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-/* -*- Mode: IDL; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-/*
- * Interface for the Evolution components that want to support Drag and Drop
- * operations on their folders.
- *
- * Authors:
- * Ettore Perazzoli <ettore@ximian.com>
- *
- * Copyright (C) 2001 Ximian, Inc.
- */
-
-#include <Bonobo.h>
-
-module GNOME {
-module Evolution {
-module ShellComponentDnd {
- typedef short Action;
- const Action ACTION_DEFAULT = 0;
- const Action ACTION_COPY = 1 << 1;
- const Action ACTION_MOVE = 1 << 2;
- const Action ACTION_LINK = 1 << 3;
- const Action ACTION_ASK = 1 << 4;
- const Action ACTION_ANY = ACTION_COPY | ACTION_MOVE | ACTION_LINK | ACTION_ASK;
-
- typedef Action ActionSet; // For readability.
-
- struct Data {
- short format;
- short target;
- sequence <octet> bytes;
- };
-
- exception NoData {};
-
- interface SourceFolder : Bonobo::Unknown {
- struct Context {
- string physicalUri;
- string folderType;
- ActionSet possibleActions;
- Action suggestedAction;
- };
-
- /* The user started a drag from this object. If the component
- receives this while still in the middle of an existing drag
- operation, it should stop the existing drag operation and
- start a new one. */
- void beginDrag (in string physical_uri,
- in string folder_type,
- out ActionSet possible_actions,
- out Action suggested_action);
-
- /* User released the mouse button and dropped the object
- somewhere, so we now want to get the data for the current
- context. */
- void getData (in Context source_context,
- in Action action,
- in string dnd_type,
- out Data data)
- raises (NoData);
-
- /* The target has finished processing the data, so we can
- delete it. */
- void deleteData (in Context source_context);
-
- /* The drag is over. This should also clean up the data if
- there was a `getData()' but no `deleteData()' after it. */
- void endDrag (in Context source_context);
- };
-
- interface DestinationFolder : Bonobo::Unknown {
- struct Context {
- string dndType;
- ActionSet possibleActions;
- Action suggestedAction;
- };
-
- /* The user is moving a dragged object over our folder. This
- will return %FALSE if the specified object cannot be
- dropped; otherwise, it will return %TRUE and then set the
- @default_action and @non_default_action we want to be
- performed when the drop happens. */
- boolean handleMotion (in Context destination_context,
- out Action suggested_action);
-
- /* Data is dropped. We are given the data for the dropped
- object, and we are supposed to perform the operation
- requested. */
- boolean handleDrop (in Context destination_context,
- in Action action,
- in Data data);
- };
-};
-};
-};