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using System;
using ShiftUI;
namespace ShiftUI.Design
{
// A IDataObject that supports Widget and Widget[] format
//
internal class WidgetDataObject : IDataObject
{
private object _data = null;
private string _format = null;
public WidgetDataObject ()
{
_data = null;
_format = null;
}
public WidgetDataObject (Widget control)
{
SetData (control);
}
public WidgetDataObject (Widget[] controls)
{
SetData (controls);
}
public object GetData (Type format)
{
return this.GetData (format.ToString ());
}
public object GetData (string format)
{
return this.GetData (format, true);
}
public object GetData (string format, bool autoConvert)
{
if (format == _format) {
return _data;
}
return null;
}
public bool GetDataPresent (Type format)
{
return this.GetDataPresent (format.ToString());
}
public bool GetDataPresent (string format)
{
return this.GetDataPresent (format, true);
}
public bool GetDataPresent (string format, bool autoConvert)
{
if (format == _format) {
return true;
}
return false;
}
public string[] GetFormats ()
{
return this.GetFormats (true);
}
public string[] GetFormats (bool autoConvert)
{
string[] formats = new string[2];
formats[0] = typeof (Widget).ToString ();
formats[1] = typeof (Widget[]).ToString ();
return formats;
}
public void SetData (object data)
{
if (data is Widget)
this.SetData (typeof (Widget), data);
else if (data is Widget[])
this.SetData (typeof (Widget[]), data);
}
public void SetData (Type format, object data)
{
this.SetData (format.ToString (), data);
}
public void SetData (string format, object data)
{
this.SetData (format, true, data);
}
public void SetData (string format, bool autoConvert, object data)
{
if (ValidateFormat (format)) {
_data = data;
_format = format;
}
}
private bool ValidateFormat (string format)
{
bool valid = false;
string[] formats = GetFormats ();
foreach (string f in formats) {
if (f == format) {
valid = true;
break;
}
}
return valid;
}
}
}
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