Fetch value in response to keyup

This key function now works like the input and change events.

Fixes #111

Ooui/Client.js

@@ -31,6 +31,12 @@ const mouseEvents = {
     wheel: true,
 };
 
+const inputEvents = {
+    input: true,
+    change: true,
+    keyup: true,
+};
+
 // Try to close the socket gracefully
 window.onbeforeunload = function() {
     if (socket != null) {
@@ -252,7 +258,7 @@ function msgListen (m) {
             id: m.id,
             k: m.k,
         };
-        if (m.k === "change" || m.k === "input") {
+        if (inputEvents[m.k]) {
             em.v = (node.tagName === "INPUT" && node.type === "checkbox") ?
                 node.checked :
                 node.value;

Ooui/Input.cs

@@ -77,7 +77,7 @@ namespace Ooui
 
         protected override bool TriggerEventFromMessage (Message message)
         {
-            if (message.TargetId == Id && message.MessageType == MessageType.Event && (message.Key == "change" || message.Key == "input")) {
+            if (message.TargetId == Id && message.MessageType == MessageType.Event && (message.Key == "change" || message.Key == "input" || message.Key == "keyup")) {
                 // Don't need to notify here because the base implementation will fire the event
                 if (Type == InputType.Checkbox) {
                     UpdateBooleanAttributeProperty ("checked", message.Value != null ? Convert.ToBoolean (message.Value) : false, "IsChecked");

Samples/TodoSample.cs

@@ -46,6 +46,7 @@ namespace Samples
 
             var heading = new Heading ("Todo List");
             var subtitle = new Paragraph ("This is the shared todo list of the world.");
+            var count = new Paragraph ("0 chars");
             var inputForm = new Form {
                 ClassName = "form-inline"
             };
@@ -61,6 +62,10 @@ namespace Samples
                 Type = ButtonType.Submit,
                 ClassName = "btn btn-danger",
             };
+            void UpdateCount ()
+            {
+                count.Text = $"{input.Value.Length} chars";
+            }
             void AddItem ()
             {
                 if (string.IsNullOrWhiteSpace (input.Value))
@@ -71,6 +76,7 @@ namespace Samples
                 };
                 items.InsertBefore (item, items.FirstChild);
                 input.Value = "";
+                UpdateCount ();
             }
             addbtn.Click += (s, e) => {
                 AddItem ();
@@ -78,6 +84,9 @@ namespace Samples
             inputForm.Submit += (s, e) => {
                 AddItem ();
             };
+            input.KeyUp += (s, e) => {
+                UpdateCount ();
+            };
             clearbtn.Click += (s, e) => {
                 var toremove = new List<Node> ();
                 foreach (Item i in items.Children) {
@@ -92,6 +101,7 @@ namespace Samples
             app.AppendChild (subtitle);
             inputForm.AppendChild (input);
             inputForm.AppendChild (addbtn);
+            inputForm.AppendChild (count);
             app.AppendChild (inputForm);
             app.AppendChild (items);
             app.AppendChild (clearbtn);