[nautilus/csoriano/tasks: 17/23] Add NautilusDirectory skeleton

[Carlos Soriano <csoriano src gnome org>]

commit 6861b02dbc5baaadff07effada4f6ffec13a26ae
Author: Ernestas Kulik <ernestask gnome org>
Date:   Tue Jul 11 11:19:30 2017 +0300

    Add NautilusDirectory skeleton

 src-ng/main.c               | 12 ++++---
 src-ng/meson.build          |  2 ++
 src-ng/nautilus-directory.c | 47 +++++++++++++++++++++++++
 src-ng/nautilus-directory.h | 32 +++++++++++++++++
 src-ng/nautilus-file.c      | 84 ++++++++++++++++++++++++++++++++++-----------
 5 files changed, 153 insertions(+), 24 deletions(-)
---
diff --git a/src-ng/main.c b/src-ng/main.c
index 0a3ad0a60..f5474bb79 100644
--- a/src-ng/main.c
+++ b/src-ng/main.c
@@ -2,6 +2,7 @@
 
 #include <glib.h>
 
+#include "nautilus-directory.h"
 #include "nautilus-file.h"
 #include "nautilus-task-manager.h"
 
@@ -11,8 +12,9 @@ got_info (NautilusFile *file,
           GError       *error,
           gpointer      user_data)
 {
-    g_message ("Got info for %p\n\tDisplay name: %s",
-               (gpointer) file,
+    g_message ("Got info for %p",
+               (gpointer) file);
+    g_message ("\tDisplay name: %s\n",
                g_file_info_get_display_name (info));
 
     g_object_unref (info);
@@ -41,11 +43,13 @@ main (int    argc,
 
     g_message ("Creating NautilusFile");
     file = nautilus_file_new (location);
-    g_message ("Got %p\n", (gpointer) file);
+    g_message ("\tGot %p", (gpointer) file);
+    g_message ("\tFile is directory: %s\n",
+               NAUTILUS_IS_DIRECTORY (file)? "yes" : "no");
 
     g_message ("Creating another NautilusFile for the same location");
     duplicate_file = nautilus_file_new (location);
-    g_message ("Got %p, which is %s\n",
+    g_message ("\tGot %p, which is %s\n",
                (gpointer) duplicate_file,
                file == duplicate_file? "the same" : "not the same");
 
diff --git a/src-ng/meson.build b/src-ng/meson.build
index dbda07e75..8f1fec6ee 100644
--- a/src-ng/meson.build
+++ b/src-ng/meson.build
@@ -6,6 +6,8 @@ nautilus_ng_sources = ['nautilus-task.c',
                        'nautilus-file.h',
                        'tasks/nautilus-attribute-task.c',
                        'tasks/nautilus-attribute-task.h',
+                       'nautilus-directory.c',
+                       'nautilus-directory.h',
                        'main.c']
 
 nautilus_ng_dependencies = [gio, glib]
diff --git a/src-ng/nautilus-directory.c b/src-ng/nautilus-directory.c
new file mode 100644
index 000000000..e509265a2
--- /dev/null
+++ b/src-ng/nautilus-directory.c
@@ -0,0 +1,47 @@
+/* Copyright (C) 2017 Ernestas Kulik <ernestask gnome org>
+ *
+ * This file is part of Nautilus.
+ *
+ * Nautilus 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.
+ *
+ * Nautilus 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 Nautilus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "nautilus-directory.h"
+
+G_DEFINE_TYPE (NautilusDirectory, nautilus_directory, NAUTILUS_TYPE_FILE)
+
+static void
+nautilus_directory_class_init (NautilusDirectoryClass *klass)
+{
+}
+
+static void
+nautilus_directory_init (NautilusDirectory *self)
+{
+}
+
+NautilusFile *
+nautilus_directory_new (GFile *location)
+{
+    gpointer instance;
+
+    g_return_val_if_fail (G_IS_FILE (location), NULL);
+
+    instance = g_object_new (NAUTILUS_TYPE_DIRECTORY,
+                             "location", location,
+                             NULL);
+
+    g_assert (NAUTILUS_IS_DIRECTORY (instance));
+
+    return instance;
+}
diff --git a/src-ng/nautilus-directory.h b/src-ng/nautilus-directory.h
new file mode 100644
index 000000000..be1c33a69
--- /dev/null
+++ b/src-ng/nautilus-directory.h
@@ -0,0 +1,32 @@
+/* Copyright (C) 2017 Ernestas Kulik <ernestask gnome org>
+ *
+ * This file is part of Nautilus.
+ *
+ * Nautilus 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.
+ *
+ * Nautilus 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 Nautilus.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "nautilus-file.h"
+
+#define NAUTILUS_TYPE_DIRECTORY (nautilus_directory_get_type ())
+
+G_DECLARE_DERIVABLE_TYPE (NautilusDirectory, nautilus_directory,
+                          NAUTILUS, DIRECTORY,
+                          NautilusFile)
+
+struct _NautilusDirectoryClass
+{
+    NautilusFileClass parent_class;
+};
+
+NautilusFile *nautilus_directory_new (GFile *location);
diff --git a/src-ng/nautilus-file.c b/src-ng/nautilus-file.c
index 3b8c552cc..65692a83a 100644
--- a/src-ng/nautilus-file.c
+++ b/src-ng/nautilus-file.c
@@ -18,6 +18,7 @@
 
