1 files changed, 250 insertions, 0 deletions
diff --git a/extensions/image-properties/nautilus-image-properties-page-model-provider.c b/extensions/image-properties/nautilus-image-properties-page-model-provider.c
new file mode 100644
index 000000000..cf55f1094
--- /dev/null
+++ b/extensions/image-properties/nautilus-image-properties-page-model-provider.c
@@ -0,0 +1,250 @@
+/* Copyright (C) 2004 Red Hat, Inc
+ * Copyright (c) 2007 Novell, Inc.
+ * Copyright (c) 2017 Thomas Bechtold <thomasbechtold@jpberlin.de>
+ * Copyright (c) 2018 Ernestas Kulik <ernestask@gnome.org>
+ *
+ * This program 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.
+ *
+ * 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
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ * Author: Alexander Larsson <alexl@redhat.com>
+ * XMP support by Hubert Figuiere <hfiguiere@novell.com>
+ */
+
+#include "nautilus-image-properties-page-model-provider.h"
+#include "nautilus-image-properties-page-model.h"
+#include <glib/gi18n.h>
+#include <nautilus-extension.h>
+
+#define NAUTILUS_IMAGE_PROPERTIES_PAGE_MODEL_NAME "NautilusImagePropertiesPageModel::property_page"
+
+struct _NautilusImagePropertiesPageModelProvider
+{
+    GObject parent_instance;
+
+    NautilusPropertyPageModel *page_model;
+    GList *files;
+};
+
+enum
+{
+    PROP_0,
+    PROP_PAGE_MODEL,
+    PROP_FILES,
+    N_PROPERTIES
+};
+
+static void property_page_provider_iface_init (NautilusPropertyPageModelProviderInterface *iface);
+
+G_DEFINE_DYNAMIC_TYPE_EXTENDED (NautilusImagePropertiesPageModelProvider,
+                                nautilus_image_properties_page_model_provider,
+                                G_TYPE_OBJECT,
+                                0,
+                                G_IMPLEMENT_INTERFACE_DYNAMIC (NAUTILUS_TYPE_PROPERTY_PAGE_MODEL_PROVIDER,
+                                                               property_page_provider_iface_init))
+
+static gboolean
+is_mime_type_supported (const char *mime_type)
+{
+    g_autoptr (GSList) formats = NULL;
+
+    if (mime_type == NULL)
+    {
+        return FALSE;
+    }
+
+    formats = gdk_pixbuf_get_formats ();
+
+    for (GSList *l = formats; l != NULL; l = l->next)
+    {
+        g_auto (GStrv) mime_types = NULL;
+
+        mime_types = gdk_pixbuf_format_get_mime_types (l->data);
+        if (mime_types == NULL)
+        {
+            continue;
+        }
+
+        if (g_strv_contains ((const char *const *) mime_types, mime_type))
+        {
+            return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
+static NautilusPropertyPageModel*
+get_model (NautilusPropertyPageModelProvider *provider)
+{
+    NautilusImagePropertiesPageModelProvider *self;
+
+    self = NAUTILUS_IMAGE_PROPERTIES_PAGE_MODEL_PROVIDER (provider);
+
+    return self->page_model;
+}
+
+static void
+set_files (NautilusPropertyPageModelProvider *provider,
+           GList                             *files)
+{
+    NautilusImagePropertiesPageModelProvider *self;
+    NautilusFileInfo *file_info;
+    g_autofree char *mime_type = NULL;
+
+    self = NAUTILUS_IMAGE_PROPERTIES_PAGE_MODEL_PROVIDER (provider);
+
+    if (self->files != NULL)
+    {
+        g_list_free_full (self->files, g_object_unref);
+        self->files = NULL;
+    }
+
+    self->files = g_list_copy_deep (files,
+                                    (GCopyFunc) g_object_ref, NULL);
+
+    if (self->files == NULL || self->files->next != NULL)
+    {
+        return;
+    }
+
+    file_info = NAUTILUS_FILE_INFO (self->files->data);
+    mime_type = nautilus_file_info_get_mime_type (file_info);
+    if (!is_mime_type_supported (mime_type))
+    {
+        return;
+    }
+
+    nautilus_image_properties_page_model_load_from_file_info (NAUTILUS_IMAGE_PROPERTIES_PAGE_MODEL (self->page_model),
