GNOME.org
 

Dropping in the tree and list views.

I just checked in code to accept drops in the tree and list views.  I'd
appreciate it if people would bang on it for a little while and file
bugs in bugzilla.

The patch is attached, it would be nice if people could review it.

Thanks,
-dave

(I'm working on the drag end, it should be ready to check in soonish)

? autom4te-2.53.cache
? nautilus-tree-dest.patch
? stamp-h1
? components/adapter/Nautilus_ComponentAdapterFactory_std.server.in
? components/history/Nautilus_View_history.server.in
? components/loser/content/Nautilus_View_content-loser.server.in
? components/loser/sidebar/Nautilus_View_sidebar-loser.server.in
? components/music/Nautilus_View_music.server.in
? components/notes/Nautilus_View_notes.server.in
? components/sample/Nautilus_View_sample.server.in
? components/text/Nautilus_View_text.server.in
? components/throbber/Nautilus_Control_throbber.server.in
? components/tree/Nautilus_View_tree.server.in
? src/file-manager/eggtreemultidnd.c
? src/file-manager/eggtreemultidnd.h
Index: ChangeLog
===================================================================
RCS file: /cvs/gnome/nautilus/ChangeLog,v
retrieving revision 1.5458
diff -u -r1.5458 ChangeLog
--- ChangeLog	25 Jul 2002 17:54:32 -0000	1.5458
+++ ChangeLog	25 Jul 2002 20:51:05 -0000
@@ -1,3 +1,38 @@
+2002-07-25  Dave Camp  <dave ximian com>
+
+	* components/tree/nautilus-tree-view.c: (get_root_uri_callback),
+	(get_file_for_path_callback), (move_copy_items_callback): New
+	functions.
+	(create_tree): Create a NautilusTreeViewDragDest.
+	(nautilus_tree_view_dispose): Unref the DragDest object.
+	(nautilus_tree_view_class_init): initialize dispose.
+	* libnautilus-private/Makefile.am: Build
+	nautilus-tree-view-drag-dest.[ch].
+	* libnautilus-tree-view-drag-dest.c:
+	* libnautilus-tree-view-drag-dest.h: New files.
+	* libnautilus-private/nautilus-dnd.c: 
+	(nautilus_drag_selection_includes_special_link): Moved here
+	from nautilus-icon-dnd.c.
+	* libnautilus-private/nautilus-dnd.h: Prototype for
+	nautilus_drag_selection_includes_special_link.
+	* libnautilus-private/nautilus-file.c:
+	(nautilus_file_get_drop_target_uri): Moved here from
+	fm-directory-view.
+	* libnautilus-private/nautilus-file.h:
+	* libnautilus-private/nautilus-icon-dnd.c:
+	(nautilus_icon_container_receive_dropped_icons): Call
+	nautilus_drag_selection_includes_special_link().
+	* libnautilus-private/nautilus-marshal.list: New marshallers.
+	* src/file-manager/fm-icon-view.c:
+	(get_icon_drop_target_uri_callback): Use
+	nautilus_file_get_drop_target_uri().
+	* src/file-manager/fm-list-view.c: (get_root_uri_callback),
+	(get_file_for_path_callback), (move_copy_items_callback): New
+	functions.
+	(create_and_set_up_tree_view): Create a NautilusViewDragDest
+	object. 
+	(fm_list_view_dispose): Unref the DragDest object.
+
 === nautilus 2.0.2 ===
 
 2002-07-25  Dave Camp  <dave ximian com>
Index: components/tree/nautilus-tree-view.c
===================================================================
RCS file: /cvs/gnome/nautilus/components/tree/nautilus-tree-view.c,v
retrieving revision 1.132
diff -u -r1.132 nautilus-tree-view.c
--- components/tree/nautilus-tree-view.c	25 Jun 2002 19:32:03 -0000	1.132
+++ components/tree/nautilus-tree-view.c	25 Jul 2002 20:51:06 -0000
@@ -44,8 +44,10 @@
 #include <gtk/gtktreeview.h>
 #include <libgnomevfs/gnome-vfs-utils.h>
 #include <libnautilus-private/nautilus-file-attributes.h>
+#include <libnautilus-private/nautilus-file-operations.h>
 #include <libnautilus-private/nautilus-global-preferences.h>
 #include <libnautilus-private/nautilus-program-choosing.h>
+#include <libnautilus-private/nautilus-tree-view-drag-dest.h>
 
 #define NAUTILUS_PREFERENCES_TREE_VIEW_EXPANSION_STATE "tree-sidebar-panel/expansion_state"
 
@@ -57,6 +59,8 @@
 
 	NautilusFile *activation_file;
 	GHashTable   *expanded_uris;
+
+	NautilusTreeViewDragDest *drag_dest;
 };
 
 typedef struct {
@@ -342,6 +346,52 @@
 	return result;
 }
 
+
+static char *
+get_root_uri_callback (NautilusTreeViewDragDest *dest,
+		       gpointer user_data)
+{
+	NautilusTreeView *view;
+	
+	view = NAUTILUS_TREE_VIEW (user_data);
+
+	return g_strdup ("file:///");
+}
+
+static NautilusFile *
+get_file_for_path_callback (NautilusTreeViewDragDest *dest,
+			    GtkTreePath *path,
+			    gpointer user_data)
+{
+	NautilusTreeView *view;
+	
+	view = NAUTILUS_TREE_VIEW (user_data);
+
+	return sort_model_path_to_file (view, path);
+}
+
+static void
+move_copy_items_callback (NautilusTreeViewDragDest *dest,
+			  const GList *item_uris,
+			  const char *target_uri,
+			  guint action,
+			  int x,
+			  int y,
+			  gpointer user_data)
+{
+	NautilusTreeView *view;
+
+	view = NAUTILUS_TREE_VIEW (user_data);
+
+	nautilus_file_operations_copy_move
+		(item_uris,
+		 NULL,
+		 target_uri,
+		 action,
+		 GTK_WIDGET (view->details->tree_widget),
+		 NULL, NULL);
+}
+
 static void
 create_tree (NautilusTreeView *view)
 {
@@ -369,6 +419,21 @@
 	g_signal_connect_object (view->details->tree_widget, "destroy",
 				 G_CALLBACK (save_expansion_state_callback), view, 0);
 
