SwXAutoTextEntry needs a disposal protocol

SwXAutoTextEntry::GetBodyText calls SwGlossaries::EditGroupDoc to create a
Sw[Web]GlosDocShell (which it then stores in xDocSh), and there must be a call
to that shell's DoClose to clean up its resources.  However, if a reference to
the SwXAutoTextEntry is still held during XDesktop::terminate (as can happen in
JunitTest_sw_unoapi_1, where such a reference is held from Java, thus
arbitrarily delaying destruction of the SwXAutoTextEntry until the JVM does GC),
SwXAutoTextEntry::Notify's PrepareCloseDoc case will release xDocSh without
calling DoClose, so an eventual ~SwXAutoTextEntry will not call DoClose either.
(And calling DoClose from withing SwXAutoTextEntry::Notify would cause a crash,
as it would destroy the SwGlosDocShell recursively from within its
SfxBroadcaster::Broadcast call.)

So introduce a disposal protocol for XAutoTextEntry and call it at least in the
place that caused the resource leak in JunitTest_sw_unoapi_1.  For lack of a
better inerface, reuse css.lang.XComponent for that protocol, even though this
scenario doesn't involve breaking cyclic references among UNO objects caused by
listener patterns.

Change-Id: Id6501b84e562950e40b83e0b1afd1b3184807856

2 files changed, 13 insertions, 1 deletions

diff --git a/sw/source/uibase/inc/unoatxt.hxx b/sw/source/uibase/inc/unoatxt.hxx
index 02e49d010321..a991b1d7e0f0 100644
--- a/sw/source/uibase/inc/unoatxt.hxx
+++ b/sw/source/uibase/inc/unoatxt.hxx
@@ -31,6 +31,8 @@
 #include <com/sun/star/text/XText.hpp>
 #include <svl/itemprop.hxx>
 #include <svl/lstner.hxx>
+#include <cppuhelper/basemutex.hxx>
+#include <cppuhelper/compbase.hxx>
 #include <cppuhelper/implbase.hxx>
 #include <svtools/unoevent.hxx>
 class SwTextBlocks;
@@ -155,7 +157,8 @@ public:
 
 class SwXAutoTextEntry
         :public SfxListener
-        ,public cppu::WeakImplHelper
+        ,public cppu::BaseMutex
+        ,public cppu::WeakComponentImplHelper
         <
             css::text::XAutoTextEntry,
             css::lang::XServiceInfo,
@@ -178,6 +181,8 @@ class SwXAutoTextEntry
     }
     void GetBodyText ();
 
+    void SAL_CALL disposing() override;
+
 protected:
     /** ensure that the current content (which may only be in-memory so far) is flushed to the auto text group file
 
diff --git a/sw/source/uibase/uno/unoatxt.cxx b/sw/source/uibase/uno/unoatxt.cxx
index f984a3e65428..ef41ed8649aa 100644
--- a/sw/source/uibase/uno/unoatxt.cxx
+++ b/sw/source/uibase/uno/unoatxt.cxx
@@ -718,6 +718,7 @@ sal_Int64 SAL_CALL SwXAutoTextEntry::getSomething( const uno::Sequence< sal_Int8
 
 SwXAutoTextEntry::SwXAutoTextEntry(SwGlossaries* pGlss, const OUString& rGroupName,
                                             const OUString& rEntryName) :
+    WeakComponentImplHelper(m_aMutex),
     pGlossaries(pGlss),
     sGroupName(rGroupName),
     sEntryName(rEntryName),
@@ -801,6 +802,12 @@ void SwXAutoTextEntry::GetBodyText ()
     xBodyText.set( *pBodyText, uno::UNO_QUERY);
 }
 
+void SwXAutoTextEntry::disposing()
+{
+    SolarMutexGuard g;
+    implFlushDocument(true);
+}
+
 uno::Reference< text::XTextCursor >  SwXAutoTextEntry::createTextCursor() throw( uno::RuntimeException, std::exception )
 {
     SolarMutexGuard aGuard;