source: capability panels as side-stack pages, with a probe for the path

src/ui_source.cpp

@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: MIT
+// SPDX-FileCopyrightText: 2026 Martino Ferrari
+
+#include "source/registry.hpp"
+#include "ui_app.hpp"
+
+#include <adwaita.h>
+
+namespace udpscope {
+namespace ui_impl {
+
+void build_source_panels(App& app) {
+  if (app.side_stack == nullptr || app.acq == nullptr || app.acq->source() == nullptr) return;
+  SourceKind* kind = find_kind(app.source_kind);
+  if (kind == nullptr) return;
+  for (const SourcePanel& p : kind->make_panels(*app.acq->source())) {
+    if (p.widget == nullptr || p.id.empty()) continue;
+    // Each page scrolls on its own, like Measure and Signals: panels differ in height.
+    GtkWidget* scroller = gtk_scrolled_window_new();
+    gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroller), GTK_POLICY_NEVER,
+                                   GTK_POLICY_AUTOMATIC);
+    gtk_scrolled_window_set_child(GTK_SCROLLED_WINDOW(scroller), p.widget);
+    const std::string name = "source-" + p.id;
+    // An empty title on purpose, as for the built-in tabs: the pill is an icon, and
+    // `name_side_tabs()` puts `title` on it as tooltip and accessible name.
+    adw_view_stack_add_titled_with_icon(
+        ADW_VIEW_STACK(app.side_stack), scroller, name.c_str(), "",
+        p.icon.empty() ? "applications-engineering-symbolic" : p.icon.c_str());
+    app.source_panels.push_back({name, p.title, p.widget});
+  }
+  // Disconnected until the first Connected event says otherwise.
+  apply_source_panels(app, false);
+}
+
+void apply_source_panels(App& app, bool connected) {
+  for (const SourcePanelPage& p : app.source_panels) {
+    if (gtk_widget_get_sensitive(p.content) != (connected ? TRUE : FALSE)) {
+      gtk_widget_set_sensitive(p.content, connected);
+    }
+  }
+}
+
+void sync_source_panels(App& app) {
+  if (app.source_panels.empty() || app.model == nullptr) return;
+  apply_source_panels(app, app.model->stats().connected.load(std::memory_order_relaxed));
+}
+
+}  // namespace ui_impl
+}  // namespace udpscope