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authorEttore Perazzoli <ettore@src.gnome.org>2002-04-17 23:22:25 +0800
committerEttore Perazzoli <ettore@src.gnome.org>2002-04-17 23:22:25 +0800
commitea772d632da26ac497b11463ae2a870ecabfbb67 (patch)
tree55d747fd24765c4d3699285491c47c384999ab5d /shell/e-folder-dnd-bridge.c
parent0fef30a29a86a294c7e0ee65c99d0a83242d528e (diff)
downloadgsoc2013-evolution-ea772d632da26ac497b11463ae2a870ecabfbb67.tar.gz
gsoc2013-evolution-ea772d632da26ac497b11463ae2a870ecabfbb67.tar.zst
gsoc2013-evolution-ea772d632da26ac497b11463ae2a870ecabfbb67.zip
Removed. (impl_tree_drag_motion): Rewritten to use
* e-storage-set-view.c (handle_evolution_path_drag_motion): Removed. (impl_tree_drag_motion): Rewritten to use `e_folder_dnd_bridge_motion()'. (impl_tree_drag_data_received): Rewritten to use `e_folder_dnd_bridge_data_received()'. (convert_gdk_drag_action_to_corba): Removed. (convert_corba_drag_action_to_gdk): Removed. (find_matching_target_for_drag_context): Removed. * e-folder-dnd-bridge.c: New. * e-folder-dnd-bridge.h: New. svn path=/trunk/; revision=16491
Diffstat (limited to 'shell/e-folder-dnd-bridge.c')
-rw-r--r--shell/e-folder-dnd-bridge.c435
1 files changed, 435 insertions, 0 deletions
diff --git a/shell/e-folder-dnd-bridge.c b/shell/e-folder-dnd-bridge.c
new file mode 100644
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+++ b/shell/e-folder-dnd-bridge.c
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+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
+/* e-folder-dnd-bridge.c - Utility functions for handling dnd to Evolution
+ * folders using the ShellComponentDnd interface.
+ *
+ * Copyright (C) 2002 Ximian, Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * 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, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Ettore Perazzoli <ettore@ximian.com>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "e-folder-dnd-bridge.h"
+
+#include "Evolution.h"
+#include "e-storage-set-view.h"
+
+#include <gal/widgets/e-gui-utils.h>
+
+#include <libgnome/gnome-i18n.h>
+#include <libgnome/gnome-util.h>
+
+
+/* Callbacks for folder operations. */
+
+static void
+folder_xfer_callback (EStorageSet *storage_set,
+ EStorageResult result,
+ void *data)
+{
+ GtkWindow *parent;
+
+ if (result == E_STORAGE_OK)
+ return;
+
+ parent = GTK_WINDOW (data);
+ e_notice (parent, GNOME_MESSAGE_BOX_ERROR, _("Cannot transfer folder:\n%s"),
+ e_storage_result_to_string (result));
+}
+
+
+static GNOME_Evolution_ShellComponentDnd_ActionSet
+convert_gdk_drag_action_set_to_corba (GdkDragAction action)
+{
+ GNOME_Evolution_ShellComponentDnd_Action retval;
+
+ retval = GNOME_Evolution_ShellComponentDnd_ACTION_DEFAULT;
+
+ if (action & GDK_ACTION_COPY)
+ retval |= GNOME_Evolution_ShellComponentDnd_ACTION_COPY;
+ if (action & GDK_ACTION_MOVE)
+ retval |= GNOME_Evolution_ShellComponentDnd_ACTION_MOVE;
+ if (action & GDK_ACTION_LINK)
+ retval |= GNOME_Evolution_ShellComponentDnd_ACTION_LINK;
+ if (action & GDK_ACTION_ASK)
+ retval |= GNOME_Evolution_ShellComponentDnd_ACTION_ASK;
+
+ return retval;
+}
+
+static GNOME_Evolution_ShellComponentDnd_ActionSet
+convert_gdk_drag_action_to_corba (GdkDragAction action)
+{
+ if (action == GDK_ACTION_COPY)
+ return GNOME_Evolution_ShellComponentDnd_ACTION_COPY;
+ else if (action == GDK_ACTION_MOVE)
+ return GNOME_Evolution_ShellComponentDnd_ACTION_MOVE;
+ else if (action == GDK_ACTION_LINK)
+ return GNOME_Evolution_ShellComponentDnd_ACTION_LINK;
