Add support for freedesktop.org File Manager DBus Interface

http://www.freedesktop.org/wiki/Specifications/file-manager-interface
Most of code is adapted from Nautilus:
http://git.gnome.org/browse/nautilus/tree/src/nautilus-freedesktop-dbus.c

Closes https://github.com/mate-desktop/mate-file-manager/issues/3

8 files changed, 391 insertions, 1 deletions

diff --git a/data/Makefile.am b/data/Makefile.am
index 0e8fb977..bee031c1 100644
--- a/data/Makefile.am
+++ b/data/Makefile.am
@@ -19,6 +19,14 @@ desktop_in_files = \
 mimedir = $(datadir)/mime/packages
 mime_DATA = $(xml_files)
 
+servicedir = $(datadir)/dbus-1/services
+service_DATA = $(service_in_files:.service.in=.service)
+service_in_files = 				\
+	org.mate.freedesktop.FileManager1.service.in
+
+org.mate.freedesktop.FileManager1.service: org.mate.freedesktop.FileManager1.service.in Makefile
+	$(AM_V_GEN) sed -e "s|\@bindir\@|$(bindir)|" $< > $@
+
 cajadatadir = $(datadir)/caja
 
 cajadata_DATA = \
@@ -30,6 +38,7 @@ cajadata_DATA = \
 EXTRA_DIST = $(cajadata_DATA) \
 	caja.desktop \
 	caja.desktop.in \
+	freedesktop-dbus-interfaces.xml \
 	$(xml_in_files) \
 	$(desktop_in_files) \
 	$(NULL)
diff --git a/data/freedesktop-dbus-interfaces.xml b/data/freedesktop-dbus-interfaces.xml
new file mode 100644
index 00000000..ab135b6a
--- /dev/null
+++ b/data/freedesktop-dbus-interfaces.xml
@@ -0,0 +1,36 @@
+<!DOCTYPE node PUBLIC
+"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN"
+"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
+
+<!--
+ This library 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.
+
+ This library 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 General Public
+ License along with this program; if not, write to the
+ Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+-->
+<node name="/" xmlns:doc="http://www.freedesktop.org/dbus/1.0/doc.dtd">
+  <interface name='org.freedesktop.FileManager1'>
+    <method name='ShowFolders'>
+      <arg type='as' name='URIs' direction='in'/>
+      <arg type='s' name='StartupId' direction='in'/>
+    </method>
+    <method name='ShowItems'>
+      <arg type='as' name='URIs' direction='in'/>
+      <arg type='s' name='StartupId' direction='in'/>
+    </method>
+    <method name='ShowItemProperties'>
+      <arg type='as' name='URIs' direction='in'/>
+      <arg type='s' name='StartupId' direction='in'/>
+    </method>
+  </interface>
+</node>
diff --git a/data/org.mate.freedesktop.FileManager1.service.in b/data/org.mate.freedesktop.FileManager1.service.in
new file mode 100644
index 00000000..801361b6
--- /dev/null
+++ b/data/org.mate.freedesktop.FileManager1.service.in
@@ -0,0 +1,3 @@
+[D-BUS Service]
+Name=org.freedesktop.FileManager1
+Exec=@bindir@/caja --no-default-window
diff --git a/src/Makefile.am b/src/Makefile.am
index 28c97fc1..84ee8b5f 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -43,6 +43,19 @@ LDADD = \
 	$(POPT_LIBS) \
 	$(NULL)
 
+dbus_freedesktop_built_sources =			\
+	caja-freedesktop-generated.c		\
+	caja-freedesktop-generated.h
+
+$(dbus_freedesktop_built_sources) : Makefile.am $(top_srcdir)/data/freedesktop-dbus-interfaces.xml
+	gdbus-codegen									\
+		--interface-prefix org.freedesktop.					\
+		--c-namespace CajaFreedesktop					\
+		--c-generate-object-manager						\
+		--generate-c-code caja-freedesktop-generated			\
+		$(top_srcdir)/data/freedesktop-dbus-interfaces.xml			\
+		$(NULL)
+
 @INTLTOOL_DESKTOP_RULE@
 
 desktop_in_files=mate-network-scheme.desktop.in
@@ -55,6 +68,7 @@ scheme_DATA = mate-network-scheme.desktop
 BUILT_SOURCES = \
 	caja-src-marshal.c \
 	caja-src-marshal.h \
+	$(dbus_freedesktop_built_sources) \
 	$(NULL)
 
