public Instantiator(Stream stream)
{
#if DEBUG_LOAD
Stopwatch loadingTime = new Stopwatch();
loadingTime.Start();
#endif
using (IMLReader itr = new IMLReader(stream)){
loader = itr.GetLoader();
RootType = itr.RootType;
}
#if DEBUG_LOAD
loadingTime.Stop();
Debug.WriteLine("IML Instantiator creation '{2}' : {0} ticks, {1} ms",
loadingTime.ElapsedTicks, loadingTime.ElapsedMilliseconds, imlPath);
#endif
}
public Instantiator(string path)
{
imlPath = path;
#if DEBUG_LOAD
Stopwatch loadingTime = new Stopwatch();
loadingTime.Start();
#endif
try {
using (IMLReader itr = new IMLReader(path)){
loader = itr.GetLoader();
RootType = itr.RootType;
}
} catch (Exception ex) {
throw new Exception("Error loading <" + path + ">:\n", ex);
}
#if DEBUG_LOAD
loadingTime.Stop();
Debug.WriteLine("IML Instantiator creation '{2}' : {0} ticks, {1} ms",
loadingTime.ElapsedTicks, loadingTime.ElapsedMilliseconds, path);
#endif
}
public override void ReadXml(System.Xml.XmlReader reader)
{
//Template could be either an attribute containing path or expressed inlined
//as a Template Element
using (System.Xml.XmlReader subTree = reader.ReadSubtree())
{
subTree.Read();
string template = reader.GetAttribute("Template");
string tmp = subTree.ReadOuterXml();
//Load template from path set as attribute in templated control
if (string.IsNullOrEmpty(template))
{
//seek for template tag first
using (XmlReader xr = new XmlTextReader(tmp, XmlNodeType.Element, null)) {
//load template first if inlined
xr.Read(); //read first child
xr.Read(); //skip root node
while (!xr.EOF)
{
if (!xr.IsStartElement())
{
xr.Read();
continue;
}
if (xr.Name == "ItemTemplate")
{
string dataType = "default", datas = "", itemTmp;
while (xr.MoveToNextAttribute())
{
if (xr.Name == "DataType")
{
dataType = xr.Value;
}
else if (xr.Name == "Data")
{
datas = xr.Value;
}
}
xr.MoveToElement();
itemTmp = xr.ReadInnerXml();
if (ItemTemplates == null)
{
ItemTemplates = new Dictionary <string, ItemTemplate> ();
}
using (IMLReader iTmp = new IMLReader(null, itemTmp)) {
ItemTemplates [dataType] =
new ItemTemplate(iTmp.RootType, iTmp.GetLoader(), dataType, datas);
}
if (!string.IsNullOrEmpty(datas))
{
ItemTemplates [dataType].CreateExpandDelegate(this);
}
continue;
}
if (xr.Name == "Template")
{
xr.Read();
Type t = Type.GetType("Crow." + xr.Name);
if (t == null)
{
Assembly a = Assembly.GetEntryAssembly();
foreach (Type expT in a.GetExportedTypes())
{
if (expT.Name == xr.Name)
{
t = expT;
}
}
}
GraphicObject go = (GraphicObject)Activator.CreateInstance(t);
(go as IXmlSerializable).ReadXml(xr);
loadTemplate(go);
continue;
}
xr.ReadInnerXml();
}
}
}
else
{
loadTemplate(CurrentInterface.Load(template));
}
//if no template found, load default one
if (this.child == null)
{
loadTemplate();
}
//normal xml read
using (XmlReader xr = new XmlTextReader(tmp, XmlNodeType.Element, null)) {
xr.Read();
base.ReadXml(xr);
}
}
}
/// <summary>
/// Parse child node an generate corresponding msil
/// </summary>
void readChildren(IMLReader reader, Type crowType, bool templateLoading = false)
{
MethodInfo miAddChild = null;
bool endTagReached = false;
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.EndElement:
endTagReached = true;
break;
case XmlNodeType.Element:
//Templates
if (reader.Name == "Template" ||
reader.Name == "ItemTemplate")
{
reader.Skip();
continue;
}
