frontend-tools: Add "Clear" button to script log window

UI/frontend-plugins/frontend-tools/scripts.cpp

@@ -4,8 +4,10 @@
 
 #include <QFileDialog>
 #include <QPlainTextEdit>
+#include <QHBoxLayout>
 #include <QVBoxLayout>
 #include <QScrollBar>
+#include <QPushButton>
 #include <QFontDatabase>
 #include <QFont>
 #include <QDialogButtonBox>
@@ -87,13 +89,21 @@ ScriptLogWindow::ScriptLogWindow() : QWidget(nullptr)
 	edit->setFont(fixedFont);
 	edit->setWordWrapMode(QTextOption::NoWrap);
 
-	QDialogButtonBox *buttonBox = new QDialogButtonBox(
-			QDialogButtonBox::Close);
-	connect(buttonBox, &QDialogButtonBox::rejected, this, &QWidget::hide);
+	QHBoxLayout *buttonLayout = new QHBoxLayout();
+	QPushButton *clearButton = new QPushButton(tr("Clear"));
+	connect(clearButton, &QPushButton::clicked,
+			this, &ScriptLogWindow::ClearWindow);
+	QPushButton *closeButton = new QPushButton(tr("Close"));
+	connect(closeButton, &QPushButton::clicked,
+			this, &QDialog::hide);
+
+	buttonLayout->addStretch();
+	buttonLayout->addWidget(clearButton);
+	buttonLayout->addWidget(closeButton);
 
 	QVBoxLayout *layout = new QVBoxLayout();
 	layout->addWidget(edit);
-	layout->addWidget(buttonBox);
+	layout->addLayout(buttonLayout);
 
 	setLayout(layout);
 	scriptLogWidget = edit;
@@ -156,6 +166,12 @@ void ScriptLogWindow::AddLogMsg(int log_level, QString msg)
 	}
 }
 
+void ScriptLogWindow::ClearWindow()
+{
+	Clear();
+	scriptLogWidget->setPlainText(QString());
+}
+
 void ScriptLogWindow::Clear()
 {
 	lines.clear();

UI/frontend-plugins/frontend-tools/scripts.hpp

@@ -17,6 +17,7 @@ public:
 
 public slots:
 	void AddLogMsg(int log_level, QString msg);
+	void ClearWindow();
 	void Clear();
 	void ScrollChanged(int val);
 };