+	view->details->drag_dest = 
+		nautilus_tree_view_drag_dest_new (view->details->tree_widget);
+	g_signal_connect_object (view->details->drag_dest, 
+				 "get_root_uri",
+				 G_CALLBACK (get_root_uri_callback),
+				 view, 0);
+	g_signal_connect_object (view->details->drag_dest, 
+				 "get_file_for_path",
+				 G_CALLBACK (get_file_for_path_callback),
+				 view, 0);
+	g_signal_connect_object (view->details->drag_dest,
+				 "move_copy_items",
+				 G_CALLBACK (move_copy_items_callback),
+				 view, 0);
+
 	/* Create column */
 	column = gtk_tree_view_column_new ();
 
@@ -468,6 +533,19 @@
 }
 
 static void
+nautilus_tree_view_dispose (GObject *object)
+{
+	NautilusTreeView *view;
+	
+	view = NAUTILUS_TREE_VIEW (object);
+	
+	if (view->details->drag_dest) {
+		g_object_unref (view->details->drag_dest);
+		view->details->drag_dest = NULL;
+	}
+}
+
+static void
 nautilus_tree_view_finalize (GObject *object)
 {
 	NautilusTreeView *view;
@@ -491,5 +569,6 @@
 static void
 nautilus_tree_view_class_init (NautilusTreeViewClass *class)
 {
+	G_OBJECT_CLASS (class)->dispose = nautilus_tree_view_dispose;
 	G_OBJECT_CLASS (class)->finalize = nautilus_tree_view_finalize;
 }
Index: libnautilus-private/Makefile.am
===================================================================
RCS file: /cvs/gnome/nautilus/libnautilus-private/Makefile.am,v
retrieving revision 1.217
diff -u -r1.217 Makefile.am
--- libnautilus-private/Makefile.am	20 Apr 2002 18:15:39 -0000	1.217
+++ libnautilus-private/Makefile.am	25 Jul 2002 20:51:08 -0000
@@ -147,6 +147,8 @@
 	nautilus-trash-file.h \
 	nautilus-trash-monitor.c \
 	nautilus-trash-monitor.h \
+	nautilus-tree-view-drag-dest.c \
+	nautilus-tree-view-drag-dest.h \
 	nautilus-undo-context.c \
 	nautilus-undo-context.h \
 	nautilus-undo-manager.c \
Index: libnautilus-private/nautilus-dnd.c
===================================================================
RCS file: /cvs/gnome/nautilus/libnautilus-private/nautilus-dnd.c,v
retrieving revision 1.6
diff -u -r1.6 nautilus-dnd.c
--- libnautilus-private/nautilus-dnd.c	15 Jul 2002 18:13:22 -0000	1.6
+++ libnautilus-private/nautilus-dnd.c	25 Jul 2002 20:51:08 -0000
@@ -30,6 +30,7 @@
 #include "nautilus-dnd.h"
 
 #include "nautilus-program-choosing.h"
+#include "nautilus-link.h"
 #include <eel/eel-glib-extensions.h>
 #include <eel/eel-string.h>
 #include <eel/eel-vfs-extensions.h>
@@ -730,4 +731,31 @@
 		gtk_timeout_remove (drag_info->auto_scroll_timeout_id);
 		drag_info->auto_scroll_timeout_id = 0;
 	}
+}
+
+gboolean
+nautilus_drag_selection_includes_special_link (GList *selection_list)
+{
+	GList *node;
+	char *uri, *local_path;
+	gboolean link_in_selection;
+
+	link_in_selection = FALSE;
+
+	for (node = selection_list; node != NULL; node = node->next) {
+		uri = ((NautilusDragSelectionItem *) node->data)->uri;
+
+		/* FIXME bugzilla.gnome.org 43020: This does sync. I/O and works only locally. */
+		local_path = gnome_vfs_get_local_path_from_uri (uri);
+		link_in_selection = local_path != NULL
+			&& (nautilus_link_local_is_trash_link (local_path) || nautilus_link_local_is_home_link (local_path) ||
+			nautilus_link_local_is_volume_link (local_path));
+		g_free (local_path);
+		
+		if (link_in_selection) {
+			break;
+		}
+	}
+	
+	return link_in_selection;
 }
Index: libnautilus-private/nautilus-dnd.h
===================================================================
RCS file: /cvs/gnome/nautilus/libnautilus-private/nautilus-dnd.h,v
retrieving revision 1.3
diff -u -r1.3 nautilus-dnd.h
--- libnautilus-private/nautilus-dnd.h	28 Apr 2002 03:08:07 -0000	1.3
+++ libnautilus-private/nautilus-dnd.h	25 Jul 2002 20:51:09 -0000
@@ -139,5 +139,6 @@
 									 gpointer                              user_data);
 void                        nautilus_drag_autoscroll_stop               (NautilusDragInfo                     *drag_info);
 
+gboolean                    nautilus_drag_selection_includes_special_link (GList                              *selection_list);
 
 #endif
Index: libnautilus-private/nautilus-file.c
===================================================================
RCS file: /cvs/gnome/nautilus/libnautilus-private/nautilus-file.c,v
retrieving revision 1.295
diff -u -r1.295 nautilus-file.c
--- libnautilus-private/nautilus-file.c	22 Jul 2002 16:36:40 -0000	1.295
+++ libnautilus-private/nautilus-file.c	25 Jul 2002 20:51:13 -0000
@@ -2359,6 +2359,31 @@
 	return nautilus_file_get_uri (file);
 }
 
