ComboDelegate Class Reference

Item delegate that edits a cell using a QComboBox populated from Qt::UserRole. More...

#include <dbselectView.h>

Public Member Functions
	ComboDelegate (QObject *parent=nullptr)
	Construct the delegate.
QWidget *	createEditor (QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const override
	Create a QComboBox editor for the given cell.
void	setEditorData (QWidget *editor, const QModelIndex &index) const override
	Populate the editor from the model.
void	setModelData (QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const override
	Write the selected editor value back to the model.
void	updateEditorGeometry (QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const override
	Position the editor within the cell rectangle.

Detailed Description

The model is expected to store a QStringList in Qt::UserRole for the edited index. The delegate uses that list to populate the combo box and writes the selected value back to Qt::EditRole.

Definition at line 300 of file dbselectView.h.

Constructor & Destructor Documentation

ComboDelegate()

ComboDelegate::ComboDelegate ( QObject * parent = nullptr )

inlineexplicit

Parameters

parent

Optional Qt parent object.

Definition at line 307 of file dbselectView.h.

Member Function Documentation

createEditor()

QWidget * ComboDelegate::createEditor ( QWidget * parent, const QStyleOptionViewItem & option, const QModelIndex & index ) const

inlineoverride

The editor is created empty; content is populated in setEditorData().

Parameters

parent	Parent widget for the editor.
option	Style options (unused).
index	Model index (unused).

Returns

Newly created editor widget.

Definition at line 319 of file dbselectView.h.

setEditorData()

void ComboDelegate::setEditorData ( QWidget * editor, const QModelIndex & index ) const

inlineoverride

Reads Qt::UserRole as a QStringList, fills the combo box, and selects the current value from Qt::EditRole (if present).

Parameters

editor	Editor widget previously created by createEditor().
index	Model index being edited.

Definition at line 337 of file dbselectView.h.

setModelData()

void ComboDelegate::setModelData ( QWidget * editor, QAbstractItemModel * model, const QModelIndex & index ) const

inlineoverride

The selected text is assigned to Qt::EditRole.

Parameters

editor	Editor widget.
model	Model to update.
index	Model index being edited.

Definition at line 364 of file dbselectView.h.

updateEditorGeometry()

void ComboDelegate::updateEditorGeometry ( QWidget * editor, const QStyleOptionViewItem & option, const QModelIndex & index ) const

inlineoverride

Parameters

editor	Editor widget.
option	Style option containing the target rectangle.
index	Model index (unused).

Definition at line 381 of file dbselectView.h.

---

The documentation for this class was generated from the following file:

• dbselectView.h