+                                                        file_info);
+}
+
+static gboolean
+supports_files (NautilusPropertyPageModelProvider *provider)
+{
+    g_autofree char *mime_type = NULL;
+    NautilusFileInfo *file_info;
+    NautilusImagePropertiesPageModelProvider *self;
+
+    self = NAUTILUS_IMAGE_PROPERTIES_PAGE_MODEL_PROVIDER (provider);
+    if (self->files == NULL || self->files->next != NULL)
+    {
+        return FALSE;
+    }
+
+    file_info = NAUTILUS_FILE_INFO (self->files->data);
+    mime_type = nautilus_file_info_get_mime_type (file_info);
+    if (!is_mime_type_supported (mime_type))
+    {
+        return FALSE;
+    }
+
+    return TRUE;
+}
+
+static void
+nautilus_image_properties_page_model_provider_get_property (GObject    *object,
+                                                      guint       prop_id,
+                                                      GValue     *value,
+                                                      GParamSpec *pspec)
+{
+    NautilusImagePropertiesPageModelProvider *self = NAUTILUS_IMAGE_PROPERTIES_PAGE_MODEL_PROVIDER (object);
+    switch (prop_id)
+    {
+        case PROP_PAGE_MODEL:
+        {
+            g_value_set_object (value, self->page_model);
+        }
+        break;
+
+        case PROP_FILES:
+        {
+            g_value_set_pointer (value, self->files);
+        }
+        break;
+
+        default:
+        {
+            g_assert_not_reached ();
+        }
+    }
+}
+
+static void
+nautilus_image_properties_page_model_provider_set_property (GObject    *object,
+                                                      guint       prop_id,
+                                                      const GValue     *value,
+                                                      GParamSpec *pspec)
+{
+    NautilusImagePropertiesPageModelProvider *self = NAUTILUS_IMAGE_PROPERTIES_PAGE_MODEL_PROVIDER (object);
+    switch (prop_id)
+    {
+        case PROP_PAGE_MODEL:
+        {
+            g_clear_object (&self->page_model);
+            self->page_model = NAUTILUS_PROPERTY_PAGE_MODEL (g_value_get_object (value));
+        }
+        break;
+
+        case PROP_FILES:
+        {
+            set_files (NAUTILUS_PROPERTY_PAGE_MODEL_PROVIDER (self),
+                       g_value_get_pointer (value));
+        }
+        break;
+
+        default:
+        {
+            g_assert_not_reached ();
+        }
+    }
+}
+
+static void
+property_page_provider_iface_init (NautilusPropertyPageModelProviderInterface *iface)
+{
+    iface->get_model = get_model;
+    iface->set_files = set_files;
+    iface->supports_files = supports_files;
+
+}
+
+static void
+nautilus_image_properties_page_model_provider_init (NautilusImagePropertiesPageModelProvider *self)
+{
+    self->page_model = NAUTILUS_PROPERTY_PAGE_MODEL (nautilus_image_properties_page_model_new ());
+}
+
+static void
+nautilus_image_properties_page_model_provider_class_init (NautilusImagePropertiesPageModelProviderClass *klass)
+{
+    GObjectClass *oclass;
+
+    oclass = G_OBJECT_CLASS (klass);
+    oclass->get_property = nautilus_image_properties_page_model_provider_get_property;
+    oclass->set_property = nautilus_image_properties_page_model_provider_set_property;
+
+    g_object_class_override_property (oclass, PROP_PAGE_MODEL, "page-model");
+    g_object_class_override_property (oclass, PROP_FILES, "files");
+}
+
+static void
+nautilus_image_properties_page_model_provider_class_finalize (NautilusImagePropertiesPageModelProviderClass *klass)
+{
+    (void) klass;
+}
+
+void
+nautilus_image_properties_page_model_provider_load (GTypeModule *module)
+{
+    nautilus_image_properties_page_model_provider_register_type (module);
+}