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/*
modelcellmodel.cpp
This file is part of GammaRay, the Qt application inspection and manipulation tool.
SPDX-FileCopyrightText: 2010 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 "modelcellmodel.h"
#include <compat/qasconst.h>
#include <core/varianthandler.h>
#include <QAbstractProxyModel>
using namespace GammaRay;
ModelCellModel::ModelCellModel(QObject *parent)
: QAbstractTableModel(parent)
{
}
static bool sourceIsQQmlListModel(const QAbstractItemModel *model)
{
Q_ASSERT(model);
while (auto proxy = qobject_cast<const QAbstractProxyModel *>(model))
model = proxy->sourceModel();
return model->inherits("QQmlListModel");
}
void ModelCellModel::setModelIndex(const QModelIndex &idx)
{
const auto newRoles = rolesForModel(idx.model());
if (newRoles != m_roles) {
if (!m_roles.isEmpty()) {
beginRemoveRows(QModelIndex(), 0, m_roles.size() - 1);
m_roles.clear();
endRemoveRows();
}
m_index = idx;
if (!newRoles.isEmpty()) {
beginInsertRows(QModelIndex(), 0, newRoles.size() - 1);
m_roles = newRoles;
endInsertRows();
}
} else {
m_index = idx;
if (!m_roles.isEmpty()) {
emit dataChanged(index(0, 1), index(rowCount() - 1, 1));
}
}
}
QVector<ModelCellModel::RoleInfo> ModelCellModel::rolesForModel(const QAbstractItemModel *model)
{
QVector<RoleInfo> roles;
if (!model)
return roles;
// add built-in roles
const auto hasDefaultRoles = !sourceIsQQmlListModel(model);
if (hasDefaultRoles) {
#define R(x) qMakePair<int, QString>(x, QStringLiteral(#x))
roles << R(Qt::DisplayRole)
<< R(Qt::DecorationRole)
<< R(Qt::EditRole)
<< R(Qt::ToolTipRole)
<< R(Qt::StatusTipRole)
<< R(Qt::WhatsThisRole)
<< R(Qt::FontRole)
<< R(Qt::TextAlignmentRole)
<< R(Qt::BackgroundRole)
<< R(Qt::ForegroundRole)
<< R(Qt::CheckStateRole)
<< R(Qt::AccessibleTextRole)
<< R(Qt::AccessibleDescriptionRole)
<< R(Qt::SizeHintRole)
<< R(Qt::InitialSortOrderRole);
#undef R
}
// add custom roles
const auto roleNames = model->roleNames();
for (auto it = roleNames.constBegin(); it != roleNames.constEnd(); ++it) {
bool roleFound = false;
for (const auto &role : qAsConst(roles)) {
if (role.first == it.key()) {
roleFound = true;
break;
}
}
if (!roleFound) {
const auto &name = it.value().isEmpty() ? tr("Role #%1").arg(it.key()) : QString::fromLatin1(it.value());
roles.push_back(qMakePair(it.key(), name));
}
}
std::sort(roles.begin(), roles.end(), [](const RoleInfo &lhs, const RoleInfo &rhs) { return lhs.first < rhs.first; });
return roles;
}
QVariant ModelCellModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid())
return QVariant();
Q_ASSERT(index.row() < m_roles.size());
const QVariant value = m_index.data(m_roles.at(index.row()).first);
if (role == Qt::DisplayRole) {
switch (index.column()) {
case 0:
return m_roles.at(index.row()).second;
case 1:
return VariantHandler::displayString(value);
case 2:
return value.typeName();
}
} else if (role == Qt::EditRole) {
if (index.column() == 1)
return value;
} else if (role == Qt::DecorationRole && index.column() == 1) {
return VariantHandler::decoration(value);
}
return QVariant();
}
bool ModelCellModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
if (index.isValid() && m_index.isValid()
&& (m_index.flags() & Qt::ItemIsEditable)
&& role == Qt::EditRole && index.column() == 1) {
const Qt::ItemDataRole sourceRole = static_cast<Qt::ItemDataRole>(m_roles.at(index.row()).first);
QAbstractItemModel *sourceModel = const_cast<QAbstractItemModel *>(m_index.model());
return sourceModel->setData(m_index, value, sourceRole);
}
return QAbstractItemModel::setData(index, value, role);
}
Qt::ItemFlags ModelCellModel::flags(const QModelIndex &index) const
{
Qt::ItemFlags flags = QAbstractTableModel::flags(index);
if (index.isValid() && m_index.isValid() && index.column() == 1) {
if (m_index.flags() & Qt::ItemIsEditable)
return flags | Qt::ItemIsEditable;
}
return flags;
}
int ModelCellModel::columnCount(const QModelIndex &parent) const
{
if (parent.isValid())
return 0;
return 3;
}
int ModelCellModel::rowCount(const QModelIndex &parent) const
{
if (parent.isValid() || !m_index.isValid())
return 0;
return m_roles.size();
}
QVariant ModelCellModel::headerData(int section, Qt::Orientation orientation, int role) const
{
if (role == Qt::DisplayRole && orientation == Qt::Horizontal) {
switch (section) {
case 0:
return tr("Role");
case 1:
return tr("Value");
case 2:
return tr("Type");
}
}
return QAbstractItemModel::headerData(section, orientation, role);
}
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