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Better implementation of SessionSnapshots saving

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Bruno
2021-04-18 18:22:21 +02:00
parent d68987be0f
commit a50a6e129c
8 changed files with 67 additions and 93 deletions
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78
ActionManager.cpp
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@@ -1,6 +1,5 @@
#include <string>
#include <algorithm>
#include <sstream>
#include "Log.h"
#include "View.h"
@@ -28,7 +27,7 @@ Action::Action(): history_step_(0), history_max_step_(0)
{
}
void Action::init(const std::string &xml)
void Action::init()
{
// clean the history
history_doc_.Clear();
@@ -36,28 +35,6 @@ void Action::init(const std::string &xml)
history_max_step_ = 0;
// start fresh
store("Session start");
// clean the snapshots
snapshots_doc_.Clear();
snapshots_.clear();
if ( !xml.empty() ) {
if ( XMLResultError( snapshots_doc_.Parse( xml.c_str() ) ))
Log::Info("Failed to load snapshots");
else
{
const XMLElement* N = snapshots_doc_.RootElement();
for( ; N ; N=N->NextSiblingElement()) {
char c;
u_int64_t id = 0;
std::istringstream nodename( N->Name() );
nodename >> c >> id;
snapshots_.push_back(id);
}
}
}
}
void Action::store(const std::string &label)
@@ -173,48 +150,47 @@ void Action::snapshot(const std::string &label)
if (locked_ || label.empty())
return;
// get session to operate on
Session *se = Mixer::manager().session();
// create snapshot id
u_int64_t id = GlmToolkit::uniqueId();
snapshots_.push_back(id);
se->snapshots()->keys_.push_back(id);
// create snapshot node
XMLElement *sessionNode = snapshots_doc_.NewElement( SNAPSHOT_NODE(id) );
snapshots_doc_.InsertEndChild(sessionNode);
XMLElement *sessionNode = se->snapshots()->xmlDoc_->NewElement( SNAPSHOT_NODE(id) );
se->snapshots()->xmlDoc_->InsertEndChild(sessionNode);
// label describes the snapshot
sessionNode->SetAttribute("label", label.c_str());
// get session to operate on
Session *se = Mixer::manager().session();
// save all sources using source visitor
SessionVisitor sv(&snapshots_doc_, sessionNode);
SessionVisitor sv(se->snapshots()->xmlDoc_, sessionNode);
for (auto iter = se->begin(); iter != se->end(); ++iter, sv.setRoot(sessionNode) )
(*iter)->accept(sv);
// TODO: copy action history instead?
// TODO: copy current action history instead?
// debug
#ifdef ACTION_DEBUG
Log::Info("Snapshot stored %d '%s'", id, label.c_str());
// XMLSaveDoc(&xmlDoc_, "/home/bhbn/history.xml");
#endif
}
const char *Action::snapshotsDescription()
std::list<uint64_t> Action::snapshots() const
{
// get compact string
XMLPrinter xmlPrint;
snapshots_doc_.Print( &xmlPrint );
return xmlPrint.CStr();
Session *se = Mixer::manager().session();
return se->snapshots()->keys_;
}
std::string Action::label(uint64_t snapshotid) const
{
std::string l = "";
const XMLElement *sessionNode = snapshots_doc_.FirstChildElement( SNAPSHOT_NODE(snapshotid) );
// get snapshot node of target in current session
Session *se = Mixer::manager().session();
const XMLElement *sessionNode = se->snapshots()->xmlDoc_->FirstChildElement( SNAPSHOT_NODE(snapshotid) );
if (sessionNode) {
l = sessionNode->Attribute("label");
@@ -224,8 +200,9 @@ std::string Action::label(uint64_t snapshotid) const
void Action::setLabel (uint64_t snapshotid, const std::string &label)
{
// get history node of target
XMLElement *sessionNode = snapshots_doc_.FirstChildElement( SNAPSHOT_NODE(snapshotid) );
// get snapshot node of target in current session
Session *se = Mixer::manager().session();
XMLElement *sessionNode = se->snapshots()->xmlDoc_->FirstChildElement( SNAPSHOT_NODE(snapshotid) );
if (sessionNode) {
sessionNode->SetAttribute("label", label.c_str());
@@ -234,12 +211,13 @@ void Action::setLabel (uint64_t snapshotid, const std::string &label)
void Action::remove(uint64_t snapshotid)
{
// get history node of target
XMLElement *sessionNode = snapshots_doc_.FirstChildElement( SNAPSHOT_NODE(snapshotid) );
// get snapshot node of target in current session
Session *se = Mixer::manager().session();
XMLElement *sessionNode = se->snapshots()->xmlDoc_->FirstChildElement( SNAPSHOT_NODE(snapshotid) );
if (sessionNode) {
snapshots_doc_.DeleteChild( sessionNode );
snapshots_.remove(snapshotid);
se->snapshots()->xmlDoc_->DeleteChild( sessionNode );
se->snapshots()->keys_.remove(snapshotid);
}
}
@@ -248,8 +226,9 @@ void Action::restore(uint64_t snapshotid)
// lock
locked_ = true;
// get history node of target
XMLElement *sessionNode = snapshots_doc_.FirstChildElement( SNAPSHOT_NODE(snapshotid) );
// get snapshot node of target in current session
Session *se = Mixer::manager().session();
XMLElement *sessionNode = se->snapshots()->xmlDoc_->FirstChildElement( SNAPSHOT_NODE(snapshotid) );
if (sessionNode) {
// actually restore
@@ -260,6 +239,5 @@ void Action::restore(uint64_t snapshotid)
locked_ = false;
store("Snapshot " + label(snapshotid));
}