Added icon to advanced view widget

plugins/advancedviewplugin/advancedviewwidget.cpp

@@ -1,10 +1,20 @@
 #include "advancedviewwidget.h"
 
-#include "mainwindow.h"
+#include <QIcon>
 
-AdvancedViewWidget::AdvancedViewWidget(MainWindow &mainWindow) :
-    QToolButton(&mainWindow),
-    m_mainWindow(mainWindow)
+#include "stripswidget.h"
+
+AdvancedViewWidget::AdvancedViewWidget(StripsWidget &stripsWidget) :
+    QToolButton(&stripsWidget),
+    m_stripsWidget(stripsWidget)
 {
-    setText(tr("X"));
+    setIcon(QIcon(QStringLiteral(":/zeiterfassunglib/plugins/advancedviewplugin/images/advanced-view.png")));
+    setText(tr("Advanced view"));
+    connect(&stripsWidget, &StripsWidget::dateChanged, this, &AdvancedViewWidget::dateChanged);
+    dateChanged(stripsWidget.date());
+}
+
+void AdvancedViewWidget::dateChanged(const QDate &date)
+{
+    setEnabled(date.isValid());
 }