From 4b8a300b162ace3a2a5d7d24fa19874a9bf37647 Mon Sep 17 00:00:00 2001
From: vsr <vsr@opencascade.com>
Date: Thu, 17 Jul 2008 09:39:01 +0000
Subject: [PATCH] Add clear() method and max history count property

---
 src/Qtx/QtxMRUAction.cxx | 54 +++++++++++++++++++++++++++++++++++++---
 src/Qtx/QtxMRUAction.h   |  7 ++++++
 2 files changed, 57 insertions(+), 4 deletions(-)

diff --git a/src/Qtx/QtxMRUAction.cxx b/src/Qtx/QtxMRUAction.cxx
index c3767ca5f..8df4dd128 100755
--- a/src/Qtx/QtxMRUAction.cxx
+++ b/src/Qtx/QtxMRUAction.cxx
@@ -38,6 +38,7 @@
 QtxMRUAction::QtxMRUAction( QObject* parent )
 : QtxAction( "Most Recently Used", "Most Recently Used", 0, parent ),
   myVisCount( 5 ),
+  myHistoryCount( -1 ),
   myLinkType( LinkAuto ),
   myInsertMode( MoveFirst )
 {
@@ -54,6 +55,7 @@ QtxMRUAction::QtxMRUAction( QObject* parent )
 QtxMRUAction::QtxMRUAction( const QString& text, const QString& menuText, QObject* parent )
 : QtxAction( text, menuText, 0, parent ),
   myVisCount( 5 ),
+  myHistoryCount( -1 ),
   myLinkType( LinkAuto ),
   myInsertMode( MoveFirst )
 {
@@ -72,6 +74,7 @@ QtxMRUAction::QtxMRUAction( const QString& text, const QIcon& icon,
                             const QString& menuText, QObject* parent )
 : QtxAction( text, icon, menuText, 0, parent ),
   myVisCount( 5 ),
+  myHistoryCount( -1 ),
   myLinkType( LinkAuto ),
   myInsertMode( MoveFirst )
 {
@@ -169,6 +172,32 @@ void QtxMRUAction::setVisibleCount( int num )
   myVisCount = num;
 }
 
+/*!
+  \brief Get number of totally stored MRU items.
+  \return number of MRU items stored in the preferences
+  \sa setHistoryCount(), saveLinks(), loadLinks()
+*/
+int QtxMRUAction::historyCount() const
+{
+  return myHistoryCount;
+}
+
+/*!
+  \brief Set number of totally stored MRU items.
+
+  This option allows setting number of MRU items to be stored
+  in the preferences file.
+
+  If \a num < 0, then number of stored MRU items is not limited.
+
+  \return number of MRU items stored in the preferences
+  \sa historyCount(), saveLinks(), loadLinks()
+*/
+void QtxMRUAction::setHistoryCount( const int num )
+{
+  myHistoryCount = num;
+}
+
 /*!
   \brief Insert MRU item.
 
@@ -223,6 +252,14 @@ void QtxMRUAction::remove( const QString& link )
   myLinks.removeAll( link );
 }
 
+/*!
+  \brief Remove all MRU items.
+*/
+void QtxMRUAction::clear()
+{
+  myLinks.clear();
+}
+
 /*!
   \brief Get MRU item
   \param idx MRU item index
@@ -302,8 +339,16 @@ void QtxMRUAction::saveLinks( QtxResourceMgr* resMgr, const QString& section, co
   if ( !resMgr || section.isEmpty() )
     return;
 
-  if ( clear )
-    resMgr->remove( section );
+  QString itemPrefix( "item_" );
+
+  if ( clear ) {
+    QStringList items = resMgr->parameters( section );
+    for ( QStringList::const_iterator it = items.begin(); it != items.end(); ++it )
+    {
+      if ( (*it).startsWith( itemPrefix ) )
+	resMgr->remove( section, *it );
+    }
+  }
 
   QStringList lst;
   QMap<QString, int> map;
@@ -313,7 +358,6 @@ void QtxMRUAction::saveLinks( QtxResourceMgr* resMgr, const QString& section, co
     map.insert( *itr, 0 );
   }
 
-  QString itemPrefix( "item_" );
   QStringList items = resMgr->parameters( section );
   for ( QStringList::const_iterator it = items.begin(); it != items.end(); ++it )
   {
@@ -331,7 +375,9 @@ void QtxMRUAction::saveLinks( QtxResourceMgr* resMgr, const QString& section, co
   }
 
   int counter = 0;
-  for ( QStringList::const_iterator iter = lst.begin(); iter != lst.end(); ++iter, counter++ )
+  for ( QStringList::const_iterator iter = lst.begin(); 
+	iter != lst.end() && ( myHistoryCount < 0 || counter < myHistoryCount );
+	++iter, counter++ )
     resMgr->setValue( section, itemPrefix + QString().sprintf( "%03d", counter ), *iter );
 }
 
diff --git a/src/Qtx/QtxMRUAction.h b/src/Qtx/QtxMRUAction.h
index 708383f43..ee1159add 100755
--- a/src/Qtx/QtxMRUAction.h
+++ b/src/Qtx/QtxMRUAction.h
@@ -67,6 +67,9 @@ public:
   int          visibleCount() const;
   void         setVisibleCount( const int );
 
+  int          historyCount() const;
+  void         setHistoryCount( const int );
+
   void         remove( const int );
   void         remove( const QString& );
   void         insert( const QString& );
@@ -78,6 +81,9 @@ public:
   virtual void loadLinks( QtxResourceMgr*, const QString&, const bool = true );
   virtual void saveLinks( QtxResourceMgr*, const QString&, const bool = true ) const;
 
+public slots:
+  void         clear();
+
 signals:
   void         activated( const QString& );
 
@@ -91,6 +97,7 @@ private:
 private:
   QStringList  myLinks;        //!< most recent used items
   int          myVisCount;     //!< number of visible MRU items
+  int          myHistoryCount; //!< number of stored MRU items
   int          myLinkType;     //!< type of link names in menu
   int          myInsertMode;   //!< items insertion policy
 };
-- 
2.39.2