/*
* 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.ui;
import org.opencms.gwt.client.dnd.CmsDNDHandler;
import org.opencms.gwt.client.ui.A_CmsHoverHandler;
import org.opencms.gwt.client.ui.css.I_CmsLayoutBundle;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.event.dom.client.HasMouseOutHandlers;
import com.google.gwt.event.dom.client.HasMouseOverHandlers;
import com.google.gwt.event.dom.client.MouseOutEvent;
import com.google.gwt.event.dom.client.MouseOutHandler;
import com.google.gwt.event.dom.client.MouseOverEvent;
import com.google.gwt.event.dom.client.MouseOverHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlowPanel;
/**
* A panel to be displayed inside a container element to provide optional functions like edit, move, remove... <p>
*
* @since 8.0.0
*/
public class CmsElementOptionBar extends Composite implements HasMouseOverHandlers, HasMouseOutHandlers {
/**
* Hover handler for option bar.<p>
*/
protected class HoverHandler extends A_CmsHoverHandler {
/**
* @see org.opencms.gwt.client.ui.A_CmsHoverHandler#onHoverIn(com.google.gwt.event.dom.client.MouseOverEvent)
*/
@Override
protected void onHoverIn(MouseOverEvent event) {
if (activeBar != null) {
try {
activeBar.removeHighlighting();
} catch (Throwable t) {
// ignore
}
activeBar = null;
}
addHighlighting();
}
/**
* @see org.opencms.gwt.client.ui.A_CmsHoverHandler#onHoverOut(com.google.gwt.event.dom.client.MouseOutEvent)
*/
@Override
protected void onHoverOut(MouseOutEvent event) {
timer = new Timer() {
@Override
public void run() {
if (timer == this) {
removeHighlighting();
}
}
};
timer.schedule(750);
}
}
/** The currently active option bar. */
/*default */static CmsElementOptionBar activeBar;
/** The timer used for hiding the option bar. */
/*default */static Timer timer;
/** The CSS class to be assigned to each option-bar. */
private static String CSS_CLASS = org.opencms.ade.containerpage.client.ui.css.I_CmsLayoutBundle.INSTANCE.containerpageCss().optionBar();
/** The calculated panel width. */
private int m_calculatedWidth;
/** The parent container element. */
private CmsContainerPageElementPanel m_containerElement;
/** The panel. */
private FlowPanel m_panel;
/**
* Constructor.<p>
*
* @param containerElement the parent container element
*/
public CmsElementOptionBar(CmsContainerPageElementPanel containerElement) {
m_panel = new FlowPanel();
m_containerElement = containerElement;
initWidget(m_panel);
HoverHandler handler = new HoverHandler();
addMouseOverHandler(handler);
addMouseOutHandler(handler);
setStyleName(CSS_CLASS);
}
/**
* Creates an option-bar for the given drag element.<p>
*
* @param element the element to create the option-bar for
* @param dndHandler the drag and drop handler
* @param buttons the list of buttons to display
*
* @return the created option-bar
*/
public static CmsElementOptionBar createOptionBarForElement(
CmsContainerPageElementPanel element,
CmsDNDHandler dndHandler,
A_CmsToolbarOptionButton... buttons) {
CmsElementOptionBar optionBar = new CmsElementOptionBar(element);
if (buttons != null) {
// add buttons, last as first
for (int i = buttons.length - 1; i >= 0; i--) {
CmsElementOptionButton option = buttons[i].createOptionForElement(element);
if (option == null) {
continue;
}
optionBar.add(option);
if (buttons[i] instanceof CmsToolbarMoveButton) {
option.addMouseDownHandler(dndHandler);
}
}
}
return optionBar;
}
/**
* Adds another option button.<p>
*
* @param w the button to add
*/
public void add(CmsElementOptionButton w) {
m_panel.add(w);
m_calculatedWidth = m_panel.getWidgetCount() * 20;
getElement().getStyle().setWidth(m_calculatedWidth, Unit.PX);
}
/**
* @see com.google.gwt.event.dom.client.HasMouseOutHandlers#addMouseOutHandler(com.google.gwt.event.dom.client.MouseOutHandler)
*/
public HandlerRegistration addMouseOutHandler(MouseOutHandler handler) {
return addDomHandler(handler, MouseOutEvent.getType());
}
/**
* @see com.google.gwt.event.dom.client.HasMouseOverHandlers#addMouseOverHandler(com.google.gwt.event.dom.client.MouseOverHandler)
*/
public HandlerRegistration addMouseOverHandler(MouseOverHandler handler) {
return addDomHandler(handler, MouseOverEvent.getType());
}
/**
* Clears the bar.<p>
*/
public void clear() {
m_panel.clear();
m_calculatedWidth = 0;
}
/**
* Returns the calculated width of the widget.<p>
*
* @return the calculated width
*/
public int getCalculatedWidth() {
return m_calculatedWidth;
}
/**
* Adds the highlighting and option bar.<p>
*/
protected void addHighlighting() {
timer = null;
getElement().addClassName(I_CmsLayoutBundle.INSTANCE.stateCss().cmsHovering());
getContainerElement().highlightElement();
activeBar = this;
}
/**
* Returns the parent container element.<p>
*
* @return the parent container element
*/
protected CmsContainerPageElementPanel getContainerElement() {
return m_containerElement;
}
/**
* Removes the highlighting and option bar.<p>
*/
protected void removeHighlighting() {
timer = null;
if (activeBar == this) {
activeBar = null;
}
getElement().removeClassName(I_CmsLayoutBundle.INSTANCE.stateCss().cmsHovering());
getContainerElement().removeHighlighting();
}
}