SingleSelectionListDialog.h

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/*
 * Copyright (C) 2012 by
 *   MetraLabs GmbH (MLAB), GERMANY
 * and
 *   Neuroinformatics and Cognitive Robotics Labs (NICR) at TU Ilmenau, GERMANY
 * All rights reserved.
 *
 * Contact: info@mira-project.org
 *
 * Commercial Usage:
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 *   a written agreement between you and MLAB or NICR.
 *
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 *   Foundation and appearing in the file LICENSE.GPL3 included in the
 *   packaging of this file. Please review the following information to
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#include <QLabel>
#include <QLineEdit>

#include <widgets/SelectionListDialog.h>
#include <widgets/SignalBinder.h>

#ifndef _MIRA_SINGLESELECTIONLISTDIALOG_H_
#define _MIRA_SINGLESELECTIONLISTDIALOG_H_

namespace mira {


template <typename T>
class SingleSelectionListDialog : public SelectionListDialog<T>
{
public:

    SingleSelectionListDialog(QWidget* parent=0);

public:

    void setMultiSelection(bool enable) {
        static_assert(sizeof(T)==0, "setMultipleSelection not supported for SingleSelectionListDialog");
    }

    std::pair<QString, T> selectedItem() const;

    bool hasSelection() const;

private:

    void onSelectionChanged();

private:
    QLineEdit* mNameField;
    SignalBinder* mSignalBinder;
};


template <typename T>
inline SingleSelectionListDialog<T>::SingleSelectionListDialog(QWidget* parent) :
        SelectionListDialog<T>(parent)
{
    QHBoxLayout* layout = new QHBoxLayout;
    this->mAdditionalContentLayout->addLayout(layout);
    QLabel* label = new QLabel(this->tr("Name:"),this);
    layout->addWidget(label);

    mNameField = new QLineEdit(this);
    layout->addWidget(mNameField);

    mSignalBinder = new SignalBinder(this);
    mSignalBinder->bind(
            boost::bind(&SingleSelectionListDialog::onSelectionChanged,this));
    this->connect(
            this->mTreeWidget, SIGNAL(itemSelectionChanged()), mSignalBinder,
            SLOT(slot()));
}

template <typename T>
inline std::pair<QString, T> SingleSelectionListDialog<T>::selectedItem() const {
    if(!hasSelection())
        MIRA_THROW(XLogical, "No item selected");
    return std::make_pair(mNameField->text(), this->selectedItems().begin()->second);
}

template <typename T>
inline bool SingleSelectionListDialog<T>::hasSelection() const {
    return !this->selectedItems().empty();
}

template <typename T>
inline void SingleSelectionListDialog<T>::onSelectionChanged()
{
    auto selection = this->selectedItems();
    if(selection.empty())
        mNameField->setText("");
    else
        mNameField->setText(selection.begin()->first);
}


}

#endif