/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * The contents of this file are subject to the Netscape Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Original Author: David W. Hyatt (hyatt@netscape.com)
 *
 * Contributor(s): 
 *                  Håkan Waara (hwaara@chello.se)
 */

interface nsIOutlinerBoxObject;

#include "nsISupports.idl"

[scriptable, uuid(F848D7CF-F3D6-4775-8C9F-135546E61E1E)]
interface nsIOutlinerSelection : nsISupports
{
  /**
   * The outliner widget for this selection.
   */
  attribute nsIOutlinerBoxObject outliner;

  /**
   * The number of rows currently selected in this outliner.
   */
  readonly attribute long count;

  /**
   * Indicates whether or not the row at the specified index is
   * part of the selection.
   */
  boolean isSelected(in long index);

  /**
   * Deselect all rows and select the row at the specified index. 
   */
  void select(in long index);

  /**
   * Perform a timed select.
   */
  void timedSelect(in long index, in long delay);

  /**
   * Toggle the selection state of the row at the specified index.
   */
  void toggleSelect(in long index);

  /**
   * Select the range specified by the indices.  If augment is true,
   * then we add the range to the selection without clearing out anything
   * else.  If augment is false, everything is cleared except for the specified range.
   */
  void rangedSelect(in long startIndex, in long endIndex, in boolean augment);

  /**
   * Clears the range.
   */
  void clearRange(in long startIndex, in long endIndex);

  /**
   * Clears the selection.
   */
  void clearSelection();

  /**
   * Inverts the selection.
   */
  void invertSelection();

  /**
   * Selects all rows.
   */
  void selectAll();

  /**
   * Iterate the selection using these methods.
   */
  long getRangeCount();
  void getRangeAt(in long i, out long min, out long max);

  /**
   * Can be used to invalidate the selection.
   */
  void invalidateSelection();

  /**
   * Called when the row count changes to adjust selection indices.
   */
  void adjustSelection(in long index, in long count);

  /**
   * This attribute is a boolean indicating whether or not the
   * "select" event should fire when the selection is changed using
   * one of our methods.  A view can use this to temporarily suppress
   * the selection while manipulating all of the indices, e.g., on 
   * a sort.
   */
  attribute boolean selectEventsSuppressed;

  /**
   * The current item (the one that gets a focus rect in addition to being
   * selected).
   */
  attribute long currentIndex;
};

%{C++
// Initializer,
%}

