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using System;
using System.ComponentModel;
using System.Xml.Serialization;
namespace Crow
{
[DefaultStyle("#Crow.Styles.Expandable.style")]
[DefaultTemplate("#Crow.Templates.Expandable.goml")]
public class Expandable : TemplatedContainer
{
#region CTOR
public Expandable() : base()
{
}
#endregion
#region Private fields
bool _isExpanded;
string caption;
string image;
Container _contentContainer;
#endregion
#region Event Handlers
public event EventHandler Expand;
public event EventHandler Collapse;
#endregion
#region GraphicObject overrides
public override void onMouseClick (object sender, MouseButtonEventArgs e)
{
IsExpanded = !IsExpanded;
base.onMouseClick (sender, e);
}
#endregion
public override GraphicObject Content {
get {
return _contentContainer == null ? null : _contentContainer.Child;
}
set {
_contentContainer.SetChild(value);
NotifyValueChanged ("HasContent", HasContent);
}
}
protected override void loadTemplate(GraphicObject template = null)
{
base.loadTemplate (template);
_contentContainer = this.child.FindByName ("Content") as Container;
}
public override void ResolveBindings ()
{
base.ResolveBindings ();
if (Content != null)
Content.ResolveBindings ();
}
#region Public properties
[XmlAttributeAttribute()][DefaultValue("Expandable")]
public string Caption {
get { return caption; }
set {
if (caption == value)
return;
caption = value;
NotifyValueChanged ("Caption", caption);
}
}
[XmlAttributeAttribute()][DefaultValue("#Crow.Images.Icons.expandable.svg")]
public string Image {
get { return image; }
set {
if (image == value)
return;
image = value;
NotifyValueChanged ("Image", image);
}
}
[XmlAttributeAttribute()][DefaultValue(false)]
public bool IsExpanded
{
get { return _isExpanded; }
set
{
if (value == _isExpanded)
return;
_isExpanded = value;
if (!HasContent)
_isExpanded = false;
NotifyValueChanged ("IsExpanded", _isExpanded);
if (_isExpanded)
onExpand (this, null);
else
onCollapse (this, null);
}
}
[XmlIgnore]public bool HasContent {
get { return _contentContainer == null ? false : _contentContainer.Child != null; }
}
#endregion
public virtual void onExpand(object sender, EventArgs e)
{
if (_contentContainer != null)
_contentContainer.Visible = true;
Expand.Raise (this, e);
}
public virtual void onCollapse(object sender, EventArgs e)
{
if (_contentContainer != null)
_contentContainer.Visible = false;
Collapse.Raise (this, e);
}
}
}
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