+
+char *
+nautilus_file_get_drop_target_uri (NautilusFile *file)
+{
+	char *uri, *target_uri;
+	
+	g_return_val_if_fail (NAUTILUS_IS_FILE (file), NULL);
+
+	uri = nautilus_file_get_uri (file);
+
+	/* Check for Nautilus link */
+	if (nautilus_file_is_nautilus_link (file)) {
+		/* FIXME bugzilla.gnome.org 43020: This does sync. I/O and works only locally. */
+		if (!eel_vfs_has_capability (uri, EEL_VFS_CAPABILITY_IS_REMOTE_AND_SLOW)) {
+			target_uri = nautilus_link_local_get_link_uri (uri);
+			if (target_uri != NULL) {
+				g_free (uri);
+				uri = target_uri;
+			}
+		}
+	}
+
+	return uri;
+}
+
 char *
 nautilus_file_get_custom_icon_uri (NautilusFile *file)
 {
Index: libnautilus-private/nautilus-file.h
===================================================================
RCS file: /cvs/gnome/nautilus/libnautilus-private/nautilus-file.h,v
retrieving revision 1.88
diff -u -r1.88 nautilus-file.h
--- libnautilus-private/nautilus-file.h	9 May 2002 19:49:32 -0000	1.88
+++ libnautilus-private/nautilus-file.h	25 Jul 2002 20:51:13 -0000
@@ -291,6 +291,8 @@
  */
 char *                  nautilus_file_get_activation_uri                (NautilusFile                   *file);
 
+char *                  nautilus_file_get_drop_target_uri               (NautilusFile                   *file);
+
 /* Get custom icon (if specified by metadata or link contents) */
 char *                  nautilus_file_get_custom_icon_uri               (NautilusFile                   *file);
 
Index: libnautilus-private/nautilus-icon-dnd.c
===================================================================
RCS file: /cvs/gnome/nautilus/libnautilus-private/nautilus-icon-dnd.c,v
retrieving revision 1.117
diff -u -r1.117 nautilus-icon-dnd.c
--- libnautilus-private/nautilus-icon-dnd.c	24 May 2002 08:44:23 -0000	1.117
+++ libnautilus-private/nautilus-icon-dnd.c	25 Jul 2002 20:51:15 -0000
@@ -795,34 +795,6 @@
 	return nautilus_icon_container_get_icon_drop_target_uri (container, drop_target_icon);
 }
 
-/* FIXME bugzilla.gnome.org 42485: This belongs in FMDirectoryView, not here. */
-static gboolean
-selection_includes_special_link (GList *selection_list)
-{
-	GList *node;
-	char *uri, *local_path;
-	gboolean link_in_selection;
-
-	link_in_selection = FALSE;
-
-	for (node = selection_list; node != NULL; node = node->next) {
-		uri = ((NautilusDragSelectionItem *) node->data)->uri;
-
-		/* FIXME bugzilla.gnome.org 43020: This does sync. I/O and works only locally. */
-		local_path = gnome_vfs_get_local_path_from_uri (uri);
-		link_in_selection = local_path != NULL
-			&& (nautilus_link_local_is_trash_link (local_path) || nautilus_link_local_is_home_link (local_path) ||
-			nautilus_link_local_is_volume_link (local_path));
-		g_free (local_path);
-		
-		if (link_in_selection) {
-			break;
-		}
-	}
-	
-	return link_in_selection;
-}
-
 static gboolean
 selection_is_image_file (GList *selection_list)
 {
@@ -870,7 +842,7 @@
 	if (context->action == GDK_ACTION_ASK) {
 		/* FIXME bugzilla.gnome.org 42485: This belongs in FMDirectoryView, not here. */
 		/* Check for special case items in selection list */
-		if (selection_includes_special_link (container->details->dnd_info->drag_info.selection_list)) {
+		if (nautilus_drag_selection_includes_special_link (container->details->dnd_info->drag_info.selection_list)) {
 			/* We only want to move the trash */
 			action = GDK_ACTION_MOVE;
 		} else {
Index: libnautilus-private/nautilus-marshal.list
===================================================================
RCS file: /cvs/gnome/nautilus/libnautilus-private/nautilus-marshal.list,v
retrieving revision 1.5
diff -u -r1.5 nautilus-marshal.list
--- libnautilus-private/nautilus-marshal.list	1 Feb 2002 21:11:17 -0000	1.5
+++ libnautilus-private/nautilus-marshal.list	25 Jul 2002 20:51:15 -0000
@@ -1,3 +1,5 @@
+STRING:VOID
+OBJECT:BOXED
 BOOLEAN:POINTER
 INT:POINTER,INT
 INT:POINTER,BOOLEAN
@@ -10,3 +12,4 @@
 VOID:POINTER,STRING
 VOID:STRING,STRING
 VOID:POINTER,POINTER,POINTER,INT,INT,INT
+VOID:POINTER,STRING,UINT,INT,INT
Index: src/file-manager/fm-icon-view.c
===================================================================
RCS file: /cvs/gnome/nautilus/src/file-manager/fm-icon-view.c,v
retrieving revision 1.266
diff -u -r1.266 fm-icon-view.c
--- src/file-manager/fm-icon-view.c	2 Jul 2002 09:32:25 -0000	1.266
+++ src/file-manager/fm-icon-view.c	25 Jul 2002 20:51:18 -0000
@@ -1933,27 +1933,11 @@
 		       		   NautilusFile *file,
 		       		   FMIconView *icon_view)
 {
-	char *uri, *target_uri;
-	
-	g_assert (NAUTILUS_IS_ICON_CONTAINER (container));
-	g_assert (NAUTILUS_IS_FILE (file));
-	g_assert (FM_IS_ICON_VIEW (icon_view));
+	g_return_val_if_fail (NAUTILUS_IS_ICON_CONTAINER (container), NULL);
+	g_return_val_if_fail (NAUTILUS_IS_FILE (file), NULL);
+	g_return_val_if_fail (FM_IS_ICON_VIEW (icon_view), NULL);
 
