Qt Plugin: Add quit() signal.

Author: antony-jr

docs/ClassQAppImageUpdate.md

@@ -58,6 +58,7 @@ All methods in this class is [reentrant](https://doc.qt.io/qt-5/threads-reentran
 | void | [error(short, short)](#void-errorshort-errorcode-short-action) |
 | void | [progress(int, qint64, qint64, double, QString, short)](#void-progressint-percentage--qint64-bytesreceived--qint64-bytestotal--double-speed--qstring-speedunits-short-action) |
 | void | [logger(QString, QString)](#void-loggerqstring--qstring) |
+| void | [quit()](#void-quit) 					  |
 
 
 ## Static Public Members
@@ -392,6 +393,12 @@ Emitted when the updater issues a log message with the *first QString* as the lo
 the *second QString* as the path to the respective AppImage.
 
 
+### void quit()
+<p align="right"> <code>[SIGNAL]</code> </p>
+
+Emitted when it's required quit the current application when using the GUI updater.
+
+
 ## QString errorCodeToString(short errorCode)
 <p align="right"> <code>[STATIC]</code> </p>
 

docs/PluginInterface.md

@@ -52,7 +52,7 @@ I'm not sure about other Qt bindings, So help is much welcomed.
 | [error(short, short)](#errorshort-errorcode-short-action) | Emitted when some error occurs in an action. |
 | [progress(int, qint64, qint64, double, QString, short)](#progressint-percentage--qint64-bytesreceived--qint64-bytestotal--double-speed--qstring-speedunits-short-action) | Emitted on progress of a action. |
 | [logger(QString, QString)](#loggerqstring--qstring) | See here for more information. |
-
+| [quit()](#quit) 		    | Emitted when it's desired to quit current application. |
 
 ## Actions
 
@@ -341,6 +341,12 @@ The updater's progress is emitted through this unified signal.
 Emitted when the updater issues a log message with the *first QString* as the log message and
 the *second QString* as the path to the respective AppImage.
 
+### quit()
+<p align="right"> <code>[SIGNAL]</code> </p>
+
+Emitted when it's desired to quit the current application when using GUI update.
+
+
 ### QObject\* getObject()
 
 Returns the QObject pointer. Useful when using this plugin in C++.

include/qappimageupdateinterface.hpp

@@ -34,6 +34,7 @@ class QAppImageUpdateInterface {
     virtual void progress(int, qint64, qint64, double, QString, short) = 0;
     virtual void logger(QString, QString) = 0;
     virtual void error(short, short) = 0;
+    virtual void quit() = 0;
 };
 
 #ifndef QAppImageUpdateInterface_iid

include/qappimageupdateinterfaceimpl.hpp

@@ -46,6 +46,7 @@ class QAppImageUpdateInterfaceImpl : public QObject, QAppImageUpdateInterface {
     void progress(int, qint64, qint64, double, QString, short);
     void logger(QString, QString);
     void error(short, short);
+    void quit();
   private:
     QScopedPointer<QAppImageUpdate> m_Private;
 };

src/qappimageupdateinterfaceimpl.cc

@@ -25,6 +25,8 @@ QAppImageUpdateInterfaceImpl::QAppImageUpdateInterfaceImpl(QObject *parent)
             this, &QAppImageUpdateInterfaceImpl::logger, Qt::DirectConnection);
     connect(s, &QAppImageUpdate::error,
             this, &QAppImageUpdateInterfaceImpl::error, Qt::DirectConnection);
+    connect(s, &QAppImageUpdate::quit,
+            this, &QAppImageUpdateInterfaceImpl::quit, Qt::DirectConnection);
 }
 
 QAppImageUpdateInterfaceImpl::~QAppImageUpdateInterfaceImpl() {