From ea772d632da26ac497b11463ae2a870ecabfbb67 Mon Sep 17 00:00:00 2001 From: Ettore Perazzoli Date: Wed, 17 Apr 2002 15:22:25 +0000 Subject: 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 --- shell/e-folder-dnd-bridge.c | 435 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 435 insertions(+) create mode 100644 shell/e-folder-dnd-bridge.c (limited to 'shell/e-folder-dnd-bridge.c') diff --git a/shell/e-folder-dnd-bridge.c b/shell/e-folder-dnd-bridge.c new file mode 100644 index 0000000000..3c15ba966c --- /dev/null +++ b/shell/e-folder-dnd-bridge.c @@ -0,0 +1,435 @@ +/* -*- 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 + */ + +#ifdef HAVE_CONFIG_H +#include +#endif + +#include "e-folder-dnd-bridge.h" + +#include "Evolution.h" +#include "e-storage-set-view.h" + +#include + +#include +#include + + +/* 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); +} + -- cgit v1.2.3