[gthumb/ext: 20/79] implement the gtk_tree_drag_source interface for gth_file_store

[Paolo Bacchilega <paobac src gnome org>]

commit 7e8e6b0cd755b3fafa6f112fa62f05fd4d87e337
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Mon Jun 22 17:00:10 2009 +0200

    implement the gtk_tree_drag_source interface for gth_file_store

 gthumb/gth-browser.c    |   41 -----------------
 gthumb/gth-file-store.c |  111 +++++++++++++++++++++++++++++++++++++++++++----
 2 files changed, 102 insertions(+), 50 deletions(-)
---
diff --git a/gthumb/gth-browser.c b/gthumb/gth-browser.c
index 1449418..eb8555f 100644
--- a/gthumb/gth-browser.c
+++ b/gthumb/gth-browser.c
@@ -2295,42 +2295,6 @@ gth_file_view_item_activated_cb (GtkIconView *iconview,
 
 
 static void
-gth_file_list_drag_data_get  (GtkWidget        *widget,
-			      GdkDragContext   *context,
-			      GtkSelectionData *selection_data,
-			      guint             info,
-			      guint             time,
-			      gpointer          extra_data)
-{
-	GthBrowser  *browser = extra_data;
-	GList       *items;
-	GList       *file_list;
-	int          n_uris;
-	char       **uris;
-	int          i;
-	GList       *scan;
-
-	items = gth_file_selection_get_selected (GTH_FILE_SELECTION (gth_browser_get_file_list_view (browser)));
-	file_list = gth_file_list_get_files (GTH_FILE_LIST (gth_browser_get_file_list (browser)), items);
-	n_uris = g_list_length (file_list);
-	uris = g_new (char *, n_uris + 1);
-	for (i = 0, scan = file_list; scan; scan = scan->next, i++) {
-		GthFileData *file_data = scan->data;
-		uris[i] = g_file_get_uri (file_data->file);
-
-g_print ("==> %s\n", uris[i]);
-
-	}
-	uris[i] = NULL;
-	gtk_selection_data_set_uris (selection_data, uris);
-
-	g_strfreev (uris);
-	_g_object_list_unref (file_list);
-	_gtk_tree_path_list_free (items);
-}
-
-
-static void
 add_browser_toolbar_menu_buttons (GthBrowser *browser)
 {
 	int          tool_pos;
@@ -2812,11 +2776,6 @@ _gth_browser_construct (GthBrowser *browser)
 			  G_CALLBACK (gth_file_view_item_activated_cb),
 			  browser);
 
-	g_signal_connect (gth_file_list_get_view (GTH_FILE_LIST (browser->priv->file_list)),
-			  "drag_data_get",
-			  G_CALLBACK (gth_file_list_drag_data_get),
-			  browser);
-
 	browser->priv->file_list_popup = gtk_ui_manager_get_widget (browser->priv->ui, "/FileListPopup");
 
 	/* the filter bar */
diff --git a/gthumb/gth-file-store.c b/gthumb/gth-file-store.c
index b4f75aa..ee12c01 100644
--- a/gthumb/gth-file-store.c
+++ b/gthumb/gth-file-store.c
@@ -467,8 +467,90 @@ gth_file_store_iter_parent (GtkTreeModel *tree_model,
 }
 
