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/*
metaobjecttreemodel.cpp
This file is part of GammaRay, the Qt application inspection and manipulation tool.
SPDX-FileCopyrightText: 2012 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
Author: Kevin Funk <kevin.funk@kdab.com>
SPDX-License-Identifier: GPL-2.0-or-later
Contact KDAB at <info@kdab.com> for commercial licensing options.
*/
#include "metaobjecttreemodel.h"
#include <core/probe.h>
#include <core/qmetaobjectvalidator.h>
#include <core/metaobjectregistry.h>
#include <common/metatypedeclarations.h>
#include <common/tools/metaobjectbrowser/qmetaobjectmodel.h>
#include <QDebug>
#include <QThread>
#include <QTimer>
#include <cassert>
using namespace GammaRay;
static inline MetaObjectRegistry *registry()
{
return Probe::instance()->metaObjectRegistry();
}
MetaObjectTreeModel::MetaObjectTreeModel(QObject *parent)
: QAbstractItemModel(parent)
, m_pendingDataChangedTimer(new QTimer(this))
{
connect(registry(), &MetaObjectRegistry::beforeMetaObjectAdded, this, &MetaObjectTreeModel::addMetaObject);
connect(registry(), &MetaObjectRegistry::afterMetaObjectAdded, this, &MetaObjectTreeModel::endAddMetaObject);
connect(registry(), &MetaObjectRegistry::dataChanged, this, &MetaObjectTreeModel::scheduleDataChange);
m_pendingDataChangedTimer->setInterval(100);
m_pendingDataChangedTimer->setSingleShot(true);
connect(m_pendingDataChangedTimer, &QTimer::timeout, this, &MetaObjectTreeModel::emitPendingDataChanged);
}
MetaObjectTreeModel::~MetaObjectTreeModel() = default;
QVariant MetaObjectTreeModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid())
return QVariant();
const int column = index.column();
const QMetaObject *object = metaObjectForIndex(index);
if (role == Qt::DisplayRole) {
switch (column) {
case QMetaObjectModel::ObjectColumn:
return registry()->data(object, MetaObjectRegistry::ClassName);
case QMetaObjectModel::ObjectSelfCountColumn:
return registry()->data(object, MetaObjectRegistry::SelfCount);
case QMetaObjectModel::ObjectInclusiveCountColumn:
return registry()->data(object, MetaObjectRegistry::InclusiveCount);
case QMetaObjectModel::ObjectSelfAliveCountColumn:
return registry()->data(object, MetaObjectRegistry::SelfAliveCount);
case QMetaObjectModel::ObjectInclusiveAliveCountColumn:
return registry()->data(object, MetaObjectRegistry::InclusiveAliveCount);
default:
break;
}
} else if (role == QMetaObjectModel::MetaObjectRole) {
if (!registry()->isValid(object))
return QVariant();
return QVariant::fromValue<const QMetaObject *>(registry()->aliveInstance(object));
} else if (role == QMetaObjectModel::MetaObjectIssues && index.column() == QMetaObjectModel::ObjectColumn) {
if (!registry()->isStatic(object))
return QVariant();
const auto r = QMetaObjectValidator::check(registry()->aliveInstance(object));
return r == QMetaObjectValidatorResult::NoIssue ? QVariant() : QVariant::fromValue(r);
} else if (role == QMetaObjectModel::MetaObjectInvalid && index.column() == QMetaObjectModel::ObjectInclusiveAliveCountColumn) {
if (!registry()->isValid(object))
return true;
return QVariant();
}
return QVariant();
}
int MetaObjectTreeModel::columnCount(const QModelIndex &parent) const
{
Q_UNUSED(parent);
return QMetaObjectModel::_Last;
}
int MetaObjectTreeModel::rowCount(const QModelIndex &parent) const
{
if (parent.column() > 0)
return 0;
const QMetaObject *metaObject = metaObjectForIndex(parent);
return registry()->childrenOf(metaObject).size();
}
QModelIndex MetaObjectTreeModel::parent(const QModelIndex &child) const
{
if (!child.isValid())
return {};
const QMetaObject *object = metaObjectForIndex(child);
Q_ASSERT(object);
const QMetaObject *parentObject = registry()->parentOf(object);
return indexForMetaObject(parentObject);
}
QModelIndex MetaObjectTreeModel::index(int row, int column, const QModelIndex &parent) const
{
const QMetaObject *parentObject = metaObjectForIndex(parent);
const QVector<const QMetaObject *> &children = registry()->childrenOf(parentObject);
if (row < 0 || column < 0 || row >= children.size() || column >= columnCount())
return {};
const QMetaObject *object = children.at(row);
return createIndex(row, column, const_cast<QMetaObject *>(object));
}
QModelIndexList MetaObjectTreeModel::match(const QModelIndex &start, int role,
const QVariant &value, int hits,
Qt::MatchFlags flags) const
{
if (role == QMetaObjectModel::MetaObjectRole) {
const auto mo = value.value<const QMetaObject *>();
return QModelIndexList() << indexForMetaObject(mo);
}
return QAbstractItemModel::match(start, role, value, hits, flags);
}
void MetaObjectTreeModel::addMetaObject(const QMetaObject *metaObject)
{
const QMetaObject *parentMetaObject = registry()->parentOf(metaObject);
const QModelIndex parentIndex = indexForMetaObject(parentMetaObject);
// either we get a proper parent and hence valid index or there is no parent
assert(parentIndex.isValid() || !parentMetaObject);
int size = registry()->childrenOf(parentMetaObject).size();
beginInsertRows(parentIndex, size, size);
}
void MetaObjectTreeModel::endAddMetaObject(const QMetaObject *metaObject)
{
Q_UNUSED(metaObject)
endInsertRows();
}
QModelIndex MetaObjectTreeModel::indexForMetaObject(const QMetaObject *metaObject) const
{
if (!metaObject)
return {};
const QMetaObject *parentObject = registry()->parentOf(metaObject);
Q_ASSERT(parentObject != metaObject);
const QModelIndex parentIndex = indexForMetaObject(parentObject);
if (!parentIndex.isValid() && parentObject)
return QModelIndex();
const int row = registry()->childrenOf(parentObject).indexOf(metaObject);
if (row < 0)
return QModelIndex();
return index(row, 0, parentIndex);
}
const QMetaObject *MetaObjectTreeModel::metaObjectForIndex(const QModelIndex &index)
{
if (!index.isValid())
return nullptr;
void *internalPointer = index.internalPointer();
const QMetaObject *metaObject = reinterpret_cast<QMetaObject *>(internalPointer);
return metaObject;
}
void GammaRay::MetaObjectTreeModel::scheduleDataChange(const QMetaObject *mo)
{
m_pendingDataChanged.insert(mo);
if (!m_pendingDataChangedTimer->isActive())
m_pendingDataChangedTimer->start();
}
void GammaRay::MetaObjectTreeModel::emitPendingDataChanged()
{
for (auto mo : std::as_const(m_pendingDataChanged)) {
auto index = indexForMetaObject(mo);
if (!index.isValid())
continue;
emit dataChanged(index.sibling(index.row(), QMetaObjectModel::ObjectSelfCountColumn),
index.sibling(index.row(), QMetaObjectModel::ObjectInclusiveAliveCountColumn));
}
m_pendingDataChanged.clear();
}
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