scenariomodel.cpp

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/*
 * This file is part of ArmarX.
 *
 * Copyright (C) 2011-2016, High Performance Humanoid Technologies (H2T), Karlsruhe Institute of Technology (KIT), all rights reserved.
 *
 * ArmarX is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * ArmarX is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 * @package    ArmarXCore::core
 * @author     Cedric Seehausen (usdnr at kit dot edu)
 * @date       2016
 * @copyright  http://www.gnu.org/licenses/gpl-2.0.txt
 *             GNU General Public License
 */
 
 
#include "scenariomodel.h"
 
#include <QColor>
#include <QDataStream>
#include <QIODevice>
#include <QMimeData>
#include <QStringList>
#include <QtGlobal>
 
#include <ArmarXCore/core/exceptions/local/ExpressionException.h>
#include <ArmarXCore/core/logging/Logging.h>
 
using namespace ScenarioManager;
using namespace Data_Structure;
using namespace armarx;
 
ScenarioModel::ScenarioModel()
{
    rootItem =
        new ScenarioItem(QList<QVariant>({"Scenarios", "Start", "Stop", "Restart", "Status"}));
}
 
QVariant
ScenarioModel::data(const QModelIndex& index, int role) const
{
    if (!index.isValid())
    {
        return QVariant();
    }
 
    if (role == Qt::ForegroundRole)
    {
        ApplicationInstancePtr instance =
            static_cast<ScenarioItem*>(index.internalPointer())->getApplicationInstance();
        if (instance.get() != nullptr && !instance->getEnabled())
        {
            return QColor(Qt::lightGray);
        }
        if (index.column() == 4)
        {
            if (index.data().toString().toStdString() == ApplicationStatus::Missing)
            {
                return QColor(Qt::lightGray);
            }
            else if (index.data().toString().toStdString() == ApplicationStatus::Running)
            {
                return QColor(Qt::green);
            }
            else if (index.data().toString().toStdString() == ApplicationStatus::Stopped)
            {
                return QColor(Qt::red);
            }
            else if (index.data().toString().toStdString() == ApplicationStatus::Inactive)
            {
                return QColor(Qt::gray);
            }
            else if (index.data().toString().toStdString() == ApplicationStatus::Mixed)
            {
                return QColor(Qt::darkYellow);
            }
            else if (index.data().toString().toStdString() == ApplicationStatus::Waiting)
            {
                return QColor(Qt::blue);
            }
            else
            {
                return QColor(Qt::black);
            }
        }
    }
    else if (role == Qt::ToolTipRole)
    {
        const QAbstractItemModel* model = index.model();
        QString appName =
            model->data(model->index(index.row(), 0, index.parent()), Qt::DisplayRole).toString();
 
        if (index.column() == 1)
        {
            return QVariant(QString("Start ") + appName);
        }
        else if (index.column() == 2)
        {
            return QVariant(QString("Stop ") + appName);
        }
        else if (index.column() == 3)
        {
            return QVariant(QString("Restart ") + appName);
        }
    }
    else if (role == SCENARIOITEMSOURCE)
    {
        return QVariant::fromValue(reinterpret_cast<ScenarioItem*>(index.internalPointer()));
    }
    else if (role == SCENARIOITEMPENDINGINTENT)
    {
        return QVariant(
            static_cast<int>(static_cast<ScenarioItem*>(index.internalPointer())->getPendingIntent()));
    }
    else if (role != Qt::DisplayRole)
    {
        return QVariant();
    }
 
    ScenarioItem* item = static_cast<ScenarioItem*>(index.internalPointer());
    return item->data(index.column());
}
 
void
ScenarioModel::clear()
{
    delete rootItem;
    rootItem =
        new ScenarioItem(QList<QVariant>({"Scenarios", "Start", "Stop", "Restart", "Status"}));
    reset();
}
 
Qt::DropActions
ScenarioModel::supportedDropActions() const
{
    return Qt::CopyAction;
}
 
Qt::ItemFlags
ScenarioModel::flags(const QModelIndex& index) const
{
    Qt::ItemFlags defaultFlags = QAbstractItemModel::flags(index);
 