if (miAddChild == null)
{
if (typeof(Group).IsAssignableFrom(crowType))
{
miAddChild = typeof(Group).GetMethod("AddChild");
}
else if (typeof(Container).IsAssignableFrom(crowType))
{
miAddChild = typeof(Container).GetMethod("SetChild");
}
else if (typeof(TemplatedContainer).IsAssignableFrom(crowType) && !templateLoading)
{
miAddChild = typeof(TemplatedContainer).GetProperty("Content").GetSetMethod();
}
else if (typeof(TemplatedGroup).IsAssignableFrom(crowType) && !templateLoading)
{
miAddChild = typeof(TemplatedGroup).GetMethod("AddItem",
BindingFlags.Instance | BindingFlags.Public);
}
else if (typeof(TemplatedControl).IsAssignableFrom(crowType))
{
miAddChild = typeof(TemplatedControl).GetMethod("loadTemplate",
BindingFlags.Instance | BindingFlags.NonPublic);
}
else if (typeof(PrivateContainer).IsAssignableFrom(crowType))
{
miAddChild = typeof(PrivateContainer).GetMethod("SetChild",
BindingFlags.Instance | BindingFlags.NonPublic);
}
}
//push current instance on stack for parenting
//loc_0 will be used for child
reader.il.Emit(OpCodes.Ldloc_0);
Type t = Type.GetType("Crow." + reader.Name);
if (t == null)
{
Assembly a = Assembly.GetEntryAssembly();
foreach (Type expT in a.GetExportedTypes())
{
if (expT.Name == reader.Name)
{
t = expT;
}
}
}
if (t == null)
{
throw new Exception(reader.Name + " type not found");
}
reader.il.Emit(OpCodes.Newobj, t.GetConstructors() [0]); //TODO:search parameterless ctor
reader.il.Emit(OpCodes.Stloc_0); //child is now loc_0
CompilerServices.emitSetCurInterface(il);
reader.emitLoader(t);
reader.il.Emit(OpCodes.Ldloc_0); //load child on stack for parenting
if (miAddChild == null)
{
System.Diagnostics.Debugger.Break();
}
reader.il.Emit(OpCodes.Callvirt, miAddChild);
reader.il.Emit(OpCodes.Stloc_0); //reset local to current go
reader.il.Emit(OpCodes.Ldloc_0); //save current go onto the stack if child has to be added
break;
}
if (endTagReached)
{
break;
}
}
}
void emitLoader(Type crowType)
{
string tmpXml = ReadOuterXml();
il.Emit(OpCodes.Ldloc_0); //save current go onto the stack if child has to be added
#region Template and ItemTemplates loading
if (typeof(TemplatedControl).IsAssignableFrom(crowType))
{
//if its a template, first read template elements
using (IMLReader reader = new IMLReader(il, tmpXml)) {
string templatePath = reader.GetAttribute("Template");
//string itemTemplatePath = reader.GetAttribute ("ItemTemplate");
List <string[]> itemTemplateIds = new List <string[]> ();
bool inlineTemplate = false;
reader.Read();
int depth = reader.Depth + 1;
while (reader.Read())
{
if (!reader.IsStartElement() || reader.Depth > depth)
{
continue;
}
if (reader.Name == "Template")
{
inlineTemplate = true;
reader.Read();
readChildren(reader, crowType, true);
}
else if (reader.Name == "ItemTemplate")
{
string dataType = "default", datas = "", path = "";
while (reader.MoveToNextAttribute())
{
if (reader.Name == "DataType")
{
dataType = reader.Value;
}
else if (reader.Name == "Data")
{
datas = reader.Value;
}
else if (reader.Name == "Path")
{
path = reader.Value;
}
}
reader.MoveToElement();
using (IMLReader iTmp = new IMLReader(null, reader.ReadInnerXml())) {
string uid = Guid.NewGuid().ToString();
Interface.Instantiators [uid] =
new ItemTemplate(iTmp.RootType, iTmp.GetLoader(), dataType, datas);
itemTemplateIds.Add(new string[] { dataType, uid, datas });
