static ChartPage LoadChartDocument(Version documentVersion, XmlElement node)
{
ChartPage chart = null;
ChartType chartType = ST.GetEnumValue(node.GetAttribute("type"), ChartType.MindMap);
switch (chartType)
{
case ChartType.MindMap:
chart = new MindMap(); // MindMapIO.LoadAsXml(chartElement);
break;
default:
return(null);
}
if (chart != null)
{
chart.Deserialize(documentVersion, node);
}
return(chart);
}
public static Document Load(XmlDocument dom)
{
if (dom.DocumentElement == null)
{
return(null);
}
// version
var documentVersion = Document.DocumentVersion;
if (dom.DocumentElement.HasAttribute("document_version"))
{
documentVersion = new Version(dom.DocumentElement.GetAttribute("document_version"));
}
else if (dom.DocumentElement.HasAttribute("editor_version"))
{
documentVersion = new Version(dom.DocumentElement.GetAttribute("editor_version"));
if (documentVersion.Major == 3) // 3.0早期的beta版本没有 documentVersion, 而其editor_version 可能略大 DocumentVersion
{
documentVersion = Document.DV_3;
}
}
if (documentVersion > DocumentVersion)
{
throw new Exception("Unsupport Document Version");
}
// old version document, one chart in a document, 1.5.0 or earlier
if (dom.DocumentElement.Name == "map")
{
return(LoadSingleMindMap(documentVersion, dom));
}
// new document, multi-charts in a document
if (dom.DocumentElement.Name != "document")
{
return(null);
}
//
var doc = new Document();
// information
var infos = dom.DocumentElement.SelectSingleNode("information") as XmlElement;
if (infos != null)
{
if (documentVersion < Document.DV_3) // 老式的写法
{
doc.Author = ST.ReadTextNode(infos, "Author");
doc.Company = ST.ReadTextNode(infos, "Company");
doc.Version = ST.ReadTextNode(infos, "Version");
doc.Description = ST.ReadTextNode(infos, "Description");
}
else
{
doc.Author = ST.ReadTextNode(infos, "author");
doc.Company = ST.ReadTextNode(infos, "company");
doc.Version = ST.ReadTextNode(infos, "version");
doc.Description = ST.ReadTextNode(infos, "description");
}
}
// attributes
var attrs = dom.DocumentElement.SelectSingleNode("attributes") as XmlElement;
if (attrs != null)
{
foreach (XmlNode attr in attrs.ChildNodes)
{
if (!(attr is XmlElement))
{
continue;
}
XmlElement attr_e = (XmlElement)attr;
if (attr_e.Name != "item")
{
continue;
}
doc.Attributes[attr_e.GetAttribute("name")] = attr_e.InnerText;
}
}
// charts
var charts = dom.DocumentElement.SelectSingleNode("charts") as XmlElement;
if (charts != null)
{
foreach (XmlNode chart in charts)
{
if (!(chart is XmlElement))
{
continue;
}
XmlElement chart_e = (XmlElement)chart;
if (chart_e.Name != "chart")
{
continue;
}
ChartPage cdoc = LoadChartDocument(documentVersion, chart_e);
if (cdoc != null)
{
doc.Charts.Add(cdoc);
}
}
doc.ActiveChartIndex = ST.GetIntDefault(charts.GetAttribute("active_chart"));
}
doc.Modified = false;
return(doc);
}