org.opencms.gwt.client.ui.CmsToolbarContextButton Maven / Gradle / Ivy
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/*
* This library is part of OpenCms -
* the Open Source Content Management System
*
* Copyright (c) Alkacon Software GmbH & Co. KG (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.gwt.client.ui;
import org.opencms.gwt.client.CmsCoreProvider;
import org.opencms.gwt.client.Messages;
import org.opencms.gwt.client.ui.contextmenu.CmsContextMenu;
import org.opencms.gwt.client.ui.contextmenu.CmsContextMenuCloseHandler;
import org.opencms.gwt.client.ui.contextmenu.I_CmsContextMenuEntry;
import org.opencms.gwt.client.ui.css.I_CmsLayoutBundle;
import org.opencms.gwt.client.ui.input.CmsLabel;
import org.opencms.gwt.client.util.CmsClientCollectionUtil;
import org.opencms.gwt.shared.CmsCoreData.AdeContext;
import java.util.List;
import com.google.gwt.event.logical.shared.CloseEvent;
import com.google.gwt.event.logical.shared.CloseHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.PopupPanel;
/**
* The context tool-bar menu button.
*
* @since 8.0.0
*/
public class CmsToolbarContextButton extends A_CmsToolbarMenu {
/** The menu data. */
protected List m_menuEntries;
/** The loading panel. */
private CmsLoadingAnimation m_loadingPanel;
/** The context menu. */
private CmsContextMenu m_menu;
/** The registration for the first close handler. */
private HandlerRegistration m_menuCloseHandler;
/** Context used for loading the context menu entries. */
private AdeContext m_menuContext = AdeContext.containerpage;
/** The main content widget. */
private FlexTable m_menuPanel;
/** The label which is displayed when no entries are found. */
private CmsLabel m_noEntriesLabel;
/** The registration for the second close handler. */
private HandlerRegistration m_popupCloseHandler;
/**
* Constructor.
*
* @param handler the container-page handler
*/
public CmsToolbarContextButton(final I_CmsToolbarHandler handler) {
super(I_CmsButton.ButtonData.CONTEXT, handler);
m_noEntriesLabel = new CmsLabel(Messages.get().key(Messages.GUI_TOOLBAR_CONTEXT_EMPTY_0));
m_noEntriesLabel.addStyleName(I_CmsLayoutBundle.INSTANCE.contextmenuCss().menuInfoLabel());
m_noEntriesLabel.addStyleName(I_CmsLayoutBundle.INSTANCE.generalCss().buttonCornerAll());
m_loadingPanel = new CmsLoadingAnimation();
// create the menu panel (it's a table because of ie6)
m_menuPanel = new FlexTable();
// set a style name for the menu table
m_menuPanel.getElement().addClassName(I_CmsLayoutBundle.INSTANCE.contextmenuCss().menuPanel());
// set the widget
setMenuWidget(m_menuPanel);
// clear the width of the popup content
getPopup().setWidth(0);
getPopup().addStyleName(I_CmsLayoutBundle.INSTANCE.dialogCss().contextMenu());
}
/**
* @see org.opencms.gwt.client.ui.I_CmsToolbarButton#onToolbarActivate()
*/
public void onToolbarActivate() {
getHandler().loadContextMenu(CmsCoreProvider.get().getStructureId(), m_menuContext);
}
/**
* Unregister the resize handler.
*
* @see org.opencms.gwt.client.ui.I_CmsToolbarButton#onToolbarDeactivate()
*/
public void onToolbarDeactivate() {
if (m_resizeRegistration != null) {
m_resizeRegistration.removeHandler();
m_resizeRegistration = null;
}
}
/**
* @see org.opencms.gwt.client.ui.CmsMenuButton#openMenu()
*/
@Override
public void openMenu() {
if (m_menu == null) {
m_menuPanel.setWidget(0, 0, m_loadingPanel);
}
super.openMenu();
}
/**
* Sets the menu context.
*
* @param menuContext the new menu context
*/
public void setMenuContext(AdeContext menuContext) {
m_menuContext = menuContext;
}
/**
* Creates the menu and adds it to the panel.
*
* @param menuEntries the menu entries
*/
public void showMenu(List menuEntries) {
if (!CmsClientCollectionUtil.isEmptyOrNull(menuEntries)) {
// if there were entries found for the menu, create the menu
m_menu = new CmsContextMenu(menuEntries, true, getPopup());
// add the resize handler for the menu
m_resizeRegistration = Window.addResizeHandler(m_menu);
// set the menu as widget for the panel
m_menuPanel.setWidget(0, 0, m_menu);
if (m_menuCloseHandler != null) {
m_menuCloseHandler.removeHandler();
}
if (m_popupCloseHandler != null) {
m_popupCloseHandler.removeHandler();
}
// add the close handler for the menu
m_menuCloseHandler = getPopup().addCloseHandler(new CmsContextMenuCloseHandler(m_menu));
m_popupCloseHandler = getPopup().addCloseHandler(new CloseHandler() {
public void onClose(CloseEvent event) {
setActive(false);
}
});
m_popup.position();
} else {
m_menuPanel.setWidget(0, 0, m_noEntriesLabel);
m_popup.position();
}
}
}