-	uri = nautilus_file_get_uri (file);
-
-	/* Check for Nautilus link */
-	if (nautilus_file_is_nautilus_link (file)) {
-		/* FIXME bugzilla.gnome.org 43020: This does sync. I/O and works only locally. */
-		if (!eel_vfs_has_capability (uri, EEL_VFS_CAPABILITY_IS_REMOTE_AND_SLOW)) {
-			target_uri = nautilus_link_local_get_link_uri (uri);
-			if (target_uri != NULL) {
-				g_free (uri);
-				uri = target_uri;
-			}
-		}
-	}
-
-	return uri;
+	return nautilus_file_get_drop_target_uri (file);
 }
 
 /* Preferences changed callbacks */
Index: src/file-manager/fm-list-view.c
===================================================================
RCS file: /cvs/gnome/nautilus/src/file-manager/fm-list-view.c,v
retrieving revision 1.178
diff -u -r1.178 fm-list-view.c
--- src/file-manager/fm-list-view.c	2 Jul 2002 20:36:43 -0000	1.178
+++ src/file-manager/fm-list-view.c	25 Jul 2002 20:51:19 -0000
@@ -38,10 +38,14 @@
 #include <gtk/gtktreeview.h>
 #include <libgnome/gnome-i18n.h>
 #include <libgnome/gnome-macros.h>
+#include <libgnomevfs/gnome-vfs-utils.h>
 #include <libnautilus-private/nautilus-directory-background.h>
 #include <libnautilus-private/nautilus-dnd.h>
+#include <libnautilus-private/nautilus-file-dnd.h>
 #include <libnautilus-private/nautilus-global-preferences.h>
+#include <libnautilus-private/nautilus-icon-dnd.h>
 #include <libnautilus-private/nautilus-metadata.h>
+#include <libnautilus-private/nautilus-tree-view-drag-dest.h>
 
 struct FMListViewDetails {
 	GtkTreeView *tree_view;
@@ -56,12 +60,8 @@
 	GtkCellRendererText   *date_modified_cell;
 
 	NautilusZoomLevel zoom_level;
-};
 
-static GtkTargetEntry drag_types [] = {
-	{ NAUTILUS_ICON_DND_GNOME_ICON_LIST_TYPE, 0, NAUTILUS_ICON_DND_GNOME_ICON_LIST },
-	{ NAUTILUS_ICON_DND_URI_LIST_TYPE, 0, NAUTILUS_ICON_DND_URI_LIST },
-	{ NAUTILUS_ICON_DND_URL_TYPE, 0, NAUTILUS_ICON_DND_URL }
+	NautilusTreeViewDragDest *drag_dest;
 };
 
 /*
@@ -287,6 +287,60 @@
 	nautilus_file_unref (file);
 }
 
+static char *
+get_root_uri_callback (NautilusTreeViewDragDest *dest,
+		       gpointer user_data)
+{
+	FMListView *view;
+	
+	view = FM_LIST_VIEW (user_data);
+
+	return fm_directory_view_get_uri (FM_DIRECTORY_VIEW (view));
+}
+
+static NautilusFile *
+get_file_for_path_callback (NautilusTreeViewDragDest *dest,
+			    GtkTreePath *path,
+			    gpointer user_data)
+{
+	FMListView *view;
+	GtkTreeIter iter;
+	NautilusFile *file;
+	
+	view = FM_LIST_VIEW (user_data);
+
+	file = NULL;
+
+	if (gtk_tree_model_get_iter (GTK_TREE_MODEL (view->details->model),
+				     &iter, path)) {
+		gtk_tree_model_get (GTK_TREE_MODEL (view->details->model),
+				    &iter,
+				    FM_LIST_MODEL_FILE_COLUMN,
+				    &file,
+				    -1);
+	}
+
+	return file;
+}
+
+static void
+move_copy_items_callback (NautilusTreeViewDragDest *dest,
+			  const GList *item_uris,
+			  const char *target_uri,
+			  guint action,
+			  int x, 
+			  int y,
+			  gpointer user_data)
+
+{
+	fm_directory_view_move_copy_items (item_uris,
+					   NULL,
+					   target_uri,
+					   action,
+					   x, y,
+					   FM_DIRECTORY_VIEW (user_data));
+}
+
 static void
 create_and_set_up_tree_view (FMListView *view)
 {
@@ -294,6 +348,21 @@
 	GtkTreeViewColumn *column;
 	
 	view->details->tree_view = GTK_TREE_VIEW (gtk_tree_view_new ());
+	view->details->drag_dest = 
+		nautilus_tree_view_drag_dest_new (view->details->tree_view);
+
+	g_signal_connect_object (view->details->drag_dest,
+				 "get_root_uri",
+				 G_CALLBACK (get_root_uri_callback),
+				 view, 0);
+	g_signal_connect_object (view->details->drag_dest,
+				 "get_file_for_path",
+				 G_CALLBACK (get_file_for_path_callback),
+				 view, 0);
+	g_signal_connect_object (view->details->drag_dest,
+				 "move_copy_items",
+				 G_CALLBACK (move_copy_items_callback),
+				 view, 0);
 
 	g_signal_connect_object (gtk_tree_view_get_selection (view->details->tree_view),
 				 "changed",
@@ -317,10 +386,6 @@
 	gtk_tree_selection_set_mode (gtk_tree_view_get_selection (view->details->tree_view), GTK_SELECTION_MULTIPLE);
 	gtk_tree_view_set_rules_hint (view->details->tree_view, TRUE);
 
