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XmlRenderer.cs
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XmlRenderer.cs
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using System;
using System.IO;
using System.Linq;
using System.Xml;
using WhiskWork.Core;
using WhiskWork.Generic;
namespace WhiskWork.Web
{
public class XmlRenderer : IWorkStepRenderer
{
private readonly IReadableWorkflowRepository _workflowRepository;
public XmlRenderer(IReadableWorkflowRepository workflowRepository)
{
_workflowRepository = workflowRepository;
}
public string ContentType
{
get { return "text/html"; }
}
public void Render(Stream stream, string path)
{
if (string.IsNullOrEmpty(path) || WorkStep.Root.Path == path)
{
Render(stream, WorkStep.Root);
}
else
{
var workStep = _workflowRepository.GetWorkStep(path);
Render(stream, workStep);
}
}
public void Render(Stream stream, WorkStep workStep)
{
using (var writer = XmlWriter.Create(stream))
{
if(writer==null)
{
throw new ArgumentException("Couldn't create XmlWriter");
}
writer.WriteStartDocument();
RenderWorkSteps(writer, workStep);
writer.WriteEndDocument();
}
}
private void RenderWorkSteps(XmlWriter writer, WorkStep workStep)
{
writer.WriteStartElement("WorkSteps");
foreach (var childWorkStep in _workflowRepository.GetChildWorkSteps(workStep.Path).OrderBy(ws => ws.Ordinal))
{
RenderWorkStep(writer, childWorkStep);
}
writer.WriteEndElement(); //WorkSteps
}
private void RenderWorkStep(XmlWriter writer, WorkStep workStep)
{
writer.WriteStartElement("WorkStep");
writer.WriteStartAttribute("id");
writer.WriteValue(GenerateWorkStepId(workStep));
writer.WriteEndAttribute();
writer.WriteStartAttribute("workItemClass");
writer.WriteValue(workStep.WorkItemClass);
writer.WriteEndAttribute();
RenderWorkSteps(writer, workStep);
RenderWorkItems(writer, workStep);
writer.WriteEndElement(); //WorkSteps
}
private void RenderWorkItems(XmlWriter writer, WorkStep workStep)
{
writer.WriteStartElement("WorkItems");
foreach (var workItem in _workflowRepository.GetWorkItems(workStep.Path).OrderBy(wi => wi.Ordinal))
{
RenderWorkItem(writer, workItem);
}
writer.WriteEndElement(); //WorkItems
}
private static void RenderWorkItem(XmlWriter writer, WorkItem item)
{
writer.WriteStartElement("WorkItem");
writer.WriteStartAttribute("id");
writer.WriteValue(item.Id);
writer.WriteEndAttribute();
if(item.Ordinal.HasValue)
{
RenderAttribute(writer, "ordinal", XmlConvert.ToString(item.Ordinal.Value));
}
if(item.Timestamp.HasValue)
{
RenderAttribute(writer, "timestamp", XmlConvert.ToString(item.Timestamp.Value, XmlDateTimeSerializationMode.RoundtripKind));
}
if (item.LastMoved.HasValue)
{
RenderAttribute(writer, "lastmoved", XmlConvert.ToString(item.LastMoved.Value, XmlDateTimeSerializationMode.RoundtripKind));
}
writer.WriteStartAttribute("classes");
writer.WriteValue(item.Classes.Join(' '));
writer.WriteEndAttribute();
RenderProperties(writer, item);
writer.WriteEndElement(); //WorkItem
}
private static void RenderAttribute(XmlWriter writer, string attributeName, string value)
{
writer.WriteStartAttribute(attributeName);
writer.WriteValue(value);
writer.WriteEndAttribute();
}
private static void RenderProperties(XmlWriter writer, WorkItem workItem)
{
writer.WriteStartElement("Properties");
foreach (var keyValue in workItem.Properties)
{
writer.WriteStartElement("Property");
writer.WriteStartAttribute("name");
writer.WriteValue(keyValue.Key);
writer.WriteEndAttribute();
writer.WriteValue(keyValue.Value);
writer.WriteEndElement(); //Property
}
writer.WriteEndElement(); //Properties
}
private static string GenerateWorkStepId(WorkStep step)
{
return step.Path.Remove(0, 1).Replace('/', '.');
}
}
}