From 210b43dc47b3402147866b9cf5f430362d594bb8 Mon Sep 17 00:00:00 2001
From: csoler <retroshare.project@gmail.com>
Date: Sat, 9 Apr 2011 19:43:09 +0000
Subject: [PATCH] added temporisation to update of Flat shared files view.
 Makes it more handy for large lists

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@4144 b45a01b8-16f6-495d-af2f-9b41ad6348cc
---
 retroshare-gui/src/gui/RemoteDirModel.cpp | 26 ++++++++++++++++++-----
 retroshare-gui/src/gui/RemoteDirModel.h   |  8 ++++++-
 2 files changed, 28 insertions(+), 6 deletions(-)

diff --git a/retroshare-gui/src/gui/RemoteDirModel.cpp b/retroshare-gui/src/gui/RemoteDirModel.cpp
index 09daafc1b..b4cb2c2cc 100644
--- a/retroshare-gui/src/gui/RemoteDirModel.cpp
+++ b/retroshare-gui/src/gui/RemoteDirModel.cpp
@@ -24,6 +24,7 @@
 #include <QDesktopServices>
 #include <QUrl>
 #include <QMimeData>
+#include <QTimer>
 
 #include "RemoteDirModel.h"
 #include <retroshare/rsfiles.h>
@@ -1294,18 +1295,28 @@ TreeStyle_RDM::~TreeStyle_RDM()
 void FlatStyle_RDM::postMods()
 {
 	_ref_entries.clear() ;
+	_ref_stack.clear() ;
+	
+	_ref_stack.push_back(NULL) ; // init the stack with the topmost parent directory
 
 	std::cerr << "FlatStyle_RDM::postMods(): cleared ref entries" << std::endl;
+	updateRefs() ;
+}
 
-	std::vector<void *> stack(1,(void *)NULL) ;
+void FlatStyle_RDM::updateRefs()
+{
+	RetroshareDirModel::preMods() ;
 
-	while(!stack.empty())
+	static const uint32_t MAX_REFS_PER_SECOND = 2000 ;
+	uint32_t nb_treated_refs = 0 ;
+
+	while(!_ref_stack.empty())
 	{
-		void *ref = stack.back() ;
+		void *ref = _ref_stack.back() ;
 #ifdef RDM_DEBUG
 		std::cerr << "FlatStyle_RDM::postMods(): poped ref " << ref << std::endl;
 #endif
-		stack.pop_back() ;
+		_ref_stack.pop_back() ;
 		uint32_t flags = DIR_FLAGS_DETAILS;
 		DirDetails details ;
 
@@ -1317,7 +1328,12 @@ void FlatStyle_RDM::postMods()
 			std::cerr << "FlatStyle_RDM::postMods(): addign ref " << ref << std::endl;
 #endif
 			for(std::list<DirStub>::iterator it = details.children.begin(); it != details.children.end(); it++) 
-				stack.push_back(it->ref) ;
+				_ref_stack.push_back(it->ref) ;
+		}
+		if(++nb_treated_refs > MAX_REFS_PER_SECOND) 	// we've done enough, let's give back hand to 
+		{															// the user and setup a timer to finish the job later.
+			QTimer::singleShot(500,this,SLOT(updateRefs())) ;
+			break ;
 		}
 	}
 	std::cerr << "reference tab contains " << _ref_entries.size() << " files" << std::endl;
diff --git a/retroshare-gui/src/gui/RemoteDirModel.h b/retroshare-gui/src/gui/RemoteDirModel.h
index 3e21027eb..f77553bc2 100644
--- a/retroshare-gui/src/gui/RemoteDirModel.h
+++ b/retroshare-gui/src/gui/RemoteDirModel.h
@@ -162,6 +162,8 @@ class TreeStyle_RDM: public RetroshareDirModel
 //
 class FlatStyle_RDM: public RetroshareDirModel
 {
+	Q_OBJECT 
+
 	public:
 		FlatStyle_RDM(bool mode)
 			: RetroshareDirModel(mode)
@@ -170,6 +172,9 @@ class FlatStyle_RDM: public RetroshareDirModel
 
 		virtual ~FlatStyle_RDM() ;
 
+	protected slots:
+		void updateRefs() ;
+
 	protected:
 		virtual void postMods();
 
@@ -186,7 +191,8 @@ class FlatStyle_RDM: public RetroshareDirModel
 
 		QString computeDirectoryPath(const DirDetails& details) const ;
 
-		std::vector<std::pair<void *,QString> > _ref_entries ;
+		std::vector<std::pair<void *,QString> > _ref_entries ;// used to store the refs to display
+		std::vector<void *> _ref_stack ;		// used to store the refs to update
 };