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// NodePage.qml — Displays 10 OPC UA nodes per page with tooltips.
import QtQuick
import QtQuick.Controls
import QtQuick.Layouts
import Bobink
Page {
id: nodePage
required property StackView stackRef
required property int pageNumber
required property var logFunction
readonly property var pages: [
{
title: "Server Info",
description: "Standard OPC UA server nodes (namespace 0)."
+ " CurrentTime updates live via monitoring.",
nodes: [
"ns=0;i=2258", // CurrentTime
"ns=0;i=2257", // StartTime
"ns=0;i=2259", // State
"ns=0;i=2261", // ProductName
"ns=0;i=2264" // SoftwareVersion
]
},
{
title: "Read-Write Scalars",
description: "Single-value nodes with read and write access.",
nodes: [
"ns=1;s=bool_rw_scalar",
"ns=1;s=int16_rw_scalar",
"ns=1;s=uint16_rw_scalar",
"ns=1;s=int32_rw_scalar",
"ns=1;s=uint32_rw_scalar",
"ns=1;s=int64_rw_scalar",
"ns=1;s=uint64_rw_scalar",
"ns=1;s=float_rw_scalar",
"ns=1;s=double_rw_scalar",
"ns=1;s=string_rw_scalar",
"ns=1;s=sbyte_rw_scalar",
"ns=1;s=byte_rw_scalar",
"ns=1;s=datetime_rw_scalar",
"ns=1;s=guid_rw_scalar",
"ns=1;s=bytestring_rw_scalar"
]
},
{
title: "Read-Only Scalars",
description: "Single-value nodes with read-only access.",
nodes: [
"ns=1;s=bool_ro_scalar",
"ns=1;s=int16_ro_scalar",
"ns=1;s=uint16_ro_scalar",
"ns=1;s=int32_ro_scalar",
"ns=1;s=uint32_ro_scalar",
"ns=1;s=int64_ro_scalar",
"ns=1;s=uint64_ro_scalar",
"ns=1;s=float_ro_scalar",
"ns=1;s=double_ro_scalar",
"ns=1;s=string_ro_scalar",
"ns=1;s=sbyte_ro_scalar",
"ns=1;s=byte_ro_scalar",
"ns=1;s=datetime_ro_scalar",
"ns=1;s=guid_ro_scalar",
"ns=1;s=bytestring_ro_scalar"
]
},
{
title: "Read-Write Arrays",
description: "Array nodes. Values are displayed comma-separated."
+ " To write, enter comma-separated values (e.g. \"1, 2, 3\")."
+ " Commas cannot appear inside individual values.",
nodes: [
"ns=1;s=bool_rw_array",
"ns=1;s=int16_rw_array",
"ns=1;s=uint16_rw_array",
"ns=1;s=int32_rw_array",
"ns=1;s=uint32_rw_array",
"ns=1;s=int64_rw_array",
"ns=1;s=uint64_rw_array",
"ns=1;s=float_rw_array",
"ns=1;s=double_rw_array",
"ns=1;s=string_rw_array",
"ns=1;s=sbyte_rw_array",
"ns=1;s=byte_rw_array",
"ns=1;s=datetime_rw_array",
"ns=1;s=guid_rw_array",
"ns=1;s=bytestring_rw_array"
]
},
{
title: "Non-Existent Nodes",
description: "These node IDs do not exist on the server."
+ " The row should show no value and no metadata in the tooltip.",
nodes: [
"ns=1;s=does_not_exist",
"ns=99;i=12345",
"ns=1;s=also_missing"
]
},
{
title: "Empty (Monitoring Test)",
description: "No nodes on this page. All previous pages are inactive,"
+ " so the server log should show zero active monitored items.",
nodes: []
}
]
readonly property var currentPage: pages[pageNumber - 1]
// OPC UA ServerState enum (Part 4, Table 120).
readonly property var serverStates: [
"Running", "Failed", "NoConfiguration", "Suspended",
"Shutdown", "Test", "CommunicationFault", "Unknown"
]
function formatValue(node) {
var v = node.value;
if (v === undefined || String(v) === "")
return "—";
// Map ServerState enum to human-readable string.
