DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (a81015259a98)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** 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 mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1999
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Radha Kulkarni (radha@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"

interface nsIHistoryEntry;
interface nsISHistoryListener;
interface nsISimpleEnumerator;
/**
 * An interface to the primary properties of the Session History
 * component. In an embedded browser environment, the nsIWebBrowser
 * object creates an instance of session history for each open window.
 * A handle to the session history object can be obtained from
 * nsIWebNavigation. In a non-embedded situation, the  owner of the
 * session history component must create a instance of it and set
 * it in the nsIWebNavigation object.
 * This interface is accessible from javascript.
 */
 

%{C++
#define NS_SHISTORY_CID \
{0x7294fe9c, 0x14d8, 0x11d5, {0x98, 0x82, 0x00, 0xC0, 0x4f, 0xa0, 0x2f, 0x40}}

#define NS_SHISTORY_CONTRACTID "@mozilla.org/browser/shistory;1"
%}

[scriptable, uuid(ef2c9bcb-96b8-4095-933a-cb1c506f2c58)]
interface nsISHistory: nsISupports
{
  /**
   * A readonly property of the interface that returns 
   * the number of toplevel documents currently available
   * in session history.
   */
   readonly attribute long count;

  /**
   * A readonly property of the interface that returns 
   * the index of the current document in session history.
   */
   readonly attribute long index;

  /**
   * A readonly property of the interface that returns 
   * the index of the last document that started to load and
   * didn't finished yet. When document finishes the loading
   * value -1 is returned.
   */
   readonly attribute long requestedIndex;

  /**
   * A read/write property of the interface, used to Get/Set
   * the maximum number of toplevel documents, session history 
   * can hold for each instance. 
   */
   attribute long maxLength;

  /**
   * Called to obtain handle to the history entry at a
   * given index.
   *
   * @param index             The index value whose entry is requested.
   * @param modifyIndex       A boolean flag that indicates if the current
   *                          index of session history should be modified 
   *                          to the parameter index.
   *
   * @return                  <code>NS_OK</code> history entry for 
   *                          the index is obtained successfully.
   *                          <code>NS_ERROR_FAILURE</code> Error in obtaining
   *                          history entry for the given index.
   */
   nsIHistoryEntry getEntryAtIndex(in long index, in boolean modifyIndex);


  /**
   * Called to purge older documents from history.
   * Documents can be removed from session history for various 
   * reasons. For example to  control memory usage of the browser, to 
   * prevent users from loading documents from history, to erase evidence of
   * prior page loads etc...
   *
   * @param numEntries        The number of toplevel documents to be
   *                          purged from history. During purge operation,
   *                          the latest documents are maintained and older 
   *                          'numEntries' documents are removed from history.
   * @throws                  <code>NS_SUCCESS_LOSS_OF_INSIGNIFICANT_DATA</code> Purge was vetod.
   * @throws                  <code>NS_ERROR_FAILURE</code> numEntries is
   *                          invalid or out of bounds with the size of history.
   *                          
   */
   void PurgeHistory(in long numEntries);

  /**
   * Called to register a listener for the session history component.
   * Listeners are notified when pages are loaded or purged from history.
   * 
   * @param aListener         Listener object to be notified for all
   *                          page loads that initiate in session history.
   *
   * @note                    A listener object must implement 
   *                          nsISHistoryListener and nsSupportsWeakReference
   *
   * @see nsISHistoryListener
   * @see nsSupportsWeakReference
   */
   void addSHistoryListener(in nsISHistoryListener aListener);

  /**
   * Called to remove a listener for the session history component.
   * Listeners are notified when pages are loaded from history.
   * 
   * @param aListener         Listener object to be removed from 
   *                          session history.
   *
   * @note                    A listener object must implement 
   *                          nsISHistoryListener and nsSupportsWeakReference
   * @see nsISHistoryListener
   * @see nsSupportsWeakReference
   */ 
   void removeSHistoryListener(in nsISHistoryListener aListener);

  /**
   * Called to obtain a enumerator for all the  documents stored in 
   * session history. The enumerator object thus returned by this method
   * can be traversed using nsISimpleEnumerator. 
   *
   * @note  To access individual history entries of the enumerator, perform the
   *        following steps:
   *        1) Call nsISHistory->GetSHistoryEnumerator() to obtain handle 
   *           the nsISimpleEnumerator object.
   *        2) Use nsISimpleEnumerator->GetNext() on the object returned
   *           by step #1 to obtain handle to the next object in the list. 
   *           The object returned by this step is of type nsISupports.
   *        3) Perform a QueryInterface on the object returned by step #2 
   *           to nsIHistoryEntry.
   *        4) Use nsIHistoryEntry to access properties of each history entry. 
   *
   * @see nsISimpleEnumerator
   * @see nsIHistoryEntry
   * @see QueryInterface()
   * @see do_QueryInterface()
   */
   readonly attribute nsISimpleEnumerator SHistoryEnumerator;

   void reloadCurrentEntry();
};