Label text stages in the chain list with their words

Effect::label(values) names a stage in a list, defaulting to the title;
the text effect answers "Text (words)", and the chain rows are renamed
in place as params change.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/gui/window.cpp

@@ -1313,6 +1313,7 @@ void EffectorWindow::rebuildChainRows() {
     // Only the rows: the placeholder is a child of the list box as well, and
     // removing it would leave the empty list blank.
     while (auto* row = chainList_.get_row_at_index(0)) chainList_.remove(*row);
+    stageLabels_.clear();
 
     // The first stage that actually runs is the one handed the sources, which
     // is not stage 1 once stage 1 is switched off.
@@ -1343,8 +1344,8 @@ void EffectorWindow::rebuildChainRows() {
         });
         box->append(*check);
 
-        auto* label = Gtk::make_managed<Gtk::Label>(std::to_string(index + 1) + ". " +
-                                                    stages_[i].effect->title());
+        auto* label = Gtk::make_managed<Gtk::Label>(stageLabel(i));
+        stageLabels_.push_back(label);
         label->set_xalign(0.0F);
         label->set_hexpand(true);
         label->set_ellipsize(Pango::EllipsizeMode::END);
@@ -1418,8 +1419,17 @@ void EffectorWindow::onStageSelected() {
 
 // ------------------------------------------------------------ rendering ---
 
+std::string EffectorWindow::stageLabel(std::size_t index) const {
+    const ChainStage& stage = stages_[index];
+    return std::to_string(index + 1) + ". " + stage.effect->label(stageValues(stage, styles_));
+}
+
 void EffectorWindow::onParamChanged() {
     storeParams();
+    // A param can be what names the stage (the words of a text stage), and a
+    // styled one can rename every stage sharing the style.
+    for (std::size_t i = 0; i < stageLabels_.size() && i < stages_.size(); ++i)
+        stageLabels_[i]->set_text(stageLabel(i));
     requestRender();
 }
 

src/gui/window.hpp

@@ -95,6 +95,7 @@ private:
     // The check on a chain row: the stage stays where it is, and is skipped.
     void setStageEnabled(int index, bool enabled);
     void rebuildChainRows();
+    std::string stageLabel(std::size_t index) const;
     void selectStage(int index);
     void onStageSelected();
     Gtk::Widget& buildMainMenu();     // the header menu: new, open, save project
@@ -145,6 +146,8 @@ private:
     StyleSet styles_;
     int selectedStage_ = 0;
     bool suspendStageSelect_ = false;  // guards the rebuild of the chain rows
+    // The name label of each chain row, renamed in place as params change.
+    std::vector<Gtk::Label*> stageLabels_;
     Image result_;
     std::uint64_t seed_ = 0;
     std::string projectPath_;  // empty until the project has been saved once