Pass Parameter from Page to Controller Method

[Jamsie]

Hi everyone,

I am trying to style rows in a table of Tasks based upon the due date and time of the tasks.

<apex:page showHeader="false" controller="atTaskListController">
<style type="text/css">
    .normalPriority{font-weight:bold; background-color: #FFFFCC;}
    .highPriority{font-weight:bold; background-color: #FFFFCC;}
    .critical Priority{font-weight:bold; background-color: #FFFFCC;}
</style>

 <apex:outputPanel id="taskList">
        <apex:pageBlock title="Callback Task List" >
             <apex:pageBlockTable value="{!tasks}" var="t">
                 <apex:column headerValue="Task"> <apex:outputLink value="/{!t.id}" target="_parent"> {!t.Task_ID__c}</apex:outputLink></apex:column>
                 <apex:column headerValue="Subject"><apex:outputLink value="/{!t.id}"> {!t.Subject}</apex:outputLink></apex:column>
                 <apex:column value="{!t.ActivityDate}" styleClass="{!style}"/>
                 <apex:column value="{!t.Due_Time__c}" />
                 <apex:column value="{!t.Priority}"/>
                 <apex:column value="{!t.Status}"/>
                 <apex:column value="{!t.whatid}"/>
                 <apex:column value="{!t.OwnerId}"/>
             </apex:pageBlockTable>
         </apex:pageBlock>
     </apex:outputPanel>
</apex:page>

public with sharing class atTaskListController {
    private List<Task> tasks = new List<Task>();
    private Task thisTask {get;set;}
    Map<Id, String> styleMap = new Map<Id, String>();
    
    public atTaskListController () {
        Schema.Describesobjectresult r = Task.sObjectType.getDescribe();
        Map<String, Schema.RecordTypeInfo> rtMap = r.getRecordTypeInfosByName();
        Id tRt = rtMap.get('Callback Request').getRecordTypeId();
        tasks = [select id, whoid, whatid,OwnerId, Subject, Priority, Task_ID__c,Due_Time__c, Due_Date_Time__c, ActivityDate, Status from Task 
                 where OwnerId= :UserInfo.getUserId() AND RecordTypeId=:tRt AND (Status!='Cancelled' OR Status!='Completed')];
                 
        for(Task tk: tasks){
            if(System.now()>=tk.ActivityDate){
                styleMap.put(tk.id, 'overdue');
            }else if(System.now()>=tk.Due_Date_Time__c.addHours(-2)){
                styleMap.put(tk.id, 'criticalPriority');
            }else if(System.now()>=tk.Due_Date_Time__c.addHours(-4)){
                styleMap.put(tk.id, 'highPriority');
            }else{
                styleMap.put(tk.id, 'normalPriority');
            }
        }                    
    }
    public List<Task> getTasks(){
        return tasks;
    }
     public String getStyle() {
        return styleMap.get(thisTask.Id);
    }
}

My problem is that I cannot figure out how to get a the task 't' from the page into the controller.  I'd like to pass it to getStyle(Task t) but cannot work out how to do this.  I cannot rely upon user interaction to do this, it must just happen.

Any help much appreciated.

Cheers,

James.

[Dirk Gronert]

Use a wrapper for your tasks .... the best way to describe is point you to a similar post: http://boards.developerforce.com/t5/Apex-Code-Development/How-do-I-get-the-objects-that-have-been-se...

[billyclint]

If the logic for determining your normal, high, or critical status is relatively simple you could use a formula in your VF page.  For example:

<apex:column value="{!t.Due_Time__c}" styleClass="{!IF( t.Due_Time__c < TODAY(), "normalPriority", "highPriority" )}" />

Otherwise, as Dirk mentioned above, a wrapper class with a variable to hold the style name would work well.

~ Clint

[Jamsie]

Dirk, Billy,

thanks for your help.  As I'm pushed for time I went with the formula based solution but I'll remember the wrapper method for any more complex situations.

Cheers,

James.