Erste lauffähige Version

src/tagwidget.cpp

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+#include "tagwidget.h"
+
+TagWidget::TagWidget(QWidget *parent)
+    : QWidget(parent)
+{
+    auto *outerLayout = new QVBoxLayout(this);
+    outerLayout->setContentsMargins(4, 4, 4, 4);
+    outerLayout->setSpacing(4);
+
+    // Header row
+    auto *headerLayout = new QHBoxLayout();
+    auto *titleLabel = new QLabel(tr("<b>Tag Monitor</b>"), this);
+    auto *clearBtn = new QPushButton(tr("Clear all"), this);
+    clearBtn->setMaximumWidth(80);
+    connect(clearBtn, &QPushButton::clicked, this, &TagWidget::clearAll);
+    headerLayout->addWidget(titleLabel);
+    headerLayout->addStretch();
+    headerLayout->addWidget(clearBtn);
+    outerLayout->addLayout(headerLayout);
+
+    // Scrollable panel area
+    auto *scrollArea = new QScrollArea(this);
+    scrollArea->setWidgetResizable(true);
+    scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
+    auto *container = new QWidget(scrollArea);
+    m_panelLayout = new QVBoxLayout(container);
+    m_panelLayout->setContentsMargins(0, 0, 0, 0);
+    m_panelLayout->setSpacing(6);
+    m_panelLayout->addStretch();  // pushes panels to the top
+    scrollArea->setWidget(container);
+    outerLayout->addWidget(scrollArea, 1);
+}
+
+void TagWidget::handleTag(const QString &tag, const QString &value)
+{
+    if (!m_panels.contains(tag)) {
+        auto *panel = new TagPanel(tag, this);
+        m_panels.insert(tag, panel);
+        // Insert before the stretch at the end
+        m_panelLayout->insertWidget(m_panelLayout->count() - 1, panel);
+    }
+    m_panels[tag]->update(value);
+}
+
+void TagWidget::clearAll()
+{
+    for (auto *p : m_panels)
+        p->deleteLater();
+    m_panels.clear();
+}
+
+void TagWidget::removeTag(const QString &tag)
+{
+    if (auto *p = m_panels.take(tag)) {
+        m_panelLayout->removeWidget(p);
+        p->deleteLater();
+    }
+}