+ else if (action == GDK_ACTION_ASK)
+ return GNOME_Evolution_ShellComponentDnd_ACTION_ASK;
+ else {
+ g_warning ("Unknown GdkDragAction %d", action);
+ return GNOME_Evolution_ShellComponentDnd_ACTION_DEFAULT;
+ }
+}
+
+static GdkDragAction
+convert_corba_drag_action_to_gdk (GNOME_Evolution_ShellComponentDnd_ActionSet action)
+{
+ if (action == GNOME_Evolution_ShellComponentDnd_ACTION_COPY)
+ return GDK_ACTION_COPY;
+ else if (action == GNOME_Evolution_ShellComponentDnd_ACTION_MOVE)
+ return GDK_ACTION_MOVE;
+ else if (action == GNOME_Evolution_ShellComponentDnd_ACTION_LINK)
+ return GDK_ACTION_LINK;
+ else if (action == GNOME_Evolution_ShellComponentDnd_ACTION_ASK)
+ return GDK_ACTION_ASK;
+ else {
+ g_warning ("unknown GNOME_Evolution_ShellComponentDnd_ActionSet %d", action);
+ return GDK_ACTION_DEFAULT;
+ }
+}
+
+static EvolutionShellComponentClient *
+get_component_at_path (EStorageSet *storage_set,
+ const char *path)
+{
+ EvolutionShellComponentClient *component_client;
+ EFolderTypeRegistry *folder_type_registry;
+ EFolder *folder;
+
+ folder = e_storage_set_get_folder (storage_set, path);
+ if (folder == NULL)
+ return NULL;
+
+ folder_type_registry = e_storage_set_get_folder_type_registry (storage_set);
+ g_assert (folder_type_registry != NULL);
+
+ component_client = e_folder_type_registry_get_handler_for_type (folder_type_registry,
+ e_folder_get_type_string (folder));
+
+ return component_client;
+}
+
+/* This will look for the targets in @drag_context, choose one that matches
+ with the allowed types at @path, and return its name. The EVOLUTION_PATH
+ type always matches. */
+static const char *
+find_matching_target_for_drag_context (EStorageSet *storage_set,
+ const char *path,
+ GdkDragContext *drag_context)
+{
+ EFolderTypeRegistry *folder_type_registry;
+ EFolder *folder;
+ GList *accepted_types;
+ GList *p, *q;
+
+ folder_type_registry = e_storage_set_get_folder_type_registry (storage_set);
+
+ folder = e_storage_set_get_folder (storage_set, path);
+ if (folder == NULL)
+ return E_FOLDER_DND_PATH_TARGET_TYPE;
+
+ accepted_types = e_folder_type_registry_get_accepted_dnd_types_for_type (folder_type_registry,
+ e_folder_get_type_string (folder));
+
+ /* FIXME? We might make this more efficient. Currently it takes `n *
+ m' string compares, where `n' is the number of targets in the
+ @drag_context, and `m' is the number of supported types in
+ @folder. */
+
+ for (p = drag_context->targets; p != NULL; p = p->next) {
+ char *possible_type;
+
+ possible_type = gdk_atom_name ((GdkAtom) p->data);
+ if (strcmp (possible_type, E_FOLDER_DND_PATH_TARGET_TYPE) == 0) {
+ g_free (possible_type);
+ return E_FOLDER_DND_PATH_TARGET_TYPE;
+ }
+
+ for (q = accepted_types; q != NULL; q = q->next) {
+ const char *accepted_type;
+
+ accepted_type = (const char *) q->data;
+ if (strcmp (possible_type, accepted_type) == 0) {
+ g_free (possible_type);
+ return accepted_type;
+ }
+ }
+
+ g_free (possible_type);
+ }
+
+ return NULL;
+}
+
+static gboolean
+handle_evolution_path_drag_motion (EStorageSet *storage_set,
+ const char *path,
+ GdkDragContext *context,
+ unsigned int time)
+{
+ GdkModifierType modifiers;
+ GdkDragAction action;
+
+ gdk_window_get_pointer (NULL, NULL, NULL, &modifiers);
+
+ if ((modifiers & GDK_CONTROL_MASK) != 0) {
+ action = GDK_ACTION_COPY;
+ } else {
+ GtkWidget *source_widget;
+
+ action = GDK_ACTION_MOVE;
+
+ source_widget = gtk_drag_get_source_widget (context);
+ if (source_widget != NULL
+ && E_IS_STORAGE_SET_VIEW (source_widget)) {
