Welcome: Start some performance improvements

This is essentially a widgets based re-implementation
of the current design. It is still using the QAIM based
interface layer between to the real data and display even
though this is not needed with this approach.
Removal of this layer would further reduce code size
and cycle counts.

For now:
               old          new
Load time    215ms        182ms
delete        22ms          2ms

Change-Id: I90d779a60a47a78399eaad0f1bc032d39f3ae3c0
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

1 files changed, 11 insertions, 20 deletions

diff --git a/src/plugins/qtsupport/gettingstartedwelcomepage.h b/src/plugins/qtsupport/gettingstartedwelcomepage.h
index 689e75fb4a9..8a78ceffe9d 100644
--- a/src/plugins/qtsupport/gettingstartedwelcomepage.h
+++ b/src/plugins/qtsupport/gettingstartedwelcomepage.h
@@ -30,7 +30,6 @@
 #include <QStringList>
 
 QT_BEGIN_NAMESPACE
-class QQmlEngine;
 class QFileInfo;
 QT_END_NAMESPACE
 
@@ -44,29 +43,21 @@ class ExamplesWelcomePage : public Core::IWelcomePage
     Q_OBJECT
 
 public:
-    ExamplesWelcomePage();
+    explicit ExamplesWelcomePage(bool showExamples);
 
-    void setShowExamples(bool showExamples);
-    QUrl pageLocation() const;
-    QString title() const;
-    int priority() const;
-    bool hasSearchBar() const;
-    void facilitateQml(QQmlEngine *);
-    Core::Id id() const;
-    Q_INVOKABLE void openUrl(const QUrl &url);
+    QString title() const final;
+    int priority() const final;
+    Core::Id id() const final;
+    QWidget *createWidget() const final;
 
-public slots:
-    void openHelpInExtraWindow(const QUrl &help);
-    void openHelp(const QUrl &help);
-    void openProject(const QString& projectFile, const QStringList& additionalFilesToOpen,
-                     const QString &mainFile, const QUrl& help, const QStringList &dependencies,
-                     const QStringList &platforms);
+    static void openHelpInExtraWindow(const QUrl &help);
+    static void openProject(const QString& projectFile, const QStringList& additionalFilesToOpen,
+                            const QString &mainFile, const QUrl &help,
+                            const QStringList &dependencies, const QStringList &platforms);
 
 private:
-    ExamplesListModel *examplesModel() const;
-    QString copyToAlternativeLocation(const QFileInfo &fileInfo, QStringList &filesToOpen, const QStringList &dependencies);
-    QQmlEngine *m_engine;
-    bool m_showExamples;
+    static QString copyToAlternativeLocation(const QFileInfo &fileInfo, QStringList &filesToOpen, const QStringList &dependencies);
+    const bool m_showExamples;
 };
 
 } // namespace Internal