ProjectExplorer: Start transferring RunWorkerFactory ownership

... to the plugins providing them.

To allow this being done one-by-one in the plugins, allow both
central and per-plugin ownership, and clean up the central instances
centrally. This step will be removed again once the transition
is complete.

Change-Id: Ica7786012e05ab83a0784448f2f8b3b781fe2167
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/projectexplorer/projectexplorer.cpp

@@ -524,6 +524,8 @@ ProjectExplorerPlugin::~ProjectExplorerPlugin()
     delete dd->m_toolChainManager;
     ProjectPanelFactory::destroyFactories();
     delete dd;
+
+    RunWorkerFactory::destroyRemainingRunWorkerFactories();
 }
 
 ProjectExplorerPlugin *ProjectExplorerPlugin::instance()

src/plugins/projectexplorer/runconfiguration.cpp

@@ -683,17 +683,18 @@ FixedRunConfigurationFactory::availableCreators(Target *parent) const
 
 // RunWorkerFactory
 
-using RunWorkerFactories = std::vector<RunWorkerFactory>;
-
-static RunWorkerFactories &theWorkerFactories()
-{
-    static RunWorkerFactories factories;
-    return factories;
-}
+static QList<RunWorkerFactory *> g_runWorkerFactories;
 
 RunWorkerFactory::RunWorkerFactory(Core::Id mode, Constraint constr, const WorkerCreator &prod, int prio)
     : m_runMode(mode), m_constraint(constr), m_producer(prod), m_priority(prio)
-{}
+{
+    g_runWorkerFactories.append(this);
+}
+
+RunWorkerFactory::~RunWorkerFactory()
+{
+    g_runWorkerFactories.removeOne(this);
+}
 
 bool RunWorkerFactory::canRun(RunConfiguration *runConfiguration, Core::Id runMode) const
 {
@@ -704,7 +705,10 @@ bool RunWorkerFactory::canRun(RunConfiguration *runConfiguration, Core::Id runMo
     return m_constraint(runConfiguration);
 }
 
-
+void RunWorkerFactory::destroyRemainingRunWorkerFactories()
+{
+    qDeleteAll(g_runWorkerFactories);
+}
 
 /*!
     \class ProjectExplorer::RunControl
@@ -1003,7 +1007,7 @@ RunWorker *RunControl::createWorker(Core::Id id)
 RunWorkerFactory::WorkerCreator RunControl::producer(RunConfiguration *runConfig, Core::Id runMode)
 {
     const auto canRun = std::bind(&RunWorkerFactory::canRun, std::placeholders::_1, runConfig, runMode);
-    const RunWorkerFactories candidates = Utils::filtered(theWorkerFactories(), canRun);
+    const QList<RunWorkerFactory *> candidates = Utils::filtered(g_runWorkerFactories, canRun);
 
     if (candidates.empty())
         return {};
@@ -1013,12 +1017,7 @@ RunWorkerFactory::WorkerCreator RunControl::producer(RunConfiguration *runConfig
                                           std::bind(&RunWorkerFactory::priority, std::placeholders::_2));
     const auto bestFactory = std::max_element(candidates.begin(), candidates.end(), higherPriority);
 
-    return bestFactory->producer();
-}
-
-void RunControl::addWorkerFactory(const RunWorkerFactory &workerFactory)
-{
-    theWorkerFactories().push_back(workerFactory);
+    return (*bestFactory)->producer();
 }
 
 void RunControlPrivate::initiateStart()

src/plugins/projectexplorer/runconfiguration.h

@@ -456,12 +456,19 @@ public:
     RunWorkerFactory(Core::Id mode, Constraint constr, const WorkerCreator &prod,
                      int prio = 0);
 
+    virtual ~RunWorkerFactory();
+
     bool canRun(RunConfiguration *runConfiguration, Core::Id m_runMode) const;
 
     int priority() const { return m_priority; }
     WorkerCreator producer() const { return m_producer; }
 
 private:
+    // FIXME: That's temporary until ownership has been transferred to
+    // the individual plugins.
+    friend class ProjectExplorerPlugin;
+    static void destroyRemainingRunWorkerFactories();
+
     Core::Id m_runMode;
     Constraint m_constraint;
     WorkerCreator m_producer;
@@ -539,20 +546,20 @@ public:
     static void registerWorker(Core::Id runMode, const WorkerCreator &producer,
                                const Constraint &constraint = {})
     {
-        addWorkerFactory({runMode, constraint, producer});
+        (void) new RunWorkerFactory(runMode, constraint, producer);
     }
     template <class Worker>
     static void registerWorker(Core::Id runMode, const Constraint &constraint, int priority = 0)
     {
         auto producer = [](RunControl *rc) { return new Worker(rc); };
-        addWorkerFactory({runMode, constraint, producer, priority});
+        (void) new RunWorkerFactory(runMode, constraint, producer, priority);
     }
     template <class Config, class Worker>
     static void registerWorker(Core::Id runMode, int priority = 0)
     {
         auto constraint = [](RunConfiguration *runConfig) { return qobject_cast<Config *>(runConfig) != nullptr; };
         auto producer = [](RunControl *rc) { return new Worker(rc); };
-        addWorkerFactory({runMode, constraint, producer, priority});
+        (void) new RunWorkerFactory(runMode, constraint, producer, priority);
     }
 
     static WorkerCreator producer(RunConfiguration *runConfiguration, Core::Id runMode);
@@ -570,7 +577,6 @@ private:
     friend class RunWorker;
     friend class Internal::RunWorkerPrivate;
 
-    static void addWorkerFactory(const RunWorkerFactory &workerFactory);
     Internal::RunControlPrivate *d;
 };