Доделал переключение каналов, небольшой рефакторинг

NooLiteClient.qml

@@ -0,0 +1,50 @@
+import QtQuick 2.0
+
+QtObject {
+    id: root
+
+    property string serviceUrl: undefined
+
+    signal modelLoad(var data)
+    signal error(string text)
+
+    function _get(url, callback) {
+        var request = new XMLHttpRequest()
+
+        request.open('GET', url)
+        request.onreadystatechange = function () {
+            if (request.readyState !== XMLHttpRequest.DONE) {
+                return
+            }
+
+            if (request.status === 200) {
+                if (callback !== undefined) {
+                    callback(JSON.parse(request.responseText))
+                }
+
+                return
+            }
+
+            root.error(qsTr("[%1] Request error: %2").
+                       arg(request.status).
+                       arg(request.statusText))
+        }
+
+        request.send()
+    }
+
+    function loadModel() {
+        _get(root.serviceUrl + '/static/channels.js', root.modelLoad)
+    }
+
+    function switchChannel(channelId) {
+        _get(root.serviceUrl + '/noolite/switch/%1'.arg(channelId), function (data) {
+            if (data.error) {
+                root.error(qsTr("Server error: %1").arg(data.error))
+                return
+            }
+
+            console.log(data.command, data.channel)
+        })
+    }
+}