Results 1 to 8 of 8

Thread: QItemDelegate, QDataWidgetMapper and QComboBox

Threaded View

Previous Post Previous Post   Next Post Next Post
  1. 8th April 2009, 12:04 #1
    cydside
    cydside is offline Intermediate user
    Join Date
    Jun 2008
    Location
    Rome, Italy
    Posts
    95
    Thanks
    19
    Thanked 2 Times in 2 Posts
    Qt products
    Qt4 Qt5
    Platforms
    MacOS X Unix/X11 Windows

    Default QItemDelegate, QDataWidgetMapper and QComboBox

    Hi to all,
    I'm using a QDialog to edit data from QSqlTableModel through QDataWidgetMapper. Now I've a record field integer that can take only five values but I need to code in text those values and use a QComboBox to do it. So I've thought to implement a QItemDelegate following the example demos/spreadsheet/main.cpp that came with QAssistant but it doesn't work

    The attachment is a Snapshot about the Qdialog.

    The following code to attempt an explanation :

    frmCategorie_AME.h
    Qt Code: 
    1. #ifndef FRMCATEGORIE_AME_H
    2. #define FRMCATEGORIE_AME_H
    3.  
    4. #include <QtGui>
    5. #include <QtSql>
    6.  
    7. #include "ui_frmCategorie_AME.h"
    8. #include "ComboBoxDelegate.h"
    9.  
    10. class frmCategorie_AME : public QDialog
    11. {
    12.   Q_OBJECT
    13.  
    14. public:
    15.   frmCategorie_AME(QSqlTableModel *model, const int &isItNew, QWidget *parent=0);
    16.  
    17. private slots:
    18.    void revert();
    19.    void submit();
    20.  
    21. private:
    22.    Ui::frmCategorie_AME ui;
    24.    QSqlTableModel *modelAME;
    25.    int id;
    26.    ComboBoxDelegate boxEU;
    27. };
    28.  
    29. #endif // FRMCATEGORIE_AME_H
    To copy to clipboard, switch view to plain text mode 

    frmCategorie_AME.cpp
    Qt Code: 
    1. #include "frmCategorie_AME.h"
    2.  
    3. /*----------------------------------------------------------------------------*/
    4.  
    5. frmCategorie_AME::frmCategorie_AME(QSqlTableModel *model, const int &isItNew,
    6.    QWidget *parent) : QDialog(parent)
    7. {
    8.    ui.setupUi(this);
    9.    this->setWindowFlags(Qt::Dialog | Qt::MSWindowsFixedSizeDialogHint);
    10.    this->setAttribute(Qt::WA_DeleteOnClose);
    11.  
    12.    modelAME = new QSqlTableModel(this);
    13.    modelAME = model;
    14.  
    15.    modelAME->database().transaction();
    16.  
    17.    if (isItNew < 0)
    18.    {
    19.       id = modelAME->rowCount();
    20.       modelAME->insertRow(id);
    21.    }
    22.    else
    23.    {
    24.       id = isItNew;
    25.    }
    26.  
    27.    mapper = new QDataWidgetMapper(this);
    28.    mapper->setModel(modelAME);
    29.    mapper->setSubmitPolicy(QDataWidgetMapper::ManualSubmit);
    30.    mapper->addMapping(ui.lneDescrizione, 1);
    31.    mapper->addMapping(ui.cboText, 2);
    32.    mapper->setCurrentIndex(id);
    33.  
    34.    ui.cboText->setItemDelegate(&boxEU);
    35.  
    36.    connect(ui.btnAnnulla, SIGNAL(clicked()), this, SLOT(revert()));
    37.    connect(ui.btnOk, SIGNAL(clicked()), this, SLOT(submit()));
    38.  
    39.    qDebug() << "frmCategorie_AME Loaded!";
    40. }
    41.  
    42. /*----------------------------------------------------------------------------*/
    43.  
    44. void frmCategorie_AME::revert()
    45. {
    46.    mapper->revert();
    47.    qDebug() << "->frmCategorie_AME Aggiunta Rifiutata!";
    48.    modelAME->revertAll();
    49.    modelAME->database().rollback();
    50.  
    51.    qDebug() << "frmAME closed!";
    52. }
    53.  
    54. /*----------------------------------------------------------------------------*/
    55.  
    56. void frmCategorie_AME::submit()
    57. {
    58.    if (mapper->submit())
    59.    {
    60.       mapper->setCurrentIndex(id);
    61.       qDebug() << "Ok submit!";
    62.  
    63.       if (modelAME->submitAll())
    64.       {
    65.          modelAME->database().commit();
    66.          qDebug() << "Valore eliminato!";
    67.       }
    68.       else
    69.       {
    70.          modelAME->revertAll();
    71.          modelAME->database().rollback();
    72.          QMessageBox::warning(this, tr("Attenzione!"),
    73.             tr("Il database ha riportato un errore: %1")
    74.             .arg(modelAME->lastError().text()));
    75.       }
    76.    }
    77.    else
    78.    {
    79.       qDebug() << "No submit!";
    80.       QMessageBox::warning(this, tr("Attenzione!"),
    81.          tr("Il database ha riportato un errore: %1")
    82.          .arg(modelAME->lastError().text()));
    83.    }
    84. }
    To copy to clipboard, switch view to plain text mode 

