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/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla 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/MPL/
 *
 * 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 the Mozilla browser.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications, Inc.
 * Portions created by the Initial Developer are Copyright (C) 1999
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Dan Rosen <dr@netscape.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "nsISupports.idl"

/**
 * An interface for embedding clients who wish to interact with
 * the system-wide OS clipboard. Mozilla does not use a private
 * clipboard, instead it places its data directly onto the system 
 * clipboard. The webshell implements this interface.
 */

[scriptable, uuid(b8100c90-73be-11d2-92a5-00105a1b0d64)]
interface nsIClipboardCommands : nsISupports {

  /**
   * Returns whether there is a selection and it is not read-only.
   *
   * @return <code>true</code> if the current selection can be cut,
   *          <code>false</code> otherwise.
   */
  boolean canCutSelection();

  /**
   * Returns whether there is a selection and it is copyable.
   *
   * @return <code>true</code> if there is a selection,
   *          <code>false</code> otherwise.
   */
  boolean canCopySelection();

  /**
   * Returns whether we can copy a link location.
   *
   * @return <code>true</code> if a link is selected,
   *           <code>false</code> otherwise.
   */
  boolean canCopyLinkLocation();

  /**
   * Returns whether we can copy an image location.
   *
   * @return <code>true</code> if an image is selected,
              <code>false</code> otherwise.
   */
  boolean canCopyImageLocation();

  /**
   * Returns whether we can copy an image's contents.
   *
   * @return <code>true</code> if an image is selected,
   *          <code>false</code> otherwise
   */
  boolean canCopyImageContents();

  /**
   * Returns whether the current contents of the clipboard can be
   * pasted and if the current selection is not read-only.
   *
   * @return <code>true</code> there is data to paste on the clipboard
   *          and the current selection is not read-only,
   *          <code>false</code> otherwise
   */
  boolean canPaste();

  /**
   * Cut the current selection onto the clipboard.
   */
  void cutSelection();

  /**
   * Copy the current selection onto the clipboard.
   */
  void copySelection();

  /**
   * Copy the link location of the current selection (e.g.,
   * the |href| attribute of a selected |a| tag).
   */
  void copyLinkLocation();

  /**
   * Copy the location of the selected image.
   */
  void copyImageLocation();

  /**
   * Copy the contents of the selected image.
   */
  void copyImageContents();

  /**
   * Paste the contents of the clipboard into the current selection.
   */
  void paste();

  /**
   * Select the entire contents.
   */
  void selectAll();

  /**
   * Clear the current selection (if any). Insertion point ends up
   * at beginning of current selection.
   */
  void selectNone();

};