-	gtk_tree_view_enable_model_drag_source (view->details->tree_view, 0,
-						drag_types, G_N_ELEMENTS (drag_types),
-						GDK_ACTION_MOVE | GDK_ACTION_COPY | GDK_ACTION_LINK);
-
 	/* Create the file name column */
 	cell = gtk_cell_renderer_pixbuf_new ();
 	view->details->pixbuf_cell = (GtkCellRendererPixbuf *)cell;
@@ -819,6 +884,11 @@
 	if (list_view->details->model) {
 		g_object_unref (list_view->details->model);
 		list_view->details->model = NULL;
+	}
+
+	if (list_view->details->drag_dest) {
+		g_object_unref (list_view->details->drag_dest);
+		list_view->details->drag_dest = NULL;
 	}
 
 	G_OBJECT_CLASS (parent_class)->dispose (object);

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */

/*
 * Nautilus
 *
 * Copyright (C) 2002 Sun Microsystems, Inc.
 *
 * 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 this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 * 
 * Author: Dave Camp <dave ximian com>
 */

/* nautilus-tree-view-drag-dest.h: Handles drag and drop for treeviews which 
 *                                 contain a hierarchy of files
 */

#ifndef NAUTILUS_TREE_VIEW_DRAG_DEST_H
#define NAUTILUS_TREE_VIEW_DRAG_DEST_H

#include <gtk/gtktreeview.h>

#include "nautilus-file.h"

G_BEGIN_DECLS

#define NAUTILUS_TYPE_TREE_VIEW_DRAG_DEST	(nautilus_tree_view_drag_dest_get_type ())
#define NAUTILUS_TREE_VIEW_DRAG_DEST(obj)		(G_TYPE_CHECK_INSTANCE_CAST ((obj), NAUTILUS_TYPE_TREE_VIEW_DRAG_DEST, NautilusTreeViewDragDest))
#define NAUTILUS_TREE_VIEW_DRAG_DEST_CLASS(klass)	(G_TYPE_CHECK_CLASS_CAST ((klass), NAUTILUS_TYPE_TREE_VIEW_DRAG_DEST, NautilusTreeViewDragDestClass))
#define NAUTILUS_IS_TREE_VIEW_DRAG_DEST(obj)		(G_TYPE_INSTANCE_CHECK_TYPE ((obj), NAUTILUS_TYPE_TREE_VIEW_DRAG_DEST))
#define NAUTILUS_IS_TREE_VIEW_DRAG_DEST_CLASS(klass)	(G_TYPE_CLASS_CHECK_CLASS_TYPE ((klass), NAUTILUS_TYPE_TREE_VIEW_DRAG_DEST))

typedef struct _NautilusTreeViewDragDest        NautilusTreeViewDragDest;
typedef struct _NautilusTreeViewDragDestClass   NautilusTreeViewDragDestClass;
typedef struct _NautilusTreeViewDragDestDetails NautilusTreeViewDragDestDetails;

struct _NautilusTreeViewDragDest {
	GObject parent;
	
	NautilusTreeViewDragDestDetails *details;
};

struct _NautilusTreeViewDragDestClass {
	GObjectClass parent;
	
	char *(*get_root_uri) (NautilusTreeViewDragDest *dest);
	NautilusFile *(*get_file_for_path) (NautilusTreeViewDragDest *dest,
					    GtkTreePath *path);
	void (*move_copy_items) (NautilusTreeViewDragDest *dest,
				 const GList *item_uris,
				 const char *target_uri,
				 guint action,
				 int x,
				 int y);
				 
};

GType                     nautilus_tree_view_drag_dest_get_type (void);
NautilusTreeViewDragDest *nautilus_tree_view_drag_dest_new      (GtkTreeView *tree_view);

G_END_DECLS

#endif

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */

/*
 * Nautilus
 *
 * Copyright (C) 2002 Sun Microsystems, Inc.
 *
 * 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 this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 * 
 * Author: Dave Camp <dave ximian com>
 */

/* nautilus-tree-view-drag-dest.c: Handles drag and drop for treeviews which 
 *                                 contain a hierarchy of files
 */

#include <config.h>
#include "nautilus-tree-view-drag-dest.h"

#include <eel/eel-gtk-macros.h>
#include <gtk/gtkmain.h>
#include <gtk/gtksignal.h>
#include <libgnome/gnome-macros.h>
#include <libgnomevfs/gnome-vfs-utils.h>
#include "nautilus-file-dnd.h"
#include "nautilus-icon-dnd.h"
#include "nautilus-link.h"
#include "nautilus-marshal.h"

#define AUTO_SCROLL_MARGIN 20

struct _NautilusTreeViewDragDestDetails {
	GtkTreeView *tree_view;

	gboolean drop_occurred;

	gboolean have_drag_data;
	guint drag_type;
	GtkSelectionData *drag_data;
	GList *drag_list;

	guint highlight_id;
	guint scroll_id;
};

enum {
	GET_ROOT_URI,
	GET_FILE_FOR_PATH,
	MOVE_COPY_ITEMS,
	LAST_SIGNAL
};

static void nautilus_tree_view_drag_dest_instance_init (NautilusTreeViewDragDest      *dest);
static void nautilus_tree_view_drag_dest_class_init    (NautilusTreeViewDragDestClass *class);

static guint signals[LAST_SIGNAL];

