Sitecore Workflow and Pipelines - sitecore

Question

I'm trying to implement a basic Javascript confirmation box on a workflow command (e.g. "are you sure you want to edit this?"). Depending on whether a users clicks yes or no, I want to move to a different state in the workflow. Here is the code I currently have (some logic is taken out):
[Serializable]
public class ConfirmAction
{
public void Process(WorkflowPipelineArgs args)
{
Item currentItem = args.DataItem;
ClientPipelineArgs clientArgs = new ClientPipelineArgs();
Sitecore.Context.ClientPage.Start(this, "DialogProcessor", clientArgs);
}
protected void DialogProcessor(ClientPipelineArgs args)
{
if (args.IsPostBack)
{
if (args.Result != "yes")
{
args.AbortPipeline();
return;
}
}
else
{
Sitecore.Context.ClientPage.ClientResponse.Confirm("Are you sure you want to edit this?");
args.WaitForPostBack();
}
}
}
I'm new to the Pipeline model, especially in relation to Sitecore, so I'm somewhat grasping at straws. The problem that I'm having, I believe, is that I don't have a way of getting the result back to the Workflow Pipeline, from the ClientResponse pipeline, to tell it what to do.
Thank you.
EDIT:
Using Yan's information, I eventually came up with the following solution:
public void Process(WorkflowPipelineArgs args)
{
Item currentItem = args.DataItem;
ClientPipelineArgs clientArgs = new ClientPipelineArgs();
clientArgs.Parameters.Add("itemID", currentItem.ID.ToString());
clientArgs.Parameters.Add("stateID", currentItem.Fields["__Workflow state"].Value);
Sitecore.Context.ClientPage.Start(this, "DialogProcessor", clientArgs);
}
protected void DialogProcessor(ClientPipelineArgs args)
{
if (args.IsPostBack)
{
if (args.Result != "yes")
{
Item currentItem = Sitecore.Configuration.Factory.GetDatabase("master").GetItem(args.Parameters["itemID"]);
currentItem.Editing.BeginEdit();
currentItem.Fields["__Workflow state"].Value = args.Parameters["stateID"];
currentItem.Editing.EndEdit();
return;
}
SheerResponse.Eval("window.location.reload();");
}
else
{
Sitecore.Context.ClientPage.ClientResponse.YesNoCancel("Are you sure you want to edit this?", "200", "200");
args.WaitForPostBack();
}
}

Answer 1

Well, I think this is where you can take advantage from ClientPipelineArgs. Let's say you add the current item ID to the parameters to pass:
public void Process(WorkflowPipelineArgs args)
{
Item currentItem = args.DataItem;
ClientPipelineArgs clientArgs = new ClientPipelineArgs();
clientArgs.Parameters.Add("id", currentItem.ID.ToString());
Sitecore.Context.ClientPage.Start(this, "DialogProcessor", clientArgs);
}
and later on when you get positive result you get it back and move to the target workflow state (explained in comments):
protected void DialogProcessor(ClientPipelineArgs args)
{
if (args.IsPostBack)
{
if (args.Result == "yes")
{
// 1. take item ID from args.Parameters["id"];
// 2. get item by this ID
// 3. move item to target workflow state
}
}
else
{
Sitecore.Context.ClientPage.ClientResponse.Confirm("Are you sure you want to edit this?");
args.WaitForPostBack();
}
}
This might require some minor changes (I didn't run it myself before posting), but hope you get the idea.