/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsISupports.idl"

interface nsIDOMWindow;
interface nsIURI;
interface nsIFrameLoaderOwner;

[scriptable, uuid(e774db14-79ac-4156-a7a3-aa3fd0a22c10)]

interface nsIOpenURIInFrameParams : nsISupports
{
  attribute DOMString referrer;
  attribute boolean isPrivate;
};

[scriptable, uuid(31da1ce2-aec4-4c26-ac66-d622935c3bf4)]

/**
 * The C++ source has access to the browser script source through
 * nsIBrowserDOMWindow. It is intended to be attached to the chrome DOMWindow
 * of a toplevel browser window (a XUL window). A DOMWindow that does not
 * happen to be a browser chrome window will simply have no access to any such
 * interface.
 */
interface nsIBrowserDOMWindow : nsISupports
{
  /**
   * Values for openURI's aWhere parameter.
   */
  /**
   * Do whatever the default is based on application state, user preferences,
   * and the value of the aContext parameter to openURI.
   */
  const short OPEN_DEFAULTWINDOW = 0;
  /**
   * Open in the "current window".  If aOpener is provided, this should be the
   * top window in aOpener's window hierarchy, but exact behavior is
   * application-dependent.  If aOpener is not provided, it's up to the
   * application to decide what constitutes a "current window".
   */
  const short OPEN_CURRENTWINDOW = 1;
  /**
   * Open in a new window.
   */
  const short OPEN_NEWWINDOW     = 2;
  /**
   * Open in a new content tab in the toplevel browser window corresponding to
   * this nsIBrowserDOMWindow.
   */
  const short OPEN_NEWTAB        = 3;
  /**
   * Open in an existing content tab based on the URI. If a match can't be
   * found, revert to OPEN_NEWTAB behavior.
   */
  const short OPEN_SWITCHTAB     = 4;

  /**
   * Values for openURI's aContext parameter.  These affect the behavior of
   * OPEN_DEFAULTWINDOW.
   */
  /**
   * external link (load request from another application, xremote, etc).
   */
  const short OPEN_EXTERNAL      = 1;
  /**
   * internal open new window
   */
  const short OPEN_NEW           = 2; 

  /**
   * Load a URI

   * @param aURI the URI to open. null is allowed.  If null is passed in, no
   *             load will be done, though the window the load would have
   *             happened in will be returned.
   * @param aWhere see possible values described above.
   * @param aOpener window requesting the open (can be null).
   * @param aContext the context in which the URI is being opened. This
   *                 is used only when aWhere == OPEN_DEFAULTWINDOW.
   * @return the window into which the URI was opened.
  */
  nsIDOMWindow openURI(in nsIURI aURI, in nsIDOMWindow aOpener,
                       in short aWhere, in short aContext);

  /**
   * As above, but return the nsIFrameLoaderOwner for the new window.
   // XXXbz is this the right API?
   // See bug 537428
   */
  nsIFrameLoaderOwner openURIInFrame(in nsIURI aURI, in nsIOpenURIInFrameParams params,
                                     in short aWhere, in short aContext);

  /**
   * @param  aWindow the window to test.
   * @return whether the window is the main content window for any
   *         currently open tab in this toplevel browser window.
   */
  boolean isTabContentWindow(in nsIDOMWindow aWindow);

  /**
   * This function is responsible for calling
   * nsIContentViewer::PermitUnload on each frame in the window. It
   * returns true if closing the window is allowed. See canClose() in
   * BrowserUtils.jsm for a simple implementation of this method.
   */
  boolean canClose();
};

