nsISHistory.idl
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- /* -*- 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.
- *
- * @status FROZEN
- */
-
- %{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(7294FE9B-14D8-11D5-9882-00C04FA02F40)]
- 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 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;
- };