Add a method to ExtractDelegate for querying if the extraction has been cancelled.

YACReaderLibrary/empty_container_info.h

@@ -0,0 +1,26 @@
+#ifndef EMPTY_CONTAINER_INFO_H
+#define EMPTY_CONTAINER_INFO_H
+
+#include <QtWidgets>
+
+class EmptyContainerInfo : public QWidget
+{
+    Q_OBJECT
+public:
+    explicit EmptyContainerInfo(QWidget *parent = 0);
+    void setPixmap(const QPixmap & pixmap);
+    void setText(const QString & text);
+    QVBoxLayout *setUpDefaultLayout(bool addStretch);
+signals:
+
+public slots:
+
+protected:
+    void paintEvent(QPaintEvent *);
+
+    QLabel * iconLabel;
+    QLabel * titleLabel;
+    QString backgroundColor;
+};
+
+#endif // EMPTY_CONTAINER_INFO_H