IFeatureProvider: Add register method for IFeatureProviders to IWizardFactory

and avoid putting those objects into the object pool.

Change-Id: I46c5ed93a9e80532b3cbd7dba2e52b28b1595aa3
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>

src/plugins/coreplugin/coreplugin.cpp

@@ -35,6 +35,7 @@
 #include "mimedatabase.h"
 #include "modemanager.h"
 #include "infobar.h"
+#include "iwizardfactory.h"
 
 #include <coreplugin/actionmanager/actionmanager.h>
 #include <coreplugin/editormanager/editormanager.h>
@@ -60,6 +61,8 @@ CorePlugin::CorePlugin() : m_editMode(0), m_designMode(0)
 
 CorePlugin::~CorePlugin()
 {
+    IWizardFactory::destroyFeatureProvider();
+
     delete m_findPlugin;
     delete m_locator;
 

src/plugins/coreplugin/featureprovider.h

@@ -42,10 +42,8 @@ namespace Core {
 
 class CORE_EXPORT FeatureSet;
 
-class CORE_EXPORT IFeatureProvider : public QObject
+class CORE_EXPORT IFeatureProvider
 {
-    Q_OBJECT
-
 public:
     IFeatureProvider() {}
     virtual ~IFeatureProvider() {}

src/plugins/coreplugin/iwizardfactory.cpp

@@ -35,6 +35,7 @@
 #include <extensionsystem/pluginmanager.h>
 
 #include <utils/algorithm.h>
+#include <utils/qtcassert.h>
 
 #include <QStringList>
 
@@ -145,6 +146,10 @@
 
 using namespace Core;
 
+namespace {
+static QList<IFeatureProvider *> s_providerList;
+}
+
 /* A utility to find all wizards supporting a view mode and matching a predicate */
 template <class Predicate>
     QList<IWizardFactory*> findWizardFactories(Predicate predicate)
@@ -201,10 +206,7 @@ bool IWizardFactory::isAvailable(const QString &platformName) const
     foreach (const QString &n, plugins)
         availableFeatures |= Feature(Core::Id::fromString(n));
 
-    const QList<Core::IFeatureProvider *> featureManagers
-            = ExtensionSystem::PluginManager::getObjects<Core::IFeatureProvider>();
-
-    foreach (const Core::IFeatureProvider *featureManager, featureManagers)
+    foreach (const Core::IFeatureProvider *featureManager, s_providerList)
         availableFeatures |= featureManager->availableFeatures(platformName);
 
     return availableFeatures.contains(requiredFeatures());
@@ -226,10 +228,7 @@ QStringList IWizardFactory::allAvailablePlatforms()
 {
     QStringList platforms;
 
-    const QList<Core::IFeatureProvider*> featureManagers =
-            ExtensionSystem::PluginManager::getObjects<Core::IFeatureProvider>();
-
-    foreach (const Core::IFeatureProvider *featureManager, featureManagers)
+    foreach (const Core::IFeatureProvider *featureManager, s_providerList)
         platforms.append(featureManager->availablePlatforms());
 
     return platforms;
@@ -237,13 +236,22 @@ QStringList IWizardFactory::allAvailablePlatforms()
 
 QString IWizardFactory::displayNameForPlatform(const QString &string)
 {
-    const QList<Core::IFeatureProvider*> featureManagers =
-            ExtensionSystem::PluginManager::getObjects<Core::IFeatureProvider>();
-
-    foreach (const Core::IFeatureProvider *featureManager, featureManagers) {
+    foreach (const Core::IFeatureProvider *featureManager, s_providerList) {
         QString displayName = featureManager->displayNameForPlatform(string);
         if (!displayName.isEmpty())
             return displayName;
     }
     return QString();
 }
+
+void IWizardFactory::registerFeatureProvider(IFeatureProvider *provider)
+{
+    QTC_ASSERT(!s_providerList.contains(provider), return);
+    s_providerList.append(provider);
+}
+
+void IWizardFactory::destroyFeatureProvider()
+{
+    qDeleteAll(s_providerList);
+    s_providerList.clear();
+}

src/plugins/coreplugin/iwizardfactory.h

@@ -40,6 +40,8 @@
 
 namespace Core {
 
+namespace Internal { class CorePlugin; }
+
 class CORE_EXPORT IWizardFactory
     : public QObject
 {
@@ -94,7 +96,11 @@ public:
     static QStringList allAvailablePlatforms();
     static QString displayNameForPlatform(const QString &string);
 
+    static void registerFeatureProvider(IFeatureProvider *provider);
+
 private:
+    static void destroyFeatureProvider();
+
     IWizardFactory::WizardKind m_kind;
     QIcon m_icon;
     QString m_description;
@@ -105,6 +111,8 @@ private:
     FeatureSet m_requiredFeatures;
     WizardFlags m_flags;
     QString m_descriptionImage;
+
+    friend class Internal::CorePlugin;
 };
 
 } // namespace Core