 
+static gboolean
+gth_file_store_row_draggable (GtkTreeDragSource *drag_source,
+                              GtkTreePath       *path)
+{
+	return TRUE;
+}
+
+
+static gboolean
+gth_file_store_drag_data_get (GtkTreeDragSource *drag_source,
+                              GtkTreePath       *path,
+                              GtkSelectionData  *selection_data)
+{
+	gboolean      retval = FALSE;
+	GthFileStore *file_store;
+	int          *indices, n;
+	GthFileRow   *row;
+
+	g_return_val_if_fail (path != NULL, FALSE);
+
+	file_store = GTH_FILE_STORE (drag_source);
+
+	indices = gtk_tree_path_get_indices (path);
+	n = indices[0];
+	if ((n < 0) || (n >= file_store->priv->num_rows))
+		return FALSE;
+
+	row = file_store->priv->rows[n];
+	g_return_val_if_fail (row != NULL, FALSE);
+	g_return_val_if_fail (row->pos == n, FALSE);
+
+	if (gtk_selection_data_targets_include_uri (selection_data)) {
+		char **uris;
+
+		uris = g_new (char *, 2);
+		uris[0] = g_file_get_uri (row->file->file);
+		uris[1] = NULL;
+		gtk_selection_data_set_uris (selection_data, uris);
+		retval = TRUE;
+
+		g_strfreev (uris);
+	}
+	else if (gtk_selection_data_targets_include_text (selection_data)) {
+		char *parse_name;
+
+		parse_name = g_file_get_parse_name (row->file->file);
+		gtk_selection_data_set_text (selection_data, parse_name, -1);
+		retval = TRUE;
+
+		g_free (parse_name);
+	}
+
+	return retval;
+}
+
+static gboolean
+gth_file_store_drag_data_delete (GtkTreeDragSource *drag_source,
+                                 GtkTreePath       *path)
+{
+	GthFileStore *file_store;
+	int          *indices, n;
+	GthFileRow   *row;
+
+	g_return_val_if_fail (path != NULL, FALSE);
+
+	file_store = GTH_FILE_STORE (drag_source);
+
+	indices = gtk_tree_path_get_indices (path);
+	n = indices[0];
+	if ((n < 0) || (n >= file_store->priv->num_rows))
+		return FALSE;
+
+	row = file_store->priv->rows[n];
+	g_return_val_if_fail (row != NULL, FALSE);
+	g_return_val_if_fail (row->pos == n, FALSE);
+
+	gth_file_store_remove (file_store, row->abs_pos);
+
+	return TRUE;
+}
+
+
 static void
-tree_model_iface_init (GtkTreeModelIface *iface)
+gtk_tree_model_iface_init (GtkTreeModelIface *iface)
 {
 	iface->get_flags       = gth_file_store_get_flags;
 	iface->get_n_columns   = gth_file_store_get_n_columns;
@@ -485,6 +567,15 @@ tree_model_iface_init (GtkTreeModelIface *iface)
 }
 
 
+static void
+gtk_tree_drag_source_iface_init (GtkTreeDragSourceIface *iface)
+{
+	iface->row_draggable = gth_file_store_row_draggable;
+	iface->drag_data_get = gth_file_store_drag_data_get;
+	iface->drag_data_delete = gth_file_store_drag_data_delete;
+}
+
+
 GType
 gth_file_store_get_type (void)
 {
@@ -502,18 +593,20 @@ gth_file_store_get_type (void)
 			0,
 			(GInstanceInitFunc) gth_file_store_init
 		};
-		static const GInterfaceInfo tree_model_info = {
-			(GInterfaceInitFunc) tree_model_iface_init,
+		static const GInterfaceInfo gtk_tree_model_info = {
+			(GInterfaceInitFunc) gtk_tree_model_iface_init,
+			NULL,
+			NULL
+		};
+		static const GInterfaceInfo gtk_tree_drag_source_info = {
+			(GInterfaceInitFunc) gtk_tree_drag_source_iface_init,
 			NULL,
 			NULL
 		};
 
-		type = g_type_register_static (G_TYPE_OBJECT,
-					       "GthFileStore",
-					       &type_info,
-					       0);
-
-		g_type_add_interface_static (type, GTK_TYPE_TREE_MODEL, &tree_model_info);
+		type = g_type_register_static (G_TYPE_OBJECT, "GthFileStore", &type_info, 0);
+		g_type_add_interface_static (type, GTK_TYPE_TREE_MODEL, &gtk_tree_model_info);
+		g_type_add_interface_static (type, GTK_TYPE_TREE_DRAG_SOURCE, &gtk_tree_drag_source_info);
 	}
 
 	return type;