refactor SessionImpl to support nested interface modules on the API

This commit is contained in:
Fischlurch 2010-03-09 06:31:07 +01:00
parent fa0482fab4
commit c7a9b04fba
6 changed files with 282 additions and 31 deletions

View file

@ -120,9 +120,9 @@ namespace mobject {
static session::SessManager& current;
DefaultsAccess defaults;
TimelineAccess timelines;
SequenceAccess sequences;
DefaultsAccess defaults; ///< manages default configured objects
TimelineAccess timelines; ///< collection of timelines (top level)
SequenceAccess sequences; ///< collection of sequences
virtual bool isValid () = 0;
virtual void attach (PMO& placement) = 0;

View file

@ -30,18 +30,6 @@
namespace mobject {
namespace session {
/////////////////////////////////////////TODO temporary hack: use Meyer's singleton
namespace {
DefsManager&
getDummyDefaultsManager()
{
static scoped_ptr<DefsManager> dummyInstance(0);
if (!dummyInstance) dummyInstance.reset (new DefsManager);
return *dummyInstance;
}
}
/////////////////////////////////////////TODO temporary hack
/** create a new empty session with default values.
@ -50,9 +38,12 @@ namespace session {
* system (and this is desirable)
*/
SessionImpl::SessionImpl ()
: Session( getDummyDefaultsManager() ) ///////TODO temporary hack
, pIdx_( MObject::create (getDummyDefaultsManager())) ////TODO temporary hack
, fixture(new Fixture)
: SessionInterfaceModules()
, Session( defaultsManager_
, timelineRegistry_
, sequenceRegistry_ )
, contents_( MObject::create (defaultsManager_))
, fixture_(new Fixture)
{
INFO (session, "new Session created.");
}
@ -85,14 +76,14 @@ namespace session {
void
SessionImpl::add (PMO& placement)
SessionImpl::attach (PMO& placement)
{
UNIMPLEMENTED ("add Placement to the current Session");
}
bool
SessionImpl::remove (PMO& placement)
SessionImpl::detach (PMO& placement)
{
UNIMPLEMENTED ("search and remove a given Placement from current Session");
return false; // TODO

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@ -50,6 +50,7 @@
#include "proc/mobject/session/fixture.hpp"
#include "proc/mobject/session/placement-index.hpp"
#include "proc/mobject/session/session-services.hpp"
#include "proc/mobject/session/session-interface-modules.hpp"
#include "proc/mobject/session/session-service-fetch.hpp"
#include "proc/mobject/session/session-service-explore-scope.hpp"
@ -58,8 +59,6 @@
#include "proc/mobject/session/placement-index-query-resolver.hpp"
#include <boost/scoped_ptr.hpp>
#include <vector>
@ -67,22 +66,20 @@
namespace mobject {
namespace session {
using std::vector;
using boost::scoped_ptr;
using std::tr1::shared_ptr;
/**
* Implementation class for the Session interface
*/
class SessionImpl : public mobject::Session
class SessionImpl
: protected SessionInterfaceModules
, public mobject::Session
{
PlacementIndex pIdx_;
PlacementIndex contents_;
PFix fixture;
PFix fixture_;
scoped_ptr<DefsManager> defaultsManager_; ///////////TODO: later, this will be the real defaults manager. Currently this is just never initialised (11/09)
/* ==== Session API ==== */
@ -102,8 +99,8 @@ namespace session {
PlacementIndex&
getPlacementIndex()
{
ENSURE (pIdx_.isValid());
return pIdx_;
ENSURE (contents_.isValid());
return contents_;
}
};

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@ -0,0 +1,130 @@
/*
SESSION-INTERFACE-MODULES.hpp - holds the complete session data to be edited by the user
Copyright (C) Lumiera.org
2010, Hermann Vosseler <Ichthyostega@web.de>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/** @file session-interface-modules.hpp
** Self-contained sub-elements on the Session API.
** Part of the Session interface is exposed as self-contained
** interface modules -- both for notational convenience at the
** usage site, and for keeping session implementation code manageable.
** Clients access these modules as nested parts of the public Session interface
** through references exposing just the respective interfaces, while the actual
** implementation is located in-place (within the SesssionImpl object), packaged
** into a non-public baseclass.
** - the DefsManager acts as frontend to the system of default configurations
** and config rules, allowing to retrieve the \em default version of various
** kinds of objects
** - the top-level Timeline (structural assets) act as facade and entry point
** to the high-level-model (session contents). There is an table of timelines,
** managed automatically and kept in sync with the session::Binding elements
** located directly below model root.
** - likewise there is an table of all Sequence (structural assets), which
** correspond to the roots of track trees, attached below model root.
**
** \par maintaining the link between session, timelines and sequences
** Timeline and Sequence are implemented as asset::Struct, causing them to be
** maintained by the AssetManager, which in turn is attached to the session::Root
** (WIP 3/2010: yet to be implemented). Creation and destruction of timelines and
** sequences is closely connected to some structural changes within the model
** - Timeline is related to session::Binding, where the timelines are leading
** and the binding elements are dependent on both a timeline and a sequence
** - Sequence is related to a Placement<session::Track> -- but only if attached
** immediately below model root; here the tracks are leading and the sequences
** are completely dependent.
** In any case, ctor and dtor of Timeline and Sequence have to care for proper
** registration into the SessionInterfaceModules for timelines and sequences
** respectively. This is accomplished by using kind-of a backdoor, a SessionServices
** (proc internal API) definition, allowing direct communication on implementation
** level, without the need to expose this access point on the public session API.
** The impl::ElementTracker implemented in this sourcefile here relieves these
** calls to maintain a list of asset smart-ptrs
**
** @see SessionImpl
** @see session-services.hpp
**
*/
#ifndef MOBJECT_SESSION_INTERFACE_MODULES_H
#define MOBJECT_SESSION_INTERFACE_MODULES_H
#include "lib/p.hpp"
#include "lib/ref-array-impl.hpp"
namespace mobject {
namespace session {
namespace impl { // impl: list of elements to track
using lumiera::P;
/**
* Custom implementation of the RefArray interface,
* used by the Session to keep track of all timelines
* and sequences. The registration/deregistration functions
* are accessible as SessionServices
*/
template<typename ELM>
class ElementTracker
: public lib::RefArrayVectorWrapper<P<ELM> >
{
public:
void
add (P<ELM> const& asset)
{
UNIMPLEMENTED ("attach entry to session");
}
void
remove (P<ELM> const& asset)
{
UNIMPLEMENTED ("detach entry from session");
}
};
} //(End) impl list of elements to track
typedef impl::ElementTracker<asset::Timeline> TimelineTracker;
typedef impl::ElementTracker<asset::Sequence> SequenceTracker;
/**
* Collection of implementation components,
* providing self-contained sub-elements
* exposed on the public Session API.
*/
struct SessionInterfaceModules
: boost::noncopyable
{
DefsManager defaultsManager_;
TimelineTracker timelineRegistry_;
SequenceTracker sequenceRegistry_;
};
}} // namespace mobject::session
#endif

