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OpenCms is an enterprise-ready, easy to use website content management system based on Java and XML technology. Offering a complete set of features, OpenCms helps content managers worldwide to create and maintain beautiful websites fast and efficiently.

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/*
 * This library is part of OpenCms -
 * the Open Source Content Management System
 *
 * Copyright (c) Alkacon Software GmbH (http://www.alkacon.com)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * For further information about Alkacon Software, please see the
 * company website: http://www.alkacon.com
 *
 * For further information about OpenCms, please see the
 * project website: http://www.opencms.org
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package org.opencms.ade.containerpage.client.impl;

import org.opencms.ade.containerpage.client.I_CmsContainerZIndexManager;

import java.util.HashMap;
import java.util.Map;

import com.google.gwt.dom.client.Element;

/**
 * Implementation of the Z index manager for IE.

* * @since 8.0.0 */ public class CmsContainerZIndexManager implements I_CmsContainerZIndexManager { /** The element ancestor chains by container id. */ private Map m_chains = new HashMap(); /** The constant which should be added to the bumped z index. */ public static final int BUMP_OFFSET = org.opencms.gwt.client.ui.css.I_CmsLayoutBundle.INSTANCE.constants().css().zIndexHighlighting() + 1; /** The maximum z index found in the container ancestors. */ private int m_maxZIndex; /** The container whose ancestor chain's z-index is currently bumped, or null if there is no bumped ancestor chain. */ private String m_bumped; /** The container from which the last drag operation started. */ private String m_startContainer; /** * @see org.opencms.ade.containerpage.client.I_CmsContainerZIndexManager#addContainer(java.lang.String, com.google.gwt.dom.client.Element) */ public void addContainer(String name, Element element) { CmsZIndexChain chain = CmsZIndexChain.get(element); m_chains.put(name, chain); m_maxZIndex = Math.max(m_maxZIndex, chain.getMaxZIndex()); } /** * Bumps the z indices for the ancestor elements of a given container.

* * @param containerName the name of the container */ public void bump(String containerName) { reset(); if (containerName != null) { m_chains.get(containerName).bump(BUMP_OFFSET + m_maxZIndex); m_bumped = containerName; } } /** * @see org.opencms.ade.containerpage.client.I_CmsContainerZIndexManager#enter(java.lang.String) */ public void enter(String containerName) { bump(containerName); } /** * @see org.opencms.ade.containerpage.client.I_CmsContainerZIndexManager#leave(java.lang.String) */ public void leave(String containerName) { bump(m_startContainer); } /** * Resets the elements with bumped z indices.

*/ public void reset() { if (m_bumped == null) { return; } m_chains.get(m_bumped).reset(); } /** * @see org.opencms.ade.containerpage.client.I_CmsContainerZIndexManager#start(java.lang.String) */ public void start(String containerName) { m_startContainer = containerName; bump(m_startContainer); } /** * @see org.opencms.ade.containerpage.client.I_CmsContainerZIndexManager#stop() */ public void stop() { reset(); } }





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