[evince] Make gnome-doc-utils optional

[Jan-Joost Spanjers <jspanjers src gnome org>]

commit bd26e60016e9e08c1784ee2d90695cc7eeb7daee
Author: Hib Eris <hib hiberis nl>
Date:   Thu Apr 15 14:11:34 2010 +0200

    Make gnome-doc-utils optional

 Makefile.am       |    7 +++++--
 configure.ac      |   30 +++++++++++++++++++++++++++++-
 shell/ev-window.c |   13 +++++++------
 3 files changed, 41 insertions(+), 9 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 4647ca4..a3ab218 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -14,8 +14,11 @@ SUBDIRS = \
 	libmisc \
 	properties \
 	shell \
-	po \
-	help
+	po
+
+if ENABLE_HELP
+SUBDIRS += help
+endif
 
 if ENABLE_TESTS
 SUBDIRS += test
diff --git a/configure.ac b/configure.ac
index 01eef2b..8f18357 100644
--- a/configure.ac
+++ b/configure.ac
@@ -66,7 +66,6 @@ AC_PROG_SED
 AC_PATH_PROG([GLIB_GENMARSHAL], [glib-genmarshal])
 AC_PATH_PROG([GLIB_MKENUMS],[glib-mkenums])
 
-GNOME_DOC_INIT
 GNOME_MAINTAINER_MODE_DEFINES
 GNOME_COMPILE_WARNINGS
 GNOME_CXX_WARNINGS
@@ -715,6 +714,34 @@ AC_SUBST(EVINCE_MIME_TYPES)
 AC_CHECK_FUNC(localtime_r, AC_DEFINE(HAVE_LOCALTIME_R, 1, [Defines if localtime_r is available on your system]))
 
 # *****************
+# Help files
+# *****************
+
+GNOME_DOC_INIT([], gnome_doc_utils=yes, gnome_doc_utils=no)
+
+AC_ARG_ENABLE(help,
+    [AS_HELP_STRING([--disable-help], [Disable offline help files])],
+    [enable_help=$enableval],
+    [enable_help=yes])
+
+if test "x$enable_help" = "xyes" && test "x$os_win32" = "xyes" ; then
+    AC_MSG_WARN([Offline help is disabled (not implemented on Windows).])
+    enable_help=no
+fi
+
+if test "x$enable_help" = "xyes" && test "x$gnome_doc_utils" == "xno"; then
+    AC_MSG_ERROR(
+       [gnome-doc-utils not found; use --disable-help to disable help files]
+    )
+fi
+
+if test "x$enable_help" = "xyes"; then
+    AC_DEFINE([OFFLINE_HELP_ENABLED], [1], [Enable offline help])
+fi
+
+AM_CONDITIONAL(ENABLE_HELP, test "x$enable_help" = "xyes")
+
+# *****************
 # API documentation
 # *****************
 
@@ -825,6 +852,7 @@ Configure summary:
 	Keyring Support....:  $with_keyring
 	DBUS Support.......:  $enable_dbus
 	SM client support..:  $with_smclient
+	Help files.........:  $enable_help
 	Nautilus Plugin....:  $enable_nautilus
 	Thumbnailer........:  $enable_thumbnailer
 	Previewer..........:  $enable_previewer
diff --git a/shell/ev-window.c b/shell/ev-window.c
index ec46976..b78c317 100644
--- a/shell/ev-window.c
+++ b/shell/ev-window.c
@@ -433,11 +433,6 @@ ev_window_setup_action_sensitivity (EvWindow *ev_window)
 	ev_window_set_action_sensitive (ev_window, ZOOM_CONTROL_ACTION,  has_pages);
 	ev_window_set_action_sensitive (ev_window, NAVIGATION_ACTION,  FALSE);
 
-        /* Help menu */
-#ifdef G_OS_WIN32
-	ev_window_set_action_sensitive (ev_window, "HelpContents", FALSE);
-#endif
-
         ev_window_update_actions (ev_window);
 }
 
@@ -3938,13 +3933,19 @@ ev_window_cmd_view_autoscroll (GtkAction *action, EvWindow *ev_window)
 	ev_view_autoscroll_start (EV_VIEW (ev_window->priv->view));
 }
 
+#if OFFLINE_HELP_ENABLED
+#define EV_HELP "ghelp:evince"
+#else
+#define EV_HELP "http://library.gnome.org/users/evince/stable/";
+#endif
+
 static void
 ev_window_cmd_help_contents (GtkAction *action, EvWindow *ev_window)
 {
 	GError  *error = NULL;
 
 	gtk_show_uri (gtk_window_get_screen (GTK_WINDOW (ev_window)),
-		      "ghelp:evince",
+		      EV_HELP,
 		      gtk_get_current_event_time (),
 		      &error);
 	if (error) {