 caja_SOURCES = \
@@ -76,6 +90,8 @@ caja_SOURCES = \
 	caja-emblem-sidebar.h \
 	caja-file-management-properties.c \
 	caja-file-management-properties.h \
+	caja-freedesktop-dbus.c \
+	caja-freedesktop-dbus.h \
 	caja-history-sidebar.c \
 	caja-history-sidebar.h \
 	caja-image-properties-page.c \
diff --git a/src/caja-application.c b/src/caja-application.c
index f70fbae7..b4f180f5 100644
--- a/src/caja-application.c
+++ b/src/caja-application.c
@@ -55,6 +55,7 @@
 #include "libcaja-private/caja-file-operations.h"
 #include "caja-window-private.h"
 #include "caja-window-manage-views.h"
+#include "caja-freedesktop-dbus.h"
 #include <unistd.h>
 #include <libxml/xmlsave.h>
 #include <glib/gstdio.h>
@@ -107,6 +108,9 @@ static GList *caja_application_spatial_window_list;
 /* The saving of the accelerator map was requested  */
 static gboolean save_of_accel_map_requested = FALSE;
 
+/* File Manager DBus Interface */
+static CajaFreedesktopDBus *fdb_manager = NULL;
+
 static void     desktop_changed_callback          (gpointer                  user_data);
 static void     desktop_location_changed_callback (gpointer                  user_data);
 static void     mount_removed_callback            (GVolumeMonitor            *monitor,
@@ -370,6 +374,12 @@ caja_application_finalize (GObject *object)
         application->proxy = NULL;
     }
 
+    if (fdb_manager != NULL)
+    {
+        g_object_unref (fdb_manager);
+        fdb_manager = NULL;
+    }
+
     G_OBJECT_CLASS (caja_application_parent_class)->finalize (object);
 }
 
@@ -846,6 +856,29 @@ open_windows (CajaApplication *application,
     }
 }
 
+void
+caja_application_open_location (CajaApplication *application,
+                                GFile *location,
+                                GFile *selection,
+                                const char *startup_id)
+{
+    CajaWindow *window;
+    GList *sel_list = NULL;
+
+    window = caja_application_create_navigation_window (application, startup_id, gdk_screen_get_default ());
+
+    if (selection != NULL) {
+        sel_list = g_list_prepend (NULL, g_object_ref (selection));
+    }
+
+    caja_window_slot_open_location_full (caja_window_get_active_slot (window), location,
+                                         0, CAJA_WINDOW_OPEN_FLAG_NEW_WINDOW, sel_list, NULL, NULL);
+
+    if (sel_list != NULL) {
+        caja_file_list_free (sel_list);
+    }
+}
+
 static UniqueResponse
 message_received_cb (UniqueApp         *unique_app,
                      gint               command,
@@ -985,6 +1018,9 @@ caja_application_startup (CajaApplication *application,
             g_signal_connect (application->unique_app, "message-received", G_CALLBACK (message_received_cb), application);
         }
 
+        /* Start the File Manager DBus Interface */
+        fdb_manager = caja_freedesktop_dbus_new (application);
+
         /* Monitor the preference to show or hide the desktop */
         g_signal_connect_swapped (mate_background_preferences,
                                   "changed::" MATE_BG_KEY_SHOW_DESKTOP,
diff --git a/src/caja-application.h b/src/caja-application.h
index 426f2c09..0ad62f07 100644
--- a/src/caja-application.h
+++ b/src/caja-application.h
@@ -105,6 +105,9 @@ void caja_application_close_all_spatial_windows  (void);
 void caja_application_open_desktop      (CajaApplication *application);
 void caja_application_close_desktop     (void);
 gboolean caja_application_save_accel_map    (gpointer data);
-
+void caja_application_open_location (CajaApplication *application,
+        GFile *location,
+        GFile *selection,
+        const char *startup_id);
 