if (node.nodeId === "ns=0;i=2259" && !isNaN(v))
return serverStates[v] || String(v);
return String(v);
}
Component.onCompleted: nodePage.logFunction(
currentPage.title + " page loaded (" + currentPage.nodes.length + " nodes)")
ColumnLayout {
anchors.fill: parent
anchors.margins: 20
spacing: 4
// Header
RowLayout {
Label {
text: currentPage.title
font.bold: true
font.pointSize: 14
}
Label {
text: "(" + nodePage.pageNumber + "/" + nodePage.pages.length + ")"
color: "gray"
}
Item { Layout.fillWidth: true }
Button {
text: "Disconnect"
onClicked: Bobink.disconnectFromServer()
}
}
Label {
id: pageDescription
visible: currentPage.description !== undefined
text: currentPage.description || ""
wrapMode: Text.WordWrap
color: "gray"
font.italic: true
Layout.fillWidth: true
}
// Column headers
RowLayout {
Layout.fillWidth: true
Layout.leftMargin: 12
Layout.rightMargin: 12
spacing: 12
Label {
text: "Identifier"
font.bold: true
Layout.preferredWidth: 160
}
Label {
text: "Value"
font.bold: true
Layout.preferredWidth: 300
}
Label {
text: "Write"
font.bold: true
Layout.fillWidth: true
}
}
Rectangle {
id: separator
Layout.fillWidth: true
height: 1
color: "#ccc"
}
// Nodes
Repeater {
model: currentPage.nodes
ItemDelegate {
id: delegate
required property string modelData
required property int index
Layout.fillWidth: true
padding: 4
leftPadding: 12
rightPadding: 12
OpcUaMonitoredNode {
id: node
nodeId: delegate.modelData
monitored: nodePage.StackView.status === StackView.Active
onWriteCompleted: (success, message) => {
var short_id = node.nodeId.substring(node.nodeId.indexOf(";s=") + 3);
nodePage.logFunction(short_id + ": " + message);
}
}
background: Rectangle {
color: delegate.index % 2 === 0 ? "#f8f8f8" : "transparent"
radius: 2
}
contentItem: RowLayout {
spacing: 12
// Column 1: Display name if available, otherwise short ID.
Label {
text: {
if (node.info.displayName)
return node.info.displayName;
var idx = node.nodeId.indexOf(";s=");
return idx >= 0 ? node.nodeId.substring(idx + 3) : node.nodeId;
}
Layout.preferredWidth: 160
elide: Text.ElideRight
}
// Column 2: Live value (always visible)
Label {
text: nodePage.formatValue(node)
Layout.preferredWidth: 300
elide: Text.ElideRight
}
// Column 3: Edit area (writable) or READ-ONLY label
TextField {
id: editField
visible: node.writable
Layout.fillWidth: true
placeholderText: "Enter value..."
onAccepted: node.writeValue(text)
}
Button {
id: writeButton
visible: node.writable
text: "Write"
onClicked: node.writeValue(editField.text)
}
Label {
visible: !node.writable
text: "(READ-ONLY)"
color: "gray"
font.italic: true
Layout.fillWidth: true
}
}
ToolTip.visible: hovered
ToolTip.delay: 400
ToolTip.text:
"Display Name: " + (node.info.displayName || "—")
+ "\nDescription: " + (node.info.description || "—")
+ "\nNode Class: " + (node.info.nodeClass || "—")
+ "\nData Type: " + (node.info.dataType || "—")
+ "\nAccess Level: " + node.info.accessLevel
+ "\nStatus: " + (node.info.status || "—")
+ "\nSource Time: " + (node.info.sourceTimestamp.toLocaleString() || "—")
+ "\nServer Time: " + (node.info.serverTimestamp.toLocaleString() || "—")
}
}
Item { Layout.fillHeight: true }
// Navigation
RowLayout {
Layout.fillWidth: true
Button {
text: "← Previous"
visible: nodePage.pageNumber > 1
onClicked: nodePage.stackRef.pop()
}
Item { Layout.fillWidth: true }
Button {
text: "Next →"
visible: nodePage.pageNumber < nodePage.pages.length
onClicked: nodePage.stackRef.push("NodePage.qml", {
stackRef: nodePage.stackRef,
pageNumber: nodePage.pageNumber + 1,
logFunction: nodePage.logFunction
})
}
}
}
}
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