A libdocument/ev-init.[ch]: Add single init/shutdown method. Bug #569117.

	* evince-document.h:
	* libdocument/Makefile.am:
	A libdocument/ev-init.[ch]: Add single init/shutdown method. Bug
	#569117.

	* libdocument/ev-backends-manager.c: (_ev_backends_manager_init):
	* libdocument/ev-backends-manager.h:
	* libdocument/ev-debug.c: (_ev_debug_init), (_ev_debug_shutdown):
	* libdocument/ev-debug.h:
	* libdocument/ev-file-helpers.c: (_ev_file_helpers_init),
	(_ev_file_helpers_shutdown):
	* libdocument/ev-file-helpers.h: Make these init/shutdown methods
	private.

	* properties/ev-properties-main.c: (nautilus_module_initialize),
	(nautilus_module_shutdown):
	* shell/main.c: (main):
	* thumbnailer/evince-thumbnailer.c: (main): Use the new single
	init/shutdown method.

svn path=/trunk/; revision=3391

1 files changed, 83 insertions, 0 deletions

diff --git a/libdocument/ev-init.c b/libdocument/ev-init.c
new file mode 100644
index 0000000..34b323c
--- /dev/null
+++ b/libdocument/ev-init.c
@@ -0,0 +1,83 @@
+/* this file is part of evince, a gnome document viewer
+ *
+ * Copyright © 2009 Christian Persch
+ *
+ * Evince 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) any later version.
+ *
+ * Evince 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <config.h>
+
+#include <glib.h>
+
+#include "ev-init.h"
+#include "ev-backends-manager.h"
+#include "ev-debug.h"
+#include "ev-file-helpers.h"
+
+static int ev_init_count;
+
+/**
+ * ev_init:
+ *
+ * Initializes the evince document library.
+ *
+ * You must call this before calling any other function in the evince
+ * document library.
+ *
+ * Returns: %TRUE if any backends were found; %FALSE otherwise
+ */
+gboolean
+ev_init (void)
+{
+        static gboolean have_backends;
+
+        if (ev_init_count++ > 0)
+                return have_backends;
+
+        _ev_debug_init ();
+        _ev_file_helpers_init ();
+        have_backends = _ev_backends_manager_init ();
+
+        return have_backends;
+}
+
+/**
+ * ev_shutdown:
+ *
+ * Shuts the evince document library down.
+ */
+void
+ev_shutdown (void)
+{
+        g_assert (_ev_is_initialized ());
+
+        if (--ev_init_count > 0)
+                return;
+
+        _ev_backends_manager_shutdown ();
+        _ev_file_helpers_shutdown ();
+        _ev_debug_shutdown ();
+}
+
+/*
+ * _ev_is_initialized:
+ *
+ * Returns: %TRUE if the evince document library has been initialized
+ */
+gboolean
+_ev_is_initialized (void)
+{
+        return ev_init_count > 0;
+}