 #endif /* CAJA_APPLICATION_H */
diff --git a/src/caja-freedesktop-dbus.c b/src/caja-freedesktop-dbus.c
new file mode 100644
index 00000000..1ce79c8f
--- /dev/null
+++ b/src/caja-freedesktop-dbus.c
@@ -0,0 +1,245 @@
+/*
+ * caja-freedesktop-dbus: Implementation for the org.freedesktop DBus file-management interfaces
+ *
+ * Caja 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.
+ *
+ * Caja 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, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * Authors: Akshay Gupta <[email protected]>
+ *          Federico Mena Quintero <[email protected]>
+ *          Stefano Karapetsas <[email protected]>
+ */
+
+#include <config.h>
+
+#include "caja-application.h"
+#include "caja-freedesktop-dbus.h"
+#include "caja-freedesktop-generated.h"
+
+#include <libcaja-private/caja-debug-log.h>
+
+#include "file-manager/fm-properties-window.h"
+
+#include <gio/gio.h>
+
+struct _CajaFreedesktopDBus {
+    GObject parent;
+
+    /* Id from g_dbus_own_name() */
+    guint owner_id;
+
+    /* DBus paraphernalia */
+    GDBusObjectManagerServer *object_manager;
+
+    /* Our DBus implementation skeleton */
+    CajaFreedesktopFileManager1 *skeleton;
+
+    /* Caja application */
+    CajaApplication *application;
+};
+
+struct _CajaFreedesktopDBusClass {
+    GObjectClass parent_class;
+};
+
+G_DEFINE_TYPE (CajaFreedesktopDBus, caja_freedesktop_dbus, G_TYPE_OBJECT);
+
+static gboolean
+skeleton_handle_show_items_cb (CajaFreedesktopFileManager1 *object,
+                               GDBusMethodInvocation *invocation,
+                               const gchar *const *uris,
+                               const gchar *startup_id,
+                               CajaFreedesktopDBus *fdb)
+{
+    CajaApplication *application;
+    int i;
+
+    application = CAJA_APPLICATION (fdb->application);
+
+    for (i = 0; uris[i] != NULL; i++) {
+        GFile *file;
+        GFile *parent;
+
+        file = g_file_new_for_uri (uris[i]);
+        parent = g_file_get_parent (file);
+
+        if (parent != NULL) {
+            caja_application_open_location (application, parent, file, startup_id);
+            g_object_unref (parent);
+        } else {
+            caja_application_open_location (application, file, NULL, startup_id);
+        }
+
+        g_object_unref (file);
+    }
+
+    caja_freedesktop_file_manager1_complete_show_items (object, invocation);
+    return TRUE;
+}
+
+static gboolean
+skeleton_handle_show_folders_cb (CajaFreedesktopFileManager1 *object,
+                                 GDBusMethodInvocation *invocation,
+                                 const gchar *const *uris,
+                                 const gchar *startup_id,
+                                 CajaFreedesktopDBus *fdb)
+{
+    CajaApplication *application;
+    int i;
+
+    application = CAJA_APPLICATION (fdb->application);
+
+    for (i = 0; uris[i] != NULL; i++) {
+        GFile *file;
+
+        file = g_file_new_for_uri (uris[i]);
+
+        caja_application_open_location (application, file, NULL, startup_id);
+
+        g_object_unref (file);
+    }
+
+    caja_freedesktop_file_manager1_complete_show_folders (object, invocation);
+    return TRUE;
+}
+
+static gboolean
+skeleton_handle_show_item_properties_cb (CajaFreedesktopFileManager1 *object,
+                     GDBusMethodInvocation *invocation,
+                     const gchar *const *uris,
+                     const gchar *startup_id,
+                     CajaFreedesktopDBus *fdb)
+{
+    CajaApplication *application;
+    CajaWindow *window;
+    GList *files;
+    int i;
+
+    application = CAJA_APPLICATION (fdb->application);
+    files = NULL;
+
+    for (i = 0; uris[i] != NULL; i++) {
+        files = g_list_prepend (files, caja_file_get_by_uri (uris[i]));
+    }
+
+    files = g_list_reverse (files);
+
+    if (uris[0] != NULL) {
+        GFile *file;
+        file = g_file_new_for_uri (uris[i]);
+        window = caja_application_get_spatial_window (application,
+                                                      NULL,
+                                                      startup_id,
+                                                      file,
+                                                      gdk_screen_get_default (),
+                                                      NULL);
+        fm_properties_window_present (files, window);
+        g_object_unref (file);
+    }
+
+    caja_file_list_free (files);
+