+ const char *source_path;
+
+ source_path = e_storage_set_view_get_current_folder (E_STORAGE_SET_VIEW (source_widget));
+ if (source_path != NULL) {
+ EFolder *folder;
+ int source_path_len;
+ char *destination_path;
+
+ folder = e_storage_set_get_folder (storage_set, source_path);
+ if (folder != NULL && e_folder_get_is_stock (folder))
+ return FALSE;
+
+ source_path_len = strlen (path);
+ if (strcmp (path, source_path) == 0)
+ return FALSE;
+
+ destination_path = g_strconcat (path, "/", g_basename (source_path), NULL);
+ if (strncmp (destination_path, source_path, source_path_len) == 0) {
+ g_free (destination_path);
+ return FALSE;
+ }
+
+ g_free (destination_path);
+ }
+ }
+ }
+
+ gdk_drag_status (context, action, time);
+ return TRUE;
+}
+
+
+gboolean
+e_folder_dnd_bridge_motion (GtkWidget *widget,
+ GdkDragContext *context,
+ unsigned int time,
+ EStorageSet *storage_set,
+ const char *path)
+{
+ EvolutionShellComponentClient *component_client;
+ GNOME_Evolution_ShellComponentDnd_DestinationFolder destination_folder_interface;
+ GNOME_Evolution_ShellComponentDnd_DestinationFolder_Context corba_context;
+ GNOME_Evolution_ShellComponentDnd_Action suggested_action;
+ CORBA_Environment ev;
+ CORBA_boolean can_handle;
+ EFolder *folder;
+ const char *dnd_type;
+
+ g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
+ g_return_val_if_fail (context != NULL, FALSE);
+ g_return_val_if_fail (E_IS_STORAGE_SET (storage_set), FALSE);
+ g_return_val_if_fail (path != NULL, FALSE);
+
+ dnd_type = find_matching_target_for_drag_context (storage_set, path, context);
+ if (dnd_type == NULL)
+ return FALSE;
+
+ if (strcmp (dnd_type, E_FOLDER_DND_PATH_TARGET_TYPE) == 0)
+ return handle_evolution_path_drag_motion (storage_set, path, context, time);
+
+ component_client = get_component_at_path (storage_set, path);
+ if (component_client == NULL)
+ return FALSE;
+
+ destination_folder_interface = evolution_shell_component_client_get_dnd_destination_interface (component_client);
+ if (destination_folder_interface == NULL)
+ return FALSE;
+
+ CORBA_exception_init (&ev);
+
+ corba_context.dndType = (char *) dnd_type; /* (Safe cast, as we don't actually free the corba_context.) */
+ corba_context.possibleActions = convert_gdk_drag_action_set_to_corba (context->actions);
+ corba_context.suggestedAction = convert_gdk_drag_action_to_corba (context->suggested_action);
+
+ folder = e_storage_set_get_folder (storage_set, path);
+
+ can_handle = GNOME_Evolution_ShellComponentDnd_DestinationFolder_handleMotion (destination_folder_interface,
+ e_folder_get_physical_uri (folder),
+ e_folder_get_type_string (folder),
+ &corba_context,
+ &suggested_action,
+ &ev);
+ if (ev._major != CORBA_NO_EXCEPTION || ! can_handle) {
+ CORBA_exception_free (&ev);
+ return FALSE;
+ }
+
+ CORBA_exception_free (&ev);
+
+ gdk_drag_status (context, convert_corba_drag_action_to_gdk (suggested_action), time);
+ return TRUE;
+}
+
+static gboolean
+handle_data_received_path (GdkDragContext *context,
+ GtkSelectionData *selection_data,
+ EStorageSet *storage_set,
+ const char *path,
+ GtkWindow *toplevel_window)
+{
+ const char *source_path;
+ char *destination_path;
+ gboolean handled;
+
+ source_path = (const char *) selection_data->data;
+
+ /* (Basic sanity checks.) */
+ if (source_path == NULL || source_path[0] != G_DIR_SEPARATOR || source_path[1] == '\0')
+ return FALSE;
+
+ destination_path = g_concat_dir_and_file (path, g_basename (source_path));
+
+ switch (context->action) {