GNOME_CLASS_BOILERPLATE (NautilusTreeViewDragDest,
			 nautilus_tree_view_drag_dest,
			 GObject, G_TYPE_OBJECT);

static GtkTargetEntry drag_types [] = {
	{ NAUTILUS_ICON_DND_GNOME_ICON_LIST_TYPE, 0, NAUTILUS_ICON_DND_GNOME_ICON_LIST },
	{ NAUTILUS_ICON_DND_URI_LIST_TYPE, 0, NAUTILUS_ICON_DND_URI_LIST },
	{ NAUTILUS_ICON_DND_URL_TYPE, 0, NAUTILUS_ICON_DND_URL }
	/* FIXME: Should handle emblems once the list view supports them */
};


static void
gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
{
	GdkRectangle visible_rect;
	GtkAdjustment *vadjustment;
	GdkWindow *window;
	int y;
	int offset;
	float value;
	
	window = gtk_tree_view_get_bin_window (tree_view);
	vadjustment = gtk_tree_view_get_vadjustment (tree_view);
	
	gdk_window_get_pointer (window, NULL, &y, NULL);
	
	y += vadjustment->value;

	gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
	
	offset = y - (visible_rect.y + 2 * AUTO_SCROLL_MARGIN);
	if (offset > 0) {
		offset = y - (visible_rect.y + visible_rect.height - 2 * AUTO_SCROLL_MARGIN);
		if (offset < 0) {
			return;
		}
	}

	value = CLAMP (vadjustment->value + offset, 0.0,
		       vadjustment->upper - vadjustment->page_size);
	gtk_adjustment_set_value (vadjustment, value);
}

static int
scroll_timeout (gpointer data)
{
	GtkTreeView *tree_view = GTK_TREE_VIEW (data);
	
	gtk_tree_view_vertical_autoscroll (tree_view);

	return TRUE;
}

static void
remove_scroll_timeout (NautilusTreeViewDragDest *dest)
{
	if (dest->details->scroll_id) {
		gtk_timeout_remove (dest->details->scroll_id);
		dest->details->scroll_id = 0;
	}
}

static gboolean
highlight_expose (GtkWidget *widget,
		  GdkEventExpose *event,
		  gpointer data)
{
	GdkWindow *bin_window;
	int width;
	int height;

	if (GTK_WIDGET_DRAWABLE (widget)) {
		bin_window = 
			gtk_tree_view_get_bin_window (GTK_TREE_VIEW (widget));
		
		gdk_drawable_get_size (bin_window, &width, &height);
		
		gtk_paint_focus (widget->style,
				 bin_window,
				 GTK_WIDGET_STATE (widget),
				 NULL,
				 widget,
				 "treeview-drop-indicator",
				 0, 0, width, height);
	}
	
	return FALSE;
}

static void
set_widget_highlight (NautilusTreeViewDragDest *dest, gboolean highlight)
{
	if (!highlight && dest->details->highlight_id) {
		g_signal_handler_disconnect (dest->details->tree_view,
					     dest->details->highlight_id);
		dest->details->highlight_id = 0;
	}
	
	if (highlight && !dest->details->highlight_id) {
		dest->details->highlight_id = 
			g_signal_connect_object (dest->details->tree_view,
						 "expose_event",
						 G_CALLBACK (highlight_expose),
						 dest,
						 G_CONNECT_AFTER);
	}
	gtk_widget_queue_draw (GTK_WIDGET (dest->details->tree_view));
}

static void
set_drag_dest_row (NautilusTreeViewDragDest *dest,
		   GtkTreePath *path)
{
	if (path) {
		set_widget_highlight (dest, FALSE);
		gtk_tree_view_set_drag_dest_row
			(dest->details->tree_view,
			 path,
			 GTK_TREE_VIEW_DROP_INTO_OR_BEFORE);
	} else {
		set_widget_highlight (dest, TRUE);
		gtk_tree_view_set_drag_dest_row (dest->details->tree_view, 
						 NULL, 
						 0);
	}
}

static void
clear_drag_dest_row (NautilusTreeViewDragDest *dest)
{
	gtk_tree_view_set_drag_dest_row (dest->details->tree_view, NULL, 0);
	set_widget_highlight (dest, FALSE);
}

static void
get_drag_data (NautilusTreeViewDragDest *dest,
	       GdkDragContext *context, 
	       guint32 time)
{
	GdkAtom target;
	
	target = gtk_drag_dest_find_target (GTK_WIDGET (dest->details->tree_view), 
					    context, 
					    NULL);

	gtk_drag_get_data (GTK_WIDGET (dest->details->tree_view),
			   context, target, time);
}

static void
free_drag_data (NautilusTreeViewDragDest *dest)
{
	dest->details->have_drag_data = FALSE;

	if (dest->details->drag_data) {
		gtk_selection_data_free (dest->details->drag_data);
		dest->details->drag_data = NULL;
	}

	if (dest->details->drag_list) {
		nautilus_drag_destroy_selection_list (dest->details->drag_list);
		dest->details->drag_list = NULL;
	}
}

static char *
get_root_uri (NautilusTreeViewDragDest *dest)
{
	char *uri;
	
	g_signal_emit (dest, signals[GET_ROOT_URI], 0, &uri);
	
	return uri;
}

static NautilusFile *
file_for_path (NautilusTreeViewDragDest *dest, GtkTreePath *path)
{
	NautilusFile *file;
	char *uri;
	
	if (path) {
		g_signal_emit (dest, signals[GET_FILE_FOR_PATH], 0, path, &file);
	} else {
		uri = get_root_uri (dest);
		
		file = nautilus_file_get (uri);
		
		g_free (uri);
	}
	
	return file;
}

static GtkTreePath *
get_drop_path (NautilusTreeViewDragDest *dest,
	       GtkTreePath *path)
{
	NautilusFile *file;
	GtkTreePath *ret;
	
	if (!path) {
		return NULL;
	}

	file = file_for_path (dest, path);
	
	ret = NULL;