    //    if (index.data().toString().compare("Start") == 0 && !index.parent().isValid())
    //    {
    //        return Qt::ItemIsDropEnabled | Qt::ItemIsEditable | Qt::ItemIsUserCheckable | defaultFlags;
    //    }
 
    return Qt::ItemIsDropEnabled | defaultFlags;
}
 
QStringList
ScenarioModel::mimeTypes() const
{
    QStringList types;
    types << "application/pointer";
    return types;
}
 
bool
ScenarioModel::dropMimeData(const QMimeData* data,
                            Qt::DropAction action,
                            int row,
                            int column,
                            const QModelIndex& parent)
{
    if (action == Qt::IgnoreAction)
    {
        return true;
    }
 
    if (!data->hasFormat("application/pointer"))
    {
        return false;
    }
 
    if (column > 0)
    {
        return false;
    }
 
    //    int beginRow;
 
    //    if (row != -1)
    //        beginRow = row;
    //    else if (parent.isValid())
    //        beginRow = parent.row();
    //    else
    //        beginRow = rowCount(QModelIndex());
 
    QByteArray encodedData = data->data("application/pointer");
    QDataStream stream(&encodedData, QIODevice::ReadOnly);
    QList<QPair<QString, ScenarioManager::Data_Structure::Application*>> result;
    int rows = 0;
 
    while (!stream.atEnd())
    {
        quint64 holder;
        QString instanceName;
        stream >> holder >> instanceName;
 
        if (holder == 0)
        {
            continue;
        }
        result << qMakePair(instanceName,
                            reinterpret_cast<Data_Structure::Application*>(holder)); //
        ++rows;
    }
 
    emit applicationsDrop(result, row, parent);
    return true;
}
 
void
ScenarioModel::update()
{
    updateSubtree(getRootItem(), QModelIndex());
}
 
void
ScenarioModel::updateSubtree(ScenarioItem* item, const QModelIndex& itemIndex)
{
    const int rows = item->childCount();
 
    // Bottom-up: a child is fully updated before its parent, so package items can aggregate the
    // status of their children in the same pass.
    std::vector<bool> childChanged(rows, false);
    for (int row = 0; row < rows; row++)
    {
        ScenarioItem* child = static_cast<ScenarioItem*>(item->child(row));
        updateSubtree(child, index(row, 0, itemIndex));
        childChanged[row] = child->update();
    }
 
    // The previous implementation emitted a single dataChanged() spanning the top level rows only.
    // A range like that carries no repaint obligation for the rows *below* those items, so an
    // application whose status changed could keep its stale text on screen until something else
    // happened to repaint it. Signal the rows that actually changed instead, at their own depth.
    //
    // Contiguous rows are coalesced into one emission because each one makes the view re-evaluate
    // filters and re-layout the affected sections.
    const int lastColumn = columnCount() - 1;
    int rangeBegin = -1;
    for (int row = 0; row <= rows; row++)
    {
        const bool changed = row < rows && childChanged[row];
        if (changed && rangeBegin < 0)
        {
            rangeBegin = row;
        }
        else if (!changed && rangeBegin >= 0)
        {
            emit dataChanged(index(rangeBegin, 0, itemIndex),
                             index(row - 1, lastColumn, itemIndex));
            rangeBegin = -1;
        }
    }
}
 
ScenarioItem*
ScenarioModel::getRootItem()
{
    return static_cast<ScenarioItem*>(rootItem);
}
 
ScenarioItem*
ScenarioModel::FindScenario(const QAbstractItemModel* model, const QString& scenarioName)
{
    ARMARX_CHECK_EXPRESSION(!scenarioName.isEmpty());
    for (int i = 0; i < model->rowCount(); ++i)
    {
        auto index = model->index(i, 0);
        auto currentScenarioName = index.data().toString();
        if (currentScenarioName == scenarioName)
        {
            return index.data(SCENARIOITEMSOURCE).value<ScenarioItem*>();
            break;
        }
    }
    return NULL;
}
 
int
ScenarioModel::FindScenarioIndex(const QAbstractItemModel* model, const QString& scenarioName)
{
    ARMARX_CHECK_EXPRESSION(!scenarioName.isEmpty());
    for (int i = 0; i < model->rowCount(); ++i)
    {
        auto index = model->index(i, 0);
        auto currentScenarioName = index.data().toString();
        if (currentScenarioName == scenarioName)
        {
            return i;
            break;
        }
    }
    return -1;
}