/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (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.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.wicket.page;


/**
 * Page manager.
 * 
 * @author Matej Knopp
 */
public interface IPageManager
{
	/**
	 * 
	 * @return the page manager context
	 */
	IPageManagerContext getContext();

	/**
	 * Retrieve page instance with given id.
	 * 
	 * @param id
	 *      the id of the page to load
	 * @return page instance or <code>null</code>
	 * @throws CouldNotLockPageException if the page is already locked by another thread
	 * and the lock cannot be acquired for some timeout
	 */
	public IManageablePage getPage(int id) throws CouldNotLockPageException;

	/**
	 * Marks page as changed.
	 * <p><strong>Note:</strong>Only stateful pages are stored.</p>
	 * 
	 * @param page
	 *      the page that should be stored in the page stores at the end of the request.
	 * @throws CouldNotLockPageException if the page is already locked by another thread
	 * and the lock cannot be acquired for some timeout
	 */
	public void touchPage(IManageablePage page) throws CouldNotLockPageException;

	/**
	 * Returns whether this manager supports versioning. Managers that support versioning must store
	 * page snapshots.
	 * 
	 * @return whether this page manager supports versioning
	 */
	public boolean supportsVersioning();

	/**
	 * Commits the changes to external storage if the manager uses it.
	 * 
	 * Should also detach all pages that were touched during this request.
	 */
	public void commitRequest();

	/**
	 * Invoked when new session has been created.
	 */
	public void newSessionCreated();

	/**
	 * Clears all data for the current session.
	 */
	public void clear();

	/**
	 * Destroy the page manager.
	 */
	public void destroy();
}

@@ -1296,23 +1296,16 @@
 t%0A%09 */%0A%09
-public 
 IManagea
@@ -1354,32 +1354,32 @@
 kPageException;%0A
+
 %0A%09/**%0A%09 * Marks 
@@ -1708,31 +1708,24 @@
 meout%0A%09 */%0A%09
-public 
 void touchPa
@@ -1976,23 +1976,16 @@
 g%0A%09 */%0A%09
-public 
 boolean 
@@ -2159,31 +2159,24 @@
 uest.%0A%09 */%0A%09
-public 
 void commitR
@@ -2240,31 +2240,24 @@
 ated.%0A%09 */%0A%09
-public 
 void newSess
@@ -2323,31 +2323,24 @@
 sion.%0A%09 */%0A%09
-public 
 void clear()
@@ -2386,16 +2386,9 @@
  */%0A
+
 %09
-public 
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Remove 'public' modifier for methods in interface. They are public implicitly