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@ -25,6 +25,10 @@ PLANNED "DeleteClip_test" DeleteClip_test <<END
END
PLANNED "SessionElementTracker_test" SessionElementTracker_test <<END
END
TEST "external MObject references" MObjectRef_test <<END
out: MRef-NIL
out: sizeof\( .+MORef.+session.Clip.+ \) = (32)|(24)

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@ -0,0 +1,129 @@
/*
SessionElementTracker(Test) - check the facility to track and expose selected model elements
Copyright (C) Lumiera.org
2008-2010, Hermann Vosseler <Ichthyostega@web.de>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
* *****************************************************/
#include "lib/test/run.hpp"
//#include "proc/mobject/session.hpp"
//#include "proc/mobject/mobject-ref.hpp"
//#include "proc/mobject/session/binding.hpp"
//#include "proc/mobject/session/fixture.hpp" // TODO only temporarily needed
//#include "proc/assetmanager.hpp"
#include "proc/asset/timeline.hpp"
#include "proc/asset/sequence.hpp"
//#include "proc/asset/pipe.hpp"
//#include "lib/lumitime.hpp"
//#include "lib/query.hpp"
//#include "lib/util.hpp"
//#include <iostream>
//using util::isSameObject;
//using util::contains;
//using std::string;
//using std::cout;
namespace mobject {
namespace session {
namespace test {
// using proc_interface::AssetManager;
// using proc_interface::PAsset;
using asset::PTimeline;
using asset::PSequence;
// using asset::RBinding;
// using asset::RTrack;
// using asset::Pipe;
// using lumiera::Query;
// using lumiera::Time;
/********************************************************************************
* @test verify the tracking of special session/model elements, to be exposed
* through an self-contained interface module on the session API.
*
* @todo WIP-WIP-WIP
*
* @see timeline-sequence-handling-test.cpp
* @see session-interface-modules.hpp
* @see ref-array-test.cpp
*/
class SessionElementTracker_test : public Test
{
virtual void
run (Arg)
{
verify_trackingMechanism();
verify_integration();
}
void
verify_trackingMechanism()
{
UNIMPLEMENTED ("use a test dummy class and do a dry run of the ElementTracker");
}
void
verify_integration()
{
Session::current.reset();
CHECK (Session::current.isUp());
PSess sess = Session::current;
CHECK (sess->isValid());
uint num_timelines = sess->timelines.size();
CHECK (0 < num_timelines);
PTimeline specialTimeline (asset::Struct::create (Query<Timeline> ("id(testical)")));
CHECK (specialTimeline);
CHECK (num_timelines + 1 == sess->timelines.size());
CHECK (specialTimeline == session->timelines[num_timelines]);
CHECK (specialTimeline.use_count() == 3); // we, the AssetManager and the session
PTimeline anotherTimeline (asset::Struct::create (Query<Timeline> ()));
CHECK (num_timelines + 2 == sess->timelines.size());
CHECK (specialTimeline == session->timelines[num_timelines]);
CHECK (anotherTimeline == session->timelines[num_timelines+1]); // new one got appended at the end
AssetManager& assetM (AssetManager::instance());
CHECK (assetM.known (specialTimeline->getID()));
assetM.remove (specialTimeline->getID()); //////////////TICKET #550
CHECK (!assetM.known (specialTimeline->getID()));
CHECK (num_timelines + 1 == sess->timelines.size());
CHECK (anotherTimeline == session->timelines[num_timelines]); // moved to the previous slot
CHECK (specialTimeline.use_count() == 1); // we're holding the last reference
}
};
/** Register this test class... */
LAUNCHER (SessionElementTracker_test, "unit session");
}}} // namespace mobject::session::test