feat(browser): add canonical read-only Signal Catalog for SCL and dis…

…covery
masarray · Sep 27, 2026 · Sep 27, 2026 · Sep 27, 2026 · Sep 27, 2026 · Sep 27, 2026
commit 50573164ef2e2aa0217396badd58ba955857d474
diff --git a/apps/ied_simulator/qml/BrowserSignalCatalog.qml b/apps/ied_simulator/qml/BrowserSignalCatalog.qml
@@ -0,0 +1,163 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+import QtQuick
+import QtQuick.Controls
+import QtQuick.Layouts
+
+// Read-only entry point for both Open SCL and live MMS discovery. The catalog
+// derives solely from the canonical engineering context; it never creates a
+// DataSet, connects another association or enables reporting implicitly.
+Dialog {
+    id: root
+    objectName: "iedSignalCatalog"
+    required property var theme
+    required property var context
+    signal dataSetRequested(string reference)
+    signal browseRequested()
+
+    title: "Signal Catalog"
+    modal: true
+    width: Math.min(650, Overlay.overlay ? Overlay.overlay.width - 32 : 650)
+    height: Math.min(520, Overlay.overlay ? Overlay.overlay.height - 32 : 520)
+    anchors.centerIn: Overlay.overlay
+    standardButtons: Dialog.Close
+
+    readonly property var canonicalDataSets: context.loaded ? context.dataSets : []
+
+    contentItem: ColumnLayout {
+        spacing: 10
+
+        Label {
+            Layout.fillWidth: true
+            text: root.context.iedName + "  ·  " + root.context.authority
+            color: root.theme.text
+            font.pixelSize: root.theme.labelSize
+            font.weight: Font.DemiBold
+            elide: Text.ElideMiddle
+        }
+        Label {
+            Layout.fillWidth: true
+            text: "Choose exact DataSet members or browse the complete canonical model."
+            color: root.theme.textSoft
+            font.pixelSize: root.theme.captionSize
+            wrapMode: Text.WordWrap
+        }
+        RowLayout {
+            Layout.fillWidth: true
+            spacing: 8
+            Button {
+                objectName: "iedCatalogDatasetSignals"
+                text: "Dataset Signals"
+                enabled: root.canonicalDataSets.length > 0
+                onClicked: {
+                    root.dataSetRequested(root.canonicalDataSets[0].reference)
+                    root.close()
+                }
+            }
+            Button {
+                objectName: "iedCatalogBrowseSignals"
+                text: "Browse All Signals"
+                onClicked: {
+                    root.browseRequested()
+                    root.close()
+                }
+            }
+            Item { Layout.fillWidth: true }
+            Label {
+                text: root.canonicalDataSets.length + " DataSet(s)"
+                color: root.theme.muted
+                font.pixelSize: root.theme.captionSize
+            }
+        }
+
+        Rectangle { Layout.fillWidth: true; Layout.preferredHeight: 1; color: root.theme.lineSoft }
+        Label {
+            text: "DATASET SIGNALS · ORDERED IED MEMBERSHIP"
+            color: root.theme.muted
+            font.pixelSize: root.theme.captionSize
+            font.weight: Font.DemiBold
+        }
+
+        ListView {
+            id: dataSetsView
+            objectName: "iedSignalCatalogDataSets"
+            Layout.fillWidth: true
+            Layout.fillHeight: true
+            clip: true
+            reuseItems: true
+            model: root.canonicalDataSets
+            spacing: 2
+            ScrollBar.vertical: ScrollBar {}
+
+            delegate: Rectangle {
+                required property int index
+                required property var modelData
+                width: ListView.view.width
+                height: 48
+                radius: 5
+                color: dsMouse.containsMouse ? root.theme.surfaceRaised : root.theme.surface
+                border.width: 1
+                border.color: root.theme.lineSoft
+                RowLayout {
+                    anchors.fill: parent
+                    anchors.leftMargin: 10
+                    anchors.rightMargin: 10
+                    spacing: 8
+                    ColumnLayout {
+                        Layout.fillWidth: true
+                        spacing: 2
+                        Label {
+                            Layout.fillWidth: true
+                            text: modelData.reference || "DataSet"
+                            color: root.theme.text
+                            font.pixelSize: root.theme.labelSize
+                            elide: Text.ElideMiddle
+                        }
+                        Label {
+                            Layout.fillWidth: true
+                            text: modelData.usedByReports && modelData.usedByReports.length
+                                  ? "RCB: " + modelData.usedByReports.join(", ")
+                                  : "RCB binding not identified in model"
+                            color: root.theme.muted
+                            font.pixelSize: root.theme.captionSize
+                            elide: Text.ElideMiddle
+                        }
+                    }
+                    Label {
+                        text: (modelData.memberCount || 0) + " members"
+                        color: root.theme.textSoft
+                        font.pixelSize: root.theme.captionSize
+                    }
+                    Label {
+                        text: "›"
+                        color: root.theme.accent
+                        font.pixelSize: root.theme.labelSize
+                    }
+                }
+                MouseArea {
+                    id: dsMouse
+                    anchors.fill: parent
+                    hoverEnabled: true
+                    onClicked: {
+                        root.dataSetRequested(modelData.reference)
+                        root.close()
+                    }
+                }
+            }
+
+            Label {
+                anchors.centerIn: parent
+                visible: dataSetsView.count === 0
+                text: "No DataSets in this canonical model. Browse All Signals instead."
+                color: root.theme.muted
+                font.pixelSize: root.theme.labelSize
+            }
+        }
+        Label {
+            Layout.fillWidth: true
+            text: "Viewing never changes IED membership or writes an RCB. Report enable and GI remain explicit actions."
+            color: root.theme.muted
+            font.pixelSize: root.theme.captionSize
+            wrapMode: Text.WordWrap
+        }
+    }
+}