taskcontrolledjsftaskrenderer.java

esri的ArcGIS Server超级学习模板程序（for java）

package com.esri.solutions.jitk.web.faces.renderkit.xml;

import java.io.IOException;

import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;

import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;

import com.esri.adf.web.data.tasks.TaskDescriptor;
import com.esri.adf.web.data.tasks.TaskInfo;
import com.esri.adf.web.faces.component.TaskControl;
import com.esri.adf.web.faces.renderkit.xml.TaskRenderer;
import com.esri.solutions.jitk.web.tasks.RenderAwareTaskDescription;

public class TaskControlledJSFTaskRenderer extends TaskRenderer {

	private static final Logger LOG = LogManager.getLogger(TaskControlledJSFTaskRenderer.class);
	
	public TaskControlledJSFTaskRenderer () {
		LOG.info("Creating a new TaskControlledJSFTaskRenderer");
	}
	
	@Override
	public void encodeEnd(FacesContext fc, UIComponent control)
			throws IOException {
		
		
		LOG.debug("Rendering Task [ID: " + control.getClientId(fc) + "]");
		
		super.encodeEnd(fc, control);
		
		TaskControl taskCtrl = (TaskControl) control;
		TaskInfo taskInfo = taskCtrl.getTaskInfo();
		TaskDescriptor taskDesc = taskInfo.getTaskDescriptor();
		
		if (taskDesc instanceof RenderAwareTaskDescription) {
			RenderAwareTaskDescription ratd = (RenderAwareTaskDescription) taskDesc;
			ratd.setShouldRender(false);
			LOG.debug("Task was rendered controlled, setting ShouldRender to false");
		}
	}

}