rbutil: add abort signal for bootloader install/uninstall

During the bootloader install/uninstall process, a signal
is emitted when "Abort" button is pressed, the installers
can attach this signal and cancel the process.

Change-Id: I7f297b8031d7a2d93da0022081aaef03ef041baf

rbutil/rbutilqt/base/bootloaderinstallbase.cpp

@@ -103,6 +103,13 @@ void BootloaderInstallBase::installBlfile(void)
 }
 
 
+void BootloaderInstallBase::progressAborted(void)
+{
+    LOG_INFO() << "progressAborted(void)";
+    emit installAborted();
+}
+
+
 //! @brief backup OF file.
 //! @param to folder to write backup file to. Folder will get created.
 //! @return true on success, false on error.

rbutil/rbutilqt/base/bootloaderinstallbase.h

@@ -73,6 +73,7 @@ class BootloaderInstallBase : public QObject
         void downloadReqFinished(int id, bool error);
         void downloadBlFinish(bool error);
         void installBlfile(void);
+        void progressAborted(void);
 
         // NOTE: we need to keep this slot even on targets that don't need it
         // -- using the preprocessor here confused moc.
@@ -101,6 +102,7 @@ class BootloaderInstallBase : public QObject
 
     signals:
         void downloadDone(void); //! internal signal sent when download finished.
+        void installAborted(void); //! internal signal sent on abort button click.
         void done(bool);
         void logItem(QString, int); //! set logger item
         void logProgress(int, int); //! set progress bar.

rbutil/rbutilqt/gui/selectiveinstallwidget.cpp

@@ -247,6 +247,8 @@ void SelectiveInstallWidget::installBootloader(void)
         connect(bl, SIGNAL(done(bool)), this, SLOT(continueInstall(bool)));
         connect(bl, SIGNAL(logItem(QString, int)), m_logger, SLOT(addItem(QString, int)));
         connect(bl, SIGNAL(logProgress(int, int)), m_logger, SLOT(setProgress(int, int)));
+        // pass Abort button click signal to current installer
+        connect(m_logger, SIGNAL(aborted()), bl, SLOT(progressAborted()));
 
         // set bootloader filename. Do this now as installed() needs it.
         QStringList blfile = SystemInfo::value(SystemInfo::CurBootloaderFile).toStringList();

rbutil/rbutilqt/rbutilqt.cpp

@@ -569,6 +569,8 @@ void RbUtilQt::uninstallBootloader(void)
     connect(bl, SIGNAL(logItem(QString, int)), logger, SLOT(addItem(QString, int)));
     connect(bl, SIGNAL(logProgress(int, int)), logger, SLOT(setProgress(int, int)));
     connect(bl, SIGNAL(done(bool)), logger, SLOT(setFinished()));
+    // pass Abort button click signal to current installer
+    connect(logger, SIGNAL(aborted()), bl, SLOT(progressAborted()));
 
     bl->uninstall();