KissCount/src/view/grid/TabDelegate.cpp

/*
  Copyright 2010-2012 Grégory Soutadé

  This file is part of KissCount.

  KissCount is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  KissCount 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 KissCount.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <QtGui>
#include <QString>
#include <QtWidgets>

#include "TabDelegate.hpp"

QWidget * TabDelegate::createEditor (QWidget * parent, const QStyleOptionViewItem & option, const QModelIndex & index ) const
{
    QLineEdit* lineEdit = new QLineEdit(parent);

    if (_completer)
    	lineEdit->setCompleter(_completer);

    return lineEdit;
}

void TabDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
				  const QModelIndex &index) const
{
    QLineEdit *line = qobject_cast<QLineEdit *>(editor);
    QString value = line->text().trimmed();

    if (index.row() < (int) _operations->size() && (*_operations)[index.row()].id && 
    	(*_operations)[index.row()].parent)
    	model->setData(index, qVariantFromValue("    " + value));
    else
    	model->setData(index, qVariantFromValue(value));
}

void TabDelegate::setEditorData(QWidget *editor,
				 const QModelIndex &index) const
{
    QLineEdit* line = qobject_cast<QLineEdit *>(editor);
    QString s = index.data().toString();

    line->setText(s.trimmed());
}

/*
 Implement editorEvent due to a "feature" in Qt : If we have a QLineEdit with a completer
 and we press a key on a non edited cell, editor immediatly returns (it's perhaps a focus
 problem)
 */
bool TabDelegate::editorEvent ( QEvent * event, QAbstractItemModel * model, const QStyleOptionViewItem & option, const QModelIndex & index )
{
    if (event->type() == QEvent::KeyPress && _completer)
    {
	QTableWidgetItem* item = _grid->item(index.row(), index.column());
	if (item->text() == "")
	{
	    _grid->editItem(item);
	    QLineEdit* line = qobject_cast<QLineEdit *>(_grid->cellWidget(index.row(), index.column()));
	    QKeyEvent* kevent = dynamic_cast<QKeyEvent *> (event);
	    line->setText(kevent->text());
	    _completer->setCompletionPrefix(kevent->text());
	    _completer->complete();
	    return true;
	}
    }

    return false;
}