/// <summary>
/// Renders the specified context.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="result">The result.</param>
public override void OnRender(ILavaRenderContext context, TextWriter result)
{
// first ensure that entity commands are allowed in the context
if (!this.IsAuthorized(context))
{
result.Write(string.Format(LavaBlockBase.NotAuthorizedMessage, this.SourceElementName));
return;
}
var attributes = new Dictionary <string, string>();
string parmWorkflowType = null;
string parmWorkflowName = null;
string parmWorkflowId = null;
string parmActivityType = null;
/* Parse the markup text to pull out configuration parameters. */
var parms = ParseMarkup(_markup, context);
foreach (var p in parms)
{
if (p.Key.ToLower() == "workflowtype")
{
parmWorkflowType = p.Value;
}
else if (p.Key.ToLower() == "workflowname")
{
parmWorkflowName = p.Value;
}
else if (p.Key.ToLower() == "workflowid")
{
parmWorkflowId = p.Value;
}
else if (p.Key.ToLower() == "activitytype")
{
parmActivityType = p.Value;
}
else
{
attributes.AddOrReplace(p.Key, p.Value);
}
}
/* Process inside a new stack level so our own created variables do not
* persist throughout the rest of the workflow. */
context.ExecuteInChildScope((System.Action <ILavaRenderContext>)((newContext) =>
{
var rockContext = LavaHelper.GetRockContextFromLavaContext(context);
WorkflowService workflowService = new WorkflowService(rockContext);
Rock.Model.Workflow workflow = null;
WorkflowActivity activity = null;
/* They provided a WorkflowType, so we need to kick off a new workflow. */
if (parmWorkflowType != null)
{
string type = parmWorkflowType;
string name = parmWorkflowName ?? string.Empty;
WorkflowTypeCache workflowType = null;
/* Get the type of workflow */
if (type.AsGuidOrNull() != null)
{
workflowType = WorkflowTypeCache.Get(type.AsGuid());
}
else if (type.AsIntegerOrNull() != null)
{
workflowType = WorkflowTypeCache.Get(type.AsInteger());
}
/* Try to activate the workflow */
if (workflowType != null)
{
workflow = Rock.Model.Workflow.Activate(( WorkflowTypeCache )workflowType, ( string )parmWorkflowName);
/* Set any workflow attributes that were specified. */
foreach (var attr in attributes)
{
if (workflow.Attributes.ContainsKey(attr.Key))
{
workflow.SetAttributeValue(attr.Key, attr.Value.ToString());
}
}
if (workflow != null)
{
List <string> errorMessages;
workflowService.Process(workflow, out errorMessages);
if (errorMessages.Any())
{
context["Error"] = string.Join("; ", errorMessages.ToArray());
}
context["Workflow"] = workflow;
}
else
{
context["Error"] = "Could not activate workflow.";
}
}
else
{
context["Error"] = "Workflow type not found.";
}
}
/* They instead provided a WorkflowId, so we are working with an existing Workflow. */
else if (parmWorkflowId != null)
{
string id = parmWorkflowId.ToString();
/* Get the workflow */
if (id.AsGuidOrNull() != null)
{
workflow = workflowService.Get(id.AsGuid());
}
else if (id.AsIntegerOrNull() != null)
{
workflow = workflowService.Get(id.AsInteger());
}
if (workflow != null)
{
if (workflow.CompletedDateTime == null)
{
/* Currently we cannot activate an activity in a workflow that is currently
* being processed. The workflow is held in-memory so the activity we would
* activate would not show up for the processor and probably never run.
*/
if (!workflow.IsProcessing)
{
bool hasError = false;
/* If they provided an ActivityType parameter then we need to activate
* a new activity in the workflow.
*/
if (parmActivityType != null)
{
string type = parmActivityType.ToString();
WorkflowActivityTypeCache activityType = null;
/* Get the type of activity */
if (type.AsGuidOrNull() != null)
{
activityType = WorkflowActivityTypeCache.Get(type.AsGuid());
}
else if (type.AsIntegerOrNull() != null)
{
activityType = WorkflowActivityTypeCache.Get(type.AsInteger());
}
if (activityType != null)
{
activity = WorkflowActivity.Activate(activityType, workflow);
/* Set any workflow attributes that were specified. */
foreach (var attr in attributes)
{
if (activity.Attributes.ContainsKey(attr.Key))
{
activity.SetAttributeValue(attr.Key, attr.Value.ToString());
}
}
}
else
{
context["Error"] = "Activity type was not found.";
hasError = true;
}
}
/* Process the existing Workflow. */
if (!hasError)
{
List <string> errorMessages;
workflowService.Process(workflow, out errorMessages);
if (errorMessages.Any())
{
context["Error"] = string.Join("; ", errorMessages.ToArray());
}
context["Workflow"] = workflow;
context["Activity"] = activity;
}
}
else
{
context["Error"] = "Cannot activate activity on workflow that is currently being processed.";
}
}
else
{
context["Error"] = "Workflow has already been completed.";
}
}
else
{
context["Error"] = "Workflow not found.";
}
}
else
{
context["Error"] = "Must specify one of WorkflowType or WorkflowId.";
}
base.OnRender(context, result);
//RenderAll( NodeList, context, result );
// TODO: Test this! - NodeList is empty here, so the call to RenderAll seems unnecessary?
}));
}
