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/*
abstractconnectionsmodel.cpp
This file is part of GammaRay, the Qt application inspection and manipulation tool.
SPDX-FileCopyrightText: 2014 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
Author: Volker Krause <volker.krause@kdab.com>
SPDX-License-Identifier: GPL-2.0-or-later
Contact KDAB at <info@kdab.com> for commercial licensing options.
*/
#include <config-gammaray.h>
#include "abstractconnectionsmodel.h"
#include "common/tools/objectinspector/connectionsmodelroles.h"
#include "core/util.h"
#include <QMetaMethod>
#include <QStringList>
using namespace GammaRay;
AbstractConnectionsModel::AbstractConnectionsModel(QObject *parent)
: QAbstractTableModel(parent)
{
}
AbstractConnectionsModel::~AbstractConnectionsModel() = default;
int AbstractConnectionsModel::columnCount(const QModelIndex &parent) const
{
Q_UNUSED(parent);
return 4;
}
int AbstractConnectionsModel::rowCount(const QModelIndex &parent) const
{
if (parent.isValid())
return 0;
return m_connections.size();
}
QVariant AbstractConnectionsModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid())
return QVariant();
const Connection &conn = m_connections.at(index.row());
if (role == Qt::DisplayRole && index.column() == 3) {
switch (conn.type) { // see qobject_p.h
case 0:
if (!conn.endpoint || !m_object)
return tr("Auto");
return tr("Auto (%1)").arg(conn.endpoint->thread() == m_object->thread() ? tr("Direct") : tr("Queued"));
case 1:
return tr("Direct");
case 2:
return tr("Queued");
case 3: // Qt5
case 4: // Qt4
return tr("Blocking");
default:
return tr("Unknown: %1").arg(conn.type);
}
}
if (role == ConnectionsModelRoles::WarningFlagRole && index.column() == 0)
return isDuplicate(conn) || isDirectCrossThreadConnection(conn);
if (role == Qt::ToolTipRole) {
QStringList tips;
if (isDuplicate(conn))
tips << tr(
"Connections exists multiple times.\nThe connected slot is called multiple times when the signal is emitted.");
if (isDirectCrossThreadConnection(conn))
tips << tr(
"Direct cross-thread connection.\nThe connected slot is called in the context of the emitting thread.");
if (!tips.isEmpty())
return tips.join(QStringLiteral("\n\n"));
}
if (role == ConnectionsModelRoles::EndpointRole)
return QVariant::fromValue(conn.endpoint.data());
if (role == ConnectionsModelRoles::ActionRole) {
if (conn.endpoint && conn.endpoint != m_object)
return ConnectionsModelActions::NavigateToEndpoint;
return ConnectionsModelActions::NoAction;
}
return QVariant();
}
QVariant AbstractConnectionsModel::headerData(int section, Qt::Orientation orientation,
int role) const
{
if (section == 3 && orientation == Qt::Horizontal && role == Qt::DisplayRole)
return tr("Type");
return QAbstractItemModel::headerData(section, orientation, role);
}
QString AbstractConnectionsModel::displayString(QObject *object, int methodIndex)
{
if (!object)
return tr("<destroyed>");
if (methodIndex < 0)
return tr("<unknown>");
const QMetaMethod method = object->metaObject()->method(methodIndex);
return Util::prettyMethodSignature(method);
}
QString AbstractConnectionsModel::displayString(QObject *object)
{
if (!object)
return tr("<destroyed>");
return Util::displayString(object);
}
int AbstractConnectionsModel::signalIndexToMethodIndex(QObject *object, int signalIndex)
{
if (signalIndex < 0)
return signalIndex;
Q_ASSERT(object);
return Util::signalIndexToMethodIndex(object->metaObject(), signalIndex);
}
QMap<int, QVariant> AbstractConnectionsModel::itemData(const QModelIndex &index) const
{
QMap<int, QVariant> d = QAbstractTableModel::itemData(index);
d.insert(ConnectionsModelRoles::WarningFlagRole,
data(index, ConnectionsModelRoles::WarningFlagRole));
d.insert(ConnectionsModelRoles::ActionRole, data(index, ConnectionsModelRoles::ActionRole));
return d;
}
bool AbstractConnectionsModel::isDuplicate(const QVector<Connection> &connections, const AbstractConnectionsModel::Connection &conn)
{
for (const Connection &c : std::as_const(connections)) {
if (&c == &conn)
continue;
if (c.endpoint == conn.endpoint
&& c.slotIndex >= 0 && c.slotIndex == conn.slotIndex
&& c.signalIndex >= 0 && c.signalIndex == conn.signalIndex)
return true;
}
return false;
}
bool AbstractConnectionsModel::isDuplicate(const Connection &conn) const
{
return isDuplicate(m_connections, conn);
}
bool AbstractConnectionsModel::isDirectCrossThreadConnection(QObject *object, const AbstractConnectionsModel::Connection &conn)
{
if (!conn.endpoint || !object || conn.endpoint->thread() == object->thread())
return false;
return conn.type == 1; // direct
}
bool AbstractConnectionsModel::isDirectCrossThreadConnection(const Connection &conn) const
{
return isDirectCrossThreadConnection(m_object, conn);
}
void AbstractConnectionsModel::clear()
{
if (m_connections.isEmpty())
return;
beginRemoveRows(QModelIndex(), 0, m_connections.size() - 1);
m_connections.clear();
endRemoveRows();
}
void AbstractConnectionsModel::setConnections(const QVector<Connection> &connections)
{
Q_ASSERT(m_connections.isEmpty());
if (connections.isEmpty())
return;
beginInsertRows(QModelIndex(), 0, connections.size() - 1);
m_connections = connections;
endInsertRows();
}
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