	if (!file || !nautilus_drag_can_accept_items (file, dest->details->drag_list)){
		if (gtk_tree_path_get_depth (path) == 1) {
			ret = NULL;
		} else {
			ret = gtk_tree_path_copy (path);
			gtk_tree_path_up (ret);
		}
	} else {
		ret = gtk_tree_path_copy (path);
	}

	nautilus_file_unref (file);
	
	return ret;
}

static char *
get_drop_target (NautilusTreeViewDragDest *dest, 
		 GtkTreePath *path)
{
	NautilusFile *file;
	char *target;

	file = file_for_path (dest, path);
	target = nautilus_file_get_drop_target_uri (file);
	nautilus_file_unref (file);
	
	return target;
}

static guint
get_drop_action (NautilusTreeViewDragDest *dest, 
		 GdkDragContext *context,
		 GtkTreePath *path)
{
	char *drop_target;
	guint action;
	
	if (!dest->details->have_drag_data || !dest->details->drag_list) {
		return 0;
	}

	switch (dest->details->drag_type) {
	case NAUTILUS_ICON_DND_GNOME_ICON_LIST :
		drop_target = get_drop_target (dest, path);
		
		if (!drop_target) {
			return 0;
		}

		nautilus_drag_default_drop_action_for_icons
			(context,
			 drop_target,
			 dest->details->drag_list,
			 &action);

		g_free (drop_target);
		
		return action;
	case NAUTILUS_ICON_DND_URI_LIST :
	case NAUTILUS_ICON_DND_URL :
		return context->suggested_action;
	}

	return 0;
}

static gboolean
drag_motion_callback (GtkWidget *widget,
		      GdkDragContext *context,
		      int x,
		      int y,
		      guint32 time,
		      gpointer data)
{
	NautilusTreeViewDragDest *dest;
	GtkTreePath *path;
	GtkTreePath *drop_path;
	GtkTreeViewDropPosition pos;
	guint action;

	dest = NAUTILUS_TREE_VIEW_DRAG_DEST (data);

	gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
					   x, y, &path, &pos);
	

	if (!dest->details->have_drag_data) {
		get_drag_data (dest, context, time);
	}
	drop_path = get_drop_path (dest, path);
	
	action = get_drop_action (dest, context, drop_path);
	
	if (action) {
		set_drag_dest_row (dest, drop_path);
	} else {
		clear_drag_dest_row (dest);
	}
	
	if (path) {
		gtk_tree_path_free (path);
	}
	
	if (drop_path) {
		gtk_tree_path_free (drop_path);
	}
	
	if (dest->details->scroll_id == 0) {
		dest->details->scroll_id = 
			gtk_timeout_add (150, 
					 scroll_timeout, 
					 dest->details->tree_view);
	}

	gdk_drag_status (context, action, time);

	return TRUE;
}

static void
drag_leave_callback (GtkWidget *widget,
		     GdkDragContext *context,
		     guint32 time,
		     gpointer data)
{
	NautilusTreeViewDragDest *dest;

	dest = NAUTILUS_TREE_VIEW_DRAG_DEST (data);

	clear_drag_dest_row (dest);

	free_drag_data (dest);

	remove_scroll_timeout (dest);
}

static void
receive_uris (NautilusTreeViewDragDest *dest,
	      GdkDragContext *context,
	      GList *source_uris,
	      int x, int y)
{
	char *drop_target;
	GtkTreePath *path;
	GtkTreePath *drop_path;
	GtkTreeViewDropPosition pos;
	GdkDragAction action;

	gtk_tree_view_get_dest_row_at_pos (dest->details->tree_view, x, y, 
					   &path, &pos);

	drop_path = get_drop_path (dest, path);

	drop_target = get_drop_target (dest, drop_path);

	if (context->action == GDK_ACTION_ASK) {
		if (nautilus_drag_selection_includes_special_link (dest->details->drag_list)) {
			/* We only want to move the trash */
			action = GDK_ACTION_MOVE;
		} else {
			action = GDK_ACTION_MOVE | GDK_ACTION_COPY | GDK_ACTION_LINK;
		}
		context->action = nautilus_drag_drop_action_ask (action);
	}

	/* We only want to copy external uris */
	if (dest->details->drag_type == NAUTILUS_ICON_DND_URI_LIST) {
		action = GDK_ACTION_COPY;
	}

	if (context->action > 0) {
		g_signal_emit (dest, signals[MOVE_COPY_ITEMS], 0,
			       source_uris, 
			       drop_target,
			       context->action,
			       x, y);
	}

	if (path) {
		gtk_tree_path_free (path);
	}

	if (drop_path) {
		gtk_tree_path_free (drop_path);
	}

	g_free (drop_target);
}

static void
receive_dropped_icons (NautilusTreeViewDragDest *dest,
		       GdkDragContext *context,
		       int x, int y)
{
	GList *source_uris;
	GList *l;

	/* FIXME: ignore local only moves */

	if (!dest->details->drag_list) {
		return;
	}
	
	source_uris = NULL;
	for (l = dest->details->drag_list; l != NULL; l = l->next) {
		source_uris = g_list_prepend (source_uris,
					      ((NautilusDragSelectionItem *)l->data)->uri);
	}

	source_uris = g_list_reverse (source_uris);

	receive_uris (dest, context, source_uris, x, y);
	
	g_list_free (source_uris);
}

static void
receive_dropped_uri_list (NautilusTreeViewDragDest *dest,
			  GdkDragContext *context,
			  int x, int y)
{
	GList *source_uris;
	
	if (!dest->details->drag_data) {
		return;
	}

	source_uris = nautilus_icon_dnd_uri_list_extract_uris ((char*)dest->details->drag_data->data);
	
	receive_uris (dest, context, source_uris, x, y);
	
