Show hostname in sidebar

sharing/linux/app/Sidebar.qml

@@ -32,7 +32,7 @@ Rectangle {
                 }
 
                 Text {
-                    text: "lasans-laptop"
+                    text: backend.hostname
                     font.weight: 500
                     font.pointSize: 17
                     horizontalAlignment: Text.AlignHCenter

sharing/linux/app/backend.cc

@@ -11,6 +11,7 @@
 #include <QDebug>
 #include <QMetaObject>
 #include <QPointer>
+#include <QSysInfo>
 #include <QUrl>
 
 #include "absl/time/time.h"
@@ -388,6 +389,10 @@ Backend::~Backend() {
   shutdown();
 }
 
+QString Backend::hostname() const {
+  return QSysInfo::machineHostName();
+}
+
 void Backend::startReceive() {
   SetDesiredMode(Mode::kReceive);
 }

sharing/linux/app/backend.h

@@ -106,6 +106,7 @@ class Backend : public QObject,
                 public nearby::sharing::ShareTargetDiscoveredCallback {
   Q_OBJECT
   QML_ELEMENT
+  Q_PROPERTY(QString hostname READ hostname CONSTANT)
   Q_PROPERTY(QAbstractListModel* targets READ targets CONSTANT)
   Q_PROPERTY(QAbstractListModel* transfers READ transfers CONSTANT)
 
@@ -113,6 +114,7 @@ class Backend : public QObject,
   explicit Backend(QObject* parent = nullptr);
   ~Backend() override;
 
+  QString hostname() const;
   QAbstractListModel* targets() { return &targets_; }
   QAbstractListModel* transfers() { return &transfers_; }