}
}
}
if (!inlineTemplate)
{
reader.il.Emit(OpCodes.Ldloc_0); //Load this templateControl ref
if (string.IsNullOrEmpty(templatePath))
{
reader.il.Emit(OpCodes.Ldnull); //default template loading
}
else
{
reader.il.Emit(OpCodes.Ldarg_1); //load currentInterface
reader.il.Emit(OpCodes.Ldstr, templatePath); //Load template path string
reader.il.Emit(OpCodes.Callvirt, //call Interface.Load(path)
typeof(Interface).GetMethod("Load", BindingFlags.Instance | BindingFlags.Public));
}
reader.il.Emit(OpCodes.Callvirt, //load template
crowType.GetMethod("loadTemplate", BindingFlags.Instance | BindingFlags.NonPublic));
}
foreach (string[] iTempId in itemTemplateIds)
{
reader.il.Emit(OpCodes.Ldloc_0); //load TempControl ref
reader.il.Emit(OpCodes.Ldfld, //load ItemTemplates dic field
typeof(TemplatedGroup).GetField("ItemTemplates"));
reader.il.Emit(OpCodes.Ldstr, iTempId[0]); //load key
reader.il.Emit(OpCodes.Ldstr, iTempId[1]); //load value
reader.il.Emit(OpCodes.Callvirt,
typeof(Interface).GetMethod("GetItemTemplate"));
reader.il.Emit(OpCodes.Callvirt,
typeof(Dictionary <string, ItemTemplate>).GetMethod("set_Item",
new Type[] { typeof(string), typeof(ItemTemplate) }));
if (!string.IsNullOrEmpty(iTempId [2]))
{
//expand delegate creation
reader.il.Emit(OpCodes.Ldloc_0); //load TempControl ref
reader.il.Emit(OpCodes.Ldfld, //load ItemTemplates dic field
typeof(TemplatedGroup).GetField("ItemTemplates"));
reader.il.Emit(OpCodes.Ldstr, iTempId [0]); //load key
reader.il.Emit(OpCodes.Callvirt,
typeof(Dictionary <string, ItemTemplate>).GetMethod("get_Item",
new Type[] { typeof(string) }));
reader.il.Emit(OpCodes.Ldloc_0); //load root of treeView
reader.il.Emit(OpCodes.Callvirt,
typeof(ItemTemplate).GetMethod("CreateExpandDelegate"));
}
}
}
}
#endregion
using (IMLReader reader = new IMLReader(il, tmpXml)){
reader.Read();
#region Styling and default values loading
if (reader.HasAttributes)
{
string style = reader.GetAttribute("Style");
if (!string.IsNullOrEmpty(style))
{
PropertyInfo pi = crowType.GetProperty("Style");
CompilerServices.EmitSetValue(reader.il, pi, style);
}
}
reader.il.Emit(OpCodes.Ldloc_0);
reader.il.Emit(OpCodes.Callvirt, typeof(GraphicObject).GetMethod("loadDefaultValues"));
#endregion
#region Attributes reading
if (reader.HasAttributes)
{
MethodInfo miAddBinding = typeof(GraphicObject).GetMethod("BindMember");
while (reader.MoveToNextAttribute())
{
if (reader.Name == "Style")
{
continue;
}
MemberInfo mi = crowType.GetMember(reader.Name).FirstOrDefault();
if (mi == null)
{
throw new Exception("Member '" + reader.Name + "' not found in " + crowType.Name);
}
if (mi.MemberType == MemberTypes.Event)
{
CompilerServices.emitBindingCreation(reader.il, reader.Name, reader.Value);
continue;
}
PropertyInfo pi = mi as PropertyInfo;
if (pi == null)
{
throw new Exception("Member '" + reader.Name + "' not found in " + crowType.Name);
}
if (reader.Value.StartsWith("{"))
{
CompilerServices.emitBindingCreation(reader.il, reader.Name, reader.Value.Substring(1, reader.Value.Length - 2));
}
else
{
CompilerServices.EmitSetValue(reader.il, pi, reader.Value);
}
}
reader.MoveToElement();
}
#endregion
if (reader.IsEmptyElement)
{
reader.il.Emit(OpCodes.Pop); //pop saved ref to current object
return;
}
readChildren(reader, crowType);
}
il.Emit(OpCodes.Pop); //pop saved ref to current object
}