+    caja_freedesktop_file_manager1_complete_show_item_properties (object, invocation);
+    return TRUE;
+}
+
+static void
+bus_acquired_cb (GDBusConnection *conn,
+                 const gchar     *name,
+                 CajaFreedesktopDBus *fdb)
+{
+    caja_debug_log (FALSE, CAJA_DEBUG_LOG_DOMAIN_USER, "Bus acquired at %s", name);
+
+    fdb->object_manager = g_dbus_object_manager_server_new (CAJA_FDO_DBUS_PATH);
+
+    fdb->skeleton = caja_freedesktop_file_manager1_skeleton_new ();
+
+    g_signal_connect (fdb->skeleton, "handle-show-items",
+                      G_CALLBACK (skeleton_handle_show_items_cb), fdb);
+    g_signal_connect (fdb->skeleton, "handle-show-folders",
+                      G_CALLBACK (skeleton_handle_show_folders_cb), fdb);
+    g_signal_connect (fdb->skeleton, "handle-show-item-properties",
+                      G_CALLBACK (skeleton_handle_show_item_properties_cb), fdb);
+
+    g_dbus_interface_skeleton_export (G_DBUS_INTERFACE_SKELETON (fdb->skeleton), conn, CAJA_FDO_DBUS_PATH, NULL);
+
+    g_dbus_object_manager_server_set_connection (fdb->object_manager, conn);
+}
+
+static void
+name_acquired_cb (GDBusConnection *connection,
+                  const gchar     *name,
+                  gpointer         user_data)
+{
+    caja_debug_log (FALSE, CAJA_DEBUG_LOG_DOMAIN_USER, "Acquired the name %s on the session message bus\n", name);
+}
+
+static void
+name_lost_cb (GDBusConnection *connection,
+              const gchar     *name,
+              gpointer         user_data)
+{
+    caja_debug_log (FALSE, CAJA_DEBUG_LOG_DOMAIN_USER, "Lost (or failed to acquire) the name %s on the session message bus\n", name);
+}
+
+static void
+caja_freedesktop_dbus_dispose (GObject *object)
+{
+    CajaFreedesktopDBus *fdb = (CajaFreedesktopDBus *) object;
+
+    if (fdb->owner_id != 0) {
+        g_bus_unown_name (fdb->owner_id);
+        fdb->owner_id = 0;
+    }
+
+    if (fdb->skeleton != NULL) {
+        g_dbus_interface_skeleton_unexport (G_DBUS_INTERFACE_SKELETON (fdb->skeleton));
+        g_object_unref (fdb->skeleton);
+        fdb->skeleton = NULL;
+    }
+
+    g_clear_object (&fdb->object_manager);
+
+    G_OBJECT_CLASS (caja_freedesktop_dbus_parent_class)->dispose (object);
+}
+
+static void
+caja_freedesktop_dbus_class_init (CajaFreedesktopDBusClass *klass)
+{
+    GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+    object_class->dispose = caja_freedesktop_dbus_dispose;
+}
+
+static void
+caja_freedesktop_dbus_init (CajaFreedesktopDBus *fdb)
+{
+    fdb->owner_id = g_bus_own_name (G_BUS_TYPE_SESSION,
+                                    CAJA_FDO_DBUS_NAME,
+                                    G_BUS_NAME_OWNER_FLAGS_NONE,
+                                    bus_acquired_cb,
+                                    name_acquired_cb,
+                                    name_lost_cb,
+                                    fdb,
+                                    NULL);
+}
+
+/* Tries to own the org.freedesktop.FileManager1 service name */
+CajaFreedesktopDBus *
+caja_freedesktop_dbus_new (CajaApplication *application)
+{
+    CajaFreedesktopDBus *fdb = g_object_new (caja_freedesktop_dbus_get_type (), NULL);
+    fdb->application = application;
+    return fdb;
+}
diff --git a/src/caja-freedesktop-dbus.h b/src/caja-freedesktop-dbus.h
new file mode 100644
index 00000000..a3ac1504
--- /dev/null
+++ b/src/caja-freedesktop-dbus.h
@@ -0,0 +1,42 @@
+/*
+ * caja-freedesktop-dbus: Implementation for the org.freedesktop DBus file-management interfaces
+ *
+ * Caja 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.
+ *
+ * Caja 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, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * Authors: Akshay Gupta <[email protected]>
+ *          Federico Mena Quintero <[email protected]>
+ *          Stefano Karapetsas <[email protected]>
+ */
+
+
+#ifndef __CAJA_FREEDESKTOP_DBUS_H__
+#define __CAJA_FREEDESKTOP_DBUS_H__
+
+#include <glib-object.h>
+
+#include "caja-application.h"
+
+#define CAJA_FDO_DBUS_IFACE "org.freedesktop.FileManager1"
+#define CAJA_FDO_DBUS_NAME  "org.freedesktop.FileManager1"
+#define CAJA_FDO_DBUS_PATH  "/org/freedesktop/FileManager1"
+
+typedef struct _CajaFreedesktopDBus CajaFreedesktopDBus;
+typedef struct _CajaFreedesktopDBusClass CajaFreedesktopDBusClass;
+
+GType caja_freedesktop_dbus_get_type (void);
+CajaFreedesktopDBus * caja_freedesktop_dbus_new (CajaApplication *application);
+
+#endif /* __CAJA_FREEDESKTOP_DBUS_H__ */