	nautilus_icon_dnd_uri_list_free_strings (source_uris);
}

static gboolean
drag_data_received_callback (GtkWidget *widget,
			     GdkDragContext *context,
			     int x,
			     int y,
			     GtkSelectionData *selection_data,
			     guint info,
			     guint32 time,
			     gpointer data)
{
	NautilusTreeViewDragDest *dest;
	gboolean success;
	
	dest = NAUTILUS_TREE_VIEW_DRAG_DEST (data);

	if (!dest->details->have_drag_data) {
		dest->details->have_drag_data = TRUE;
		dest->details->drag_type = info;
		dest->details->drag_data = 
			gtk_selection_data_copy (selection_data);
		if (info == NAUTILUS_ICON_DND_GNOME_ICON_LIST) {
			dest->details->drag_list = 
				nautilus_drag_build_selection_list (selection_data);
		}
	}

	if (dest->details->drop_occurred) {
		success = FALSE;
		switch (info) {
		case NAUTILUS_ICON_DND_GNOME_ICON_LIST :
			receive_dropped_icons (dest, context, x, y);
			success = TRUE;
			break;
		case NAUTILUS_ICON_DND_URI_LIST :
		case NAUTILUS_ICON_DND_URL :
			receive_dropped_uri_list (dest, context, x, y);
			success = TRUE;
			break;
		}

		dest->details->drop_occurred = FALSE;
		free_drag_data (dest);
		gtk_drag_finish (context, success, FALSE, time);
	}

	/* appease GtkTreeView by preventing its drag_data_receive
	 * from being called */
	g_signal_stop_emission_by_name (dest->details->tree_view,
					"drag_data_received");

	return TRUE;
}

static gboolean
drag_drop_callback (GtkWidget *widget,
		    GdkDragContext *context,
		    int x, 
		    int y,
		    guint32 time,
		    gpointer data)
{
	NautilusTreeViewDragDest *dest;

	dest = NAUTILUS_TREE_VIEW_DRAG_DEST (data);

	dest->details->drop_occurred = TRUE;

	get_drag_data (dest, context, time);
	remove_scroll_timeout (dest);
	clear_drag_dest_row (dest);
	
	return TRUE;
}

static void
nautilus_tree_view_drag_dest_finalize (GObject *object)
{
	NautilusTreeViewDragDest *dest;
	
	dest = NAUTILUS_TREE_VIEW_DRAG_DEST (object);

	free_drag_data (dest);

	g_free (dest->details);

	EEL_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
}

static void
nautilus_tree_view_drag_dest_instance_init (NautilusTreeViewDragDest *dest)
{
	dest->details = g_new0 (NautilusTreeViewDragDestDetails, 1);
}

static void
nautilus_tree_view_drag_dest_class_init (NautilusTreeViewDragDestClass *class)
{
	GObjectClass *gobject_class;

	gobject_class = G_OBJECT_CLASS (class);
	
	gobject_class->finalize = nautilus_tree_view_drag_dest_finalize;

	signals[GET_ROOT_URI] = 
		g_signal_new ("get_root_uri",
			      G_TYPE_FROM_CLASS (class),
			      G_SIGNAL_RUN_LAST,
			      G_STRUCT_OFFSET (NautilusTreeViewDragDestClass,
					       get_root_uri),
			      NULL, NULL,
			      nautilus_marshal_STRING__VOID,
			      G_TYPE_STRING, 0);
	signals[GET_FILE_FOR_PATH] = 
		g_signal_new ("get_file_for_path",
			      G_TYPE_FROM_CLASS (class),
			      G_SIGNAL_RUN_LAST,
			      G_STRUCT_OFFSET (NautilusTreeViewDragDestClass,
					       get_file_for_path),
			      NULL, NULL,
			      nautilus_marshal_OBJECT__BOXED,
			      NAUTILUS_TYPE_FILE, 1,
			      GTK_TYPE_TREE_PATH);
	signals[MOVE_COPY_ITEMS] =
		g_signal_new ("move_copy_items",
			      G_TYPE_FROM_CLASS (class),
			      G_SIGNAL_RUN_LAST,
			      G_STRUCT_OFFSET (NautilusTreeViewDragDestClass,
					       move_copy_items),
			      NULL, NULL,
			      
			      nautilus_marshal_VOID__POINTER_STRING_UINT_INT_INT,
			      G_TYPE_NONE, 5,
			      G_TYPE_POINTER,
			      G_TYPE_STRING,
			      G_TYPE_UINT,
			      G_TYPE_INT,
			      G_TYPE_INT);
}

NautilusTreeViewDragDest *
nautilus_tree_view_drag_dest_new (GtkTreeView *tree_view)
{
	NautilusTreeViewDragDest *dest;
	
	dest = g_object_new (NAUTILUS_TYPE_TREE_VIEW_DRAG_DEST, NULL);

	dest->details->tree_view = tree_view;
	
	gtk_drag_dest_set (GTK_WIDGET (tree_view),
			   0, drag_types, G_N_ELEMENTS (drag_types),
			   GDK_ACTION_MOVE | GDK_ACTION_COPY | GDK_ACTION_LINK | GDK_ACTION_ASK);	
	
	g_signal_connect_object (tree_view,
				 "drag_motion",
				 G_CALLBACK (drag_motion_callback),
				 dest, 0);
	g_signal_connect_object (tree_view,
				 "drag_leave",
				 G_CALLBACK (drag_leave_callback),
				 dest, 0);
	g_signal_connect_object (tree_view,
				 "drag_drop",
				 G_CALLBACK (drag_drop_callback),
				 dest, 0);
	g_signal_connect_object (tree_view, 
				 "drag_data_received",
				 G_CALLBACK (drag_data_received_callback),
				 dest, 0);
	
	return dest;
}
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