Ooui-tws-port/Ooui/TextArea.cs

67 lines
1.8 KiB
C#

using System;
namespace Ooui
{
public class TextArea : FormControl
{
public event TargetEventHandler Change {
add => AddEventListener ("change", value);
remove => RemoveEventListener ("change", value);
}
public event TargetEventHandler Input {
add => AddEventListener ("input", value);
remove => RemoveEventListener ("input", value);
}
string val = "";
public string Value {
get => val;
set => SetProperty (ref val, value ?? "", "value");
}
public int Rows {
get => GetAttribute ("rows", 2);
set => SetAttributeProperty ("rows", value);
}
public int Columns {
get => GetAttribute ("cols", 20);
set => SetAttributeProperty ("cols", value);
}
protected override bool HtmlNeedsFullEndElement => true;
public TextArea ()
: base ("textarea")
{
// Subscribe to the change event so we always get up-to-date values
Change += (s, e) => {};
}
public TextArea (string text)
: this ()
{
Value = text;
}
protected override bool TriggerEventFromMessage (Message message)
{
if (message.TargetId == Id && message.MessageType == MessageType.Event && (message.Key == "change" || message.Key == "input")) {
// Don't need to notify here because the base implementation will fire the event
val = message.Value != null ? Convert.ToString (message.Value) : "";
}
return base.TriggerEventFromMessage (message);
}
#if !NO_XML
public override void WriteInnerHtml (System.Xml.XmlWriter w)
{
w.WriteString (val ?? "");
}
#endif
}
}