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/*
* Copyright (c) 2011 Remko Tronçon
* Licensed under the GNU General Public License v3.
* See Documentation/Licenses/GPLv3.txt for more information.
*/
#include <Swift/Controllers/Roster/TableRoster.h>
#include <boost/cast.hpp>
#include <cassert>
#include <algorithm>
#include <boost/numeric/conversion/cast.hpp>
#include <Swiften/Base/foreach.h>
#include <Swiften/Network/TimerFactory.h>
#include <Swiften/Network/Timer.h>
#include <Swift/Controllers/Roster/Roster.h>
#include <Swift/Controllers/Roster/GroupRosterItem.h>
#include <Swift/Controllers/Roster/LeastCommonSubsequence.h>
namespace Swift {
struct SectionNameEquals {
bool operator()(const TableRoster::Section& s1, const TableRoster::Section& s2) const {
return s1.name == s2.name;
}
};
template<typename T>
struct True {
bool operator()(const T&, const T&) const {
return true;
}
};
struct ItemEquals {
bool operator()(const TableRoster::Item& i1, const TableRoster::Item& i2) const {
return i1.jid == i2.jid;
}
};
struct ItemNeedsUpdate {
bool operator()(const TableRoster::Item& i1, const TableRoster::Item& i2) const {
return i1.status != i2.status || i1.description != i2.description || i1.name != i2.name || i1.avatarPath.empty() != i2.avatarPath.empty();
}
};
struct CreateIndexForSection {
CreateIndexForSection(size_t section) : section(section) {
}
TableRoster::Index operator()(size_t row) const {
return TableRoster::Index(section, row);
}
size_t section;
};
}
using namespace Swift;
TableRoster::TableRoster(Roster* model, TimerFactory* timerFactory, int updateDelay) : model(model), updatePending(false) {
updateTimer = timerFactory->createTimer(updateDelay);
updateTimer->onTick.connect(boost::bind(&TableRoster::handleUpdateTimerTick, this));
if (model) {
model->onChildrenChanged.connect(boost::bind(&TableRoster::scheduleUpdate, this));
model->onGroupAdded.connect(boost::bind(&TableRoster::scheduleUpdate, this));
model->onDataChanged.connect(boost::bind(&TableRoster::scheduleUpdate, this));
}
}
TableRoster::~TableRoster() {
updateTimer->stop();
updateTimer->onTick.disconnect(boost::bind(&TableRoster::handleUpdateTimerTick, this));
if (model) {
model->onDataChanged.disconnect(boost::bind(&TableRoster::scheduleUpdate, this));
model->onGroupAdded.disconnect(boost::bind(&TableRoster::scheduleUpdate, this));
model->onChildrenChanged.disconnect(boost::bind(&TableRoster::scheduleUpdate, this));
}
}
size_t TableRoster::getNumberOfSections() const {
return sections.size();
}
const std::string& TableRoster::getSectionTitle(size_t section) {
return sections[section].name;
}
size_t TableRoster::getNumberOfRowsInSection(size_t section) const {
return sections[section].items.size();
}
const TableRoster::Item& TableRoster::getItem(const Index& index) const {
return sections[index.section].items[index.row];
}
void TableRoster::handleUpdateTimerTick() {
updateTimer->stop();
updatePending = false;
// Get a model for the new roster
std::vector<Section> newSections;
if (model) {
foreach(RosterItem* item, model->getRoot()->getDisplayedChildren()) {
if (GroupRosterItem* groupItem = boost::polymorphic_downcast<GroupRosterItem*>(item)) {
//std::cerr << "* " << groupItem->getDisplayName() << std::endl;
Section section(groupItem->getDisplayName());
foreach(RosterItem* groupChildItem, groupItem->getDisplayedChildren()) {
if (ContactRosterItem* contact = boost::polymorphic_downcast<ContactRosterItem*>(groupChildItem)) {
//std::cerr << " - " << contact->getDisplayJID() << std::endl;
section.items.push_back(Item(contact->getDisplayName(), contact->getStatusText(), contact->getDisplayJID(), contact->getStatusShow(), contact->getAvatarPath()));
}
}
newSections.push_back(section);
}
}
}
// Do a diff with the previous roster
Update update;
std::vector<size_t> sectionUpdates;
std::vector<size_t> sectionPostUpdates;
computeIndexDiff<Section,SectionNameEquals,True<Section> >(sections, newSections, sectionUpdates, sectionPostUpdates, update.deletedSections, update.insertedSections);
assert(sectionUpdates.size() == sectionPostUpdates.size());
for (size_t i = 0; i < sectionUpdates.size(); ++i) {
assert(sectionUpdates[i] < sections.size());
assert(sectionPostUpdates[i] < newSections.size());
std::vector<size_t> itemUpdates;
std::vector<size_t> itemPostUpdates;
std::vector<size_t> itemRemoves;
std::vector<size_t> itemInserts;
computeIndexDiff<Item, ItemEquals, ItemNeedsUpdate >(sections[sectionUpdates[i]].items, newSections[sectionPostUpdates[i]].items, itemUpdates, itemPostUpdates, itemRemoves, itemInserts);
size_t end = update.insertedRows.size();
update.insertedRows.resize(update.insertedRows.size() + itemInserts.size());
std::transform(itemInserts.begin(), itemInserts.end(), update.insertedRows.begin() + boost::numeric_cast<long long>(end), CreateIndexForSection(sectionPostUpdates[i]));
end = update.deletedRows.size();
update.deletedRows.resize(update.deletedRows.size() + itemRemoves.size());
std::transform(itemRemoves.begin(), itemRemoves.end(), update.deletedRows.begin() + boost::numeric_cast<long long>(end), CreateIndexForSection(sectionUpdates[i]));
end = update.updatedRows.size();
update.updatedRows.resize(update.updatedRows.size() + itemUpdates.size());
std::transform(itemUpdates.begin(), itemUpdates.end(), update.updatedRows.begin() + boost::numeric_cast<long long>(end), CreateIndexForSection(sectionPostUpdates[i]));
}
// Switch the old model with the new
sections.swap(newSections);
/*
std::cerr << "-S: ";
for (size_t i = 0; i < update.deletedSections.size(); ++i) {
std::cerr << update.deletedSections[i] << " ";
}
std::cerr << std::endl;
std::cerr << "+S: ";
for (size_t i = 0; i < update.insertedSections.size(); ++i) {
std::cerr << update.insertedSections[i] << " ";
}
std::cerr << std::endl;
std::cerr << "-R: ";
for (size_t i = 0; i < update.deletedRows.size(); ++i) {
std::cerr << update.deletedRows[i].section << "," << update.deletedRows[i].row << " ";
}
std::cerr << std::endl;
std::cerr << "*R: ";
for (size_t i = 0; i < update.updatedRows.size(); ++i) {
std::cerr << update.updatedRows[i].section << "," << update.updatedRows[i].row << " ";
}
std::cerr << std::endl;
std::cerr << "+R: ";
for (size_t i = 0; i < update.insertedRows.size(); ++i) {
std::cerr << update.insertedRows[i].section << "," << update.insertedRows[i].row << " ";
}
std::cerr << std::endl;
*/
// Emit the update
onUpdate(update);
}
void TableRoster::scheduleUpdate() {
if (!updatePending) {
updatePending = true;
updateTimer->start();
}
}
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Swift