added project open save new

src/workspace_model.h

@@ -0,0 +1,64 @@
+#pragma once
+#include "core.h"
+#include <QStandardItemModel>
+#include <QStandardItem>
+#include <algorithm>
+
+namespace rcx {
+
+// Recursively add children of parentId as tree items under parentItem.
+inline void addWorkspaceChildren(QStandardItem* parentItem,
+                                 const NodeTree& tree,
+                                 uint64_t parentId,
+                                 void* subPtr) {
+    QVector<int> children = tree.childrenOf(parentId);
+    std::sort(children.begin(), children.end(), [&](int a, int b) {
+        return tree.nodes[a].offset < tree.nodes[b].offset;
+    });
+
+    for (int idx : children) {
+        const Node& node = tree.nodes[idx];
+
+        // Skip hex preview nodes — they are padding/filler, not meaningful fields
+        if (isHexNode(node.kind)) continue;
+
+        QString display;
+        if (node.kind == NodeKind::Struct) {
+            QString typeName = node.structTypeName.isEmpty()
+                ? node.name : node.structTypeName;
+            display = QStringLiteral("%1 (%2)")
+                .arg(typeName, node.resolvedClassKeyword());
+        } else {
+            display = QStringLiteral("%1 (%2)")
+                .arg(node.name, QString::fromLatin1(kindToString(node.kind)));
+        }
+
+        auto* item = new QStandardItem(display);
+        item->setData(QVariant::fromValue(subPtr), Qt::UserRole);
+        if (node.kind == NodeKind::Struct)
+            item->setData(QVariant::fromValue(node.id), Qt::UserRole + 1);
+        item->setData(QVariant::fromValue(node.id), Qt::UserRole + 2);  // nodeId for scroll
+
+        if (node.kind == NodeKind::Struct)
+            addWorkspaceChildren(item, tree, node.id, subPtr);
+
+        parentItem->appendRow(item);
+    }
+}
+
+inline void buildWorkspaceModel(QStandardItemModel* model,
+                                const NodeTree& tree,
+                                const QString& projectName,
+                                void* subPtr = nullptr) {
+    model->clear();
+    model->setHorizontalHeaderLabels({QStringLiteral("Name")});
+
+    auto* projectItem = new QStandardItem(projectName);
+    projectItem->setData(QVariant::fromValue(subPtr), Qt::UserRole);
+
+    addWorkspaceChildren(projectItem, tree, 0, subPtr);
+
+    model->appendRow(projectItem);
+}
+
+} // namespace rcx