Attempt to fix a race condition and subsequent crash

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdeaddons@1144369 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

konq-plugins/dirfilter/dirfilterplugin.cpp

@@ -195,23 +195,43 @@ DirFilterPlugin::DirFilterPlugin (QObject* parent, const char* name,
   {
     QWhatsThis::add(m_searchWidget, i18n("Enter here a text which an item in the view must contain anywhere to be shown."));
     connect(clear, SIGNAL(activated()), m_searchWidget, SLOT(clear()));
+    connect(m_searchWidget, SIGNAL(textChanged(const QString&)), this, SLOT(searchTextChanged(const QString&)));
   }
 
   KWidgetAction *filterAction = new KWidgetAction(hbox, i18n("Filter Field"),
                                                   0, 0, 0, actionCollection(), "toolbar_filter_field");
   filterAction->setShortcutConfigurable(false);
 
+// FIXME: This causes crashes for an unknown reason on certain systems
+// Probably the iconview onchange event handler should tempoarily stop this timer before doing anything else
+// Really the broken Qt3 iconview should just be modified to include a hidden list; it would make things *so* much easier!
   m_refreshTimer = new QTimer( this );
+  m_reactivateRefreshTimer = new QTimer( this );
   connect( m_refreshTimer, SIGNAL(timeout()), this, SLOT(activateSearch()) );
   m_refreshTimer->start( 200, FALSE ); // 200 millisecond continuous timer
+  connect( m_reactivateRefreshTimer, SIGNAL(timeout()), this, SLOT(reactivateRefreshTimer()) );
 
 }
 
 DirFilterPlugin::~DirFilterPlugin()
 {
+  m_reactivateRefreshTimer->stop();
   m_refreshTimer->stop();
   delete m_pFilterMenu;
   delete m_refreshTimer;
+  delete m_reactivateRefreshTimer;
+}
+
+void DirFilterPlugin::searchTextChanged(const QString& newtext)
+{
+  m_refreshTimer->stop();
+  m_reactivateRefreshTimer->stop();
+  m_reactivateRefreshTimer->start( 1000, TRUE );
+}
+
+void DirFilterPlugin::reactivateRefreshTimer()
+{
+  m_refreshTimer->start( 200, FALSE ); // 200 millisecond continuous time
 }
 
 void DirFilterPlugin::slotOpenURL ()
@@ -474,6 +494,10 @@ void DirFilterPlugin::slotItemRemoved (const KFileItem* item)
 
 void DirFilterPlugin::activateSearch()
 {
+	// FIXME: If any of the files change while they are hidden in iconview mode, they will
+	// reappear under the wrong (old) name.  This routine was originally intended to fix that
+	// problem, but will need to be able to detect when a change has occurred to be effective.
+
 	if (!m_searchWidget)
 		return;
 

konq-plugins/dirfilter/dirfilterplugin.h

@@ -121,11 +121,14 @@ private slots:
   void slotItemRemoved(const KFileItem *);
   void slotItemsAdded(const KFileItemList &);
   void activateSearch();
+  void searchTextChanged(const QString& newtext);
+  void reactivateRefreshTimer();
 
 private:
   KURL m_pURL;
   KonqDirPart* m_part;
   QTimer *m_refreshTimer;
+  QTimer *m_reactivateRefreshTimer;
   KActionMenu* m_pFilterMenu;
   QString m_oldFilterString;