Hi everybody,

I'm currently busy playing with QAbstractItemModels and QItemDelegates.
This is de situation, I have a column warrenty date ("Geleverd op") and that's a date field in side my model, so I installed a QItemDelegate on a column QItemDelegate::setDelegateForColumn();

EDIT: I changed it to setItemDelegate for testing purpose!
But it doesn't work, it constructs the delegate but he doesn't use the delegate....

this is the code were I set the delegate:
Qt Code: 
  1. void OrderAddWindow::setTable()
  2. {
  3. 	qDebug("OrderAddWindow::setTable(): Loading table and model");
  4.  
  5. 	QStringList header;
  6. 	QList<QStringList> articleList;
  7.  
  8. 	header << "Artikel nr" << "Beschrijving" << "Bewerking" << "Prijs" << "Besteld" << "Geleverd" << "Geleverd op";
  9.  
  10.  
  11. 	model = new ArticlesAddTableModel( articleList , header);
  12. 	this->tableArticles->setModel(model);
  13. 	this->tableArticles->setItemDelegate(new DateDelegate(this->tableArticles));
  14.  
  15. }
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This is de delegate code:
Qt Code: 
  1. #include "dateDelegate.h"
  2. #include <QtGui>
  3.  
  4. DateDelegate::DateDelegate(QObject *parent)
  5. : QItemDelegate(parent)
  6. {	
  7. 	qDebug("DateDelegate::DateDelegate():Constructing delegate");
  8. }
  9.  
  10. QWidget* DateDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem& option, const QModelIndex& index)
  11. {
  12. 	qDebug("DateDelegate::createEditor(): Creating delegate widget");
  13. 	//create the view for the item
  14. 	const QAbstractItemModel *model = index.model();
  15.  
  16. 	if(!model)
  17. 		QItemDelegate::createEditor(parent, option, index);
  18.  
  19. 	QDateEdit *edit = new QDateEdit(parent);
  20. 	edit->setDisplayFormat("dd-MM-yyyy");
  21. 	return edit;
  22. }
  23.  
  24. void DateDelegate::setEditorData(QWidget *editor, const QModelIndex& index)
  25. {
  26. 	qDebug("DateDelegate::setEditorDate(): Set data");
  27. 	QDateEdit *edit = qobject_cast<QDateEdit*>(editor);
  28.  
  29. 	if(!edit)
  30. 		QItemDelegate::setEditorData(editor, index);
  31. 	edit->setDate(QDate::currentDate());
  32.  
  33. }
  34.  
  35. void DateDelegate::setModelData(QWidget *parent, QAbstractItemModel *model, const QModelIndex& index)
  36. {
  37. 	qDebug("DateDelegate::setModelData(): Set data in model");
  38.  
  39. }
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and this is de model code and the subclass of the model
Qt Code: 
  1. #include "articlesTableModel.h"
  2. #include <QtGui>
  3.  
  4.  
  5. ArticlesTableModel::ArticlesTableModel(const QList<QStringList> &data, const QStringList &header, QObject *parent)
  7. {
  8. 	qDebug("ArticlesTableModel::ArticlesTableModel(): Constructing the table model");
  9. 	this->articles = data;
  10. 	this->header = header;
  11. }
  12.  
  13.  
  14. int ArticlesTableModel::rowCount( const QModelIndex& parent) const
  15. {
  16. 	Q_UNUSED(parent);
  17. 	return articles.count();
  18. }
  19.  
  20. int ArticlesTableModel::columnCount( const QModelIndex& parent) const
  21. {
  22. 	Q_UNUSED(parent);
  23. 	return header.count();
  24. }
  25.  
  26. QVariant ArticlesTableModel::headerData(int section, Qt::Orientation orientation, int role) const
  27. {
  28. 	if( Qt::Horizontal == orientation)
  29. 	{
  30. 		if(Qt::DisplayRole == role)
  31. 		{
  32. 			return header.at(section);
  33. 		}
  34. 	}
  35.  
  36. 	return QAbstractTableModel::headerData(section, orientation, role);
  37. }
  38.  
  39. QVariant ArticlesTableModel::data(const QModelIndex &index, int role) const
  40. {	
  41.  
  42. 	if(!index.isValid())
  43. 		return QVariant();
  44.  
  45. 	QStringList record = this->articles.at(index.row());
  46.  
  47. 	if(role == Qt::DisplayRole || role == Qt::EditRole){
  48.  
  49. 		return record.at(index.column());
  50.  
  51. 	}
  52.  
  53. 	return QVariant();
  54.  
  55. }
  56.  
  57. Qt::ItemFlags ArticlesTableModel::flags(const QModelIndex &index) const
  58. {
  59. 	if(!index.isValid())
  60. 		return 0;
  61.  
  62. 	return QAbstractTableModel::flags(index) | Qt::ItemIsEditable;
  63. }
  64.  
  65.  
  66. bool ArticlesTableModel::setData(const QModelIndex& index, const QVariant& value, int role)
  67. {
  68. 	if(index.isValid() && (role == Qt::DisplayRole || role == Qt::EditRole)){
  69. 	   this->articles[index.row()][index.column()] = value.toString();
  70. 	   emit dataChanged(index, index);
  71. 	   return true;
  72. 	}
  73.  
  74. 	return false;
  75. }
  76.  
  77. bool ArticlesTableModel::insertRows(int row, int count, const QModelIndex &parent)
  78. {
  79. 	Q_UNUSED(parent);
  80. 	QStringList emptyRecord;
  81. 	for(int i = 0; i < columnCount(QModelIndex()); i++)
  82. 		emptyRecord.append(QString());
  83. 	beginInsertRows(QModelIndex(), row, row+count-1);
  84. 	for(int i = 0; i < count; i++){
  85. 		this->articles.insert(row, emptyRecord);
  86. 	}
  87. 	endInsertRows();
  88.  
  89. 	return true;
  90. }
  91.  
  92. bool ArticlesTableModel::removeRows(int row, int count, const QModelIndex &parent)
  93. {
  94. 	Q_UNUSED(parent);
  95. 	if(row-count-1 > this->articles.count() -1) return false;
  96. 	beginRemoveRows(QModelIndex(), row, row+count-1);
  97. 	for(int i=0; i<count; i++)
  98. 		this->articles.removeAt(row);
  99. 	endRemoveRows();
  100. 	return true;
  101.  
  102. }
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Qt Code: 
  1. #include "ArticlesAddTableModel.h"
  2. #include <QtGui>
  3.  
  4.  
  5. ArticlesAddTableModel::ArticlesAddTableModel(const QList<QStringList> &data, const QStringList &header, QObject *parent)
  6. : ArticlesTableModel(data, header, parent)
  7. {
  8. 	qDebug("ArticlesAddTableModel::ArticlesAddTableModel(): Constructing the add table model");
  9. }
  10.  
  11. QList<QStringList> ArticlesAddTableModel::retreiveData()
  12. {
  13. 	return this->articles;
  14. }
  15.  
  16.  
  17. void ArticlesAddTableModel::removeRow()
  18. {
  19. 	qDebug("ArticlesAddTableModel::removeRow(): Remove row from model");
  20. 	this->removeRows(rowCount(QModelIndex()) - 1, 1, QModelIndex());
  21. }
  22.  
  23. void ArticlesAddTableModel::addRow()
  24. {
  25.  
  26. 	qDebug("ArticlesAddTableModel::addRow(): Add an empty row to model");
  27.  
  28. 	insertRows(rowCount(QModelIndex()), 1, QModelIndex());
  29. }
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Does somebody know how to trigger createEditor() in the QItemDelegate?

Greetings,

Cyberboy