    ComboBoxDelegate.h
    Qt Code: 
    1. #ifndef COMBOBOXDELEGATE_H
    2. #define COMBOBOXDELEGATE_H
    3.  
    4. #include <QtGui>
    5.  
    6. class ComboBoxDelegate: public QItemDelegate
    7. {
    8.    public:
    9.       ComboBoxDelegate(QObject *parent = 0);
    10.       QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &,
    11.          const QModelIndex &index) const;
    12.       void setEditorData(QWidget *editor, const QModelIndex &index) const;
    13.       void setModelData(QWidget *editor, QAbstractItemModel *model,
    14.       const QModelIndex &index) const;
    15.  
    16.    private slots:
    17.       void commitAndCloseEditor();
    18. };
    19.  
    20. #endif /* COMBOBOXDELEGATE_H */
    To copy to clipboard, switch view to plain text mode 

    ComboBoxDelegate.cpp

    Qt Code: 
    1. #include "ComboBoxDelegate.h"
    2.  
    3. /*----------------------------------------------------------------------------*/
    4.  
    5. ComboBoxDelegate::ComboBoxDelegate(QObject *parent)
    6.    : QItemDelegate(parent)
    7. {
    8.    qDebug() << "ComboBoxDelegate Costruttore";
    9.  
    10. }
    11.  
    12. /*----------------------------------------------------------------------------*/
    13.  
    14. QWidget *ComboBoxDelegate::createEditor(QWidget *parent,
    15.    const QStyleOptionViewItem&, const QModelIndex &index) const
    16. {
    17.    QComboBox *editor = new QComboBox(parent);
    18.    editor->addItem("Green", 0);
    19.    editor->addItem("Red", 1);
    20.    editor->addItem("Yellow", 2);
    21.    editor->addItem("Blue", 3);
    22.    editor->addItem("Magenta", 4);
    23.    editor->setCurrentIndex(0);
    24.    return editor;
    25. }
    26.  
    27. /*----------------------------------------------------------------------------*/
    28.  
    29. void ComboBoxDelegate::commitAndCloseEditor()
    30. {
    31.  
    32.    QComboBox *editor = qobject_cast<QComboBox *>(sender());
    33.    emit commitData(editor);
    34.    emit closeEditor(editor);
    35.  
    36. }
    37.  
    38. /*----------------------------------------------------------------------------*/
    39.  
    40. void ComboBoxDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const
    41. {
    42.    QComboBox *edit = qobject_cast<QComboBox *>(editor);
    43.    int value = index.model()->data(index, Qt::EditRole).toInt();
    44.    edit->setCurrentIndex(value);
    45.  
    46. }
    47.  
    48. /*----------------------------------------------------------------------------*/
    49.  
    50. void ComboBoxDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
    51. const QModelIndex &index) const
    52. {
    53.    QComboBox *edit = qobject_cast<QComboBox *>(editor);
    54.    model->setData(index, edit->itemData(edit->currentIndex()));
    55. }
    To copy to clipboard, switch view to plain text mode 

    Thanks in advance!
    Attached Images Attached Images
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Similar Threads

  1. QDataWidgetMapper and QComboBox
    By mazurekwrc in forum Qt Programming
    Replies: 0
    Last Post: 31st March 2009, 13:02
  2. QDataWidgetMapper and QCombobox
    By miraks in forum Qt Programming
    Replies: 4
    Last Post: 6th December 2008, 17:53
  3. QComboBox QSqlQueryModel & relation.
    By matheww in forum Qt Programming
    Replies: 2
    Last Post: 20th June 2007, 04:56
  4. QDataWidgetMapper <=> QComboBox best practice
    By saknopper in forum Qt Programming
    Replies: 1
    Last Post: 18th January 2007, 10:50

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules

Digia, Qt and their respective logos are trademarks of Digia Plc in Finland and/or other countries worldwide.