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/*============================================================================
**
**  Project/Product : 
**  Filename        : textdelegate.h
**  Author(s)       : DDP
**
**  Description     : A delgated widget to assist in the editing of text items
**                    within a table
**
**
***==========================================================================*/
#include <QtGui>
#include "textdelegate.h"

/*----------------------------------------------------------------------------
** FUNCTION           : textDelegate
**
** DESCRIPTION        : Construct a new object
**
**                      A delegate that allows the user to change text
**                      values from the model using a lineEditor widget.
**
** INPUTS             : maxlen      - Max length of text allowed
**                      parent      - Parent object
**
** RETURNS            :
**
----------------------------------------------------------------------------*/

textDelegate::textDelegate(int maxlen, QObject *parent)
    : QItemDelegate(parent)
{
    max_len = maxlen;
}

/*----------------------------------------------------------------------------
** FUNCTION           : createEditor
**
** DESCRIPTION        : Create an editor widget
**
**
** INPUTS             : parent
**                      option
**                      index
**
** RETURNS            : A QLineEdit widget
**
----------------------------------------------------------------------------*/

QWidget *textDelegate::createEditor(QWidget *parent,
    const QStyleOptionViewItem &/* option */,
    const QModelIndex &/* index */) const
{
    QLineEdit *editor = new QLineEdit(parent);
    editor->setMaxLength(max_len);

    return editor;
}

/*----------------------------------------------------------------------------
** FUNCTION           : setEditorData
**
** DESCRIPTION        : Inserts model data into the editor widget
**
**
** INPUTS             : editor      - Ref to editor widget
**                      index       -
**
** RETURNS            :
**
----------------------------------------------------------------------------*/

void textDelegate::setEditorData(QWidget *editor,
                                    const QModelIndex &index) const
{
    QString value = index.model()->data(index, Qt::EditRole).toString();

    QLineEdit *lineEditor = static_cast<QLineEdit*>(editor);
    lineEditor->setText(value);
}

/*----------------------------------------------------------------------------
** FUNCTION           : setModelData
**
** DESCRIPTION        : Extract data from the editor widget and update the model
**
**
** INPUTS             : editor      - Target widget
**                      model       - Current model
**                      index       - Index into model
**
** RETURNS            :
**
----------------------------------------------------------------------------*/

void textDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
                                   const QModelIndex &index) const
{
    QLineEdit *lineEdit = static_cast<QLineEdit*>(editor);
    QString value = lineEdit->text();

    model->setData(index, value, Qt::EditRole);
}

/*----------------------------------------------------------------------------
** FUNCTION           : updateEditorGeometry
**
** DESCRIPTION        : Updates the geometry of the editor widget
**
**
** INPUTS             : editor      - Target widget
**                      option      -
*                       index
**
** RETURNS            :
**
----------------------------------------------------------------------------*/

void textDelegate::updateEditorGeometry(QWidget *editor,
    const QStyleOptionViewItem &option, const QModelIndex &/* index */) const
{
    editor->setGeometry(option.rect);
}