 #include "nautilus-file.h"
 
+#include "nautilus-directory.h"
 #include "nautilus-task-manager.h"
 #include "tasks/nautilus-attribute-task.h"
 
@@ -50,6 +51,54 @@ static GParamSpec *properties[N_PROPERTIES] = { NULL };
 static GHashTable *files = NULL;
 static GMutex files_mutex;
 
+static GObject *
+constructor (GType                  type,
+             guint                  n_construct_properties,
+             GObjectConstructParam *construct_properties)
+{
+    GFile *location = NULL;
+    gpointer instance;
+
+    for (guint i = 0; i < n_construct_properties; i++)
+    {
+        if (construct_properties[i].pspec == properties[PROP_LOCATION])
+        {
+            location = g_value_get_object (construct_properties[i].value);
+        }
+    }
+
+    g_assert (location != NULL);
+
+    g_mutex_lock (&files_mutex);
+
+    if (files == NULL)
+    {
+        files = g_hash_table_new_full (g_file_hash, (GEqualFunc) g_file_equal,
+                                       g_object_unref, NULL);
+    }
+
+
+    instance = g_hash_table_lookup (files, location);
+    if (instance != NULL)
+    {
+        instance = g_object_ref (instance);
+    }
+    else
+    {
+        GObjectClass *parent_class;
+
+        parent_class = G_OBJECT_CLASS (nautilus_file_parent_class);
+        instance = parent_class->constructor (type, n_construct_properties,
+                                              construct_properties);
+
+        g_assert (g_hash_table_insert (files, location, instance));
+    }
+
+    g_mutex_unlock (&files_mutex);
+
+    return instance;
+}
+
 static void
 set_property (GObject      *object,
               guint         property_id,
@@ -98,6 +147,7 @@ nautilus_file_class_init (NautilusFileClass *klass)
 
     object_class = G_OBJECT_CLASS (klass);
 
+    object_class->constructor = constructor;
     object_class->set_property = set_property;
     object_class->finalize = finalize;
 
@@ -211,32 +261,26 @@ nautilus_file_query_info (NautilusFile             *file,
 NautilusFile *
 nautilus_file_new (GFile *location)
 {
-    NautilusFile *file;
+    GFileType file_type;
 
     g_return_val_if_fail (G_IS_FILE (location), NULL);
 
-    g_mutex_lock (&files_mutex);
-
-    if (files == NULL)
-    {
-        files = g_hash_table_new_full (g_file_hash, (GEqualFunc) g_file_equal,
-                                       g_object_unref, NULL);
-    }
-
-
-    file = g_hash_table_lookup (files, location);
-    if (file != NULL)
+    /* TODO: extension points? */
+    file_type = g_file_query_file_type (location, G_FILE_QUERY_INFO_NONE,
+                                        NULL);
+    /* File does not exist.
+     * Search directory URIs also fall under this category.
+     * TODO: creation?
+     */
+    if (file_type == G_FILE_TYPE_UNKNOWN)
     {
-        file = g_object_ref (file);
+        return NULL;
     }
-    else
+    else if (file_type == G_FILE_TYPE_DIRECTORY)
     {
-        file = g_object_new (NAUTILUS_TYPE_FILE, "location", location, NULL);
-
-        g_assert (g_hash_table_insert (files, location, file));
+        /* Asserts that the constructed file is a directory. */
+        return nautilus_directory_new (location);
     }
 
-    g_mutex_unlock (&files_mutex);
-
-    return file;
+    return g_object_new (NAUTILUS_TYPE_FILE, "location", location, NULL);
 }