StudioWelcome: Disable welcome page during download

Change-Id: Ic85dfd79e4c43822805ce2a7f392f9b0a5d2a923
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

src/plugins/studiowelcome/examplecheckout.cpp

@@ -456,21 +456,28 @@ DataModelDownloader::DataModelDownloader(QObject * /* parent */)
             &FileDownloader::progressChanged,
             this,
             &DataModelDownloader::progressChanged);
+
+    connect(&m_fileDownloader,
+            &FileDownloader::downloadFailed,
+            this,
+            &DataModelDownloader::downloadFailed);
 }
 
-void DataModelDownloader::start()
+bool DataModelDownloader::start()
 {
 
     if (!enableDownload()) {
         m_available = false;
         emit availableChanged();
-        return;
+        return false;
     }
 
     m_fileDownloader.setUrl(QUrl::fromUserInput(
         "https://download.qt.io/learning/examples/qtdesignstudio/dataImports.zip"));
 
-    connect(&m_fileDownloader, &FileDownloader::availableChanged, this, [this]() {
+    bool started = false;
+
+    connect(&m_fileDownloader, &FileDownloader::availableChanged, this, [this, &started]() {
 
         m_available = m_fileDownloader.available();
 
@@ -484,6 +491,8 @@ void DataModelDownloader::start()
         if (!m_forceDownload && (m_fileDownloader.lastModified() <= m_birthTime))
             return;
 
+        started = true;
+
         m_fileDownloader.start();
         connect(&m_fileDownloader, &FileDownloader::finishedChanged, this, [this]() {
             if (m_fileDownloader.finished()) {
@@ -501,6 +510,7 @@ void DataModelDownloader::start()
             }
         });
     });
+    return started;
 }
 
 bool DataModelDownloader::exists() const

src/plugins/studiowelcome/examplecheckout.h

@@ -163,7 +163,7 @@ class DataModelDownloader : public QObject
 
 public:
     explicit DataModelDownloader(QObject *parent = nullptr);
-    void start();
+    bool start();
     bool exists() const;
     bool available() const;
     Utils::FilePath targetFolder() const;
@@ -174,6 +174,7 @@ signals:
     void finished();
     void availableChanged();
     void progressChanged();
+    void downloadFailed();
 
 private:
     FileDownloader m_fileDownloader;

src/plugins/studiowelcome/studiowelcomeplugin.cpp

@@ -656,9 +656,16 @@ WelcomeMode::WelcomeMode()
         m_modeWidget->engine()->clearComponentCache();
         m_modeWidget->setSource(source);
         m_modeWidget->rootObject()->setProperty("loadingProgress", 100);
+        m_modeWidget->setEnabled(true);
     });
 
-    m_dataModelDownloader->start();
+    connect(m_dataModelDownloader, &DataModelDownloader::downloadFailed, this, [this]() {
+        m_modeWidget->setEnabled(true);
+    });
+
+
+    if (m_dataModelDownloader->start())
+        m_modeWidget->setEnabled(false);
 
 /*
     connect(Core::ModeManager::instance(), &Core::ModeManager::currentModeChanged, this, [this](Utils::Id mode){