
+ * pluma_view_activatable_deactivate:
+ * @activatable: A #PlumaViewActivatable.
+ *
+ * Deactivates the extension on the window property.
+ */
+void
+pluma_view_activatable_deactivate (PlumaViewActivatable *activatable)
+{
+ PlumaViewActivatableInterface *iface;
+
+ g_return_if_fail (PLUMA_IS_VIEW_ACTIVATABLE (activatable));
+
+ iface = PLUMA_VIEW_ACTIVATABLE_GET_IFACE (activatable);
+ if (iface->deactivate != NULL)
+ {
+ iface->deactivate (activatable);
+ }
+}