sfx2: remove the global SidebarController::maSidebarControllerContainer

This global was crashing on exit, unsurprising as it contains UNO
services that reference VCL objects.

It turns out that there is already a UNO singleton
framework::ContextChangeEventMultiplexer that effectively contains this
mapping already, so try to hook that up without creating a public API of
it, which is made quite a bit harder by framework's inexplicable
multitude of libraries.

Change-Id: I4baf67b42c630191fa8879d650eeb62520c331a5

3 files changed, 71 insertions, 1 deletions

diff --git a/framework/source/fwe/classes/sfxhelperfunctions.cxx b/framework/source/fwe/classes/sfxhelperfunctions.cxx
index a1f0826a23f8..c04105ce2f5d 100644
--- a/framework/source/fwe/classes/sfxhelperfunctions.cxx
+++ b/framework/source/fwe/classes/sfxhelperfunctions.cxx
@@ -18,6 +18,8 @@
  */
 
 #include <framework/sfxhelperfunctions.hxx>
+#include <framework/ContextChangeEventMultiplexerTunnel.hxx>
+#include <helper/mischelper.hxx>
 
 #include <tools/diagnose_ex.h>
 
@@ -163,6 +165,14 @@ void SAL_CALL ActivateToolPanel( const ::com::sun::star::uno::Reference< ::com::
     (*pActivator)( i_rFrame, i_rPanelURL );
 }
 
+using namespace ::com::sun::star;
+uno::Reference<ui::XContextChangeEventListener> GetFirstListenerWith(
+    uno::Reference<uno::XInterface> const& xEventFocus,
+    std::function<bool (uno::Reference<ui::XContextChangeEventListener> const&)> const& rPredicate)
+{
+    return GetFirstListenerWith_Impl(xEventFocus, rPredicate);
+}
+
 }
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/framework/source/fwi/helper/mischelper.cxx b/framework/source/fwi/helper/mischelper.cxx
index 5b1e15fa1e89..06cc06131f29 100644
--- a/framework/source/fwi/helper/mischelper.cxx
+++ b/framework/source/fwi/helper/mischelper.cxx
@@ -212,6 +212,21 @@ void FillLangItems( std::set< OUString > &rLangItems,
     }
 }
 
+auto (*g_pGetMultiplexerListener)(
+    uno::Reference<uno::XInterface> const&,
+    std::function<bool (uno::Reference<ui::XContextChangeEventListener> const&)> const&)
+    -> uno::Reference<ui::XContextChangeEventListener> = nullptr;
+
+uno::Reference<ui::XContextChangeEventListener>
+GetFirstListenerWith_Impl(
+    uno::Reference<uno::XInterface> const& xEventFocus,
+    std::function<bool (uno::Reference<ui::XContextChangeEventListener> const&)> const& rPredicate)
+{
+    assert(g_pGetMultiplexerListener != nullptr); // should not be called too early, nor too late
+    return g_pGetMultiplexerListener(xEventFocus, rPredicate);
+}
+
+
 } // namespace framework
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/framework/source/services/ContextChangeEventMultiplexer.cxx b/framework/source/services/ContextChangeEventMultiplexer.cxx
index 6fe88eeebd89..d672704c23c7 100644
--- a/framework/source/services/ContextChangeEventMultiplexer.cxx
+++ b/framework/source/services/ContextChangeEventMultiplexer.cxx
@@ -17,6 +17,8 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
+#include <helper/mischelper.hxx>
+
 #include <com/sun/star/lang/XComponent.hpp>
 #include <com/sun/star/lang/XEventListener.hpp>
 #include <com/sun/star/lang/XServiceInfo.hpp>
@@ -88,7 +90,6 @@ public:
         const css::lang::EventObject& rEvent)
         throw (cssu::RuntimeException, std::exception) SAL_OVERRIDE;
 
-private:
     typedef ::std::vector<cssu::Reference<css::ui::XContextChangeEventListener> > ListenerContainer;
     class FocusDescriptor
     {
@@ -362,6 +363,50 @@ struct Singleton:
 
 }
 
+namespace framework {
+
+// right now we assume there's one matching listener
+uno::Reference<ui::XContextChangeEventListener> GetFirstListenerWith_ImplImpl(
+    uno::Reference<uno::XInterface> const& xEventFocus,
+    std::function<bool (uno::Reference<ui::XContextChangeEventListener> const&)> const& rPredicate)
+{
+    assert(xEventFocus.is()); // in current usage it's a bug if the XController is null here
+    uno::Reference<ui::XContextChangeEventListener> xRet;
+
+    ContextChangeEventMultiplexer *const pMultiplexer(
+        dynamic_cast<ContextChangeEventMultiplexer *>(Singleton::get().instance.get()));
+    assert(pMultiplexer);
+
+    ContextChangeEventMultiplexer::FocusDescriptor const*const pFocusDescriptor(
+        pMultiplexer->GetFocusDescriptor(xEventFocus, false));
+    if (!pFocusDescriptor)
+        return xRet;
+
+    for (auto & xListener : pFocusDescriptor->maListeners)
+    {
+        if (rPredicate(xListener))
+        {
+            assert(!xRet.is()); // generalize this if it is used for more than 1:1 mapping?
+            xRet = xListener;
+        }
+    }
+    return xRet;
+}
+
+namespace {
+
+struct Hook
+{
+    Hook() { g_pGetMultiplexerListener = &GetFirstListenerWith_ImplImpl; }
+    ~Hook() { g_pGetMultiplexerListener = nullptr; }
+};
+
+static Hook g_hook;
+
+}
+
+}
+
 extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface * SAL_CALL
 org_apache_openoffice_comp_framework_ContextChangeEventMultiplexer_get_implementation(
     css::uno::XComponentContext *,