+ case GDK_ACTION_MOVE:
+ e_storage_set_async_xfer_folder (storage_set,
+ source_path,
+ destination_path,
+ TRUE,
+ folder_xfer_callback,
+ toplevel_window);
+ handled = TRUE;
+ break;
+ case GDK_ACTION_COPY:
+ e_storage_set_async_xfer_folder (storage_set,
+ source_path,
+ destination_path,
+ FALSE,
+ folder_xfer_callback,
+ toplevel_window);
+ handled = TRUE;
+ break;
+ default:
+ handled = FALSE;
+ g_warning ("EStorageSetView: Unknown action %d", context->action);
+ }
+
+ g_free (destination_path);
+
+ return handled;
+}
+
+static gboolean
+handle_data_received_non_path (GdkDragContext *context,
+ GtkSelectionData *selection_data,
+ EStorageSet *storage_set,
+ const char *path,
+ const char *target_type)
+{
+ GNOME_Evolution_ShellComponentDnd_DestinationFolder destination_folder_interface;
+ GNOME_Evolution_ShellComponentDnd_DestinationFolder_Context corba_context;
+ GNOME_Evolution_ShellComponentDnd_Data corba_data;
+ EvolutionShellComponentClient *component_client;
+ EFolder *folder;
+ CORBA_Environment ev;
+
+ component_client = get_component_at_path (storage_set, path);
+ if (component_client == NULL)
+ return FALSE;
+
+ destination_folder_interface = evolution_shell_component_client_get_dnd_destination_interface (component_client);
+ if (destination_folder_interface == NULL)
+ return FALSE;
+
+ CORBA_exception_init (&ev);
+
+ folder = e_storage_set_get_folder (storage_set, path);
+
+ corba_context.dndType = (char *) target_type;
+ corba_context.possibleActions = convert_gdk_drag_action_set_to_corba (context->actions);
+ corba_context.suggestedAction = convert_gdk_drag_action_to_corba (context->suggested_action);
+
+ corba_data.format = selection_data->format;
+ corba_data.target = selection_data->target;
+
+ corba_data.bytes._release = FALSE;
+
+ if (selection_data->data == NULL) {
+ /* If data is NULL the length is -1 and this would mess things
+ up so we handle it separately. */
+ corba_data.bytes._length = 0;
+ corba_data.bytes._buffer = NULL;
+ } else {
+ corba_data.bytes._length = selection_data->length;
+ corba_data.bytes._buffer = selection_data->data;
+ }
+
+ /* pass off the data to the component's DestinationFolderInterface */
+ return GNOME_Evolution_ShellComponentDnd_DestinationFolder_handleDrop (destination_folder_interface,
+ e_folder_get_physical_uri (folder),
+ e_folder_get_type_string (folder),
+ &corba_context,
+ convert_gdk_drag_action_to_corba (context->action),
+ &corba_data,
+ &ev);
+}
+
+void
+e_folder_dnd_bridge_data_received (GtkWidget *widget,
+ GdkDragContext *context,
+ GtkSelectionData *selection_data,
+ unsigned int time,
+ EStorageSet *storage_set,
+ const char *path)
+{
+ char *target_type;
+ gboolean handled;
+
+ g_return_if_fail (GTK_IS_WIDGET (widget));
+ g_return_if_fail (context != NULL);
+ g_return_if_fail (E_IS_STORAGE_SET (storage_set));
+ g_return_if_fail (path != NULL);
+
+ if (selection_data->data == NULL && selection_data->length == -1)
+ return;
+
+ target_type = gdk_atom_name (selection_data->target);
+
+ if (strcmp (target_type, E_FOLDER_DND_PATH_TARGET_TYPE) != 0) {
+ handled = handle_data_received_non_path (context, selection_data, storage_set,
+ path, target_type);
+ } else {
+ GtkWindow *toplevel_window;
+
+ toplevel_window = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (widget)));
+ handled = handle_data_received_path (context, selection_data, storage_set, path,
+ toplevel_window);
+ }
+
+ g_free (target_type);
+ gtk_drag_finish (context, handled, FALSE, time);
+}
+