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// -*- C++ -*-
//
// Package: Core
// Class : FWModelChangeManager
//
// Implementation:
// <Notes on implementation>
//
// Original Author: Chris Jones
// Created: Thu Jan 17 19:13:46 EST 2008
//
// system include files
#include <cassert>
#include <memory>
#include <exception>
// user include files
#include "Fireworks/Core/interface/FWModelChangeManager.h"
#include "Fireworks/Core/interface/FWEventItem.h"
#include "Fireworks/Core/interface/fwLog.h"
#include "FWCore/Utilities/interface/Exception.h"
//
// constants, enums and typedefs
//
//
// static data member definitions
//
//
// constructors and destructor
//
FWModelChangeManager::FWModelChangeManager() : m_depth(0) {}
// FWModelChangeManager::FWModelChangeManager(const FWModelChangeManager& rhs)
// {
// // do actual copying here;
// }
FWModelChangeManager::~FWModelChangeManager() {}
//
// assignment operators
//
// const FWModelChangeManager& FWModelChangeManager::operator=(const FWModelChangeManager& rhs)
// {
// //An exception safe implementation is
// FWModelChangeManager temp(rhs);
// swap(rhs);
//
// return *this;
// }
//
// member functions
//
void FWModelChangeManager::beginChanges() { ++m_depth; }
void FWModelChangeManager::changed(const FWModelId& iID) {
FWChangeSentry sentry(*this);
assert(iID.item());
assert(iID.item()->id() < m_changes.size());
m_changes[iID.item()->id()].insert(iID);
}
void FWModelChangeManager::changed(const FWEventItem* iItem) {
FWChangeSentry sentry(*this);
assert(nullptr != iItem);
m_itemChanges.insert(iItem);
//remove any pending changes on models owned by this item
assert(iItem->id() < m_changes.size());
m_changes[iItem->id()].clear();
}
static void sendChangeSignalsAreDone(FWModelChangeManager* iCM) {
//since this can cause other changes, we might as well aggregate them
FWChangeSentry sentry(*iCM);
iCM->changeSignalsAreDone_();
}
void FWModelChangeManager::endChanges() {
assert(m_depth != 0);
//makes sure that 'changeSignalsAreDone is called if changeSignalsAreComing_ is sent
bool guard(false);
if (0 == --m_depth) {
unsigned int index = 0;
for (std::set<const FWEventItem*>::iterator itChanges = m_itemChanges.begin(); itChanges != m_itemChanges.end();
++itChanges, ++index) {
if (!guard) {
// std::shared_ptr<FWModelChangeManager> done(this, &sendChangeSignalsAreDone);
guard = true;
changeSignalsAreComing_();
}
try {
const FWEventItem* item = (*itChanges);
item->itemChanged_.emit(item);
} catch (const cms::Exception& iE) {
fwLog(fwlog::kError) << (*itChanges)->name() << " had the failure in process FWItemChanged signals\n"
<< iE.what() << std::endl;
} catch (const std::bad_alloc& iE) {
std::cerr << "Ran out of memory while processing " << (*itChanges)->name() << std::endl;
exit(1);
} catch (const std::exception& iE) {
fwLog(fwlog::kError) << (*itChanges)->name() << " had the failure in process FWItemChanged signals (2) \n"
<< iE.what() << std::endl;
}
}
m_itemChanges.clear();
for (size_t ci = 0, ce = m_changes.size(), si = 0; ci != ce; ++ci, ++si) {
FWModelIds& changes = m_changes[ci];
if (not changes.empty()) {
if (!guard) {
// std::shared_ptr<FWModelChangeManager> done(this, &sendChangeSignalsAreDone);
guard = true;
changeSignalsAreComing_();
try {
const FWEventItem* item = changes.begin()->item();
item->changed_.emit(changes);
} catch (const cms::Exception& iE) {
fwLog(fwlog::kError) << changes.begin()->item()->name()
<< " had the failure in process FWModelChangeSignals\n"
<< iE.what() << "\n";
} catch (const std::bad_alloc& iE) {
// GE: if we run out of memory why do we assume that we will be able to print?
fwLog(fwlog::kError) << "Ran out of memory while processing " << changes.begin()->item()->name() << "\n";
exit(1);
} catch (const std::exception& iE) {
fwLog(fwlog::kError) << changes.begin()->item()->name()
<< " had the failure in process FWModelChangeSignals (2)\n"
<< iE.what() << "\n";
}
}
}
changes.clear();
}
}
if (guard)
sendChangeSignalsAreDone(this);
}
void FWModelChangeManager::newItemSlot(FWEventItem* iItem) {
assert(nullptr != iItem);
assert(iItem->id() == m_changes.size());
assert(iItem->id() == m_changeSignals.size());
m_changes.push_back(FWModelIds());
m_changeSignals.push_back(FWModelChangeSignal());
m_itemChangeSignals.push_back(FWItemChangeSignal());
//propagate our signal to the item
m_changeSignals.back().connect(iItem->changed_);
m_itemChangeSignals.back().connect(iItem->itemChanged_);
}
/** Whenever all the items are removed from the FWItemsManager
clean also the associated vectors here.
*/
void FWModelChangeManager::itemsGoingToBeClearedSlot(void) {
m_changes.clear();
m_changeSignals.clear();
m_itemChangeSignals.clear();
m_itemChanges.clear();
}
//
// const member functions
//
//
// static member functions
//
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