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Adding A Task

  • Edit "tool/src/webapp/tasklist/TaskList.jsp"
  • From:
    <%@ taglib uri="http://sakaiproject.org/jsf/sakai" prefix="sakai" %>
    <%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
    <%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %> 
     <f:loadBundle basename="org.sakaiproject.tool.tasklist.bundle.Messages" var="msgs"/>
     
    <f:view>
    	<sakai:view_container title="Task List Tool">
    		<sakai:view_content>
    			<h:form id="tasks">
    			 	<sakai:view_title value="#{msgs.task_list_title}"/>
    			 	<h:outputText value="Hello, #{TaskListBean.currentUserDisplayName}"/>
    			 </h:form>
      		</sakai:view_content>	
    	</sakai:view_container>
    </f:view>
    
  • To:
    <%@ taglib uri="http://sakaiproject.org/jsf/sakai" prefix="sakai" %>
    <%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
    <%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %> 
     <f:loadBundle basename="org.sakaiproject.tool.tasklist.bundle.Messages" var="msgs"/>
     
    <f:view>
    	<sakai:view_container title="Task List Tool">
    		<sakai:view_content>
    			<h:form id="tasks">
    			 	<sakai:view_title value="#{msgs.task_list_title}"/>
    			 	<h:outputText value="Hello, #{TaskListBean.currentUserDisplayName}"/>
    			 	<sakai:panel_edit>
    			 		<h:inputText value="#{TaskListBean.taskText}" size="60"/>
    	 				<h:commandButton value="#{msgs.task_list_add}" action="#{TaskListBean.processActionAdd}" />
    			 	</sakai:panel_edit>
    			 </h:form>
      		</sakai:view_content>	
    	</sakai:view_container>
    </f:view>
    
  • Now we have to edit the TaskListBean.java file, adding the "taskText" member as well as the "processActionAdd" method.
  • TaskListBean.java changes:
    • From:
      package org.sakaiproject.tool.tasklist.jsf;
      
      import org.apache.commons.logging.Log;
      import org.apache.commons.logging.LogFactory;
      import org.sakaiproject.tool.tasklist.api.TaskListService;
      
      public class TaskListBean {
      
      	// use commons logger
      	private final Log log = LogFactory.getLog(this.getClass());
      
      	private TaskListService taskListService;
      	private String currentUserDisplayName;
      	
      	// Constructor
      	public TaskListBean() {
      		log.debug("Constructor");
      	}
      
      	// IoC
      	public void setTaskListService(TaskListService taskListService) {
      		log.debug("setTaskListService");
      		this.taskListService = taskListService;
      		currentUserDisplayName = taskListService.getCurrentUserDisplayName(); 
      	}
      
      	public String getCurrentUserDisplayName() {
      		return currentUserDisplayName;
      	}
      
      	public void setCurrentUserDisplayName(String currentUserDisplayName) {
      		this.currentUserDisplayName = currentUserDisplayName;
      	}
      }
      
      
      
    • To:
      package org.sakaiproject.tool.tasklist.jsf;
      
      import java.util.Date;
      
      import org.apache.commons.logging.Log;
      import org.apache.commons.logging.LogFactory;
      import org.sakaiproject.tool.tasklist.api.Task;
      import org.sakaiproject.tool.tasklist.api.TaskListService;
      import org.sakaiproject.tool.tasklist.impl.TaskImpl;
      
      public class TaskListBean {
      
      	// use commons logger
      	private final Log log = LogFactory.getLog(this.getClass());
      
      	private TaskListService taskListService;
      	private String currentUserDisplayName;
      	private String taskText;
      	
      	// Constructor
      	public TaskListBean() {
      		log.debug("Constructor");
      	}
      
      	// IoC
      	public void setTaskListService(TaskListService taskListService) {
      		log.debug("setTaskListService");
      		this.taskListService = taskListService;
      		currentUserDisplayName = taskListService.getCurrentUserDisplayName(); 
      	}
      
      	public String getCurrentUserDisplayName() {
      		return currentUserDisplayName;
      	}
      
      	public void setCurrentUserDisplayName(String currentUserDisplayName) {
      		this.currentUserDisplayName = currentUserDisplayName;
      	}
      
      	public String getTaskText() {
      		log.debug("getTaskText");
      		return taskText;
      	}
      
      	public void setTaskText(String taskText) {
      		log.debug("setTaskText");
      		this.taskText = taskText;
      	}
      	
      	public String processActionAdd() {
      
      		log.debug("processActionAdd");
      		
      		// Test for empty tasks and don't add them
      		if(null != taskText && !taskText.equals("")) {
      			Task task = new TaskImpl();
      			task.setOwner(taskListService.getCurrentUserId());
      			task.setTask(taskText);
      			task.setCreationDate(new Date());
      			task.setSiteId(taskListService.getSiteId());
      
      			taskListService.addTask(task);
      
      			// Reset task
      			taskText = "";
      		}
      		return "newTask";
      	}
      }
      
  • The "TaskListBean.processActionAdd()" method returns a string witch, is used by the JSF framework to navigate to the same or to a different JSF page
    • These navigation rules are setup in "tool/src/webapp/WEB-INF/faces-config.xml"
    • Navigation rules:
      •   	<!-- Navigation Rules -->
        	<navigation-rule>
        		<from-view-id>/tasklist/TaskList.jsp</from-view-id>
        		<navigation-case>
        			<from-outcome>newTask</from-outcome>
        			<to-view-id>/tasklist/TaskList.jsp</to-view-id>
        		</navigation-case>
        	</navigation-rule>
        
    • The "processActionAdd()" method returns the "newTask" string, which matches the navigation case "<from-outcome>newTask</from-outcome>" in the above code sample
  • Screen Capture
    • Unable to embed resource: TaskList-AddingTask of type application/octet-stream

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