gui: remove searchworker

gui/mainwindow.h

@@ -6,7 +6,8 @@
 #include <QTreeWidgetItem>
 #include <QFileIconProvider>
 #include <QKeyEvent>
-#include "searchworker.h"
+#include <QFutureWatcher>
+#include <QSqlDatabase>
 #include "pdfworker.h"
 namespace Ui
 {
@@ -28,7 +29,9 @@ class MainWindow : public QMainWindow
 	Ui::MainWindow *ui;
 	QFileIconProvider iconProvider;
 	bool pdfDirty;
-	SearchWorker *searchWorker;
+	QSqlDatabase db;
+	QFuture<QVector<SearchResult>> searchFuture;
+	QFutureWatcher<QVector<SearchResult>> searchWatcher;
 	PdfWorker *pdfWorker;
 	void add(QString path, unsigned int page);
 	QThread searchThread;