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//
// TemplatedControl.cs
//
// Author:
// Jean-Philippe Bruyère <jp.bruyere@hotmail.com>
//
// Copyright (c) 2015 jp
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
using System;
using System.Xml.Serialization;
using System.ComponentModel;
using System.IO;
using System.Xml;
using System.Diagnostics;
using System.Linq;
namespace Crow
{
[AttributeUsage(AttributeTargets.Class)]
public class TemplateAttribute : Attribute
{
public string Path = "";
public TemplateAttribute(string path)
{
Path = path;
}
}
[AttributeUsage(AttributeTargets.Class)]
public class DefaultStyle : TemplateAttribute
{
public DefaultStyle(string path) : base(path){}
}
[AttributeUsage(AttributeTargets.Class)]
public class DefaultTemplate : TemplateAttribute
{
public DefaultTemplate(string path) : base(path){}
}
[AttributeUsage(AttributeTargets.Class)]
public class DefaultItemTemplate : TemplateAttribute
{
public DefaultItemTemplate(string path) : base(path){}
}
public abstract class TemplatedControl : PrivateContainer, IXmlSerializable
{
#region CTOR
public TemplatedControl () : base()
{
if (Interface.XmlLoaderCount > 0)
return;
loadTemplate ();
}
#endregion
string _template;
[XmlAttributeAttribute][DefaultValue(null)]
public string Template {
get { return _template; }
set {
if (Template == value)
return;
_template = value;
if (string.IsNullOrEmpty(_template))
loadTemplate ();
else
loadTemplate (Interface.Load (_template, this));
}
}
#region GraphicObject overrides
public override GraphicObject FindByName (string nameToFind)
{
//prevent name searching in template
return nameToFind == this.Name ? this : null;
}
#endregion
protected virtual void loadTemplate(GraphicObject template = null)
{
if (template == null) {
DefaultTemplate dt = (DefaultTemplate)this.GetType ().GetCustomAttributes (typeof(DefaultTemplate), true).FirstOrDefault();
this.SetChild (Interface.Load (dt.Path, this));
}else
this.SetChild (template);
this.ResolveBindings ();
}
#region IXmlSerializable
public override System.Xml.Schema.XmlSchema GetSchema(){ return null; }
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 (); //skip current node
while (!xr.EOF) {
xr.Read (); //read first child
if (!xr.IsStartElement ())
continue;
if (xr.Name == "Template") {
xr.Read ();
Type t = Type.GetType ("Crow." + xr.Name);
GraphicObject go = (GraphicObject)Activator.CreateInstance (t);
(go as IXmlSerializable).ReadXml (xr);
loadTemplate (go);
xr.Read ();//go close tag
xr.Read ();//Template close tag
break;
} else
xr.ReadInnerXml ();
}
}
} else
loadTemplate (Interface.Load (template, this));
//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);
}
}
}
public override void WriteXml(System.Xml.XmlWriter writer)
{
//TODO:
throw new NotImplementedException();
}
#endregion
}
}
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