public DGNodeRefPropertyCommand(D dgNode, T thing,
RefToValue <P> rtv, string property, P newValue,
bool extendable)
: base(dgNode, thing, property, newValue, extendable)
{
this.mRTV = rtv;
}
public override object ConvertTo(ITypeDescriptorContext context,
System.Globalization.CultureInfo culture, object value,
Type destinationType)
{
RefToValue <T> rtv = value as RefToValue <T>;
if (rtv == null || !typeof(string).Equals(destinationType))
{
return(base.ConvertTo(context, culture, value,
destinationType));
}
if (rtv.mValue == null)
{
return("");
}
StateMachine sm = rtv.mScene.StateMachine;
int i = (int)rtv.mCountProperty.GetValue(sm, null);
if (i == 0)
{
return("[?] " + rtv.mValue.Name);
}
T[] values = rtv.mArrayProperty.GetValue(sm, null) as T[];
for (i = values.Length - 1; i >= 0; i--)
{
if (rtv.mValue == values[i])
{
break;
}
}
string result;
int j = values.Length.ToString("X").Length;
if (i < 0)
{
result = string.Concat("[", new string('?', j), "] ");
}
else
{
result = string.Concat("[", i.ToString("X" + j), "] ");
}
return(result + rtv.mValue.Name);
}
public override object EditValue(ITypeDescriptorContext context,
IServiceProvider provider, object value)
{
if (provider == null)
{
return(value);
}
RefToValue <T> rtv = value as RefToValue <T>;
IWindowsFormsEditorService edSvc
= (IWindowsFormsEditorService)provider.GetService(
typeof(IWindowsFormsEditorService));
if (rtv == null || edSvc == null)
{
return(value);
}
StateMachine sm = rtv.mScene.StateMachine;
int index = (int)rtv.mCountProperty.GetValue(sm, null);
string[] items = new string[index + 1];
items[0] = "";
T[] values = rtv.mArrayProperty.GetValue(sm, null) as T[];
if (index > 0)
{
int i = index.ToString("X").Length;
string fmt = "[{0:X" + i + "}] ";
if (rtv.mValue == null)
{
for (i = index - 1; i >= 0; i--)
{
items[i + 1] = string.Format(fmt, i)
+ values[i].Name;
}
index = 0;
}
else
{
index = -1;
T val;
for (i = values.Length - 1; i >= 0; i--)
{
val = values[i];
if (rtv.mValue == val)
{
index = i + 1;
}
items[i + 1] = string.Format(fmt, i) + val.Name;
}
}
}
else
{
index = rtv.mValue == null ? 0 : -1;
}
ListBox lb = new ListBox();
TextBox tb = new TextBox();
tb.AutoSize = true;
tb.Font = lb.Font;
tb.Margin = new Padding(0);
tb.Multiline = true;
tb.Lines = items;
tb.PerformLayout();
lb.IntegralHeight = false;
lb.Margin = new Padding(0);
lb.Size = tb.PreferredSize;
lb.Tag = edSvc;
lb.Items.AddRange(items);
lb.PerformLayout();
if (index >= 0)
{
lb.SelectedIndex = index;
}
lb.SelectedIndexChanged +=
new EventHandler(lb_SelectedIndexChanged);
edSvc.DropDownControl(lb);
index = lb.SelectedIndex;
if (index == 0)
{
rtv.mValue = null;
}
else if (index > 0)
{
rtv.mValue = values[index];
}
return(value);
}