public OdfImageRenderFilter(IDictionary<Image, string> userImages, OdfTemplate odfDoc)
{
Debug.Assert (userImages != null);
Debug.Assert (odfDoc != null);
this.userImages = userImages;
this.resultDocument = odfDoc;
}
/// <summary>
/// 一部执行模板编译、渲染并返回结果
/// </summary>
/// <param name="odfPath"></param>
/// <returns></returns>
public static OdfTemplate RenderTemplate(string odfPath, IDictionary<string, object> context)
{
var odf = new OdfTemplate();
odf.Load(odfPath);
odf.Compile();
var resultDoc = odf.Render(context);
return resultDoc as OdfTemplate;
}
public static void Compile(OdfTemplate template)
{
var xml = new XmlDocument();
template.ReadMainContentXml(xml);
var nsmanager = new OdfNamespaceManager(xml.NameTable);
nsmanager.LoadOpenDocumentNamespaces();
//第1遍，先处理简单的Tag 替换
PreprocessElements(xml, nsmanager);
//第2遍，处理表格循环
ProcessTableRows(xml, nsmanager);
template.WriteXmlContent(xml);
}
public override object Clone()
{
var destDoc = new OdfTemplate();
this.CopyTo(destDoc);
return destDoc;
}
private void ResetTextEngine(IDictionary<Image, string> userImages, OdfTemplate resultDocument)
{
Debug.Assert(this.engine != null);
Debug.Assert(userImages != null);
Debug.Assert(resultDocument != null);
this.engine.Reset();
this.engine.RegisterFilter(typeof(string), new XmlStringRenderFilter());
this.engine.RegisterFilter(typeof(Image), new OdfImageRenderFilter(userImages, resultDocument));
}
public override IDocument Render(IDictionary<string, object> context)
{
Debug.Assert(this.engine != null);
if (context == null)
{
throw new ArgumentNullException("context");
}
var resultDoc = new OdfTemplate();
this.CopyTo(resultDoc);
var userImages = new Dictionary<Image, string>();
this.ResetTextEngine(userImages, resultDoc);
using (var inStream = this.GetEntryInputStream(this.MainContentEntryPath))
using (var reader = new StreamReader(inStream, Encoding.UTF8))
using (var ws = resultDoc.GetEntryOutputStream(resultDoc.MainContentEntryPath))
using (var writer = new StreamWriter(ws))
{
this.engine.Evaluate(context, reader, writer);
}
return resultDoc;
}