diff options
Diffstat (limited to 'src/nautilus-tree-view-drag-dest.c')
| -rw-r--r-- | src/nautilus-tree-view-drag-dest.c | 1265 |
1 files changed, 1265 insertions, 0 deletions
diff --git a/src/nautilus-tree-view-drag-dest.c b/src/nautilus-tree-view-drag-dest.c new file mode 100644 index 000000000..97257dd94 --- /dev/null +++ b/src/nautilus-tree-view-drag-dest.c @@ -0,0 +1,1265 @@ + +/* + * 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, see <http://www.gnu.org/licenses/>. + * + * Author: Dave Camp <dave@ximian.com> + * XDS support: Benedikt Meurer <benny@xfce.org> (adapted by Amos Brocco <amos.brocco@unifr.ch>) + */ + +/* 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 "nautilus-dnd.h" +#include "nautilus-file-changes-queue.h" +#include "nautilus-global-preferences.h" +#include "nautilus-link.h" + +#include <gtk/gtk.h> + +#include <stdio.h> +#include <string.h> + +#define DEBUG_FLAG NAUTILUS_DEBUG_LIST_VIEW +#include "nautilus-debug.h" + +#define AUTO_SCROLL_MARGIN 20 +#define HOVER_EXPAND_TIMEOUT 1 + +struct _NautilusTreeViewDragDestDetails { + GtkTreeView *tree_view; + + gboolean drop_occurred; + + gboolean have_drag_data; + guint drag_type; + GtkSelectionData *drag_data; + GList *drag_list; + + guint hover_id; + guint highlight_id; + guint scroll_id; + guint expand_id; + + char *direct_save_uri; + char *target_uri; +}; + +enum { + GET_ROOT_URI, + GET_FILE_FOR_PATH, + MOVE_COPY_ITEMS, + HANDLE_NETSCAPE_URL, + HANDLE_URI_LIST, + HANDLE_TEXT, + HANDLE_RAW, + HANDLE_HOVER, + LAST_SIGNAL +}; + +static guint signals[LAST_SIGNAL]; + +G_DEFINE_TYPE (NautilusTreeViewDragDest, nautilus_tree_view_drag_dest, + G_TYPE_OBJECT); + +static const GtkTargetEntry drag_types [] = { + { NAUTILUS_ICON_DND_GNOME_ICON_LIST_TYPE, 0, NAUTILUS_ICON_DND_GNOME_ICON_LIST }, + /* prefer "_NETSCAPE_URL" over "text/uri-list" to satisfy web browsers. */ + { NAUTILUS_ICON_DND_NETSCAPE_URL_TYPE, 0, NAUTILUS_ICON_DND_NETSCAPE_URL }, + { NAUTILUS_ICON_DND_URI_LIST_TYPE, 0, NAUTILUS_ICON_DND_URI_LIST }, + { NAUTILUS_ICON_DND_XDNDDIRECTSAVE_TYPE, 0, NAUTILUS_ICON_DND_XDNDDIRECTSAVE }, /* XDS Protocol Type */ + { NAUTILUS_ICON_DND_RAW_TYPE, 0, NAUTILUS_ICON_DND_RAW } +}; + + +static void +gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view) +{ + GdkRectangle visible_rect; + GtkAdjustment *vadjustment; + GdkDisplay *display; + GdkSeat *seat; + GdkDevice *pointer; + GdkWindow *window; + int y; + int offset; + float value; + + window = gtk_tree_view_get_bin_window (tree_view); + vadjustment = gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (tree_view)); + + display = gtk_widget_get_display (GTK_WIDGET (tree_view)); + seat = gdk_display_get_default_seat (display); + pointer = gdk_seat_get_pointer (seat); + gdk_window_get_device_position (window, pointer, + NULL, &y, NULL); + + y += gtk_adjustment_get_value (vadjustment); + + 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 (gtk_adjustment_get_value (vadjustment) + offset, 0.0, + gtk_adjustment_get_upper (vadjustment) - gtk_adjustment_get_page_size (vadjustment)); + 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) { + g_source_remove (dest->details->scroll_id); + dest->details->scroll_id = 0; + } +} + +static int +expand_timeout (gpointer data) +{ + GtkTreeView *tree_view; + GtkTreePath *drop_path; + + tree_view = GTK_TREE_VIEW (data); + + gtk_tree_view_get_drag_dest_row (tree_view, &drop_path, NULL); + + if (drop_path) { + gtk_tree_view_expand_row (tree_view, drop_path, FALSE); + gtk_tree_path_free (drop_path); + } + + return FALSE; +} + +static void +remove_expand_timer (NautilusTreeViewDragDest *dest) +{ + if (dest->details->expand_id) { + g_source_remove (dest->details->expand_id); + dest->details->expand_id = 0; + } +} + +static gboolean +highlight_draw (GtkWidget *widget, + cairo_t *cr, + gpointer data) +{ + GdkWindow *bin_window; + int width; + int height; + GtkStyleContext *style; + + /* FIXMEchpe: is bin window right here??? */ + bin_window = gtk_tree_view_get_bin_window (GTK_TREE_VIEW (widget)); + + width = gdk_window_get_width (bin_window); + height = gdk_window_get_height (bin_window); + + style = gtk_widget_get_style_context (widget); + + gtk_style_context_save (style); + gtk_style_context_add_class (style, "treeview-drop-indicator"); + + gtk_render_focus (style, + cr, + 0, 0, width, height); + + gtk_style_context_restore (style); + + 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; + gtk_widget_queue_draw (GTK_WIDGET (dest->details->tree_view)); + } + + if (highlight && !dest->details->highlight_id) { + dest->details->highlight_id = + g_signal_connect_object (dest->details->tree_view, + "draw", + G_CALLBACK (highlight_draw), + dest, 0); + 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 gboolean +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); + + if (target == GDK_NONE) { + return FALSE; + } + + if (target == gdk_atom_intern (NAUTILUS_ICON_DND_XDNDDIRECTSAVE_TYPE, FALSE) && + !dest->details->drop_occurred) { + dest->details->drag_type = NAUTILUS_ICON_DND_XDNDDIRECTSAVE; + dest->details->have_drag_data = TRUE; + return TRUE; + } + + gtk_drag_get_data (GTK_WIDGET (dest->details->tree_view), + context, target, time); + + return TRUE; +} + +static void +remove_hover_timer (NautilusTreeViewDragDest *dest) +{ + if (dest->details->hover_id != 0) { + g_source_remove (dest->details->hover_id); + dest->details->hover_id = 0; + } +} + +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; + } + + g_free (dest->details->direct_save_uri); + dest->details->direct_save_uri = NULL; + + g_free (dest->details->target_uri); + dest->details->target_uri = NULL; + + remove_hover_timer (dest); + remove_expand_timer (dest); +} + +static gboolean +hover_timer (gpointer user_data) +{ + NautilusTreeViewDragDest *dest = user_data; + + dest->details->hover_id = 0; + + g_signal_emit (dest, signals[HANDLE_HOVER], 0, dest->details->target_uri); + + return FALSE; +} + +static void +check_hover_timer (NautilusTreeViewDragDest *dest, + const char *uri) +{ + GtkSettings *settings; + guint timeout; + + if (g_strcmp0 (uri, dest->details->target_uri) == 0) { + return; + } + remove_hover_timer (dest); + + settings = gtk_widget_get_settings (GTK_WIDGET (dest->details->tree_view)); + g_object_get (settings, "gtk-timeout-expand", &timeout, NULL); + + g_free (dest->details->target_uri); + dest->details->target_uri = NULL; + + if (uri != NULL) { + dest->details->target_uri = g_strdup (uri); + dest->details->hover_id = + gdk_threads_add_timeout (timeout, + hover_timer, + dest); + } +} + +static void +check_expand_timer (NautilusTreeViewDragDest *dest, + GtkTreePath *drop_path, + GtkTreePath *old_drop_path) +{ + GtkTreeModel *model; + GtkTreeIter drop_iter; + + model = gtk_tree_view_get_model (dest->details->tree_view); + + if (drop_path == NULL || + (old_drop_path != NULL && gtk_tree_path_compare (old_drop_path, drop_path) != 0)) { + remove_expand_timer (dest); + } + + if (dest->details->expand_id == 0 && + drop_path != NULL) { + gtk_tree_model_get_iter (model, &drop_iter, drop_path); + if (gtk_tree_model_iter_has_child (model, &drop_iter)) { + dest->details->expand_id = + g_timeout_add_seconds (HOVER_EXPAND_TIMEOUT, + expand_timeout, + dest->details->tree_view); + } + } +} + +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 = NULL; + if (uri != NULL) { + file = nautilus_file_get_by_uri (uri); + } + + g_free (uri); + } + + return file; +} + +static char * +get_drop_target_uri_for_path (NautilusTreeViewDragDest *dest, + GtkTreePath *path) +{ + NautilusFile *file; + char *target = NULL; + gboolean can; + + file = file_for_path (dest, path); + if (file == NULL) { + return NULL; + } + can = nautilus_drag_can_accept_info (file, + dest->details->drag_type, + dest->details->drag_list); + if (can) { + target = nautilus_file_get_target_uri (file); + } + nautilus_file_unref (file); + + return target; +} + +static void +check_hover_expand_timer (NautilusTreeViewDragDest *dest, + GtkTreePath *path, + GtkTreePath *drop_path, + GtkTreePath *old_drop_path) +{ + gboolean use_tree = g_settings_get_boolean (nautilus_list_view_preferences, + NAUTILUS_PREFERENCES_LIST_VIEW_USE_TREE); + + if (use_tree) { + check_expand_timer (dest, drop_path, old_drop_path); + } else { + char *uri; + uri = get_drop_target_uri_for_path (dest, path); + check_hover_timer (dest, uri); + g_free (uri); + } +} + +static GtkTreePath * +get_drop_path (NautilusTreeViewDragDest *dest, + GtkTreePath *path) +{ + NautilusFile *file; + GtkTreePath *ret; + + if (!path || !dest->details->have_drag_data) { + return NULL; + } + + ret = gtk_tree_path_copy (path); + file = file_for_path (dest, ret); + + /* Go up the tree until we find a file that can accept a drop */ + while (file == NULL /* dummy row */ || + !nautilus_drag_can_accept_info (file, + dest->details->drag_type, + dest->details->drag_list)) { + if (gtk_tree_path_get_depth (ret) == 1) { + gtk_tree_path_free (ret); + ret = NULL; + break; + } else { + gtk_tree_path_up (ret); + + nautilus_file_unref (file); + file = file_for_path (dest, ret); + } + } + nautilus_file_unref (file); + + return ret; +} + +static guint +get_drop_action (NautilusTreeViewDragDest *dest, + GdkDragContext *context, + GtkTreePath *path) +{ + char *drop_target; + int action; + + if (!dest->details->have_drag_data || + (dest->details->drag_type == NAUTILUS_ICON_DND_GNOME_ICON_LIST && + dest->details->drag_list == NULL)) { + return 0; + } + + drop_target = get_drop_target_uri_for_path (dest, path); + if (drop_target == NULL) { + return 0; + } + + action = 0; + switch (dest->details->drag_type) { + case NAUTILUS_ICON_DND_GNOME_ICON_LIST : + nautilus_drag_default_drop_action_for_icons + (context, + drop_target, + dest->details->drag_list, + 0, + &action); + break; + case NAUTILUS_ICON_DND_NETSCAPE_URL: + action = nautilus_drag_default_drop_action_for_netscape_url (context); + break; + case NAUTILUS_ICON_DND_URI_LIST : + action = gdk_drag_context_get_suggested_action (context); + break; + case NAUTILUS_ICON_DND_TEXT: + case NAUTILUS_ICON_DND_RAW: + case NAUTILUS_ICON_DND_XDNDDIRECTSAVE: + action = GDK_ACTION_COPY; + break; + } + + g_free (drop_target); + + return action; +} + +static gboolean +drag_motion_callback (GtkWidget *widget, + GdkDragContext *context, + int x, + int y, + guint32 time, + gpointer data) +{ + NautilusTreeViewDragDest *dest; + GtkTreePath *path; + GtkTreePath *drop_path, *old_drop_path; + GtkTreeViewDropPosition pos; + GdkWindow *bin_window; + guint action; + gboolean res = TRUE; + + dest = NAUTILUS_TREE_VIEW_DRAG_DEST (data); + + gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget), + x, y, &path, &pos); + if (pos == GTK_TREE_VIEW_DROP_BEFORE || + pos == GTK_TREE_VIEW_DROP_AFTER) { + gtk_tree_path_free (path); + path = NULL; + } + + if (!dest->details->have_drag_data) { + res = get_drag_data (dest, context, time); + } + + if (!res) { + return FALSE; + } + + drop_path = get_drop_path (dest, path); + + action = 0; + bin_window = gtk_tree_view_get_bin_window (GTK_TREE_VIEW (widget)); + if (bin_window != NULL) { + int bin_x, bin_y; + gdk_window_get_position (bin_window, &bin_x, &bin_y); + if (bin_y <= y) { + /* ignore drags on the header */ + action = get_drop_action (dest, context, drop_path); + } + } + + gtk_tree_view_get_drag_dest_row (GTK_TREE_VIEW (widget), &old_drop_path, + NULL); + + if (action) { + set_drag_dest_row (dest, drop_path); + check_hover_expand_timer (dest, path, drop_path, old_drop_path); + } else { + clear_drag_dest_row (dest); + remove_hover_timer (dest); + remove_expand_timer (dest); + } + + if (path) { + gtk_tree_path_free (path); + } + + if (drop_path) { + gtk_tree_path_free (drop_path); + } + + if (old_drop_path) { + gtk_tree_path_free (old_drop_path); + } + + if (dest->details->scroll_id == 0) { + dest->details->scroll_id = + g_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 char * +get_drop_target_uri_at_pos (NautilusTreeViewDragDest *dest, int x, int y) +{ + char *drop_target = NULL; + GtkTreePath *path; + GtkTreePath *drop_path; + GtkTreeViewDropPosition pos; + + gtk_tree_view_get_dest_row_at_pos (dest->details->tree_view, x, y, + &path, &pos); + if (pos == GTK_TREE_VIEW_DROP_BEFORE || + pos == GTK_TREE_VIEW_DROP_AFTER) { + gtk_tree_path_free (path); + path = NULL; + } + + drop_path = get_drop_path (dest, path); + + drop_target = get_drop_target_uri_for_path (dest, drop_path); + + if (path != NULL) { + gtk_tree_path_free (path); + } + + if (drop_path != NULL) { + gtk_tree_path_free (drop_path); + } + + return drop_target; +} + +static void +receive_uris (NautilusTreeViewDragDest *dest, + GdkDragContext *context, + GList *source_uris, + int x, int y) +{ + char *drop_target; + GdkDragAction action, real_action; + + drop_target = get_drop_target_uri_at_pos (dest, x, y); + g_assert (drop_target != NULL); + + real_action = gdk_drag_context_get_selected_action (context); + + if (real_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; + } + real_action = nautilus_drag_drop_action_ask + (GTK_WIDGET (dest->details->tree_view), action); + } + + /* We only want to copy external uris */ + if (dest->details->drag_type == NAUTILUS_ICON_DND_URI_LIST) { + real_action = GDK_ACTION_COPY; + } + + if (real_action > 0) { + if (!nautilus_drag_uris_local (drop_target, source_uris) + || real_action != GDK_ACTION_MOVE) { + g_signal_emit (dest, signals[MOVE_COPY_ITEMS], 0, + source_uris, + drop_target, + real_action, + x, y); + } + } + + 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) +{ + char *drop_target; + + if (!dest->details->drag_data) { + return; + } + + drop_target = get_drop_target_uri_at_pos (dest, x, y); + g_assert (drop_target != NULL); + + g_signal_emit (dest, signals[HANDLE_URI_LIST], 0, + (char*) gtk_selection_data_get_data (dest->details->drag_data), + drop_target, + gdk_drag_context_get_selected_action (context), + x, y); + + g_free (drop_target); +} + +static void +receive_dropped_text (NautilusTreeViewDragDest *dest, + GdkDragContext *context, + int x, int y) +{ + char *drop_target; + guchar *text; + + if (!dest->details->drag_data) { + return; + } + + drop_target = get_drop_target_uri_at_pos (dest, x, y); + g_assert (drop_target != NULL); + + text = gtk_selection_data_get_text (dest->details->drag_data); + g_signal_emit (dest, signals[HANDLE_TEXT], 0, + (char *) text, drop_target, + gdk_drag_context_get_selected_action (context), + x, y); + + g_free (text); + g_free (drop_target); +} + +static void +receive_dropped_raw (NautilusTreeViewDragDest *dest, + const char *raw_data, int length, + GdkDragContext *context, + int x, int y) +{ + char *drop_target; + + if (!dest->details->drag_data) { + return; + } + + drop_target = get_drop_target_uri_at_pos (dest, x, y); + g_assert (drop_target != NULL); + + g_signal_emit (dest, signals[HANDLE_RAW], 0, + raw_data, length, drop_target, + dest->details->direct_save_uri, + gdk_drag_context_get_selected_action (context), + x, y); + + g_free (drop_target); +} + +static void +receive_dropped_netscape_url (NautilusTreeViewDragDest *dest, + GdkDragContext *context, + int x, int y) +{ + char *drop_target; + + if (!dest->details->drag_data) { + return; + } + + drop_target = get_drop_target_uri_at_pos (dest, x, y); + g_assert (drop_target != NULL); + + g_signal_emit (dest, signals[HANDLE_NETSCAPE_URL], 0, + (char*) gtk_selection_data_get_data (dest->details->drag_data), + drop_target, + gdk_drag_context_get_selected_action (context), + x, y); + + g_free (drop_target); +} + +static gboolean +receive_xds (NautilusTreeViewDragDest *dest, + GtkWidget *widget, + guint32 time, + GdkDragContext *context, + int x, int y) +{ + GFile *location; + const guchar *selection_data; + gint selection_format; + gint selection_length; + + selection_data = gtk_selection_data_get_data (dest->details->drag_data); + selection_format = gtk_selection_data_get_format (dest->details->drag_data); + selection_length = gtk_selection_data_get_length (dest->details->drag_data); + + if (selection_format == 8 + && selection_length == 1 + && selection_data[0] == 'F') { + gtk_drag_get_data (widget, context, + gdk_atom_intern (NAUTILUS_ICON_DND_RAW_TYPE, + FALSE), + time); + return FALSE; + } else if (selection_format == 8 + && selection_length == 1 + && selection_data[0] == 'S') { + g_assert (dest->details->direct_save_uri != NULL); + location = g_file_new_for_uri (dest->details->direct_save_uri); + + nautilus_file_changes_queue_file_added (location); + nautilus_file_changes_consume_changes (TRUE); + + g_object_unref (location); + } + return TRUE; +} + + +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; + const gchar *tmp; + int length; + gboolean success, finished; + + 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; + finished = TRUE; + switch (info) { + case NAUTILUS_ICON_DND_GNOME_ICON_LIST : + receive_dropped_icons (dest, context, x, y); + success = TRUE; + break; + case NAUTILUS_ICON_DND_NETSCAPE_URL : + receive_dropped_netscape_url (dest, context, x, y); + success = TRUE; + break; + case NAUTILUS_ICON_DND_URI_LIST : + receive_dropped_uri_list (dest, context, x, y); + success = TRUE; + break; + case NAUTILUS_ICON_DND_TEXT: + receive_dropped_text (dest, context, x, y); + success = TRUE; + break; + case NAUTILUS_ICON_DND_RAW: + length = gtk_selection_data_get_length (selection_data); + tmp = (const gchar *) gtk_selection_data_get_data (selection_data); + receive_dropped_raw (dest, tmp, length, context, x, y); + success = TRUE; + break; + case NAUTILUS_ICON_DND_XDNDDIRECTSAVE: + finished = receive_xds (dest, widget, time, context, x, y); + success = TRUE; + break; + } + + if (finished) { + 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 char * +get_direct_save_filename (GdkDragContext *context) +{ + guchar *prop_text; + gint prop_len; + + if (!gdk_property_get (gdk_drag_context_get_source_window (context), gdk_atom_intern (NAUTILUS_ICON_DND_XDNDDIRECTSAVE_TYPE, FALSE), + gdk_atom_intern ("text/plain", FALSE), 0, 1024, FALSE, NULL, NULL, + &prop_len, &prop_text)) { + return NULL; + } + + /* Zero-terminate the string */ + prop_text = g_realloc (prop_text, prop_len + 1); + prop_text[prop_len] = '\0'; + + /* Verify that the file name provided by the source is valid */ + if (*prop_text == '\0' || + strchr ((const gchar *) prop_text, G_DIR_SEPARATOR) != NULL) { + DEBUG ("Invalid filename provided by XDS drag site"); + g_free (prop_text); + return NULL; + } + + return (gchar *) prop_text; +} + +static gboolean +set_direct_save_uri (NautilusTreeViewDragDest *dest, + GdkDragContext *context, + int x, int y) +{ + GFile *base, *child; + char *drop_uri; + char *filename, *uri; + + g_assert (dest->details->direct_save_uri == NULL); + + uri = NULL; + + drop_uri = get_drop_target_uri_at_pos (dest, x, y); + if (drop_uri != NULL) { + filename = get_direct_save_filename (context); + if (filename != NULL) { + /* Resolve relative path */ + base = g_file_new_for_uri (drop_uri); + child = g_file_get_child (base, filename); + uri = g_file_get_uri (child); + + g_object_unref (base); + g_object_unref (child); + + /* Change the property */ + gdk_property_change (gdk_drag_context_get_source_window (context), + gdk_atom_intern (NAUTILUS_ICON_DND_XDNDDIRECTSAVE_TYPE, FALSE), + gdk_atom_intern ("text/plain", FALSE), 8, + GDK_PROP_MODE_REPLACE, (const guchar *) uri, + strlen (uri)); + + dest->details->direct_save_uri = uri; + } else { + DEBUG ("Invalid filename provided by XDS drag site"); + } + } else { + DEBUG ("Could not retrieve XDS drop destination"); + } + + return uri != NULL; +} + +static gboolean +drag_drop_callback (GtkWidget *widget, + GdkDragContext *context, + int x, + int y, + guint32 time, + gpointer data) +{ + NautilusTreeViewDragDest *dest; + guint info; + GdkAtom target; + + dest = NAUTILUS_TREE_VIEW_DRAG_DEST (data); + + target = gtk_drag_dest_find_target (GTK_WIDGET (dest->details->tree_view), + context, + NULL); + if (target == GDK_NONE) { + return FALSE; + } + + info = dest->details->drag_type; + + if (info == NAUTILUS_ICON_DND_XDNDDIRECTSAVE) { + /* We need to set this or get_drop_path will fail, and it + was unset by drag_leave_callback */ + dest->details->have_drag_data = TRUE; + if (!set_direct_save_uri (dest, context, x, y)) { + return FALSE; + } + dest->details->have_drag_data = FALSE; + } + + dest->details->drop_occurred = TRUE; + + get_drag_data (dest, context, time); + remove_scroll_timeout (dest); + clear_drag_dest_row (dest); + + return TRUE; +} + +static void +tree_view_weak_notify (gpointer user_data, + GObject *object) +{ + NautilusTreeViewDragDest *dest; + + dest = NAUTILUS_TREE_VIEW_DRAG_DEST (user_data); + + remove_scroll_timeout (dest); + + dest->details->tree_view = NULL; +} + +static void +nautilus_tree_view_drag_dest_dispose (GObject *object) +{ + NautilusTreeViewDragDest *dest; + + dest = NAUTILUS_TREE_VIEW_DRAG_DEST (object); + + if (dest->details->tree_view) { + g_object_weak_unref (G_OBJECT (dest->details->tree_view), + tree_view_weak_notify, + dest); + } + + remove_scroll_timeout (dest); + + G_OBJECT_CLASS (nautilus_tree_view_drag_dest_parent_class)->dispose (object); +} + +static void +nautilus_tree_view_drag_dest_finalize (GObject *object) +{ + NautilusTreeViewDragDest *dest; + + dest = NAUTILUS_TREE_VIEW_DRAG_DEST (object); + free_drag_data (dest); + + G_OBJECT_CLASS (nautilus_tree_view_drag_dest_parent_class)->finalize (object); +} + +static void +nautilus_tree_view_drag_dest_init (NautilusTreeViewDragDest *dest) +{ + dest->details = G_TYPE_INSTANCE_GET_PRIVATE (dest, NAUTILUS_TYPE_TREE_VIEW_DRAG_DEST, + NautilusTreeViewDragDestDetails); +} + +static void +nautilus_tree_view_drag_dest_class_init (NautilusTreeViewDragDestClass *class) +{ + GObjectClass *gobject_class; + + gobject_class = G_OBJECT_CLASS (class); + + gobject_class->dispose = nautilus_tree_view_drag_dest_dispose; + gobject_class->finalize = nautilus_tree_view_drag_dest_finalize; + + g_type_class_add_private (class, sizeof (NautilusTreeViewDragDestDetails)); + + 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, + g_cclosure_marshal_generic, + 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, + g_cclosure_marshal_generic, + 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, + + g_cclosure_marshal_generic, + G_TYPE_NONE, 5, + G_TYPE_POINTER, + G_TYPE_STRING, + GDK_TYPE_DRAG_ACTION, + G_TYPE_INT, + G_TYPE_INT); + signals[HANDLE_NETSCAPE_URL] = + g_signal_new ("handle-netscape-url", + G_TYPE_FROM_CLASS (class), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (NautilusTreeViewDragDestClass, + handle_netscape_url), + NULL, NULL, + g_cclosure_marshal_generic, + G_TYPE_NONE, 5, + G_TYPE_STRING, + G_TYPE_STRING, + GDK_TYPE_DRAG_ACTION, + G_TYPE_INT, + G_TYPE_INT); + signals[HANDLE_URI_LIST] = + g_signal_new ("handle-uri-list", + G_TYPE_FROM_CLASS (class), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (NautilusTreeViewDragDestClass, + handle_uri_list), + NULL, NULL, + g_cclosure_marshal_generic, + G_TYPE_NONE, 5, + G_TYPE_STRING, + G_TYPE_STRING, + GDK_TYPE_DRAG_ACTION, + G_TYPE_INT, + G_TYPE_INT); + signals[HANDLE_TEXT] = + g_signal_new ("handle-text", + G_TYPE_FROM_CLASS (class), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (NautilusTreeViewDragDestClass, + handle_text), + NULL, NULL, + g_cclosure_marshal_generic, + G_TYPE_NONE, 5, + G_TYPE_STRING, + G_TYPE_STRING, + GDK_TYPE_DRAG_ACTION, + G_TYPE_INT, + G_TYPE_INT); + signals[HANDLE_RAW] = + g_signal_new ("handle-raw", + G_TYPE_FROM_CLASS (class), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (NautilusTreeViewDragDestClass, + handle_raw), + NULL, NULL, + g_cclosure_marshal_generic, + G_TYPE_NONE, 7, + G_TYPE_POINTER, + G_TYPE_INT, + G_TYPE_STRING, + G_TYPE_STRING, + GDK_TYPE_DRAG_ACTION, + G_TYPE_INT, + G_TYPE_INT); + signals[HANDLE_HOVER] = + g_signal_new ("handle-hover", + G_TYPE_FROM_CLASS (class), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (NautilusTreeViewDragDestClass, + handle_hover), + NULL, NULL, + g_cclosure_marshal_generic, + G_TYPE_NONE, 1, + G_TYPE_STRING); +} + + + +NautilusTreeViewDragDest * +nautilus_tree_view_drag_dest_new (GtkTreeView *tree_view) +{ + NautilusTreeViewDragDest *dest; + GtkTargetList *targets; + + dest = g_object_new (NAUTILUS_TYPE_TREE_VIEW_DRAG_DEST, NULL); + + dest->details->tree_view = tree_view; + g_object_weak_ref (G_OBJECT (dest->details->tree_view), + tree_view_weak_notify, dest); + + 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); + + targets = gtk_drag_dest_get_target_list (GTK_WIDGET (tree_view)); + gtk_target_list_add_text_targets (targets, NAUTILUS_ICON_DND_TEXT); + + 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; +} |