/**
* Copyright (C) 2009 eXo Platform SAS.
*
* This 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 software 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.webui.core;
import java.util.Iterator;
import java.util.List;
import org.exoplatform.commons.serialization.api.annotations.Serialized;
import org.exoplatform.web.application.RequireJS;
import org.exoplatform.webui.application.WebuiRequestContext;
import org.exoplatform.webui.config.annotation.ComponentConfig;
import org.exoplatform.webui.config.annotation.EventConfig;
import org.exoplatform.webui.event.Event;
import org.exoplatform.webui.event.EventListener;
@ComponentConfig(template = "system:/groovy/webui/core/UIVirtualList.gtmpl", events = { @EventConfig(listeners = UIVirtualList.LoadNextActionListener.class) })
@Serialized
public class UIVirtualList extends UIComponentDecorator {
private int height;
private boolean autoAdjustHeight;
public int getHeight() {
return height;
}
public void setHeight(int height) {
this.height = height;
}
public boolean isAutoAdjustHeight() {
return autoAdjustHeight;
}
public void setAutoAdjustHeight(boolean auto) {
this.autoAdjustHeight = auto;
}
public String event(String name, String beanId) throws Exception {
UIComponent parent = this.getParent();
return parent.event(name, beanId);
}
public void dataBind(Iterator<List<?>> source) throws Exception {
UIRepeater repeater = this.getRepeater();
repeater.setSource(source);
}
public UIRepeater getRepeater() {
try {
return (UIRepeater) this.uicomponent_;
} catch (Exception e) {
throw new NullPointerException("Repeater doesn't attached");
}
}
public static class LoadNextActionListener extends EventListener<UIVirtualList> {
public void execute(Event<UIVirtualList> event) throws Exception {
UIVirtualList virtualList = event.getSource();
UIRepeater repeater = virtualList.getRepeater();
WebuiRequestContext rContext = event.getRequestContext();
repeater.feedNext();
RequireJS require = rContext.getJavascriptManager().require("SHARED/uiVirtualList", "uiVirtualList");
if (repeater.hasNext()) {
require.addScripts("uiVirtualList.updateList('" + virtualList.getId() + "', true);");
} else {
require.addScripts("uiVirtualList.updateList('" + virtualList.getId() + "', false);");
}
rContext.addUIComponentToUpdateByAjax((UIComponent) repeater);
}
}
}